JP2810501B2 - Disposable absorbent wearing article - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a disposable absorbent wearing article, and more particularly, a stretchable member provided on a waist flap constitutes a stretchable waistband and prevents body fluid leakage. The present invention relates to the wearing article having an effect on

(Prior Art) In a disposable absorbent wearing article such as a disposable diaper including incontinence and training pants, a waist band is formed by disposing an elastic elastic member such as thread rubber or urethane rubber on at least a part of a waist flap. Techniques for improving wearability are widely known. In a known liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent wearing article having an absorbent body interposed between the two sheets, the body fluid discharged in the crotch region is abdominal and dorsal. There is a problem that it penetrates and diffuses to the vicinity of the waist flap, oozes out of the top sheet from there, wets the wearable skin and gives discomfort. If the elastic expansion member can be used to prevent this seepage, it is the manufacturer,
This is beneficial for the users. JP-A-61-27
The technology disclosed in Japanese Patent No. 5402 attempts to solve this problem by integrating a wide elastic member on the inner surface of the top sheet.

(Problems to be solved by the invention) The body fluid discharged into the crotch part of the wearing article diffuses through the top sheet or the absorbent body to reach the abdominal area or the dorsal area, where the body fluid oozes out of the article and becomes improper for the wearer. Pleasure is as described above. On the other hand, the technology disclosed in Japanese Patent Application Laid-Open No. 61-275402 cannot eliminate the discomfort caused by the bodily fluid that diffuses the top sheet and seeps in the area.

Accordingly, the present invention seeks to overcome the above-mentioned problems by proposing an elastic waistband that can prevent oozing of bodily fluids in the abdominal and / or dorsal areas of the wearing article.

(Means for Solving the Problems) The present invention for solving the above problems includes a liquid permeable top sheet, a liquid impermeable back sheet, an absorber interposed between the two sheets, Improvement of a disposable absorbent article including an abdominal and back waist flap composed of the top sheet and the back sheet extending outward from the opposite edge, and a stretchable waist band provided on at least one of the waist flaps. Related to

The present invention provides the article, wherein the elastic waistband includes a liquid-impermeable band-like elastic member extending in a width direction of the article, and an outer edge extending in the longitudinal direction of the elastic member has at least the same. While keeping a part stretchable in the width direction of the article, it is joined to the top sheet of the waist flap, and an inner edge extending in the longitudinal direction of the elastic member is an end of the absorber facing the waist flap. A point that is joined to the top sheet at a position near the center of the article over the edge, and a side flap having extensibility in at least the width direction of the article is located outside the opposite side edge of the absorber, The belt-shaped elastic member is joined to the side flap.

(Example) An example of the present invention is described below with reference to the drawings.

Example 1 FIG. 1 shows a disposable diaper 1 according to an example of the present invention.
FIG. 2 is a plan view showing a part of the top sheet 2 cut away. The diaper 1 has a liquid-permeable topsheet 2 that comes into contact with the skin when worn, a liquid-impermeable backsheet 3 that does not come into contact with the skin,
An absorbent body 4 interposed between the two sheets 2 and 3 and a liquid-impermeable band-like elastic member 6 provided on a back waist flap 10 to be described later. And a fastener tape 7 for fastening the back waist flap to the back side.

The diaper 1 has a crotch section 50, a ventral section 51, and a dorsal section 52.

The inner surfaces of the top sheet 2 and the back sheet 3 are appropriately joined to each other except for a portion that comes into contact with the absorber 4.
The top sheet 2 and the back sheet 3 extending outward from the opposite edges 8, 8 'of the absorber 4 are joined to form an abdominal waist flap 9 and a back waist flap 10.
The top sheet 2 and the back sheet 3 extending outward from the opposing side edge 11 of the absorber 4 form a side flap 12, and an elastic member 5 for leg rotation is interposed between the two sheets in a stretchable manner. ing.

The strip-shaped elastic member 6 has both end sections 13 extending from the side flaps 12 and an intermediate section 14 located therebetween. The intermediate section 14 intermittently joins at least its central section 15 under extension to the topsheet 2 so that the section 15 is gatherable and telescopic,
The remaining portion 16 is provided with a stretchable intermittent joint or a substantially full-surface glued joint. By configuring the elastic member 6 and the diaper 1 in this manner, a waistband 17 including the elastic member 6 is formed.

FIG. 2 is an end view taken along the line II-II of FIG. 1, and shows a state in which the elastic member 6 is joined in the width direction, that is, in the longitudinal direction of the diaper 1. The outer edge 6A of the elastic member 6 is
The inner edge 6B is joined to the top sheet 2 at the waist flap 10 and the absorber 4 facing the waist flap 10
The diaper 1 is joined to the top sheet 2 at a position slightly over a center line CC (see FIG. 1) that bisects the diaper 1 in the longitudinal direction beyond the back edge 8 of the diaper 1. Since the waist band 17 is made of the relatively wide elastic member 6 as described above, when the article 1 is worn, the tightening force applied in the waist direction is widely scattered in the waist band, and the problem of turning up the waist flap 10 is solved. It is also possible to eliminate it. When the central area 15 of the inner edge 6B is intermittently joined to the top sheet 2 under extension, the top sheet 2 is prevented from freely shrinking near the absorber 4 and gathers are hardly formed near the absorber 4. Although it may not be formed, the object of the present invention can be achieved in such a case if the gathers can be formed on the waist flap 10.

1 and 2 show a state in which the diaper 1 receives tension in the longitudinal direction and the width direction and the gathers and the elastic member 5 are extended. The central area 15 of the elastic member 6 is elongated in the longitudinal direction during intermittent joining, so that a part of the outline of the inner edge 6B is arcuate. Outer edge
The arc on the side of 6A, which should be opposed, exists on the other diaper that was connected to the diaper 1 before the fusing step in the continuous production line of the diaper 1 described below.

Here, an example of a continuous production line of the diaper 1 will be additionally described. Although not shown, the diaper 1 is produced by adjusting the longitudinal direction thereof in accordance with the flow of the line. At least a pair of adjacent diapers are connected to each other at the back waist flap, and a double-width member of the band-shaped elastic member 6 is partially stretched to the connected portion, and is bonded at right angles to the flow direction. Thereafter, the width of the member is divided into two, and the member is melted using a heating blade or the like so as to form a pair of waist flaps. At the time of the bonding, the stretched portion of the member is narrowed in an opposite arc.
In this manner, two cutting edges can be formed by one fusing by using the elastic member without waste. The outer edge 6'A in FIG. 2 is one of the cut edges. As described below, the top sheet 2, the back sheet 3 and the elastic member 6 of the diaper 1 can be selected from thermoplastic plastic films and rubber sheets. Therefore, if the above-mentioned fusing is employed for cutting the outer shape of the diaper 1, the cutting edge can prevent the materials from being melted and adhered to each other, thereby preventing body fluid from leaking from the cutting edge.

The elastic member 6 may be made of an elastic material such as an elastic plastic film or a rubber sheet. However, a fiber material having elasticity is laminated on a surface which comes into contact with the wearer's skin to make the skin feel good. It is preferable to impart sweat absorption. An example of such a fiber material is a fiber entangled nonwoven fabric containing crimped synthetic fibers. In addition, it is preferable that the lamination of the fiber material to the elastic material is performed by intermittent joining or by using an elastic adhesive to minimize the decrease in elasticity due to the lamination.

As other materials constituting the diaper 1 of the present embodiment, the top sheet 2 is a fiber entangled nonwoven fabric made of thermoplastic synthetic fiber, the back sheet 3 is a thermoplastic film such as polyethylene, the absorber 4 is pulverized pulp, and thermoplastic. A mixed compression molded product of a fiber and a water-absorbing polymer can be given as an example.

Embodiment 2 FIGS. 3 and 4 show a diaper 1 which is another embodiment of the present invention. FIG. 3 is a plan view showing the same manner as FIG. 1 of the first embodiment, and FIG. 4 is an end view taken along the line IV-IV of FIG.

In this embodiment, the diaper 1 has an elastic member 6'6 on the abdominal waist flap and the back waist flap 10, and a first side flap 19 extending outward from the opposite side edge of the absorber 4.
A second side flap 20 connected to the back sheet 3 at a side edge of the back sheet 3 and an elastic flap 25 joined to the inner surface of the back sheet 3 or the second side flap 20 are provided. Although the second side flap 20 is mainly used for decoration, it is preferable that the second side flap 20 has an extensibility or an elasticity at least in a width direction of the diaper 1 and is well fitted to a wearer of the diaper 1. A non-woven fabric can be used for this purpose, but a spun-lace non-woven fabric having high extensibility is particularly suitable.

FIG. 4 shows a state in which the elastic flap 25 is joined on the second side flap 20. The flap 25 has a sleeve-shaped flap 22 that wraps the elastic member 21 and a sleeve-shaped flap 24 that wraps the elastic member 23.
And is integrally joined to the second side flap 20, and has a V-shaped cross section in the width direction, and stands upright on the inner surface of the diaper. The tips of the raised flaps 22 and 24 contact around the legs when worn to prevent body fluid leakage. Both ends 27 in the longitudinal direction of the flap 25 are adhered to the inner surface of the diaper 1 by opening the V-shape at about 180 °. The flaps 22 and 24 have elasticity in the longitudinal direction, and can be raised from the inner surface at least at the central portion of the diaper 1 by the contracting action of the elastic members 21 and 23. Note that the hatching in FIG. 3 indicates a joining portion of the flap 25 to the second side flap 20.

Further, in FIG. 3, the elastic members 6 ', 6 on the ventral and dorsal waist flaps 9, 10 have a central area 15', 15 intermittently joined to the topsheet 2 and gathers (not shown). And the areas 15′A and 15A covering the flap 25
Are joined by intermittent or full gluing, and both end sections 13 ', 13 are joined to the second side flap 20 by substantially full gluing. The width direction of the elastic members 6 ′ and 6 is joined to the top sheet 2 in the same manner as in FIG. 2 of the first embodiment. That is, each outer edge 6′A, 6A is joined to the top sheet 2 at the waist flaps 9, 10,
The respective inner edges 6'B, 6B extend beyond the respective edges 8 ', 8 of the absorber 4 and are joined to the top sheet 2 at a position near the center line CC. As in the first embodiment, the joining of the inner edge portions 6'B and 6B is poor in elasticity.

In the diaper 1 configured as described above, even if the second side flap 20 is made of a spun-lace nonwoven fabric and the diaper 1 is provided with an extensibility in the width direction, the action of the contraction force of the elastic members 6 'and 6 can be achieved. The flap 20 does not stretch unnecessarily. The diaper 1 has elastic members 6 ', 6 on the waist flaps 9, 10.
The waistbands 17 'and 17 are formed to include elastic gathers (not shown).

(Effects of the Invention) According to the wearing article according to the present invention, at least a part of the liquid-impermeable strip-shaped elastic member is elastically joined to the top sheet of the waist flap to form a stretchable waist band on the worn article. It is formed. The elastic member covers the top sheet from the joining position on the waist flap to the joining position near the center beyond the edge of the absorber in the longitudinal direction of the wearing article. Therefore, the topsheet surface in the ventral and / or dorsal area including the waistband so covered does not seep out bodily fluids and does not cause discomfort to the wearer.

Since the article has at least the side flap which is stretchable in the width direction, the stretchable side flap and the stretchable waist flap cooperate to fit and adhere to the wearer's body, and the excrement is reduced. Leakage can be effectively prevented.

[Brief description of the drawings]

FIGS. 1 and 2 are a plan view showing an inner surface of a diaper according to an embodiment of the present invention, with a part of the inner surface thereof being cut away, and FIGS.
FIGS. 3 and 4 are a plan view showing another embodiment of the present invention and an end view taken along the line IV-IV. 1 ... worn article, 2 ... top sheet, 3 ... back sheet, 4 ... absorber, 6 ... elastic member, 6A ... outer edge, 6B ... inner edge, 8, 8 '... Edge, 9 ... ventral waist flap, 10 ... dorsal waist flap, 17, 17 '
…… Waistband, 19 …… First side flap, 20…
… Second side flap

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A41B 13/00 A61F 5/44 A61F 13/00

Claims (2)

(57) [Claims] 1. A liquid-permeable topsheet, a liquid-impermeable backsheet, an absorber interposed between the two sheets, and the topsheet and the backsheet extending outward from opposite edges of the absorber. An abdominal and back waist flap comprising: and a stretchable waistband provided on at least one of the waist flaps, wherein the stretchable waistband extends in a width direction of the article. An outer edge extending in the longitudinal direction of the elastic member is joined to the top sheet of the waist flap while keeping at least a part of the outer edge stretchable in the width direction of the article. And, the inner edge portion extending in the longitudinal direction of the elastic member, at the position near the center of the article over the edge of the absorber facing the waist flap It is joined to the top sheet, and a side flap having extensibility in at least the width direction of the article is located outside the opposed side edge of the absorber, and the band-shaped elastic member is joined to the side flap. The said wearing article characterized by the above-mentioned. 2. A first site flap extending outward from an opposing side edge of the absorber, the first side flap comprising:
2. The strip-shaped elastic member is joined to the second side flap, which is adjacent to the side flap and extends to the outside thereof and has a considerable elasticity at least in the width direction of the article. Wearing goods.