JP2017109039A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article capable of preventing an expanded fastening tape from being adhered again to an unintended part.SOLUTION: An absorbent article comprises a top sheet, a back sheet, and an absorber, in which the back sheet is a composite sheet formed by pasting a nonwoven fabric and a polyethylene sheet positioned on a clothing side surface. Two fastening tapes are provided on width direction side edge parts of free end sides of side panels, and in an expanded state, temporary fastening means for engaging or adhering to the nonwoven fabric in a peelable state is provided on the clothing side surface of each side panel.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an absorptive absorbent article that can prevent a developed fastening tape from reattaching to an unintended site.

  In general, there are tape type, urine pad, pants type, etc. in adult paper diapers, and these products are appropriately selected and used according to the need for care in excretion of the wearer Yes. Of these products, tape-fixed absorbent articles, represented by tape-locked paper diapers, fold the tape part, etc. for each product, and stack multiple articles that are folded in three in the longitudinal direction. They are stored in bags and packaged for sale.

  As such a tape-fixing type absorbent article, for example, Patent Document 1 discloses a fastening means in which the free ends of the side panels fixed to both sides of the side flaps of the back body fasten the back body and the front body. It is bent and fixed to the fixed end of the side panel so that it can be peeled off with a first adhesive strength, and the fixed end is attached to the side flap with a second adhesive strength so that the free end is on the inside. A deployable absorbent article is disclosed that is detachably folded and fixed and has a second adhesive strength greater than the first adhesive strength.

  Patent Document 2 discloses a paper diaper having a front body, a back body, and a fastener member that detachably engages the front body and the back body by fastening means, the fastener member having three folds. A paper diaper that is folded and provided with fastening means and a pinch at the end on the free end side from the third fold is disclosed.

  Patent Document 3 discloses an absorbent article having a side flap and a fastening tape provided at the front end thereof, and the fastening tape is folded by joining the joining surface to the skin side surface of the side flap. The side flaps are temporarily fixed in a state of being folded by the first fold line portion and the second fold line portion on the most distal side, and when viewed from the skin side, the first fold line portion is a mountain fold and the second fold line The absorbent article is disclosed in which the part is a valley fold, and the side flap front end and the fastening tape front end are located outside the first folding line with the side flap temporarily fixed. Has been.

JP 2004-298455 A JP 2013-146383 A Japanese Patent No. 5747139

  When using a tape-fixing type absorbent article such as the absorbent article described in Patent Documents 1 to 3, a consumer takes out one product from a storage bag and unfolds it so that the subject wears it. However, since the tape-type absorbent articles represented by the absorbent articles described in Patent Documents 1 to 3 are large-sized absorbent articles for adults, two fastening tapes are provided on each of the left and right sides. In addition, the fastening tape is folded a plurality of times and stored in a package or the like. For this reason, when the absorbent article is used, even if the plurality of fastening tapes are developed, the developed fastening tape may be reattached to an unintended portion due to folding of the fastening tape portion or the like. there were. Also, when replacing the absorbent article worn by the wearer, it is known that there is a problem that the fastening tape reattaches when the fastening tape is peeled off from the target tape provided in the front body. It was. Such a problem of reattachment of the fastening tape has become a major factor that complicates the work of wearing the absorbent article by the subject and the work of replacing the absorbent article.

  Therefore, the present invention is a tape fastening type absorbent article in which side panels are provided on the left and right sides of the back body, and two fastening tapes are arranged on the side edges in the width direction on the free ends of the side panels. An object of the present invention is to provide an absorbent article capable of preventing the tape from reattaching to an unintended site.

  The inventors of the present invention have intensively studied to solve the above problems. As a result, the back sheet of the absorbent article is a composite sheet in which the nonwoven fabric located on the garment side surface and the polyethylene sheet are bonded together, and can be peeled from the nonwoven fabric on the garment side surface of the side panel in the unfolded state. It has been found that the above-mentioned problems can be solved by providing temporary fixing means for engaging or adhering to the present invention, and the present invention has been solved. Specifically, the present invention provides the following.

  (1) A first aspect of the present invention includes a liquid-permeable top sheet that forms a body-side surface, a liquid-impermeable back sheet that forms a clothing-side surface, the top sheet, and the back sheet. And a front body, a back body, and a crotch portion positioned therebetween, and a pair of side flaps are formed on both sides in the width direction of the back body. In the absorbent article, the back sheet is a composite sheet obtained by laminating a nonwoven fabric located on the clothing side surface and a polyethylene sheet, and each side flap has a width direction side edge on the free end side. , Side panels are provided, and two fastening tapes are provided on the side edges in the width direction on the free end side of each of the side panels, and the two fastening tapes are arranged in the longitudinal direction of the absorbent article. Fastening means comprising a hook member constituting a hook-and-loop fastener for fastening the front body and the back body is provided on the body side surface of the fastening tape in the unfolded state. At the tip of each fastening tape on the free end side of the fastening means, a pinch is provided, and on the clothing side surface of the front body, a target tape to which the fastening means is fixed is provided, and the unfolded state In the above, the garment-side surface of the side panel is an absorbent article provided with temporary fixing means for releasably engaging or adhering to the nonwoven fabric.

  (2) A second aspect of the present invention is the absorbent article according to (1), wherein the absorbent article has a length in the longitudinal direction of 600 mm or more and 1000 mm or less, and a length in the width direction (left and right). The length between both side flap ends is 760 mm or more and 1380 mm or less.

  (3) A third aspect of the present invention is the absorbent article according to (1) or (2), wherein the temporary fixing means is a hook member constituting a surface fastener.

  (4) A fourth aspect of the present invention is the absorbent article according to (1) or (2), wherein the temporary fixing means is temporary fixing means using a hot melt adhesive. And

(5) A fifth aspect of the present invention is the absorbent article according to any one of (1) to (4), wherein the area of the temporary fixing means is 70 mm ² or more and 400 mm ² or less. Features.

  (6) A sixth aspect of the present invention is the absorbent article according to any one of (1) to (5), which is a disposable paper diaper.

  In the present invention, the back sheet of the absorbent article is composed of a composite sheet obtained by laminating a nonwoven fabric positioned on the clothing side surface and a polyethylene sheet, and in the deployed state, the composite sheet is placed on the clothing side surface of the side panel. Since the temporary fixing means for releasably engaging or adhering to the non-woven fabric constituting the fabric is provided, when the absorbent article is mounted on the wearer, the fastening tape is deployed with the side panel, or the absorbent article is replaced. For example, when the fastening tape is peeled off, the clothing side surface of the side panel on which the fastening tape is provided at one end may be engaged with or adhered to the back sheet surface so as to face the back sheet together with the fastening tape. it can. Therefore, it is possible to prevent the fastening tape from reattaching to an unintended position due to eclectic or the like.

It is drawing which shows the (a) body side surface and (b) clothing side surface of the absorbent article which concerns on embodiment of this invention. It is an enlarged view of a side panel and a fastening tape, (a) Drawing seen from the clothing side surface, (b) Drawing seen from the body side surface, (c) AA sectional view, and (d) BB It is sectional drawing. It is drawing explaining the method of temporarily fixing a fastening tape with a side panel when replacing | exchanging the absorbent article of this invention.

  With reference to FIGS. 1-3, the absorbent article which concerns on embodiment of this invention is demonstrated in detail. In the description of the embodiments, the same numbers are assigned to the same elements throughout. In the description of the present specification, the time when the absorbent article 1 is worn means at least one of the time when the absorbent article 1 is worn and after wearing. In addition, the longitudinal direction of the absorbent article 1 is a direction across the wearer's front and back that connects the front body 10A and the back body 10C when the absorbent article 1 is worn. It is. The width direction of the absorbent article 1 is a direction that is transverse or orthogonal to the longitudinal direction, and is a direction indicated by a symbol X in the figure. Furthermore, the body-side surface is a surface arranged on the skin side of the wearer at the time of wearing among the front and back surfaces of each member such as an absorber, and the clothing side surface is the front and back surfaces of each member such as a back sheet. Of these, the surface is directed to the opposite side of the wearer's skin when worn. The body fluid refers to fluid discharged from the body, such as urine, blood, and water in loose stool. Furthermore, the absorbent article 1 of the present invention is preferably a tape-type disposable diaper regardless of whether it is for infants or adults.

<Absorbent article>
FIG. 1 is a development view showing an absorbent article 1 according to an embodiment of the present invention, as viewed from the top sheet 21 side. As shown in FIG. 1, the absorbent article 1 is located between a front body 10A that covers the wearer's abdomen when worn, a back body 10C that covers the back of the wearer, and between the front body 10A and the back body 10C. The crotch part 10B is applied to the crotch part. A disposable paper diaper etc. are illustrated as an example of the absorbent article 1 of the present invention.

  As shown in FIG. 1, the absorbent article 1 includes a liquid-permeable top sheet 21 disposed on the body-side surface side, a liquid-impermeable back sheet 23 disposed facing the top sheet 21, And it is arrange | positioned between the top sheet | seat 21 and the back seat | sheet 23, and has the structure provided with the absorber 22 which absorbs a bodily fluid.

  The present invention is preferably applied to the absorbent article 1 having a length in the longitudinal direction of 600 mm or more and 1000 mm or less and a length in the width direction (the length between the left and right side flap end portions) of 760 mm or more and 1380 mm or less. . Since such an absorbent article 1 has a large dimension, the dimension of the fastening tape 26 is also long, and the fastening tape 26 is in an unintended position of the absorbent article 1 in a state where the fastening tape 26 is expanded or peeled off. It tends to re-adhere. For this reason, the present invention is particularly suitably applied to such a large absorbent article.

(Top sheet)
The top sheet 21 may be made of a base material having liquid permeability that allows body fluid to move to the absorbent body 22. For example, a nonwoven fabric such as a thermal bond nonwoven fabric or a composite nonwoven fabric in which a thermal bond nonwoven fabric / spun bond nonwoven fabric is laminated. It is formed from a material such as an opening film such as an opening polyethylene film, a foam film such as polyethylene foam or urethane foam, or a composite sheet obtained by laminating these films. The top sheet 21 is preferably embossed or perforated on the surface in order to improve liquid permeability, and the embossing or perforating can be performed by a conventionally known method. Furthermore, in order to reduce irritation to the skin of the top sheet 21, it is also preferable that the top sheet 21 contains a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizing agent and the like. The basis weight of the top sheet 21 is preferably 14 g / m ² or more and 40 g / m ² or less from the viewpoint of strength and workability. The shape of the top sheet 21 is not particularly limited, but may be any shape that covers the absorber 22 in order to guide the body fluid to the absorber 22 so that there is no leakage.

(Absorber)
The absorbent body 22 absorbs and retains body fluids, and contains, for example, flap pulp and a super absorbent polymer (hereinafter also referred to as SAP). The base material of the absorbent body 22 is not particularly limited as long as it is generally used for absorbent articles such as sanitary napkins, diapers, and urine absorbing pads. For example, fluff pulp, cotton, rayon, acetate, tissue, absorption It is formed from materials such as paper and hydrophilic nonwoven fabric. Among these, it is preferable to use fluff pulp from the viewpoint of absorbability. Examples of such fluff pulp include wood pulp, synthetic fiber, polymer fiber, non-wood pulp and the like that have been fibrillated into cotton. Further, the basis weight of the base material of the absorbent body 22 is preferably set to 100 g / m ² or more and 800 g / m ² or less in order to improve the absorption performance and the touch.

The SAP of the absorbent 22 is not particularly limited as long as it can absorb body fluid and prevent backflow. For example, sodium polyacrylate, polyaspartate, (starch-acrylic acid) ) Graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers and saponified products thereof. Among these, it is preferable to use a sodium polyacrylate system from the viewpoint of the amount of absorption per weight. The basis weight of SAP of the absorbent body 22 is preferably 50 g / m ² or more and 500 g / m ² or less from the viewpoint of improving the absorption performance and the touch.

  The absorber 22 preferably contains a base material and SAP, and the configuration is preferably a SAP sheet in which SAP particles are mixed in the base material, or an SAP sheet in which SAP particles are fixed between the base materials. . Moreover, it is preferable to wrap the absorber 22 in a carrier sheet from the viewpoint of preventing leakage of SAP particles and stabilizing the shape of the absorber 22. As a base material of a carrier sheet, what is necessary is just to have hydrophilicity, and hydrophilic nonwoven fabrics, such as tissue, an absorbent paper, an airlaid nonwoven fabric, can be mentioned. When the absorber 22 includes a plurality of carrier sheets, the base material of the carrier sheet may be the same or different.

  The shape of the absorber 22 is not particularly limited, and examples thereof include a rectangular shape, an hourglass shape, and an I-shape. The absorber 22 may be used by stacking two or more layers.

(Back sheet)
For the backsheet 23, a base material having liquid impermeability that can prevent the body fluid held by the absorbent body 22 from getting wet with clothing may be used. In the present invention, a polyethylene sheet and a nonwoven fabric are used. It is formed from a laminated composite sheet. In this case, it is preferable to arrange the composite sheet so that the nonwoven fabric is positioned on the clothing side surface. By forming the back sheet 23 from such a composite sheet, a temporary fixing means 30a provided on a side panel 25 described later can be releasably engaged or bonded to the surface of the back sheet 23.

  Here, the non-woven fabric that can be used for the composite sheet is not particularly limited in its production method. The composite nonwoven fabric which laminated | stacked the spun bond nonwoven fabric, and these composite materials can be mentioned.

The basis weight of the backsheet 23 is preferably 10 g / m ² or more and 40 g / m ² or less from the viewpoint of strength and workability. Moreover, in order to prevent the stuffiness at the time of mounting | wearing, it is preferable that the back seat | sheet 23 has air permeability. In order to provide the back sheet 23 with air permeability, for example, a filler may be added to the polyethylene film, or the back sheet 23 may be embossed. Here, examples of the filler include calcium carbonate, and a known method can be used without limitation as a processing method thereof.

  In the present invention, a liquid diffusive sheet may be provided on the clothing side surface side of the top sheet 21. In this case, the body fluid first diffuses sequentially through the top sheet 21 to the absorber 22 and is absorbed by the absorber 22. Here, after the body fluid is absorbed by the absorbent body 22, it is preferable that the body fluid is quickly diffused in the front, rear, left, and right directions. However, by providing a liquid diffusable sheet under the top sheet 21 to promote diffusion, It can move to the whole absorber 22 and can make it absorb efficiently.

The liquid diffusive sheet is a hydrophilic nonwoven fabric having a thickness of 0.1 mm or more and a basis weight of 18 g / m ² or more. For example, an air-through nonwoven fabric or a point bond nonwoven fabric made of a synthetic fiber such as polypropylene, polyethylene, or polyester. Spunbond nonwoven fabrics can be used. Among these, an air-through nonwoven fabric excellent in liquid return prevention performance is particularly preferable.

  Further, as shown in FIG. 1, the absorbent article 1 includes a three-dimensional gather having a three-dimensional gather elastic member 32 a, a leg gather having a leg gather elastic member 32 b, and a waist gather to improve the wearer's fit. A waist gather having the elastic member 32c for use may be provided. By having leg gathers and waist gathers, the leg openings and torso of the absorbent article 1 are stretched to enhance the fit when worn and prevent body fluid from leaking outside. Side leakage is prevented by having gathers.

(Side flaps and side panels)
At least a pair of side flaps 24 is formed on both sides in the width direction of the back body 10C of the absorbent article 1, and side panels 25 are formed on the side edges of the side flaps 24 in the width direction on the free end side. Two fastening tapes 26 are provided at the edge in the width direction on the free end side of the side panel 25. In the description of the present specification, the side panel 25 and the fastening tape 26 are described as separate members, but the side panel 25 and the fastening tape 26 are not limited to those formed by separate members. The two may be formed integrally. Here, the two fastening tapes 26 on one side panel 25 are spaced apart from each other along the longitudinal direction of the absorbent article 1, and the body-side surface (skin contact surface) of the fastening tape 26 in the unfolded state. Fastening means 30 comprising a hook member constituting a hook-and-loop fastener for fastening the front body 10A and the back body 10C is provided on the surface), and the front ends of the fastening tapes 26 on the free end side of the fastening means 30 Is provided with a knob 27. On the other hand, the surface of the back sheet 23, which is the clothing side surface of the front body 10A, is provided with a target tape 31 formed of a loop member constituting a hook-and-loop fastener, and in a state where the absorbent article 1 is attached to the wearer. The fastening means 30 is fixed to the target tape 31 which is a loop member. The hook member refers to a member that is three-dimensionally molded or raised in a hook shape among the members that constitute the hook-and-loop fastener, and the loop member is a member that forms a pair with the hook member, and is closely packed in a loop shape. It refers to a member that has been brushed. The hook-and-loop member is configured by a pair of the hook member and the loop member. When wearing the absorbent article 1, with the back body 10 </ b> C applied to the wearer's back, the front body 10 </ b> A is brought to the wearer's abdomen side and the fastening tape 26 is fastened to the target tape 31. Can be worn by the wearer.

  In addition, as a base material of the side flap 24, the nonwoven fabric which consists of polyethylene, polyolefin, a polystyrene, etc. can be mentioned, You may combine these base materials independently or multiple. Moreover, as a base material of the side panel 25 and the fastening tape 26, the resin film and nonwoven fabric which consist of polyethylene, polyolefin, polystyrene, etc. can be mentioned, You may combine these base materials independently or more than one.

  FIG. 2 is an enlarged view of the side panel 25 and the fastening tape 26, (a) a drawing seen from the clothing side surface, (b) a drawing seen from the body side surface, (c) a cross-sectional view taken along line AA, and (D) It is BB sectional drawing. FIG. 3 is a diagram illustrating a method for temporarily fixing the side panel 25 when the absorbent article 1 of the present invention is replaced. In the present invention, the temporary fastening means 30a is provided on the clothing side surface of the side panel 25 in the unfolded state of the absorbent article 1 so as to be releasably engaged with or adhered to the nonwoven fabric on the surface of the back sheet 23. (FIG. 2 (a)). By providing the temporary fixing means 30a, the fastening tape 26 unfolded when the absorbent article 1 is mounted and the fastening tape 26 peeled off from the target tape 31 when the absorbent article 1 is replaced together with the side panel 25 are backed. It can be temporarily fixed to the surface of the sheet 23 (FIG. 3), and the fastening means 30 of the fastening tape 26 can be prevented from reattaching to an unintended position of the absorbent article 1. Specifically, for example, when the absorbent article 1 is mounted, the absorbent article 1 is unfolded, the fastening tape 26 is unfolded, and then the temporary fixing means 30a of the side panel 25 can be attached to and detached from the backsheet 23. In this state, the back body 10C is applied to the wearer's back, the front body 10A is brought to the abdomen side of the wearer, and then the fastening tape 26 together with the side panel 25 is removed from the back sheet 23. By peeling and fastening the fastening tape 26 to the target tape 31, the wearer can wear it. Further, when the absorbent article 1 is replaced, every time the fastening tape 26 is peeled off from the target tape 31, the peeled fastening tape 26 may be engaged or adhered to the back sheet 23 together with the side panel 25 (see FIG. 3). By doing in this way, reattachment of the fastening tape 26 as shown by the arrow in FIG. 3 can be prevented.

  In the present invention, the temporary fixing means 30a may be a hook member constituting a hook-and-loop fastener, or a temporary fixing means using a hot melt adhesive. Here, when the temporary fixing means 30a using a hot melt adhesive is employed, the usable hot melt adhesive is not particularly limited as long as it is a hot melt adhesive generally used in absorbent articles. For example, SIS (styrene / isoprene / styrene block copolymer) hot melt adhesive, SBS (styrene / butadiene / styrene block copolymer) hot melt adhesive, SEBS (styrene / ethylene / butylene / styrene block copolymer) And coalesced) hot melt adhesives. Moreover, the application amount of the hot melt adhesive can be appropriately set as long as the side panel 25 can be attached to and detached from the back sheet 23 together with the fastening tape 26.

Even if a hook member is used as the temporary fixing means 30a or a temporary fixing means using a hot melt adhesive is used, the area of the temporary fixing means 30a is 70 mm ² or more and 400 mm ² or less. It is preferable that By setting the area of the temporary fixing means 30a as described above, the side panel 25 can be easily peeled off from the back sheet 23 while ensuring the temporary fixing of the side panel 25 to the back sheet 23. In addition, the temporary fixing means 30a of the side panel 25 can be prevented from adhering to an unintended part.

  The position of the temporary fixing means 30a on the side panel 25 is not particularly limited, and may be provided at a portion adjacent to the junction between the side panel 25 and the side flap 24 as shown in FIGS. Alternatively, it may be provided at a site adjacent to the boundary between the side panel 25 and the fastening tape 26.

<Method for producing absorbent article>
The manufacturing method of the absorbent article 1 is not particularly limited, and a conventionally known method can be adopted. For example, the absorbent body 22 is sandwiched between the top sheet 21 and the back sheet 23, and the side flaps are further sandwiched. 24, the side panel 25, the fastening tape 26, and the target tape 31, in addition to appropriately arranging a liquid diffusable sheet and a three-dimensional gather, the top sheet 21 and the back sheet 23 are partially or entirely covered with a hot melt adhesive or the like. It can manufacture by fixing using heat embossing, ultrasonic embossing, high frequency embossing, etc. The side panel 25 and the fastening tape 26 are previously bonded to the base material constituting the side panel 25 and the fastening means 30a, cut into a predetermined shape, and the fastening tape 26 is joined or integrally formed. It is preferable to join the side panel 25 to the absorbent article 1. In storing the absorbent article 1 in a package or the like, the fastening tape 26 is folded and detachably engaged with a predetermined position of the absorbent article 1, and the absorbent article 1 is folded in three in the longitudinal direction Y. Then fold it.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range of the invention as described in said embodiment, A various change or improvement to said embodiment. It will be apparent to those skilled in the art that Further, it is apparent from the scope of the claims that embodiments with such changes or improvements can also be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Absorbent article 10A Front body 10B Crotch part 10C Rear body 21 Top sheet 22 Absorber 23 Back sheet 24 Side flap 25 Side panel 26 Fastening tape 27 Tightening margin 30 Fastening means 30a Temporary fixing means 31 Target tape 32a Three-dimensional gather elastic member 32b Elastic member for leg gathers 32c Elastic member for waist gathers

Claims (6)

A liquid-permeable top sheet that forms the body-side surface, a liquid-impermeable back sheet that forms the clothing-side surface, and an absorbent body disposed between the top sheet and the back sheet,
An absorbent article having a front body, a back body, and a crotch portion positioned between them, and a pair of side flaps formed on both sides in the width direction of the back body,
The back sheet is a composite sheet obtained by laminating a nonwoven fabric located on the clothing side surface and a polyethylene sheet,
Each of the side flaps is provided with a side panel on the side edge in the width direction on the free end side,
Two fastening tapes are provided on the side edges of the side panels in the width direction on the free end side,
The two fastening tapes are spaced apart along the longitudinal direction of the absorbent article,
In the unfolded state, the body-side surface of the fastening tape is provided with fastening means comprising a hook member that constitutes a hook-and-loop fastener for fastening the front body and the back body, and on the free end side of the fastening means A pinch is provided at the tip of each fastening tape,
On the clothing side surface of the front body is provided with a target tape to which the fastening means is fixed,
An absorbent article in which, in the unfolded state, a temporary fastening means for releasably engaging or adhering to the nonwoven fabric is provided on the clothing side surface of the side panel.   The absorption according to claim 1, wherein the length of the absorbent article in the longitudinal direction is 600 mm or more and 1000 mm or less, and the length in the width direction (the length between the left and right side flap end portions) is 760 mm or more and 1380 mm or less. Sex goods.   The absorptive article according to claim 1 or 2 in which said temporary fix means is a hook member which constitutes a hook-and-loop fastener.   The absorbent article according to claim 1 or 2, wherein the temporary fixing means is temporary fixing means using a hot melt adhesive. The area of the temporary fixing means is 70 mm ² or more 400 mm ² or less, the absorbent article according to any one of claims 1 to 4.   The absorbent article in any one of Claim 1 to 5 which is a disposable paper diaper.

Images