WO2007037391A1

WO2007037391A1 - Disposable pant-shaped diaper

Info

Publication number: WO2007037391A1
Application number: PCT/JP2006/319500
Authority: WO
Inventors: Ken Furudoi; Kousuke Murai
Original assignee: Daio Paper Corporation
Priority date: 2005-09-29
Filing date: 2006-09-29
Publication date: 2007-04-05
Also published as: JP4839315B2; JPWO2007037391A1; JP5107447B2; CN101277665A; JP2011115661A; CN101277665B

Abstract

A disposable pant-shaped diaper (1) which comprises an absorbent body (10) and an outer sheet (20) provided in the outer face side of this absorbent body (10) and in which the front corsage and the back corsage of the outer sheet (20) are bonded together at both sides, wherein the outer sheet (20) has elastic and stretch waist members located around the waist opening and a plural number of elastic and stretch hipline members horizontally located in the front corsage (F) and the back corsage (B) at intervals in the up and down direction, at the both sides where the front corsage and the back corsage are bonded together, side flaps (32,32) extending outward from the bonding parts are provided, and a fastening device (33) mechanically engageable with the outer face of the front corsage is provided in the front face side of each side flap (32).

Description

Specification

Disposable diapers

Technical field

[0001] The present invention relates to a pants-type disposable diaper that is mainly adjustable in fit to the body.

Background art

Conventionally, in a pants-type disposable diaper, in order to attach an absorbent body that absorbs body fluid to the body, various elastic elastic members are arranged on the exterior sheet that holds the absorbent body, and fit to the body. Increases sex.

[0003] For example, in Patent Document 1 shown below, as shown in FIG. 21, a liquid-permeable top sheet 50, a liquid-impermeable back sheet 51, and an absorber 52 disposed between both the sheets 50 and 51. A pants-type disposable paper diaper in which a waist opening and a pair of redder openings are formed by joining both sides of a front body and a back body, and a waist along the circumference of the waist opening. The elastic members 48, 48,... Are disposed, and the leg elastic members 53, 53,. Elastic elastic members 49, 49 ... are arranged around the waist to fit the disposable diaper to the body.

[0004] Also, in Patent Document 2 below, as shown in FIG. 22, there are also an absorbent main body and an exterior member cover, and the front body and the back body of the exterior member are each a first elastic material made of a plurality of elastic elastic materials. The elastic elastic members 55, 55 and the second elastic elastic members 56, 56 are arranged on the one side of the front and back bodies. From the edge to the other side edge through the crotch, at least part of which is arranged along the pair of leg openings, and further arranged at regular intervals in the crotch, Discarded diapers are disclosed.

[0005] Further, in Patent Document 3 below, as shown in FIG. 23, in order to further prevent misalignment, a main body having a top sheet, a back sheet, and an absorbent body is provided, and the main body includes a ventral portion. A waist opening and a redder opening are formed by joining and fixing the left and right side edges of each of the abdominal side and the back side, and the waist opening and the redder opening are formed. The mouth is provided with a waist elastic member 57 and a redder elastic member 58 that form a substantially continuous gather along the entire circumference of each peripheral edge. Alternatively, a plurality of waistline elastic members 59, 59 ... are arranged on the back side, and these waistline elastic members 59, 59 ... are arranged in a shape displaced toward the crotch side, A disposable pants-type diaper is disclosed in which the amount of displacement of the rotating elastic member 59. 59... Is maximized at the center of the ventral side.

Patent Document 1: Japanese Patent Laid-Open No. 7-265357

Patent Document 2: Japanese Patent Laid-Open No. 11-36103

Patent Document 3: Japanese Patent Laid-Open No. 2001-258931

Disclosure of the invention

Problems to be solved by the invention

[0006] In the pants-type disposable diaper, as described above, the elastic stretch member is independently provided in each of the three portions of the waist opening, the redder opening, and the waistline so that the body fits. To ensure. However, although the above-mentioned various elastic elastic members can provide a minimum fit, the body is not always satisfactory because the individual differences are large.

[0007] Accordingly, a main object of the present invention is to provide a disposable diaper that can be fit-adjusted according to individual differences, in addition to ensuring fit to the body by an elastic stretchable member.

The second challenge is to use pants and to be able to put on disposable diapers just like tape-type diapers.

Means for solving the problem

[0008] In order to solve the above problems, the present invention according to claim 1 includes an absorbent main body including an absorbent body and an exterior sheet provided on the outer surface side of the absorbent main body. A pant-type use with a waist opening and a pair of left and right redder openings formed by joining the front and back bodies on both sides!

The exterior sheet includes a waist elastic elastic member disposed around the waist opening, and a composite member disposed along the horizontal direction with an interval in the vertical direction between the front body and the back body. With a number of waist elastic elastic members,

At both sides where the front body and the back body are joined, a side extension flap extending outward from the joint is provided, and on the front side of the side extension flap, on the front body outer surface. A disposable diaper is provided, characterized in that it comprises engagable mechanically engaging fastener means.

[0009] In the invention of claim 1, the side part extending flaps extending outward from the joint part are formed on both side parts where the front body and the back body are joined. In addition, a mechanical engagement type fastener means that can be engaged with the outer surface of the front body is provided on the front side of the side part extending flap. Therefore, if the pants-type disposable diaper is worn and the fit to the body is insufficient, the side extension flaps are picked, pulled to the front body side, and joined to the outer surface of the exterior sheet. It becomes possible to arbitrarily adjust the fit.

[0010] As the present invention according to claim 2, there is provided the disposable diaper according to claim 1, wherein the side part extending flap is constituted by a side part of the back body of the exterior sheet. Various aspects of the side extension flaps can be considered. From the viewpoint of manufacturing superiority, fit to the body, etc., the side extension flaps are composed of the back body side parts of the exterior sheet. It is desirable to do so.

[0011] In order to solve the second problem, the present invention according to Claim 3 is a side part of the front body, in which a front part and a rear part of the exterior sheet are joined at both side parts. A tear perforation for separating the front body and the back body is formed at a position between the absorbent main bodies, and the use or the disposable diaper according to claim 1 or 2 is provided.

[0012] In the invention of claim 3, in order to further adjust the fit, the tear perforation is broken, the front body and the back body are separated, and the body of the tape-type diaper is separated. Can be worn.

[0013] As the present invention according to claim 4, the waist elastic stretchable member is a stretch of the waist elastic stretchable member disposed on the front body side due to the stretch force of the waist elastic stretchable member disposed on the back body side. Claims 1 to 3, which are set lower than the force, use or disposing diapers according to any of the above, are provided.

[0014] The invention according to claim 4 is the expansion and contraction of the waist elastic elastic member disposed on the back body side. The force is set to be lower than the elastic force of the waist elastic elastic member arranged on the front body side, and as a result, the elastic force of the waist elastic elastic member on the front body side is relative to that before use. Therefore, the side extension flaps face the inside of the front body, making it easier to operate, and when adjusting the wearing state force, the elastic force of the waist elastic elastic member on the back body is relatively Therefore, it is easy to pull the side part extension flap toward the front body side.

[0015] The present invention according to claim 5 includes an absorbent main body including an absorbent body and an exterior sheet provided on the outer surface side of the absorbent main body, and the front body and the rear body of the exterior sheet are on both sides. The pants-type errand where a waist opening and a pair of left and right redder openings are formed by being joined at each part! For throwing diapers!

The exterior sheet includes a waist elastic elastic member arranged around the waist opening, and a plurality of waist elastic elastic members arranged along the horizontal direction with an interval in the vertical direction between the front body and the back body. And

In both sides where the front body and the back body are joined, a side extension flap is provided that extends outward from the joint, and on the back side of the side extension flap, A disposable diaper is provided, characterized in that it comprises engagable mechanically engaging fastener means.

[0016] In the invention according to claim 5, the side part extending flaps extending outward from the joint part are provided at both side parts where the front body and the back body are joined. Further, a mechanical engagement type fastener means that can be engaged with the outer surface of the rear body is provided on the back side of the side part extending flap. Therefore, if the pants-type disposable diaper is worn and the fit to the body is not sufficient, the side extension flap is picked, pulled to the back body side, and joined to the outer surface of the exterior sheet. It becomes possible to arbitrarily adjust the fit. In the case of this invention, it is possible to adjust the fit while the baby is lying down or up and down.

[0017] As the present invention according to claim 6, there is provided the disposable diaper according to claim 4, wherein the side extension flap is constituted by a side part of a front body of an exterior sheet. From the standpoint of manufacturing superiority and fit to the body, the side extension flap is located on the side of the front body of the exterior sheet. It is desirable to configure more.

[0018] In order to solve the second problem, the present invention according to claim 7 is a side part of the back body, in which a front part and a back part of the exterior sheet are joined at both sides. The disposable diaper according to any one of claims 5 and 6, wherein a tear perforation for separating the front body and the back body is formed at a position between the absorbent main body! .

[0019] In the invention according to claim 7, when the fit is further adjusted, the tear perforation is broken to separate the front body and the back body, so that a tape-type diaper is obtained. Can be worn on the body.

[0020] As the present invention according to claim 8, the waist elastic elastic member is an elastic member of the waist elastic elastic member arranged on the back body side due to the elastic force of the waist elastic elastic member arranged on the front body side. Claims 5 to 7, which are set lower than the force, are used, and disposable diapers are provided.

[0021] The invention according to claim 8 is to set the elastic force of the waist elastic elastic member disposed on the front body side lower than the elastic force of the waist elastic elastic member disposed on the back body side. As a result, in the state before use, the elastic force of the waist elastic elastic member on the back body side is relatively high, so that the side extension flap is directed toward the inside of the back body and is easy to operate. At the same time, when adjusting the fit, the elastic force of the waist elastic elastic member on the front body is set to be relatively low, so the side extension hook is picked and pulled toward the back body side. It becomes easy.

[0022] In the present invention according to claim 9, the side extension flaps have a vertically divided structure, and the mechanical engagement type fastener means is provided on each of the upper side and lower side extension flaps. ~ 3, The use mentioned in somewhere !, A disposable diaper is provided.

[0023] The invention according to claim 9 is such that the side part extending flap has a vertically split structure, and each of the upper side and lower side side side extending flaps is provided with the mechanical engagement type fastener means. Yes, by splitting the side extension flaps vertically, the fit adjustment around the waist opening and the fit adjustment around the waist can be performed independently, and the fit can be further improved.

[0024] In the present invention according to Claim 10, between the upper side and lower side side extension flaps. 10. The disposable diaper according to claim 9, wherein a tear perforation for separating the upper side side extension flap and the lower side side extension flap is formed.

[0025] In the invention of claim 10, when mounting, the tear perforation is cut and joined while the upper side side extension flap and the lower side extension extension flap cross each other. Cross stop is possible.

[0026] The present invention according to claim 11 is a disposable diaper comprising: an absorbent main body including an absorbent body; and an exterior sheet having a front body and a rear body and provided on an outer surface side of the absorbent main body. In

And a disposable diaper characterized by comprising mechanically engaging fastener means that are engageable with the outer surface of the front body on both sides of the rear body of the exterior sheet and on the surface of the absorbent main body. .

[0027] The invention described in claim 11 is to cope with a so-called tape-type use and a disposable diaper by stopping the joining of both sides of the front body and the back body of the exterior sheet.

The invention's effect

[0028] As described above in detail, according to the present invention, it is possible to ensure fit to the body by the elastic elastic member and to adjust fit according to individual differences.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0030] FIG. 1 is an appearance view of a product state of a pants-type disposable paper diaper 1 according to the present invention, FIG. 2 is a development view thereof, FIG. 3 is a view taken along line III-III in FIG. 2, and FIG. — IV line view. Note that the required part of the drawing should be marked with an X mark!

[0031] As shown in the figure, this pants-type disposable paper diaper 1 (hereinafter simply referred to as paper diaper)

. ;) Is an outer surface of the absorbent main body 10 in which an absorbent 13 such as cotton-like pulp is interposed between a liquid-permeable surface sheet 11 that is also strong such as nonwoven fabric and a leak-proof sheet 12 that is also strong like polyethylene. The paper diaper has a structure in which an exterior sheet 20 is disposed on the side. [0032] The exterior sheet 20 includes waist elastic elastic members 25, 26,... Arranged around the waist opening, and a front body F and a back body B spaced vertically. A plurality of waist elastic elastic members 27 arranged along the horizontal direction 27, 28, and the joints 30, 30 on both sides where the front body F and the back body B are joined. A side extension flap 32 extending outward from 31 is provided, and a mechanical engagement type fastener means 33 that can be engaged with the outer surface of the front body F is provided on the front side of the side extension flap 32.

Hereinafter, the structure of the absorbent main body 10 and the exterior sheet 20, the assembly structure thereof, and the manufacturing method will be described in order.

[0033] (Structure of absorbent main body 10)

In the illustrated example, the absorbent body 13 is formed with a substantially square shape in plan view, and its width dimension is such that it does not give the wearer a feeling of bumps by hitting the crotch part. The absorbent body 13 is surrounded by crepe paper 14 in order to maintain the shape and improve the diffusibility of the body fluid that has passed through the liquid-permeable surface sheet 11. As the absorber 13, it is desirable to use an airlaid absorber that can reduce the bulk.

[0034] As the liquid-permeable surface sheet 11 covering the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester or polyamide, regenerated fibers such as rayon cubra, natural fibers such as cotton, Nonwoven fabrics obtained by appropriate processing methods such as the spunlace method, the spunbond method, the thermal bond method, the melt blown method, and the needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and drape, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through-holes are formed in the liquid-permeable surface sheet 11, urine and the like are quickly absorbed, and the dry diffusibility is excellent. The liquid-permeable surface sheet 11 is wound around the side edge of the absorbent body 13 and extends to the back surface side of the absorbent body 13.

[0035] The leak-proof sheet 12 that covers the back side (non-skin contact surface side) of the absorbent body 13 is a force that uses a liquid-impervious plastic sheet such as polyethylene or polypropylene. Those having wettability are preferably used. This impervious' breathable sheet, even if For example, it is a microporous sheet obtained by melting and kneading an inorganic filler in polyolefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If they are the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility.

On the other hand, as shown in FIGS. 3 and 4, the gathered nonwoven fabric 15 forming the three-dimensional gathered BS is a nonwoven fabric made into a double sheet by folding, and is wound by the liquid-permeable surface sheet 11. Further, the side edge portion of the absorbent body 13 is further rolled up to the back surface side of the absorbent body 13 with its upper side force involved and bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather BS formation portion at the middle portion in the longitudinal direction of the paper diaper shown in FIG. 3, and the range from the middle portion in the width direction to the back side of the absorbent body 13 is hot-melt. Adhered by an adhesive or the like, and at the front and rear end portions in the longitudinal direction, as shown in FIG. 4, the section from the intermediate portion in the width direction to the one side edge extends within the range extending to the back side of the absorber 13. At the same time, the portion forming the three-dimensional gather BS is bonded with a hot melt adhesive or the like while the upper surface of the absorber 13 is folded.

[0037] Inside the gathered non-woven fabric 15 formed of the double sheet non-woven fabric, a plurality of thread-like elastic elastic members 16, 16, ... are disposed on the standing end side portion, and the absorber 13 A thread-like elastic elastic member 17 is disposed in the vicinity of the side edge, and further, a thread-like elastic elastic member 18 is disposed on the back side of the absorbent body 13. Elastic tip elastic member 1

6, 16... Are mainly used for forming a three-dimensional gather BS by raising a non-woven fabric portion protruding from the absorber side edge by its elastic stretching force.

As shown in the product state diagram in FIG. It is for composition. The standing height HL of the absorber 13 from the bent portion to the absorber side edge is 5 to 30 mm, preferably 20 to 30 mm. When the standing height HL is less than 5 mm, it is too short to make it difficult to bend the side of the absorber, and sufficient fit to the skin cannot be ensured. In addition, when the standing height HL exceeds 30 mm, the standing length is too long and the bending cannot be effectively performed.

[0038] The leak-proof sheet 12 enters into the double sheet-like gathered nonwoven fabric 15, As shown in Fig. 5, a leak-proof wall is constructed on the lower end side of the three-dimensional gathered BS. As such a leak-proof sheet 12, it is desirable to use an opaque sheet so as not to cause browning such as defecation and urine. As the opacifying agent, a plastic film and a pigment or filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc, and barium sulfate are preferably used.

[0039] Examples of the thread-like elastic elastic members 16 to 18 include materials such as commonly used styrene rubber, polyolefin rubber, urethane rubber, estenole rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester. Can be used. In order to make it difficult to see from the outside, the thickness should be 925 dtex or less, and the tension should be 150-350%. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

[0040] In the same manner as the liquid-permeable surface sheet 11, the material fibers constituting the gathered nonwoven fabric 15 are not only polyolefin fibers such as polyethylene or polypropylene, synthetic fibers such as polyester or polyamide, but also rayon or cuvula. It can be natural fibers such as recycled fibers and cotton, and can use nonwoven fabrics obtained by appropriate processing methods such as the spunbond method, thermal bond method, melt blown method, needle punch method, etc. In order to prevent this, it is recommended to use a non-woven fabric with low basis weight and excellent air permeability. Furthermore, with regard to the gathered nonwoven fabric 15, in order to prevent the transmission of urine and the like, to prevent fogging, and to improve the touch to the skin (dry feeling), a silicon-based, paraffin metal-based, alkylkite mittaloid water-repellent water repellent It is desirable to use a water repellent nonwoven fabric coated with an agent.

[0041] (Structure of exterior sheet 20)

As shown in FIGS. 2 and 6, the exterior sheet 20 is a two-layer nonwoven sheet composed of an upper layer nonwoven fabric 20A and a lower layer nonwoven fabric 20B. Various elastic elastic members are provided between the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B. Arranged and stretchable. The planar shape has a pseudo hourglass shape as a whole, with leg leg cuts 29 for forming leg openings in the middle.

In the exterior sheet 20 according to the present invention, as the elastic member, a waist elastic elastic part disposed around the waist opening 21, 23 in the developed shape shown in FIG. A plurality of waist elastic elastic members arranged in the horizontal direction at intervals in the vertical direction on the waists 22 and 24 of the front body F and the back body B. 27 ···, 28 ···.

[0042] The waist elastic members 25, 26, ... are arranged at intervals in the vertical direction in the vicinity of the waist opening edge in the side part joining range where the front body F and the back body B are joined. It is a multi-threaded elastic rubber member that attaches a disposable diaper to the body by applying a stretching force to tighten around the waist of the body. For the waist elastic elastic members 25, 26,..., Thread rubber is used in the illustrated example, but, for example, a tape-like elastic member may be used.

[0043] The waistline elastic member groups 27, 28,... Are arranged along the horizontal direction at intervals in the vertical direction over a range from the upper part to the lower part, except for the waist part, in the side joint range. This elastic rubber elastic elastic member is applied to the waist part of the front body F and back body B in the horizontal direction so that the disposable diaper is in close contact with the body. The boundaries between the waist elastic members 25 ···, 26 ··· and the waist elastic members 27 ···, 28 ··· are not necessarily clear. For example, even if the number of elastic members arranged in the horizontal direction with a vertical interval between the front body F and the back body B is not specified, some of the upper members function as waist elastic members. The remaining elastic members should function as waist elastic members.

[0044] Further, the waist elastic members 27, 28, ... may be continuously arranged so as to cross over the absorbent main body 10, but preferably, as shown in the figure, the absorbent body In order to further prevent the body 13 from constricting, it is preferable to cut the elastic elastic member across the absorbent main body 10 to make it discontinuous.

[0045] The discontinuity of the elastic elastic member is disclosed in, for example, Japanese Patent Laid-Open Nos. 2000-26015 and 2002-2.

As shown in Japanese Patent No. 73808, after various elastic members are arranged on the exterior sheet 20, the exterior sheet is passed between the embossing cutter roll and the anvil roll, and the embossing force is determined by pressurization or heating with the utter roll. A method of cutting the elastic member existing within the range with a fine force may be used.

[0046] In the exterior sheet 20, the product width L of the rear body B is larger than the product width L of the front body F.

B F

The rear body B is provided with side extension flaps 32, 32 extending outward from the heat seal part 30 where the front body F and the rear body B are joined. Total The output flap 32 is provided with a mechanical engagement type fastener means 33 that can be engaged with the outer surface of the front body F on the front side in the product state. The protruding length (K) of the side extension flap 32 is 10 to 50 mm, preferably 15 to 30 mm.

[0047] The mechanical joint type fastener means 33 is provided with a hook element 33b on the surface side of a fastening base material 33a such as plastic, polylaminated nonwoven fabric, nonwoven fabric, paper, etc., and the hook element 33b is, for example, letter-shaped. , J-shaped, mushroom-shaped, T-shaped, etc., and can be engaged with the outer surface of the outer sheet 20 (the lower layer nonwoven fabric 20B). In addition, the mechanical joining type fastener means 33 may be affixed separately to the front body F with a target tape (female side fastener) and engaged with this. The side extension flap 32 is folded inward and joined to the outer surface of the exterior sheet 20 in the product state (before use).

[0048] In the exterior sheet 20, the waist elastic elastic members 27 ···, 28 · · · are the elastic force of the waist elastic elastic members 28, 28 ··· arranged on the rear body B side It is desirable to set it lower than the elastic force of the waist elastic elastic members 27, 27. By providing such a tension difference, in the state before use, since the elastic force of the waist elastic elastic members 27, 27 ... on the front body F side is relatively high, the side extension flaps 32 Becomes inward and easier to operate. Also, when adjusting the fitting state force, the elastic force of the waist elastic elastic members 28, 28 ... of the back body B is set to be relatively low, so the side extension flap 32 is gripped. Front body Bow on the F side |

[0049] (Assembly of disposable diapers)

As shown in FIG. 6, the absorbent main body 10 and the exterior sheet 20 are integrally bonded to the upper surface side of the exterior sheet 20 by bonding with an adhesive such as hot melt. Then, the absorbent main body 10 and the exterior sheet 20 are folded back and forth along the folding line S, and the joints 31 and 31 of the front body F and the joints 30 and 30 of the back body B are heat welded or hot melted. By joining with an adhesive, etc., the pants-type disposable diaper 1 shown in Fig. 1 is assembled.

[0050] (Manufacture of disposable diapers)

Fig. 7 is an assembly process diagram in the case of the lateral flow method with the line direction as the width direction of the disposable diaper. The In the process of feeding out the continuous web of the outer sheet 20, the portion that becomes the crotch is cut out along the elliptical leg cutting line 36 by a roll cutter or the like. After tightening, the two mechanical joint type fasteners 33, 33 are pasted on the side corresponding to the side part of the back body side B, which is the upper side of the leg cutting line 36, across the planned cutting line, and the elliptical shape Laminate the absorbent body 10, 10 ... with hot melt adhesive so as to straddle the hollow part. After that, if the front body F side is cut at the product width L position between the absorbent bodies 10, 10, the sailor 34

F

Around F side is turned, and the joint parts 31 and 31 of the front body F and the joint parts 30 and 30 of the back body B are joined by heat welding or hot melt adhesive, etc., and then two mechanical joint fastener means 3 Cut in the middle of 3, 33 to get a pants-type disposable diaper 1.

[0051] Next, FIG. 8 shows a second example of the manufacturing method. First, in the process of feeding the continuous web of the exterior sheet 20, the crotch portion is cut out along the elliptical leg cutting line 36 by a roll cutter or the like. After tightening, the two mechanical joint-type fastener means 33, 33 are pasted on the side part corresponding to the side part on the back body side, which is the upper side of the leg-cut line 36, and the elliptical shape described above is attached. The absorbent body 10, 10 ... is laminated with hot melt adhesive so as to straddle the hollowed out part. After that, if the front body side F is cut at the center position 35 of the hollowed portion between the absorbent main bodies 10 and 10, the front body F side is turned back by the sailor 34, and the joints 31, 31 and 31 of the front body F are After joining the joining parts 30 and 30 of the body B with heat welding or hot melt adhesive, etc., the body B is cut at the center of the two mechanical joining fastener means 33 and 33 to obtain a pants-type disposable diaper 1. In this case, when joining the joint parts 31 and 31 of the front body F and the joint parts 30 and 30 of the rear body B by heat welding or hot melt adhesive, the joint part 31 of the front body F is The mechanical joining type fastener means 33 is joined while shifting the phase so as to match the joining part 30 on the outside.

[0052] Further, a third example of the manufacturing method shown in FIG. 9 is the same as the second example described above, in which the joining parts 31, 31 of the front body F and the joining parts 30, 30 of the back body B are thermally welded or hot. When joining with melt adhesive, etc., the phase difference between the upper and lower sides is eliminated. In this case, by setting the elastic force of the waist elastic elastic members 27, 27 ... on the front body side to be high By contracting the frame extending flap of the front body F, the mechanical joint type fastener means 33 can be exposed. [0053] By the way, in the above-described embodiment, the force shown in Fig. 10 is such that the two mechanical joint-type fastener means 33, 33 are stuck to the side part corresponding to the back body side B across the planned cutting line. As described above, after attaching the single mechanical joining type fastener means 33 across the planned cutting line, it may be cut in half. In this case, the attaching process of the mechanical joining type fastener means 33 is only once, and the manufacturing process can be shortened.

[Second Example]

Next, a second embodiment of the exterior sheet 20 will be described in detail with reference to FIG.

The exterior sheet 20 shown in FIG. 11 has, in the back body B, side extension flaps 32 that extend outward from the heat seal portions 30, 31 where the front body F and the back body B are joined. 32 has a vertically divided structure, and the mechanically engaging fastener means 33A and 33B are provided on each of the upper side side part extending flap 32A and the lower side side part extending flap 32B. By making the side extension flap 32 into the above-mentioned split structure, the fit adjustment around the waist opening and the fit adjustment around the waist can be performed independently, so that the fit can be improved. Become. In this case, in order to secure a fit adjustment allowance by the upper side side extension flap 32A and the lower side extension flap 32B, the waist side section A corresponding to the position of the upper side extension flap 32A, The waist elastic stretchable member 26 (located in the waist section A in the waist section C corresponding to the position of the lower side arm extension flap 32B and the waist section B where the side section extension flap does not exist 26 ( (In some cases, a part of the waist elastic elastic member 28 is included) and the elastic force of the waist elastic elastic members 28, 28... It is desirable to set lower than the elastic force of the waist elastic elastic members 28, 28. That is, higher flexibility and fit can be obtained by giving a degree of freedom of adjustment to the waist part to which the upper side side extension flap 32A and the lower side side extension flap 32B are attached. .

[0055] As shown in Fig. 12, the side part extension flap having the upper and lower divided structure has a protruding length of the side part extension flap, and the upper side side part extension flap 32A and the lower side arm part. Tear perforations 37 and 38 may be formed in the flap between the extension flap 32B. A tear perforation 37 shown in FIG. 12 (A) is an example of a perforation formed along the horizontal direction, and a tear perforation 38 shown in FIG. It is an example formed in a letter shape. When installing, it is possible to cut the tear perforations 37 and 38 and to cross-bond the upper side arm extension flap 32A and the lower side arm extension flap 32B while crossing each other. .

[0056] [Third embodiment]

In the first and second embodiments described above, the front side of the side extension flap 32 is provided with the mechanically engaging fastener means 33 that can be engaged with the outer surface of the front body, and the body fits with the disposable diaper 1 attached. If the fit is not sufficient, the side extension flap 32 is picked and pulled to the front body F side and joined to the outer surface of the exterior sheet 20 to adjust the fit arbitrarily. In order to allow the fit adjustment to be performed in a state where it is in a closed state, mechanical engagement type fastener means 33 that can be engaged with the outer surface of the rear body is provided on the back side of the side extension flap 32. What is necessary is just to prepare.

[0057] Specifically, as shown in FIG. 13, in the exterior sheet 20, the product width L of the front body F is wider than the product width L of the back body B. , Front body F

F B

And the back part B are provided with side extension flaps 32, 32 extending outward from the heat seal part 31 to be joined, and the side part extension flap 32 has a surface on the back side in the product state. In this case, contrary to the first embodiment, in the exterior sheet 20, the waist elastic elastic member 27. ··········, waist elastic elastic member 28, 28 placed on the front body F side waist elastic elastic member 27, 27 placed on the back body B side It is desirable to set it lower than the elastic force.

[0058] [Fourth embodiment]

In the first to third embodiments described above, the outer sheet 20 is composed of a single laminated sheet in which the upper non-woven fabric 20A and the lower non-woven fabric 20B are bonded together. It is possible to have a structure in which the outer exterior sheet part GF and the rear body exterior sheet part GB are separated.

(Fifth example)

In each of the above embodiments, the side extension flap 32 extends the end width of the front body F as it is. However, it can be formed in various shapes as shown in FIG. For example, as shown in FIG. 15 (A), the side flaps 32A and 32B may be formed in two steps in a trapezoidal shape, as shown in FIG. 15 (A), or as shown in FIG. 15 (B). A trapezoidal side extension flap 32 may be used, and as shown in FIG. 15 (C), the side extension flaps 32A and 32B are formed in a mushroom shape in two upper and lower stages. Also good.

[0059] [Sixth embodiment]

In each of the above embodiments, when adjusting the fit, the side extension flap 32 is picked in the pants state, and is pulled to the front body side and joined to the outer surface of the exterior sheet. Naturally, there is a limit to the adjustment fee. Therefore, as shown in FIGS. 16 and 17 to increase the adjustable range, the side end portion of the body (the front body F in the illustrated example) on the side where the side extension flap 32 is not formed is shown. Further, a tear perforation at an inner side of the heat seal part 30, specifically, a position between the heat seal part 30 and the absorbent main body 10, preferably a position near the inside of the heat seal part 30. 39 can be provided.

[0060] In this case, the front body F and the back body B are disconnected by tearing at the tear perforation 39, and the front body F and the back body B are connected just as in a tape-type diaper. After being applied to the body, the side extension flap 32 can be pulled toward the front body side and attached to an arbitrary position. In this case, the front body F may be provided with a number, a mark, or a design so that it becomes a standard for the joining position of the side extension flaps 32.

[0061] Further, when the tear perforation 39 is broken, the end fixing of the waist elastic elastic members 28, 28... May be released and the elastic members may be retracted. As described above, it is desirable to provide a side seal 40 inside the tear perforation 39 for fixing the waist elastic elastic members 28, 28. The side seal 40 may be provided continuously along the vertical direction, or may be provided discontinuously according to the waist elastic elastic members 28, 28.

[0062] [Seventh embodiment]

Furthermore, after tearing at the tear perforation 39, when mounting in the manner of a tape-type diaper, as shown in Fig. 20 (rear development), the front body F Belt loops 41, 41... May be provided on the outer surface side. In this case, the side extension flap 32 is preferably slightly shortened in the vertical dimension as shown in the drawing, and the side extension flap 32 is passed through a predetermined belt loop 41 at the time of mounting. It should be joined to the outer surface of the sheet 20. Further, in this embodiment, mechanical engagement type fastener means 33 may be provided on the outer surface side of the side portion extending flap 32 (or both on the inner surface side and the outer surface side). When the fastener means 33 is provided on the outer surface side, the side extension flap 32 can be folded back and fixed after passing through the belt loop 41, and the fastener means 33 can be reliably prevented from coming off during wearing. It becomes like this.

[Other examples]

(1) Each of the above-described embodiments is an example of a pants-type disposable diaper, but the step of joining the both sides of the front body F and the back body B of the exterior sheet is simply omitted, and the so-called t It is possible to obtain a product equivalent to a disposable disposable diaper. Conventionally, a tape-type disposable diaper has been required to be manufactured by a so-called longitudinal flow method, but by applying the present invention, it has become possible to manufacture by a so-called lateral flow method.

(2) In the above-mentioned pants-type disposable diaper, the elastic elastic members disposed on the exterior sheet 20 are the waist elastic elastic members 25, 26, and the front body F and the back body B in the vertical direction. There are two types of elastic elastic members 27, 28, ... around the waist that are arranged along the horizontal direction, but elastic elastic members can also be arranged around the legs. It is.

(3) In the above embodiment, the side extension flap 32 is constituted by the side part of the rear body of the exterior sheet 20, and the mechanical joint-type fastener means 33 is attached to the part, but the front body F and the back body B The joint position is slightly inward from the side edge, and the mechanically connected fastener means 33 is placed on the outer surface of the front body or the back of the front body. Try to occupy it.

(4) In the second embodiment described above, the side extension flap 32 is divided into two upper and lower stages. However, the upper part, the middle part, and the lower part have a three-stage structure, and the mechanical engagement type fastener means 33 is attached to each. That's right.

(5) In the above embodiment, the exterior sheet 20 is constituted by a single sheet, but it may be a two-part structure exterior sheet composed of a front body side exterior sheet and a rear body side exterior sheet. (6) In the first form example and the second form example, side extension flaps 32 and fastener means 33 are provided on the side of the back body B, and perforations 39 are provided on the side of the front body F. In the above third embodiment, side extension flap 32 and fastener means 33 are provided on the side of front body F, and perforation 39 is provided on the side of rear body B. Side extension flaps 32, fastener means 33, and perforations 39 may be provided on both sides of F. In this way, it can be used in the same way both front and back.For example, when the wearer is lying down, adjust the size, tear the side part with a perforation, and then re-fix it with the fastener means 33. If you wear it, whether you wear it on its back or on its back, it is inconvenient to insert a tape under the body and fix it!

(7) In each of the above embodiments, the side extension flaps 32, 32 are formed on both sides of the back body B and Z or the front body F, but the side extension flap 32 is formed only on one side. You may do it. Even in this case, the fit can be adjusted at the time of mounting, and the number of parts of the mechanically engaging fastener means 33 having a high material cost can be reduced.

Brief Description of Drawings

FIG. 1 is a product external view of a pants-type disposable paper diaper 1 according to a first embodiment of the present invention.

[Figure 2] This is a development view.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a view corresponding to the arrowed line III-III in FIG. 2 in the product state.

FIG. 6 is an exploded perspective view of the absorbent main body 10 and the exterior sheet 20.

[FIG. 7] A production procedure diagram of a pants-type disposable diaper 1 (part 1).

[FIG. 8] A production procedure diagram of the pants-type disposable diaper 1 (part 2).

[Fig. 9] Production procedure diagram of pants-type disposable diaper 1 (Part 3).

FIG. 10 is a plan view of a principal part showing another example of attachment of the mechanical joining type fastener means 33.

FIG. 11 is a development view of the exterior sheet 20 according to the second embodiment.

FIGS. 12 (A) and 12 (B) are main part development views showing an example of forming a perforation for tearing into the split-type side extension flap 32.

FIG. 13 is a development view of a pants-type disposable paper diaper according to a third embodiment. FIG. 14 is a development view of diapers showing 20 examples of exterior sheets according to a fourth embodiment.

[FIG. 15] (A) to (C) are plan views of relevant parts showing an example of the shape of the side extension flap 32 according to the fifth embodiment.

FIG. 16 is a product external view of a pants-type disposable paper diaper 1 according to a sixth embodiment.

[Fig. 17] This is a development view.

FIG. 18 is a main part development view showing a modified example of the exterior sheet 20 in the example of the pants-type disposable paper diaper according to the sixth embodiment.

FIG. 19 is a development view of a pants-type disposable paper diaper according to a seventh embodiment.

FIG. 20 is a rear view thereof.

FIG. 21 is a development view and a product drawing showing a conventional pants-type disposable diaper.

FIG. 22 is a development view showing a conventional pants-type disposable diaper.

FIG. 23 is a development view showing a conventional pants-type disposable diaper.

Explanation of symbols

1 ... pants-type disposable diaper, 10 ... absorbent body, 11 ... liquid-permeable surface sheet, 12 ... leak-proof sheet, 13 ... absorber, 14 ... crepe paper, 15 ... · Gathered non-woven fabric, 16 to 18… thread-like elastic elastic member, 20 · exterior sheet, 21 · 23 · waist opening, 22 · 24 · waist portion, 25 · 26 · · elastic elastic member, 27 · 28 · waist Elastic elastic member, 29… Leg cut, 3 2 · “Extend side flaps, 33 ··” Mechanical joint fastener means

Claims

The scope of the claims

[1] The absorbent body including the absorbent body and the exterior sheet provided on the outer surface side of the absorbent body also serve as a force, and the front body and the back body of the exterior sheet are joined at both sides to open the waist In a pants-type disposable diaper in which a pair of left and right redder openings are formed,

Both side portions where the front body and the back body are joined are provided with side extension flaps extending outward from the joint, and on the front side of the side extension flaps on the front body outer surface. Disposable diaper characterized in that it comprises engagable mechanically engaging fastener means.

[2] The disposable diaper according to [1], wherein the side part extension flap is constituted by a side part of the back body of the exterior sheet.

[3] Separating the front body and the back body at a position between the side part of the front body and the joining body where the front body and the back body of the exterior sheet are joined on both sides and the absorbent main body A disposable diaper according to claim 1 or 2, wherein a tear perforation is formed.

[4] In the waist elastic elastic member, the elastic force of the waist elastic elastic member arranged on the back body side is set lower than the elastic force of the waist elastic elastic member arranged on the front body side. The disposable diaper in any one of Claims 1-3.

[5] The absorbent body including the absorbent body and the exterior sheet provided on the outer surface side of the absorbent body also serve as a force, and the front body and the back body of the exterior sheet are joined on both sides, thereby opening the waist. In a pants-type disposable diaper in which a pair of left and right redder openings are formed,

The exterior sheet includes a waist elastic elastic member arranged around the waist opening, and a plurality of waist elastic elastic members arranged along the horizontal direction with an interval in the vertical direction between the front body and the back body. And In both sides where the front body and the back body are joined, a side extension flap is provided that extends outward from the joint, and on the back side of the side extension flap, Disposable diaper characterized in that it comprises engagable mechanically engaging fastener means.

6. The disposable diaper according to claim 5, wherein the side extension flap is constituted by a side part of the front body of the exterior sheet.

[7] Separating the front body and the back body at a position between the side part of the back body where the front body and the back body of the exterior sheet are joined on both sides and the absorbent main body A disposable diaper according to claim 5 or 6, wherein a tear perforation is formed.

[8] The waist elastic elastic member is configured such that the elastic force of the waist elastic elastic member arranged on the front body side is set lower than the elastic force of the waist elastic elastic member arranged on the back body side. Claims 5-71, the use as described in the misplaced, disposable diapers.

[9] The disposable according to any one of claims 1 to 8, wherein the side extension flaps have a vertically split structure, and each of the upper side and lower side side extension flaps includes the mechanically engaging fastener means. Diapers.

[10] A tear perforation for separating the upper side side extension flap and the lower side side extension flap is formed between the upper side side and lower side side extension flaps. Use and disposing of diapers according to claim 9.

[11] In a disposable diaper comprising an absorbent main body including an absorbent body, and an outer sheet provided on the outer surface side of the absorbent main body having a front body and a back body,

A disposable diaper characterized by comprising mechanically engaging fastener means that can be engaged with the outer surface of the front body on both sides of the rear body of the exterior sheet and on the surface of the absorbent main body.