JP4364038B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

Conventionally, in pants-type diapers and diaper covers that are absorbent articles, the front and back of the diaper are properly oriented in the same way as normal pants in order to ensure that the function is exerted and that the wearer feels comfortable wearing It is necessary to install it. Therefore, in the past, contrivances have been made such as attaching a display to the diaper to assist the judgment before and after.
Specifically, for example, a front mark or a back mark is attached to a portion corresponding to the abdominal side or the back side at the time of wearing (for example, Patent Document 1), or the color of the elastic member disposed in the waist opening of the diaper A device for assisting the wearer to determine before and after has been made, for example, by changing the position between the ventral side and the back side (for example, Patent Document 2).
JP-A-8-117278 JP-A-9-84824

However, when the wearer is, for example, a semi-blind person, a totally blind person, an amblyopic person due to old age, etc., in the diaper and diaper cover described in Patent Document 1 and Patent Document 2, identification of front marks and back marks and color identification It may be difficult to stick, and it was very inconvenient.
Then, the subject of this invention is providing the absorbent article which can obtain a comfortable mounting feeling, regardless of which direction, without performing front-back determination.

In order to solve the above-described problem, the invention according to claim 1 includes an inner sheet disposed on a surface in contact with a human body, an outer sheet disposed outside the inner sheet, the inner sheet, and the outer surface. In an absorbent article comprising a main body part provided with an absorbent body disposed between the seat and the leg-periphery part that holds around the leg of the wearer when worn, the leg-periphery part is open from the leg-periphery opening end of the main body part. An elastic leg-periphery sheet attached to cover the entire surface of the main body so as to extend to the leg-surrounding opening side and so that the main body has elasticity; The shape of the leg opening end is a shape that fits around the leg on the abdomen side of the wearer at the time of wearing, and the main body part and the leg are attached regardless of whether the absorbent article is worn forward or backward. The hips of the wearer are covered with the surrounding seat And wherein it is in the jar.

  Here, “whether worn forward or backward” means that when one side of the absorbent article is located on the front side of the wearer (forward side), the other side is located on the rear side. On the contrary, when one surface is located on the rear side of the wearer (rearward), this means that the other surface is located on the front side (forward). That is, when either one of the surfaces is facing forward, the other surface is facing backward, and any surface is not limited to be facing forward or backward.

The invention according to claim 2 is the absorbent article according to claim 1, wherein the leg-surrounding sheet is a film-like, net-like, or knitted-like stretchable sheet formed of a thermoplastic elastomer. It is characterized by .

  According to the first aspect of the present invention, the shape of the opening around the leg of the main body is a shape that fits around the leg on the abdomen side. The leg-periphery opening end formed by the stretchable leg-periphery sheet extending in the direction of the opening is shaped to cover the wearer's buttocks.

As a result, in the leg opening that holds the circumference of the leg on the wearer's belly when worn, the leg leg sheet having elasticity fits and fits by contracting substantially along the shape of the leg circumference In the leg-periphery opening that holds around the leg on the back side of the wearer, the leg-peripheral seat having stretchability stretches and spreads to wrap the wearer's buttocks. Therefore, since it fits both the ventral leg circumference and the dorsal leg circumference, it is possible to wear the absorbent article in either a forward or backward orientation, which is comfortable. A feeling of wearing will be obtained.
Therefore, it is not necessary to make a judgment before and after the absorbent article at the time of wearing, and the labor of the wearer and caregiver can be reduced.

  In addition, because the leg seat has elasticity, the leg seat shrinks around the wearer's belly leg and fits properly, and the leg seat's back leg stretches and spreads appropriately. The collar part is wrapped and fitted, and there is no need to provide an elastic member around the leg part, and the cost can be reduced by adopting a structure in which the leg part sheet is attached.

In addition, by sticking the leg-surrounding sheet so as to cover the entire surface of the main body, the entire absorbent article has elasticity, so that it fits more with the wearer and separates the elastic members around the abdomen and waist This eliminates the need to provide the device and can reduce the cost.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.
In this embodiment, a disposable pants-type paper diaper as an absorbent article will be described as an example.
FIG. 1 is a perspective view of a disposable pants-type paper diaper of Embodiment 1 to which the disposable pants-type paper diaper of the present invention is applied. 2 is a developed view of FIG. 1, and FIG. 3 is an explanatory diagram for explaining the configuration of FIG.

  As shown in FIGS. 1 to 3, the disposable diaper 1 includes a liquid-permeable inner sheet 2 disposed on a surface in contact with a human body, an outer sheet 3 disposed on the opposite side of the inner sheet 2, an inner sheet 2 and an outer surface. An absorbent body 4 interposed between the sheet 3, a leakage prevention sheet 10, a main body 5 including a plurality of elastic members 91, 92, and the like, a leg-surrounding sheet 6 attached to the main body 5, Etc.

Further, the disposable diaper 1 forms a waist circumference opening portion 7 that forms a waist circumference portion 70 that holds the waist circumference of the wearer when worn, and a leg circumference portion 80 that holds the leg circumference. Between the abdominal side part 1A which has the leg periphery opening part 8 of a location, and is located in the wearer's abdominal side at the time of mounting | wearing, the back side part 1B located in the back side, between the abdominal side part and the back side part Therefore, it is divided into a crotch part 1C located at the crotch.
The abdominal side 1A and the back side 1B shown in FIGS. 1 and 2 may be reversed. That is, the abdominal side portion 1A described above is set as the back side portion 1B positioned on the back side of the wearer at the time of wearing, and the back side portion 1B described above is positioned on the abdominal side of the wearer at the time of wearing. It does not matter as 1A.
However, in the following explanation, for convenience of explanation, the abdominal part 1A and the dorsal part 1B are specified as shown in FIG.

The inner sheet 2 is a sheet that is provided on a surface that comes into contact with the human body when the paper diaper 1 is worn, and that plays a role of receiving body fluid and transporting it to the absorber 4.
Examples of the liquid-permeable sheet include those formed of a porous or non-porous nonwoven fabric, a porous plastic sheet, and the like. As the material fiber constituting the nonwoven fabric, either natural fiber or chemical fiber may be used.
Examples of natural fibers include cotton, cellulose (wood pulp), wool, silk, hemp and the like.
Examples of chemical fibers include olefins such as polyethylene (PE) and polypropylene (PP), polyesters including polyester (PET), polyamides such as nylon and aramid, and acrylics such as polyacrylonitrile (PAN). In addition to synthetic fibers, examples include regenerated fibers such as rayon and cupra, semi-synthetic fibers such as cellulose acetate and promix, and the like. Moreover, the bicomponent fiber (mixed fiber) etc. which combined the said raw material suitably other than PE / PP mixed nonwoven fabric and PE / PET mixed nonwoven fabric can also be used.

  As a method for producing a nonwoven fabric from these fiber materials, a known method can be used as appropriate. For example, a water punch method in which fibers are entangled with each other with a high-pressure water stream or a fiber is produced by a method similar to papermaking. Wet methods such as papermaking, chemical bond methods that are bonded with adhesives, dry methods such as thermal bond methods that are bonded with low-melting polymers and self-melting fibers, needle punch methods that are bonded by needling with special needles, polymer solutions And a direct method such as a flash spinning method in which a reticular fibril is formed by ejecting the slag from the die. Moreover, a nonwoven fabric can be manufactured also by the method etc. which combined these methods.

The outer surface sheet 3 is a sheet that is provided on the surface opposite to the surface that comes into contact with the human body when the diaper 1 is worn, and plays a role of preventing exudation and leakage of the body fluid and the like to the outside of the diaper 1.
As the outer surface sheet 3, for example, a sheet material having at least water shielding properties, such as polyethylene, and preferably a moisture permeable sheet material from the viewpoint of preventing stuffiness. As a sheet material having this water barrier property and moisture permeability, for example, a sheet is formed by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretched in a uniaxial or biaxial direction. The microporous sheet material obtained by is preferably used.
In addition, a laminated nonwoven fabric composed of a liquid-impermeable film layer and a breathable nonwoven layer may be used. A laminated nonwoven fabric is a nonwoven fabric called a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, for example, and is a nonwoven fabric having both liquid impermeability and air permeability.
In addition, the sheet | seat suitable as the outer surface sheet 3 other than the sheet | seat mentioned above can be used suitably.

  The absorbent body 4 is formed by combining an absorbent material such as cotton or pulp, or a sheet-like base material such as fiber or film and a superabsorbent polymer such as a superabsorbent polymer ( (Not shown) is covered with a liquid-permeable crepe paper (not shown) or the like. The absorber 4 may have a single layer structure or a structure divided into a plurality of layers. The absorber 4 is mounted at a position extending from the abdominal side 1A of the human body to the back side 1B through the crotch 1C between both legs.

The leakage prevention sheet 10 is a liquid-impermeable sheet that is placed around the waist of the wearer when the disposable diaper 1 is worn, and the body fluid that the absorbent body 4 cannot absorb or once the absorbent body absorbs the body The elastic member not only prevents leakage of body fluid exuded by pressure to the outside of the paper diaper 1 but also presses the elastic member 91 as a waist gather from the upper surface, so that the elastic member 91 is used when the paper diaper 1 is not used and used. Prevents 91 shift and twist.
More specifically, the leakage preventing sheet 10 has one end sandwiched between the outer sheet 3 and the outer sheet 3 folded back to the inner sheet 2 side at the waist opening 7, and at the other end. It covers a part of the upper surface of the absorber 4.
As the liquid-impermeable sheet, for example, the sheet mentioned in the outer sheet 3 can be used.

An elastic member 91 as a waist circumference gather is provided in the waist circumference portion 70 in the vicinity of the waist circumference opening 7, and an elastic member 92 as a stomach circumference gather is provided in the waist circumference portion 70 below the elastic member 91. Yes.
Since the elastic members 91 and 92 are provided, the disposable diaper 1 is preferably closely attached around the waist of the wearer, and not only can the fit be improved, but also the opening from the waist opening 7 can be realized. Prevents leakage and improves the feeling of use.
As the elastic member 91 as the waist gathers and the elastic member 92 as the belly gathers, for example, rubber thread can be used.

The main body 5 includes the inner surface sheet 2, the outer surface sheet 3, the absorbent body 4, the leakage prevention sheet 10, the plurality of elastic members 91, 92, 93 and the like described above.
As shown in FIG. 2, in the main body 5, the waist opening end that is the end of the waist opening 7 that forms the waist part 70 is provided in each of the abdominal side 1 </ b> A and the back side 1 </ b> B. It is provided one by one.
Moreover, the leg periphery opening end part 8a which is an end part of the leg periphery opening part 8 which forms the leg periphery part 80 is provided in the crotch part 1C on one side on both sides of the absorber 4 in between.
Furthermore, the leg periphery sheet | seat 6 is affixed on the leg periphery opening edge part 8a.

As shown in FIG. 3, the leg-surrounding sheet 6 is affixed to the outer surface sheet 3 side of the main body 5.
More specifically, the length of the leg-surrounding sheet 6 in the longitudinal direction is the length of the main body 5 (i.e., the length from the waist opening end of the ventral side 1A to the waist opening end of the dorsal side 1B). And the length (ie, width) of the portion corresponding to the surface of the leg-surrounding sheet 6 that is attached to the ventral portion 1A of the main body portion 5 is the width of the main body portion 5. The width of the portion equivalent to the width of the ventral side portion 1A and corresponding to the surface attached to the back side portion 1B is equal to the width of the back side portion 1B of the main body portion 5.
And the shape of the part corresponding to the surface affixed to the crotch part 1C of the main body part 5 of the leg periphery sheet | seat 6 is wider than the main body part 5, and is a shape formed by extending to the side.
Therefore, when the leg-surrounding sheet 6 is attached to the main body 5, the leg-surrounding sheet 6 extending laterally along with the inner surface sheet 2 and the like is visually recognized from the inner sheet 2 side of the main body 5. When viewing from the leg-surrounding sheet 6 side, which is the surface of the leg, only the leg-surrounding sheet 6 is confirmed .

  The leg periphery sheet | seat 6 is provided with a stretching property. Examples of the sheet having stretchability include polyolefin-based, polyurethane-based, polyester-based, or polystyrene-based thermoplastic elastomers, and the film-like, net-like, knitted, or nonwoven-like stretchability formed by these. The sheet can be suitably used as the leg-surrounding sheet 6.

  Affixing the leg-surrounding sheet 6 to the main body 5 includes an affixing method such as heat sealing or embossing, and it is desirable to use a hot melt adhesive to obtain strength. Examples of hot melt adhesives include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, styrene-isobutylene-styrene copolymers, aliphatic aromatic copolymers, and the like. Can do.

  As an application pattern of the adhesive for attaching the leg-surrounding sheet 6 to the main body 5, the adhesive may be applied to the entire surface of the main body 5 or the leg-surrounding sheet 6, but intermittently or intermittently. A typical application pattern may be used. Examples thereof include a beat coating method, a slot coating method, a spiral coating method, a curtain spray coating method, and a V slot coating method.

Next, the configuration of the leg periphery 80, which is a feature of the present invention, will be described.
As shown in FIG. 2, the leg-periphery portion 80 is provided around the stretchable leg affixed to the main body portion 5 so as to extend from the leg-periphery opening end portion 8 a of the main body portion 5 to the leg-periphery opening portion 8 side. A sheet 6 is provided.
The shape of the leg opening end 8a around the leg of the main body 5 extends through the approximate center in the length direction of the main body 5 (that is, the direction from the abdominal side to the back side). A line perpendicular to the direction (hereinafter referred to as a “center line”) M is substantially symmetrical between the ventral portion 1A and the dorsal portion 1B, and has a shape that fits around the ventral leg.

On the other hand, an end portion (hereinafter referred to as “leg opening end portion”) 8b of the leg periphery seat 6 that forms a free end in the leg periphery opening 8 is shaped to fit around the back leg, that is, the wearer. It has a shape that covers the buttocks.
Here, the leg opening end 8b has a shape sufficient to cover the wearer's buttocks with the abdominal portion 1A and the dorsal portion 1B with the center line M in the length direction of the main body 5 interposed therebetween. More preferably, the abdominal side portion 1A and the back side portion 1B are substantially symmetrical with respect to the center line M.

  That is, the leg-hole opening 8 includes a leg-hole opening end 8a having a shape that fits around the ventral leg and a leg-hole opening end 8b that has a shape that fits around the back leg and covers the buttocks. Two different shapes are provided at the same time.

According to the disposable diaper 1 according to Embodiment 1 described above, the shape of the leg-opening end 8a of the main body is a shape that fits around the leg on the abdomen side, while the leg-opening end of the main body 5 is provided. The leg-periphery opening end portion 8b formed by the leg-periphery leg-seat 6 extending from the 8a toward the leg-periphery opening portion 8 has a shape that covers the buttocks of the wearer. Thereby, in the leg periphery opening that holds the circumference of the leg on the wearer's ventral side at the time of wearing, the leg circumference sheet 6 having stretchability is fitted by contracting substantially along the shape of the circumference of the ventral leg, In the leg opening that holds the circumference of the leg on the wearer's back, the leg leg sheet 6 having stretchability wraps and fits the wearer's buttocks so that the disposable diaper 1 faces forward or It is possible to wear it in any direction from the rear, and a comfortable wearing feeling can be obtained.
Therefore, it is not necessary to make a judgment before and after the absorbent article at the time of wearing, and the labor of the wearer and caregiver can be reduced.

  Further, since the leg-surrounding sheet 6 has elasticity, the leg-surrounding sheet 6 contracts and fits appropriately around the wearer's abdominal leg, and extends and spreads around the leg on the wearer's back. Since the heel part is appropriately wrapped and fitted, it is not necessary to provide a separate elastic member in the leg periphery 80, and the cost can be reduced by adopting a structure in which the leg periphery sheet 6 is attached.

Furthermore, the paper diaper 1 provided with the leg periphery sheet | seat 6 can be manufactured by affixing the leg periphery sheet | seat 6 so that the whole surface of the main-body part 5 may be covered.
Thereby, the paper diaper 1 as a whole has elasticity, so that it is more fit for the wearer and there is no need to separately provide elastic members around the abdomen and waist, and the leg-surrounding sheet 6 is attached. This can further reduce the cost.

  In the present embodiment, the leg-surrounding sheet 6 is pasted so as to cover the entire surface of the main body 5, but may be pasted so as to cover the entire leg of the main body 5.

(Embodiment 2)
Next, a disposable pants-type disposable diaper 100 according to Embodiment 2 will be described with reference to the drawings.
FIG. 4 is an explanatory diagram for explaining a configuration of a disposable pants type disposable diaper (hereinafter referred to as “paper diaper”) 100 according to the second embodiment.
The paper diaper 100 shown in FIG. 4 is different from the paper diaper 1 of the first embodiment in the leg-surrounding sheet 106. Therefore, in describing the second embodiment, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 4, the leg-surrounding sheet 106 constituting the disposable diaper 100 is overlapped and pasted only in the vicinity of the leg-periphery opening end 8 a of the main body 5.
That is, the shape of the leg-surrounding sheet 106 is a shape in which when the leg-surrounding sheet 106 is pasted on the main body 5, the area for pasting is added to the area of the portion extending laterally in the crotch 1 C. That is, it has the minimum area required for the leg-surrounding seat.

  According to the disposable diaper 100 of the second embodiment described above, the disposable diaper 100 can be manufactured by pasting the leg-surrounding sheet 106 in the vicinity of the leg-surrounding opening end 8a of the main body 5. As a result, it is possible to realize a desired disposable diaper by sticking the leg-surrounding sheet 106 only in the vicinity of the leg-surrounding opening end portion 8a, thereby reducing the members used for the leg-surrounding sheet 106 and reducing the material cost. Can be suppressed.

It is a perspective view of the disposable pants type paper diaper of Embodiment 1 to which the disposable pants type paper diaper of the present invention is applied. FIG. 2 is a development view of the disposable pants-type paper diaper of FIG. FIG. 2 is an exploded perspective view for explaining the disposable pants-type paper diaper of FIG. It is a disassembled perspective view of the disposable pants type paper diaper of Embodiment 2 to which the disposable pants type paper diaper of the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100 Disposable pants type disposable diaper 1A Abdominal side part 1B Back side part 1C Crotch part 2 Inner surface sheet 3 Outer surface sheet 4 Absorbent body 5 Main body part 6, 106 Leg circumference sheet 7 Waist circumference opening part 70 Waist circumference part 8 Leg circumference opening part 8a, 8b Leg opening end 80 Leg periphery 91, 92 Elastic member 10 Leakage prevention sheet M Center line

Claims (2)

A main body comprising: an inner sheet disposed on a surface in contact with a human body; an outer sheet disposed outside the inner sheet; and an absorber disposed between the inner sheet and the outer sheet. In absorbent articles,
The leg circumference part that holds the leg circumference of the wearer at the time of wearing extends from the leg circumference opening end of the main body part to the leg circumference opening side , and the main body part has elasticity. With a stretchable leg-around sheet attached to cover the entire surface of the main body,
The shape of the leg periphery opening end of the main body is a shape that fits around the belly of the wearer when wearing,
The absorbent article is characterized in that a wearer's buttocks are covered with the main body part and the leg-surrounding sheet regardless of whether the absorbent article is worn forward or backward.   The absorbent article according to claim 1, wherein the leg-around sheet is a film-like, net-like, or knitted stretchable sheet formed of a thermoplastic elastomer.

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