JPWO2013099554A1 - Pants-type diaper and manufacturing method thereof - Google Patents

Abstract

A front part (20) covering the abdomen side of the wearer, a back part (21) covering the back side of the wearer, and a crotch part (22) between the front part (20) and the back part (21) A diaper body (2) having one side panel (3) connecting one side edge of the front part (20) and one side edge of the back part (21) in the waistline direction, and the front Another side edge separated from the one side edge of the part (20) in the waistline direction and another side edge separated from the one side edge of the back part (21) in the waistline direction; A side panel (3) that is connected to the waistline direction, and a pants-type diaper, wherein each side panel (3) is seamlessly continuous in the waistline direction, and A thread-like elastic member (F) extending in the waistline direction; Including a pair of web (W) to sandwich the elastic member.

Description

  The present invention relates to a pants diaper and a method for manufacturing the same.

  Conventionally, a plurality of unseparated diaper bodies are continuously conveyed, and side panels are joined to both sides of a front part and a back part of the diaper body. A method for manufacturing a pant-type diaper is proposed in which the diaper body is folded at the crotch portion and the side panel of the front portion and the side panel of the back portion are joined to each other (see Patent Document 1).

JPH2-140163 (Figs. 2, 5 and 6) WO2010 / 032396A1

In the invention disclosed in Patent Document 1, pants are formed by sealing the side of an elastic film (film) side panel. Such elastic film-like material has low stretchability. The elastic film-like material is expensive. Therefore, it becomes a factor that increases the product cost (cost).
Patent Document 2 does not disclose any material for forming the side panel.

  Accordingly, an object of the present invention is to reduce the cost of the pant diaper and improve the stretchability of the side panel.

The diaper of the present invention is
A front part covering the abdomen side of the wearer, a back part covering the back side of the wearer, and a diaper body having a crotch part between the front part and the back part;
One side panel that connects one side edge of the front part and one side edge of the back part in the waistline direction;
Another side edge portion that is separated from the one side edge portion of the front portion in the waistline direction and another side edge portion that is separated from the one side edge portion of the back portion in the waistline direction are the waistline direction. A pants-type diaper provided with another side panel, wherein each of the side panels is
It includes a thread-like elastic member that is continuous in the waistline direction and extends in the waistline direction, and a pair of webs that sandwich the elastic member.
In the present invention, the thread-like elastic member includes a rubber thread and a hot melt resin, and is a member that extends greatly and can shrink to the original length or a length close to the original length. Say.

According to the present invention, the side panel is formed by sandwiching a thread-like elastic member between a pair of webs. Therefore, the cost is lower than that of a conventional diaper using an elastic film.
Further, the thread-like elastic member is easily expanded and contracted as compared with the elastic film. Therefore, the fit feeling is improved.

On the other hand, the method of the present invention includes a step of transporting the diaper body in a longitudinal direction orthogonal to the waistline direction;
A first folding step of folding each side panel along a virtual first line extending in the vertical direction so that the first part and the second part of each side panel overlap each other;
A first joining step for joining the first end of each side panel in the waistline direction to each side edge of the front part or each side edge of the back part;
A second folding step of folding the diaper main body along a virtual second line extending in the waistline direction so that the front portion and the back portion overlap each other;
Second side separated from the first end of each side panel in the waistline direction on each side edge of the back portion or front side where the side panel is not joined in the first joining step. The manufacturing method of the underpants type diaper provided with the 2nd joining process of joining an edge part.

According to the method of the present invention, the side panel folded in advance is joined to the front portion and the back portion. Therefore, unlike the case of joining two side panels joined to the front part and the back part, there is no joined part where the side panels are joined. Therefore, the joint portion does not protrude outward when worn. As a result, the appearance is good.
Further, there is no joint between the side panels. Therefore, even when the wearer lies down, the joint portion does not hit the wearer's waistside portion. Therefore, a feeling of wearing is good.

Fig.1 (a)-FIG.1 (e) are the schematic front views which show the manufacturing method of the underpants type diaper concerning Example 1 of this invention, FIG.1 (f) is a schematic sectional drawing which shows the said underpants type diaper. 2 (a) to 2 (e) are schematic front views showing a method for producing a pant diaper according to Example 2 of the present invention, and FIG. 2 (f) is a schematic cross-sectional view showing the pant diaper. FIGS. 3A to 3F are schematic front views showing a method for producing a pant diaper according to Example 3 of the present invention, and FIG. 3G is a schematic cross-sectional view showing the pant diaper. 4 (a) to 4 (f) are schematic front views showing a method for manufacturing a pant-type diaper according to Example 4 of the present invention. FIG. 5 is a schematic perspective view showing an example of a method for forming a continuous laminated body serving as a side panel. 6 (a) to 6 (c) each show a pant-type diaper according to Example 1, and FIG. 6 (a) and FIG. 6 (b) are a schematic front view and a cross section of the diaper, respectively. FIG. 6 and FIG. 6C are enlarged plan views showing a part of the side panel. FIGS. 7A to 7B each show a side panel of Example 1, and FIGS. 7A and 7B are a perspective view and an exploded perspective view of the side panel, respectively. . FIG. 8 is a schematic perspective view showing another example of a method for forming a laminated body serving as a side panel. FIG. 9 is a schematic perspective view showing still another example of a method for forming a continuous laminated body serving as a side panel. FIG. 10 is a schematic perspective view showing a method of forming a first continuous web that becomes a diaper body. Fig.11 (a)-FIG.11 (d) are schematic front views which show the manufacturing method of the underpants type diaper concerning Example 5 of this invention. FIG. 12A and FIG. 12B are a schematic front view and a sectional view of a pant diaper according to Example 5, respectively. FIG. 13A is a schematic perspective view showing another example of a method for forming a first continuous web that becomes a diaper body, and FIG. 13B is a cross-sectional view of an embossed side panel.

Preferably, each side panel is formed with a breaking portion for breaking the side panel,
The breaking portion extends continuously or continuously from the upper end of the side panel to the lower end of the side panel.
In this case, at the time of disposal after using the diaper, the caregiver can easily remove the diaper from the wearer by breaking the side panel at the broken portion.

Preferably, the elastic member is cut or hardened at the broken portion in order to facilitate breakage of the side panel.
In this case, the thread-like elastic member is cut or cured, and therefore, the elastic member is easily broken.

More preferably, the broken portion further includes a notch in which the side panel is cut or cut out at at least one of an upper end and a lower end of the side panel.
In this case, since stress tends to concentrate on the notch, the fracture at the fracture portion is further facilitated.

Preferably, each side panel is folded in two along a virtual first line extending in a vertical direction perpendicular to the waistline direction so that the first part and the second part overlap each other.
The rupture portion is formed by deforming or altering the material of each side panel, and the first portion and the second portion of each side panel are temporarily connected to each other by engagement or thermal welding at the rupture portion. It has been stopped.
In this case, the state of the folded side panel is stabilized by temporary fixing, and the conveyance and joining of the side panel are facilitated.
Moreover, the said temporary fix | stop can be performed by the process of forming a fracture | rupture part. Therefore, a temporary fixing process is not required separately.
In the present invention, the term “temporary fixing” refers to fixing members that can be easily separated without damaging each member when releasing the fixing. Say.

In this embodiment, it is more preferable that the breaking portion is provided at a position closer to one side edge portion of the side edge portions than the first line.
In this case, the state of the folded side panel is easily stabilized.

Preferably, the liquid absorption between the liquid-impermeable resin sheet (sheet) disposed on the non-skin surface side of the diaper body and the liquid-permeable nonwoven sheet disposed on the skin surface side of the diaper body. The core of the diaper is formed by sandwiching a sex core,
Each side panel is joined to the diaper body at each side edge,
The diaper main body has a portion where the resin sheet is not covered with the nonwoven fabric sheet in each side edge portion,
The said side panel is joined to the skin surface of the said resin sheet in each said site | part.
In this case, the said side panel is joined to the skin surface of the resin sheet which is not covered with the nonwoven fabric sheet. The resin sheet has a smooth surface compared to the nonwoven fabric sheet. Therefore, the side panel and the diaper body can be easily joined and a large joining force can be obtained.
In the present invention, the “skin surface” refers to an inner surface that directly or indirectly contacts the wearer's skin when the diaper is worn.
In the present invention, the “non-skin surface” refers to an outer surface that is not in contact with the wearer's skin opposite to the skin surface.

The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.
In addition, in part of the katakana notation in this specification, English words are also written in parentheses in order to clarify the meaning.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 6 shows a pant-type diaper 1 according to the first embodiment.
As shown in FIGS. 6A and 6B, the pant-type diaper 1 of the first embodiment includes a diaper main body 2 and a pair of side panels 3. The diaper main body 2 has a front part 20, a back part 21 and a crotch part 22. The front part 20 covers the wearer's ventral side. The back part 21 covers a wearer's back side. The crotch part 22 connects between the front part 20 and the back part 21 and covers the crotch of the wearer. The pair of side panels 3 are joined to both side edges 20a and 21a of the diaper main body 2 so that the front part 20 and the back part 21 are connected in the waistline direction Y.

As shown in FIG.6 (b), the said diaper main body 2 is provided with the absorptive core 5 etc. which cover a wearer's crotch. The core 5 is disposed between a liquid-impermeable resin sheet 25 disposed on the non-skin surface side of the diaper main body 2 and a liquid-permeable nonwoven fabric sheet 2w disposed on the skin surface side of the diaper main body 2. It is sandwiched.
The diaper main body 2 may be provided with a leg periphery 23 cut along the wearer's leg. Moreover, the said leg periphery part 23 may be provided with the elastic member 24 which consists of a rubber thread (rubber) etc. so that a wearer's leg periphery may be followed.

Furthermore, the front part 20 and the back part 21 of the diaper main body 2 may be provided with elastic members for fitting the diaper 1 to the wearer. As this elastic member, for example, a material including a plurality of thread rubbers, flat rubbers, films, or thermoplastic resins can be employed.

FIG. 7A shows the side panel 3 in an unfolded state.
In FIG. 7A, the side panel 3 is continuously continuous in the waistline direction Y. The side panel 3 includes a plurality of thread-like elastic members F extending in the waistline direction Y and a pair of webs W, W sandwiching the elastic member F. The pair of webs W, W are bonded to each other.
In the case of the present embodiment, when the side panel 3 is manufactured, the plurality of elastic members F are sandwiched at both ends by a tape laminate T1 made of a pair of upper and lower tape materials. It is fixed to the material.

As shown in FIG. 7A, each side panel 3 is formed with a break portion 7. The breaking portion 7 extends so as to cross the pair of webs W, W of the side panel 3 in the vertical direction, and breaks the side panel 3. That is, the fracture portion 7 in FIG. 6A is intermittently formed from the upper end 33 to the lower end 34 of the side panel 3.
7 may be slit-shaped cuts penetrating the both webs W, W, or may be one obtained by curing both webs W, W with heat. In order to make the side panel 3 more easily ruptured, in the present embodiment, it is preferable that all the elastic members F of the side panels 3 are cut or cured at the rupture portion 7.
When the webs W and W and the elastic member F are cured by heat, the fracture portion 7 in FIG. 6A may be continuously provided from the upper end 33 to the lower end 34 of the side panel 3.

  As clearly shown in FIG. 5C, the fracture portion 7 may further include a notch 70 in which the side panel 3 is cut out at at least one of the upper end 33 or the lower end 34 of the side panel 3.

Below, the manufacturing method of the said underpants type diaper 1 is demonstrated.
Diaper body 2 transporting process:
As shown to Fig.1 (a), the diaper main body 2 is conveyed in the state of the 1st continuous web W1 with which the several diaper main body 2 was mutually connected (it is not cut | disconnected). The first continuous web W1 is made of, for example, a continuous laminated sheet, and is conveyed in a longitudinal direction (conveying direction) X substantially perpendicular to the waistline direction Y.

First folding step:
On the other hand, the side panel 3 is conveyed in the state of the laminated web W2 in which the plurality of side panels 3 are connected to each other. A pair of the laminated webs W2 is conveyed.
The side panel 3 is folded along a virtual first line L1 extending in the transport direction X of the side panel 3 so that the first part 37 and the second part 38 of the side panel 3 overlap each other. That is, the side panel 3 is folded so that the skin surfaces 3a of the side panel 3 face each other. The side panels 3 are folded so that the first and second end portions 31 and 32 are close to the diaper body 2 side.

Temporary stop process:
In order to maintain the folded state of the side panel 3 folded in the first folding step, the first part 37 and the second part 38 of the side panel 3 are formed by, for example, heat sealing. Temporarily fixed to each other at the temporary fixing portion 39. In addition, temporary fixing is made in the shape of a dot and can be easily separated when the diaper is worn.

  Thereafter, as shown in FIG. 1B, the laminated web W <b> 2 is cut off at the leading end in the transport direction X and cut into individual side panels 3.

First joining step:
On the other hand, an adhesive is applied to a portion indicated by a halftone dot on both side edge portions 21a on the skin surface 2a side of the back portion 21 of the diaper main body 2. As shown in FIG.1 (c), the 1st edge part (one edge part) 31 of the said each pair of side panel 3 is each to the said both side edge part 21a of the trunk periphery direction Y of the back part 21 of the diaper main body 2 respectively. Be joined. Prior to the joining, the first end portion 31 is disposed on the diaper main body 2 such that both side panels 3 protrude from the diaper main body 2 in the waistline direction Y.
Thereafter, the first continuous web W1 is cut into individual diaper bodies 2 along a virtual cut line CL that is substantially parallel to the waistline direction Y.

Second folding step:
An imaginary first extending along the waistline direction Y shown in FIG. 1 (d) is applied to the site indicated by the halftone dots on both side edges 20 a of the skin surface 2 a on the front part 20 side of the diaper body 2. The diaper main body 2 is folded twice along the two lines L2. The second line L2 is set at a position where the front portion 20 and the back portion 21 overlap each other (be line symmetric).

Second joining step:
When the diaper body 2 is folded, as shown in FIG. 1 (e), the second end portions (the other end portions) 32 of the pair of side panels 3 are arranged in the waist direction of the front portion 20 of the diaper body 2. Joined to both side edges 20a of Y.
Therefore, the second end 32 of the side panel 3 is joined to the front part 20 to which the side panel 3 is not joined in the first joining step.

As shown in FIGS. 1E and 1F, the pant-type diaper manufactured by the manufacturing method described above is in a state in which the side panel 3 projects from the diaper body 2 in the waistline direction Y.

In the above description, the diaper body 2 is transported so that the front part 20 is on the downstream side, but the diaper body 2 may be transported so that the back part 21 is on the downstream side.
Moreover, as said adhesive agent, the adhesive agent which consists of hot-melt resin is employable, for example.
Furthermore, you may apply | coat an adhesive agent simultaneously to the both-sides edge part 20a by the side of the front part 20, and the both-sides edge part 21a by the side of the back part 21. FIG.
Moreover, as a method of joining the side panel 3 to the diaper main body 2, a method such as heat sealing or sonic may be used in addition to the method using the adhesive.

Next, an example of a method for manufacturing the laminated web W2 that will be the side panel 3 used for manufacturing the diaper 1 will be described.

  In FIG. 5, the thread-like elastic member F is spirally wound around a pair of conveyors 90 and 90. In this state, the conveyors 90 and 90 are rotated, and the spiral elastic member F is transported in the transport direction X. On the other hand, the elastic member F is sandwiched between a pair of upper and lower tapes T, T. The tapes T and T are bonded to each other, and the elastic member F is placed between the tape laminates T1 and T1.

When the pair of cutters 91 and 91 cut the elastic member F outside the tape laminated body T1 in this erected state, a ladder-like elastic laminated body FT is formed. Thereafter, the elastic laminated body FT is sandwiched between the continuous webs W, W made of a pair of nonwoven fabrics, thereby forming the laminated web W2 that becomes the side panel 3.

Thereafter, prior to the first folding step, breakage portions 7 for breaking the side panel 3 are intermittently formed in the transport direction X. When forming the fracture portion 7, the elastic member F is cut or cured at the fracture portion 7. At the same time, the notch 70 of FIG. 5 is formed in the laminated web in at least one of the portions that become the upper end 33 and the lower end 34 of the side panel 3 of FIG.

The method of forming the laminated web W2 is described in detail in JP63-243309A (Japanese Patent Laid-Open No. 63-243309), and all of the description is incorporated here.

Next, another method for manufacturing the side panel will be described.

In FIG. 8, a thread-like elastic member F is sandwiched between a pair of upper and lower continuous webs W, W, and a laminated web W2 is generated. The laminated web W2 is divided into two slits, and after the leading end of each divided laminated web W2 is cut off, the laminated web W2 is turned by 90 ° to generate the side panel 3. Thereafter, the side panels 3 and 3 are folded twice.
In this case as well, the break portion 7 may be formed in the side panel 3.

As another method for manufacturing the laminated web W2, for example, a method disclosed in WO2008 / 126709A1 may be employed.

Next, another embodiment will be described. In the following examples, structures and methods different from those in Example 1 will be described.
FIG. 2 shows a second embodiment.
In the pants-type diaper of the second embodiment, the entire side panel 3 is sandwiched between the front part 20 and the back part 21 of the diaper main body 2 as shown in FIGS. 2 (e) and 2 (f). It is formed to be in a state. The first and second end portions 31 and 32 of the side panel 3 are joined to the back portion 21 of the diaper main body 2 and the end portions 21a and 20a on the skin surface 2a side of the front portion 20, respectively.

FIG. 3 shows a third embodiment.
As shown in FIGS. 3 (f) and 3 (g), the pant-type diaper according to the third embodiment is in a state where the side panel 3 is sandwiched between the front part 20 and the back part 21 of the diaper main body 2. It is formed to become. The first and second end portions 31, 32 of the side panel 3 are bent and joined to the back portion 21 of the diaper main body 2 and the end portions 21b, 20b on the outer surface side (non-skin surface side) of the front portion 20, respectively. Has been.

FIGS. 4A to 4F show Example 4 of the method for manufacturing the pant-type diaper 1.
As in this embodiment, the side panels 3 and 3 may be joined to the diaper main body 2 in a state where a pair of side panels 3 and 3 adjacent in the transport direction X are connected.

The manufacturing method of the diaper shown in FIGS. 2 to 4 is disclosed in US2011 / 0100536A1 (WO2010 / 032396A1), and the entire description thereof is incorporated here.

9 to 12 show a fifth embodiment.

As shown in FIGS. 12A and 12B, the rupture portion 7 of the diaper 1 is disposed at a position closer to the side edge portions 20a and 21a than the first line (folding line) L1. When the break portion 7 is close to the side edge portion 21a, the rigidity of the portion between the break portion 7 and the diaper main body 2 is larger than the rigidity of the portion between the break portion 7 and the first line L1. Let's go. For this reason, a difference in the magnitude of rigidity occurs at the break portion 7, and breakage at the break portion 7 may be facilitated by stress concentration.
In addition, the fracture | rupture part 7 may be provided in parallel with respect to the 1st line L1 and the side edge parts 20a and 21a.

In the case of the present embodiment, the breaking portion 7 is formed by heating and altering the material of each side panel 3, so that the breaking portion 7 has the side panel 3 of FIG. The first part 37 and the second part 38 are temporarily fixed to each other by heat welding. In FIG. 12B, the temporary fixing portion 100 is indicated by xx.
Note that the first portion 37 and the second portion 38 are used apart from each other by peeling off the temporarily fixed portion.

  As shown in FIG. 10, a liquid-impermeable resin sheet (back sheet) 2s disposed on the non-skin surface, a liquid-permeable non-woven sheet (top sheet) 2w disposed on the skin surface, The diaper body 2 is formed by sandwiching a liquid-absorbing core 5 between the two. Each said side panel 3 of FIG. 12 is joined to the said diaper main body 2 in each said side edge part 20a, 21a. In each of the side edge portions 20a and 21a, the nonwoven fabric sheet 2w is cut out as shown in FIG. As shown in FIG. 11B, the side panel 3 is joined to the skin surfaces of the side edges 20a and 21a of the resin sheet 2s.

Next, another example of a method of forming the laminated web (elastic laminated body) W2 that becomes the side panel 3 will be described.
In addition, about the method of this example, the part different from the example of FIG. 5 is mainly demonstrated.

  In FIG. 9, a lead-out portion 92a through which a thread-like elastic member F is led out is provided at the tip of a crank-like arm (arm) 92. As the arm 92 rotates, the elastic member F is spirally wound around the pair of conveyors 90 spaced apart from each other in the width direction. Due to the rotation of the pair of conveyors 90, the stretched elastic member F is transported downstream in the transport direction X of the conveyor 90.

A pair of continuous webs W, W having a width D2 smaller than a width D1 between the pair of conveyors 90, 90 are introduced between the pair of conveyors 90, 90. The elastic member F being conveyed is sandwiched between the pair of continuous webs W and W, and the pair of continuous webs W2 and W2 and the elastic member F are bonded to form the laminated web W2. Thereafter, the elastic member F is cut by the cutter 91 between the conveyors 90, 90 and the laminated web W2. After this cutting, the laminated web W2 may be slit into two as indicated by the cut line L3.
When the pair of webs W, W are sandwiched by nip rolls above or below the pair of conveyors 90, 90, the width D2 of the continuous web W is larger than the width D1 between the conveyors 90, 90. May be.
Further, the elastic member F may be cut at a position protruding from the continuous webs W, W. For example, the elastic member F may be cut outside the conveyor 90.

  As shown in FIG. 11A, in the case of the present embodiment, the first part of the side panel 3 is maintained in order to maintain the folded state of the side panel 3 folded in the first folding step. A temporary fixing step of temporarily fixing 37 and the second portion 38 to each other. The break portion 7 is formed by heating and changing the material of each side panel 3, so that the first portion 37 and the second portion 38 of each side panel 3 in the break portion 7 are They are temporarily fixed to each other by heat welding, whereby the temporary fixing step is executed.

Next, features of the method for manufacturing the diaper 1 of this embodiment will be described.
As shown in FIG. 10, in the case of a present Example, the process which notches the said nonwoven fabric sheet 2w in each said side edge part 20a, 21a, and exposes the skin surface of the said side edge part 20a, 21a of the resin sheet 2s further. Prepare. The side panel 3 is joined to the exposed side edges 20a and 21a of FIG. 11B, and the first and second joining steps are performed.

Next, another manufacturing method of the first continuous web W1 serving as the diaper body 2 will be described with reference to FIG.
In FIG. 13, the width Ww of the nonwoven fabric sheet 2w is smaller than the width Ww of the resin sheet 2s. With the side edges 20a and 21a of the resin sheet 2s exposed, the resin sheet 2s, the absorbent core 5 and the nonwoven fabric sheet 2w are laminated to generate the first continuous web W1.

In the case of the present embodiment, the side panel 3 in FIG. 11B is formed on the skin surface of the side edge portions 20a and 21a where the resin sheet 2s is not covered with the nonwoven fabric sheet 2w (non-covering portion). The first and second end portions 31 and 32 are joined.
In this case, the process of notching the nonwoven fabric sheet 2w of FIG. 10 is not necessary.

In the embodiment of FIG. 13, at least a part of the uncovered portion of the resin sheet 2s to which the first and second end portions 31 and 32 of the side panel 3 are not joined has a leg hole. When forming, it may be die-cut.

When forming the fracture portion 7 of FIG. 11, the material of the side panel 3 is altered or not altered, and the material of the side panel 3 is deformed, so that The first portion 37 and the second portion 38 of the side panel 3 may be temporarily fixed to each other by at least one of engagement and thermal welding.

For example, when forming the fracture portion 7 of FIG. 11, the materials W2 and W2 of the side panel 3 are embossed, preferably in the form of needles or columns, with the first portion 37 and the second portion 38 of FIG. The first part 37 and the second part 38 are loosely engaged with each other so that the first part 37 and the second part 38 are temporarily fixed to each other. Also good. In the embossing, the material of the side panel may be altered by heating in addition to the deformation by the embossing.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification.
For example, an elastic hot melt resin may be employed without using a rubber thread as the thread-like elastic member.
The notches need not be V-shaped and may be line-shaped cuts. Furthermore, the notch is not necessarily provided in the side panel.
Accordingly, such changes and modifications are to be construed as within the scope of the present invention as defined by the claims.

  The present invention can be employed in a method for producing a pant-type diaper.

1: Pants type diaper 2: Diaper body 2s: Resin sheet 2w: Non-woven fabric sheet 20: Front part 21: Back part 22: Crotch part 20a: Side edge part 21a: Side edge part 3: Side panel 31: First end part 32 : Second end 33: upper end 34: lower end 37: first part 38: second part 5: core 7: fracture part 70: notch D1, D2: width L1: first line L2: second line F: elastic member T: Tape W1: First continuous web W2: Laminated web

Claims (15)

A front part covering the abdomen side of the wearer, a back part covering the back side of the wearer, and a diaper body having a crotch part between the front part and the back part;
One side panel that connects one side edge of the front part and one side edge of the back part in the waistline direction;
Another side edge portion that is separated from the one side edge portion of the front portion in the waistline direction and another side edge portion that is separated from the one side edge portion of the back portion in the waistline direction are the waistline direction. A pants-type diaper provided with another side panel, wherein each of the side panels is
It includes a thread-like elastic member that is continuous in the waistline direction and extends in the waistline direction, and a pair of webs that sandwich the elastic member. The diaper according to claim 1, wherein each side panel is formed with a break portion for breaking the side panel,
The breaking portion extends continuously or continuously from the upper end of the side panel to the lower end of the side panel.   3. The diaper according to claim 2, wherein the elastic member is cut or hardened at the rupture portion so that the side panel is easily broken.   4. The diaper according to claim 3, wherein the breaking portion further includes a notch in which the side panel is cut or cut out at an upper end and / or a lower end of the side panel. 3. The diaper according to claim 2, wherein each side panel is folded in two along a virtual first line extending in a vertical direction orthogonal to the waistline direction so that the first part and the second part overlap each other. And
The rupture portion is formed by deforming or altering the material of each side panel, and the first portion and the second portion of each side panel are temporarily connected to each other by engagement or thermal welding at the rupture portion. It has been stopped.   The diaper according to claim 5, wherein the breaking portion is provided at a position closer to one side edge portion of the side edge portions than the first line. 2. The diaper according to claim 1, wherein a liquid impermeable resin sheet disposed on the non-skin surface side of the diaper main body and a liquid permeable nonwoven fabric sheet disposed on the skin surface side of the diaper main body are absorbed. The diaper body is formed by sandwiching a liquid core,
Each side panel is joined to the diaper body at each side edge,
The diaper main body has a portion where the resin sheet is not covered with the nonwoven fabric sheet in each side edge portion,
The said side panel is joined to the skin surface of the said resin sheet in each said site | part. A method for producing a diaper according to claim 1,
Transporting the diaper body in a longitudinal direction orthogonal to the waistline direction;
A first folding step of folding each side panel along a virtual first line extending in the longitudinal direction so that the first part and the second part of each side panel overlap each other;
A first joining step for joining the first end of each side panel in the waistline direction to each side edge of the front part or each side edge of the back part;
A second folding step of folding the diaper main body along a virtual second line extending in the waistline direction so that the front portion and the back portion overlap each other;
Second side separated from the first end of each side panel in the waistline direction on each side edge of the back portion or front side where the side panel is not joined in the first joining step. The manufacturing method of the underpants type diaper provided with the 2nd joining process of joining an edge part.   9. The method according to claim 8, wherein, prior to the first folding step, a rupture portion that extends continuously or continuously in the longitudinal direction of the side panel to break the side panel is formed in the pair of webs. The process further includes.   The method according to claim 9, wherein the elastic member is cut or cured at the breaking portion when the breaking portion is formed in order to easily break the side panel.   11. The method of claim 10, further comprising the step of forming the notch by including a notch in which the side panel is cut or notched at an upper end and / or a lower end of the side panel. 9. The method according to claim 8, wherein the first part and the second part of the side panel are temporarily fixed to each other in order to maintain the folded state of the side panel folded in the first folding step. Further provided with a temporary fixing step,
Since the material of each side panel is deformed or altered in the broken portion, the first portion and the second portion of the side panel are temporarily fixed to each other by engagement or thermal welding in the broken portion. Thereby, the temporary fixing step is executed. 9. The method according to claim 8, wherein a liquid impermeable resin sheet disposed on the non-skin surface side of the diaper body and a liquid permeable nonwoven sheet disposed on the skin surface side of the diaper body are absorbed. The diaper body is formed by sandwiching a liquid core,
Each side panel is joined to the diaper body at each side edge,
The diaper main body has a portion where the resin sheet is not covered with the nonwoven fabric sheet in each side edge portion,
In the state where the skin surface of the part of the resin sheet is exposed, the resin sheet, the core, and the nonwoven fabric sheet are laminated to produce the diaper body,
The side panel is joined to the exposed side edge, and the first and / or second joining steps are performed. A method for producing an elastic laminate that expands and contracts in the width direction by sandwiching a thread-like elastic member extending in the width direction of the continuous web between a pair of continuous webs,
A step of spirally winding the elastic member in a stretched state on a pair of conveyors spaced apart from each other in the width direction;
A step of transporting the elastic member in the stretched state by the rotation of the pair of conveyors toward the downstream of the transport direction of the conveyor;
Introducing the pair of continuous webs between the pair of conveyors;
And sandwiching the elastic member being conveyed between the pair of continuous webs and bonding the elastic member and the pair of continuous webs together to form the elastic laminate. 15. The method according to claim 14, further comprising a step of cutting the elastic member at a position protruding from the continuous web.

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