JP4789793B2 - Absorbent articles - Google Patents

Absorbent articles Download PDF

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JP4789793B2
JP4789793B2 JP2006343303A JP2006343303A JP4789793B2 JP 4789793 B2 JP4789793 B2 JP 4789793B2 JP 2006343303 A JP2006343303 A JP 2006343303A JP 2006343303 A JP2006343303 A JP 2006343303A JP 4789793 B2 JP4789793 B2 JP 4789793B2
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portion
side
nonwoven fabric
absorbent article
leak
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JP2008154606A (en
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英和 伊藤
綾子 牧野
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花王株式会社
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Description

  The present invention relates to an absorbent article.

As an absorbent article such as an incontinence pad, a sanitary napkin, or a panty liner, an absorbent article that includes an absorbent layer and a leak-proof layer, is substantially vertically long, and has side leak-proof portions formed on both sides in the longitudinal direction. It has been known.
The side leak-proof portion in this type of absorbent article prevents liquid such as urine and menstrual blood supplied to the skin contact surface from leaking sideways.
For example, in Patent Document 1, a back sheet constituting a leak-proof layer is extended outward from both side edge portions of an absorber constituting a part of the absorbent layer, and an elastic member is provided near the tip of the extended portion. An absorbent article having a side leak-proof portion having a structure in which the extending portion of the back sheet that has been erected is covered with a sheet material having a cross-sectional loop shape is described.

Japanese National Patent Publication No. 7-501723

  However, the side leak-proof part in the absorbent article described in Patent Document 1 has an elastic member fixed to the resin film constituting the back sheet immediately below the portion of the sheet material that has a cross-sectional loop shape, and the rigidity is increased. The side leak-proof portion hits the skin while being supported by the portion from the back side, so that the side leak-proof portion may give the skin a sense of incongruity or discomfort.

  Accordingly, an object of the present invention is to provide an absorbent article in which the side leak-proof portion has a soft touch on the skin, a good wearing feeling is obtained, and is excellent in leak-proof properties.

  The present invention is an absorbent article that includes an absorbent layer and a leak-proof layer, is substantially vertically long, and has an internal hollow side leak-proof portion formed on both side portions in the longitudinal direction. Consists of a laminated two-layer nonwoven fabric and a plurality of or strip-like elastic members fixed between the two layers of the nonwoven fabric, and the two-layer nonwoven fabric is folded so that a hollow portion is formed inside the folding direction. The object is achieved by providing an absorbent article that is fixed.

  In the absorbent article of the present invention, the side leak-proof portion has a soft touch on the skin, a good wearing feeling is obtained, and is excellent in leak-proof properties.

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
As shown in FIGS. 1 and 2, an incontinence pad 1, which is an embodiment of the absorbent article of the present invention, includes a liquid-retaining absorbent layer 2 and a liquid-impermeable or liquid-impermeable leak-proof layer 3. It is provided with a pair of side leak-proof portions 4 and 4 which are substantially vertically long and hollow inside and are formed on both side portions in the longitudinal direction.

As shown in FIG. 2, the absorbent layer 2 includes a liquid-permeable top sheet 21 and a liquid-retaining absorbent 22, and the leak-proof layer 3 is a liquid-impermeable or liquid-permeable back sheet 31. Consists of. The absorber 22 is sandwiched and fixed between the top sheet 21 and the back sheet 31.
The absorbent body 22 has an elliptical plan view shape in which the central portion in the longitudinal direction is constricted, and both side edges 23 and 23 of the absorbent body 22 in the longitudinal central portion 11 of the incontinence pad 1 are respectively outside in the width direction. Concave arc shape toward the direction.

Each of the top sheet 21 and the back sheet 31 has a rectangular shape in which both end portions in the longitudinal direction are arcuate. The top sheet 21 and the back sheet 31 respectively extend outward from both side edges of the absorbent body 22 in the longitudinal center portion 11 of the incontinence pad 1, and are joined to each other at the extended portions. Each of the front portion 12 and the rear portion 13 in the longitudinal direction has substantially the same width as the wide portion of the absorber 22. Each of the top sheet 21 and the back sheet 31 has portions extending from both ends in the longitudinal direction of the absorbent body 22 at both ends in the longitudinal direction of the incontinence pad 1. 14 and 15 are formed. The end seal parts 14 and 15 are formed by hot embossing.
The top sheet 21, the absorber 22 and the back sheet 31 are integrated to form the absorbent main body 5.

As shown in FIG. 2, the side leak-proof portion 4 includes two layers of laminated nonwoven fabrics 41 and 42 and a plurality of thread-like elastic members 43 fixed between the two layers of the nonwoven fabrics 41 and 42.
In the present embodiment, the two layers of the nonwoven fabrics 41 and 42 are formed by folding a single nonwoven fabric into two so that a folded portion 44 is formed along the longitudinal direction of the incontinence pad 1. The other side is a non-woven fabric 41 and the other side is a non-woven fabric 42.

Then, as shown in FIG. 2, these two layers of nonwoven fabrics 41 and 42 are integrally bent and fixed so that a hollow portion 49 is formed inside the folding direction. In FIG. 2, the arrow P direction is the inside of the folding direction, and the arrow Q direction is the outside of the folding direction.
More specifically, in each of the two layers of the nonwoven fabrics 41 and 42, one end 45 in the width direction is fixed to a portion of the topsheet 21 located on the absorbent body 22 via an adhesive 47, and the other end 46 is The back sheet 31 is fixed to a portion located below the absorber 22 via an adhesive 47. One end 45 and the other end 46 of each of the two layers of nonwoven fabrics 41 and 42 extend in the same direction as the longitudinal direction of the incontinence pad 1.
In addition, the two layers of the nonwoven fabrics 41 and 42 are joined and integrated through an adhesive (not shown) applied to each elastic member 43 at the position where each elastic member 43 is disposed.

A plurality of elastic members 43 are arranged substantially in parallel with a predetermined interval in the width direction of the incontinence pad 1. The elastic member 43 is fixed between the two layers of nonwoven fabrics 41 and 42 in a state where the elastic member 43 is extended in the longitudinal direction of the incontinence pad 1.
The two layers of nonwoven fabrics 41 and 42 are joined in a state of being in direct contact with each other at the end seal portions 14 and 15, which are located at both ends in the width direction of the incontinence pad 1, and in the end seal portions 14 and 15, In the part located in the center part of the width direction of the incontinence pad 1, it joins in the state which interposed the surface sheet 21 and the back surface sheet 31 between both.

  The portions of the two-layer nonwoven fabrics 41 and 42 that are not fixed to the absorbent main body 5 between the one end 45 and the other end 46 are due to the presence of a plurality of elastic members 43 that are spaced apart in the width direction. The side leak-proof portion 4 having a hollow portion 49 inside is formed by being bent into a loop shape in cross section. In the natural state of the incontinence pad 1, the side leak-proof portion 4 protrudes toward the wearer's skin side, and a part, preferably the whole, of the portion to which the elastic member 43 is fixed is the length of the incontinence pad 1. It is located above the maximum height position LV of the absorber 22 at the same position in the direction (upward in FIG. 2, the direction approaching the wearer's skin). As shown in FIG. 2, the bending in the present invention includes a bending in which a bent portion whose cross section consists only of a curve is generated.

  When the incontinence pad 1 of the present embodiment is used (when worn), the side hollow leak-proof portions 4 and 4 have a certain width and hit the wearer's skin. It feels soft against the skin, is less likely to cause discomfort, and provides a good feeling of wearing. In addition, it is preferable that the elastic member is not arranged in the hollow part 49 formed by the two layers of nonwoven fabrics 41 and 42, and the end edge part of the absorbent main body 5 is the side leakage preventing parts 4 and 4. It is preferable not to contact the back side of the part which contacts skin.

  Further, in the two-layered nonwoven fabrics 41 and 42 of the side leak-proof portion 4, the two-layered nonwoven fabrics 41 and 42 and the elastic member 43 are integrated to fix the elastic member 43 at the portion where the elastic member 43 is arranged. However, in the portion where the elastic member 43 is not disposed (except for the joint portion with the absorbent article main body), the two-layer nonwoven fabrics 41 and 42 are not joined. It is preferable from the viewpoint of further improving the flexibility.

Further, due to the presence of the side leakage preventing portions 4, 4, the liquid is less likely to leak outward in the width direction of the incontinence pad 1, and the leakage preventing property is excellent.
Further, the incontinence pad 1 of the present embodiment can be particularly preferably used as the male incontinence pad 1. For example, as shown in FIG. 3, it is preferable to use the incontinence pad so as to cover the penis 61. . In this case, since the left and right side leak-proof portions 4 and 4 are positioned on both sides of the penis 61 to stabilize the position of the penis 61, the penis 61 is detached from the incontinence pad 1 to the left and right, and leakage occurs. Can be prevented.

  As described above, the incontinence pad 1 of the present embodiment is a circle in which the side edges 23 and 23 of the absorbent body 22 in the longitudinal center portion 11 of the incontinence pad 1 are concave outward in the width direction of the incontinence pad 1. It has an arc shape. Further, grooves 24 and 24 having shapes along the respective side edges are provided at positions spaced inward in the width direction from the respective arc-shaped side edges 23 and 23. As shown in FIG. 2, the grooves 24, 24 in the present embodiment are formed by integrally heating and compressing the topsheet 21 and the absorber 22 by hot embossing, and the plane of the incontinence pad 1. In the visual shape, similarly to the side edge portions 23, 23, a concave arc shape is formed outward in the width direction of the incontinence pad 1.

The distance L1 (see FIG. 1 (a)) between the side edges 23 and the groove 24 having an arc shape is preferably 5 to 20 mm, more preferably 7 to 15 mm. The distance L1 between the side edge portions 23 and the groove 24 is preferably uniform over the longitudinal direction of the groove 24 or gradually decreases from the vicinity of the central portion in the longitudinal direction toward the front and rear.
The minimum interval between the grooves 24 and 24 is preferably 15 to 50 mm, more preferably 20 to 40 mm, and the maximum interval at both ends in the longitudinal direction of the grooves 24 and 24 is preferably 30 to 60 mm, and preferably 35 to 50 mm. Is more preferable. The interval between the grooves 24 and 24 is measured on the inner side, and the width of the groove is 1 to 5 mm.

Since the grooves 24 and 24 are formed in an arc shape so as to substantially match the constricted shape formed on both side edges 23 and 23 of the absorbent body 22, when the incontinence pad 1 is used, As shown in FIG. 2, the portion located on the outer side in the width direction from the groove 24 rises at an angle with respect to the portion located on the inner side from the grooves 24 and 24. Therefore, the height difference between the height of the skin contact surface in the center portion in the width direction of the incontinence pad 1 and the highest height position of the side leakage preventing portions 4, 4 becomes large, and the apparent leakage of the side leakage preventing portions 4, 4 is increased. The amount of protrusion increases, and the fit to the wearer's skin, particularly the buttocks, is improved. Furthermore, it has the effect of preventing leakage of the absorber narrowed by the constricted shape.
In addition, the retainability of the penis 61 when used as the male incontinence pad 1 is also improved in the manner shown in FIG.

The incontinence pad 1 has a pressure-sensitive adhesive portion 7 for fixing to a garment on the surface of the leak-proof layer 3 side in the thickness direction, specifically, on one side of the back sheet 31.
As shown in FIG. 1 (b), the adhesive portion 7 is formed between the left and right grooves 24, 24 in the portion 24A having the grooves 24, 24 in the longitudinal direction of the incontinence pad 1, and the grooves 24, 24 respectively. Is not formed outside.
Since the adhesive portion 7 is not formed outside the groove 24, the portion of the incontinence pad 1 that is located outside the groove 24 is separated from the clothing 8 and easily rises in a direction approaching the wearer's body. This further improves the fit of the side leak-proof portions 4 and 4 to the wearer's skin, particularly the buttocks, and the penis when used as a male incontinence pad 1 in the manner shown in FIG. The retainability of 61 is further improved.

As a nonwoven fabric which comprises said nonwoven fabric 41,42, various well-known nonwoven fabrics can be especially used without a restriction | limiting. Although a hydrophilic nonwoven fabric can be used as the nonwoven fabrics 41 and 42, one of the at least two layers of nonwoven fabrics 41 and 42 is preferably a water-repellent nonwoven fabric. In particular, when the nonwoven fabric 41 is hydrophilic, the mucilage can be received by the hydrophilic nonwoven fabric once and the water repellency effect of the nonwoven fabric 42 can be sufficiently exhibited.
Moreover, it is preferable that the end part 46 of the width direction is fixed to the leak-proof layer 3, more specifically, the back surface sheet 31 etc. which comprise the leak-proof layer 3 of the water-repellent nonwoven fabric. By using a water-repellent nonwoven fabric, the leak-proof property is further improved, and by being fixed to the leak-proof layer 3 such as the back sheet 31, the liquid absorbed by the absorber 22 or unintentionally The liquid that has entered the hollow portion 49 can be effectively prevented from leaking out of the incontinence pad 1.

As the nonwoven fabric constituting the nonwoven fabrics 41 and 42, a spunlace nonwoven fabric which is a nonwoven fabric obtained by entanglement of the constituent fibers of the fiber web by high-pressure water flow treatment, obtained by heat-sealing the constituent fibers of the fiber web by hot air treatment Examples thereof include an air-through non-woven fabric that is a non-woven fabric, and a resin-bonded non-woven fabric that is a non-woven fabric obtained by bonding the constituent fibers of a fiber web with an adhesive. The fiber web used for manufacturing these nonwoven fabrics can be manufactured by a card machine or an airlaid method in which fibers are stacked in air. A spunbond nonwoven fabric, a heat bond nonwoven fabric, a melt blown nonwoven fabric, or the like can also be used. Furthermore, a composite nonwoven fabric having a multilayer structure such as spunbond / meltblown / spunbond can be used. As the non-woven fabric having a multilayer structure, SM (spunbond / meltblown), SMS (spunbond / meltblown / spunbond) non-woven fabric and the like can also be used.
Among these non-woven fabrics, an air-through non-woven fabric is preferable from the viewpoint that the touch can be improved, and a composite non-woven fabric having a multilayer structure such as meltblown / spunbond is preferable from the viewpoint of leakage prevention.

  As the fibers constituting the water-repellent nonwoven fabric, various synthetic resins conventionally used for the production of nonwoven fabrics can be preferably used. For example, polyolefin resins such as polyethylene and polypropylene, and polyester resins such as polyethylene terephthalate. Examples thereof include fibers made of polyamide resin such as nylon (registered trademark), and composite fibers such as a core-sheath type and a side-by-side type made of two or more kinds of resins. These fibers can be used alone or in combination of two or more.

  Moreover, it is preferable that the nonwoven fabrics 41 and 42 have air permeability from the viewpoint of ensuring air permeability in the side leak-proof portion 4 and preventing swelling and the like. When the nonwoven fabrics 41 and 42 are made to be air permeable, in the incontinence pad 1 of the present embodiment, the side leak-proof portion 4 may be crushed by pressing force or recovered after being pressed during use (wearing). Since the side leak-proofing part 4 draws air in and out like a pump, the air permeability is further improved and the anti-dampness is excellent.

The incontinence pad 1 of the present embodiment is placed on the packaging material 9 in the same manner as a normal incontinence pad or sanitary napkin, and is commercially available in a state of being folded and packaged with the packaging material 9 in the longitudinal direction. . In this case, the incontinence pad 1 is preferably folded in a three-fold or four-fold state, but the folding curves B1 and B2 generated by the folding remain in the incontinence pad 1 as folded gussets.
As shown in FIG. 1A, the incontinence pad 1 of the present embodiment has folding lines B1 and B2 that remain as folding lines, and one of the folding lines B1 and the one closer to the folding line B1. The adhesive portion 7 is not formed in the region 17 between the one end portion 16 in the longitudinal direction.

  The folding line B1 remains as a folded gusset such that the skin contact surface side is a valley, and the adhesive portion 7 is not formed in the region 17, so that it is for men in a mode as shown in FIG. When used as the incontinence pad 1, the portion behind the folding line B <b> 1 is separated from the clothing 8 and easily stands in the direction toward the wearer's body. Thereby, as shown in FIG. 3, it becomes easy to maintain the state where the tip of the penis 61 and / or the lower end of the testicle 62 are bent so as to wrap, and urine leakage is more effectively prevented.

The material for forming the incontinence pad 1 will be described. As the top sheet 21, the back sheet 31, and the absorber 22, those conventionally used for absorbent articles such as incontinence pads, sanitary napkins, and disposable diapers are used without particular limitation. be able to.
For example, the top sheet 21 can be a nonwoven fabric, an apertured film, or a laminate thereof, and the back sheet 31 can be a resin film, a laminate of a resin film and a nonwoven fabric, or the like. As the resin film, a moisture permeable film can be used. As the absorbent body 22, a fiber assembly made of a fiber material such as pulp fiber, or a structure in which a superabsorbent polymer is held thereon and coated with tissue paper can be used.
Examples of the material of the elastic member 43 include synthetic rubber, natural rubber, spandex, and the like. The elastic member 43 has a thread-like shape (thread rubber), a narrow band-like shape (flat rubber, etc.), A film-like thing etc. can be used.

  As described above, when the incontinence pad (absorbent article) 1 of the present embodiment is folded in the longitudinal direction and individually wrapped, folds are formed by packaging, but the grooves 24 and 24 are formed. However, since it does not extend to the folding position by the packaging structure (the positions of the folding lines B1 and B2), wrinkles are not generated at the site where the groove is formed, and it does not diffuse on the surface along the wrinkles. Easy to prevent.

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment, It can change suitably.
For example, the absorbent article of the present invention is used for men's incontinence pads, particularly for men used on the penis so that the side leak-proof portions 4 and 4 are located on both sides of the penis as shown in FIG. However, it may be used as a unisex incontinence pad, a female incontinence pad, a sanitary napkin, or the like.
Further, the two layers of nonwoven fabrics 41 and 42 constituting the side leak-proof portion 4 may be a laminate of two separate nonwoven fabrics. The two layers of the nonwoven fabrics 41 and 42 may be laminated with another nonwoven fabric on the nonwoven fabric 41 side or the nonwoven fabric 42 side.

  Moreover, the fixing location of the both ends 45 and 46 of the width direction of the two-layer nonwoven fabric 41 and 42 is replaced with fixing one end 45 to the topsheet 21 and fixing the other end 46 to the backsheet 31, Both ends may be fixed to the top sheet 21, or both ends may be fixed to the back sheet 31. Moreover, the part extended from the side edge part of the absorber 22 may be sufficient as the fixing position when fixing to the surface sheet 21, and the fixing position when fixing to the surface sheet 31, respectively.

Moreover, the adhesion part 7 may arrange | position many strip | belt-shaped adhesion parts extended in the width direction of an absorbent article in series in the longitudinal direction of an absorbent article.
Further, the elastic member 43 disposed in the side leak-proof portion 4 may be a belt-like elastic member having the same width as that of the plurality of thread-like elastic members. When arranging a plurality of elastic members, the number of the elastic members can be 2 to 10, for example, and 3 to 4 is preferable. The distance between the outer end of the elastic member at one end and the outer end of the elastic member at the other end in the direction orthogonal to the elastic member and the belt-like elastic member are arranged in the case where the elastic member is arranged in a plurality of elastic members. In this case, the width of the belt-like elastic member is preferably 4 to 20 mm, particularly 8 to 12 mm.

It is a figure which shows the incontinence pad as one Embodiment of the absorbent article of this invention, Fig.1 (a) is the top view seen from the absorption layer side, FIG.1 (b) is the plane seen from the leak-proof layer side FIG. It is the II-II sectional view taken on the line in the use condition of the incontinence pad of FIG. It is a longitudinal cross-sectional view which passes along the vertical direction center line in the use condition of the incontinence pad of FIG.

Explanation of symbols

1 Incontinence pad (absorbent article)
2 Absorbing Layer 21 Top Sheet 22 Absorber 23 Both Side Edges of Absorber 24 Groove 3 Leak-Proof Layer 31 Back Sheet 4 Side Leak-Proof Part 41, 42 Nonwoven Fabric 43 Elastic Member 49 Hollow Part 5 Absorbent Body 7 Adhesive Part

Claims (4)

  1. An absorbent article that includes an absorbent layer and a leak-proof layer, is substantially vertically long, and has internal hollow side leak-proof portions formed on both sides in the longitudinal direction,
    The side leakage preventing portion is composed of a laminated two-layer nonwoven fabric and a plurality of or strip-shaped elastic members fixed between the two layers of the nonwoven fabric, and the two-layer nonwoven fabric has a hollow portion on the inner side in the folding direction. It is fixed bent as occurs,
    The absorbent layer has a liquid-permeable surface sheet and a liquid-retaining absorber,
    The absorbent body has a portion in which both side edges form a concave arc shape toward the outer side in the width direction, and the both side edge portions are spaced apart inward in the width direction from the both side edges of the arc shape. It has a groove shaped along each,
    Each of the two layers of nonwoven fabric has one end in the width direction fixed to the portion of the topsheet located on the absorber via an adhesive, and the other end of the absorber in the leak-proof layer. An adhesive that is fixed to a lower portion via an adhesive, and the elastic member is disposed only in an intermediate portion between the one end and the other end, and is applied to the elastic member The two layers of nonwoven fabric are integrated via
    The non-woven fabrics of the two layers are between the one end fixed to the top sheet and the other end fixed to the back sheet, except for the intermediate portion where the elastic member is disposed. Absorbent article that is not bonded .
  2. In the portion having the groove in the longitudinal direction of the absorbent article, the adhesive portion is formed between the left and right grooves on the surface of the leak-proof layer side, and has an adhesive portion for fixing to clothing. The absorbent article according to claim 1 , wherein the absorbent article is not formed outside each of the grooves.
  3. The absorbent article according to claim 1 or 2 , wherein at least one of the two layers of the nonwoven fabric is water-repellent, and one end portion of the water-repellent nonwoven fabric is fixed to the leak-proof layer.
  4. An area between the folding line generated by folding and one end in the longitudinal direction closer to the folding line of the absorbent article, which is placed on the packaging material and folded in the longitudinal direction together with the packaging material. , the adhesive portion is not formed for fixing to the garment, the absorbent article of any one of claims 1-3.
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JP3535984B2 (en) * 1999-04-02 2004-06-07 ユニ・チャーム株式会社 Wearing article
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CN104096258A (en) * 2014-06-17 2014-10-15 马鞍山同杰良生物材料有限公司 Anti-side leakage degradable polylactic acid sanitary napkin and preparation method thereof
CN104096258B (en) * 2014-06-17 2015-12-09 马鞍山同杰良生物材料有限公司 Degradable polylactic acid and a preparation method of the sanitary napkin to prevent side leakage
CN105380753A (en) * 2015-12-18 2016-03-09 佛山市格菲林卫材科技有限公司 Water-absorbing hygienic material

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