JP4839315B2 - Disposable diapers - Google Patents

Description

  The present invention mainly relates to a pants-type disposable diaper that can adjust the fit to the body.

  Conventionally, in pants-type disposable diapers, an elastic body that absorbs body fluid is attached to the body, so various elastic elastic members are placed on the exterior sheet that holds the absorbent body to improve the fit to the body. ing.

  For example, in Patent Document 1 below, as shown in FIG. 21, a liquid-permeable top sheet 50, a liquid-impermeable back sheet 51, and an absorbent body 52 disposed between both the sheets 50 and 51 are provided. A pants-type disposable paper diaper in which both sides of the front body and the back body are joined to form a waist opening and a pair of leg openings, and the waist elastic elastic member along the circumference of the waist opening .., And leg elastic members 53, 53... Are arranged substantially continuously along the periphery of the leg openings, and a waist elastic elastic member 49 around the waist. , 49... Are arranged to fit the disposable diaper to the body.

  Further, in Patent Document 2 shown below, as shown in FIG. 22, a first elastic elastic member 55 made of an absorbent main body and an exterior member, and made of a plurality of elastic elastic materials on the front body and the back body of the exterior member, respectively. , 55... And second stretchable elastic members 56, 56..., And these stretchable elastic members 55. A pants-type disposable diaper is disclosed in which at least a part of the diaper is disposed along a pair of leg openings and the crotch portion is disposed at regular intervals.

Furthermore, in Patent Document 3 below, in order to further prevent slippage, a body having a top sheet, a back sheet, and an absorber is provided as shown in FIG. The waist opening and the leg opening are formed by joining and fixing the left and right side edges of each of the abdomen and the dorsal side, and the waist opening and the leg opening are The waist elastic member 57 and the leg elastic member 58 that form a substantially continuous gather along the entire circumference of each peripheral portion are disposed, and a plurality of waist elastic members 57 and / or dorsal sides of the waist elastic member are arranged. Are arranged in a shape displaced toward the crotch part, and the amount of displacement of the waist elastic member 59.59. Is the largest disposable pouch at the center of the ventral side Tsu-type diaper is disclosed.
JP-A-7-265357 JP-A-11-36103 JP 2001-258931 A

  In the pants-type disposable diaper, as described above, the elastic stretchable member is independently provided in each of the three portions of the waist opening, the leg opening, and the waistline to ensure fit to the body. I am doing so. However, although the above-mentioned various elastic elastic members can provide the minimum fit, the body has great individual differences, and the user's satisfaction is not necessarily obtained.

Then, the main subject of this invention is providing the disposable diaper which made fit adjustment possible arbitrarily according to an individual difference other than ensuring the fitting property to a body with an elastic expansion-contraction member.
A second problem is to enable a pants-type disposable diaper to be mounted in the manner of a tape-type disposable diaper.

In order to solve the above-mentioned problems, the present invention according to claim 1 is composed of an absorbent main body including an absorbent body and an exterior sheet provided on the outer surface side of the absorbent main body. In a pants-type disposable diaper in which a waist opening and a pair of left and right leg openings are formed by joining the body to both sides,
The exterior sheet includes a waist elastic elastic member disposed around the waist opening, and a plurality of waist elastic elastic members disposed along the horizontal direction with an interval in the vertical direction between the front body and the back body. With
Side extension flaps that extend outward from the joint portion by exterior sheet portions constituting one of the front body and the back body at both sides where the front body and the back body are joined. The side extension flaps are provided with mechanically engaging fastener means, the side extension flaps of the one body are picked and engaged with the outer surface of the other body, and the waist In the elastic waist member, the elastic force of the waist elastic member arranged on the one body side is set lower than the elastic force of the waist elastic member arranged on the other body side. A featured disposable diaper is provided.

In the first aspect of the present invention, at both sides where the front body and the back body are joined, the exterior sheet portion constituting one of the front body and the back body is more outward than the joint. Side extension flaps are formed, and these side extension flaps are provided with mechanically engaging fastener means. If the pants-type disposable diaper is worn and the fit to the body is not sufficient, the fit is arbitrarily adjusted by picking the side extension flap and engaging with the outer surface of the other body. It becomes possible.
Further, in the present invention, from the viewpoints of manufacturing superiority, fit to the body, etc., the side extension flap is constituted by an exterior sheet portion constituting one of the front body and the back body. It is.

In the present invention, the elastic force of the waist elastic elastic member disposed on the one body side is set lower than the elastic force of the waist elastic elastic member disposed on the other body side, and as a result. In the state before use, since the elastic force of the waist elastic elastic member on the other body side is relatively high, the side part extending flap of the one body is directed toward the inside of the other body and operated. When the fit adjustment is performed from the wearing state, the elastic force of the waist elastic elastic member of one body is set to be relatively low. It becomes easy to draw.

  In order to solve the second problem, as the present invention according to claim 2, as a side part of the other body, a joined part in which a front body and a rear body of the exterior sheet are joined at both side parts and an absorptive The disposable diaper according to claim 1, wherein a tear perforation for separating the front body and the back body is formed at a position between the main bodies.

  In the invention described in claim 2, when further adjusting the fit, the tear perforation is broken, the front body and the back body are separated, and worn on the body in the manner of a tape-type diaper. Can do.

  As a third aspect of the present invention, there is provided the disposable diaper according to the second aspect in which a waist elastic elastic member is fixed by providing a seal portion inside the tear perforation.

As the present invention according to claim 4, there is provided the disposable diaper according to any one of claims 1 to 3 , wherein the product width of the one body is wider than the product width of the other body.

As the present invention according to claim 5, wherein the side portions extending flaps and the upper and lower divided structure, according to claim 1-4 or the each of the upper side and lower side of the side portion extending flaps comprising said mechanical engagement fastener means The disposable diaper described in 1. is provided.

The invention according to claim 5 is such that the side extension flaps are divided into upper and lower parts, and each of the upper side and lower side extension flaps is provided with the mechanical engagement type fastener means. By dividing the part extending flap into upper and lower parts, 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.

A tearing sewing machine for separating the upper side side part extension flap and the lower side side part extension flap between the upper side side and lower side side extension flaps as the present invention according to claim 6. A disposable diaper according to claim 5, wherein the eye is formed.

In the invention of claim 6 above, when mounting, there is a cross stopper that cuts the tear perforation and joins the upper stage side part extension flap and the lower stage side part extension flap so as to cross each other. It becomes possible.

As the present invention according to claim 7 , the mechanical joint type fastener means is provided on the outer surface side of the side part extending flap of the one body, the belt passage is provided on the outer surface side of the other body, The disposable diaper according to any one of claims 1 to 6 , wherein the disposable diaper is configured so as to be fixed by being folded outward after passing through the side part extension flap of one body.

  As described above in detail, according to the present invention, it is possible to adjust the fit according to individual differences in addition to ensuring the fit to the body by the elastic elastic member.

  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 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. FIG. In addition, the adhesion | attachment site | part is clearly shown by x mark in the required site | part of drawing.

  As shown in the figure, the pants-type disposable paper diaper 1 (hereinafter simply referred to as a paper diaper) is placed between a liquid-permeable surface sheet 11 made of a nonwoven fabric and a leak-proof sheet 12 made of polyethylene or the like. It is a paper diaper having a structure in which an exterior sheet 20 is disposed on the outer surface side of an absorbent main body 10 with an absorbent body 13 made of a shaped pulp or the like interposed.

The exterior sheet 20 is disposed along the horizontal direction with an interval in the vertical direction between the waist elastic elastic members 25, 26, and the front body F and the back body B disposed around the waist opening. A plurality of waist elastic elastic members 27... 28, and side portions extending outward from the joints 30 and 31 at both sides where the front body F and the back body B are joined. While having the flap 32, the front side of this side part extension flap 32 is provided with the mechanical engagement type fastener means 33 which can be engaged with the outer surface of the front body F.
Hereinafter, the structure of the absorptive main body 10 and the exterior sheet 20, the assembly structure, and the manufacturing method will be described in order.

(Structure of the absorbent main body 10)
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 the 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 capable of reducing 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, as the gathered nonwoven fabric 15 forming the three-dimensional gathered BS, as shown in FIGS. 3 and 4, a nonwoven fabric made into a double sheet by folding is used, and the absorbent body 13 engulfed by the liquid-permeable surface sheet 11 is used. These side edges are further wound from the upper side and extended to the back side of the absorbent body 13 to be bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather BS forming portion in the middle part in the longitudinal direction of the paper diaper shown in FIG. 3, and the range from the middle part 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 end edge is adhered in a range extending to the back surface side of the absorber 13. The portion forming the three-dimensional gather BS is bonded with a hot melt adhesive or the like while being folded at the upper surface portion of the absorbent body 13.

  In the gathered nonwoven fabric 15 formed of the double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 16, 16... Are disposed at the standing tip side portion, and in the vicinity of the side edge portion of the absorbent body 13. A thread-like elastic expansion / contraction member 17 is disposed, and a thread-like elastic expansion / contraction member 18 is disposed on the back side of the absorber 13. The tip elastic elastic members 16, 16... Are mainly used to form a three-dimensional gather BS by raising a nonwoven fabric portion protruding from the absorber side edge portion by elastic elastic force. 17 and 18, as shown in the product state diagram of FIG. 5, mainly due to its elastic expansion and contraction force, the side portion of the absorber 13 is bent, and the base end side portion of the three-dimensional gather BS is 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 absorber side, and it is impossible to ensure sufficient fit to the skin. Further, when the standing height HL exceeds 30 mm, there arises a problem that the standing length is too long to bend effectively.

  The leak-proof sheet 12 enters the double sheet-shaped gather nonwoven fabric 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gather BS as shown in FIG. 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 elastic members 16 to 18, 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 are used. it can. 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. Therefore, it is preferable to use a nonwoven fabric that suppresses the basis weight and has 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 water-repellent It is desirable to use a water-repellent non-woven fabric coated with such as.

(Structure of exterior sheet 20)
As shown in FIGS. 2 and 6, the exterior sheet 20 is a two-layer nonwoven fabric sheet composed of an upper nonwoven fabric 20 </ b> A and a lower nonwoven fabric 20 </ b> B, and various elastic elastic members are provided between the upper nonwoven fabric 20 </ b> A and the lower nonwoven fabric 20 </ b> B. Arranged and stretchable. The planar shape has a pseudo hourglass shape as a whole by a leg-around cut 29 for forming a leg opening in the middle part.
In the exterior sheet 20 according to the present invention, as the elastic member, in the developed shape shown in FIG. 2, waist elastic elastic members 25, 26. The waist circumferences 22, 24 of the F and the back body B have a plurality of waist elastic elastic member groups 27, 28,... Arranged in the horizontal direction at intervals in the vertical direction.

  The waist elastic members 25 ..., 26 ... are a plurality of strips arranged 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. A rubber elastic elastic member that attaches a disposable diaper to the body by applying an expansion / contraction force to tighten around the waist of the body. The waist elastic elastic members 25, 26,... Use thread rubber in the illustrated example. However, for example, tape-like elastic members may be used.

  The waist elastic member groups 27, 28,... Are arranged along the horizontal direction at intervals in the vertical direction over the range from the upper part to the lower part of the side part joining range. It is an elastic elastic member in the form of a rubber, which applies a horizontal expansion / contraction force to the waist part of the front body F and the back body B, respectively, and causes the paper diaper to adhere to the body. The boundary between the waist elastic members 25, 26, and the waist elastic members 27, 28, does not necessarily have to be clear. For example, among the elastic members arranged in the horizontal direction with an interval in the vertical direction on the front body F and the back body B, even if the number cannot be specified, some on the upper side function as waist elastic members. The remaining elastic members only have to function as waist elastic members.

  Further, the waist elastic member groups 27, 28,... May be continuously arranged so as to cross over the absorbent main body 10. However, as shown in FIG. In order to prevent this, it is preferable to cut the elastic elastic member across the absorbent main body 10 to make it discontinuous.

  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 expansion and contraction member is performed by disposing various elastic members on the exterior sheet 20 and then embossing cutter rolls and anvil rolls. It is only necessary to pass an exterior sheet between them and finely cut an elastic member existing within a predetermined range by pressing or heating with the embossing cutter roll.

Wherein the outer sheet 20 is a product width L _B is wider than the product width L _F of the front body F of the back body B, in the back body B, heat to the back body B and the front body F is bonded The side part extension flaps 32 and 32 that extend outward from the seal part 30 are provided, and the side part extension flaps 32 can be engaged with the outer surface of the front body F on the front side in the product state. Mechanically engaging fastener means 33 is provided. The protruding length (K) of the side extension flap 32 is 10 to 50 mm, preferably 15 to 30 mm.

  The mechanical joining 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. The hook element 33b is, for example, a letter shape, a J shape. , Mushroom shape, T-shaped, etc., and can be engaged with the outer surface of the exterior sheet 20 (lower layer nonwoven fabric 20B). Moreover, the said mechanical joining type fastener means 33 may stick a target tape (female side fastener) separately to the front body F, and may make it engage with this. In addition, the said side part extension flap 32 part is folded inward in the product state (before use), and is joined to the outer surface of the exterior sheet 20.

  In the exterior sheet 20, the waist elastic elastic members 27, 28... Are provided with the elastic force of the waist elastic elastic members 28, 28 arranged on the back body B side on the front body F side. It is desirable to set it lower than the elastic force of the elastic elastic members 27, 27. By providing such a tension difference, the stretchable force of the waist elastic elastic members 27, 27,... On the front body F side is relatively high in the state before use, so that the side extension flap 32 is on the inside. It becomes easier to operate. Further, when performing the fit adjustment from the mounted state, the elastic force of the waist elastic elastic members 28, 28... Of the back body B is set to be relatively low. It becomes easy to draw toward the F side.

(Assembling paper 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 an adhesive such as hot melt. And the absorptive main body 10 and the exterior sheet | seat 20 are folded up in the front-back direction by the folding line S, and the joining parts 31 and 31 of the front body F and the joining parts 30 and 30 of the back body B are heat-welded or hot-melt-bonded. The pants-type paper diaper 1 shown in FIG. 1 is assembled by bonding with an agent or the like.

(Manufacture of disposable diapers)
FIG. 7 is an assembly process diagram in the case of the lateral flow method in which the line direction is the paper diaper width direction. In the process of feeding out the continuous web of the exterior sheet 20, a portion that becomes a crotch is cut out along an elliptical leg periphery cut line 36 by a roll cutter or the like. Thereafter, the two mechanical joint-type fastener means 33 and 33 are pasted on the side portion corresponding to the side part of the rear body B, which is the upper side of the leg-cut line 36, and the oval cut-out portion is pasted. Are laminated with a hot melt adhesive. After that, if the front body F side is cut at the product width L _F position between the absorbent main bodies 10 and 10, the front body F side is turned back by the sailor 34, and the joint parts 31, 31 of the front body F and the back body After joining the joint portions 30 and 30 of B by heat welding or hot melt adhesive, the pants-type disposable diaper 1 is obtained by cutting at the center of the two mechanical joining fastener means 33 and 33.

  Next, a second example of the manufacturing method is shown in FIG. First, in the process of feeding the continuous web of the exterior sheet 20, a portion that becomes the crotch is cut out along an elliptical leg-cut line 36 by a roll cutter or the like. After that, the two mechanical joint-type fastener means 33, 33 are pasted on the side corresponding to the side part on the back body side, which is the upper side of the leg-cut line 36, across the planned cutting line, and the oval cut-out portion is attached. The absorbent main bodies 10, 10... Are laminated with a hot melt adhesive so as to straddle. 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 joint parts 31, 31 of the front body F and the rear After joining the joining parts 30 and 30 of the body B by heat welding or hot melt adhesive, etc., it cut | disconnects in the center of the two mechanical joining type fastener means 33 and 33, and the underpants type disposable diaper 1 is obtained. In this case, when joining the joining parts 31 and 31 of the front body F and the joining parts 30 and 30 of the back body B by heat welding or hot melt adhesive, the joining part 31 of the front body F is mechanically joined. It joins, shifting a phase so that it may match with joint part 30 outside type fastener means 33.

  Furthermore, the 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 and 31 of the front body F and the joining parts 30 and 30 of the back body B are heat-welded or hot-melt adhesive. 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 portion extending flap, the mechanical joint type fastener means 33 can be exposed.

  By the way, in the above embodiment, the two mechanical joint-type fastener means 33 and 33 are stuck to the side portion corresponding to the back body side B across the planned cutting line, but as shown in FIG. Further, after sticking one piece of the 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 embodiment]
Next, a second embodiment of the exterior sheet 20 will be described in detail based on FIG.
In the rear body B, the exterior sheet 20 shown in FIG. 11 has side extension flaps 32 that extend outward from the heat seal portions 30 and 31 to which the front body F and the rear body B are joined. 32 has a vertically divided structure, and the mechanical engagement type fastener means 33A and 33B are provided in each of the upper stage side part extension flap 32A and the lower stage side part extension flap 32B. By making the side part extension flap 32 have the above-described divided structure, fit adjustment around the waist opening and fit adjustment around the waist can be independently performed, and the fit can be further improved. In this case, in order to ensure a fit adjustment allowance by the upper side side extension flap 32A and the lower side extension extension flap 32B, the waist circumference section A corresponding to the position of the upper side extension extension flap 32A, and the lower stage The waist elastic elastic member 26 (in some cases) disposed in the waist circumference section A in the waist circumference section C corresponding to the position of the side arm extension flap 32B and the waist area B where no side extension flap exists. Includes a part of the waist elastic elastic member 28) and the elastic force of the waist elastic elastic members 28, 28,... Arranged in the waist section C. It is desirable to set it lower than the expansion / contraction force of the expansion / contraction members 28,. That is, a higher fit can be obtained by giving a degree of freedom of adjustment to a waist portion to which the upper side side extension flap 32A and the lower side extension extension flap 32B are attached.

  As shown in FIG. 12, the side part extension flap having the vertically divided structure constitutes the protruding length of the side part extension flap, and the upper stage side part extension flap 32 </ b> A and the lower stage side part extension flap. Tear perforations 37 and 38 may be formed in the flap between 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. In mounting, the tearing perforations 37 and 38 are torn, and the cross stop that joins the upper stage side part extension flap 32A and the lower stage side part extension flap 32B to cross each other is possible.

[Third embodiment]
In the first and second embodiments, the front side of the side extension flap 32 is provided with the mechanical engagement type fastener means 33 that can be engaged with the outer surface of the front body, and fits to the body with the disposable diaper 1 attached. In the case where the performance is not sufficient, the side part extending flap 32 is picked and pulled to the front body F side and joined to the outer surface of the exterior sheet 20 so that the fit is arbitrarily adjusted. In order to be able to adjust the fit in a state of being high or high, a 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. That's fine.

More specifically, as shown in FIG. 13, the in outer sheet 20 is a product width L wider than _B product width L _F is the back body B of the front body F, the in front body F, predecessor The side part extension flaps 32, 32 extending outward from the heat seal part 31 to which the front part F and the back part B are joined are provided, and the side part extension flaps 32 are on the back side in the product state. The surface is provided with mechanically engaging fastener means 33 that can be engaged with the outer surface of the rear body B.
In this case, contrary to the first embodiment, in the exterior sheet 20, the waist elastic elastic members 27 ..., 28 ... are waist elastic elastic members 28, 28 ... arranged on the front body F side. Is preferably set lower than the elastic force of the waist elastic elastic members 27, 27... Arranged on the back body B side.

[Fourth embodiment]
In the first to third embodiments, the exterior sheet 20 is composed of one laminated sheet obtained by bonding the upper nonwoven fabric 20A and the lower nonwoven fabric 20B. As shown in FIG. It is also possible to have a structure in which the outer exterior sheet portion GF and the rear body exterior sheet portion GB are separated.
[Fifth embodiment]
In each of the above-described embodiments, the side extension flap 32 is formed in a rectangular shape by extending the end width of the front body F as it is, but can be formed in various shapes as shown in FIG. is there. For example, as shown in FIG. 15 (A), the flap shape may be formed in a trapezoidal shape with side extension flaps 32A and 32B in two steps, and as shown in FIG. 15 (B), A single side extension flap 32 may be formed in a trapezoidal shape. Further, as shown in FIG. 15C, the side extension flaps 32A and 32B may be formed in a mushroom shape in two upper and lower stages. Good.

[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, in order to enlarge the adjustable range, as shown in FIGS. 16 and 17, at 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. Further, a tear perforation 39 on the inner side of the heat seal portion 30, specifically at a position between the heat seal portion 30 and the absorbent main body 10, preferably at a position near the inside of the heat seal portion 30. Can be provided.

  In this case, the connection between the front body F and the back body B is released by tearing at the tear perforation 39, and the front body F and the back body B are applied to the body just like a tape-type diaper. After that, the side part extension flap 32 can be pulled toward the front body side, and can be attached and attached at an arbitrary position. In this case, a number, a mark, or a design may be given to the front body F so that it becomes a standard of the joining position of the side part extension flap 32.

  Further, when the tear perforation 39 is torn, the end fixing of the waist elastic elastic members 28, 28... May be released and the elastic members may be retracted. It is desirable to provide a side seal 40 inside the tear perforation 39 for fixing the waist elastic elastic members 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.

[Seventh embodiment]
Furthermore, after tearing at the tear perforation 39, when mounting in the manner of a tape-type diaper, the outer surface of the front body F is shown in FIG. The belt loops 41, 41... May be provided on the 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 extension flap 32 is passed through a predetermined belt loop 41 during mounting. It joins to the outer surface of 20. 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). If 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, so that the fastener means 33 can be reliably prevented from coming off during wearing. become.

[Other examples]
(1) The above embodiments are all examples of a pants-type disposable diaper, but the step of joining the front body F and the back body B of the exterior sheet is simply omitted, so-called tape-type disposable. It is possible to obtain a product equivalent to a diaper. Conventionally, a tape-type disposable diaper had 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-described pants-type disposable diaper, the elastic elastic members disposed on the exterior sheet 20 are spaced apart from the waist elastic elastic members 25, 26, and the front body F and the back body B in the vertical direction. In this embodiment, the elastic waist elastic members 27, 28,... Are arranged along the horizontal direction, but elastic elastic members can be arranged around the legs.
(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 With a joint position at a slightly inward side from the side edge, and a mechanical joint type fastener means 33 is affixed to the outer surface of the front body or the back of the front body that extends outward from the joint position. You may make it wear.
(4) In the second embodiment, 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 adhered to each. May be.
(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 back body side exterior sheet.
(6) In the first embodiment and the second embodiment, the side extension flap 32 and the fastener means 33 are provided on the side of the back body B, and the perforation 39 is provided on the side of the front body F. In the third embodiment, the side part extending flap 32 and the fastener means 33 are provided on the side of the front body F, and the perforation 39 is provided on the side of the back body B. However, the back body B and the front body F are provided. The side extension flap 32, the fastener means 33, and the perforation 39 may be provided on both of them. In this way, since it can be used in the same way both before and after, for example, in use in a state where the wearer lies down, the size is adjusted, or after fixing the zipper means 33 after breaking the side part with a perforation, When doing so, there is no inconvenience of inserting and fixing a tape under the body, whether the wearer is lying down or lying on his back.
(7) In the above embodiments, the side extension flaps 32 and 32 are formed on both sides of the back body B and / or the front body F, but the side extension flaps 32 are formed only on one side. You may do it. Even in this case, fit adjustment can be performed at the time of mounting, and the number of parts of the mechanical engagement type fastener means 33 having a high material cost can be reduced.

It is a product external view of the underpants type disposable paper diaper 1 which concerns on the 1st form example of this invention. It is the development view. It is the III-III arrow directional view of FIG. It is the IV-IV arrow line view of FIG. FIG. 3 is an equivalent view taken along line III-III in FIG. 2 in a product state. FIG. 3 is an exploded perspective view of the absorbent main body 10 and the exterior sheet 20. It is a manufacture outline figure of the underpants type disposable diaper 1 (the 1). It is a manufacturing procedure figure of the underpants type disposable diaper 1 (the 2). It is a manufacturing procedure figure of the underpants type disposable diaper 1 (the 3). It is a principal part top view which shows the other example of attachment of the mechanical joining type fastener means 33. FIG. It is an expanded view of the exterior sheet 20 which concerns on a 2nd form example. (A), (B) is the principal part expanded view which showed the example of perforation formation for the tearing to the split type | mold side part extension flap 32. FIG. It is an expanded view of the underpants type disposable paper diaper which concerns on a 3rd form example. It is a diaper development view showing 20 examples of exterior sheets concerning the 4th form example. (A)-(C) are the principal part top views which show the example of a shape of the side part extension flap 32 which concerns on a 5th example. It is a product external view of the underpants type disposable paper diaper 1 which concerns on a 6th form example. It is the development view. It is a principal part expanded view which shows the modification of the exterior sheet 20 in the example of the underpants type disposable paper diaper which concerns on a 6th form example. It is an expanded view of the underpants type disposable paper diaper which concerns on a 7th form example. FIG. It is the expanded view and product figure which show the conventional underpants type disposable diaper. It is an expanded view which shows the conventional underpants type disposable diaper. It is an expanded view which shows the conventional underpants type disposable diaper.

  DESCRIPTION OF SYMBOLS 1 ... Pants type disposable diaper, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Leak-proof sheet, 13 ... Absorber, 14 ... Crepe paper, 15 ... Gathered nonwoven fabric, 16-18 ... Thread-like elastic elastic member , 20 ... exterior sheet, 21/23 ... waist opening, 22/24 ... waistline, 25/26 ... waist elastic elastic member, 27/28 ... waist elastic elastic member, 29 ... leg circumference cut, 32 ... side Partially extended flap, 33 ... mechanically joined fastener means

Claims (7)

It consists of an absorbent main body including an absorbent body and an exterior sheet provided on the outer surface side of the absorbent main body. In a pants-type disposable diaper in which a pair of leg openings are formed,
The exterior sheet includes a waist elastic elastic member disposed around the waist opening, and a plurality of waist elastic elastic members disposed along the horizontal direction with an interval in the vertical direction between the front body and the back body. With
Side extension flaps that extend outward from the joint portion by exterior sheet portions constituting one of the front body and the back body at both sides where the front body and the back body are joined. The side extension flaps are provided with mechanically engaging fastener means, the side extension flaps of the one body are picked and engaged with the outer surface of the other body, and the waist In the elastic waist member, the elastic force of the waist elastic member arranged on the one body side is set lower than the elastic force of the waist elastic member arranged on the other body side. Disposable diaper featuring.   For separating the front body and the back body at the position between the absorbent body and the joint body where the front body and the back body of the exterior sheet are joined on both sides of the side body of the other body The disposable diaper according to claim 1, wherein a tear perforation is formed.   The disposable diaper according to claim 2, wherein a waist elastic elastic member is fixed by providing a seal portion inside the tear perforation. The disposable diaper in any one of Claims 1-3 which formed the product width of said one body wider than the product width of said other body. The disposable diaper according to any one of claims 1 to 4, wherein the side extension flap has a vertically split structure, and each of the side extension flaps on the upper side and the lower side includes the mechanically engaging fastener means. Between the upper side and the lower side of the side portion extending flaps, claim 5 is formed with tear perforation for separating the upper stage side side portion extending flap and the lower-side side portion extending flap The disposable diaper described. The mechanical joint type fastener means is provided on the outer surface side of the side extension flap of the one body, the belt passage is provided on the outer surface side of the other body, and the side extension flap of the one body is provided on the belt passage. The disposable diaper according to any one of claims 1 to 6 , wherein the disposable diaper is configured to be fixed outwardly after passing through.

Images