JP7087239B2 - Absorbent pad to prevent loose stool leakage - Google Patents

Description

The present invention relates to a low-cost absorbent pad for preventing loose stool leakage, which can appropriately prevent leakage of loose stool.

In general, adult disposable diapers include tape-stop type, pants type, etc., and these disposable diapers are appropriately selected and used according to the need for long-term care in excretion of the user. These absorbent articles are composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between the two sheets. By adopting such a configuration, body fluids such as urine permeate through the top sheet of the absorbent article and are absorbed by the absorber, and are prevented from leaking to the outside by the back sheet.

By the way, tape-stop type and pants-type disposable diapers (hereinafter referred to as paper diapers) may be used alone or in combination with a urine absorbing pad, but at present, they are used together with a urine absorbing pad. In most cases, the urine absorbing pad is used in combination and is layered on the top sheet of a disposable diaper. This is because the cost per disposable diaper is high. By absorbing and holding excrement with a urine absorbing pad, which is cheaper than a disposable diaper, and then replacing only the urine absorbing pad, even after excretion, This is because it is not necessary to replace the more expensive disposable diapers and the absorbent goods can be used at a low cost economically.

Here, the urine collecting pad has various sizes and shapes depending on the amount of urine, and can surely absorb the excreted urine and prevent leakage. However, for loose stools, watery stools, and diarrheal stools (hereinafter referred to as loose stools), the absorption is insufficient and the loose stools may leak to the outside of the urine absorbing pad and the disposable diaper. Absorbent articles aimed at preventing are being studied.

As an absorbent article for the purpose of preventing leakage of loose stool, for example, in Patent Document 1, a through hole penetrating from the top sheet to the absorber in the thickness direction is formed, and the absorber and the back sheet are formed. Has a diffusion layer made of a non-woven fabric or a foam and having an uneven structure formed on the body side, the diffusion layer forming the bottom of the through hole, and the bottom being exposed on the body side. Absorbent articles are disclosed.

Further, in Patent Document 2, at least in the range posterior to the front end of the crotch portion, a cup portion recessed in a cup shape when viewed from the surface side is provided in a portion extending laterally from the protruding portion of the three-dimensional gather. A pad-type disposable diaper, characterized in that it is provided, is disclosed.

Further, in Patent Document 3, a stool receiving lower sheet and a stool receiving sheet are further provided on the upper surface of the top sheet in order from the top sheet side, and the loose stool permeation speed V ₂ of the stool receiving lower sheet is the loose stool permeation speed V of the stool receiving sheet. Absorbent articles larger than ₁ are disclosed.

Further, in Patent Document 4, in a disposable absorbent article provided with a stool pocket for storing and holding excrement in the buttocks contact portion, the opening portion of the stool pocket is covered with a mesh sheet, and the mesh sheet is used. Disclosed is an absorbent article characterized in that at least an intermediate region including a urination portion is surface-treated by applying a hydrophilic agent.

Japanese Unexamined Patent Publication No. 2016-11232 Japanese Unexamined Patent Publication No. 2014-45980 Japanese Unexamined Patent Publication No. 2009-22460 Japanese Unexamined Patent Publication No. 2007-90056

However, even in the absorbent articles described in Patent Documents 1 to 4, when a large amount of loose stool is excreted, the loose stool may leak, and the leakage of the loose stool cannot be sufficiently suppressed. Further, the absorbent articles described in Patent Document 1, Patent Document 3, and Patent Document 4 are premised on the improvement of the disposable diaper itself, and after loose stool is excreted, it is necessary to replace the expensive disposable diaper each time, which is costly. I was not completely satisfied with the situation. Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a low-cost absorbent pad for preventing loose stool leakage, which can appropriately prevent leakage of loose stool.

The inventor of the present invention has conducted diligent research in view of the above problems. As a result, in the absorbent pad for preventing loose stool leakage having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet, the top sheet. It has been found that the above-mentioned problems can be solved by providing a predetermined first auxiliary absorber and a second auxiliary absorber on the body side surface of the above-mentioned body, and the present invention has been completed. Specifically, the present invention provides the following.

(1) A first aspect of the present invention is a loose stool leak having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet. The preventive absorbent pad, the loose stool leak-preventing absorbent pad, has a columnar first auxiliary absorber at both ends in the width direction along the longitudinal direction on the body-side surface of the top sheet. A second auxiliary absorber having a columnar shape having a linear shape, an arc shape, or a broken line shape is provided on the front side and / or the rear side of the first auxiliary absorber. The first auxiliary absorber and the second auxiliary absorber have an absorption layer and a liquid-permeable surface material that covers the absorption layer, and the first auxiliary absorber and the second auxiliary absorber. The shape of the cross section of the auxiliary absorber is substantially rectangular or substantially circular, and the outer circumference of the cross section of the first auxiliary absorber and the second auxiliary absorber is 60 mm or more and 140 mm or less, and the first auxiliary absorber is used. The absorber and the second auxiliary absorber are absorbent pads for preventing loose stool leakage, which are fixed to the top sheet.

(2) The second aspect of the present invention is the absorbent pad for preventing loose stool leakage according to (1), which has a longitudinal dimension of 200 mm or more and 1000 mm or less and a width dimension of 50 mm or more and 500 mm or less. It is characterized by being.

(3) The third aspect of the present invention is the absorbent pad for preventing loose stool leakage according to (1) or (2), wherein the dimension of the absorber in the longitudinal direction is 150 mm or more and 950 mm or less. It is characterized in that the dimension in the width direction is 30 mm or more and 480 mm or less.

(4) The fourth aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (3), wherein the dimension of the first auxiliary absorber in the longitudinal direction is It is characterized in that it is 100 mm or more and is not more than the dimension in the longitudinal direction of the absorber.

(5) A fifth aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (4), wherein the absorbent pad for preventing loose stool leakage is both ends in the width direction. The first auxiliary absorber is located within 100 mm from each end of the absorber in the width direction in a plan view, and is a fixing portion of the three-dimensional gather with the top sheet. It is characterized in that it is located inside in the width direction.

(6) A sixth aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (5), which is one end in the width direction of the second auxiliary absorber. Therefore, when the width parallel line is connected to the width point where the other end of the second auxiliary absorber is located, the dimension of the width parallel line between the two points is 30 mm or more. The absorbent pad for preventing loose stool leakage according to any one of claims 1 to 5, which is equal to or smaller than the widthwise dimension of the absorber.

(7) A seventh aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (6), wherein the second auxiliary absorber is the second auxiliary. It is characterized in that it is located within 100 mm from the longitudinal end of the absorber on the side where the absorber is arranged.

(8) An eighth aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (7), wherein the first auxiliary absorber and the second auxiliary absorption are provided. The body is such that the longitudinal ends of the second auxiliary absorber at both ends in the width direction are separated from the longitudinal ends of each of the first auxiliary absorbers substantially parallel to each other in the longitudinal direction. It is arranged and is characterized in that the separation distance is 1/10 or less with respect to the dimension in the longitudinal direction of the absorber.

(9) A ninth aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (7), wherein the first auxiliary absorber and the second auxiliary absorption are provided. The body is characterized in that the longitudinal ends of the second auxiliary absorber at both ends in the width direction are joined to the longitudinal ends of each of the first auxiliary absorbers. Is to be.

(10) A tenth aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (9), wherein the surface material is a hydrophilic thermal bonded nonwoven fabric or a hydrophilic span. It is characterized by being a bonded non-woven fabric.

(11) The eleventh aspect of the present invention is the absorbent pad for preventing loose stool leakage according to any one of (1) to (10), wherein the absorbent layer is made of absorbent fiber and absorbent fiber. It is characterized by being formed of either a mixture of absorbent polymers or a laminate of hydrophilic non-woven fabrics.

The absorbent pad for preventing loose stool leakage of the present invention can be used by stacking it on the top sheet of a disposable diaper like a urine absorbing pad, and after excretion of loose stool, only the absorbent pad for preventing loose stool leakage of the present invention is used. Can be replaced, so cost reduction can be realized. Further, the loose stool leak absorbing pad of the present invention is provided with one columnar auxiliary absorber along the longitudinal direction at both ends in the width direction on the body side surface of the top sheet, and further, for preventing loose stool leakage. The absorbent auxiliary pad has a second auxiliary absorber having either a linear shape, an arc shape, or a broken line shape on the front side and / or the rear side in the longitudinal direction of the first auxiliary absorber. Therefore, when the loose stool is excreted, the first auxiliary absorber and the second auxiliary absorber block the loose stool and absorb the loose stool, so that the leakage of the loose stool can be effectively prevented. Therefore, according to the present invention, leakage of loose stool can be appropriately prevented and cost reduction can be realized.

It is a top view of the absorbent pad for preventing loose stool leakage of this invention. It is a cross-sectional view of X ₁ -X ₁ of FIG. It is a top view of the loose stool leakage absorption pad of this invention.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. The same elements are designated by the same reference numerals throughout the description of the embodiments of the present invention.

In the description of the present specification, the time when the absorbent pad 1 for preventing loose stool leakage is worn means at least one of the time when the absorbent pad 1 for preventing loose stool leakage is attached and after the attachment. The longitudinal direction of the absorbent pad 1 for preventing loose stool leakage is a direction extending to the front and back of the wearer when worn, and is a direction represented by Y in the figure. On the other hand, the width direction of the absorbent pad 1 for preventing loose stool leakage is a direction laterally or orthogonal to the longitudinal direction, and is a direction represented by X in the figure. Further, the front side refers to the direction in which the absorbent pad 1 for preventing loose stool leakage is arranged on the ventral side of the wearer when worn, and is the direction represented by F in the figure, and the rear side is the front side. Is the opposite direction, which is the direction represented by B in the figure. Further, the body-side surface is the surface of the front and back surfaces of each member such as the absorber 30 that is arranged on the wearer's skin side when worn, and the clothing-side surface is the surface of each member such as the absorber 30. Of the front and back sides, this is the side that faces the wearer's skin side when worn.

<Absorptive pad to prevent loose stool leakage>
1 and 3 are plan views of the absorbent pad 1 for preventing loose stool leakage of the present invention, and FIG. 2 is a cross _- sectional view taken along the line X1 _- X1 of FIG. As shown in FIGS. 1 to 3, the absorbent pad 1 for preventing loose stool leakage of the present invention comprises a liquid-permeable top sheet 20, a liquid-impermeable back sheet 40, and a top sheet 20 and a back sheet 40. It has an absorber 30 arranged between them, and further, on the body side surface of the top sheet 20, one columnar first auxiliary absorber 50 is provided along the longitudinal direction at both ends in the width direction. Further, on the front side and / or the rear side in the longitudinal direction of the first auxiliary absorber 50, a columnar second auxiliary absorber 60 having any shape of a linear shape, an arc shape, or a broken line shape is provided. Have. Since the absorbent pad 1 for preventing loose stool leakage of the present invention can be used by stacking it on the top sheet of an absorbent article such as a disposable diaper as an outer, like a urine absorbing pad, it is possible to realize cost reduction. can. In addition, in order to fully exert the functions of the first auxiliary absorber 50 and the second auxiliary absorber 60 as the embankment to block loose stool, the first auxiliary absorber 50 and the second auxiliary absorber 50 in the buttocks. It is preferable to arrange the first auxiliary absorber 50 and the second auxiliary absorber 60 along the circumference of the buttocks so as not to crush the height direction of the 60.

The shape of the absorbent pad 1 for preventing loose stool leakage is not particularly limited, but is preferably a substantially rectangular shape as shown in FIG. 1 like a general urine collecting pad. The lengthwise dimension of the absorbent pad 1 for preventing loose stool leakage is preferably 200 mm or more and 1000 mm or less, and the widthwise dimension is preferably 50 mm or more and 500 mm or less. By setting the dimensions of the absorbent pad 1 for preventing loose stool leakage in the longitudinal direction and the width direction in such a range, the aspect of the absorbent article to be worn when used in combination with the absorbent article such as a disposable diaper as an outer. It is possible to provide an absorbent pad 1 for preventing loose stool leakage, which can appropriately prevent leakage of loose stools according to the size and shape.

[Top sheet]
The top sheet 20 promptly allows loose stool (mainly water contained in the loose stool) to pass toward the absorber 30, and is arranged so as to face the back sheet 40 with the absorber 30 interposed therebetween. Since the top sheet 20 is a sheet that comes into contact with the skin, it has a soft feel and has the property of not irritating the skin. It is formed from the foam film of No. 1 or a composite sheet in which these are laminated. The top sheet 20 may be a single layer or a plurality of layers may be laminated, and a large number of through holes may be formed in order to impart dry touch.

As the hydrophilic non-woven fabric having the above-mentioned properties, synthetic fibers such as polypropylene and polyethylene, recycled fibers such as rayon, and natural fibers such as cotton are used in addition to the thermal bond method, the spunlace method and the span. Those obtained by a known processing method such as a bond method can be used.

The basis weight of the top sheet 20 is preferably 15 g / m ^{2 or more and 200 g / m 2 or} less from the viewpoint of workability and strength. Lotions, antioxidants, anti-inflammatory components, pH regulators, antibacterial agents, moisturizers and the like may be applied to the top sheet 20 in order to reduce irritation to the skin.

[Backsheet]
A sheet material that is liquid impermeable and has water impermeability is used for the back sheet 40, but may have moisture permeability to prevent stuffiness. Examples of the material of the back sheet 40 having such characteristics include a thin plastic sheet such as a polyethylene sheet or a polyethylene laminated non-woven fabric. Further, the basis weight of the back sheet 40 is preferably 15 g / m ² or more and 40 g / m ² or less from the viewpoint of workability and strength.

A fixing member may be provided on the surface of the back sheet 40 on the clothing side to prevent displacement during mounting. The base material of the fixing member is not particularly limited, but is preferably a mechanical hook tape or an adhesive. Further, it may have a release sheet for protecting the fixing member.

[Absorber]
The absorber 30 includes an absorbent fiber and a super absorbent polymer (Super Absorbent).
Also referred to as Polymer and SAP). The absorbent fiber is not particularly limited as long as it is generally used for absorbent articles such as sanitary napkins, disposable diapers and urine absorbing pads. For example, fluff pulp, cotton, rayon, acetate, tissue, absorbent paper and the like can be used. Can be mentioned. Among these, it is preferable to use fluff pulp from the viewpoint of absorbability. Examples of such fluff pulp include those obtained by defibrating wood pulp, synthetic fiber, polymer fiber, non-wood pulp and the like into a cotton-like shape. The amount of absorbent fiber of the absorber 30 is preferably 100 g / m ² or more and 800 g / m ² or less in basis weight so as not to impair the absorption performance and the touch.

The highly absorbent polymer of the absorber 30 is not particularly limited as long as it can absorb body fluids and prevent backflow, and is a sodium polyacrylate-based, polyaspartate-based, (starch-acrylic acid) graft. Those formed from materials such as a copolymer, a (acrylic acid-vinyl alcohol) copolymer, a (isobutylene-maleic anhydride) copolymer and a saponified product thereof can be used. Among these, sodium polyacrylate is preferable from the viewpoint of the amount of absorption per weight. The amount of the highly absorbent polymer of the absorber 30 is preferably 50 g / m ² or more and 500 g / m ² or less in basis weight so as not to impair the absorption performance and the touch. Further, from the viewpoint of the absorption rate and the absorption amount, the weight of the highly absorbent polymer with respect to the weight of the absorber 30 is preferably 15% by mass or more and 50% by mass or less.

In the absorber 30, the morphology of the absorbent fiber and the highly absorbent polymer is formed by mixing the particles of the highly absorbent polymer in the absorbent fiber, or the particles of the highly absorbent polymer are formed between the absorbent fibers. It is preferably a fixed, highly absorbent sheet. Further, for the purpose of preventing leakage of particles of the highly absorbent polymer and stabilizing the shape of the absorber 30, it is preferable to wrap the absorber 30 in a carrier sheet. The base material of the carrier sheet may be any one having hydrophilicity, and examples thereof include hydrophilic non-woven fabrics such as tissues, absorbent papers, and air-laid non-woven fabrics. When a plurality of carrier sheets are provided, the base materials of the carrier sheets may be the same or different.

The length of the absorber 30 should be 150 mm or more and 950 mm or less, the width direction should be 30 mm or more and 480 mm or less, and the thickness should be 2 mm or more and 20 mm or less so that loose stool can be appropriately absorbed. preferable.

[First auxiliary absorber and second auxiliary absorber]
The absorbent pad 1 for preventing loose stool leakage of the present invention is provided with one columnar first auxiliary absorber 50 at both ends in the width direction on the body side surface of the top sheet 20 along the longitudinal direction. Further, on the front side and / or the rear side of the first auxiliary absorber 50, a columnar second auxiliary absorber 60 having any shape of a linear type, an arc type, or a broken line type is provided, and the second auxiliary absorber 60 is provided. The auxiliary absorber 50 of 1 and the auxiliary absorber 60 of the second have a liquid permeable surface material covering the absorption layer and the absorption layer. Therefore, when the loose stool is excreted, the first auxiliary absorber 50 and the second auxiliary absorber 60 block the loose stool and absorb the loose stool, so that the leakage of the loose stool can be effectively prevented. .. In FIG. 2, the absorption layer of the first auxiliary absorber 50 is indicated by reference numeral 51, the surface material is indicated by reference numeral 52, and the absorption layer and surface material of the second auxiliary absorber 60 are not shown. However, the same configuration as that of the first auxiliary absorber 50, and details of the absorption layer and the surface material will be described later, but the description will be made as being common to the first auxiliary absorber 50 and the second auxiliary absorber 60.

As described above, the second auxiliary absorber 60 is arranged on the body side surface of the top sheet 20 in any of the front side, the rear side, the front side and the rear side of the first auxiliary absorber 50, but loose stool. Is more likely to leak from the posterior side, so the second auxiliary absorber 60 should be placed behind the first auxiliary absorber 50, as shown in FIG. 1, or loose stool leaks more effectively. In order to prevent this, it is preferable to arrange the first auxiliary absorber 50 on the rear side and the front side as shown in FIG.

Further, the second auxiliary absorber 60 has a linear shape, an arc shape, or a polygonal line shape, but the second auxiliary absorber 60 is arranged on the front side of the first auxiliary absorber 50. The shape of the second auxiliary absorber 60 arranged on the rear side may be different. When the second auxiliary absorber 60 is arranged behind the first auxiliary absorber 50, if the second auxiliary absorber 60 has an arc shape, it has a substantially U-shaped shape. Is preferable, and when the second auxiliary absorber 60 is a polygonal line type, it is preferably substantially V-shaped. As described above, loose stool tends to leak from the rear side, so when the second auxiliary absorber 60 is arranged behind the first auxiliary absorber 50, the second auxiliary absorber 60 is used. By having a substantially U-shape or a substantially V-shape, the fit with the buttocks can be improved and the leakage of loose stool can be prevented more effectively.
On the other hand, when the second auxiliary absorber 60 is arranged on the front side of the first auxiliary absorber 50, if the second auxiliary absorber 60 has an arc shape, it has a substantially inverted U-shape. When the second auxiliary absorber 60 has a broken line shape, it is preferably substantially inverted V-shaped, but since the front side is arranged around the wearer's abdomen when worn, it is worn. As shown in FIG. 3, the linear type is preferable in order to prevent the leakage of loose stool while suppressing the feeling of strangeness at the time.

Further, in the present invention, in order to improve the fit, the cross-sectional shapes of the first auxiliary absorber 50 and the second auxiliary absorber 60 are substantially rectangular or substantially circular. Here, the "cross section" refers to a cross section in the width direction for the first auxiliary absorber 50, and when the second auxiliary absorber is a straight line or a bent line type, the extending direction of each straight line. Refers to a cross section in a direction orthogonal to the cross section. When the second auxiliary absorber has an arc shape, it refers to a cross section formed by a line forming a right angle to the tangent line to the curve forming the outside of the arc shape.

The outer circumference of the cross section of the first auxiliary absorber 50 and the second auxiliary absorber 60 is 60 mm or more and 140 mm or less. By setting the outer circumference of the cross section of the first auxiliary absorber 50 and the second auxiliary absorber 60 to the above range, loose stool can be effectively blocked and leakage of loose stool can be prevented. The outer circumference of the cross section of the first auxiliary absorber 50 and the second auxiliary absorber 60 is preferably 70 mm or more and 130 mm or less, and more preferably 80 mm or more and 120 mm or less. Further, the height of the cross section of the first auxiliary absorber 50 and the second auxiliary absorber 60 is preferably 20 mm or more and 50 mm or less, and more preferably 25 mm or more and 45 mm or less. By setting the height of the cross section of the first auxiliary absorber 50 and the second auxiliary absorber 60 within the above range, it is possible to more effectively block loose stool.

The longitudinal dimension of the first auxiliary absorber 50 is 100 mm or more and is equal to or less than the longitudinal dimension of the absorber 30 in order to effectively block the leakage of loose stool and reduce the cost. Is preferable. Further, in order to more effectively block loose stool, it is more preferably 150 mm or more and not more than the dimension in the longitudinal direction of the absorber 30.

When a parallel line in the width direction is connected from one end in the width direction of the second auxiliary absorber 60 to a point in the width direction in which the other end in the width direction of the second auxiliary absorber 60 is located, 2 It is preferable that the dimension of the parallel lines in the width direction between the points is 30 mm or more and equal to or less than the dimension in the width direction of the absorber 30. The widthwise parallel lines between the above two points are represented by arrows of reference numeral W in FIGS. 1 and 3. By setting the dimension of the parallel line in the width direction between the above two points to the above range, it is possible to effectively prevent the leakage of loose stool from the front side and / or the rear side. Further, in order to effectively prevent the leakage of loose stool from the front side and / or the rear side, the distance of the parallel lines in the width direction between the two points is set between the first auxiliary absorbers 50 located at both ends in the width direction. It is preferable that the distance is equal to or greater than that of.

Further, it is preferable that the second auxiliary absorber 60 is located within 100 mm from the longitudinal end portion of the absorber 30 on the side where the second auxiliary absorber 60 is arranged. In this case, the second auxiliary absorber 60 is arranged on the central side in the longitudinal direction from the longitudinal end portion of the absorber 30 on the side where the second auxiliary absorber 60 is arranged. By adjusting the positional relationship between the second auxiliary absorber 60 and the absorber 30 in the above range in a plan view, the defecation region can be appropriately surrounded by the region where the absorber 30 exists, and the leakage of loose stool can be prevented. Can be prevented.

Next, the positional relationship between the first auxiliary absorber 50 and the second auxiliary absorber 60 will be described. In the first auxiliary absorber 50 and the second auxiliary absorber 60, as shown in FIGS. 1 and 3, the longitudinal ends of the second auxiliary absorber 60 at both ends in the width direction are first. The auxiliary absorber 50 may be arranged so as to be substantially parallel to each other in the longitudinal direction, or may be joined to each other.

The longitudinal ends of the second auxiliary absorber 60 at both ends in the width direction are arranged so as to be substantially parallel to the longitudinal ends of each first auxiliary absorber 50 in the longitudinal direction. In some cases, the separation distance is preferably 1/10 or less, preferably 1/20 or less, with respect to the longitudinal dimension of the absorber 30 in order to prevent leakage of loose stool from the separation portion. The following is more preferable.

Further, when the longitudinal end portions of the second auxiliary absorber 60 at both ends in the width direction are joined to the longitudinal end portions of the first auxiliary absorber 50, respectively, heat is generated. It is preferable to join by sealing, ultrasonic sealing, hot melt, or the like. Further, the longitudinal end portions of the second auxiliary absorber 60 at both ends in the width direction are joined to and arranged with the longitudinal end portions of the first auxiliary absorber 50, whereby a gap is created. By eliminating it, leakage of loose stool can be prevented more effectively.

Further, since the first auxiliary absorber 50 and the second auxiliary absorber 60 are fixed to the top sheet 20, the first auxiliary absorber 50 and the second auxiliary absorber 60 may be displaced during operation. It is possible to prevent leakage of loose stool. The method of fixing the first auxiliary absorber 50 and the second auxiliary absorber 60 to the top sheet 20 is not particularly limited, and an adhesive, a hook member, or the like can be used.

(Absorption layer)
The absorbent layer constituting the first auxiliary absorber 50 and the second auxiliary absorber 60 may be a material capable of absorbing loose stool, and may be an absorbent fiber, a mixture of absorbent fibers and a highly absorbent polymer, and hydrophilic. It is preferably formed of a laminate of non-woven fabrics.

The absorbent fiber used for the absorbent layer is not particularly limited as long as it is generally used for absorbent articles such as sanitary napkins, disposable diapers and urine absorbing pads. For example, fluff pulp, cotton, rayon, acetate and tissue. , Absorbent paper and the like. Among these, it is preferable to use fluff pulp from the viewpoint of absorbability. Examples of such fluff pulp include those obtained by defibrating wood pulp, synthetic fiber, polymer fiber, non-wood pulp and the like into a cotton-like shape. The basis weight of the absorbent fiber is preferably 100 g / m ² or more and 800 g / m ² or less so as not to impair the absorption performance and the touch.

The highly absorbent polymer used for the absorption layer is not particularly limited as long as it can absorb body fluids and prevent backflow, and can be used for sodium polyacrylate, polyasparagitate, and (starch-acrylic acid) grafts. A polymer formed from a material such as a polymer, a (acrylic acid-vinyl alcohol) copolymer, a (isobutylene-maleic anhydride) copolymer, and a saponified product thereof can be used. Among these, sodium polyacrylate is preferable from the viewpoint of the amount of absorption per weight. The amount of the highly absorbent polymer in the absorbent layer is preferably 50 g / m ² or more and 500 g / m ² or less in basis weight so as not to impair the absorption performance and the touch. Further, from the viewpoint of the absorption rate and the absorption amount, the weight of the highly absorbent polymer with respect to the weight of the absorption layer is preferably 15% by mass or more and 50% by mass or less.

Further, for the purpose of preventing leakage of SAP particles and stabilizing the shape of the absorption layer, it is preferable to wrap the absorption layer 51 in a carrier sheet. The base material of the carrier sheet may be any one having hydrophilicity, and examples thereof include hydrophilic non-woven fabrics such as tissues, absorbent papers, and air-laid non-woven fabrics. When a plurality of carrier sheets are provided, the base materials of the carrier sheets may be the same or different.

Further, when the absorbent layer is a laminate of hydrophilic non-woven fabric, synthetic fibers such as polypropylene and polyethylene and regenerated fibers such as rayon that have been hydrophilized can be used as the material of the hydrophilic non-woven fabric, and are hydrophilic. As the non-woven fabric processing method, known processing methods such as a spunbond method, a spunlace method, an air rayon method, and a melt blow method can be used. Among the hydrophilic non-woven fabrics made by these materials and processing methods, the hydrophilic non-woven fabric used for the absorbent layer is a pulp-containing air-laid non-woven fabric or wood pulp without using a binder from the viewpoint of appropriate liquid permeability and absorbency. It is preferable to use a polypropylene melt blown non-woven fabric or a rayon spun lace non-woven fabric in which the above is entangled.

From the viewpoint of the absorbency of the absorbent layer, the weight of the pulp contained in the above-mentioned pulp-containing air-laid nonwoven fabric is preferably 80% or more with respect to the weight of the absorbent layer, and the above-mentioned binder is not used. The weight of the wood pulp contained in the polypropylene melt blown non-woven fabric entangled with the wood pulp is preferably 60% or more and 80% or less with respect to the weight of the absorbent layer.

(Surface material)
The surface material allows the body fluid to quickly pass toward the absorption layer and covers the end of the absorption layer. Since the surface material is a sheet that comes into contact with the skin, it has a soft feel and does not irritate the skin. , An open film such as an open polyethylene film, a foamed film such as polyethylene foam and urethane foam, or a composite sheet in which these are laminated. The surface material may be a single layer or a plurality of layers, and a large number of through holes may be formed in order to impart dry touch. The surface material used in the present invention is preferably a hydrophilic thermal bonded nonwoven fabric or a hydrophilic spunbonded nonwoven fabric suitable for heat sealing and ultrasonic sealing described later. As the material of the non-woven fabric, synthetic fibers such as polypropylene and polyethylene, recycled fibers such as rayon, and natural fibers such as cotton can be used.

It is preferable that the end portion of the surface material is closed. Due to the closed ends, for example, when the absorbent fiber used for the absorbing layer is fluff pulp, the fluff pulp leaks from the ends of the first auxiliary absorber 50 and the second auxiliary absorber 60. Can be prevented. The surface material can be closed by a known method such as heat sealing, ultrasonic sealing, or hot melt.

Further, the basis weight of the surface material is preferably 15 g / m ^{2 or more and 200 g / m 2 or} less from the viewpoint of processability and strength. Lotions, antioxidants, anti-inflammatory components, pH regulators, antibacterial agents, moisturizers and the like may be applied to the surface material in order to reduce irritation to the skin.

(Three-dimensional gather)
It is preferable that the absorbent pad 1 for preventing loose stool leakage of the present invention is provided with three-dimensional gathers 70 at both ends in the width direction. By providing the three-dimensional gathers 70 at both ends in the width direction, it is possible to effectively prevent leakage of loose stool from the width direction. As the three-dimensional gather 70, a water-repellent or liquid-impermeable sheet made of hydrophobic fibers, for example, a spunbonded nonwoven fabric, a melt-blown nonwoven fabric, or a polyethylene film can be used. Further, the basis weight of the three-dimensional gather 70 is preferably 15 g / m ^{2 or more and 100 g / m 2 or} less from the viewpoint of workability and strength.

(Expandable elastic member)
Further, it is preferable that the three-dimensional gather 70 has at least one stretchable elastic member 71 on the free end side and the base end side along the longitudinal direction. By providing the stretchable elastic member 71 along the longitudinal direction, the three-dimensional gather 70 has an upright property and can be deformed according to the wearer's body shape, and the fit is improved, so that loose stool leakage is effective. It will be possible to prevent it. As the stretchable elastic member 71, for example, a polyurethane thread, a band-shaped polyurethane film, a thread-shaped or band-shaped natural rubber, or the like is used.

When the absorbent pad 1 for preventing loose stool leakage has three-dimensional gathers 70 at both ends in the width direction, the first auxiliary absorber 50 is 100 mm from each end in the width direction of the absorber 30 in a plan view. It is preferably located within, and as shown in FIGS. 2 and 2, is preferably located inside the fixing portion 72 of the three-dimensional gather 70 with the top sheet 20 in the width direction. In this case, the first auxiliary absorber 50 is arranged on the center side in the width direction rather than each end portion in the width direction of the absorber 30 on the side where each first auxiliary absorber 50 is arranged. By setting the position of the first auxiliary absorber 50 in the above range, it is possible to effectively prevent the leakage of loose stool over a wide area.

(Manufacturing method of absorbent pad to prevent loose stool leakage)
As a method for manufacturing the absorbent pad 1 for preventing loose stool leakage, a back sheet 40, an absorber 30, and a top sheet in which the first auxiliary absorber 50 and the second auxiliary absorber 60 are previously fixed to the body side surface. 20 can be laminated in this order, and the top sheet 20 and the back sheet 40 can be manufactured by fixing them with a hot melt adhesive, heat embossing, ultrasonic embossing, high frequency embossing, or the like over a part or the entire circumference. .. If necessary, three-dimensional gathers 70 can be provided at both ends in the width direction. In this case, it is preferable that the first auxiliary absorber 50 is located inside the fixing portion 72 of the three-dimensional gather 70 with the top sheet 20 in the width direction.

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments, and various modifications or modifications to the above embodiments are made. It will be apparent to those skilled in the art that improvements can be made. It is also clear from the description of the claims that the form with such changes or improvements may be included in the technical scope of the present invention.

1 Absorbent pad for preventing loose stool leakage 20 Top sheet 30 Absorber 40 Back sheet 50 First auxiliary absorber 51 Absorption layer of first auxiliary absorber 52 Surface material of first auxiliary absorber 60 Second auxiliary absorption Body 70 Three-dimensional gather 71 Stretchable elastic member 72 Fixed part

Claims (11)

An absorbent pad for preventing loose stool leakage, comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet.
The absorbent pad for preventing loose stool leakage is provided with a columnar first auxiliary absorber at both ends in the width direction on the body side surface of the top sheet along the longitudinal direction, and further, said. It has a columnar second auxiliary absorber on the front side and the rear side of the first auxiliary absorber.
The first auxiliary absorber and the second auxiliary absorber have an absorption layer and a liquid-permeable surface material that covers the absorption layer.
The shape of the cross section of the first auxiliary absorber and the second auxiliary absorber is substantially rectangular or substantially circular.
The outer circumference of the cross section of the first auxiliary absorber and the second auxiliary absorber is 60 mm or more and 140 mm or less.
The first auxiliary absorber and the second auxiliary absorber are fixed to the top sheet, and are fixed to the top sheet .
The second auxiliary absorber on the front side has a linear shape, and the second auxiliary absorber on the rear side has an arc shape or a polygonal line shape, and has an absorbent property for preventing loose stool leakage. pad. The absorbent pad for preventing loose stool leakage according to claim 1, wherein the dimension in the longitudinal direction is 200 mm or more and 1000 mm or less, and the dimension in the width direction is 50 mm or more and 500 mm or less. The absorbent pad for preventing loose stool leakage according to claim 1 or 2, wherein the absorbent body has a longitudinal dimension of 150 mm or more and 950 mm or less and a widthwise dimension of 30 mm or more and 480 mm or less. The absorbent property for preventing loose stool leakage according to any one of claims 1 to 3, wherein the dimension of the first auxiliary absorber in the longitudinal direction is 100 mm or more and is equal to or less than the dimension in the longitudinal direction of the absorber. pad. The absorbent pad for preventing loose stool leakage has three-dimensional gathers at both ends in the width direction.
The first auxiliary absorber is located within 100 mm from each end of the absorber in the width direction in a plan view, and is located inside the fixing portion of the three-dimensional gather with the top sheet in the width direction. The absorbent pad for preventing loose stool leakage according to any one of claims 1 to 4. When a parallel line in the width direction is connected from one end in the width direction of the second auxiliary absorber to a point in the width direction in which the other end in the width direction of the second auxiliary absorber is located, 2 The absorbent pad for preventing loose stool leakage according to any one of claims 1 to 5, wherein the dimension of the parallel line in the width direction between the points is 30 mm or more and equal to or less than the dimension in the width direction of the absorber. The loose stool leakage prevention according to any one of claims 1 to 6, wherein the second auxiliary absorber is located within 100 mm from the longitudinal end of the absorber on the side where the second auxiliary absorber is arranged. Absorbent pad for. In the first auxiliary absorber and the second auxiliary absorber, the longitudinal ends of the second auxiliary absorbers at both ends in the width direction are the longitudinal ends of each of the first auxiliary absorbers. Any of claims 1 to 7, wherein the portions are arranged so as to be separated from each other substantially in parallel in the longitudinal direction, and the separation distance is 1/10 or less with respect to the dimension in the longitudinal direction of the absorber. Absorbent pad for preventing loose stool leakage as described in. In the first auxiliary absorber and the second auxiliary absorber, the longitudinal ends of the second auxiliary absorbers at both ends in the width direction are the longitudinal ends of each of the first auxiliary absorbers. The absorbent pad for preventing loose stool leakage according to any one of claims 1 to 7, which is arranged jointly with the portion. The absorbent pad for preventing loose stool leakage according to any one of claims 1 to 9, wherein the surface material is a hydrophilic thermal bond nonwoven fabric or a hydrophilic spunbonded nonwoven fabric. The loose stool leakage prevention according to any one of claims 1 to 10, wherein the absorbent layer is formed of any of an absorbent fiber, a mixture of absorbent fibers and a highly absorbent polymer, and a laminated body of a hydrophilic non-woven fabric. Absorbent pad for.

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