JP2022099978A - Absorbent article - Google Patents

Abstract

To provide an absorbent article that can be used for wide applications, has high versatility, and provides excellent space saving at the time of storage.SOLUTION: An absorbent article 1 having a width direction X, a longitudinal direction Y, and a thickness direction Z includes a liquid permeable top sheet 11, an absorber 12, and a liquid impermeable back sheet 13 having a surface to be a non-skin surface side at the time of usage on which a remover is applied, in this order. The absorbent article 1 comprises at least: a body part 10 in which in a cross sectional view along the width direction X of the absorbent article 1, an end 111 of the liquid permeable top sheet 11 and an end 131 of the liquid impermeable back sheet 13 are joined by a liquid impermeable nonwoven fabric 14; and a removal sheet 20 including a removal sheet base material 21 and an adhesive layer 22. The removal sheet 20 is disposed on a surface of the body part 10 so that the adhesive layer 22 covers at least part of a surface of the liquid impermeable back sheet 13.SELECTED DRAWING: Figure 2

Description

The present invention relates to an absorbent article.

Generally, an absorbent article is composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between the top sheet and the back sheet, and a body fluid such as urine is contained. , Absorbed by the absorber through the top sheet. Such absorbent articles include various products such as absorbent pads (urine absorbing pads, light incontinence pads, etc.), disposable diapers (pants-type disposable diapers, tape-fastened disposable diapers, etc.), sanitary napkins, etc., depending on the application. exist. It can be used for a wide range of purposes, from babies to nursing care for the elderly. In this way, even if it is called an absorbent article, there are a wide variety of uses and products, and various products are being developed.

Regarding the absorbent articles, for example, Patent Document 1 describes a liquid-impermeable sheet, a liquid-permeable sheet disposed on one side of the liquid-impermeable sheet, and these liquid-impermeable sheets and liquid-permeable sheets. A pair of absorbent articles having a unidirectionally long absorber disposed between the sex sheet and extending in the length direction of the absorber along both sides in the width direction of the absorber. It has a tubular portion of the above and a pair of string-shaped members extending in the length direction of the tubular portion inserted into each of the pair of tubular portions, and the pair of string-shaped members have both ends. , Both ends of the inserted tubular portion in the length direction are fixed to each other, and the portions other than the both ends of each of these string-shaped members are lead-out holes provided on the peripheral surface of the tubular portion. An absorbent article is disclosed that can be pulled out to the outside of the tubular portion through.

Japanese Unexamined Patent Publication No. 2014-233603

As described above, since there are a wide variety of uses and products even if it is said to be an absorbent article, it is desired to develop an absorbent article that can be used in a wide range of applications and has high versatility. Further, it is also desired that the absorbent article is excellent in space saving at the time of storage. For example, space saving not only when storing and storing absorbent goods in warehouses and stores, but also when storing them as emergency disaster prevention supplies such as those stored in evacuation shelters and various facilities. There is a need for. Since the stockpiling of disaster prevention supplies has been promoted due to the growing awareness of disaster prevention in recent years, such needs for absorbent goods as disaster prevention supplies are increasing. Furthermore, in the event of a disaster, it can be used in a wide range of applications such as absorbent pads (urine absorbing pads, light incontinence pads, etc.), disposable diapers (pants-type disposable diapers, tape-fastened disposable diapers, etc.), sanitary napkins, etc., and is highly versatile. Absorbent articles with diapers will come in handy.

The present invention has been made in view of such circumstances, and it is intended to provide an absorbent article which can be used for a wide range of purposes, has high versatility, and is excellent in space saving during storage. The purpose.

As a result of diligent studies to achieve the above-mentioned object, the present inventor is an absorbent article having a width direction, a vertical direction, and a thickness direction. A liquid-impermeable back sheet coated with a release agent on the surface to be the skin surface side is included in this order, and the end portion of the liquid-permeable top sheet and the end portion of the liquid-permeable top sheet in a cross-sectional view along the width direction of the absorbent article. A main body portion to which the end portion of the liquid-impermeable back sheet is joined by a liquid-impermeable non-woven fabric; and a base material for a release sheet and an adhesive layer laminated on the surface of the base material for a release sheet. The release sheet is an absorbent article that comprises at least a release sheet; the release sheet is arranged on the surface of the main body so that the adhesive layer covers at least a part of the surface of the liquid impermeable back sheet. Based on these findings, the present invention has been completed.

That is, the present invention is as follows.

(1)
It is an absorbent article having width, vertical, and thickness directions, and is a liquid-permeable top sheet, an absorbent body, and a liquid-impermeable bag in which a release agent is applied to the surface that becomes the non-skin surface side during use. The sheets are included in this order, and in a cross-sectional view of the absorbent article along the width direction, the end portion of the liquid permeable top sheet and the end portion of the liquid permeable back sheet are liquid impermeable. The release sheet comprises at least a release sheet including a main body portion bonded by a permeable non-woven fabric, a base material for a release sheet, and an adhesive layer laminated on the surface of the base material for a release sheet. An absorbent article that is arranged on the surface of the body so that the adhesive layer covers at least a portion of the surface of the liquid impermeable backsheet.
(2)
The absorbent article according to (1), wherein the absorbent article can be wound so that the release sheet is on the outside and the main body is on the inside to form a roll body.
(3)
In the absorbent body, two or more concave grooves are formed in parallel along the vertical direction of the absorbent article on the surface on the side in contact with the liquid impermeable back sheet, and the main body portion has the concave groove. The absorbent article according to (1) or (2), which is bendable along a groove.

According to the present invention, it is possible to provide an absorbent article that can be used in a wide range of applications, has high versatility, and is excellent in space saving during storage.

FIG. 1 is a bottom view of the absorbent article according to the present embodiment as viewed from the side that becomes the skin surface side at the time of use. FIG. 2 is a cross-sectional view taken along the line X1-X1 of FIG. FIG. 3 is a partial cross-sectional view of the end of FIG. FIG. 4 is a partial cross-sectional view showing an example of the usage mode of the absorbent article according to the present embodiment. FIG. 5 is a partial cross-sectional view showing a state in which the absorbent article of FIG. 4 is cut. FIG. 6 is a partial cross-sectional view showing a state in which the release sheet is to be peeled off from the cut absorbent article of FIG. FIG. 7 is a top view showing another example of the usage mode of the absorbent article according to the present embodiment. FIG. 8 is a partial cross-sectional view of the end of FIG. FIG. 9 is a partial cross-sectional view showing a state in which a part of the release sheet of FIG. 8 is peeled off and attached to underwear. FIG. 10 is a side view of the roll body around which the absorbent article of FIG. 7 is wound. FIG. 11 is a side view showing a state in which the end portion of the roll body of FIG. 10 is pulled out and a required amount is cut. FIG. 12 is a top view showing another example of the usage mode of the absorbent article according to the present embodiment. FIG. 13 is a partial cross-sectional view showing an example of the usage state of the absorbent article of FIG. FIG. 14 is a bottom view showing an example of a case where both ends of the absorbent article according to the present embodiment are bent and attached to underwear. FIG. 15 is a cross-sectional view taken along the line X2-X2 of FIG.

Hereinafter, embodiments for carrying out the present invention (hereinafter, simply referred to as “the present embodiment”) will be described in detail. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to the following contents. The present invention can be appropriately modified and carried out within the scope of the gist thereof.

Then, in the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted. In addition, the positional relationship such as up, down, left, and right shall be based on the positional relationship shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the ratios shown.

In this specification, the term with "abbreviation" indicates the meaning of the term excluding the "abbreviation" within the scope of the common general knowledge of those skilled in the art, and the meaning itself excluding the "abbreviation" is used. Also included.

FIG. 1 is a bottom view of the absorbent article according to the present embodiment as viewed from the side that becomes the skin surface side at the time of use, FIG. 2 is a sectional view taken along line X1-X1 of FIG. 1, and FIG. 3 is a cross-sectional view. , FIG. 2 is a partial cross-sectional view of the end portion of FIG.

The absorbent article 1 according to the present embodiment is an absorbent article 1 having a width direction X, a vertical direction Y, and a thickness direction Z, and is a liquid-permeable top sheet 11, an absorbent body 12, and non-skin when used. The liquid permeable back sheet 13 to which the release agent is applied to the surface to be the surface side is included in this order, and the edge of the liquid permeable top sheet 11 in the cross-sectional view along the width direction X of the absorbent article 1. The main body 10; and the release sheet base material 21 and the release sheet base material 21 to which the portion 111 and the end 131 of the liquid impermeable back sheet 13 are joined by the liquid impermeable non-woven fabric 14. A release sheet 20 including an adhesive layer 22 laminated on the surface; An absorbent article 1 disposed on the surface of 10.

The main body 10 has the end 111 of the liquid-permeable top sheet 11 and the liquid-impermeable back sheet in a state where the absorbent article 1 is cross-sectionally viewed in the width direction X (cross-sectional view of the X1-X1 line in FIG. 1). The end 131 of 13 is joined by the liquid-impermeable nonwoven fabric 14. Specifically, as shown in FIG. 2, one end of the liquid-impermeable nonwoven fabric 14 is joined to the end 131 of the liquid-impermeable back sheet 13 via the first joining portion 151. The other end of the liquid-impermeable nonwoven fabric 14 is joined to the end 111 of the liquid-permeable top sheet 11 via the second joining portion 152. As a result, the liquid-impermeable nonwoven fabric 14 can also serve as the end treatment of the main body portion 10.

The release sheet 20 is arranged on the surface of the main body 10 so that the adhesive layer 22 covers at least a part of the surface of the liquid impermeable back sheet 13.

Unless otherwise specified, the term "when the absorbent article 1 is worn" means at least one of the time when the absorbent article 1 is worn and the time after the absorbent article 1 is worn. Wearing refers to a state in which the absorbent article 1 is attached to the body. The absorbent article 1 is usually worn on the body inside clothing, but may be worn on the body so that at least a part of the absorbent article 1 is exposed to the outside.

The skin side surface is the surface facing the wearer's skin when worn among the front and back surfaces of each member of the absorbent article 1, and the non-skin side surface is the front and back surfaces of each member of the absorbent article 1. , The surface facing the wearer's clothing when worn. Body fluid refers to the liquid excreted from the body such as urine, blood, and water in loose stool.

As a mechanism for the absorbent article 1 to absorb the body fluid, for example, the body fluid first passes through the liquid-permeable top sheet 11 which is the side surface of the skin, and the absorber 12 absorbs the body fluid. Then, the liquid-impermeable back sheet 13, which is a non-skin side surface, prevents the body fluid from leaking to the outside, and the body fluid is held by the absorber 12.

The width direction X of the absorbent article 1 is the lateral direction of the absorbent article 1. The vertical direction Y of the absorbent article 1 is a direction orthogonal to the width direction X, and is a longitudinal direction of the absorbent article 1. The thickness direction Z of the absorbent article 1 is the stacking direction of each member such as the liquid permeable top sheet 11, the absorbent body 12, and the liquid permeable back sheet 13, and is the vertical direction of the paper surface in FIG. .. As described above, FIG. 1 is a schematic view seen from the side on the skin surface side, and in FIG. 2, from the lower side to the upper side (from the liquid permeable top sheet 11 side to the liquid permeable back sheet 13). The state seen (toward the side) is illustrated.

Hereinafter, each component will be described.

<Main body>

The liquid-permeable top sheet 11, the absorber 12, and the liquid-impermeable back sheet 13 are laminated on the main body 10 from the skin side surface to the non-skin side surface (from the lower side to the upper side in FIG. 2). ..

(Liquid permeable top sheet)

Since the liquid-permeable top sheet 11 becomes the side surface of the skin when worn, it is preferable that the liquid-permeable top sheet 11 has a property of allowing body fluid to quickly pass toward the absorber 12. From such a viewpoint, a substrate having a liquid permeability that allows the body fluid to move to the absorber 12 can be used. Examples of the liquid permeable top sheet 11 include hydrophilic non-woven fabrics such as air-through non-woven fabrics, thermal bonded non-woven fabrics, and spunbonded non-woven fabrics, composite non-woven fabrics in which the same or different kinds of non-woven fabrics such as thermal bond / spunbond are laminated, urethane foam, and polyethylene. Examples thereof include a foamed film made of foam and the like, a composite sheet which is a laminate of two or more of these, and the like. Among these, from the viewpoint of transferability of body fluid to the absorber 12 (liquid permeability), diffusivity of body fluid in the absorbent article 1, air-through non-woven fabric, thermal bond non-woven fabric, spunbond non-woven fabric, thermal bond / span. It is preferably a bonded composite non-woven fabric or the like. Examples of the material of these non-woven fabrics include synthetic fibers such as polypropylene and polyethylene, recycled fibers such as rayon, and natural fibers such as cotton.

The surface of the liquid-permeable top sheet 11 may be embossed or perforated, for example, from the viewpoint of improving the liquid permeability. The embossing and drilling can be performed by a known method. Further, in order to reduce irritation to the skin, the liquid permeable top sheet 11 may contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer and the like.

(Absorber)

The absorber 12 is a member that absorbs body fluid. The absorber 12 preferably contains, for example, a highly absorbent polymer 121 and pulp.

Examples of the pulp include wood pulp, used paper pulp, non-wood pulp and the like. The pulp may be made of 100% wood pulp, or may contain used paper pulp or non-wood pulp in addition to wood pulp, but fluff pulp is preferable. As the wood pulp, softwood bleached kraft pulp (NBKP) and broadleaf tree bleached kraft pulp (LBKP) are preferable, and softwood bleached kraft pulp (NBKP) is more preferable. As the coniferous bleached kraft pulp (NBKP), NBKP such as Southern pine or Douglas-firs can be used. When the used paper pulp is contained, the used paper pulp is preferably a milk carton or the like.

The basis weight of the pulp is not particularly limited, but is preferably 180 g / m ² or more and 375 g / m ² or less. For this basis weight, for example, a test piece is obtained by cutting out a measurement target. Then, the mass and area of the test piece are measured, and the mass can be divided by the area to calculate the basis weight of the test piece. When SAP particles, which will be described later, are contained, the mass is measured after removing the mass.

The super absorbent polymer 121 is also called SAP (Super Absorbent Polymer) or the like, and is not particularly limited as long as it can absorb body fluids and prevent backflow of body fluids. Examples of SAP include polymers containing a carboxyl group-containing monomer. Examples of such polymers include polyacrylic acid salt, polyaspartate salt, (starch-acrylic acid) graft copolymer, (acrylic acid-vinyl alcohol) copolymer, and (isobutylene-maleic anhydride) polymer. And its Ken products and the like. These may be used alone or in combination of two or more. Among these, polyacrylic acid salt is preferable, and sodium polyacrylate is more preferable, from the viewpoint of the amount of body fluid absorbed per mass. And these are preferably granular particles (SAP particles).

The basis weight of the highly absorbent polymer 121 is not particularly limited, but is preferably 70 g / m ² or more and 125 g / m ² or less from the viewpoint of absorption amount, tactile sensation, comfort after absorption and the like.

Further, in the absorbent body 12, two or more concave grooves 122 are formed in parallel along the vertical direction Y of the absorbent article 1 on the surface on the side in contact with the liquid impermeable back sheet 13, and the main body portion 10 is formed. , It is preferable that it can be bent along the concave groove 122. In the present embodiment, the case where seven concave grooves 122 are arranged in parallel along the vertical direction Y is exemplified in the absorbent article 1. This has the advantage that the main body portion 10 can be easily bent along the vertical direction Y. For example, as will be described in detail later, when such an absorbent article 1 is attached to the underwear U and used, it functions as a dam for preventing lateral leakage by bending from any of the concave grooves 122 as a starting point. A folded portion B (see FIG. 15) can be provided.

Regarding the groove depth of the concave groove 122, it is preferable that the main body portion 10 is bendable along the concave groove 122 of the absorber 12 and has a certain depth. As described above, since the dimensional shape of the main body portion 10 can be easily changed according to the purpose of use, the preference of the wearer, etc., the range of applicable applications is widened, and the versatility is further improved.

When the concave groove 122 is not provided in the absorber 12, when the main body 10 is bent, the bent portion swells by the thickness of the absorber 12 (see the thickness direction Z), which may cause bulkiness. By providing the concave groove 122, such swelling of the bent portion can be eliminated, so that space saving at the time of bending can be further improved.

The absorber 12 can be formed in accordance with the manufacturing method of the absorber used for known absorbent articles. For example, a manufacturing method for forming the absorber 12 using a drum-shaped fiber stacking machine (for example, a fiber stacking drum or the like) can be adopted. Alternatively, it may be a manufacturing method in which fibers are stacked on continuous wires such as airlaid. Further, in the case of forming the concave groove 122, for example, a method of forming the concave groove 122 can be adopted by using a wire having a convex portion corresponding to the shape of the concave groove 122 when stacking fibers. Alternatively, it is also possible to adopt a method of producing a flat absorber in which the concave groove 122 is not formed and then performing embossing shaping corresponding to the concave groove 122.

(Liquid impermeable back sheet)

The liquid impermeable back sheet 13 is a breathable or non-breathable liquid impermeable so that the body fluid held by the absorber 12 does not leak to the outside and wet clothes or adhere to the skin surface. A material having a property can be suitably used as a base material.

Examples of the material of the liquid-impermeable back sheet 13 include a resin film, a composite sheet which is a laminate of a resin film and a non-woven fabric, and the like. Examples of the resin film include resin films such as polyester, polyvinyl alcohol, polyethylene and polypropylene, and composite films of polyethylene and polypropylene. Examples of the non-woven fabric used for the composite sheet include spunbond non-woven fabric, melt-blow non-woven fabric, composite non-woven fabric which is a laminate of spunbond non-woven fabric and melt-blow non-woven fabric, and composite which is a laminate of spunbond non-woven fabric, melt-blow non-woven fabric and spunbond non-woven fabric. Non-woven fabric and the like can be mentioned. Among these, a polyethylene film, a composite film of polyethylene and polypropylene is preferable, and a polyethylene film or a composite non-woven fabric of polyethylene and polypropylene is more preferable.

Further, from the viewpoint of preventing stuffiness during wearing, the liquid impermeable back sheet 13 having breathability is preferable. The method for imparting air permeability to the liquid-impermeable back sheet 13 is not particularly limited, and a known method can be adopted. For example, a method of making the resin film which is the base material of the liquid impermeable back sheet 13 porous, a method of embossing the base material of the liquid impermeable back sheet 13, and the like can be mentioned. As an example of the method of making the resin film porous, there is a method of adding a filler to the resin to form a film, and removing the filler from the obtained film. Examples of the filler include inorganic salts such as calcium carbonate.

Further, the liquid impermeable back sheet 13 has a release agent coated on the surface in contact with the release sheet 20 (that is, the surface opposite to the surface on which the absorber 12 is laminated). The type of the release agent can be determined in consideration of the material of the adhesive layer 22 of the release sheet 20, and is not particularly limited, and examples thereof include a silicone-based release agent and a fluorine-based release agent.

(Liquid impermeable non-woven fabric)

The liquid-permeable top sheet 11, the absorber 12, and the liquid-impermeable back sheet 13 described above are laminated on the main body 10 from the skin side surface to the non-skin side surface (from the lower side to the upper side in FIG. 2). The end 111 of the liquid-permeable top sheet 11 and the end 131 of the liquid-impermeable back sheet 13 are joined by the liquid-impermeable non-woven fabric 14. The liquid-impermeable nonwoven fabric 14 can be joined by, for example, the joining portion 15 (first joining portion 151 and second joining portion 152). The joining method using the liquid-impermeable nonwoven fabric 14 can be performed by, for example, a hot melt adhesive, heat sealing, ultrasonic welding, or the like. In FIG. 2, a method of joining through the joint portion 15 is illustrated, but it is not always necessary to pass through the joint portion 15.

The liquid-impermeable nonwoven fabric is preferably a spunbonded nonwoven fabric having a water pressure resistance of 200 Pa or more based on JIS L 1092 (low water pressure method) or a nonwoven fabric in which spunbond and melt blow are laminated.

<Release sheet>

The release sheet 20 includes a release sheet base material 21 and an adhesive layer 22 laminated on the surface thereof, and is reused as an adhesive tape to be attached to an object to be adhered such as underwear, as will be described later. You can also do it.

(Base material for release sheet)

The material of the base material 21 for the release sheet is not particularly limited, but may be any material as long as it can prevent the components of the adhesive layer 22 from seeping out and is soft to the touch. For example, a resin film, a non-woven fabric, a composite sheet which is a laminate of a resin film and a non-woven fabric, and the like can be mentioned. Examples of the resin film include a film made of a synthetic resin such as polyester, polyethylene and polypropylene, and a composite film of polyethylene and polypropylene. Examples of the non-woven fabric include spunbonded non-woven fabric, melt-blow non-woven fabric, composite non-woven fabric which is a laminate of spunbond non-woven fabric and melt-blow non-woven fabric, composite non-woven fabric which is a laminate of spunbond non-woven fabric, melt-blow non-woven fabric and spunbond non-woven fabric, and the like. .. Among these, a spunbonded non-woven fabric or a composite non-woven fabric which is a laminate of a spunbonded non-woven fabric and a melt-blown non-woven fabric is preferable.

The basis weight of the release sheet base material 21 is not particularly limited, but is preferably 20 g / m ² or more and 80 g / m ² or less. If it is lower than 20 g / m ² , the highly absorbent polymer may spill when the cut surface of the main body is covered with the release sheet. Further, when it is higher than 80 g / m ² , it becomes stiff and difficult to handle.

(Adhesive layer)

The adhesive layer 22 is formed by, for example, applying a liquid containing an adhesive component (for example, an adhesive) to the above-mentioned release sheet base material 21, and laminating it on the liquid impermeable back sheet 13. Can be made to. Alternatively, the pressure-sensitive adhesive may be applied to the release sheet base material 21 by hot melt, and the adhesive may be laminated on the liquid-impermeable back sheet 13.

The adhesive component is not particularly limited, and for example, the same component used for an absorption pad (urine absorbing pad, light incontinence pad, etc.), a slip prevention of a sanitary napkin, or the like can be adopted. Specific examples of the adhesive component include solvent-type acrylic pressure-sensitive adhesives, silicone-based adhesives, hot-melt type synthetic rubber-based pressure-sensitive adhesives such as styrene-butadiene copolymers and styrene-isoprene copolymers. More preferred.

As will be described later, the release sheet 20 is an adhesive sheet for fixing the main body 10 to an object to be adhered (for example, a diaper, pants, etc.), a sealing sheet for sealing the end portion of the absorber 12, and the like. The adhesive strength of the adhesive layer 22 is preferably such that the adhesive layer 22 can be reattached even after the release sheet 20 is peeled from the main body 10. By having such an adhesive force, a release sheet more suitable for reuse can be obtained.

Further, as shown in FIG. 3, in a state where the absorbent article 1 is cross-sectionally viewed in the width direction X, the outer edge b of the end portion of the adhesive layer 22 protrudes from the inner edge a1 of the end portion of the joint portion 15, and the joint portion is formed. It is preferable that it does not protrude from the outer edge a2 of the end of 15. By arranging the adhesive layer 22 on the surface of the liquid impermeable back sheet 13 so as to have such a positional relationship, for example, while the absorbent article 1 is stored for a long period of time, the adhesive layer 22 becomes X in the width direction. It is possible to prevent a problem that the material spreads too much and protrudes from the release sheet base material 21 to the outside.

For example, when the absorbent article 1 is wound around a roll body and stored, or when a plurality of absorbent articles 1 are stacked and stored, if the adhesive layer 22 protrudes outside the release sheet base material 21, it is adjacent to the adhesive layer 22. The adhesive layer 22 is placed on the surface of the liquid-impermeable backsheet 13 so as to have the above-mentioned positional relationship, which causes a problem that the absorbent layers 1 are stuck to each other by the edge and it becomes difficult to take out the absorbent article 1. Therefore, such a problem does not occur, so that it is suitable for long-term storage.

The dimension of the absorbent article 1 in the vertical direction Y is not particularly limited. The dimension of the absorbent article 1 in the width direction X is not particularly limited, but is, for example, in the range of 50 mm or more and 500 mm or less. By setting the dimensions of the absorbent article 1 to such a range, absorption more suitable for absorbent pads (urine absorbing pads, light incontinence pads, etc.), disposable diapers (pants-type disposable diapers, tape-stopping disposable diapers, etc.), sanitary napkins, etc. It can be a sex article 1.

The absorbent article 1 is suitable as, for example, an absorbent pad (urine absorbing pad, light incontinence pad, etc.), a disposable diaper (pants-type disposable diaper, tape-fastened disposable diaper, etc.), a sanitary napkin, etc., regardless of whether it is for a baby or an adult. Can be used. Furthermore, it can be used not only for humans but also for pet toilets and toilet seats for various pets. Further, the absorbent article 1 can also be used in combination with various paper diapers as an outer and an absorbent article as an inner. Therefore, the absorbent article 1 may be provided with three-dimensional gathers (not shown) for preventing the outflow of body fluid depending on its use.

The absorbent article 1 is excellent in space saving during storage, can be used in a wide variety of usage modes, is highly versatile, and can be used in a wide range of applications. Hereinafter, some variations of the method of using the absorbent article 1 according to the present embodiment will be exemplified.

<How to use>

FIG. 4 is a partial cross-sectional view showing an example of the usage mode of the absorbent article according to the present embodiment, FIG. 5 is a partial cross-sectional view showing a state in which the absorbent article of FIG. 4 is cut, and FIG. , FIG. 5 is a partial cross-sectional view showing a state in which a release sheet is to be peeled off from the cut absorbent article of FIG.

The absorbent article 1 can be used as an absorbent article 1a, 1b having a desired size and shape by cutting a desired portion.

FIG. 4 is a partial cross-sectional view of the absorbent article 1 in a cross-sectional view along the vertical direction Y, and is a state in which the absorbent article 1 is to be cut along the thickness direction Z of the absorbent article 1. (See “Cut” in FIG. 4).

FIG. 5 is a partial cross-sectional view showing a state immediately after cutting in FIG. 4, and is separated into an absorbent article 1a and an absorbent article 1b.

FIG. 6 shows a state in which the release sheet 20 of the cut absorbent article 1a is about to be peeled upward (see arrow F1). By peeling the release sheet 20 from the main body 10, the liquid-impermeable back sheet 13 of the main body 10 can be exposed. Since the liquid-impermeable back sheet 13 has a release agent applied to the surface that becomes the skin surface side when used, the release sheet 20 can be reattached and re-peeled as described later, and the release sheet 20 can be reattached or re-peeled. Contribute to reuse.

7 is a top view showing another example of the usage of the absorbent article according to the present embodiment, FIG. 8 is a partial cross-sectional view of the end portion of FIG. 7, and FIG. 9 is a peeling of FIG. It is a partial cross-sectional view which shows the state which a part of the sheet was peeled off and attached to the underwear.

The absorbent article 1c is used by cutting a part of the release sheet 20 to obtain a release sheet piece 20a and attaching the release sheet piece 20a so as to cover the end portion of the main body portion 10. FIG. 7 shows a state in which the absorbent article 1c is viewed from the non-skin surface side (liquid impermeable back sheet 13 side). Then, the absorbent article 1c is reattached to the cut-off release sheet piece 20a so as to seal the end portion of the main body portion 10 (see FIG. 8).

Further, according to the present embodiment, a part of the release sheet piece 20a can be peeled off and the adhesive layer 22 can be attached to the underwear U to be fixed to the underwear U (see FIG. 9). Here, a method of attaching the release sheet piece 20a to the underwear U and using it will be described by taking the absorbent article 1c as an example.

First, since the release agent is applied to the liquid-impermeable back sheet 13, the release sheet piece 20a sealing the end portion of the main body portion 10 can be peeled off again. As a result, the release sheet piece 20a can be reused as an adhesive sheet for fixing the main body portion 10 to the object to be adhered (for example, diapers, pants, etc.).

For example, from the state where the entire surface of the adhesive layer 22 of the release sheet piece 20a is attached to the end portion of the main body portion 10 (see FIG. 8), only the portion covering the liquid impermeable back sheet 13 is the release sheet piece 20a. Peel off and deploy to the outside. As a result, first, only a part of the adhesive layer 22 of the release sheet piece 20a is exposed, and the other part of the release sheet piece 20a is attached to the end portion of the main body portion 10. Then, by attaching the exposed portion of the adhesive layer 22 to the underwear U, the main body portion 10 can be fixed to the underwear U (see FIG. 9).

When a part of the release sheet 20 is cut out and used as the release sheet piece 20a, the length d of the cut out portion of the release sheet 20 is not particularly limited, but is usually in the range of 20 mm or more and 100 mm or less. Is preferable. With such a length d, the edge treatment can be performed more effectively, and as described above, it can also be used as an adhesive tape for fixing the main body portion 10 to an object to be adhered such as underwear U. It can be suitably used.

10 is a side view of the roll body wound with the absorbent article of FIG. 7, and FIG. 11 is a side view showing a state in which the end portion of the roll body of FIG. 10 is pulled out and a required amount is cut. ..

The absorbent article 1c can be stored in a roll state. Specifically, the absorbent article 1c can be rolled so that the release sheet 20 is on the outside and the main body 10 is on the inside. By making it into a roll, it contributes to space saving during storage.

First, in the absorbent article 1c, a portion covering the periphery of the end of the roll body of the release sheet 20 is cut off to prepare the release sheet piece 20a. The release sheet piece 20a seals the end portion of the main body portion 10 on the drawer side to protect the end portion of the main body portion 10. According to the present embodiment, since the end portion (for example, the end end portion and the cut end portion) of the main body portion 10 can be sealed in this way, it contributes to the end treatment of the main body portion 10 and the protection of the cut surface.

For example, when the main body 10 is cut, the cut surface of the absorber 12 may be exposed, and the highly absorbent polymer particles (SAP particles) 121 contained inside the absorber 12 may spill out. .. In order to particularly prevent such a phenomenon, it is preferable to perform end treatment for sealing the cut surface with the release sheet piece 20a. When the release sheet piece 20a is used for such end sealing, the length of the release sheet piece 20a in the vertical direction Y is not particularly limited, but is usually preferably in the range of 20 mm or more and 100 mm or less.

Here, the case where the absorbent article 1c in which a part of the release sheet 20 is cut off is used as a roll body is illustrated, but the absorbent article 1 in which the release sheet 20 is not cut off is also used as a roll body in the same manner. Of course you can. Such a roll body can be used by grasping the end portion (see the release sheet piece 20a in FIG. 8), pulling out a required amount in the feeding direction R, and cutting a desired portion.

For example, a predetermined amount of absorbent article 1c is withdrawn from the roll body in the feeding direction R (see FIG. 10), and one place of the fed absorbent article 1c is cut to absorb a required amount. Article 1e can be taken out (see FIG. 11).

Then, as shown in FIG. 11, the ends (cut surfaces) of the absorbent articles 1d and 1e newly formed by cutting can be further sealed by the release sheet pieces 20b and 20c. The release sheet piece 20b is a part of the release sheet 20 that covers the end portion (cut surface) on the drawer side of the absorbent article 1d. Similarly, the release sheet piece 20c is a part of the release sheet 20 covering the cut end (cut surface) of the absorbent article 1e. In the roll body of the present embodiment, since the release sheet 20 is located on the outside of the roll body, there is an advantage that the release sheet pieces 20b and 20c can be easily cut off. Then, the absorbent article 1d, which is the remaining roll body, may be stored until the next use.

FIG. 12 is a top view showing another example of the usage mode of the absorbent article according to the present embodiment, and FIG. 13 is a partial cross-sectional view showing an example of the usage state of the absorbent article of FIG.

Subsequently, with respect to the absorbent article 1f, an embodiment in which the release sheet pieces 20d and 20e peeled off from the main body portion 10 are reused as adhesive tapes for fixing the four points of the main body portion 10 will be exemplified. The absorbent article 1f is obtained by cutting the release sheet pieces 20d and 20e from the release sheet 20 by the above-mentioned method and reattaching them to the places shown in the drawing.

The release sheet pieces 20d and 20e cut out from the release sheet 20 are used when the cut end is sealed to temporarily prevent the polymer absorber from spilling from the end and then attached to the object to be adhered. Can be used to fix the main body 10 to the object to be adhered by attaching to the object to be adhered.

For example, in the absorbent article 1e (see FIG. 11) cut from the roll body, the release sheet 20 may remain in the central portion. It is also possible to cut off such an unnecessary portion of the release sheet 20 and use it as the release sheet pieces 20d and 20e. By attaching the release sheet pieces 20d and 20e to a desired location of the main body portion 10 (for example, in the case of FIG. 12, the end portion in the width direction and the end portion in the vertical direction of the main body portion 10), the main body portion 10 is attached. It can be stably fixed to the object to be adhered (underwear, etc.).

Further, as shown in FIG. 13, the release sheet piece 20e can be attached so as to integrally cover not only the main body portion 10 but also the crotch K (see the arrow F2 in FIG. 12).

FIG. 14 is a bottom view showing an example of a case where both ends of the absorbent article according to the present embodiment are bent and attached to the underwear, and FIG. 15 is a sectional view taken along line X2-X2 of FIG.

According to the present embodiment, the main body portion 10 can be bent and used for the purpose of preventing lateral leakage, adjusting the width and length, and the like. For example, the above-mentioned absorbent article 1 is bent along the concave groove 122 (see FIG. 2) of the absorber 12 and then attached to the underwear U. FIG. 14 illustrates a state in which the absorbent article 1 is attached to the underwear U and viewed from the side of the absorbent article 1 (from the bottom to the top in FIG. 15).

In this case, the absorbent article 1 cannot be provided with three-dimensional gathers due to its structure. Therefore, there is a concern about horizontal leakage. Therefore, by bending the absorbent body 12 along the concave groove 122, the folded-back portion B is provided along both ends of the absorbent article 1 in the vertical direction Y. At that time, the folded-back portion B can also be fixed by the above-mentioned release sheet piece.

Here, an embodiment in which the absorbent article 1 is bent and used without peeling off the release sheet 20 is illustrated, but the release sheet 20 is peeled off to make only the main body portion 10, and then the main body portion 10 is bent. Of course, it may be used.

It goes without saying that each of the methods of use described above is merely an example of the method of using the absorbent article 1, and in addition to this, a suitable method of use can be appropriately selected according to the purpose of use.

As described above, the absorbent article 1 has a simple structure, can be used for a wide range of purposes, has high versatility, and is excellent in space saving during storage. Further, as a preferred embodiment thereof, size adjustment and cutting can be made more easily. Therefore, regardless of whether it is for babies or adults, it can be suitably used as an absorbent pad (urine absorbing pad, light incontinence pad, etc.), a disposable diaper (pants-type disposable diaper, tape-fastened disposable diaper, etc.), a sanitary napkin, or the like. And it can be suitably used not only for humans but also for pet toilets, pet sheets, toilet seats and the like for various pets.

Further, the absorbent article 1 has the advantage that it can be deformed or changed according to the purpose so as to have a shape suitable for these various uses by bending or cutting it, and it saves space during storage. Since it also has the advantage of being excellent, it can be suitably used as a disaster prevention product that is stockpiled for emergencies such as in the event of a disaster.

1,1a, 1b, 1c, 1d, 1e, 1f: absorbent article,
10: Main body,
11: Liquid permeable top sheet,
111: Edge (of liquid permeable topsheet),
12: Absorber,
121: Highly absorbent polymer (highly absorbent polymer particles),
122: concave groove,
13: Liquid impermeable back sheet,
131: End (of liquid impermeable backsheet),
14: Liquid impermeable non-woven fabric,
15: Joint,
151: 1st joint,
152: Second joint,
20: Release sheet,
20a, 20b, 20c, 20d, 20e: release sheet piece,
21: Base material for release sheet,
22: Adhesive layer,
R: Feeding direction,
a1: Inner edge of the end (of the joint),
a2: Outer edge of the end (of the joint),
b: Outer edge of the edge (of the adhesive layer),
d: length,
K: Crotch,
B: Folded part,
U: Underwear,
F1, F2: Arrow,
X: width direction,
Y: Vertical direction,
Z: Thickness direction

Claims (3)

An absorbent article having a width direction, a vertical direction, and a thickness direction.
It contains a liquid-permeable top sheet, an absorber, and a liquid-impermeable back sheet on which a release agent is applied to the surface that is on the non-skin surface side during use, in this order.
In a cross-sectional view of the absorbent article along the width direction, the end portion of the liquid permeable top sheet and the end portion of the liquid permeable back sheet are joined by a liquid permeable nonwoven fabric. A release sheet containing a main body; a base material for a release sheet, and an adhesive layer laminated on the surface of the base material for a release sheet;
At least prepare
The release sheet is arranged on the surface of the main body so that the adhesive layer covers at least a part of the surface of the liquid impermeable back sheet.
Absorbent article. The absorbent article can be wound into a roll body so that the release sheet is on the outside and the main body is on the inside.
The absorbent article according to claim 1. In the absorbent body, two or more concave grooves are formed in parallel along the vertical direction of the absorbent article on the surface on the side in contact with the liquid impermeable back sheet.
The main body portion can be bent along the concave groove.
The absorbent article according to claim 1 or 2.

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