Tape-fastened paper diaper

Abstract

To provide a tape-fastened paper diaper that can effectively prevent leakage due to that solid gathers are freely attached to an arbitrary place excluding a part of a fixed place, and a place in which leakage easily occurs can be reinforced according to an excreting situation of a wearer.SOLUTION: A tape-fastened paper diaper that comprises first solid gathers including a liquid-repellent solid gather sheet and an elastic member is such that: the elastic member is adhered in a stretched state in a longitudinal direction to the vicinity of one width direction end of the solid gather sheet; sticking means is provided in the vicinity of the other width direction end of the solid gather sheet along the longitudinal direction; and a part of the vicinity of the width direction end at a side with the sticking means in the solid gather sheet is fastened to a skin contact surface side of a top sheet.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tape-fastened paper diaper having standing gathers. [Background technology]

[0002] Currently, various types of absorbent articles such as urine absorption pads, sanitary napkins, and disposable diapers are available on the market. Among these, tape-fastened disposable diapers, which fasten the diaper around the waist with tape after putting them on, can be fitted to the wearer's body shape, and there are a variety of tape-fastened disposable diapers available on the market.

[0003] Such tape-fastened disposable diapers mainly comprise as their constituent parts a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body containing fluff pulp or a highly absorbent polymer, an outer member that surrounds the wearer's waist, a fastening tape that fastens the outer member and a corresponding target tape. In addition, in order to prevent lateral leakage of bodily fluids, three-dimensional gathers containing elastic members that are attached mainly to the skin side of the top sheet are often also included as major constituent parts.

[0004] For example, Patent Document 1, which is a prior art document on absorbent articles characterized by three-dimensional gathers, describes an absorbent article that includes an absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body arranged between these two sheets, and side flaps extending outward from both longitudinal edges of the absorbent body, and an exterior member to which the absorbent main body is joined and which surrounds the wearer's abdomen and waist when worn and holds the absorbent main body against the wearer, with opposing both edge portions of the front and back body of the exterior member joined to form a waist opening and a pair of leg openings, and stretchable elastic members arranged along each of the openings. The disclosed pants-type disposable diaper is characterized in that the absorbent body has side flaps folded onto a top sheet, stretchable elastic members arranged in a stretched state on the side edges of the folded-back portions of the side flaps, and both longitudinal ends of the folded-back portions are adhesively fixed onto the top sheet, so that three-dimensional gathers are formed with the side edges of the side flaps as free edges by contraction of the stretchable elastic members, and the outer member has a plurality of stretchable elastic members arranged in the front and / or rear body along the waist direction of the diaper.

[0005] Furthermore, Patent Document 1 discloses an embodiment in which the absorbent main body has side flaps folded back onto the top sheet, a first stretchable elastic member and a second stretchable elastic member arranged in a stretched state at the side edges and fold lines of the folded back portions of the side flaps, both longitudinal ends of the folded back portions being adhesively fixed onto the top sheet and being adhesively fixed onto the top sheet by fixing lines provided along the longitudinal direction between the side edges of the folded back portions and the fold lines, and the absorbent main body is adhesively fixed to the exterior member by adhesive regions along the longitudinal direction that are provided with a width narrower than the width of the absorbent main body, thereby forming first three-dimensional gathers with the side edges of the side flaps as free edges due to contraction of the first stretchable elastic members, and second three-dimensional gathers with the fold lines as free edges due to contraction of the second stretchable elastic member. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 11-019121 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the three-dimensional gathers provided in conventional tape-fastened paper diapers such as urine pads are almost always glued and fixed to the top sheet near the widthwise side edges of the absorbent body with hot melt or the like, in which case the attachment position, length, or height cannot be changed.

[0008] Therefore, depending on the user's posture and excretion conditions, the leak prevention effect may not be sufficient, and bodily fluids may leak out to the outside of the tape-fastened disposable diaper.

[0009] Also, in an absorbent article with double three-dimensional gathers, i.e., two pieces of three-dimensional gathers on one side, as in the invention described in the above Patent Document 1, leakage can be prevented more effectively than with only one piece of three-dimensional gathers when a large amount of bodily fluid is excreted. However, since it is adhesively fixed to the exterior member, the attachment position, length, and height cannot be changed.

[0010] The present invention has been made in consideration of the above circumstances, and aims to provide a tape-fastened paper diaper that can effectively prevent leakage by allowing three-dimensional gathers to be freely attached to any location other than certain fixed locations and reinforcing areas where leakage is likely to occur depending on the wearer's excretion situation. [Means for solving the problem]

[0011] The inventors conducted extensive research and have come up with the present invention, which provides a paper diaper divided into a front body, a rear body, and a crotch section located between the front body and the rear body, and which includes a top sheet, a back sheet, an absorbent, side flaps, a fastening tape, and a target tape, in which a first three-dimensional gather including a liquid-repellent three-dimensional gather sheet and an elastic member is provided, an elastic member is attached in a longitudinally stretched state near one widthwise end of the three-dimensional gather sheet, and an attachment means is provided along the longitudinal direction near the other widthwise end of the three-dimensional gather sheet, and a part of the widthwise end of the three-dimensional gather sheet on the side provided with the attachment means is fixed to the skin-contacting surface side of the top sheet, so that the three-dimensional gathers can be freely attached to any place other than the part of the fixed places, and places where leakage is likely to occur depending on the wearer's excretion status can be reinforced, thereby providing a tape-fastened paper diaper that can effectively prevent leakage. That is, the present invention provides the following.

[0012] (1) A first aspect of the present invention is a garment that is divided into a front body, a rear body, and a crotch portion located between the front body and the rear body, and includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body that is located between the top sheet and the back sheet, at least a pair of side flaps that are located on both side edges in the width direction of the rear body, fastening tapes that extend from the side edges of each side flap and have fastening means formed of one member that constitutes a hook-and-loop fastener that fastens the front body and the rear body, and a fastening member that is provided on the surface of the back sheet of the front body and fastens the hook-and-loop fastener. and a target tape formed from the other component that constitutes the fastener, the tape-fastened paper diaper comprising a first three-dimensional gather including a liquid-repellent three-dimensional gather sheet and an elastic member, the elastic member being adhered in a stretched state in the longitudinal direction near one widthwise end of the three-dimensional gather sheet, an attachment means being provided along the longitudinal direction near the other widthwise end of the three-dimensional gather sheet, and a portion of the widthwise end of the three-dimensional gather sheet on the side having the attachment means being fixed to the skin-contacting surface side of the top sheet.

[0013] (2) A second aspect of the present invention is a tape-fastened paper diaper as described in (1), characterized in that the three-dimensional gathered sheet has a longitudinal dimension of 300 mm or more and 1000 mm or less, and a width dimension of 20 mm or more and 200 mm or less.

[0014] (3) A third aspect of the present invention is the tape-fastened paper diaper according to (1), characterized in that the attachment means is a mechanical hook tape.

[0015] (4) A fourth aspect of the present invention is a tape-fastened paper diaper as described in (1), characterized in that it comprises a second three-dimensional gather, which extends over the entire length of the tape-fastened paper diaper and has one widthwise end portion fixed to the skin-contacting surface of the top sheet, separate from the first three-dimensional gather. Effect of the Invention

[0016] According to the present invention, three-dimensional gathers can be freely attached to any location other than certain fixed locations, and locations where leakage is likely to occur can be reinforced depending on the wearer's excretion situation, thereby providing a tape-fastened paper diaper that can effectively prevent leakage. [Brief description of the drawings]

[0017] [Figure 1] 1 is a plan view showing a schematic external appearance of a tape-fastened disposable diaper according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, these are presented for illustrative purposes and are not intended to limit the present invention. In addition, the same elements are designated by the same reference numerals throughout the description of the embodiments.

[0019] In the description of this specification, the term "wearing the tape-fastened paper diaper 1" refers to at least one of wearing the tape-fastened paper diaper 1 and after wearing the tape-fastened paper diaper 1. The longitudinal direction of the tape-fastened paper diaper 1 refers to the direction from the front to the back of the wearer when the tape-fastened paper diaper 1 is worn, and is the direction indicated by the symbol Y in the drawing. The width direction of the tape-fastened paper diaper 1 refers to the direction horizontal to or perpendicular to the longitudinal direction, and is the direction indicated by the symbol X in the drawing. Furthermore, the skin-contacting surface refers to the surface of each member, such as the absorbent body, that is placed on the skin side of the wearer when worn, and the non-skin-contacting surface refers to the surface of each member, such as the absorbent body, that is placed on the opposite side to the skin side of the wearer when worn. The body fluid refers to liquid discharged from the body to the outside, such as urine, blood, and water in loose stool. Furthermore, the tape-fastened paper diaper 1 is particularly exemplified by a tape-fastened paper diaper that also uses an inner pad, but is not limited thereto, and may be other tape-fastened paper diapers.

[0020] <Tape-fastened paper diapers> Fig. 1 is a plan view of a tape-fastened disposable diaper 1 according to an embodiment of the present invention, as viewed from the top sheet 10 side. As shown in Fig. 1, the tape-fastened disposable diaper 1 is divided into a front body 2, a rear body 3, and a crotch section 4 located between the front body 2 and the rear body 3. The tape-fastened disposable diaper 1 also has a liquid-permeable top sheet 10 arranged on the skin contact side, a liquid-impermeable back sheet 20 arranged on the non-skin contact side opposite the top sheet 10, and an absorbent body 30 arranged between the top sheet 10 and the back sheet 20. As a result, the absorbent body 30 is sandwiched between the top sheet 10 and the back sheet 20.

[0021] The longitudinal dimension of the tape-fastened paper diaper 1 is preferably 700 mm or more and 1100 mm or less. The widthwise dimension of the front body 2 is preferably 300 mm or more and 600 mm or less, and the widthwise dimension of the back body 3 is preferably 400 mm or more and 700 mm or less. Furthermore, the widthwise dimension of the crotch portion 4 is preferably 200 mm or more and 400 mm or less. By adjusting the dimensions of the tape-fastened paper diaper 1 within the above ranges, a tape-fastened paper diaper 1 that can effectively prevent leakage can be obtained.

[0022] (Top sheet) The top sheet 10 may be formed from a substrate having liquid permeability that allows bodily fluids 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. Any known method may be used as a method for carrying out the embossing or perforation process without any restrictions. The top sheet 10 may contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer, or the like in order to reduce irritation to the skin. From the viewpoints of strength, processability, and liquid return, the basis weight of the top sheet 10 is 10 g / m 2 More than 40g / m 2 It is preferable that the thickness is less than 15 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.

[0023] (Back seat) 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 breathable or non-breathable, liquid-impermeable plastic film can be used. From the viewpoint of strength and processability, the basis weight of the back sheet 20 is 10 g / m 2 More than 40g / m 2It is preferable that the thickness is less than 15 g / m 2 More than 35g / 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.

[0024] (Absorbent) In the tape-fastened disposable diaper 1 of the present invention, the longitudinal dimension of the absorbent body 30 is preferably 690 mm or more and 1090 mm or less. The widthwise dimension of the absorbent body 30 in the front body 2 is preferably 200 mm or more and 300 mm or less, and the widthwise dimension of the back body 3 is preferably 300 mm or more and 600 mm or less. Furthermore, the widthwise dimension of the absorbent body 30 in the crotch portion 4 is preferably 180 mm or more and 380 mm or less, and 200 mm or more and 280 mm or less. Furthermore, the shape of the absorbent body 30 is not particularly limited, but it is preferable that the left and right side surfaces of the absorbent body 30 in the front body piece 2 and the rear body piece 3 are substantially circular, as shown in FIG.

[0025] The absorbent body 30 contains absorbent fibers as a base material and a highly absorbent polymer. The absorbent fibers are not particularly limited as long as they are generally used in absorbent articles such as incontinence products 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 (e.g., 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 300g / m 2 It is preferable that the thickness is less than 150 g / m 2More than 250g / m 2 This allows the fabric to absorb a larger amount of body fluid without impairing the feel on the skin.

[0026] There are no particular limitations on the superabsorbent polymer (SAP) of the absorbent body 30 as long as it can absorb body fluids and prevent backflow, and among these, from the viewpoint of the absorption amount per weight, a superabsorbent resin is preferable. The basis weight of the superabsorbent polymer contained in the absorbent body 30 is 50 g / m 2 More than 200g / m 2 It is preferable that the thickness is less than 50 g / m 2 More than 100g / m 2 It is more preferable that:

[0027] (Side flap) The tape-fastened disposable diaper 1 of the present invention has side flaps 40 disposed at both widthwise edge portions of the rear body 3. The longitudinal dimension of each of the side flaps 40 is preferably 150 mm or more and 200 mm or less, and the widthwise dimension of each of the side flaps 40 is preferably 100 mm or more and 200 mm or less.

[0028] (Fastening tape) The tape-fastened disposable diaper 1 of the present invention has fastening tapes 50 which extend widthwise from the widthwise side edges of the side flaps 40 to the outside of the side flaps 40 and are arranged in two locations along the longitudinal direction at each end of the widthwise direction of the side flaps 40. The fastening tape 50 has fastening means formed from one of the members constituting the hook-and-loop fastener which fastens the front body piece 2 and the back body piece 3, and fastens the front body piece 2 and the back body piece 3 by engaging with a target tape 60 described below by the fastening means. The widthwise dimension of the fastening tape 50 is preferably 10 mm or more and 50 mm or less.

[0029] (Target Tape) The target tape 60 is provided on the surface of the back sheet 20 of the front body 2, and can be removably fastened to the fastening means of the fastening tape 50. By fastening the target tape 60 to the fastening tape 50, the front body 2 and the back body 3 are fastened together, and the tape-fastened disposable diaper 1 can be put into a worn state. The longitudinal dimension of the target tape 60 is preferably 100 mm or more and 200 mm or less, and the width dimension is preferably 300 mm or more and 450 mm or less.

[0030] (3D gathers) 1, the tape-fastened disposable diaper 1 of this embodiment has first three-dimensional gathers 70 provided on the skin contact side of the top sheet 10. The first three-dimensional gathers 70 include a liquid-repellent three-dimensional gather sheet 71 and an elastic member 72. The material of the three-dimensional gather sheet 71 is not particularly limited as long as it has liquid repellency, but known liquid repellent nonwoven fabrics such as SMS (three-layer structure of spunbond, meltblown, and spunbond) nonwoven fabrics and spunbond nonwoven fabrics can be used. From the viewpoints of strength and processability, the basis weight of the three-dimensional gather sheet 71 is set to 10 g / m 2 More than 20g / m 2 It is preferable that:

[0031] The dimensions of the three-dimensional gathered sheet 71 in each direction are not particularly limited, but the longitudinal dimension is preferably 300 mm or more and 1000 mm or less, and the width dimension is preferably 20 mm or more and 200 mm or less. The length of the three-dimensional gathers in existing absorbent articles such as urine pads is basically the same as the length of the pad. However, by setting the dimensions in each direction of the first three-dimensional gathers 70 (three-dimensional gather sheet 71) within the above-mentioned numerical range, it is possible to simultaneously and more effectively prevent side leakage, back leakage, and abdominal leakage by attaching the first three-dimensional gathers 70, which are longer than the longitudinal dimension of the tape-fastened disposable diaper 1, so as to surround the entire circumference of the absorbent body 30, or by attaching them so as to extend toward the outer (outer body) side.

[0032] Further, an elastic member 72 is adhered to the vicinity of one widthwise end of the three-dimensional gathered sheet 71 in a stretched state in the longitudinal direction. The material of the elastic member 72 is not particularly limited as long as it is one that is used in existing absorbent articles, but for example, polyurethane thread, a strip-shaped polyurethane film, thread-shaped or strip-shaped natural rubber, etc. can be used.

[0033] Furthermore, near the other end of the three-dimensional gathered sheet 71 in the width direction, an adhesive means 73 is provided along the longitudinal direction. Since the top sheet of an absorbent article is often a nonwoven fabric, the attachment means 73 is not particularly limited as long as it is a means that can be attached to the nonwoven fabric, and examples of the attachment means include adhesives, adhesive tapes, mechanical hook tapes, etc., with mechanical hook tape being preferred.

[0034] The first three-dimensional gather 70 having such a configuration has a portion near the widthwise end of the three-dimensional gather sheet 71 on the side having the attachment means 73 fixed to the skin-contacting surface side of the top sheet 10 (i.e., has a fixing portion 74). The location of the fixing part 74 is not particularly limited, but is preferably near the center of the three-dimensional gathered sheet 71 as shown in Fig. 1. In that case, both longitudinal ends of the three-dimensional gathered sheet 71 can be used as free ends 75 and attached to any desired location of the tape-fastened disposable diaper 1 using an attachment means 73. The longitudinal dimension of the fixing part 74 is not particularly limited, but is preferably 10 mm or more and 800 mm or less.

[0035] Since the attachment means 73 is a mechanical hook tape, it can be attached to any location on the surface of the nonwoven fabric of the tape-fastened paper diaper 1 according to the embodiment. The free end portion 75 can be attached to any location on the tape-fastened paper diaper 1 to reinforce locations where leakage is likely to occur depending on the wearer's excretion status, thereby effectively preventing leakage of urine and feces. In addition, when using a urine pad as an innerwear, the free end portion 75 can be attached to the three-dimensional gathers of the urine pad to increase the width and height. Also, the free end portion 75 can be attached at regular intervals to the three-dimensional gathers of the urine pad to create a double-structure three-dimensional gather, or the free end portion 75 can be attached to the outer (exterior) side by taping or the like.

[0036] In this way, by providing the first three-dimensional gathers 70 with the attachment means 73, the attachment position, length, height, etc. can be adjusted as many times as necessary until the wearer is satisfied with the attachment position, length, height, etc., according to the wearer's body shape, excretory situation, and also according to the usage situation of the inner and outer garments. Although the dimensions of the adhesion means 73 in each direction are not particularly limited, the longitudinal dimension is preferably 50 mm to 900 mm, and the width dimension is preferably 10 mm to 30 mm. The fastening means in the fastening tape 50 and the target tape 60 described above and the adhesion means 73 may be the same or different.

[0037] The first three-dimensional gathers 70 are attached to the skin-contacting surface of the tape-fastened paper diaper 1 so as to be approximately parallel to each other. At this time, the four free ends 75 of the three-dimensional gather sheet 71 can be folded toward the center of the tape-fastened paper diaper 1, and the first three-dimensional gathers 70 can be attached so as to be continuous (forming an approximately elliptical shape) from the widthwise end to the longitudinal end (not shown).

[0038] 1, the tape-fastened disposable diaper 1 according to this embodiment may further include, in addition to the first three-dimensional gathers 70, second three-dimensional gathers 80 which extend over the entire length of the tape-fastened disposable diaper 1 and have one widthwise end portion fixed to the skin-contacting surface of the top sheet 10. The configuration of the second three-dimensional gathers 80 is not particularly limited, and may include, for example, the same three-dimensional gather sheet and elastic member as the first three-dimensional gathers 70. By providing such second three-dimensional gathers 80, the tape-fastened paper diaper 1 can be made taller by attaching the above-mentioned attachment means 73 to the second three-dimensional gathers 80. Although the second three-dimensional gathers 80 in Fig. 1 are disposed closer to both ends of the tape-fastened paper diaper 1 than the first three-dimensional gathers 70, they may be disposed closer to the center of the tape-fastened paper diaper 1 than the first three-dimensional gathers 70.

[0039] 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. It is clear 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 claims that forms with such modifications or improvements can also be included in the technical scope of the present invention. [Explanation of symbols]

[0040] 1 Tape-fastened paper diaper 2 Front 3 Back 4 Inseam 10 Top sheet 20 Back Seat 30 Absorbent 40 Side flap 50 Fastening Tape 60 Target Tape 70, 80 3D gathers 71 Three-dimensional gathered sheet 72 Elastic Members 73 Adhesive means 74 Fixed part 75 Free end

Claims

1. A disposable diaper comprising a front body, a rear body, and a crotch portion located between the front body and the rear body, a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent body located between the top sheet and the back sheet, at least a pair of side flaps located on both side edges in the width direction of the rear body, fastening tapes extending from the side edges of each side flap and having fastening means formed of one member constituting a hook-and-loop fastener for fastening the front body and the rear body, and a target tape provided on the surface of the back sheet of the front body and formed of the other member constituting the hook-and-loop fastener, The garment is provided with a liquid-repellent three-dimensional gather sheet and a first three-dimensional gather including an elastic member, The elastic member is attached in a longitudinally stretched state to the vicinity of one widthwise end of the three-dimensional gathered sheet, and an attachment means is provided along the longitudinal direction of the other widthwise end of the three-dimensional gathered sheet, A tape-fastened paper diaper, characterized in that a portion of the widthwise end portion of the three-dimensional gathered sheet on the side having the adhesive means is fixed to the skin-contacting surface side of the top sheet.

2. 2. The tape-fastened paper diaper according to claim 1, wherein the three-dimensional gathered sheet has a longitudinal dimension of 300 mm or more and 1000 mm or less, and a width dimension of 20 mm or more and 200 mm or less.

3. 2. The tape-fastened disposable diaper according to claim 1, wherein the attachment means is a mechanical hook tape.

4. The tape-fastened paper diaper according to claim 1, further comprising a second three-dimensional gather, which extends over the entire length of the tape-fastened paper diaper and has one widthwise end portion fixed to the skin-contacting surface side of the top sheet, in addition to the first three-dimensional gather.

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