JP3215430B2 - Disposable pull-on absorbent article with multi-directional stretch side panels - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to absorbent articles such as infant training pants, hanging diapers, incontinence briefs, diaper covers, etc., and more particularly to a wearer with a dynamic fit. And an absorbent article having extensible side panels that provide improved comfort characteristics.

BACKGROUND OF THE INVENTION Infants and other incontinents wear absorbent articles, such as diapers, to receive and contain urine and other body exudates. Absorbent articles serve both the function of containing the emitted substances and separating these substances from the wearer's body and from the wearer's underwear and bedding. Disposable absorbent articles having a number of different basic designs are known in the art. For example,
United States Reissue Patent No. 26,152, issued to Duncan and Baker on January 31, 1967, describes a disposable diaper that has achieved wide acceptance and commercial success.

To provide a better fit and reduce leakage, absorbent articles are provided with an elastic feature. 1
U.S. Pat. No. 3,860,003 issued to Kenneth B. Buell on Jan. 14, 975, entitled "Shrinkable Side Pieces for Disposable Diapers", has a wide receiving and commercial success, and is telescopic Disposable diapers with leg cuffs are described. U.S. Pat. No. 5,151,092, issued Sep. 29, 1992 to Buell et al., Describes an absorbent article having an elastic waist shape that improves dynamic fit and containment properties. Wo dated August 15, 1989
U.S. Pat. No. 4,857,067 issued to Od et al. describes a disposable diaper having elastic side panels for fitting over the buttocks of a wearer. This elastic shape is
It is designed to expand and contract with the movement of the wearer and to maintain the wearability of the absorbent article during use (i.e., to provide a sustained dynamic wear feeling).

However, it has been found that absorbent articles having an elastic shape still have a tendency to leave gaps or become too tight during use. As the wearer moves, especially in the buttocks and thighs, changes occur in the wearer's body measurements, thereby subjecting the diaper to dynamic forces. These dynamic forces tend to deform the material from which the diaper is made, and tend to push the diaper away from the body. As a result, diapers have a tendency to hang down or separate from the wearer, particularly in areas of dynamic movement such as the buttocks and thighs. Conventional disposable diapers were originally manufactured from an inelastic material that could not elastically expand to accommodate the movements of the wearer's body. By introducing the integral elastic side panel shape into conventional disposable diapers, the side panel is generally expanded laterally around the waist of the wearer, improving its comfort and comfort. However, an integral elastic side panel cannot be completely elastically expanded in a direction other than the lateral direction without undue pressure on the wearer's legs, buttocks or hips.
Conventional disposable diapers with integral elastic side panel shapes still tend to create gaps away from the body, as the movement of the wearer creates dynamic forces in a number of different directions, potentially increasing leakage. Causes a bad feeling of wearing, and applies a force to make a red mark on the skin of the wearer.

Accordingly, it would be advantageous to provide an absorbent article with improved extensible side panels that provides better fit and wearer comfort and reduced leakage, sag and gap formation during use.

Therefore, it is an object of the present invention to provide an absorbent article having an improved dynamic fit around the waist and legs of the wearer by reducing sagging and gap formation of the absorbent article to the wearer. That is.

Another object of the invention is to expand and contract in multiple directions,
Unique to increase the freedom of movement and the comfort of the wearer while minimizing the effect of the dynamic forces created by the wearer's movement, thereby improving the sustained dynamic fit of the absorbent article It is to provide an absorbent article having a multidirectional extensible side panel.

These and other objects of the present invention will become more readily apparent when considered in conjunction with the following description and taken in conjunction with the accompanying drawings.

SUMMARY OF THE INVENTION The present invention is directed to infant training trousers, suspension diapers, incontinence briefs, diaper covers, and women's sanitary garments having extensible side panel formations to improve the dynamic fit of the diaper around the wearer's legs and waist. Provide an absorbent article such as. Such an absorbent article includes a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent core disposed between the topsheet and the backsheet, and an extensible side panel each having a first waist region. A waist panel disposed along each longitudinal edge of the containment assembly and a containment assembly with a thigh panel. The waist panel and the thigh panel are preferably operatively associated such that the waist panel has a main direction of extensibility in one direction and the thigh panel has a main direction of extensibility in a different direction. . Thereby, the waist panel maintains tension around the waist and provides tension to the wearer to hold the diaper around the waist, and the thigh panel provides a dynamic fit around the wearer's legs. A multi-directional extensible side panel is formed that expands and contracts to maintain. Therefore,
The waist and thigh panels reduce the negative effects of dynamic forces on the absorbent article, such as sagging and gap formation, which can cause leakage, while improving freedom of movement and comfort for the wearer.

The extensible side panel comprises a single piece of extensible material or two or more separate elements joined together to form an extensible side panel. Further, the extensible side panel may be an extension of another element of the absorbent article or another structure joined to another element of the absorbent article. Mechanical operations such as pleating, corrugating, ring-rolling, etc. can be performed on the side panels to provide the unique multi-directional extensibility characteristics of the present invention. Also, the material may be folded, slit or cut to form separate waist and thigh panels having different directions of extensibility.

In yet another aspect, the multi-directional extension feature is derived from a separate waist panel member having a non-parallel extensible main direction and an extensible side panel with a thigh panel member. In a preferred embodiment, the waist panel has a main direction of extensibility around the waist of the wearer and the thigh panel is not parallel to the main direction of the waist panel, preferably at an angle to the transverse and longitudinal directions. With an extensible main direction. In this configuration, the waist panel elastically contracts to provide an inwardly directed force that holds the absorbent article in place around the wearer during use, while the thigh panel is Expands and contracts with the movement of the person's leg. Thus, the multi-directional extensible side panels reduce the likelihood of gaps forming in the waist and thigh regions of the absorbent article, and can also leave marks on the wearer's skin resulting from tension and dynamic forces. Lower.

BRIEF DESCRIPTION OF THE DRAWINGS This specification particularly points out the subject matter regarded as constituting the present invention and being construed in the claims that follow, which will be interpreted in light of the following description taken in conjunction with the accompanying drawings. It is believed that it will be better understood. In the drawings, the same designations are used to designate substantially identical elements.

FIG. 1 is a plan view of a disposable diaper embodiment of the present invention having a portion cut away to reveal an inner surface, the structure underlying the diaper, facing the viewer.

FIG. 2 is an enlarged fragmentary view of one mode of the inner surface of the extensible side panel of the diaper shown in FIG. 1 with portions cut away to reveal underlying structures.

FIG. 3 is an enlarged fragmentary view of one type of outer surface of the extensible side panel of the diaper shown in FIG. 1, with portions cut away to reveal underlying structures.

FIG. 4 is an enlarged fragmentary plan view of the inner surface of the diaper extensible side panel shown in FIG. 1, showing the main direction of extensibility of the waist panel and the main direction of extensibility of the thigh panel with respect to the horizontal axis. The tape tabs and stiffeners shown in FIG. 1 have been removed for clarity.

FIG. 5 is a plan view of a multi-component extensible side panel shape where the distal edges of the waist panel and thigh panel are not joined.

FIG. 6 is a plan view of a preferred embodiment of a polymeric web material having a deformable network with deformation, towards the viewer.

FIG. 7 is a sectioned perspective view of the polymer web material of FIG. 6 in an untensioned state.

FIG. 8 is a sectioned perspective view of the polymeric web material of FIG. 6 in tension, corresponding to stage I of the force-elongation curve shown in FIG.

FIG. 9 is a sectioned perspective view of the polymer web material of FIG. 6 in tension, corresponding to stage II of the force-elongation curve shown in FIG.

FIG. 10 is a graph of resistance versus percent elongation comparing the behavior of the inventive polymeric web material as shown in FIG. 6 to an otherwise identical planar base polymeric web material.

FIG. 11 is an enlarged fragmentary plan view of another embodiment of the present invention, wherein the extensible side panels comprise a single component.

FIG. 12 is a plan view of another aspect of the present invention in which a single extensible component has been folded to form an extensible side panel and a waist shape and leg cuff of a disposable diaper article.

FIG. 13 is a perspective view of a disposable infant training pant equipped with the multidirectional extensible side panels of the present invention.

DETAILED DESCRIPTION OF THE INVENTION As used herein, the term "absorbent article" refers to a device that absorbs and contains bodily exudates, and more particularly, is positioned relative to or near the body of the wearer. And refers to devices that absorb and contain various exudates excreted from the body. The term "disposable" is used herein to
Absorbent articles not intended to be washed or otherwise recovered or reused as absorbent articles (ie,
It is discarded after a single use and is preferably recycled in an environmentally compatible manner and is intended to be composted or otherwise disposed of). Preferred embodiments of the absorbent article of the present invention are a diaper 20 which is a disposable absorbent article shown in FIG. 1 and a disposable pull-on absorbent article shown in FIG. As used herein, the term "diaper" refers to an absorbent article generally worn by infants and incontinent persons, worn around the lower torso of the wearer. However, it is understood that the present invention is also applicable to other absorbent articles such as incontinence briefs, incontinence underwear, diaper holders and liners, feminine hygiene underwear, infant training pants, hanging diapers and the like. Should.

FIG. 1 has portions of the structure separated to more clearly show the configuration of the diaper 20, with the portion of the diaper 20 facing or in contact with the wearer, i.e., the inside surface facing the viewer. FIG. 2 is a plan view of the diaper 20 of the present invention in its flattened, uncontracted state (ie, having an elastic induced contraction pulled out). As shown in FIG. 1, the diaper 20 preferably comprises a liquid permeable topsheet 24, a liquid impermeable backsheet 26 joined to the topsheet 24, and a topsheet 24.
And a containment assembly 22 having an absorbent core 28 disposed between the backsheet 26 and the backsheet 26. The diaper further has elasticized leg cuffs 32, ear flaps 62, elastic waist shape 34,
A pair of first fastening members 40 each having a main center line F
And a fastening system 48 with a second fastening member 42,
And an extensible side panel 30 with an extensible waist panel 36 and a thigh panel 38, respectively. Each extensible side panel 30 has a base edge 80 and a distal edge 82.

The diaper 20 also has two centerlines, a longitudinal centerline 10.
It has a zero and a lateral centerline 102. The term "vertical"
A diaper, as used herein, is generally aligned (eg, substantially parallel) with a vertical surface that bisects a standing wearer into a left half and a right half when wearing the diaper 20. Refers to a line, axis or direction in 20 planes. The terms “transverse” and “transverse”, as used herein, are interchangeable and generally perpendicular to the longitudinal direction (dividing the wearer into a front body and a back body). Refers to a line, axis or direction that lies in the plane of the diaper.

As shown in FIG. 1, the extensible side panel 30 is preferably a lumbar operatively associated under contraction conditions such that the waist panel 36 and the thigh panel 38 have non-parallel extensible main directions. A panel 36 and a thigh panel 38 are provided.
(The terms “lumbar panel” and “thigh panel” refer to the extensible components of an extensible side panel each having an extensible principal direction. As used herein, “extensible principal direction” The direction in which the extensible member has the greatest extensibility). FIG. 1 shows a preferred embodiment of the present invention in which the waist panel 36 has a major direction of extensibility around the waist of the wearer and the thigh panel 38 has a major direction of extensibility that is not parallel to that of the waist panel 36. Is shown. (The main direction of extensibility at the waist panel 36 is represented by arrow G in FIG. 1. The main direction of extensibility at the thigh panel 38 is represented by arrow H in FIG. 1).
In a particularly preferred embodiment, the thigh panel 38 has a major extensible direction that is not parallel to the transverse or longitudinal direction.
(The lateral direction is defined as the direction parallel to the horizontal center line of the diaper, and the vertical direction is defined as the direction parallel to the vertical center line of the diaper). Extensible side panel 30
As the extensible side panels 30 expand and contract the sides of the diaper 20, the diaper 20 is first adapted to conform to the wearer, and worn sufficiently since the diaper 20 contained exudate. By maintaining the wearing feeling throughout the period of time, a more comfortable and suitable wearing feeling is provided. The waist panel 36 elastically contracts to provide an inward force to hold the diaper in place around the waist during use. Thigh panel
38 expands and contracts with the movement of the wearer's leg. Thus, the multi-directional elastic waist panel and thigh panel reduce the likelihood of gaps forming in the waist or thigh area of the diaper, and can leave marks on the wearer's skin resulting from tightening tension and dynamic forces. Lower.

The diaper 20 includes an inner surface 44 (as viewed in FIG. 1), an outer surface 46 opposite the inner surface 44, a first waist region 50, and a first waist region 50 in FIG. The second waist region 52 on the opposite side, the crotch region 54 located between the first waist region 50 and the second waist region 52 and the outer periphery or edge of the diaper 20 (however, the vertical edge is 56 Designated, and the distal edge is designated 58). The inner surface 44 of the diaper 20 includes a portion of the diaper 20 that is disposed adjacent a wearer's body during use (ie, the inner surface 44 generally comprises at least a portion of the topsheet 24). And other components joined to the topsheet 24). The outer surface 46 includes a portion of the diaper 20 that is positioned away from the wearer's body (ie, the outer surface 46 is generally joined to at least a portion of the backsheet 26 and the backsheet 26). Formed by other components). As used herein, the term "joined" refers to a shape that directly secures an element to another element by directly affixing the element to another element, and to subsequently affix the element to another element. Includes shapes that indirectly secure elements to other elements by affixing to the intermediate member (s). The first waist region 50 and the second waist region 52 extend from a peripheral edge 58 of the crotch region 54. The first waist region 50 includes a central region 60 and a pair of extensible side panels 30 that typically include outer lateral portions of the first waist region 50. The second waist region 52 has a central region 172,
And a pair of ear flaps 62, typically comprising outer lateral portions of the second waist region 52. The extensible side panels located in the first waist region 50 are designated 30 while the ear flaps in the second waist region 52 are designated 62.

The containment assembly 22 of the diaper 20 is illustrated in FIG.
It is shown as having a main body (chassis) of the diaper 20. The containment assembly 22 comprises an outer cover layer comprising at least an absorbent core 28 and preferably a topsheet 24 and a backsheet 26. When the absorbent article comprises another holder and liner, the containment assembly 22 generally comprises a holder and liner (ie, the containment assembly 22 comprises one or more of the materials defining the holder). , While the liner comprises an absorbent composite such as a topsheet, a backsheet and an absorbent core). Typically,
The confinement assembly 22 includes a main structure of the diaper having other shapes added to form a composite diaper structure. Accordingly, the containment assembly 22 for the diaper 20 includes a topsheet 24, a backsheet 26, and an absorbent core 28.

FIG. 1 shows a preferred embodiment of a containment assembly 22 in which the topsheet 24 and the backsheet 26 have length and width dimensions that are generally larger than those of the absorbent core 28. Topsheet 24 and backsheet 26 are absorbent cores
It extends beyond the edges of 28, thereby forming the periphery of the diaper 20. Top sheet 24, back sheet 26
Although the absorbent core 28 can be assembled in a variety of known shapes, a preferred containment assembly shape is U.S. Pat. "Shrinkable side parts for disposable diapers" and Ke as of September 29, 1992
U.S. Patent No. 5,151,092 issued to nneth B. Buell et al.
It is generally described in the title of the invention, "Absorptive Articles with Dynamic Elastic Waist Shape with Pre-Provided Elastic Flexible Hinge", each of which is incorporated herein by reference.

FIGS. 2 and 3 are enlarged fragmentary views of the extensible side panel 30 having portions cut away to reveal underlying structures. FIG. 2 shows the inside surface of the extensible side panel 30 and FIG. 3 shows the outside surface of the extensible side panel. In the multi-component embodiment shown in FIGS. 2 and 3, the extensible side panel 30 has a waist panel base edge 72, a waist panel end edge 74, a waist panel first side edge 90, and a waist panel second side edge 92. A waist panel 36 and a thigh panel 38 having a thigh panel base edge 78, a thigh panel end edge 76, a thigh panel first lateral edge 94 and a thigh panel second lateral edge 96 are provided. As shown in FIG. 2, the waist panel base edge 72 and the thigh panel base edge 78 may be joined between the topsheet 24 and the backsheet 26. In addition, either or both of the waist panel base edge 72 and the thigh panel base edge 78 are provided on the outer surface of the backsheet 26.
46, bonded to the inner surface 44 of the topsheet 24. FIG. 2 further shows the lumbar panel 36 and the thigh panel 38 operatively associated in a partially overlapping configuration with the lumbar panel distal edge 74 joined to the thigh panel distal edge 76.

As shown in FIG. 2, the first fastening member 40 is preferably located adjacent the distal edge 82 of the extensible side panel 30. First tightening member 40 is preferably operatively associated such that it is joined to both waist panel 36 and thigh panel 38. Thus, the force on the first fastening member 40 applies tension to both the waist panel 36 and the thigh panel 38 as a whole. FIG. 2 also shows the base edge of the extensible side panel 30.
A base stiffener 84 disposed adjacent to 80 and a distal stiffener disposed adjacent to a distal edge 82 of the elongated side panel 30.
86 is shown. The base stiffener 84 prevents the base edge 80 of each elongate side panel 30 from buckling during use, and the distal stiffener 86 applies a force to the clamping system 48 throughout each extensible side panel 30. Help distribute. As shown in FIG. 2, the base stiffener 84 and the distal stiffener 86 are separate elements joined to the absorbent article by attachment means (not shown) such as those known in the art. Or may be integral with the elements of the absorbent article.

The absorbent core 28 is generally compressible, conformable, non-irritating to the wearer's skin, and absorbs and retains liquids such as urine and some other body exudates. Any absorbent member that can be used. As shown in FIG. 1, the absorbent core 28 has an outer surface 64, an inner surface 66, side edges 68, and a waist edge 70. The absorbent core 28 can be of a wide variety of sizes and shapes (eg, rectangular, hourglass, "T" shaped, asymmetric, etc.) and a wide variety of liquid absorbent materials commonly used in disposable diapers, and generally It can be made from other absorbent articles such as pulverized wood pulp called airfelt. Examples of other suitable absorbent materials include crepe cellulose wadding, meltblown polymers including coforms, chemically stiffened, modified or crosslinked cellulosic fibers, tissue wraps and tissue laminates Tissue, absorbent foam, absorbent sponge, superabsorbent polymer, absorbent gelling substance or any equivalent material or combination of materials.

The shape and configuration of the absorbent core 28 can vary (e.g., the absorbent core has a varying caliper zone, hydrophilic gradient, superabsorbent gradient or low average density and low average basis weight gain zone). Or one or more layers or structures). However, the total absorption capacity of the absorbent core 28 must be compatible with the design content of the diaper 20 and the intended use. Further, the size and absorbent capacity of the absorbent core 28 may be varied to accommodate wearers ranging from infants to adults.

One embodiment of the diaper 20 has ears in the first waist region, but has a generally rectangular shape in the second waist region,
It has an asymmetric, modified T-shaped absorbent core 28. Absorbent cores of the present invention with broad acceptance and commercial success
A typical absorbent structure for use as 28 is 1986
U.S. Pat. No. 4,6, issued to Weisman et al.
No. 4,678, issued to Weisman et al. On June 16, 1987, entitled "High Density Absorbing Structure".
No. 3,402, the title of the invention `` Absorbent article with a double-layer core ''; U.S. Pat.No. 4,888,231 issued to Angstadt on Dec. 19, 1989; No. 4,834,735, issued to Alemany et al. On May 30, 1998, entitled "High Density Absorbing Member with Low Density and Low Basis Weight Gain Zone". Absorbent cores are also available from Alem on August 10, 1993.
U.S. Patent No. 5,234,423 issued to any et al., entitled "Absorptive Articles with Elastic Waist Shape and Enhanced Absorbency" and Young, LaVon and Taylor on September 15, 1992.
U.S. Patent No.
A dual core system containing a chemically stiffened fiber acquisition / distribution core positioned above the absorbent storage core may be provided. All of these patents are incorporated herein by reference.

The backsheet 26 is disposed adjacent the outer surface 64 of the absorbent core 28 and is preferably joined thereto by attachment means (not shown) such as those known in the art. For example, the backsheet 26 may be formed by a uniform continuous layer of adhesive, a patterned layer of adhesive or an array of discrete lines, spirals or spots of adhesive.
Can be fixed. Adhesives that have been found satisfactory are listed in HB Fuller Company of St. Paul, Minn.
esota) and marketed as HL-1258. An example of a suitable attachment means having an open pattern network of adhesive filaments is U.S. Pat. No. 4,573,986, issued Mar. 4, 1986 to Minetola et al. ". Another suitable means of attachment, comprising several adhesive filaments spiraled into a helical pattern, is described in 1975.
US Patent No. 3,9 issued to Sprague, Jr. on October 7
U.S. Pat.No. 4,785,996 issued to Ziecker et al. On November 22, 1978 and Wer issued on June 27, 1989.
This is shown by the apparatus and method shown in U.S. Pat. No. 4,842,666 issued to enicz. Each of these patents is incorporated herein by reference. The attachment means may also include a thermal connection, a pressure connection, an ultrasonic connection, a dynamic mechanical connection, or any other suitable attachment means or combination of these attachment means as known in the art. May be.

The backsheet 26 is impervious to liquids (eg, urine) and is preferably made from a thin plastic film, although other flexible liquid impervious materials can be used. As used herein, the term "flexible"
Refers to a material that is compliant and easily conforms to the general shape and contour of the human body. The backsheet 26 includes an absorbent core 28
Prevents exudates absorbed and contained in the diaper 20 from wetting articles in contact with the diaper 20, such as bed sheets and underwear. Further, the backsheet 26 allows vapor to escape from the absorbent core 28 (i.e., is breathable) while still preventing exudates from penetrating the backsheet 26. Accordingly, the backsheet 26 may comprise a woven or non-woven material, a polymer film such as a polyethylene or polypropylene thermoplastic film, or a composite material such as a film-coated non-woven material. Examples of suitable backsheets are from about 0.012 mm (0.5 mil) to about 0.051 mm
(2.0 mils) thermoplastic film.
Other suitable materials for the backsheet 26 include Tresigger,
Industries Inc. of Terre Haute Indiana (Tredegar Industries, Inc.of
RR8220 blown film and RR5475 cast film as manufactured by Terre Haute, IN). The backsheet 26 is preferably embossed and / or matted to provide a more cloth-like appearance.

The topsheet 24 is disposed adjacent the inner surface 66 of the absorbent core 28 and is preferably joined thereto and to the backsheet 26 by attachment means (not shown) such as those known in the art. ing. Suitable attachment means are described for joining the backsheet 26 to the absorbent core 28. In a preferred embodiment of the present invention, the topsheet 24 and the backsheet 26 are directly joined to each other at the diaper peripheral portion 55, or an attachment means (not shown).
By joining them directly to the absorbent core 28, they are joined together indirectly.

The topsheet 24 is compliant, soft feeling and non-irritating to the wearer's skin. Further, the topsheet 24 is preferably liquid permeable so that liquids (eg, urine) can easily penetrate through its thickness. Suitable topsheets 24 include porous foam, reticulated foam, perforated plastic film or natural fibers (eg, wood or cotton fibers), synthetic fibers (eg, polyester or polypropylene fibers), or a mixture of natural and synthetic fibers. It can be made from a wide range of materials, such as combinatorial woven or nonwoven webs. Preferably, the topsheet 24 penetrates the topsheet 24 and separates the wearer's skin from the liquid contained in the absorbent core 28 (ie,
Made from a hydrophobic material (to prevent rewetting). If the topsheet 24 is made from a hydrophobic material, at least the upper surface of the topsheet 24 is treated to be hydrophilic so that liquid moves more quickly through the topsheet. This allows body exudate to flow into the topsheet
The likelihood of being drawn through 24 and flowing away from topsheet 24 rather than being absorbed by absorbent core 28 is reduced. The topsheet 24 can be made hydrophilic by treating it with a surfactant. Suitable methods of treating the topsheet 24 with a surfactant include spraying the topsheet 24 material with a surfactant and dipping the material in the surfactant. A more detailed description of such treatments and hydrophilicity can be found in Jan. 29, 1991.
U.S. Patent No. 4,988,344 issued to Reising et al.
No., Title of Invention "Absorbent Article Having Multi-layer Absorbent Layer" and U.S. Pat. No. 4,988,345 issued to Reising on Jan. 29, 1991 (Each of these patents is incorporated herein by reference).

There are a number of manufacturing methods that can be used to manufacture the topsheet 24. For example, the topsheet 24 may be a nonwoven web of fibers. When the topsheet 24 comprises a nonwoven web, the web can be spunbonded, carded, wetted, meltblown, hydroentangled, combinations thereof, and the like. A suitable topsheet 24 is carded out,
Thermally bonded by means known to those skilled in the textile arts. A satisfactory topsheet 24 is comprised of staple length polypropylene fibers having a denier of about 2.2. As used herein, the term "staple length fibers" refers to those fibers having a length of at least about 0.625 inches (15.9 mm). Preferably,
Topsheet 24 has a basis weight of about 18 to about 25 grams per square meter. A suitable topsheet is the International Paper Company of Walpole, Mass.
pole, Mass), manufactured by Veratec, Inc. under the name P-8.

The diaper 20 preferably further includes elasticized leg cuffs 32 to provide improved containment of liquids and other body exudates. Each elasticized leg cuff 32 may include a number of different aspects to reduce the leakage of body exudate in the leg region. (Leg cuffs may be leg bands, side flaps, barrier cuffs or elastic cuffs and are sometimes referred to as such). U.S. Pat. No. 3,860,003 describes a disposable diaper having a side flap and a shrinkable leg opening having one or more elastic members to provide an elasticized leg cuff (gasketized cuff). . 1990 3
U.S. Patent No. 4,909,803 issued to Aziz et al.
The article entitled "Disposable Absorbent Article with Elasticized Flap" describes a disposable diaper with a "rise" elasticized flap (barrier cuff) to improve the containment of the leg area. U.S. Pat. Is described. Each elasticized leg cuff
32 can be formed similarly to any of the leg bands, side flaps, barrier cuffs or elastic cuffs described above, but each elasticized leg cuff 32 is preferably a U.S. Pat.No. 3,860,003 referenced above. Gasket cuffs as described in US Pat.

The diaper 20 preferably further includes an elastic waist shape 34 that helps provide improved fit and containment. The elastic waist shape 34 is a diaper that is intended to elastically expand and contract to dynamically fit the wearer's waist.
20 parts or bands. The elastic waist shape 34 is preferably
Extending longitudinally outward from at least one of the waist edges 70 of the absorbent core 28 and generally forming at least a portion of the distal edge 58 of the diaper 20. Although disposable diapers are generally configured to have two elastic waist shapes, one disposed within the first waist region 50 and one disposed within the second waist region 52. The diaper can be configured with a single elastic waist shape. Further, although the elastic waist shape 34 or all of its components may comprise a separate element affixed to the diaper 20, the elastic waist shape 34 may comprise a backsheet 26 or topsheet 24, preferably a backsheet 26.
, And as an extension of other elements of the diaper, such as both the topsheet 24. Waist shape 34, 19
U.S. Patent No. 4, issued to kievit et al. On May 7, 1985.
It can be configured in a number of different shapes, including those disclosed in US Pat. No. 5,151,092 to 515,595 and Buell referenced above, each of which is incorporated herein by reference. .

In a preferred embodiment of the present invention, diaper 20 may also include ear flaps 62 extending laterally outward from each longitudinal edge 56 of containment assembly 22 in second waist region 52. . The ear flaps 62 provide a structure that allows the first waist region 50 to be mounted over the wearer's legs and waist. Ear flaps 62 can take many different sizes, shapes, configurations and materials. Ear flap 62
May form part of the material from which one or more diaper elements, including the topsheet 24 and the backsheet 26, are made. In addition, the ear flap 62 may constitute a separate element or a plurality of elements attached to the diaper. Suitable materials for use as the ear flaps 62 include woven webs, nonwoven webs, films including polymer films, foams, film laminates, laminate materials including nonwoven or zero strain laminates, elastomers, Included are composites or combinations of all materials as described herein for the extensible side panels as described herein or as known in the art. The ear flap 62 may be joined to the containment assembly 22 by all means known in the art, for example, the ear flap 62 may be heated or unheated adhesive, heat bonded, pressure bonded, ultrasonic bonded, dynamic The confinement assembly can be continuously or intermittently coupled to the confinement assembly using mechanical coupling or any other method known in the art.

The diaper 20 may further comprise an extensible side panel 30 disposed adjacent to each longitudinal edge 56 of the confinement assembly 22 of the diaper 20, preferably within the first waist region 50.
(As used herein, the term "arranged" refers to the element (s) of the absorbent article being integrally formed with or joined to other elements of the absorbent article. As a separate element (meaning that it is formed (joined and arranged) in a special place or location). Extensible side panel 30
Since the extensible side panels 30 expand and contract the sides of the diaper 20, the diaper 20 is first adapted to conform to the wearer, and is worn well enough since the diaper 20 contained exudate. Maintaining the fit over time provides an elastically extensible shape that provides a more comfortable and tailored fit. The extensible side panel 30 further
Even when the diaper applies the diaper to the wearer asymmetrically, the diaper "self-regulates" during wear to achieve an improved fit, thus providing a more effective application of the diaper. . The stretchable panel 30 of the present invention also
Provides improved dynamic fit around the wearer's hips and thighs, while increasing freedom of movement and wearer comfort in each area, while allowing for leaks at the hips and around the legs. It reduces the possibility of both sagging and gap formation.

Each extensible side panel 30 includes a waist panel 36 and a thigh panel 38. The waist panel 36 preferably has a different primary direction of extensibility than the thigh panel 38 as long as the extensible side panels 30 have unique multidirectional extension characteristics. The waist panel 36 initially provides tension to secure the diaper 20 around the wearer's waist and, when "activated", provides a tight, yet comfortable fit for the diaper 20 over the period of use. A portion or element of the extensible side panel 30 that is designed to expand and contract dynamically with the movement of the wearer for maintenance. (As used herein, the term "activate" or "activated" means that the extensible material is no longer under relaxed conditions, and thus may expand and contract with the movement of the wearer. Applying tension to the extensible material under such relaxed conditions). Waist panel 36
A waist panel base edge 72, a waist panel end edge 74 laterally opposed to the waist panel base edge 72, a waist panel base edge 72;
A first lateral edge 90 extending between the first lateral edge 90 and a second lateral edge 92 longitudinally opposed to the first lateral edge 90. In a preferred embodiment, the waist panel 36 has a first lateral edge 90 located farther than a second lateral edge 92 from a transverse centerline 102 of the containment assembly 22 and forms part of the distal edge 58 of the diaper 20. Are arranged as follows.

The waist panel 36 is preferably positioned around the wearer's waist (arrow G).
(E.g., represented by). In a preferred embodiment, the primary direction of extensibility of the waist panel 36 is a first vector component oriented outwardly in a lateral direction greater than zero and greater than or equal to zero and of the transverse central axis 102. And a second vector component that is oriented in the same direction. More preferably, the first vector component in the main direction of extensibility of the waist panel is greater than the second vector component. (However, the waist panel 36
It should be noted that all or a portion of may also be extensible in directions other than the main direction of extensibility).
Angle A in FIG. 4 is the angle (measured clockwise or counterclockwise) between the major direction of extensibility of waist panel 36 and a horizontal axis 104 that is parallel to lateral centerline 102. Express.
(In FIG. 4, angle A is measured in a clockwise direction from horizontal axis 104). Angle A is preferably about 0 from the lateral direction.
~ 45 degrees, more preferably about 5-20 degrees from the lateral direction, and most preferably about 10-15 degrees from the lateral direction.

Thigh panel 38 is a portion or element of extensible side panel 30 that is designed to expand and contract with the wearer's dynamic movement in the outer thigh region where the diaper covers the wearer's leg. The thigh panel 38 includes a thigh panel base edge 78, a thigh panel end edge 76 laterally opposed to the thigh panel base edge 78, a thigh panel base edge 78 and a thigh panel end edge.
The first horizontal edge 94 extends between the first horizontal edge 94 and the second horizontal edge 96 in the vertical direction. Preferably, the thigh panel 38 is a longitudinal edge of the containment assembly 22.
Located adjacent to 56 and extending laterally outward from a location closer to the lateral centerline 102 of the containment assembly 22 than the waist panel 36. Preferably, the second lateral edge 96 of the thigh panel 38 is located further from the distal edge 58 of the containment assembly 22 than the first lateral edge 94. In a preferred embodiment, when the diaper 20 is adapted to the wearer, the second lateral edge 96
Forms part of the diaper 20 covering the wearer's thighs.

The thigh panel 38 preferably has an extensible main direction (represented by an arrow H) that is not parallel to the waist panel's main extensible direction, and is preferably angled with respect to the transverse and longitudinal directions. It is composed of a conductive material. In one preferred embodiment, the major direction of extensibility of the thigh panel is a first vector component oriented outwardly in a lateral direction greater than zero and greater than or equal to zero and having a lateral central axis 102. And a second vector component oriented away from. (Whole or part of the thigh panel,
It may be extensible in directions other than the main direction of extensibility).
As shown in FIG. 4, angle B represents the angle between the main direction of extensibility of the thigh panel and the transverse axis 104. (As used herein, angle B is measured counterclockwise from horizontal axis 104). Angle B is preferably between about 0 and
40 degrees, more preferably about 10 to 35 degrees from the lateral direction, and most preferably about 20 to about 30 degrees from the lateral direction. In a preferred embodiment, when diaper 20 is first fitted to the wearer, thigh panel 38 covers the outer thigh portion of the wearer's leg. When "activated", the thigh panel 38 dynamically expands and contracts with the movement of the wearer's leg to maintain a snug fit around the wearer's leg throughout the period of use. This improves the diaper's containment properties while reducing the likelihood of making red marks on the wearer's skin.

The waist panel 36 and the thigh panel 38, and the extensible side panels 30, can take many different sizes, shapes, configurations and materials. The exact length, width and thickness of the extensible side panels 30 and waist panels 36 and thigh panels 38 are
It will vary depending on the intended size of the user and the exact placement of the extensible side panels 30. Therefore, the waist panel
36 may be identical in size and shape to the thigh panel 38, or the waist panel 36 may be operatively associated with the thigh panel 38 of the diaper 20 and the confinement assembly 22 to form a book as described herein. It may have different dimensions, as long as it provides the multidirectional extension characteristics of the invention. An example of a suitable extensible side panel 30 worn by a medium sized infant is a trapezoid having dimensions generally about 2 to 4 inches in length and about 2 to 5 inches in width.

The extensible side panels 30 may be comprised of a single piece of extensible material or two or more extensible members operatively associated together to form each extensible side panel 30. As used herein, the term "single component extensible side panel" or "single component embodiment"
Refers to an embodiment of the present invention in which the extensible side panels are comprised of a single extensible member. The term "multi-component extensible side panel" or "multi-component embodiment" refers to two or more extensible side panels 30 operatively associated together to form an extensible side panel 30. Used herein to depict aspects of the present invention that are comprised of a flexible member. In a preferred embodiment, the extensible side panels 30 comprise two or more, preferably two, extensible members, namely a waist panel member 37 forming a waist panel 36 and a separate thigh panel member 39 forming a thigh panel 38. It has. The extensible members may be configured as extensions of other elements of the diaper, such as the backsheet 26 or the topsheet 24 or both, or they may comprise a generally separate element affixed to the containment assembly 22. May be provided.

The base edge 80 of the extensible side panel 30 is positioned adjacent one longitudinal edge 56 of the diaper confinement assembly 22. In one arrangement, the base edge 80 of the extensible side panel 30 is located between the topsheet 24 and the backsheet 26. However, the extensible side panels 30
The confinement assembly 22 can be joined in a number of different arrangements. For example, the base edge of the extensible side panel 30
80 can be bonded to the outer surface 46 of the backsheet 26 or the inner surface 44 of the topsheet 24. Also, the waist panel 36
And in a multi-component embodiment in which the thigh panel 38 is comprised of separate extensible members, the waist panel member 37 and the thigh panel member 39 may be attached to the same or different surfaces or the topsheet 24 and the backsheet 26. Can be placed in between. In still other embodiments, the extensible side panel 30 or any of its components can be located on a separate element that is joined to the containment assembly 22.

The extensible side panel 30 is preferably joined to the confinement assembly 22 or the diaper 20 by attachment means (not shown) such as those known in the art. A suitable means for attaching each extensible side panel 30 to the containment assembly 22 is a melt bond (eg, ultrasonic, heat or pressure bond). Also, the extensible side panels 30 may be intermittently or continuously bonded to the confinement assembly 22 using adhesives, dynamic mechanical bonding, or any other method known in the art. it can.

In a preferred embodiment of the present invention, as shown in FIGS. 1, 2 and 3, at least a portion of the waist panel 36 and the thigh panel 38 are joined together. Preferably, at least a portion of the waist panel distal edge 74 is joined to at least a portion of the thigh panel distal edge 76. In a multi-component embodiment, the waist panel distal edge 74 and the thigh panel distal edge 76 are preferably joined in an at least partially overlapping configuration. This allows the distal edge 82 of the extensible side panel 30
, So that the waist panel 36 and the thigh panel 38 can expand and contract with the movement of the wearer, as the force applied to the first tightening member 40 located adjacent to the Activation "is ensured. Waist panel 36
And the thigh panels 38 can be joined together using adhesive, thermal bonding, pressure bonding, ultrasonic bonding, dynamic bonding, or any other bonding method known in the art.

Also, as shown in FIG. 5, a multi-component extensible side panel 30 is possible where the waist panel member 37 and thigh panel member 39 are not initially joined together. The waist panel distal edge 74 is remote from the thigh panel distal edge 76 and each extensible member has a separate clamping component joined thereto. This gives the diaper wearer greater flexibility when tightening the diaper 20 around the waist, with the arrangement of the distal edges of the extensible members forming the waist panel member 37 and the thigh panel member 39. For example, in this configuration, the waist panel member 37 and the thigh panel member 39 can be individually fastened to the diaper 20 itself. Also, the waist panel member 37 can be retightened to the thigh panel member 39 or the thigh panel member 37 can be
Can be re-tightened to 39. The waist panel member 37 and the thigh panel member 39 may be formed using the fastening components described above with respect to the waist panel member and the thigh panel member or all other fastening members joined to the waist panel member and the thigh panel member, such as hook-and-loop fasteners. And can be retightened to one another in a number of places.

Each extensible side panel 30 may be constructed from any suitable extensible, extensible or elastic material.
(As used herein, the term “extensible” refers to a material that can be increased in at least one dimension. The term “extensible” is extensible when a material is subjected to elongation, The term "elastic" refers to a material that provides some resistance to the
Refers to material that returns to approximately its original dimensions after releasing the force). One elastic material that has been found to be particularly suitable for use in the waist panel 36 and the thigh panel 38 is an elastic film sandwiched between two coverstock layers and a coverstock layer. It is a laminate. As used herein, "coverstock" may include any woven or non-woven material. An example of a suitable coverstock material is the International Paper Company of Walpole, Mass.
is a nonwoven material manufactured under the name P-8 by Veratec, Inc., a division of Ass. An example of a suitable film for sandwiching between coverstock layers is Exxon Chemical Company of Lake Zurich, Illinois.
n EXX-500, an elastic film manufactured by the Chemical Company of Lake Zurich, IL (formerly EXX-
7). Other suitable materials for use as or in the extensible side panels and side panel members include structurally elastic-like film (SELF) webs, synthetic or natural rubber, synthetic rubber, as described below. Or elastomeric composites such as natural rubber foams, elastomeric scrims, woven or nonwoven elastomeric webs, elastomeric nonwoven laminates, zero strain stretch laminates, prestrain stretch laminates, and the like. U.S. Patent No. 5,151,092, issued September 29, 1992 to Buell et al. Various zero strain stretch laminates and pre-strain stretch laminates are described and incorporated herein by reference. In other preferred embodiments, side panel 30 may be fully or partially breathable (ie, a film having slits, holes or gaps through which air can pass). The side panels may also be made of a breathable or microporous material such as Clopay P18-2321 film.

Structurally elastic-like film (SELF) webs are extensible materials that exhibit elastic behavior in the direction of elongation without the use of additional elastic material. The SELF web includes a strainable network having at least two adjacent, distinct, dissimilar regions. One of these regions is a resistive force that responds to an applied axial elongation in a direction parallel to a given axis, before a substantial portion of the other region produces significant resistance to the applied elongation. Are arranged as shown. At least one of these regions has a greater surface path length than that of the other regions when measured substantially parallel to a given axis when the material is in untensed state.
-Path length). Regions exhibiting longer surface path lengths include one or more variations that extend beyond the plane of the other region. When the SELF web is subjected to an elongation applied in a direction parallel to the given axis,
9 shows at least two significantly different stages of controlled resistance to elongation along at least one predetermined axis. The SELF web is such that a substantial portion of the region where the web stretch is sufficient and has a longer surface path length is in the plane of applied stretch where the SELF web exhibits a second resistance to further stretch. Until it enters, it shows the first resistance to the applied elongation. The total resistance to elongation is higher than the first resistance to elongation provided by the first region.

In a preferred embodiment, the strainable web material may be comprised of a shaped polymer film. The strainable web material can be made from a base material that has a relatively low elongation under the forces normally experienced when the diaper is worn. However, when formed into a strainable web material as described herein, the base material thus formed will be extensible under these forces. Strainable web materials are also made with special pre-selected stretch and force "force walls"
Can be formed into a structure giving the following. The strainable web material preferably contains substantially linear low density polyethylene (LLDPE). Strainable web materials may also include polyethylene or polypropylene, including low density polyethylene (LDPE), ultra low density polyethylene (ULDPE), high density polyethylene (HDPE) and other blends such as those above and other materials with these materials. May be contained. Examples of other suitable polymeric materials that can be used include polyester, polyurethane,
Includes, but is not limited to, compostable or biodegradable polymers, heat shrinkable polymers, thermoplastic elastomers and breathable polymer structures.

The strainable web material can be used in a variety of different forms in the extensible side panels 30 of the diaper 20. One example of a suitable shape for a structurally elastic-like film is a laminate. The laminate comprises an extensible web material secured between two longitudinally extensible, preferably carded, nonwoven webs. (Furthermore, this stretchable web material can be used in various other components of the absorbent articles described herein).

The strainable web material is shown in its substantially untensed state in FIGS. The strainable web material has two centerlines, a longitudinal centerline, hereinafter referred to as axis or direction "l", and a transverse or transverse centerline, hereinafter referred to as axis or direction "t". . The horizontal centerline "t" is generally perpendicular to the vertical centerline "l". In a preferred embodiment, the longitudinal centerline 1 of the strainable web material is
Is aligned with the vertical centerline 100 of However, in other embodiments, the longitudinal centerline l of the web material is
May be oriented in other directions, depending on the desired direction of extensibility.

As shown in FIGS. 6 and 7, the strainable web material 66
0 includes a “distortable network” of dissimilar regions that can be distinguished. As used herein, the term “strainable network” has a relatively low resistance stage and a relatively high resistance stage that stretch in a given direction to some useful degree and are elastic. Refers to interconnected and interconnected groups of regions that can provide strainable web material. The strainable network includes at least a first region 664 and a second region 666. First area
664 has an elastic modulus E1 and a cross-sectional area A1. Second area 666
Has an elastic modulus E2 and a cross-sectional area A2. The first region and the second region each have a first surface and an opposite second surface. In the preferred embodiment shown in FIGS. 6 and 7,
The deformable network includes a number of first regions 664 and a number of second regions 666. The first region 664 includes a first axis 668 and a second axis 669 (where the first axis 668 is preferably the second axis 66).
9 or more). The first axis 668 of the first region 664 is substantially parallel to the longitudinal axis 1 of the strainable web material 660, while the second axis 669 is relative to the transverse axis t of the strainable web material 660. Substantially parallel. The second region 666 has a first axis 670 and a second axis 671. The first axis 670 is substantially parallel to the longitudinal axis of the strainable web material, while the second axis 671 is substantially parallel to the transverse axis of the strainable web material. In the preferred embodiment of FIG. 6, the first region
The 664 and the second region 666 are substantially straight and extend continuously in a direction substantially parallel to the longitudinal axis of the strainable web material.

In the illustrated embodiment, a portion of the strainable web material, when subjected to an applied axial elongation in a direction substantially parallel to the longitudinal axis, causes the entire strainable web material to:
It is "shaped" to exhibit a controlled resistance along a predetermined axis (in the illustrated embodiment, substantially parallel to the longitudinal axis of the web material). As used herein, the term "formed" refers to the web material that substantially remains in the desired structure or shape when not subjected to any externally applied elongation or force. Refers to the creation of a desired structure or shape. Suitable methods of forming a material, such as the strainable web material described herein, include, but are not limited to, embossing with mating plates or rolls, thermoforming, high pressure hydraulic forming or casting. It is not done.

The web material used in the present invention has a strainable network containing at least a first region and a second region, wherein the first region has a shorter `` surface path length '' than that of the second region.
It has a distortable network of adjacent, "distinguishable" and "dissimilar" areas. The surface path length is measured parallel to a given axis when the material is in an untensed state. As used herein, the term "molded part"
Refers to the portion of the material that has the desired structure or shape of the strainable network. As used herein, the term "surface path length" refers to a measurement along the terrain surface of the area in question in a direction parallel to a given axis. As used herein, the term "distinguishable" or "dissimilar" when referring to a region is measurable when measured in parallel to a predetermined axis while the web material is in an untensed state. Refers to regions within the strainable network that have different surface path lengths.

In the preferred embodiment shown in FIGS. 6 and 7, the first region 664 comprises a substantially planar region. That is, the material in the first region 664 is substantially in the same state before and after the forming process that the strainable web material undergoes. The second region 666 includes a first surface and a second surface of the first region 664 (6, respectively).
64A and 664B) include a number of continuous and interconnected variations 674 extending alternately across both planes. In other embodiments, the deformation 674 may extend beyond a plane of either the first surface or the second surface of the first region.

Variant 674 has a first axis 676 that is substantially parallel to the transverse axis of the web material and a second axis 677 that is substantially parallel to the longitudinal axis of the strainable web material. Variant 7
Four first axes 676 are at least equal to the second axis 677, and are preferably longer than the second axis 677. In order to improve the two-stage resistance to elongation behavior characteristics of the (side flap) of the present invention, the ratio of the first shaft 676 to the second shaft 677 is at least 1:
1, more preferably at least 2: 1. Generally, the greater this ratio, the more pronounced the two-step resistance versus elongation characteristics of the web material.

The first area 664 and the second area 666 each have a “projection path length”. As used herein, the term “projection path length” refers to the surface of the web material 660 measured parallel to a predetermined axis (ie, parallel to the longitudinal axis) of the web material. Refers to the length of the area when viewed vertically. The projection path length of the first area 664 and the projection path length of the second area 666 are equal to each other.

However, the first region 664 has a surface path shorter than the surface path length L2 of the second region 666, when measured topographically parallel to the longitudinal axis of the web material when the web material is in an untensed state. It has a length L1. Strainable web material
In order to improve the two-step force versus elongation behavior characteristics of 660, the surface path length of the second region 666 is at least about 15% greater than that of the first region, and more preferably is greater than that of the first region. 30% larger, most preferably at least about 70% larger than that of the first region.

Web material 660 exhibits a modified "Poisson lateral shrinkage effect" which is substantially less than that of otherwise identical unformed web materials. As used herein,
The term "Poisson lateral contraction effect" describes the lateral contraction behavior of a material that has been subjected to an applied elongation. Preferably, the Poisson lateral shrinkage effect of the web material of the present invention is less than about 0.4 when subjecting the web to about 20% elongation. Preferably, the web material comprises about 4 web materials.
It exhibits a Poisson lateral contraction effect of less than about 0.4 when subjected to 0, 50 or 60% elongation. More preferably, the Poisson lateral shrinkage effect is less than about 0.3 when subjecting the web material to 20, 40, 50 or 60% elongation.

For the strainable web material, the direction of the applied axial elongation, indicated by arrow 680, is the first axis 6 of the deformation 674.
Substantially perpendicular to 76. (The amount of axial elongation is distance D
Is). Deformations 674 can be stretched in a direction that is substantially perpendicular to their first axis 676, so that the direction of applied axial elongation to cause stretching in the strainable web material is also Substantially perpendicular to the first axis 676 of the variant 674.

The direction of the applied axial elongation, indicated by arrow 680, is substantially perpendicular to the first axis 676 of the deformation 674, while the applied axial elongation having a longitudinal component is the same as that of the strainable web material. Will extend in the direction of the applied axial elongation.

FIG. 10 shows the resistance of the molded polymeric web material of the present invention, aligned with a similar curve 710 for a flat base polymer film from which the web material is molded.
A representative graph of the elongation curve 720 is shown. Referring now to the force-elongation curve 720, the initial substantially linear low force versus elongation stage I, designated 720a, the transition zone designated 720b and beyond, the web material undergoes additional permanent deformation. There is a substantially linear Phase II designated 720c, which exhibits substantially higher force versus elongation behavior, corresponding to the resisting force walls that can be experienced.

As can be seen in FIG. 10, the shaped web material having a strainable network exhibits a controlled multi-step behavior when subjected to an applied elongation in a direction parallel to the longitudinal axis of the web material. Is shown. The applied resistance to elongation, when compared to curve 710, which does not show this behavior, is curve 7
There are significant differences between the 20 stages I (720a) and II (720c). Referring now to FIG. 6, when the web material is subjected to the applied axial elongation indicated by arrow 680 in FIG. For the applied elongation corresponding to,
Gives most of the initial resistance P1. While in Phase I, the deformation 674 in the second region 666 is largely out of the plane of applied elongation and provides the least resistance to applied elongation. In the transition zone between stages I and II, the deformation 74 becomes linear with the applied elongation. In stage II, as seen in FIG.
The deformation 674 within 666 becomes substantially linear with the plane of applied elongation and begins to resist further elongation. Now, the second region 666 contributes to the second resistance P2 against further elongation. The first and second resistance to elongation gives the total resistance PT, which is the first area
Greater than the resistance provided by the 664. Therefore,
The overall slope of the force-elongation curve in Stage II is characteristic of a force wall that is significantly greater than the overall slope of the force-elongation curve in Stage I.

The resistance P1 is substantially larger than the resistance P2 when (L1 + D) is smaller than L2. When (L1 + D) is smaller than L2, the first region 664 generally provides an initial resistance P1 that satisfies the following equation.

When (L1 + D) is greater than L2, the first region and the second region generally satisfy the following equation, and the applied elongation D
To give the total resistance PT together.

The maximum elongation that occurs during stage I is considered to be the "available elongation" of the web material. The available stretch can be effectively determined by inspection of the force-elongation curve 720, and the approximate point where there is a bend in the transition zone between stage I and stage II is the extension of the "available stretch" It is a percentage point. Available stretch ranges from about 10% to 100
%, And this range of elastic-like response is often found to be of interest in disposable absorbent articles, where the surface path length L2 in the second region 666 is
The range over the surface path length L1 in the first region 64 and the properties of the base film can be largely controlled. Significantly higher forces are required to obtain a percent elongation in the base film that is equivalent to the percent elongation in the web 660. The approximate range of Stage I can be controlled as desired by adjusting the path length, L1 and L2 under untensioned conditions. Stage I force-elongation behavior can be controlled by adjusting the width, thickness and spacing of the first region 664 and the properties of the base film.

When subjecting the web material of FIG. 6 to the applied elongation, the web material will elongate in the direction of the applied elongation and, unless it elongates to the yield point, its substantially untensile when the applied force is removed. This web material exhibits elastic-like behavior. This web material can be subjected to multiple applications of the applied elongation without losing its substantial ability to recover. Thus, the web material can return to its substantially untensioned state when the applied elongation or force is removed.

This web material can be easily and reversibly stretched in the direction of the applied axial elongation in a direction that is substantially perpendicular to the first axis 676 of the deformation 674, but the web material is deformed. It is relatively inextensible in a direction that is substantially parallel to the first axis 676 of the object 674. The plastic deformation provided by the deformation 674 causes the deformation to be oriented in one direction, i.e., substantially perpendicular to the first axis of the deformation, and substantially perpendicular to the direction of elongation. While it is relatively inextensible in direction, it extends in a direction substantially parallel to the first axis of the deformation. In another aspect, an extensible web material
At 660, a first region 664 extending outwardly from the center and a second region 666 disposed concentrically about the center to make the extensible web material 660 extensible in more than one direction. Can be provided.

The amount of applied force required to stretch the web material depends on the inherent properties of the base material forming the web material and the width and spacing of the undeformed regions 664, with narrower and wider spacing The undeformed area 664 provided with
Requires lower elongation force to obtain the desired elongation.
The first axis 668 (ie, length) of the undeformed region 664 is preferably greater than the second axis 669 (ie, width), with a preferred length to width ratio of about 5: 1 to 300: 1. .

The depth and number of variations 674 can also be varied to control the applied force or stretch required to stretch the web material of the present invention. In one preferred embodiment, the variant is formed by two rigid plates having outer dimensions of 5.0 inches x 12 inches x 0.75 inches.
One surface of each plate is substantially triangular in cross section, measuring 0.030 inches at the base and 0.008 at the top
There is a series of meshing teeth tapering to the top with a radius of inches. The tooth centerlines are equally spaced and in 0.030 inch increments. The "teethed" side of one plate is cut with a series of grooves parallel to each other and perpendicular to equally spaced teeth. These grooves are 0.031 inches wide, continuous over the entire length of the plate,
Spaced 0.25 inches apart. These grooves correspond to undeformed areas of the deformed web material.

The preferred LLDPE base material is placed between the plates in a hydraulic press with a platen larger than the plates to distribute the pressure evenly. Plate at least 4,
Compress under a load of 000 pounds. Next, the formed web material is removed from between the plates. For a given number of variants, increasing the height or degree of deformation imparted to the variants increases the available stretch or elongation. Similarly, for a given height or degree of deformation,
If the number or frequency of deformations is increased, the available stretch or elongation is increased.

Extension force, extension modulus and available extension (extension)
Stretching properties including the shrinkage force of the extensible side panels 30,
It has been found that elastic creep, elastic hysteresis, and rate of shrinkage are important considerations in the performance of the extensible side panels 30 and the diaper 20. This stretch property gives the person and wearer of the diaper an overall perceived "stretchability" during use. These also affect the ability of the diaper to obtain an adequate degree of application stretching (ie, for a "normally" perceived tension of the diaper during application, the total amount of stretching available will be It is desirable to achieve / maintain a good fit). An extensible side panel with a relatively high elongation modulus,
Red marks can be made on the wearer's skin, while relatively low elongation modulus can cause sagging / slipping on the wearer. A side panel with available stretch that is too small may not provide a suitable level of body comfort and may contribute to making the diaper uncomfortable for the wearer and difficult to apply to the wearer. Diapers with extensible side panels that have very little shrinkage force cannot stay in the normal position of the wearer, which tends to sag / slip during wear, resulting in poor fit and confinement.

Typical extensible materials exhibit a hysteresis loop of force in their stress-strain properties. That is, for a given elongation, the force required to elongate the extensible material uniaxially (elongation force) is the force that the extensible material emits when the extensible material is contracted from a state where it has been previously extended. (Contraction force). The former curve can be called the "load curve"
The latter can be called the "unloading curve". “Load” extension force (extension force) is felt by the person applying the diaper when the extensible side panels are extended to apply the diaper to the wearer. The wearer “feels” the “unloading” force (contraction force) even deeper when wearing the diaper. Therefore, the hysteresis loss must not be so large that the contractile force is low enough to allow diaper sagging / gap formation during wear.

For the "composite extensible side panels" of the present invention, it has been found that the minimum amount of elongation, contraction and elongation is preferably within the specified ranges. (As used herein, the phrase "composite extensible side panel" refers to the extensible side panel as a whole, including all materials or combinations of materials, in all shapes.) The stretching force for initially stretching the composite extensible side panel is preferably about
100 grams to about 1200 grams. More preferably, the stretching force is from about 200 grams to about 1000 grams. When the composite extensible side panel is held in the extended state for about 5 minutes, the composite extensible side panel may maintain a contractive force of about 75 grams to about 900 grams, more preferably about 100 grams to about 850 grams. preferable. Composite extensible side panels having stretching and contracting forces within these ranges will preferably provide at least about 0.15 inches of extension in the direction of the applied force.

The extensible side panels 30 may also be provided with differential extensibility along the longitudinal axis when extended in the lateral direction. As used herein, the term "differential extensibility" refers to non-uniformity, as measured in the direction of elongation, at various points along an axis oriented substantially perpendicular to the direction of elongation. It is used to mean a material that has a certain degree of extensibility. For example, this includes, for each of the extensible material (s),
Altering the elastic modulus or available stretch or both is involved. Differential extensibility can be obtained in a number of different ways. Extensible side panel 30
May have the extensible properties of a number of combined extensible materials, extensible materials or other materials that make extensible side panels that may be non-uniform or of a number of shapes for the extensible materials. For example, differential extensibility may be such that increased or decreased (altered) lateral extensibility is obtained in a portion of extensible side panel 30 other than the adjacent panel, elongating or retracting force, modulus. Alternatively, by using an elongate material having other unique properties, it can be obtained at selected adjacent portions of the extensible side panel. The extensible material may also have an altered length, size and shape to provide differential extensibility. Other methods of altering the properties of the material forming the extensible side panel 30 can also be used, as is known in the art.

The diaper 20 is also preferably provided with a tightening system 8 for adapting the diaper to the wearer. The fastening system 48 maintains the first waist region 50 and the second waist region 52 in an overlapping configuration to form a side closure.
The tightening system 48 further includes a waist panel 36 and a thigh panel.
Maintaining tension at both 38 holds the diaper 20 on the wearer, as well as providing an improved dynamic fit around the wearer's legs and waist. The tightening system 48 may include, but is not limited to, pressure sensitive adhesives, adhesive materials, mechanical tightening means, hook-and-loop fasteners, or any combination thereof, or any other mounting means known in the art. All known mounting means may be provided. An example of a suitable adhesive tape tab fastening system can be found on November 19, 1974.
U.S. Patent No. 3,848,594 issued to Buell on
No. 4,662,875, issued May 5, 1987 to Hirotsu and Robertson, each of which is incorporated herein by reference. Examples of other closure systems containing mechanical closure systems useful in the present invention include U.S. Pat. No. 4,869,724 issued to Scripps on September 26, 1989, and Scrip on July 11, 1989.
No. 4,846,815 issued to Ps and US Pat. No. 5,242,436 issued to Weil, Buell, Clear and Falcone on Sep. 7, 1993, each of which is incorporated herein by reference. It has been disclosed.

As shown in FIG. 1, the fastening system 48 includes at least one pair of first fastening members 40 having a main centerline F.
And at least one second fastening member 42. The main center line F of the first fastening member is generally a diaper
When 20 is fitted to the wearer, it is parallel to the line of tension applied perpendicular to the extensible side panels 30.
The main center line F of the first fastening member is preferably in its uncontracted state, the longitudinal center line L and the transverse center line T of the diaper 20.
Both at an angle. In a preferred embodiment, one first tightening member is located on the inner surface 44 of each extensible side panel 30 adjacent the non-edge 82. The first tightening member 40 is preferably joined to the distal edge 82 of each extensible side panel 30, preferably overlapping the boundary between the waist panel 36 and the thigh panel 38. This causes the first tightening member 36 to tension to "activate" both the waist panel 36 and the thigh panel 38, thereby expanding and contracting the panel more actively with the movement of the wearer. Is secured. The second fastening member 42 is preferably the outer surface of the containment assembly 22 in the second waist region 52
It is arranged on 46 and can be engaged with the first fastening member 40.

In a particularly preferred embodiment, the diaper 20 includes at least one base “stiffener” 84 located adjacent the base edge 80 of each extensible side panel 30. As used herein, the term “stiffening member” refers to all elements of the diaper, all elements of the extensible side panel 30 or the extensible side panels 30 that provide compression / buckling resistance in at least one direction. Or any other element joined to the containment assembly 22 or both of the diaper 20. Due to the compression / buckling resistance provided by the base stiffening member 84, the diaper, preferably in the longitudinal direction along the longitudinal edge 56 of the containment assembly 22 in the first waist region 50.
Focusing of 20 is reduced. The base stiffening member 84 also reduces the tendency of the first waist region 50 and the distal edge 58 of the containment assembly 22 located within the waist shape 34 to become rounded as a result of active wearer movement. Thus, by providing an improved dynamic fit around the waist and thighs of the wearer, the base stiffening member 84 reduces the likelihood of gap formation in the waist region of the diaper 20 and provides a multi-directional extensible side. Panel 30
The effectiveness of the is increased.

The base stiffener 84 may be disposed between the topsheet 24 and the backsheet 26, but the base stiffener 84 may also be positioned on the outer surface 46 of the backsheet 26.
On the inner surface 44 or in a number of other shapes. The base stiffening member 84 can also take many different sizes, shapes, configurations and materials. For example, the base stiffening member 84 can be formed from one or more stiffening components, and the base stiffening member 84 can have varying widths, lengths, thicknesses, and shapes. . The base stiffening member 84 is preferably a topsheet 24, a backsheet
It comprises part of the material that makes up one or more diaper elements, including the material or materials used in the extensible side panels 30 or 26. In addition, the base stiffening member 84
Another piece of material may be provided adjacent the base edge 80 of the extensible side panel 30. Suitable materials for use as the base stiffening member 84 of the present invention include woven webs, nonwoven webs, films, molded films, foams,
Laminate materials, including film laminates or nonwoven laminates of two or more nonwoven layers, screens, corrugated materials that provide stiffness in at least one direction, and all of the above materials or other materials known in the art Are included.
The base stiffening member 84 can be joined to the containment assembly 22 by any means known in the art.

In another preferred embodiment, the diaper further comprises a distal stiffening member 86 disposed adjacent the distal edge 82 of the extensible side panel 30. Preferably, the distal stiffening member 86
Is joined to both the waist panel 36 and the thigh panel 38. In this configuration, the distal stiffening member 86 applies any tension or force applied to the distal edge 82 of the extensible side panel 30.
Dispense through both the waist panel 36 and the thigh panel 38.
The distal stiffening member 86 also preferably has an extensible side panel.
Along the length of the distal edge 82 of the 30
Has a compression / buckling resistance that reduces the likelihood of buckling or differing when the wearer moves. Thus, in a preferred embodiment, a distal stiffening member 86 disposed adjacent the distal edge 82 of the extensible side panel 30 allows the diaper to be properly adapted to the wearer and a waist panel.
Proper placement of 36 and thigh panel 38 will ensure that they expand and contract with active wearer movement. As with base stiffener 84, distal stiffener 86
Can take many different sizes, shapes, arrangements and materials. The distal stiffener 86 may be formed from one or more stiffening components, and
86 may have varying widths, lengths, thicknesses and shapes. In a preferred embodiment, the distal stiffener 86 forms part of the material from which the extensible side panels 30 or other elements of the diaper 20 are made. Also, the distal stiffening member 86 may include another piece of material disposed adjacent the distal edge 82 of the extensible side panel 30. Materials suitable for use with the distal stiffener 86 and methods for joining the distal stiffener 86 to the diaper 20 have been previously described herein with respect to the base stiffener 84.

The diaper 20 preferably has one of the waist regions, preferably a first waist region 52, positioned below the back of the wearer, and pulls the rest of the diaper 20 between the wearer's legs while the other. The waist region, preferably the second waist region 50, is applied to the wearer by placing it across the front of the wearer. Next, the person applying the diaper receives the first fastening member 40 disposed on each of the extensible side panels 30.
, And wind one extensible side panel 30 around the waist. In embodiments where at least a portion of the waist panel 36 and the thigh panel 38 are joined together, the tension created by wrapping the extensible side panel 30 around the waist causes both the waist panel 36 and the thigh panel 38 to Activated (double activation) so that they expand and contract with the movement of the wearer. (In embodiments where the waist panel member and the thigh panel member are not joined together,
Dual activation occurs when the diaper separately applies tension to the individual waist and thigh panel members). Then
The person applying the diaper repeats this process for the other extensible side panel 30. By engaging the first fastening member 40 with the second fastening member 42 located in the second waist region 52, a waist closure is formed.
Due to the formation of the waist closure, the diaper 20 initially provides the wearer with a consistent fit. If the diaper 20 is fitted asymmetrically, the diaper will self-adjust during wear to achieve an improved fit. When fitted to the wearer, the multi-directional extensible side panel 30 expands and contracts with the wearer's movement, improving over the time of wear, after the diaper 20 has been fully loaded with exudate. Gives a dynamic wearing feeling. The improved dynamic fit reduces sagging and gap formation of the diaper 20 in the waist region and thigh region while increasing wearer comfort.

FIG. 11 illustrates another alternative embodiment of the present invention having a single component extensible side panel. The extensible side panel for this embodiment is designated as 30. The extensible side panel 30 is comprised of a single piece of extensible material in which a first portion of the extensible side panel 30 forms a waist panel 36 and a second portion forms a thigh panel 38. The extensible material may be comprised of a single layer material or a laminate of two or more materials joined together. The multi-directional stretching properties of the single piece extensible side panel 30 are preferably obtained by performing a mechanical operation on the material, such as pleating, corrugating or ring rolling, to create regions of different extensibility behavior. . One preferred mechanical operation suitable for providing the material used in the extensible side panel 30 with multi-directional stretching properties is described above with respect to a structurally elastic-like film web. In addition, the extensible side panel 30 is used for cutting, cutting, and cutting the extensible material forming the extensible side panel.
It can be composed of an extensible material having regions of different elastic behavior, obtained by means other than the mechanical operations described above, such as bonding or folding. In such an embodiment, shredding, folding, bonding or cutting in the material is not limited to any particular size or shape. For example, the material from which the extensible side panel 30 is made may be completely or partially cut or have portions cut or joined to create different extensible properties in the extensible side panel 30. It may be. (As used herein, the term “completely cut” refers to a single component extension having a cut or slit that runs the entire distance between the base edge 80 and the distal edge 82 of the extensible side panel 30. Refers to the flexible side panel 30. The term "partially cut" refers to the proximal edge 80 to the distal edge 82 of the extensible side panel 30.
(Refers to a single component extensible side panel 30 having cuts or slits that do not extend to full length).

In a preferred embodiment, the waist panel 36 preferably has an extensible primary direction G around the wearer's waist. Thigh panel
38 preferably has an extensible main direction H that is angled with respect to the lateral and longitudinal directions about the wearer's thigh. Figure
11 shows an embodiment of a single-piece extensible side panel 30 with a distinct border between the waist panel and the thigh panel, defining where the elastic properties of each panel begin and end. (In FIG. 11, the boundary is indicated by line C). The boundary between the waist panel 36 and the thigh panel 38 may be located anywhere on the extensible side panel. However, extensible side panels are contemplated where there is no clear boundary between the waist panel and the thigh panel. For example,
The extensible side panels can be configured such that regions of different elastic behavior partially overlap or do not meet at a common boundary.

FIG. 12 is joined to the containment assembly 22 of the diaper 20 and the extensible material is folded so as to extend through the multi-directional extensible side panels 30, the waist shape 34 and at least a portion of the crotch region 54 of the diaper 20. Figure 5 illustrates another single component embodiment of the invention having a single piece of extensible material. The extensible material may be uniform throughout or have regions with different extensibility characteristics. In one embodiment, the extensible material extends along at least a portion of the crotch region 54 of the containment assembly 22 of the diaper 20 juxtaposed with at least one longitudinal edge 56. In the first waist region 50, the extensible material is folded down to form a thigh panel base rim 78. From the thigh panel base edge 78, the extensible material extends outwardly from the containment assembly 22, preferably at an angle to the transverse and longitudinal directions. The outwardly extending extensible material forms the thigh panel 38 and is folded inward at points spaced laterally outward from the longitudinal edges 56 of the containment assembly 22. This fold preferably forms the distal edge 82 of the extensible side panel 30 and the waist panel distal edge 74 and the thigh panel distal edge 76. The extensible material folded inwardly extends from the distal edge 82 of the extensible side panel 30 to the distal edge 58.
Extending to a location on the longitudinal edge 56 of the containment assembly 22 in the first waist region 50 adjacent to the waist panel 36. From the waist panel base edge 72 (where the waist panel 36 is joined to the containment assembly 22), the extensible material extends laterally across the first waist region 50 adjacent the distal edge 58 of the diaper 22. . The same piece of extensible material further extends laterally outwardly from the other longitudinal edge 56 of the containment assembly 22 and is folded as described above to form waist panels 36 and opposing extensible side panels 30. It forms at least a portion of the thigh panel 38 as well as the crotch region 54 of the containment assembly 22.

Other alternative embodiments where a single piece of extensible material extends through multiple components of the diaper 22 are also contemplated. In one preferred alternative embodiment, a single piece of the extensible material is folded to form only the waist panel 36 and the thigh panel 38.
In this configuration, the waist panel distal edge 74 and the thigh panel distal edge 76 are formed by folds of extensible material. The waist panel 36 and the thigh panel 38 extend from the fold (the distal edge 82 of the extensible side panel) to the containment assembly 22. The inclusion of a single piece of extensible material in multiple components of the diaper has the advantage of reducing the number of individual elastic components that must be formed separately and attached to the containment assembly.

Figure 13 is a pull-on absorbent article, infant training pants,
Suspended diaper crotch illustrates an alternative embodiment of the invention, such as a brief. In a preferred embodiment, the side panel 30 has a base edge 80 and a distal edge 82, respectively, and includes a waist panel 36 and a thigh panel 38. Preferably, each side panel 30
At least a portion of the base edge 80 of the
And is permanently joined to the diaper 20 within the first waist region 50. At least a portion of the respective distal edge 82 of the side panel 30 is preferably permanently affixed to the diaper 20 in the second waist region 52 juxtaposed with one of the longitudinal edges 56. In an alternative preferred embodiment, each terminal edge 82
Is permanently joined to at least a portion of an ear flap 62 located within the second waist region 52. (As used herein, the term "permanent" is used to specify that one element of the diaper is joined to another element or group of elements of the diaper so that it cannot be refastened. However, it is possible to break the permanent bond so that the diaper can be removed if desired without pulling down the diaper,
Sometimes even better). In a preferred embodiment, the side panels 30 include a waist panel 36 and a thigh panel 38, respectively. Each waist panel 36 preferably forms part of a distal edge 58, and each thigh panel 38 preferably forms part of a diaper that covers the wearer's legs.

The side panel 30 of the present invention provided in the suspended configuration of FIG. 13 preferably has at least 100 of its relaxed length.
Has the ability to stretch%. More preferably, the side panel 30 has the ability to stretch at least 200% of its relaxed length. Thus, in most embodiments, the side panel will have the ability to extend at least one inch from its relaxed length. Examples of materials that can provide such stretching include two layers of Fiberweb E004204 that are subsequently mechanically strained to form a zero strain stretch laminate, as described above for the stretch side panels.
2.0 mil Clopay 2870-A elastomeric film sandwiched between nonwovens. In another preferred embodiment, the side panel 30 can be fully or partially ventilated (ie, a film having slits, holes or gaps through which air can pass). Also, the side panels may be constructed of a breathable or microporous material such as Clopay P18-2321 film.

The multi-directional side panel 30 may include all of the above-described side panel shapes or materials or any other shape or material that provides the unique multi-directional extension characteristics disclosed above. In a preferred embodiment, embodiments are contemplated in which the side panels 30 have the same structure, but the side panels 30 have different structures. (The term "identical structure," as used herein, refers to side panels that include the same structural components and that are mirror images of one another.)

While particular embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. Thus, it is intended that all such changes and modifications that fall within the scope of the invention be covered by the appended claims. 2

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-35663 (JP, A) JP-A-3-70123 (JP, U) JP-A-6-5615 (JP, U) Table 9- 505227 (JP, A) US Patent 5,358,500 (US, A) UK Patent Application Publication 2080093 (GB, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61F 13/49 A41B 13/04 A61F 5 / 44 A61F 13/496 A61F 13/56

Claims (10)

(57) [Claims] 1. An absorbent article having a first waist region and a second waist region, comprising: a) a pair of longitudinal edges, a distal edge disposed in the first waist region, and a second waist region. A confinement assembly having a distal edge disposed therein, the confinement assembly comprising an absorbent core; and b) disposed along each of the longitudinal edges of the confinement assembly in the first waist region. An extensible side panel projecting laterally outwardly from a base edge disposed adjacent the longitudinal edge of the containment assembly and laterally outwardly from the base edge. Wherein the side panels comprise a waist panel and a thigh panel, the waist panel being longitudinally outward of the thigh panel, and within the first waist region. Less of the terminal edges being arranged The thigh panel forms at least a portion of an absorbent article covering a wearer's leg, the waist panel has an extensible first direction, and the thigh panel is A second direction of extensibility that is not parallel to the first direction of elasticity, wherein at least a portion of the distal edge of each side panel is permanently attached to at least a portion of the absorbent article in the second waist region. An absorbent article characterized in that it is joined together. 2. Each of the extensible side panels comprises a fold intermediate the waist panel and the thigh panel, the fold preferably forming at least a portion of the distal edge of the extensible side panel. The absorbent article according to claim 1, wherein 3. The absorbent article according to claim 1, wherein at least a portion of each of the extensible side panels is an extension of at least one component of the containment assembly. 4. A disposable pant-like absorbent having a longitudinal centerline, a lateral centerline, a first waist region, a second waist region longitudinally opposed to the first waist region, and a pair of terminal edges. A) a containment assembly having: a) a pair of longitudinal edges, a distal edge located in the first waist region, and a distal edge located in the second waist region; Comprising: a permeable topsheet, a liquid-impermeable backsheet joined to the topsheet, and an absorbent core disposed between the topsheet and the backsheet; A multi-component extensible side panel disposed along each of the longitudinal edges of the containment assembly in the first waist region and projecting laterally outward therefrom; Is the confinement Each of the extensible side panels having a base edge disposed adjacent to the longitudinal edge of the yellowtail and a distal edge laterally outwardly spaced from the base edge; A waist panel member having a first direction, wherein the first direction of extensibility is oriented toward the lateral centerline and a vector component that is oriented outward in a lateral direction greater than zero; A waist spring base edge adjacent to the longitudinal edge of the containment assembly, preferably having a second vector component greater than zero; a waist panel end edge laterally opposed to the waist panel base edge; A waist panel first lateral edge extending between the waist panel base edge and the waist panel distal edge, and a waist panel second lateral edge vertically facing the waist panel first lateral edge; A waist panel first lateral edge of the distal edge located within the first waist region; Section to form a,
And ii) a thigh panel joined to the waist panel, wherein the thigh panel has an extensible second direction that is not parallel to the extensible first direction; The second direction of sex has a vector component oriented outward in a lateral direction greater than zero and a second vector component oriented away from the lateral centerline, preferably greater than zero. A thigh panel base edge adjacent to the longitudinal edge of the containment assembly, a thigh panel distal edge laterally opposed to the thigh panel base edge, the thigh panel base edge and the thigh panel distal edge; A thigh panel first lateral edge extending between the thigh panel first lateral edge and a thigh panel second lateral edge longitudinally opposed to the thigh panel first lateral edge, wherein the thigh panel member comprises the waist panel member Is a separate element from Ri,
The thigh panel second lateral edge forms a portion of a diaper that covers a wearer's leg, and at least a portion of each of the distal edges of the side panel is at least one of the absorbent articles in the second waist region. An absorbent article, which is permanently bonded to a part. 5. The absorbent article according to claim 4, wherein at least a part of the waist panel terminal edge is joined to at least a part of the thigh panel terminal edge. 6. The device according to claim 6, further comprising a base stiffening member joined to at least a portion of each of said extensible side panels adjacent said longitudinal edge of said containment assembly, preferably said distal end of each of said extensible side panels. An absorbent article according to any preceding claim, comprising an end stiffening member joined to at least a portion of the rim. 7. The absorbent article according to claim 1, wherein each of said extensible side panels comprises a structurally elastic film web. 8. The absorbent article according to claim 1, wherein said waist panel member and said thigh panel member are composed of different materials, said materials having different extensibility characteristics. 9. The device further comprising ear flaps extending laterally outwardly from the longitudinal edge in the second waist region, preferably at least a portion of the distal edge of each of the side panels. An absorbent article according to any preceding claim, wherein is permanently bonded to at least a portion of one of the ear panels. 10. The absorbent article according to claim 1, wherein said side panel is made of a breathable material or at least partially breathable.