JP2023003175A - absorbent article - Google Patents

Abstract

To provide an individually packaged absorbent article that allows replacement work of an individually packaged absorbent article to be executed easily in a sanitary manner, and allows a used absorbent article to be discarded with good concealing performance.SOLUTION: An absorbent article 50 includes a liquid permeable top sheet 10, a liquid non-permeable back sheet 30, an absorber 20 disposed between these sheets, and an individually packaged sheet 70 disposed on a non-skin side of the back sheet 30. The individually packaged sheet 70 includes a first individually packaged sheet 71 and a second individually packaged sheet 72. The first individually packaged sheet 71 is stuck to a non-skin side surface of the back sheet 30 through a first adhesive layer 80, and the second individually packaged sheet 72 is stuck to a non-skin side surface of the first individually packaged sheet 71 through a second adhesive layer 81. A release agent is applied to each of skin side surfaces of the first individually packaged sheet 71 and the second individually packaged sheet 72. At least the first individually packaged sheet 71 is a non-woven fabric containing an antibacterial fiber with antibacterial activity of 2.0 or more.SELECTED DRAWING: Figure 2

Description

The present invention relates to absorbent articles.

Absorbent articles generally include a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed therebetween, and absorb body fluids such as urine that have permeated the top sheet. , and the backsheet prevents body fluids from adhering to the wearer's clothing or the like. Absorbent articles come in various forms depending on the application, such as pad products such as light incontinence pads, light incontinence liners, urine absorption pads, and sanitary napkins, and disposable diaper products such as pants-type disposable diapers and tape-fastening type disposable diapers. exist and are widely used by the elderly, adults and infants. Absorbent articles are usually manufactured as products stored in predetermined individual packages.

Among absorbent articles, pad products in particular are generally used by fixing the non-skin-side surface of the back sheet to the underwear of the wearer. In addition, since both hands are required to remove the used pad product from the underwear, it becomes difficult to remove the used pad product while holding the individually packaged body of the new pad product.

When replacing the absorbent article, many people wrap the used absorbent article in a new individual package of the absorbent article and throw it away. At this time, there may be no place to put the new absorbent article until the new absorbent article is taken out from the individual package and the used absorbent article is wrapped and discarded. Even if there is a stand in the toilet compartment, there is an inconvenience that the anti-slipping tape of the absorbent article sticks, and placing the absorbent article face down poses a hygienic concern. Therefore, you can temporarily attach it to your body or gently place it on your lap so that it does not fall off, but in that case, the adhesive strength of the anti-slip tape may weaken and there is a risk of it slipping on the floor when you move. be.

In addition, some people roll up used absorbent articles with toilet paper and throw them away. There is a risk that sexual items may be seen. Also, if the used absorbent article is wrapped with toilet paper many times to prevent it from being exposed, it becomes bulky and easily fills up the trash can.

Various proposals have been made to solve such problems. In Patent Document 1, a packaging sheet for individually packaging absorbent articles, an adhesive tape having one end releasably attached to the surface of the packaging sheet and the other end joined to the longitudinal end of the packaging sheet, The adhesive tape has a first adhesive layer, a first base material, a second adhesive layer, and a second base material laminated in this order, and the first adhesive layer is the non-adhesive layer of the packaging sheet. A connection part is provided that contacts the opposing surface and connects the first base material and the second base material, and the second adhesive layer is bonded to the second base material and is detachably attached to the first base material. and the second adhesive layer is exposed by peeling the second base material and the second adhesive layer from the first base material and folding back with the connection part as the base point, the absorbent A package for an article is disclosed (claim 1). According to Patent Document 1, even if there is no space for placing individual packages of absorbent articles, it is possible to attach the package of absorbent articles to the wall of the toilet room or the wearer's body via the second adhesive layer. It is described that the user can easily replace the absorbent article using both hands (Paragraph 0015).

JP 2013-198586 A

In the absorbent article package described in Patent Document 1, even if the package is temporarily attached to the wall or the body with the second adhesive layer, the possibility of the package falling does not disappear. is not a fundamental solution. Moreover, it cannot be said that the walls are necessarily hygienic in a toilet private room on the go.

It is an object of the present invention to provide an individually wrapped absorbent article that allows the user to sanitarily and easily replace the individually wrapped absorbent article and dispose of the used absorbent article with good concealability. is.

As a result of intensive research by the present inventors in order to solve the above problems, an individual packaging sheet is provided on the non-skin side surface of the back sheet, and the individual packaging sheet is made into a two-layer structure. The inventors have found that a desired absorbent article can be obtained that can be sanitarily and easily put on when replacing the absorbent article, and have completed the present invention. The present invention provides the following absorbent articles.

(1) An absorbent article comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, and an absorbent body disposed between the topsheet and the backsheet,
Having an individual packaging sheet arranged on the non-skin side of the back sheet,
The individual packaging sheet includes a first individual packaging sheet and a second individual packaging sheet,
The first individual packaging sheet is adhered to the non-skin side surface of the back sheet via a first adhesive layer,
The second individual packaging sheet is adhered to the non-skin side surface of the first individual packaging sheet via a second adhesive layer,
The first individual packaging sheet and the second individual packaging sheet are each coated with a release agent on the skin side surface,
The absorbent article, wherein at least the first individual wrapping sheet is a nonwoven fabric containing antibacterial fibers having an antibacterial activity of 2.0 or more.
(2) The absorbent article according to (1) above, further comprising a pair of liquid-impermeable side sheets at both longitudinal ends of the absorbent article on the skin-side surface of the top sheet.
(3) The above (1) or (2), wherein the second individual packaging sheet is a resin film, paper, nonwoven fabric, nonwoven fabric containing antibacterial fibers having an antibacterial activity of 2.0 or more, or a laminate of two or more of these. ) absorbent articles.
(4) The absorbent article according to any one of (1) to (3) above, wherein the release agent is a silicone release agent or a fluorine release agent.

ADVANTAGE OF THE INVENTION According to the present invention, an individually wrapped absorbent article is provided that allows the replacement of the individually wrapped absorbent article to be performed sanitarily and easily, and allows the used absorbent article to be discarded with good concealability.

1 is a plan view, viewed from the top sheet side, schematically showing the configuration of an absorbent article of the present embodiment. FIG. FIG. 2 is a schematic cross-sectional view in the width direction taken along line XX shown in FIG. 1; FIG. 4 is a schematic diagram showing replacement work of the absorbent article of the present embodiment. FIG. 2 is a plan view showing an example of an individual package of a product (absorbent article according to this embodiment).

In this specification, wearing the absorbent article 50 refers to a state in which the absorbent article 50 is worn on the wearer's body, regardless of whether it is before or after absorption of bodily fluids. The longitudinal direction of the absorbent article 50 is the direction indicated by Y in the drawing that extends from front to back through the crotch of the wearer when the absorbent article 50 is worn, and the width direction is the direction relative to the longitudinal direction. The thickness direction is the direction indicated by X in the drawing, which is substantially perpendicular to each other, and the thickness direction is the direction indicated by Z in the drawing, in which the constituent members are laminated. The skin-side surface of the absorbent article 50 and its constituent members is the surface that contacts or faces the wearer's skin, and the non-skin-side surface is the surface that contacts or faces the clothing of the wearer. is the surface. Body fluids refer to liquids excreted from the body to the outside of the body, such as water in urine, blood, and loose stools.

<Absorbent article>
Hereinafter, an absorbent article 50 according to this embodiment will be described with reference to the drawings. 1-2 show an absorbent article 50. FIG. FIG. 3 shows a sequence of operations for replacing the absorbent article 50 . FIG. 4 shows an individual package 51 of absorbent article 50 . Each figure does not define the shape of the absorbent article 50 and each constituent member, the size relationship of the dimensions, and the like.

The absorbent article 50 of the present embodiment can be used as various absorbent articles for babies, adults, and elderly people. It can be used particularly preferably as a product. The lengthwise dimension of the absorbent article 50 is, for example, in the range of 100 mm or more and 800 mm or less, and the widthwise dimension is in the range of, for example, 50 mm or more and 500 mm or less. When each dimension is within the numerical range described above, the absorbent article 50 suitable for light incontinence products, sanitary napkins, panty sheets and the like can be obtained.

As shown in FIGS. 1 and 2, the absorbent article 50 of the present embodiment comprises a liquid permeable top sheet 10 positioned on the skin side and a liquid permeable top sheet 10 positioned opposite the top sheet 10 and positioned on the non-skin side. An impermeable back sheet 30, an absorbent body 20 arranged between the top sheet 10 and the back sheet 30, and a pair of three-dimensional gathers 40 provided at both ends in the width direction of the skin-side surface of the top sheet 10. , a pair of liquid-impermeable side sheets 60 provided at both longitudinal ends of the skin-side surface of the top sheet 10, and an individual packaging sheet 70 provided on the non-skin-side surface of the back sheet 30. The individual wrapping sheet 70 includes a first individual wrapping sheet 71 and a second individual wrapping sheet 72. The first individual wrapping sheet 71 is attached to the non-skin of the back sheet 30 via the first adhesive layer 80. The second individual packaging sheet 72 is adhered to the non-skin side surface of the first individual packaging sheet 70 via the second adhesive layer 81, and the first individual packaging sheet 71 and the second individual packaging sheet 72 are adhered to the side surface. The individual packaging sheet 72 has a first release layer 85 and a second release layer 86 formed by applying a release agent on each skin side surface, and the first individual packaging sheet 71 has an antibacterial activity of 2.0 or more. is a nonwoven fabric containing antibacterial fibers. On the skin-side surface of the absorbent article 50, imaginary folding lines 61 and 62 extending in the width direction and arranged in the longitudinal direction are set, which are used when the absorbent article 50 is folded into a product. It is Commercialization of the absorbent article 50 will be described later.

According to this embodiment, as shown in FIG. 3, while the used absorbent article 50a is still attached to the underwear 90, the skin-side surface of the used absorbent article 50a is exposed by removing the second individual wrapping sheet 72. After attaching the new absorbent article 50b with the adhesive layer 81 (FIG. 3(a)), the laminate of the used absorbent article 50a and the new absorbent article 50b is removed from the underwear 90, and the laminate is used. The used absorbent article 50a is folded inward (Fig. 3(b)), and then the new absorbent article 50b is separated at the boundary between the first individual wrapping sheet 71 and the first adhesive layer 80 (Fig. 3(b)). 3(c)), further wrapping the folded used absorbent article 50a with the second adhesive layer 81 and the first individual packaging sheet 71, which are part of the new absorbent article 50b, while By attaching a new absorbent article 50b in which only the first adhesive layer 80 remains to the underwear 90 with the first adhesive layer 80 (FIG. 3(d)), the used absorbent article 50a becomes a new absorbent article. 50b is replaced.

That is, according to this embodiment, as shown in FIG. 3, first, the absorbent article 50b is attached to the absorbent article 50a attached to the underwear 90 via the second adhesive layer 81. Since the laminate is held with both hands, the absorbent article 50b can be reliably prevented from falling, and there is no need to attach the absorbent article 50b to the wall of the toilet room where the sanitary condition is unknown when the user is outside. The absorbent article 50a can be easily removed from the undergarment 90 as a laminate with the absorbent article 50b using both hands. Secondly, the laminate includes only the absorbent article 50a wrapped with the first individual packaging sheet 71 via the second adhesive layer 81 and the first adhesive layer 80 of the individual packaging sheet 70. The absorbent article 50b can be easily separated from the remaining absorbent article 50b. Since the individual packaging sheet 71 can be used to fully wrap the individual packaging sheet 71 for disposal, the concealability can be remarkably enhanced. Third, of the first individual packaging sheet 71 and the second individual packaging sheet 72, at least the first individual packaging sheet 71 is composed of a nonwoven fabric containing antibacterial fibers with an antibacterial activity of 2.0 or more, thereby absorbing Therefore, the replacement work of the functional article 50 can be hygienically performed.

The absorbent article 50 of the present embodiment has the top sheet 10, the absorbent body 20, the back sheet 30, and the individual wrapping sheet 70 as basic structural units, and includes, for example, the three-dimensional gathers 40 and the side sheets 60 as described above, and the top sheet. Various known modifications can be made, such as placing a second sheet or a transfer sheet (not shown) between the sheet 10 and the absorbent body 20 and covering the absorbent body 20 with a carrier sheet (not shown). Hereinafter, the constituent members of the absorbent article 50 of this embodiment will be described in more detail in the order of the top sheet 10, the absorbent body 20, the back sheet 30, the three-dimensional gathers 40, the side sheets 60, and the individual packaging sheet 70.

<Top sheet>
The top sheet 10 is a liquid-permeable sheet-like base material that allows bodily fluids to pass quickly toward the absorbent body 20 and diffuse the bodily fluids in the surface direction of the absorbent body 20 . The topsheet 10 is preferably made of a base material that is soft to the touch and non-irritating to the wearer's skin so that it may be in direct contact with the wearer's skin. Examples of the substrate include a hydrophilic sheet, a composite nonwoven fabric which is a laminate of hydrophilic sheets of the same or different types, an open film such as an open polyethylene film, and a foamed film such as a polyethylene foam and a urethane foam. Hydrophilic sheets include, for example, synthetic fibers made of synthetic resins such as polypropylene and polyethylene, regenerated fibers such as rayon, and natural fibers such as cotton. A spunbond nonwoven fabric etc. are mentioned. Among these, each nonwoven fabric is preferable.

The surface of the top sheet 10 may be embossed or perforated from the viewpoint of improving liquid permeability. From the viewpoint of reducing irritation to the skin, the top sheet 10 may contain one or more of lotions, antioxidants, anti-inflammatory ingredients, pH adjusters, antibacterial agents, moisturizers, and the like. The basis weight of the top sheet 10 is, for example, in the range of 15 g/m ² or more and 40 g/m ² or less, or in the range of 19 g/m ² or more and 35 g/m ² or less, from the viewpoint of strength, workability, and liquid return amount. . The shape of the top sheet 10 is not particularly limited as long as it covers part or all of the absorbent body 20 required to guide body fluids to the absorbent body 20 without leakage.

<Absorber>
The absorber 20 has a longitudinal dimension (maximum length) of, for example, 100 mm or more and 800 mm or less, 150 mm or more and 500 mm or less, or 270 mm or more and 500 mm or less. The widthwise dimension (maximum width) of the absorbent body 20 is, for example, in the range of 50 mm or more and 500 mm or less, 60 mm or more and 400 mm or less, or 70 mm or more and 105 mm or less. In addition, when the absorbent body 20 has an hourglass shape in plan view, the longitudinal dimension is in the range of 180 mm or more and 800 mm or less, and the width dimension of the front part and the rear part, which contact the wearer's abdomen and back, respectively, is 60 mm or more. It is in the range of 400 mm or less, and the width direction dimension of the central portion that contacts the crotch portion of the wearer is in the range of 90 mm or more and 250 mm or less. Examples of the planar shape of the absorber 20 include an hourglass shape, an I shape, a rectangle, a square with rounded corners, and an ellipse.
The absorbent body 20 includes, for example, a fluff absorbent body containing absorbent fibers and a superabsorbent polymer.

(absorbent fiber)
Absorbent fibers are not particularly limited as long as they are generally used in absorbent articles such as sanitary napkins, paper diapers, and incontinence pads. Examples include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, hydrophilic nonwoven fabrics and the like. Among these, fluff pulp is preferably used from the viewpoint of absorbability. Examples of fluff pulp include wood pulp (for example, bleached softwood kraft pulp (N-BKP) such as southern pine and Douglas fir), synthetic fiber, resin fiber, non-wood pulp, etc., which are defibrated into cotton. can. When fluff pulp is used as the absorbent fiber as the base material of the absorbent body 20, the basis weight of the absorbent fiber is, for example, 100 g/m ² or more and 800 g/m ² or less from the viewpoint of the touch and body fluid absorption amount. range of 325 g/m ² or more and 615 g/m ² or less.

(super absorbent polymer)
The superabsorbent polymer (hereinafter also referred to as "SAP") is not particularly limited as long as it can absorb body fluids and prevent backflow, and polyacrylates, polyaspartates, (starch-acrylic acid ) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers and saponified products thereof. Among these, polyacrylates are preferred, alkali metal polyacrylates are more preferred, and sodium polyacrylate is even more preferred, from the viewpoint of absorption per weight. A superabsorbent polymer can be used individually by 1 type or in combination of 2 or more types.

The superabsorbent polymer is used, for example, in the form of particles, fibers, etc., but is preferably used in the form of particles from the viewpoint of ease of handling. At this time, by avoiding the use of a fine powder superabsorbent polymer with poor fluidity as a powder and using a superabsorbent polymer having a medium particle size, the basic performance related to absorption is improved, and the absorbent body 20 It is possible to reduce the rugged feel caused by hardening after absorbing body fluids. The median particle size of the superabsorbent polymer 12 is, for example, in the range of 50 μm or more and 600 μm or less or in the range of 100 μm or more and 500 μm or less. The content of the superabsorbent polymer in the absorbent body 20 is in the range of 40% by weight or more, or in the range of 40% by weight or more and 70% by weight or less of the total weight of the absorbent body 20 .

In the absorbent body 20, the absorbent fibers and the SAP may be formed by mixing SAP particles in the absorbent fibers, or may be an SAP sheet in which the SAP particles are fixed between the absorbent fibers. Absorbent sheets containing a plurality of hydrophilic sheets and a superabsorbent polymer fixedly supported therebetween can also be used as the absorbent body 20 other than the fluff absorbent body described above. From the viewpoint of preventing leakage of SAP particles from the absorbent body 20 and stabilizing the shape of the absorbent body 20, a carrier sheet may be provided under the absorbent body 20 or so as to entirely wrap the absorbent body 20 (not shown). The base material of the carrier sheet may be any material as long as it is hydrophilic, and examples thereof include hydrophilic nonwoven fabrics such as tissues, absorbent papers, and air-laid nonwoven fabrics. When a plurality of carrier sheets are provided, the substrates of the plurality of carrier sheets may be the same or different.

<Back seat>
The back sheet 30 may be formed using a liquid-impermeable base material that does not allow body fluids held by the absorbent sheet 20 to wet the clothes of the wearer. A film, a composite sheet which is a laminate of a resin film and a nonwoven fabric, and the like can be mentioned. The nonwoven fabric used for the composite sheet is not particularly limited in manufacturing method, and examples include single-layer nonwoven fabrics such as spunbond nonwoven fabrics and meltblown nonwoven fabrics, spunbond nonwoven fabric/meltblown nonwoven fabric laminates, spunbond nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric laminates. Composite nonwoven fabrics such as bodies, composite materials thereof, and the like. Examples of resin films include polyester, polyvinyl alcohol, polyethylene, polypropylene, composite films of polyethylene and polypropylene, and the like.

The basis weight of the backsheet 30 is, for example, in the range of 15 g/m ² or more and 60 g/m ² or less from the viewpoint of strength and workability. In addition, it is preferable that the back sheet 30 has air permeability in order to prevent stuffiness during wearing. In order to make the back sheet 30 air-permeable, for example, a filler may be added to the base resin film, or the back sheet 30 may be embossed. Calcium carbonate can be used as a filler, and a known method can be used without limitation as a method for blending the filler.

<Three-dimensional gather>
For example, the three-dimensional gathers 40 extend in the longitudinal direction of the absorbent article 50 at both widthwise ends of the skin-side surface of the top sheet 10 in order to prevent sideways leakage of bodily fluid excreted by the wearer of the absorbent article 50. You may provide so that it may extend along. The three-dimensional gathers 40 include an elastic stretchable member 40a and a water-repellent and/or waterproof sheet member 40b.

The elastic stretchable member 40a is arranged in the vicinity of the free end (the other end) of the sheet member 40b along the longitudinal direction, and provides the free end with uprightness so that the free end of the sheet member 40b and its neighboring area can be used by the wearer. Make it deformable according to the body shape of. In the present embodiment, the sheet member 40b has one widthwise end (fixed end) fixed near both widthwise ends of the skin side surface of the back sheet 30, and a widthwise intermediate portion fixed near both widthwise ends of the skin side surface of the top sheet 10. and the other end in the width direction is a free end having an upright property. The fixing position of the fixed end (one end in the width direction) of the sheet member 40b is not limited to this embodiment. all or part of each edge of the joined body, near both width direction ends of the skin side or non-skin side of the joined body, near both width direction ends of the skin side of the top sheet 10, and the like.

The sheet member 40b is a water-repellent and/or waterproof sheet, and is made of, for example, non-woven fabric. As the nonwoven fabric for the first sheet member, a water-repellent and/or waterproof (liquid-impermeable) nonwoven fabric made of hydrophobic fibers can be used without particular limitation. Composite nonwoven fabrics (SMS nonwoven fabrics), which are nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric laminates, and the like can be mentioned. The basis weight of the sheet member 40b is, for example, in the range of 13 g/m ² or more and 20 g/m ² or less. As the elastic stretchable member 40a, for example, a string-like, string-like, or belt-like member made of natural rubber, synthetic rubber, polyurethane, or the like can be used as appropriate.

<Side seat>
The side sheet 60 makes it easier for the second adhesive layer 81 to adhere, for example, when the second adhesive layer 81 is attached to the top sheet 10 after use of the absorbent article 50 to be described later, and the second adhesive layer 81 is wrapped and discarded. In order to more reliably prevent the new absorbent article 50 for replacement from falling, it may be provided so as to extend in the width direction of the absorbent article 50 at both longitudinal ends of the skin-side surface of the top sheet 10 . That is, a pair of liquid-impermeable side sheets 60 may be provided at both ends in the longitudinal direction of the skin-side surface of the top sheet 10 . As the material of the side sheet 60, the same liquid-impermeable nonwoven fabric or resin film as used for the back sheet 30 can be used without particular limitation. The side sheets 60 are provided, for example, so as to cover both ends of the top sheet 10 in the longitudinal direction along the shape thereof, and the longitudinal dimensions of one side and the other side are, for example, in the range of 10 mm or more and 30 mm or less.

<Individual packaging sheet>
The individual wrapping sheet 70 is provided on the non-skin side surface of the back sheet 30 . As shown in FIGS. 2 and 3, the individual packaging sheet 70 includes, in order from the wearer's skin side of the absorbent article 50, a first adhesive layer 80, a first release layer 85, and a first individual packaging sheet 71. , a second adhesive layer 81, a second peeling layer 86, and a second individual packaging sheet 72, which are sequentially laminated. The first adhesive layer 80 is used, for example, to adhere and fix the entire individual packaging sheet 70 to the non-skin side surface of the back sheet 30 . The first individual wrapping sheet 71 and the second adhesive layer 81 are used, for example, to wrap and conceal the used absorbent article 50 when replacing it with a new absorbent article 50 . The second individual packaging sheet 72 is used, for example, to protect the second adhesive layer 81 and is peeled off when the absorbent article 50 is worn. Since the first individual wrapping sheet 71 is used as a packaging material for wrapping the used absorbent article 50, it is wider than the body portion of the absorbent article 50 excluding the individual wrapping sheet 70. The used absorbent article 50 can be reliably wrapped with good concealability.

(First and second individual wrapping sheets)
The first individual packaging sheet 71 is a nonwoven fabric containing antibacterial fibers having an antibacterial activity of 2.0 or more (hereinafter also referred to as "antibacterial nonwoven fabric"), and the second individual packaging sheet 72 is a resin film, paper, or nonwoven fabric. , an antibacterial nonwoven fabric, or a laminate of two or more of these. By using an antibacterial nonwoven fabric for the first individual wrapping sheet 71 and, if necessary, the second individual wrapping sheet 72, the propagation of bacteria on the first individual wrapping sheet 71 and the second individual wrapping sheet 72 is prevented. Since this is prevented, it is possible to reduce the generation of odors associated with the propagation of various germs, and the work of replacing the absorbent article 50 can be performed hygienically and safely. In a preferred embodiment, a resin film, paper, or antibacterial nonwoven fabric is used for the second individual packaging sheet 72 . The basis weight of the antibacterial nonwoven fabric, which is the first individual wrapping sheet 71, is in the range of, for example, 15 g/m ² or more and 50 g/m ² or less from the viewpoint of strength and workability. From the viewpoint of strength and workability, the basis weight of the second individual packaging sheet 72 is, for example, in the range of 15 g/m ² or more and 50 g/m ² or less when it is a resin film, nonwoven fabric, or antibacterial nonwoven fabric. is, for example, in the range of 30 g/m ² or more and 70 g/m ² or less.

The antibacterial nonwoven fabric used for the first individual packaging sheet 71 and sometimes used for the second individual packaging sheet 72 includes, for example, an antibacterial fiber having an antibacterial activity of 2.0 or more as a main component and other and nonwoven fabrics made of antibacterial fibers having an antibacterial activity of 2.0 or more. "Containing as a main component" means containing more than 50% by weight of the whole. Examples of fibers that can be contained in addition to the antibacterial fibers include synthetic fibers made of synthetic resins such as polypropylene and polyethylene, regenerated fibers such as rayon, and natural fibers such as cotton.

The antibacterial fiber is not particularly limited as long as it is a fiber having antibacterial properties, but it is preferable to use a fiber obtained by kneading an inorganic antibacterial agent into a synthetic fiber. As the inorganic antibacterial agent, inorganic compounds containing antibacterial metal ions such as silver, copper, and zinc can be used without particular limitation. Inorganic porous materials such as hydroxyapatite, clay minerals, alumina, silica, and bentonite are included. An inorganic antibacterial agent can be used individually by 1 type or in combination of 2 or more types. The antibacterial fiber can be produced, for example, by adding one or more inorganic antibacterial agents to a synthetic resin in a molten state, kneading the mixture, and then spinning the synthetic resin. Here, examples of synthetic resins to be blended with inorganic antibacterial agents include polyester resins such as polyester and polyethylene terephthalate, polyolefin resins such as polyethylene and polypropylene, polyacrylamide, polyvinyl alcohol, crosslinked polyvinyl alcohol, ethylene vinyl acetate copolymer, Polyvinyl formal etc. are mentioned. The amount of the inorganic antibacterial agent to be blended with the synthetic resin is, for example, 100 wt. % in the range of 0.005% by weight or more and 0.5% by weight or less.

In this embodiment, an antibacterial test was performed using Staphylococcus aureus and Escherichia coli according to the JIS L 1902 fungal liquid absorption method, and a standard cloth (cotton cloth) was used as a control, and the obtained antibacterial activity value was 2.0. The above antibacterial fibers are used. Here, the antibacterial activity value is measured according to the JISL1902 bacterial liquid absorption method.

(adhesive layer)
Both the first adhesive layer 80 and the second adhesive layer 81 contain an adhesive that exhibits adhesiveness to a resin film, paper, non-woven fabric, or the like. The adhesive contained in the first adhesive layer 80 and the second adhesive layer 81 is not particularly limited, and known adhesives can be used. Examples thereof include hot-melt adhesives. As the hot-melt adhesive, those having a melting point of 100° C. or higher and 180° C. or lower can be used without particular limitation. Examples include hot-melt adhesives, olefin-based hot-melt adhesives such as ethylene-vinyl acetate copolymers, and the like. As a method for applying the hot-melt adhesive to the skin-side surfaces of the first individual packaging sheet 71 and the second individual packaging sheet 72, a curtain that applies the hot-melt adhesive in a molten state from a nozzle in a non-contact manner. Known methods such as a coating method, a spiral method, and a slot method for contact coating can be used. The same adhesive or different adhesives may be used for the first adhesive layer 80 and the second adhesive layer 81 . Double-sided tape or the like can also be used for the first adhesive layer 80 and the second adhesive layer 81 .

As a preferred embodiment, the basis weight of the adhesive in the first adhesive layer 80 is higher than the basis weight of the adhesive in the second adhesive layer 81, and the adhesive in the first adhesive layer 80 is Examples include an embodiment in which the adhesive strength of the second adhesive layer 81 is stronger than that of the adhesive, an embodiment in which the area of the first adhesive layer 80 is larger than that of the second adhesive layer 81, and the like. According to these embodiments, it is possible to prevent the first individual wrapping sheet 71 from being erroneously peeled off when the second individual wrapping sheet 72 is peeled off.

(Release layer)
In this embodiment, a release agent is applied to the skin-side surfaces of the first individual wrapping sheet 71 and the second individual wrapping sheet 72 . More specifically, a first release layer 85, which is a thin layer containing a release agent (or a release agent), is provided on each skin-side surface of the first individual packaging sheet 71 and the second individual packaging sheet 72, and A second release layer 86 is formed. The first release layer 85 and the second release layer 86 may be provided on the entire surface of each skin side surface, may be provided on a part of the surface, or may be provided so as to be scattered. According to this embodiment, the first individual wrapping sheet 71 and the second individual wrapping sheet 72 can be easily peeled off, and the work of replacing the absorbent article 50 can be easily performed. Examples of the release agent include, but are not particularly limited to, silicone-based release agents, fluorine-based release agents, and the like. Also, the total area of the first release layer 85 on the skin side surface of the first individual packaging sheet 71 is made smaller than the total area of the second release layer 86 on the skin side surface of the second individual packaging sheet 72. Thus, it is possible to prevent the first individual wrapping sheet 71 from being erroneously peeled off when the second individual wrapping sheet 72 is peeled off.

FIG. 3 is a schematic cross-sectional view showing an example of a replacement method for replacing a used absorbent article 50a with a new absorbent article 50b. The replacement method shown in FIG. 3 includes a first step (FIG. 3(a)), a second step (FIG. 3(b)), a third step (FIG. 3(c)), and a fourth step. (FIG. 3(d)), and are carried out in this order. In addition, in FIGS. 3(b) to 3(d), each body portion of the absorbent articles 50a and 50b excluding the individual wrapping sheet 70 is abbreviated as one layer, and the first peeling layer 85 and the second peeling The illustration of layer 86 is partially omitted.

In the first step shown in FIG. 3( a ), after peeling off the second individual wrapping sheet 72 of the new absorbent article 50 b to expose the second adhesive layer 81 , the used underwear 90 is adhered to the underwear 90 . A new absorbent article 50b is attached to the skin-side surface of the absorbent article 50a via the exposed second adhesive layer 81, and a laminate of the absorbent article 50b and the absorbent article 50a (hereinafter simply "laminate ). By removing this laminate from the undergarment 90 using both hands (not shown), there is no need to adhere the new absorbent article 50b to the wearer's body, the wall surface of the toilet cubicle, or the like. Since a second release layer 86 is formed between the second individual packaging sheet 72 and the second adhesive layer 81, a slight force is applied to the end of the second individual packaging sheet 72. Only the second individual wrapping sheet 72 can be easily peeled off by pulling.

In the second step shown in FIG. 3(b), the laminate obtained in the first step is folded in two so that the used absorbent article 50a faces inside. At this time, the folding direction may be either the longitudinal direction or the width direction, but from the viewpoint of ease of folding, it is preferable to fold in the longitudinal direction.

In the third step shown in FIG. 3(c), the two-fold laminate obtained in the second step is used to form a new absorbent article 50b while maintaining the two-fold state of the used absorbent article 50a. At the interface (first release layer 85) between the first individual packaging sheet 71 and the first adhesive layer 80, the first individual packaging sheet is gradually separated using both hands, and the second adhesive layer 81 is interposed between the first individual packaging sheets. A used absorbent article 50a wrapped in two at 71, a new absorbent article 50b in which only the first adhesive layer 80 of the individual packaging sheet 70 remains on the non-skin side surface of the back sheet 30, get By making the first individual wrapping sheet 71 wider than the body portion of the absorbent article 50b excluding the individual wrapping sheet 70, the used absorbent article 50a can be securely wrapped.

In the fourth step shown in FIG. 3(d), the new absorbent article 50b obtained in the third step, in which only the first adhesive layer 80 remains on the non-skin side surface of the back sheet 30, is transferred to the first The used absorbent article 50a is attached to the underwear 90 by the adhesive layer 80, and the used absorbent article 50a wrapped in two with the first individual wrapping sheet 71 with good concealability obtained in the third step is discarded in a trash can or the like, The replacement work is finished.

Thus, according to the present embodiment, both hands are not blocked during the replacement work, there is no need to attach the new absorbent article 50b to the wall surface, etc., and there is no danger of falling on the floor, which is hygienic. The replacement work can be performed easily and safely.

<Method for manufacturing absorbent article>
The absorbent article 50 can be manufactured by a known manufacturing method. A step of fixing a portion or the entire circumference using a hot-melt adhesive, heat embossing, ultrasonic embossing, high-frequency embossing, etc.; and a step of disposing a pair of side sheets 60 as necessary, and a step of adhering the individual packaging sheet 70 to the non-skin side surface of the back sheet 30 with the first adhesive layer 80. mentioned. The absorbent article 50 is appropriately provided with leg gathers, waist gathers, side flaps, and the like as necessary. The absorbent article 50 obtained in this manner is folded and housed in an individual package made of a resin film or the like as necessary to produce a product.

As shown in FIG. 1, the absorbent article 50 manufactured as described above has two folding lines (virtual lines) 61 and 62 extending in the width direction at predetermined positions in the longitudinal direction. A region 50B is defined between the folding line 61 and one longitudinal end on the side closest thereto, and a region 50A is defined between the folding line 62 and the other longitudinal end on the side closest thereto. When manufacturing the absorbent article 50, as shown in FIG. 4, the regions 50A and 50B are each folded toward the skin-side surface of the top sheet 10 to obtain a folded body of the absorbent article 50, and the folded body is It is wrapped with a resin film 55 . The folded body is wrapped with the resin film 55, for example, by folding the resin film 55 in the longitudinal direction, and then attaching the tape (for example, tag tape) 87 to the end of the resin film 55 on the outer peripheral side and the resin film 55 on the inner peripheral side. By sealing and sealing both ends in the width direction by heat sealing, ultrasonic sealing, or the like to form a sealed portion 55a, the folded body of the absorbent article 50 is wrapped with the resin film 55, and the product, which is an individual package. 51 is obtained. When the seal 87 of the product 51 is opened and the absorbent article 50 is taken out, the used absorbent article 50 covered with the first individual wrapping sheet 71 and the second adhesive layer 81 is folded in two and stored. Concealability can be further enhanced and discarded.

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

REFERENCE SIGNS LIST 10 top sheet 20 absorber 30 back sheet 40 three-dimensional gather 40a elastic stretchable member 40b sheet member 50, 50a, 50b absorbent article 51 product (individual package)
55 Resin film 55a Seal part 60 Side sheet 61, 62 Folding line 70 Individual packaging sheet 71 First individual packaging sheet 72 Second individual packaging sheet 80 First adhesive layer 81 Second adhesive layer 85 First release layer 86 second release layer 87 tape 90 underwear

Claims (4)

An absorbent article comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, and an absorbent body disposed between the topsheet and the backsheet,
Having an individual packaging sheet arranged on the non-skin side of the back sheet,
The individual packaging sheet includes a first individual packaging sheet and a second individual packaging sheet,
The first individual packaging sheet is adhered to the non-skin side surface of the back sheet via a first adhesive layer,
The second individual packaging sheet is adhered to the non-skin side surface of the first individual packaging sheet via a second adhesive layer,
The first individual packaging sheet and the second individual packaging sheet are each coated with a release agent on the skin side surface,
The absorbent article, wherein at least the first individual wrapping sheet is a nonwoven fabric containing antibacterial fibers having an antibacterial activity of 2.0 or more. 2. The absorbent article according to claim 1, further comprising a pair of liquid-impermeable side sheets on both longitudinal ends of said absorbent article on the skin-side surface of said top sheet. The second individual packaging sheet according to claim 1 or 2, wherein the second individual packaging sheet is a resin film, paper, nonwoven fabric, nonwoven fabric containing antibacterial fibers having an antibacterial activity of 2.0 or more, or a laminate of two or more of these. absorbent article. The absorbent article according to any one of claims 1 to 3, wherein the release agent is a silicone-based release agent or a fluorine-based release agent.

Images