JP5057465B2 - Disposable paper diapers - Google Patents

Description

  The present invention relates to a disposable paper diaper in which a waistline shirring is formed by a plurality of waistline elastic elastic members arranged along the horizontal direction at intervals in the vertical direction on the front body and the back body of the wearer's skin. The present invention relates to a disposable paper diaper that softens a waist shirring portion that is in direct contact with the elastic waist and firmly fixes an elastic elastic member disposed in the waist shirring portion.

  Conventionally, as an underpants-type disposable paper diaper provided on the market, it is composed of an absorbent main body including an absorbent body and an exterior sheet integrally provided on the outer surface side of the absorbent main body. A waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of both sides, and are arranged along the horizontal direction with a space in the vertical direction between the front body and the back body. There is known a disposable paper diaper in which a waist shearing is formed by a plurality of waist elastic elastic members. The exterior sheet is provided with stretchability by disposing a large number of elastic stretch members between two non-woven fabric sheets.

  In the past, when the elastic elastic member was fixed to the exterior sheet, it was bonded by applying a hot melt adhesive to the entire surface, but since the hot melt adhesive solidifies at room temperature, the exterior back sheet is hard in the product state. The touch and the feeling of wearing became bad.

In view of such a problem, in Patent Document 1 below, when the elastic members are sandwiched between two sheets and bonded together with an adhesive, the adhesive strength between the areas on both sides of the sheet is less than the area corresponding to the center of the pants. Disposable pants with a larger side are disclosed.
Japanese Patent No. 2774441

  According to the invention described in Patent Document 1, the outer sheet portion of the crotch portion can surely be softened. However, according to the study by the inventor of the present application, since the absorbent main body is disposed on the inner surface side of the crotch portion, the hardness of the exterior sheet is not a concern, but directly contacts the wearer's skin. It has been found that the waist shirring portion to be stiffened gives discomfort to the wearer.

  On the other hand, in order to give flexibility to the outer sheet of the waistline shirring part, if the amount of adhesive applied is reduced, it will be pulled in due to insufficient adhesive force of the elastic elastic member (part of the elastic elastic member is not fixed to the sheet, A new problem has arisen that the phenomenon of being drawn into

  Therefore, the main problem of the present invention is to soften the waist shirring portion that comes into direct contact with the wearer's skin and to firmly fix the elastic elastic member disposed on the waist shirring portion to the exterior sheet. It is to provide disposable disposable diapers.

As the present invention according to claim 1 to solve the above problems, two layers of the absorbent body including an absorbent body, Rutotomoni integrally provided on the outer surface side of the absorbent body, the upper non-woven fabric and the lower layer nonwoven fabric consists of a outer sheet constituted by the structure nonwoven, the waist opening and pair of leg openings by being bonded with the front body and the back body are on both sides of the exterior sheet product state is formed, the predecessor At the back and the back body , various elastic elastic members including a plurality of waist elastic elastic members arranged along the horizontal direction with an interval in the vertical direction between the upper layer nonwoven fabric and the lower layer nonwoven fabric are arranged, waist resilient and elastic members are discontinuous to finely cut the resilient and elastic members on the absorbent body, due to the waist resilient and elastic members in portions other than the cutting area of the waist resilient and elastic members A disposable paper diaper waist shirring is formed,
Wherein Upon bonding the resilient and elastic members against the outer sheet, the outside cutting area of the waist resilient and elastic members on the absorbent body, said waist shirring realm formed, the waist resilient and elastic members It is a partial adhesion method in which an adhesive is applied to a portion corresponding to the above, and a portion other than the region where the waistline shirring is formed is a full adhesion method in which an adhesive is applied to the entire exterior sheet ,
In the cutting region of the waist elastic elastic member on the absorbent main body, the adhesive is applied in a pattern so that the entire surface is adhered to the exterior sheet without applying the adhesive to the waist elastic elastic member. A disposable paper diaper is provided.

  In the present invention according to claim 1, the front body and the back body region where waist waist shirring is formed is a partial adhesion system in which an adhesive is applied to a portion corresponding to the waist elastic elastic member, and the waist waist For the portions other than the region where the shirring was formed, the entire surface adhesive method in which an adhesive was applied to the entire surface of the exterior sheet was adopted.

  Adopting different bonding methods for the waistline shirring part and other parts, it is fixed while adjusting the flexibility in each part of the disposable paper diaper. By restricting the application position to a portion corresponding to the elastic elastic member, and using a partial adhesion system in which the adhesive is not applied between the elastic elastic members, the amount and range of the adhesive are minimized, The exterior sheet of the waist shirring portion can be softened, and at least the elastic elastic member portion can be firmly fixed to the exterior sheet by applying an appropriate amount of adhesive.

As the present invention according to claim 2, the absorbent body including an absorbent body, Rutotomoni integrally provided on the outer surface side of the absorbent body, the exterior constituted by two-layer structure non-woven fabric of the upper non-woven fabric and the lower layer nonwoven fabric A waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the exterior sheet in both sides in a product state, and in the front body and the back body , Various elastic elastic members including a plurality of waist elastic elastic members arranged along the horizontal direction with an interval in the vertical direction between the upper layer nonwoven fabric and the lower layer nonwoven fabric are arranged, and the waist elastic elastic members are is discontinuous finely cut resilient and elastic members on the absorbent body, waist shirring shape at a portion other than the cutting area of the waist resilient and elastic members by the waist resilient and elastic members In disposable diapers,
Wherein Upon bonding the resilient and elastic members against the outer sheet, the outside cutting area of the waist resilient and elastic members on the absorbent body, said waist shirring realm formed, the waist resilient and elastic members And a partial adhesion method of applying an adhesive to a portion corresponding to the above, and a combined method of a full adhesion method of applying the adhesive to the entire exterior sheet with a low basis weight, and the portions other than the region where the waistline shirring is formed, It is a full surface adhesion method in which an adhesive is applied to the entire surface of the exterior sheet with a high basis weight,
In the cutting region of the waist elastic elastic member on the absorbent main body, the adhesive is applied in a pattern so that the entire surface is adhered to the exterior sheet without applying the adhesive to the waist elastic elastic member. A disposable paper diaper is provided.

  In the present invention described in claim 2, in the front body and the back body region in which waist waist shirring is formed, a partial adhesion method in which an adhesive is applied to a portion corresponding to the waist elastic elastic member; In this method, the entire surface of the exterior sheet is coated with an adhesive.

  In the waist shearing part, the partial adhesion method alone causes fluffing and opening of the cut at the cut part of the exterior sheet, and if this becomes a problem, the waist elastic elastic member can be firmly exteriorized by the partial adhesion method. After adhering to the sheet, a small amount of adhesive is applied over the entire surface with a low basis weight so as to ensure a minimum adhesive force that can prevent fluffing and opening of the cut. It should be noted that the amount of adhesive used per unit area, including the partial adhesion and the entire surface adhesion in the waistline shearing portion, is made smaller than the amount of adhesive used per unit area of the entire surface adhesion in the crotch portion.

  As a third aspect of the present invention, the partial adhesion method is an adhesion method in which the adhesive is applied to the outer surface of the waist elastic elastic member and is fixed to the exterior sheet. The disposable paper diaper described in 1. is provided.

  According to a fourth aspect of the present invention, the partial adhesion method is fixed to the exterior sheet by an adhesive applied in a streak pattern along the exterior sheet portion corresponding to the position where the waist elastic elastic member is disposed. A disposable paper diaper according to any one of claims 1 and 2 is provided.

  The present invention described in claims 3 and 4 shows a specific example of the partial adhesion method.

  As described above in detail, according to the present invention, the amount and range of the adhesive is minimized in the waist shirring portion that will be in direct contact with the wearer's skin, so that the softness of the sheet can be maintained, The elastic elastic member disposed in the waist shirring portion can be firmly fixed to the exterior sheet.

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

  FIG. 1 is a product state appearance view of a disposable paper diaper 1 according to the present invention, and FIG. 2 is a developed view thereof.

As shown in FIGS. 1 and 2, the present pants-type disposable paper diaper 1 (hereinafter simply referred to as a paper diaper) is provided between a liquid-permeable surface sheet 11 made of nonwoven fabric and a leak-proof sheet 12 made of polyethylene or the like. The absorbent main body 10 interspersed with an absorbent body 13 such as cotton pulp, and the exterior sheet 20 provided integrally on the outer surface side of the absorbent main body 10, and the predecessor of the exterior sheet 20 in a product state A pants-type disposable diaper having a structure in which a waist opening and a pair of left and right leg openings are formed by joining a back and a back body on both sides.
(Structure of the absorbent main body 10)
First, an example of the structure of the absorbent main body 10 will be described in detail based on FIG. 2 and FIG.

  As described above, the absorbent main body 10 has a structure in which an absorbent body 13 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 12 made of polyethylene or the like. And absorbs and retains body fluids.

  In the illustrated example, the absorbent body 13 is formed with a substantially square shape in plan view, and the width dimension thereof is a dimension width that does not give the wearer a feeling of gore by hitting the crotch portion. 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.

  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 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 side of the absorbent body 13 around the side edge of the absorbent body 13.

  The leak-proof sheet 12 covering the back surface side (non-skin contact surface side) of the absorbent body 13 is made of a liquid-impervious plastic sheet such as polyethylene or polypropylene, but in recent years 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, the gathered nonwoven fabric 15 that forms the three-dimensional gathered BS is a nonwoven fabric made into a double sheet by folding, and the side edge of the absorbent body 13 that is wound by the liquid-permeable surface sheet 11 is further wound from above. The absorber 13 extends to the back side and is bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather BS forming portion at 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 13 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 a range extending to the back surface side of the absorber 13, and the portion forming the three-dimensional gather BS is the absorber. While being folded at the upper surface portion of 13, it is bonded by a hot melt adhesive or the like.

  In the gathered nonwoven fabric 15 formed of the double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 16, 16... The thread-like elastic elastic members 16, 16,... Are for forming a three-dimensional gather BS by raising a non-woven fabric portion protruding from an absorber side edge portion by an elastic elastic force in a product state.

  The leak-proof sheet 12 enters the inside of the double sheet-like gathered nonwoven fabric 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gather BS. As the 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 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.

  As the thread-like elastic stretchable member 16, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like that are usually used can be used. Further, in order to make it difficult to see from the outside, it is preferable that the thickness is 925 dtex or less and the tension is 150 to 350%. 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 15 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. Further, with respect to the gathered nonwoven fabric 15, in order to prevent the transmission of urine and the like, to prevent fogging and to improve the feel to the skin (dry feeling), a silicon-based, paraffin-metal-based, alkylchromic chromoid-based water repellent It is desirable to use a water-repellent non-woven fabric coated with such as.

  As shown in FIG. 3, the absorbent main body 10 and the exterior sheet 20 are integrally bonded to the upper surface side of the exterior sheet 20 by an adhesive such as hot melt. Then, the absorbent main body 10 and the outer sheet 20 are folded in the front-rear direction, and both sides thereof are joined to each other by heat welding or hot melt adhesive, thereby assembling the pants-type paper diaper 1 shown in FIG. It is done.

(Structure of exterior sheet 20)
Next, the structure of the exterior sheet 20 will be described in detail based on FIG. 4 and FIG. 4 is a development view of the exterior sheet 20, and FIG. 5 is a view taken along the line VV in FIG.
The exterior sheet 20 is a two-layer nonwoven fabric sheet in which the upper nonwoven fabric 20A and the lower nonwoven fabric 20B are bonded by a predetermined method, and various elastic elastic members are bonded between the upper nonwoven fabric 20A and the lower nonwoven fabric 20B. Sex has been granted. The planar shape forms a pseudo hourglass shape as a whole by the concave leg circumference cut lines 29 for forming leg openings on both sides of the middle.

  In the exterior sheet 20 according to the present invention, as the elastic elastic member, as shown in the developed shape of FIG. 4, waist elastic elastic members 24, 24... Further, the back body B includes a plurality of waist elastic elastic members 25, 25,... Which are arranged along the horizontal direction at intervals in the vertical direction and for forming shearing around the waist.

  The waist elastic elastic members 24, 24... Are arranged in the vicinity of the waist opening edge in the range of the side joint edge 21 where the front body F and the back body B are joined, with an interval in the vertical direction. A plurality of elastic rubber elastic elastic members for attaching a disposable diaper to the body by applying an elastic force to tighten around the waist of the body. As the waist elastic elastic member 24, thread rubber is used in the illustrated example. However, for example, a tape-like elastic member may be used.

  The waist elastic elastic members 25, 25... Extend from the upper position to the lower position excluding the waist opening edge 23 of the side joint edge 21, or from the side joint edge 21 to the crotch side as shown in the figure. It is a rubber elastic elastic member that is arranged along the horizontal direction at intervals in the vertical direction over the range, and applies a horizontal elastic force to the waist part of the front body F and the back body B, respectively. This is for forming the waistline shearing zones K1, K2. It should be noted that the boundary between the waist elastic elastic members 24, 24... And the waist elastic elastic members 25, 25. For example, even if the number of elastic elastic members arranged in the horizontal direction with an interval in the vertical direction between the front body F and the back body B cannot be specified, some of the upper elastic members 24 on the upper side are provided. As long as the remaining elastic elastic member functions as the waist elastic elastic member 25.

  In the disposable diaper 1, when various elastic elastic members are bonded to the exterior sheet 20, an adhesive is applied to a portion corresponding to the waist elastic elastic member 25 in the waist shearing zones K 1 and K 2. In the crotch part M (hereinafter also referred to as the intermediate zone M) other than the waist shirring zones K1 and K2, a full adhesion method in which an adhesive is applied to the entire surface of the exterior sheet 20 is employed. Is done. In this embodiment, the elastic expansion / contraction member is not disposed in the crotch portion M. For example, when the elastic expansion / contraction member around the legs is disposed so as to cross the crotch part, or the front body and the back body are joined. Even when a curved elastic elastic member extending from one side of the side edge portion to the crotch side and bypassing the crotch portion to reach the other side edge is adopted for the crotch portion M, The elastic elastic member is fixed to the exterior sheet.

(How to assemble the exterior sheet 20)
The assembly procedure of the exterior sheet 20 will be described with reference to FIGS.
In the manufacture of the exterior sheet 20, the upper layer nonwoven fabric 20A is supplied from the upper side of the nip roller portion 30, and the lower layer nonwoven fabric 20B is supplied from the lower side. Elastic members (waist elastic elastic member 24, waist elastic elastic member 25) are supplied, and the upper nonwoven fabric 20A and the lower nonwoven fabric 20B are bonded together in the intermediate zone M, and in the waist shearing zones K1, K2. It is assembled by being partially bonded according to various embodiments described below. In this way, the amount of the adhesive can be adjusted so that the adhesive strength is different by making the entire surface in the middle zone M of the paper diaper and partially bonding in the waist shirring zones K1 and K2 of the paper diaper. .

In the intermediate zone M, it is desirable to perform the whole surface bonding with the basis weight of the adhesive being specifically 3 to 20 g / m ² , preferably 5 to 10 g / m ² .

In the intermediate zone M, the entire surface is bonded to at least one of the upper nonwoven fabric 20A and the lower nonwoven fabric 20B, in the illustrated example, in a region corresponding to the diaper intermediate zone M other than the waist shirring portion of the upper nonwoven fabric 20A. On the other hand, a hot melt adhesive is curtain-coated by the coater 32 to bond the upper nonwoven fabric 20A and the lower nonwoven fabric 20B. The hot melt adhesive includes, for example, EVA, adhesive rubber (elastomer), olefin, polyester / polyamide, and is not particularly specified. However, when an elastic stretchable member is disposed in the intermediate zone M, the adhesive rubber system (elastomer system) excellent in stretchability is used for the purpose of obtaining adhesive strength while maintaining the stretchability of the elastic stretchable member. Is desirable.
Next, the method of partial adhesion in the waist shearing zones K1 and K2 can be performed based on the following various embodiments.

(First example of partial adhesion method)
A first embodiment in which the elastic elastic member is fixed to the exterior sheet 20 will be described with reference to FIGS.

  In the waist shirring zones K1, K2, the waist elastic elastic members 24, 24... And the waist elastic elastic members 25, 25. It is a partial adhesion that is fixed to the exterior sheet 20 by an adhesive applied to the peripheral surface of the outer sheet.

  That is, in the waist circumference shearing zones K1, K2, for the waist elastic elastic members 25, 25..., After the hot melt adhesive is applied to the peripheral surface of the elastic elastic member 25 by the peripheral surface application device 31, It is fixed by being introduced into the sheet 20.

  For example, as shown in FIG. 8 (A), the peripheral surface application to the elastic elastic members 24, 25,... Uses a member 33a having a V-shaped groove and supplies an adhesive to the bottom of the groove. An application method using a comb gun 33 that passes the elastic elastic member through the groove while applying an adhesive by passing the elastic elastic member while the elastic member is bent as shown in FIG. 8B. Or a coating method called “sure wrap coating”. It is preferable to use the omega coating or the shure wrap coating in comparison with the comb gun coating, in which the adhesive is easily biased, in that the peripheral surface can be coated with high uniformity.

(Second example of partial adhesion method)
A second embodiment in which the elastic elastic members 24, 25, etc. are fixed to the exterior sheet 20 will be described with reference to FIG.
In the second embodiment, instead of the peripheral surface coating device 31, as shown in FIG. 9, at least one of the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B supplied at a predetermined feed rate, illustrated example Then, an adhesive jet nozzle 35 such as a curtain spray equipped with a slot coat gun or a plurality of linear spray nozzles is disposed on the back side of the upper layer nonwoven fabric 20A, and the adhesive is transferred from the adhesive jet nozzle 35 to the upper layer nonwoven fabric 20A. It is applied or sprayed to form a streak pattern corresponding to the arrangement position of the elastic elastic members 24, 25, and the elastic elastic members 24, 25,. Is done.

As the kind of the adhesive used in this embodiment, the same kind as that of the first embodiment can be used. In addition, you may make it form the streaky pattern of the said adhesive agent in both upper layer nonwoven fabric 20A and lower layer nonwoven fabric 20B.
As described above in detail, in the exterior sheet 20, the adhesive is entirely bonded in the intermediate zone M, and the adhesive is partially bonded to the portions corresponding to the elastic expansion and contraction members in the shearing zones K 1 and K 2. Such an effect can be expected.

(1) In the shearing zones K1 and K2, the adhesive strength between the elastic stretchable member and the upper nonwoven fabric 20A and the lower nonwoven fabric 20B can be maintained as before by the partial adhesion, but no adhesive is applied between the elastic stretchable members. Therefore, it is possible to maintain a soft touch feeling.
(2) Since the elastic elastic members 24, 25, ... are firmly fixed to the exterior sheet 20 by an adhesive applied to the peripheral surface or an adhesive applied in a streak shape, the elastic elastic members 24, 25 It is possible to eliminate the pull-in (disconnection). Further, since no adhesive is applied between the elastic stretch members 24, 25, the stretch force of the elastic stretch members can be more effectively exhibited.
(3) The adhesive can be applied in a streak pattern to the peripheral surfaces of the elastic elastic members 24, 25, or the exterior sheet 20, so that the total amount of the adhesive can be saved, and the effect of reducing the manufacturing cost is also expected. it can.
(4) Since the adhesive can be prevented from oozing out between the exterior nonwoven fabric sheets 20A and 20B and adhering to the equipment and the like, the operability is improved and the manufacturing management burden is reduced.

(Other examples of the bonding method of the waist shirring zones K1, K2)
The waist shirring zones K1, K2 to which the elastic elastic members 24, 25,... Are bonded according to the first embodiment or the second embodiment have an adhesive around the elastic elastic members 24, 25, and are elastic. The upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B are not bonded between the elastic members 24 ..., 25 ..., and the occurrence of fluffing and opening of the nonwoven fabric may be a problem at the cut portion.
In order to prevent fluffing and opening of the nonwoven fabric, the adhesive is applied only to the portion corresponding to the waist elastic elastic member 25... And the partial adhesion method according to the first and second embodiments. In addition, it is desirable to use a full adhesion method in which an adhesive is applied to the entire surface of the exterior sheet 20 with low weight. In this case, the entire surface adhesion method is performed with a low basis weight so as to secure a minimum adhesion force that can prevent fluffing and opening of the cut edge. Specifically, it is desirable to apply the entire surface of the adhesive with a basis weight of 0.3 to ²⁰ g / m ² , preferably 3 to 10 g / m ² , and the partial adhesion and the entire adhesion in the waist shearing zones K1 and K2. The combined use amount of the adhesive per unit area is set to be smaller than the use amount of the adhesive per unit area of the entire surface bonding in the intermediate zone M.

[Other examples]
(1) In the above embodiment, the waist elastic elastic members 25, 25... Arranged in the front body F and the back body B are arranged continuously on the absorbent main body 10. As shown in FIG. 11, the elastic elastic members 25... Crossing the absorbent main body 10 may be cut and discontinuous. By making the elastic elastic members 25... Discontinuous on the absorbent main body 10, the absorber 13 can be prevented from being contracted.
For example, as shown in Japanese Patent Application Laid-Open No. 2000-26015 and Japanese Patent Application Laid-Open No. 2002-273808, discontinuity of the elastic elastic member is performed by arranging various elastic elastic members on the exterior sheet 20 and then embossing cutter roll and anvil roll. The outer sheet may be passed 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.
In this case, with respect to the cutting region of the waist elastic elastic members 25, 25 ..., the adhesive is not applied to the peripheral surfaces of the waist elastic elastic members 25, 25 ..., and the entire surface is adhered to the exterior sheet 20 side. It is preferable to apply an adhesive pattern. As shown in FIG. 12, the application of the adhesive is controlled by arranging the first coater 32A in the region corresponding to the diaper intermediate zone M, and the waist elastic elastic members 25, The second coaters 32B and 32B are arranged at positions corresponding to the cutting regions 25, and the peripheral surface coating device 31 is provided so that an adhesive can be applied to the peripheral surfaces of the waist elastic elastic members 25, 25. Is disposed. Then, an adhesive is applied in a pattern so as to be partially (intermittently) adhered to the entire surface of the waist elastic elastic members 25, 25... By the second coaters 32B and 32B. The peripheral surface application by the surface application device 31 is performed by applying no adhesive to the region corresponding to the cutting region of the waist elastic elastic members 25, 25. What is necessary is just to control to apply | coat an adhesive agent with the coating device 31. FIG.

(2) In the above embodiment, both the waist elastic elastic members 24 and the waist elastic elastic members 25 are fixed to the exterior sheet 20 by a partial adhesion method. May be fixed to the exterior sheet 20 by the whole surface adhesion method.

It is a product state appearance view of disposable paper diaper 1 concerning the present invention. It is the development view. It is an exploded view of the disposable paper diaper. FIG. 3 is a development view of the exterior sheet 20. FIG. 5 is a view taken along line VV in FIG. 4. FIG. 4 is a schematic diagram showing an assembly procedure for an exterior sheet 20. It is a principal part top view (BB line arrow) of FIG. It is a figure which shows the application procedure example (A) (B) of the adhesive agent which concerns on a 1st form example. It is a figure which shows the example of the application procedure of the adhesive agent concerning a 2nd form example. It is a product state external view of the disposable paper diaper 1 which concerns on the other example of a form. FIG. It is a figure which shows the adhesive agent coating point in that case.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Disposable paper diaper, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Leak-proof sheet, 13 ... Absorber, 14 ... Crepe paper, 15 ... Gathered nonwoven fabric, 16 ... Filament elastic elastic member, 20 ... Exterior Sheet, 20A ... upper layer nonwoven fabric, 20B ... lower layer nonwoven fabric, 21, 22 ... side joint edge, 23 ... around waist opening, 24 ... waist elastic elastic member, 25 ... waist elastic elastic member, 29 ... leg circumference cut line , 30 ... Nip roller, 31 ... Comb gun, 32 ... Coater, F ... Front body, B ... Rear body, K1, K2 ... Hip shirring zone, M ... Intermediate zone

Claims (4)

An absorbent body including an absorbent body made of the integrally provided on the outer surface side of the absorbent body Rutotomoni, the outer sheet constituted by two-layer structure non-woven fabric of the upper layer nonwoven fabric and the lower layer nonwoven fabric, the product state A waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the exterior sheet on both sides, and in the front body and the back body , between the upper layer nonwoven fabric and the lower layer nonwoven fabric. Various elastic elastic members including a plurality of waist elastic elastic members arranged along the horizontal direction at intervals in the vertical direction are arranged, and the waist elastic elastic members are elastic elastic members on the absorbent main body. is a finely cut and discontinuous, your disposable diapers waist shirring is formed by the waist resilient and elastic members in portions other than the cutting area of the waist resilient and elastic members Te,
Wherein Upon bonding the resilient and elastic members against the outer sheet, the outside cutting area of the waist resilient and elastic members on the absorbent body, said waist shirring realm formed, the waist resilient and elastic members It is a partial adhesion method in which an adhesive is applied to a portion corresponding to the above, and a portion other than the region where the waistline shirring is formed is a full adhesion method in which an adhesive is applied to the entire exterior sheet ,
In the cutting region of the waist elastic elastic member on the absorbent main body, the adhesive is applied in a pattern so that the entire surface is adhered to the exterior sheet without applying the adhesive to the waist elastic elastic member. A disposable paper diaper characterized by that. An absorbent body including an absorbent body made of the integrally provided on the outer surface side of the absorbent body Rutotomoni, the outer sheet constituted by two-layer structure non-woven fabric of the upper layer nonwoven fabric and the lower layer nonwoven fabric, the product state A waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the exterior sheet on both sides, and in the front body and the back body , between the upper layer nonwoven fabric and the lower layer nonwoven fabric. Various elastic elastic members including a plurality of waist elastic elastic members arranged along the horizontal direction at intervals in the vertical direction are arranged, and the waist elastic elastic members are elastic elastic members on the absorbent main body. is a finely cut and discontinuous, your disposable diapers waist shirring is formed by the waist resilient and elastic members in portions other than the cutting area of the waist resilient and elastic members Te,
Wherein Upon bonding the resilient and elastic members against the outer sheet, the outside cutting area of the waist resilient and elastic members on the absorbent body, said waist shirring realm formed, the waist resilient and elastic members And a partial adhesion method of applying an adhesive to a portion corresponding to the above, and a combined method of a full adhesion method of applying the adhesive to the entire exterior sheet with a low basis weight, and the portions other than the region where the waistline shirring is formed, It is a full surface adhesion method in which an adhesive is applied to the entire surface of the exterior sheet with a high basis weight,
In the cutting region of the waist elastic elastic member on the absorbent main body, the adhesive is applied in a pattern so that the entire surface is adhered to the exterior sheet without applying the adhesive to the waist elastic elastic member. A disposable paper diaper characterized by that.   The disposable paper diaper according to any one of claims 1 and 2, wherein the partial adhesion method is an adhesion method in which the adhesive is applied to a peripheral surface of the waist elastic elastic member and fixed to the exterior sheet.   The partial adhesion method is an adhesion method in which the adhesive is applied to the exterior sheet with an adhesive applied in a streak pattern along the exterior sheet portion corresponding to the position where the waist elastic elastic member is disposed. 2. The disposable paper diaper according to any one of 2 above.

Images