Absorbent articles

Abstract

To provide an individually packaged absorbent article that makes it possible, in the case of replacement with the individually packaged absorbent article, to perform sanitary and easy fitting work, makes it easy to dispose of a used absorbent article, and has a concealment property.SOLUTION: There is provided an absorbent article comprising: a liquid permeable top sheet; a liquid impermeable back sheet; an absorber between the top sheet and the back sheet; and an individually packaged sheet on a non-skin abutment surface side of the back sheet. The individually packaged sheet includes a first individually packaged sheet and a second individually packaged sheet. The first individually packaged sheet is made to adhere to the non-skin abutment surface side of the back sheet via a first adhesive layer. The second individually packaged sheet is made to adhere to a non-skin abutment surface side of the first individually packaged sheet via a second adhesive layer. Both of the first individually packaged sheet and the second individually packaged sheet have a skin abutment surface side on which a remover is applied.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an absorbent article provided with an individually wrapped sheet. [Background technology]

[0002] Generally, absorbent articles are composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet. In the case of light incontinence products in particular, the back sheet side is fixed to underwear when used.

[0003] However, the task of removing an absorbent article from an undergarment must be performed with both hands, which makes the task difficult when the individual package of the new absorbent article is being held. In addition, when replacing an absorbent article, many people wrap the used absorbent article in the individual packaging of a new absorbent article and throw it away. Since the individual packaging of a new absorbent article is used at that time, there may be no place to put the new absorbent article until the individual packaging is peeled off from the absorbent article and the used absorbent article is wrapped and thrown away. Even if there is a stand in the toilet stall, it is troublesome that the slip prevention tape sticks, and placing it with the skin side down is unhygienic. For this reason, people temporarily stick it to their own body or gently place it on their lap so that it does not fall, but in that case, there is a possibility that the adhesive power of the slip prevention tape will weaken or that it will slide down to the floor when they move.

[0004] Some people wrap used absorbent articles in toilet paper instead of wrapping them individually, but rolled up absorbent articles tend to open up more easily than if they were individually wrapped, which can be unpleasant for cleaners and the next person to use them. Also, wrapping absorbent articles in toilet paper multiple times to prevent them from opening up increases their bulk, making them more likely to fill up trash cans.

[0005] As a prior art of absorbent articles for solving such problems, for example, Patent Document 1 discloses a package for absorbent articles, which includes a package sheet for individually packaging absorbent articles, and an adhesive tape having one end releasably attached to the surface of the package sheet and the other end joined to the end in the longitudinal direction of the package sheet, the adhesive tape being configured such that a first adhesive layer, a first substrate, a second adhesive layer, and a second substrate are laminated in this order, the first adhesive layer is configured to abut against the non-opposing surface of the package sheet, a connecting portion is provided to connect the first substrate and the second substrate, the second adhesive layer is joined to the second substrate and releasably attached to the first substrate, and the second substrate and the second adhesive layer are configured to peel from the first substrate and be folded back from the connecting portion to expose the second adhesive layer. This invention proposes that the package for absorbent articles can be attached to the wall of a toilet or the body of a wearer via the second adhesive layer of the package for absorbent articles, and the work of wearing the absorbent article can be easily performed using both hands. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2013-198586 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the absorbent article as disclosed in Patent Document 1, there is a risk that the absorbent article, whose packaging body is temporarily attached to a wall or the body, may fall off, and this does not provide a fundamental solution to the problem.

[0008] The present invention has been made in consideration of the above circumstances, and its object is to provide an individually packaged absorbent article that can be hygienically and easily put on and taken off when replacing an individually packaged absorbent article, that allows easy disposal of the used absorbent article, and that also has concealment properties. [Means for solving the problem]

[0009] After extensive research, the inventors discovered that by providing an individually packaged sheet on the non-skin contacting side of the back sheet, and further making the individually packaged sheet have a two-layer structure, it is possible to hygienically and easily put on and take off an individually packaged absorbent article when replacing it, it is also easy to dispose of used absorbent articles, and it is possible to produce individually packaged absorbent articles that also have concealment properties, thereby solving the above-mentioned problems and completing the present invention. Specifically, the present invention provides the following:

[0010] (1) A first aspect of the present invention is an absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body between the top sheet and the back sheet, and an individually packaged sheet on the non-skin contacting side of the back sheet, wherein the individually packaged sheet includes a first individually packaged sheet and a second individually packaged sheet, the first individually packaged sheet is adhered to the non-skin contacting side of the back sheet via a first adhesive layer, the second individually packaged sheet is adhered to the non-skin contacting side of the first individually packaged sheet via a second adhesive layer, and a release agent is applied to the skin contacting side of each of the first individually packaged sheet and the second individually packaged sheet. (2) A second aspect of the present invention is an absorbent article as described in (1), characterized in that a pair of liquid-impermeable side sheets are provided on the skin-contacting side of the top sheet and on both ends of the absorbent article in the longitudinal direction. (3) A third aspect of the present invention is an absorbent article according to (1) or (2), characterized in that the individually wrapped sheet is made of a film, paper, nonwoven fabric, or a laminate thereof. (4) A fourth aspect of the present invention is an absorbent article according to any one of (1) to (3), characterized in that the release agent is a silicone-based release agent or a fluorine-based release agent. Effect of the Invention

[0011] According to the present invention, it is possible to provide an individually packaged absorbent article which can be hygienically and easily put on when replacing the individually packaged absorbent article, which also allows easy disposal of the used absorbent article, and which has concealment properties. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a plan view of an absorbent article of the present invention. [Diagram 2] 2 is a cross-sectional view taken along line Y1-Y1 in FIG. [Diagram 3] 1A to 1C are diagrams showing the replacement process of the absorbent article of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the form for carrying out the present invention (hereinafter, the embodiment) will be described in detail with reference to the drawings. However, these are presented for the purpose of illustration only and are not intended to limit the present invention.

[0014] In the description of this specification, the longitudinal direction of the absorbent article 1 refers to the direction extending from the front to the back of the wearer when the absorbent article 1 is worn, and is the direction indicated by the symbol X in the drawings. The width direction of the absorbent article 1 refers to the direction horizontal to or perpendicular to the longitudinal direction, and is the direction indicated by the symbol Y in the drawings. Furthermore, the skin contact surface refers to the surface of each of the front and back surfaces of the absorbent article 1 that faces the skin of the wearer when worn, and the non-skin contact surface refers to the surface of each of the front and back surfaces of the absorbent article 1 that faces the opposite side to the skin of the wearer (underwear side) when worn. Furthermore, examples of the absorbent article 1 include light incontinence products and sanitary napkins in particular.

[0015] <Absorbent articles> Fig. 1 is a plan view of an absorbent article 1 according to an embodiment of the present invention, as viewed from the top sheet 10 side, and Fig. 2 is a cross-sectional view taken along line Y1-Y1 in Fig. 1. The absorbent article 1 of the present invention comprises a liquid-permeable top sheet 10 and a liquid-impermeable back sheet 20, an absorbent body 30 between the top sheet 10 and the back sheet 20, and an individually wrapped sheet 40 on the non-skin contact side of the back sheet 20. The absorbent article 1 preferably has a longitudinal dimension of 100 mm to 800 mm and a width dimension of 50 mm to 500 mm. By having each dimension within the above numerical ranges, an absorbent article 1 suitable for use as a light incontinence product or sanitary napkin can be obtained.

[0016] Furthermore, in order to prevent side leakage of bodily fluids excreted by the wearer, the absorbent article 1 may be provided with a pair of three-dimensional gathers 70 having elastic members for three-dimensional gathers on the top sheet 10 along the longitudinal direction of the absorbent article 1, as shown in Fig. 2. The three-dimensional gather sheet is arranged so that the outer ends of the three-dimensional gathers 70 in the width direction of the absorbent article 1 are fixed to the back sheet 20, the inner ends are fixed to the top sheet 10, and the centers are free ends that are not fixed to the top sheet 10. By providing the elastic members for three-dimensional gathers along the longitudinal direction, the three-dimensional gathers 70 have the ability to stand up and can be deformed to fit the body shape of the wearer. As the elastic member for the three-dimensional gathers, for example, a thermal bond nonwoven fabric, a spun bond nonwoven fabric, a polyethylene film, or a sheet obtained by combining and bonding these sheets can be used. From the viewpoint of strength and processability, the basis weight of the three-dimensional gathers 70 is set to 13 g / m 2 More than 20g / m 2 It is preferable that:

[0017] Furthermore, in order to facilitate attachment of the second adhesive layer 51 when the second adhesive layer 51 is attached to the top sheet 10 and wrapped and discarded after use of the absorbent article 1 described below, a pair of liquid-impermeable side sheets 60 are preferably provided on the skin contact side of the top sheet 10 and on both longitudinal ends of the absorbent article 1. The longitudinal dimension of each of the side sheets 60 is preferably 10 mm or more and 30 mm or less.

[0018] <Top sheet> The top sheet 10 may be formed from a substrate having liquid permeability that allows urine to move to the absorbent 30, and may be, for example, a known hydrophilic nonwoven fabric such as a thermal bonded nonwoven fabric or a spunbonded nonwoven fabric. The top sheet 10 may be embossed or perforated on the surface in order to improve liquid permeability. As a method for carrying out the embossing or perforation, any known method may be used without limitation. In order to reduce irritation to the skin, the top sheet 10 may contain lotion, antioxidant, anti-inflammatory component, pH adjuster, antibacterial agent, moisturizer, etc. From the viewpoints of strength, processability, and liquid return, the basis weight of the top sheet 10 is 15 g / m 2 More than 40g / m 2 It is preferable that the thickness is less than 19 g / m 2 More than 35g / m 2 It is more preferable that the shape of the top sheet 10 is as follows: There are no particular limitations on the shape of the top sheet 10, so long as it has a shape that covers the absorbent body 30 and is necessary to guide bodily fluids to the absorbent body 30 without leakage.

[0019] <Back sheet> The backsheet 20 may be formed using a liquid-impermeable substrate so that the body fluids held by the absorbent 30 do not wet clothing, and a plastic film such as a liquid-impermeable polyethylene film, which may be breathable or non-breathable, may be used.

[0020] From the viewpoint of strength and processability, the basis weight of the back sheet 20 is 15 g / m 2 More than 60g / m 2It is preferable that the thickness is less than 20 g / m 2 More than 40g / m 2 It is more preferable that the following is satisfied. In order to provide the back sheet 20 with breathability, for example, a filler may be blended into the resin film of the base material, or the back sheet 20 may be embossed. An example of the filler is calcium carbonate, and the blending method may be any known method without any restrictions.

[0021] <Absorbent> In the absorbent article 1 of the present invention, the maximum width dimension in the longitudinal direction of the absorbent body 30 is preferably 100 mm to 800 mm, and more preferably 150 mm to 500 mm. Also, the maximum width dimension in the width direction of the absorbent body 30 is preferably 50 mm to 500 mm, and more preferably 70 mm to 105 mm.

[0022] (Absorbent Fiber) The absorbent body 30 contains absorbent fibers as a base material and a superabsorbent polymer (SAP). The absorbent fibers are not particularly limited as long as they are generally used in absorbent articles such as sanitary napkins, paper diapers, and urine pads, and examples thereof include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, hydrophilic nonwoven fabric, etc. Among these, it is preferable to use fluff pulp from the viewpoint of absorbency. Examples of fluff pulp include wood pulp (for example, bleached coniferous kraft pulp (N-BKP) such as southern pine and Douglas fir), synthetic fibers, resin fibers, non-wood pulp, etc. that have been defibrated into a cotton-like state. When fluff pulp is used as the absorbent fiber as the base material for the absorbent body 30, the basis weight of the absorbent fiber is 100 g / m 2 More than 800g / m 2 Preferably, it is 325 g / m or less. 2 More than 615g / m 2 This allows the fabric to absorb a larger amount of body fluid without impairing the feel on the skin.

[0023] (Superabsorbent polymer) The highly absorbent polymer of the absorbent body 30 is not particularly limited as long as it can absorb body fluids and prevent backflow, and can be made of materials such as sodium polyacrylate, polyaspartate, (starch-acrylic acid) graft copolymer, (acrylic acid-vinyl alcohol) copolymer, (isobutylene-maleic anhydride) copolymer, and saponified materials thereof. Among these, sodium polyacrylate is preferred from the viewpoint of absorption per weight. Furthermore, in the absorbent body 30, the ratio of the weight of the superabsorbent polymer to the total weight of the absorbent body 30, that is, weight of superabsorbent polymer / weight of the total absorbent body 30 × 100 (%), is preferably 40% or more, and more preferably 40% or more and 70% or less.

[0024] In the absorbent body 30, the absorbent fibers and SAP may be in the form of a mixture of SAP particles in absorbent fibers, or may be in the form of a SAP sheet with SAP particles fixed between absorbent fibers. A carrier sheet (not shown) may be provided under the absorbent body 30 to prevent leakage of the SAP particles and to stabilize the shape of the absorbent body 30. The substrate of the carrier sheet may be any hydrophilic material, and examples of the substrate include tissue, absorbent paper, and hydrophilic nonwoven fabrics such as airlaid nonwoven fabrics. When multiple carrier sheets are provided, the substrates of the multiple carrier sheets may be the same or different.

[0025] <Individually wrapped sheets> In the absorbent article 1 of the present invention, an individual packaging sheet 40 is provided on the non-skin contacting surface side of the back sheet 20. The individual packaging sheet 40 includes a first individual packaging sheet 41 and a second individual packaging sheet 42, the first individual packaging sheet 41 being adhered to the non-skin contacting surface side of the back sheet 20 via a first adhesive layer 50, and the second individual packaging sheet 42 being adhered to the non-skin contacting surface side of the first individual packaging sheet 41 via a second adhesive layer 51. The replacement operation of the absorbent article 1 provided with such an individual packaging sheet 40 will be described below with reference to FIG. 3.

[0026] 3(a), a new absorbent article 1 is attached to the skin contact surface side of a used absorbent article 2 attached (bonded) to an undergarment 80. At this time, only the second individually packaged sheet 42 of the individually packaged sheet 40 of the new absorbent article 1 is peeled off, and the new absorbent article 1 is attached to the used absorbent article 2 via the second adhesive layer 51. Thereafter, the used absorbent article 2 is removed from the undergarment 80 with the new absorbent article 1 still attached.

[0027] Next, as shown in Fig. 3(b), the new absorbent article 1 and the used absorbent article 2 are both folded in half while still attached. At this time, the folding direction may be either the lengthwise direction or the widthwise direction, but from the viewpoint of ease of folding, it is preferable to fold in the lengthwise direction. 3(c), the first individual packaging sheet 41 of the new absorbent article 1 is peeled off, and the used absorbent article 2 is wrapped in the first individual packaging sheet 41. As a result, the used absorbent article 2 is folded while being wrapped in the first individual packaging sheet 41 of the new absorbent article 1, and the new absorbent article 1 is in a state in which the first adhesive layer 50 is exposed on the non-skin contact surface side of the back sheet 20.

[0028] Finally, as shown in FIG. 3(d), after the used absorbent article 2 and the new absorbent article 1 are separated, the used absorbent article 2 is discarded, and the new absorbent article 1 is worn by attaching the first adhesive layer 50 to underwear 80.

[0029] Thus, according to the individually packaged absorbent article 1 of the present invention, the individual packaging of a new absorbent article 1 having an adhesive layer can be attached directly onto the used absorbent article 2, and the two absorbent articles can be peeled off at the same time, making it easy to remove and attach. This eliminates the need to temporarily attach or place one of the absorbent articles, allowing for efficient work. In addition, since the individually packaged sheet 40 (second adhesive layer 51) of the absorbent article 1 is attached to the soiled surface (top sheet 10 side) of the absorbent article 2, it also has concealing properties, allowing for hygienic work when removing it.

[0030] It is preferable that the first individual packaging sheet 41 and the second individual packaging sheet 42 are both made of a film, paper, nonwoven fabric, or a laminate of these, and among these, a film or paper is more preferable. From the viewpoint of strength and processability, the basis weight of each of the first individual packaging sheet 41 and the second individual packaging sheet 42 is set to 15 g / m in the case of a film or nonwoven fabric. 2 More than 30g / m 2 For paper, 30 g / m 2 More than 70g / m 2 It is preferable that the temperature is about the same or less. In addition, a release agent is preferably applied to the skin contact surface of each of the first individual packaging sheet 41 and the second individual packaging sheet 42. By applying the release agent, the first individual packaging sheet 41 and the second individual packaging sheet 42 can be easily peeled off, facilitating the replacement work of the absorbent article 1. The release agent is preferably a silicone-based release agent or a fluorine-based release agent.

[0031] 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 described in the above embodiments and examples. It is clear to those skilled in the art that various modifications and improvements can be made to the above embodiments. In addition, it is clear from the description of the claims that forms with such modifications or improvements can also be included in the technical scope of the present invention. [Explanation of symbols]

[0032] 1, 2 Absorbent articles 10 Top sheet 20 Back Seat 30 Absorbent 40, 41, 42 Individually wrapped sheets 50, 51 Adhesive layer 60 Side seat 70 Three-dimensional gathers 80 Underwear

Claims

1. An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body between the top sheet and the back sheet, and an individual packaging sheet on a non-skin contact 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 a non-skin contact surface side of the back sheet via a first adhesive layer, the second individually packaged sheet is adhered to the non-skin contact surface side of the first individually packaged sheet only via a second adhesive layer, The first individual packaging sheet and the second individual packaging sheet are completely separable from each other, The first individual package sheet and the second individual package sheet each have a release agent applied to their skin contact surfaces, An absorbent article, characterized in that a pair of liquid-impermeable side sheets are provided on the skin contact surface side of the top sheet and on both ends in the longitudinal direction of the absorbent article.

2. 2. The absorbent article according to claim 1, wherein the individual wrapping sheet is a film, paper, nonwoven fabric, or a laminate thereof.

3. 3. The absorbent article according to claim 1, wherein the release agent is a silicone-based release agent or a fluorine-based release agent.

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