JP5308617B2 - Tape-type disposable paper diapers - Google Patents

Description

  The present invention relates to a tape-type disposable paper diaper constructed by joining a front body sheet and a back body sheet to an absorbent main body.

As shown in FIG. 13, conventionally, a commercially available tape-type disposable paper diaper 50 has a liquid-permeable top sheet 51 and a back sheet 52 integrally formed from the front body to the back body, The waist part 53 and the waist part 54 between the top sheet 51 and the back sheet 52 project a large number of elastic elastic members 55, 55... It has a structure in which the fastening bases 56 and 56 of the provided fastening tape are bonded. Further, in order to form side gathers around the legs, elastic elastic members 57, 57... Are arranged along the longitudinal direction of the disposable diaper.
JP-A-10-118116 JP 2002-224160 A

  However, in the case of the tape-type disposable paper diaper, the fastening portions 56 and 56 of the fastening tape are bonded to both end portions of the waist portion 53 and the waistline portion 54, and in the horizontal direction except for the attachment base portions 56 and 56. A large number of elastic expansion and contraction members 55, 55... Are bonded to each other, and elastic force is applied to the waist portion between the fastening bases 56, 56 of the fastening tape. The 56 region has a structure in which no elastic force is applied. Therefore, an appropriate elastic force cannot be obtained when the tape is fastened, and there has been a problem that the disposable paper diaper is slipped off due to insufficient elastic force, and conversely, there is a problem of rubber marks due to excessive elastic force.

  In the manufacturing process of the tape type paper diaper, the elastic elastic members 57, 57 around the legs in the direction intersecting with the arrangement direction of the elastic elastic members 55, 55, which are bonded to the waist part 53 and the waist part 54. In order to arrange each elastic elastic member along the line, it is necessary to provide a reversing facility for reversing the paper diaper by 90 ° during the line conveyance. It was.

  In order to cope with this problem, in the above-mentioned Patent Document 1, a lamination sheet piece stuck on a sheet piece in a state where a plurality of thread-like elastic bodies are separated and aligned is arranged in the width direction of the main body sheet. There is described a disposable paper diaper that is attached to a predetermined position of a main body sheet in a state where they are matched and the filamentous elastic body is extended. However, in the invention described in Patent Document 1, after performing the manufacturing operation of the laminating sheet piece in which the elastic elastic member is stuck on the sheet piece in a separate process from the disposable diaper body, the laminating sheet piece is used for the body. The work of sticking on the sheet is necessary, and the manufacturing cost increases and the manufacturing work is troublesome.

  On the other hand, in the conventional disposable diaper, like the disposable diaper described in Patent Document 2, the tension of the elastic stretchable members disposed in the waist and the waistline is weak, the waist is weak, and the waistline is strong. By doing so, it has been proposed to prevent the rubber from being marked on the waist and to prevent leakage at the waist. However, it has been found that it is important to prevent leakage by improving the followability of the absorbent body to the wearer and to prevent the rubber from being left behind, especially for babies who move around actively.

  Therefore, the main problem of the present invention is to increase the followability of the absorbent body by imparting an appropriate stretching force to the waist, thereby preventing leakage, preventing the rubber from being marked, and manufacturing operations of paper diapers, particularly elastic stretching. The object is to propose a tape-type disposable paper diaper that simplifies the manufacturing process associated with the arrangement of members.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and three-dimensional gathers are provided along the longitudinal direction on both sides of the surface side. A sheet for the back body that is provided with the absorbent main body and a plurality of elastic elastic members disposed between the two nonwoven fabrics along the waist part and the waist part, and is joined to the back body side of the absorbent main body, An elastic stretchable member is disposed at least along the waist between the two non-woven fabrics, and is composed of a front body sheet joined to the front body side of the absorbent main body,
In the back body sheet, the resilient and elastic members are arranged over the entire width of the rear body sheet Rutotomoni, resilient and elastic members arranged in waist portion is arranged in a curved shape that bulges to the crotch side, and A fastening member for attaching a disposable diaper is affixed to both sides of the rear body sheet and the body side surface, and the fastening member is vertically long so as to straddle the waist and the waist area. By forming a rectangular shape and pasting the back body sheet in an unfolded state before being contracted by the elastic elastic member, the fastening member also forms a part of the elastic region, and the back body sheet At both end portions, both end portions of the elastic elastic member are arranged so as to overlap the fastening member,
The back body sheet and the front body sheet are bonded to the body-side surface of the absorbent main body, and the liquid-permeable top sheet at the front and rear portions of the absorbent main body, the back body sheet, A pocket-shaped part surrounded by the front body sheet is formed, and in the rear body sheet, the elastic elastic member disposed in the waistline portion passes through the pocket-shaped part and is centered in the width direction of the pocket-shaped part. There is provided a tape-type disposable paper diaper characterized in that it is arranged with a trajectory that reverses at.

  In the first aspect of the present invention, the elastic elastic member is disposed over the entire width of the rear body sheet, and is attached to the body-side surface at both side ends of the rear body sheet. The fastening member is attached so that the waistline of the back body can be tightened over the entire range when a disposable diaper is attached, and the fastening member can be tightened in an adjustable manner. Can be prevented to prevent leakage and prevent the rubber from being marked. In addition, the paper diaper is composed of three members, an absorbent main body, a back body sheet, and a front body sheet, and each member is manufactured in a separate process and then assembled. Since the elastic stretchable member can be arranged along the line direction along the direction and transported by a so-called longitudinal flow method, the manufacturing process associated with the placement of the elastic stretchable member can be simplified.

  As the present invention according to claim 2, the elastic force of the elastic elastic member arranged at the waist part of the back body sheet is larger than the elastic force of the elastic elastic member arranged around the trunk part of the back body sheet. The tape-type disposable paper diaper according to claim 1, wherein the disposable disposable diaper is set.

  In the present invention according to the second aspect, it is possible to improve the followability of the absorbent body by applying an appropriate stretching force to the waistline to prevent leakage and to prevent the rubber from being marked.

  As described above in detail, according to the present invention, by applying an appropriate stretching force to the waistline, the followability of the absorbent body can be improved, leakage can be prevented, and rubber marks can be prevented, and the manufacturing operation of the paper diaper, particularly elastic The manufacturing process associated with the arrangement of the elastic member can be simplified.

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

  FIG. 1 is a product state external view of a disposable paper diaper according to the present invention, FIG. 2 is a development view thereof, and FIG. 3 is an exploded view thereof.

  1 to 3, a disposable paper diaper 1 (hereinafter simply referred to as a paper diaper) is provided with an absorbent main body 10 and elastic elastic members 22, 22... At the waist part S1, and elastic expansion and contraction at the waist part S2. The members 23, 23... Are arranged to form shearing, and the back body sheet 20 bonded to the back body B side of the absorbent main body 10 and the elastic stretch members 32, 32. The front body sheet 30 is bonded to the front body F side of the absorbent main body 10.

  As shown in FIGS. 3 and 4, the absorbent main body 10 includes a liquid-permeable surface sheet 11 made of a perforated or non-porous nonwoven fabric, a perforated plastic sheet, or the like and covering the use surface side, and the outer side of the paper diaper. Further, a side for forming an absorbent body 12 made of cotton-like pulp or the like having a certain degree of rigidity (for example, rectangular shape (or hourglass shape)) and a three-dimensional gather BS standing on the surface side on both sides around the leg of the paper diaper It is mainly composed of a gathered nonwoven fabric 13 and a leak-proof sheet 14 made of polyethylene or the like disposed so as to cover at least the entire area of the absorbent body 12 on the outer surface side of the absorbent body 12.

  As shown in FIG. 3, the back body sheet 20 is bonded along the horizontal direction of the waist portion S <b> 1 and the waistline portion S <b> 2 between the two upper layer nonwoven fabrics 21 </ b> A and the lower layer nonwoven fabric 21 </ b> B made of a nonwoven fabric or the like. And a plurality of elastic elastic member groups 22, 22, 23, 23, and fastening members 24, 24 for wearing paper diapers that are bonded to the body-side surface at both side ends of the upper-layer nonwoven fabric 21 A. And is composed mainly of.

  As shown in FIG. 3, the front body sheet 30 has two upper-layer nonwoven fabrics 31A and 31B made of nonwoven fabric and the like, and an elastic material bonded between them at least along the horizontal direction of the waist portion S1. It is mainly comprised from the expansion-contraction members 32, 32 ... and the front target tape (henceforth FTT) 33 for fixing the said fastening members 24 and 24 to the abdominal surface.

  Hereinafter, the absorbent main body 10, the back body sheet 20, and the front body sheet 30 will be described in detail.

(Structure of the absorbent main body 10)
First, an example of the structure of the absorbent main body 10 will be described in detail with reference to FIGS.

  As described above, the absorbent main body 10 has a structure in which an absorbent body 12 such as cotton-like pulp is interposed between a liquid-permeable surface sheet 11 made of a nonwoven fabric or the like and a leak-proof sheet 14 made of polyethylene or the like. In order to absorb and retain body fluids.

  In the illustrated example, the absorbent body 12 is formed in a substantially rectangular shape (or an hourglass shape, etc.), and its width dimension is a dimension that does not give the wearer a feeling of wrinkle by hitting the crotch part. It is wide. The absorbent body 12 is surrounded by crepe paper 16 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 absorbent body 12, it is desirable to use an airlaid absorbent body that can reduce the bulk.

  As the liquid-permeable surface sheet 11 covering the surface side (skin contact surface side) of the absorbent body 12, a porous or non-porous nonwoven fabric, a porous plastic sheet, or the like is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, 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 touch property is excellent. The liquid-permeable top sheet 11 extends to the back surface side of the absorbent body 12 around the side edge of the absorbent body 12.

  As the leak-proof sheet 14 that covers the back surface side (non-skin contact surface side) of the absorbent body 12, a liquid-impervious plastic sheet such as polyethylene or polypropylene is used, but in recent years, it has moisture permeability from the viewpoint of preventing stuffiness. Those are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If the sheet thickness is 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 FIG. 4, the gathered nonwoven fabric 13 that forms the three-dimensional gathered BS is a nonwoven fabric made into a double sheet by folding, and the side edges of the absorbent body 12 wound by the topsheet 11 are further provided. It winds up from the upper side and extends to the back side of the absorbent body 12 to be bonded. More specifically, the gathered nonwoven fabric 13 has a three-dimensional gather BS forming portion left in the middle portion in the longitudinal direction of the paper diaper, and a range from the middle portion in the width direction to the back side of the absorbent body 12 is bonded by a hot melt adhesive or the like. Further, at the front and rear end portions in the longitudinal direction, the section from the intermediate portion in the width direction to the one side end edge is bonded in the range extending to the back surface side of the absorber 12, and the portion forming the three-dimensional gather BS is the absorber. 12 is bonded by a hot melt adhesive or the like while being folded at the upper surface portion.

  Inside the gathered nonwoven fabric 13 formed of the double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 15, 15... As shown in FIG. 1, the thread-like elastic stretch members 15, 15... Are for forming a three-dimensional gather BS by raising a nonwoven fabric portion protruding from the absorber side edge portion by elastic stretch force. . In the present invention, since the absorbent main body 10, the back body sheet 20 and the front body sheet 30 are manufactured in separate steps and then bonded, the absorbent main body 10 is always provided with the elastic elastic member. The production line can be conveyed along the arrangement direction of 15, 15,..., And the operation such as rotating in the orthogonal direction is not necessary, and the production operation can be simplified.

  As the thread-like elastic expansion / contraction member 15, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like that are generally used can be used. In order to make it difficult to see from the outside, it is preferable that the thickness is 925 dtex or less, the tension is 150 to 350%, and the interval is 7.0 mm or less. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

  In the same manner as the liquid-permeable surface sheet 11, the material fiber constituting the gathered nonwoven fabric 13 is not limited to synthetic fibers such as polyethylene or polypropylene, such as olefins, polyesters, and polyamides, but also regenerated fibers such as rayon and cupra, Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. It is preferable to use a non-woven fabric with a low basis weight and excellent air permeability. Furthermore, with respect to the gathered nonwoven fabric 13, 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, alkylchromic-chromoid water repellent It is desirable to use a water-repellent non-woven fabric coated with such as.

  The leak-proof sheet 14 enters the side end portion of the double sheet-like gathered nonwoven fabric 13, and constitutes a leak-proof wall on the lower end side of the three-dimensional gather BS as shown in FIG. Yes. In recent years, a sheet having moisture permeability is preferably used as the leak-proof sheet 14 from the viewpoint of preventing stuffiness. This water and moisture permeable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then centrifuging in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility. In addition, it is desirable to use an opaque one so that brown color such as defecation and urine does not appear. As the opacification, a plastic film and a pigment and filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc and barium sulfate are preferably used.

(Structure of rear body sheet 20)
The back body sheet 20 is, as shown in FIGS. 2, 3 and 5, a two-layer nonwoven fabric sheet composed of an upper nonwoven fabric 21A and a lower nonwoven fabric 21B, and the upper nonwoven fabric 21A and the lower nonwoven fabric 21B. Various elastic elastic members 22..., 23... Are arranged in the horizontal direction between them, and elasticity is given in the horizontal direction. The rear body sheet 20 is bonded to the rear body B side of the absorbent main body 10, and is joined by a front body sheet 30 and a fastening member 24, which will be described later, to fix the waistline.

  As shown in the planar shape of FIG. 5, the concave leg-around cut line 29 is formed in a portion corresponding to the leg opening of the paper diaper. However, a rectangular sheet may be used in some cases.

  As shown in FIG. 5, the rear body sheet 20 has a waist along the horizontal direction with an interval in the vertical direction of the waist portion S1 and the waistline portion S2 between the upper nonwoven fabric 21A and the lower nonwoven fabric 21B. The elastic elastic members 22, 22... Are bonded to the plurality of elastic elastic members 23, 23.

  The waist elastic elastic members 22, 22... Are a plurality of elastic rubber elastic elastic members arranged in the vicinity of the waist opening edge (waist part S1) in the vertical direction, and around the waist part of the body. It is for attaching a disposable diaper to the body by giving an expansion / contraction force so as to tighten. As the waist elastic elastic member 22, thread rubber is used in the illustrated example, but, for example, a tape-like elastic member may be used.

  The waist elastic stretchable member groups 23, 23... Extend in the horizontal direction at intervals in the vertical direction over the range (body waist portion S 2) from the lower end of the waist portion S 1 to the lower end of the rear body sheet 20. This elastic rubber elastic elastic member is provided with waist shirring for applying a horizontal stretching force to the waist part of the back body B so that the paper diaper is in close contact with the body. The boundary between the waist elastic elastic members 22, 22... And the waist elastic elastic member groups 23, 23. For example, even if the number of elastic elastic members arranged horizontally in the vertical direction is not specified, some of the upper elastic members 22, 22... The elastic elastic member should just function as the waist elastic elastic member group 23,23 ....

  Further, the back body sheet 20 includes a waist portion elastic stretch members 22, 22... And a waist elastic stretch member group 23, 23. The shearing strength can be varied by adjusting (elongation during bonding). At this time, it is desirable to increase the tension of the waist portion S1 and decrease the tension of the waist portion S2. For babies that move actively, the waist part S1 can be tightened strongly to prevent the paper diaper from shifting, and the waist part S2 having the adhesive part with the absorbent main body 10 can be relatively weakly tightened. The followability between the absorbent body and the wearer can be enhanced to prevent leakage and prevent the rubber from being marked.

  On the other hand, the fastening member 24 for fixing the paper diaper to the body is firmly formed by hot melt bonding, heat sealing, ultrasonic bonding or the like on both sides of the back body sheet 20 and on the body side surface. It is fixed. The fastening member 24 is formed in a vertically long rectangular shape so as to straddle the waist portion S1 and the waistline portion S2, and is in an unfolded state before the rear body seat 20 is contracted by the elastic stretch members 22. By being affixed, the fastening member 24 also forms a part of the elastic region.

  The fastening member 24 has male / female mechanical fastener means on its surface, and is fastened to an FTT 33 having a female / male mechanical fastener function attached to the ventral surface of the front body sheet 30. Wear a paper diaper on the body.

  The rear body sheet 20 may be formed wider than the front body sheet 30 so that the fastening member 24 can be easily fastened to the FTT 33 of the front body sheet 30.

(Manufacturing method of sheet 20 for back body)
Next, the manufacturing method of the said back body sheet | seat 20 is explained in full detail.
The waist elastic elastic members 22, 22... Arranged in the waist S1 and the waist elastic elastic members 23, 23 arranged in the waist S2 are formed according to a known control seam method. After the hot melt adhesive is applied to the peripheral surface of 23, it is fixed by being introduced between the upper layer nonwoven fabric 21A and the lower layer nonwoven fabric 21B.

  In manufacturing the rear body sheet 20, as shown in FIGS. 7 and 8, the upper layer nonwoven fabric 21 </ b> A is supplied to the upper side of the nip roller portion 40, and the lower layer nonwoven fabric 21 </ b> B is supplied to the lower side. Various elastic elastic members (waist elastic elastic member 22 and waist elastic elastic member 23) having a hot melt adhesive applied to the peripheral surface by the peripheral surface coating device 41 are supplied between 21A and the lower layer nonwoven fabric 21B. Each is bonded to produce a continuous back body sheet 20 (see FIG. 8). Thereafter, the fastening members 24 and 24 are bonded, and then the continuous rear body sheet 20 is cut at a predetermined position (broken line position), thereby completing each rear body sheet 20.

  For example, as shown in FIG. 9 (A), the peripheral surface application to the elastic elastic members 22 ..., 23 ... is performed by supplying an adhesive to the bottom of the groove using a member 43a having a V-shaped groove. 9B, an application method using a comb gun 43 that passes the elastic elastic member through the groove, an application method using an omega member that applies an adhesive to the elastic elastic member using an omega (Ω) -shaped ring member, and FIG. As shown in the drawing, a conventionally known control seam coating method, in which an elastic elastic member is passed through the bending member 44 and an adhesive is applied, is known.

  Examples of the hot melt adhesive include EVA type, adhesive rubber type (elastomer type), olefin type, polyester / polyamide type, etc., but in this disposable diaper, the adhesive rubber type (elastomer type) is used. It is desirable to use

  The rear body sheet 20 according to the present invention is arranged with the elastic elastic members 22, 23... Over the entire width of the waist part S 1 and the waist part S 2. Can be tightened.

(Structure and manufacturing method of front body sheet 30)
The front body sheet 30 has substantially the same structure as the back body sheet 20, and as shown in FIG. 3 and FIG. 6, is a two-layer nonwoven fabric sheet composed of an upper nonwoven fabric 31A and a lower nonwoven fabric 31B. Between the upper layer nonwoven fabric 31A and the lower layer nonwoven fabric 31B, a plurality of elastic elastic members 32, 32... Are bonded by a hot melt adhesive along the horizontal direction of the waist portion S1 to impart elasticity.

  In addition, as shown in the planar shape of FIG. 6, although the concave leg periphery cut line 39 is formed in the part corresponded to the leg part opening of a paper diaper, it is good also as a rectangular sheet | seat depending on the case.

  The waist elastic elastic members 32... Arranged in the waist S 1 are joined to the elastic elastic members 22, 23. The elastic member 32 can be bonded to the elastic member 32 by applying an outer peripheral surface, and the upper-layer nonwoven fabric 31A and the lower-layer nonwoven fabric 31B of the waistline portion S2 are joined with a hot melt adhesive by a coater (not shown). It can be adhered by applying a curtain.

  On the other hand, the FTT 33 for fixing the paper diaper to the body is firmly fixed at a position corresponding to the fastening member 24 on the outer side of the paper diaper by hot melt bonding, heat sealing, ultrasonic bonding or the like.

(Assembly procedure for disposable diapers)
As shown in FIGS. 1 to 3, the absorbent main body 10, the back body sheet 20, and the front body sheet 30 are non-body-side surfaces of the absorbent body 10, the back body B side and the front body. On the front F side, the back body sheet 20 and the front body sheet 30 are bonded and integrated by a hot melt adhesive or the like.

  Moreover, the said back body sheet | seat 20 and the front body sheet | seat 30 can also be adhere | attached on the body side surface of the absorptive main body 10, as FIG. 10 shows. When configured in this manner, a pocket-like portion surrounded by the liquid-permeable surface sheet 11, the back body sheet 20, and the front body sheet 30 can be formed in the front and back portions of the absorbent main body 10. Therefore, there is an effect that leakage of excrement such as urine can be prevented.

[Other examples]
(1) In the above embodiment, the waist elastic portions 23, 23,... Of the back body sheet 20 are linearly arranged in the horizontal direction in the illustrated example, but as shown in FIG. You may make it arrange | position in the curve shape which curves below in the center part of the sheet | seat 20 for back body parts. Thus, by arranging the waist elastic elastic members 23, 23 ... in a curved line, it becomes possible to prevent the absorbent main body 10 from slipping off, and the feeling of wearing that eliminates the uncomfortable feeling and the feeling of sticking is good. Tape-type disposable paper diapers can be obtained.
(2) In the above embodiment, the waist elastic portions 23, 23,... Of the back body sheet 20 are arranged over the entire width of the back body sheet 20, but as shown in FIG. In addition, in the central part where the absorbent main body 10 is joined, it is possible to cut the waist elastic elastic member 23... is there. For example, as shown in Japanese Patent Application Laid-Open No. 2000-26015 and Japanese Patent Application Laid-Open No. 2002-273808, discontinuation of the elastic elastic member is performed by arranging various elastic elastic members on the lower layer nonwoven fabric 21B, and then embossing cutter roll and anvil roll. The lower layer non-woven fabric 21B is allowed to pass between the two, and the elastic stretchable member existing within a predetermined range may be finely cut by pressing or heating with the embossing cutter roll.
(3) Although the waist elastic elastic members 23, 23... Are arranged only on the back body sheet 20 side in the above embodiment, the waist elastic elastic members may also be provided on the front body sheet 30 side. Good.

It is an external view which shows the mounting state of the tape-type disposable paper diaper 1 which concerns on this invention. It is the development view. 1 is an exploded view of a tape-type disposable paper diaper 1. FIG. It is IV-IV sectional drawing of FIG. It is an expanded view of the sheet | seat 20 for back bodies. It is an expanded view of the sheet | seat 30 for front bodies. It is a schematic diagram which shows the assembly point of the sheet | seat 20 for back body parts. It is a principal part top view (IIIV-IIIV arrow of FIG. 7) of FIG. It is a figure which shows the example of an application | coating procedure (A) (B) of an adhesive agent. It is an external view which shows the mounting state of the tape-type disposable paper diaper 1 which concerns on the other form example. It is an expanded view of the tape-type disposable paper diaper 1 which concerns on the other form example. It is an expanded view of the tape-type disposable paper diaper 1 which concerns on the other form example. It is an expanded view which shows the conventional tape type disposable paper diaper 50. FIG.

  DESCRIPTION OF SYMBOLS 1 ... Tape-type disposable paper diaper, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Absorber, 13 ... Gather nonwoven fabric, 14 ... Leak-proof sheet, 15 ... Filament elastic elastic member, 16 ... Crepe paper, 20 ... rear body sheet, 21A ... upper layer nonwoven fabric, 21B ... lower layer nonwoven fabric, 22 ... waist elastic elastic member, 23 ... waist elastic elastic member, 24 ... fastening member, 29 ... leg cut line, 30 ... for front body Sheet, 31A ... upper layer nonwoven fabric, 31B ... lower layer nonwoven fabric, 32 ... waist elastic elastic member, 33 ... front target tape, 40 ... nip roller part, 41 ... peripheral surface coating device, 43 ... comb gun, F ... front body, B ... back Body, S1 ... waist, S2 ... waist

Claims (2)

An absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and the waist part is provided between the two nonwoven fabrics and the absorbent main body having a three-dimensional gather along the longitudinal direction on both sides of the surface side. And a large number of elastic elastic members arranged along the waist part, and elastic elastic members along the waist at least between the back body sheet joined to the back body side of the absorbent main body and the two nonwoven fabrics And is configured from a front body sheet joined to the front body side of the absorbent main body,
In the back body sheet, the resilient and elastic members are arranged over the entire width of the rear body sheet Rutotomoni, resilient and elastic members arranged in waist portion is arranged in a curved shape that bulges to the crotch side, and A fastening member for attaching a disposable diaper is affixed to both sides of the rear body sheet and the body side surface, and the fastening member is vertically long so as to straddle the waist and the waist area. By forming a rectangular shape and pasting the back body sheet in an unfolded state before being contracted by the elastic elastic member, the fastening member also forms a part of the elastic region, and the back body sheet At both end portions, both end portions of the elastic elastic member are arranged so as to overlap the fastening member,
The back body sheet and the front body sheet are bonded to the body-side surface of the absorbent main body, and the liquid-permeable top sheet at the front and rear portions of the absorbent main body, the back body sheet, A pocket-shaped part surrounded by the front body sheet is formed, and in the rear body sheet, the elastic elastic member disposed in the waistline portion passes through the pocket-shaped part and is centered in the width direction of the pocket-shaped part. A disposable disposable diaper, characterized in that it is arranged with a trajectory that reverses at .   The elastic force of the elastic elastic member arranged in the waist part of the back body sheet is set to be larger than the elastic force of the elastic elastic member arranged in the waist part of the back body sheet. The tape-type disposable paper diaper according to claim 1.

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