JP5237323B2 - Manufacturing method for articles wearing pants - Google Patents

Description

  The present invention is suitable for continuously forming a pants-type wearing article in which an absorbent body is installed between leg holes 9, such as a pants-type paper diaper for infants, a training pant, an adult diaper, an incontinence pant, and a female physiologically treated pant. The present invention relates to a manufacturing method for a pants-type wearing article.

  Conventionally, as a manufacturing method for continuously forming a pants-type wearing article, as shown in FIG. 10 (a), an elastic member 31 is placed on an outer sheet 30 composed of a series of web sheets, and a series of web sheets is formed thereon. After the inner sheet 32 is overlaid, the sheets 30, 32 and the elastic member 31 are bonded together to form an elastic sheet continuous body 34, and the elastic sheet continuous body 34 is die-cut as shown in FIG. Leg holes 35 are formed, the absorber 36 is fixed between the leg holes 35 as shown in FIG. 11A, and the elastic sheet continuous body 34 is folded in the sheet width direction as shown in FIG. 11B. The pants continuum 37 is formed by stacking and welding with a width in the sheet length direction at the middle 38 of each leg hole 35, and the middle of the welded portion of the pants continuum 37 (1 in the figure). There is a method of cutting a chain line) (see Patent Document 1).

JP-A-11-107007

  However, in the manufacturing method as described above, since the entire opening region of the leg hole 35 is cut out from the elastic sheet continuous body 34, there is a problem that a lot of sheet material is wasted.

  Then, the subject of this invention is providing the manufacturing method of the underpants type wearing article which can save the usage-amount of a sheet | seat material.

  As means for solving the above-mentioned problems, the present invention is a method of manufacturing a pants-type wearing article 13 in which an absorbent body 8 is installed between leg holes 9, and the first outer sheet 1 and the first inner sheet 3 are bonded together. The first elastic sheet 6 is formed by attaching the elastic member 5 that is stretched in the outer sheet length direction A, the second outer sheet 2 and the second inner sheet 4 are bonded together, and the stretched state is in the outer sheet length direction A. The second elastic sheet 7 is formed by attaching the elastic member 5 and the first elastic sheet 6 and the second elastic sheet 7 are extended in the outer sheet length direction A and in the outer sheet width direction S. In the separated state, the absorber 8 is fixed between the elastic sheets 6 and 7, and the first elastic sheet 6 and the second elastic sheet 7 are extended in the outer sheet length direction A. In a state of being spaced outer seat width direction S causes the was to have a step c for forming the leg hole 9 between the two elastic sheets 6,7.

  According to this configuration, the amount of sheet material used for the outer sheet and the inner sheet is reduced by the gap between the outer sheets 1 and 2 and the inner sheets 3 and 4 separated in the outer sheet width direction S. Further, since the leg hole 9 is formed between the elastic sheets 6 and 7, the cut-out portions of the outer sheets 1 and 2 and the inner sheets 3 and 4, that is, the useless portions of the outer sheet and the inner sheet are reduced. .

  The first elastic sheet 6 and the second elastic sheet 7 are bonded to each other, the outer sheet 14 and the inner sheet 15 are bonded together, and the elastic members 5 and 5 that are stretched in the outer sheet length direction A are attached to the elastic sheet 16. It is also possible to form the elastic sheet 16 by cutting the elastic sheet 16 in the sheet length direction A.

  On the other hand, in the present invention, a single outer sheet can be used. Specifically, the manufacturing method of the pants-type wearing article 13 in which the absorbent body 8 is installed between the leg holes 9, the first inner sheet 3 and the second inner sheet 4 are separated from the outer sheet 17 in the outer sheet width direction S. The elastic sheet 18 is stretched in the outer sheet length direction A to the step of forming the elastic sheet 18 by attaching the stretched elastic members 5 and 5 in the outer sheet length direction A. A leg hole 9 is formed between the inner sheets 3 and 4 of the elastic sheet 18 in a stretched state in the outer sheet length direction A, and the process of fixing the absorbent body 8 between the inner sheets 3 and 4 It was made to have process h.

  According to this configuration, the amount of sheet material used for the inner sheet is reduced by the gap between the inner sheets 3 and 4 spaced apart in the outer sheet width direction S. Moreover, since the leg hole 9 is formed between the inner sheets 3 and 4, the cut-out portions of the inner sheets 3 and 4, that is, the portions where the inner sheets are wasted are reduced.

  In the present invention, when the elastic sheet is formed, the step of attaching the outer sheet and the inner sheet and the step of attaching the elastic member 5 can be performed simultaneously or separately. . The elastic member 5 is attached so as to be sandwiched between the outer sheet and the inner sheet, or is attached to only one of the sheets. Here, the elastic member 5 does not need to be attached all at once, and may be attached in several steps.

  By the way, in the elastic sheet 18 using a single outer sheet 17, both the inner sheets 3 and 4 are supported by the outer sheet 17 even after the leg hole 9 is formed, so that it is difficult for wrinkles and wrinkles to occur. . Therefore, when a single outer sheet 17 is used, the absorber 8 can be firmly fixed even if the step of forming the leg holes 9 is performed before the step of fixing the absorber 8. Can do.

  On the other hand, when the first elastic sheet 6 and the second elastic sheet 7 are used, the following problem occurs. That is, when the leg holes 9 are formed by partially cutting the opposing edges 6a and 7a of the first elastic sheet 6 and the second elastic sheet 7, the part between the leg holes 9 and 9 of the opposing edges 6a and 7a is The elastic members 5 and 5 cause warping and wrinkles due to the elastic contraction force. However, the part between the leg holes 9 and 9 on the opposite edges 6a and 7a is a part where the absorber 8 is overlapped, and the first elastic sheet and the first part are left in a state in which the part is wrinkled or wrinkled. 2 It is difficult to fix the absorber 8 to the elastic sheet, and a high fixing strength cannot be obtained.

  Therefore, in the present invention, it is preferable to perform the step C of forming the leg hole 9 after performing the step B of fixing the absorber 8. In this case, since the leg hole 9 is formed after the absorber 8 is already fixed, it is not affected by twisting or wrinkling, and the absorber 8 is easily fixed.

  Further, in the present invention, when the elastic member 5 includes the leg gather forming elastic member 5b that forms the leg gathers 22 at the edge of the leg hole 9, the adhesion to the buttocks and the crotch portion is increased, and the clearance around the legs is increased. While disappearing, the fitting property of the absorbent body 8 is improved, and a pants-type wearing article 13 that hardly leaks can be obtained.

  As described above, according to the present invention, at least the amount of the sheet material used for the inner sheet is reduced, and the portion that is wasted is reduced. It is done.

(A) Enforcement state figure of process a of the manufacturing method of the underpants type wearing article concerning a 1st embodiment of the present invention, (b) Enforcement state figure of process b of a 1st embodiment. (a) Enforcement state figure of process c of 1st Embodiment, (b) Enforcement state figure of process D of 1st Embodiment. (A) Enforcement state figure of process e of 1st Embodiment, (b) The completion state figure of the underpants type wearing article which concerns on 1st Embodiment. (A) Enforcement state figure of process a of the manufacturing method of the underpants type wearing article concerning a 2nd embodiment of the present invention, and (b) Cut-out enforcement state figure of an elastic sheet. (A) Enforcement state figure to the process of the manufacturing method of the underpants type wearing article concerning a 3rd embodiment of the present invention, (b) Enforcement state figure of process h of a 3rd embodiment of the present invention. (A) The top view which shows the aspect of the elastic sheet of 1st Embodiment, (b) Sheet | seat width direction sectional drawing of (a). (A) The top view which shows another aspect of the elastic sheet of 1st Embodiment, (b) Sheet | seat width direction sectional drawing of (a). It is a disassembled perspective view of the absorber of a 1st embodiment. In 1st Embodiment, it is an enforcement state figure which shows a mode that the elastic member for leg gather formation provided in the elastic sheet is removed. (A) The enforcement state figure of the pasting process of the manufacturing method of the conventional pants type wearing article, (b) The enforcement state figure of the formation process of the leg hole following (a). (A) The enforcement state figure of the adhering process of the absorber following FIG.10 (b), (b) The enforcement state figure of the formation process of the underpants continuous body following (a).

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 3 (b), the manufacturing method of the pant-type wearing article according to the first embodiment of the present invention includes a waist gather 21, a leg gather 22, and a fit gather 23, and an absorbent body between the leg holes 9. 8 is a method of manufacturing a pants-type paper diaper 13 in which a first elastic sheet 6 and a second elastic sheet 7 are formed, as shown in FIGS. 1 (a) to 3 (a), absorption. It includes a process step B in which the body 8 is fixed, a process step C in which the leg hole 9 is formed, a process step D in which the pant continuous body 11 is formed, and a process step E in which the pant-type wearing article 13 is formed.

  1A, first, the first outer sheet 1 and the second outer sheet 2 made of continuous web sheets are supplied in a state of being separated in the outer sheet width direction S. Here, the first outer sheet 1 and the second outer sheet 2 can be individually prepared, and the series of outer sheets can be prepared in the outer sheet length direction at the approximate center (or the center) of the outer sheet width direction S. It can be formed by cutting into A. In the following, the illustration of the outer sheet length direction A and the outer sheet width direction S in the figure is omitted.

  Next, the elastic member 5 stretched in the outer sheet length direction A is attached to each of the first outer sheet 1 and the second outer sheet.

  And in the state which the 1st inner sheet 3 and the 2nd inner sheet 4 which consist of a continuous web sheet space apart in the outer sheet width direction S, the 1st outer sheet 1, the 1st inner sheet 3, and the 2nd outer sheet 2 The second inner sheet 4 is supplied so as to be combined. Here, the first inner sheet 3 and the second inner sheet 4 can be individually prepared, and a series of inner sheets can be prepared in the outer sheet length direction A at the approximate center (or the center) of the sheet width direction S. It can be formed by cutting into pieces.

  By the way, as shown to FIG. 6 (a) (b), the elastic member 5 contains the elastic member 5a for waist gather formation, the elastic member 5b for leg gather formation, and the elastic member 5c for fit gather formation. However, the leg gather forming elastic member 5b and the fit gather forming elastic member 5c can be omitted arbitrarily. For example, like the first outer sheet 1, the elastic member 5 is replaced with the waist gather forming elastic member. 5a and the fit gather forming elastic member 5c.

  The waist gather forming elastic member 5a and the fit gather forming elastic member 5c can be composed of a plurality of elastic yarns, and the leg gather forming elastic member 5b includes, for example, a leg hole 9 as shown in FIG. It can be comprised from the wave-like elastic yarn bent along the formation part, or a linear elastic yarn as shown to Fig.7 (a).

  As shown in FIGS. 6A to 7B, the elastic member 5 is attached so as to be sandwiched between the first outer sheet 1 and the first inner sheet 3. Especially, the elastic member 5a for waist gather formation can also be attached so that it may be pinched | interposed in the outer edge part 1a, 2a of the 1st outer sheet | seat 1 and the 2nd outer sheet | seat 2 at the folding part.

  As described above, the elastic member 5 is sandwiched between the first outer sheet 1 and the first inner sheet 3 and between the second outer sheet 2 and the second inner sheet 4. The inner sheets 3 and 4 are bonded together.

  For the bonding, for example, a hot melt adhesive can be used. The hot melt adhesive may be applied to each sheet 1, 2, 3, 4 or both the sheets 1, 2, 3, 4 and the elastic member 5. In particular, the hot melt adhesive is applied only to the elastic member 5 continuously or intermittently, and the first outer sheet 1, the first inner sheet 3, the elastic member 5, the second outer sheet 2, the second inner sheet 4 and the elastic member. When the member 5 is bonded, a pants type wearing article 13 having a soft texture can be obtained. In addition, it is not necessary to perform bonding of each outer sheet | seat and each inner sheet | seat, and attachment of the elastic member 5 simultaneously, and it can also carry out separately.

  The first elastic sheet 6 and the second elastic sheet 7 are formed by the above process a.

  The formed first elastic sheet 6 and second elastic sheet 7 are continuously supplied to the process b shown in FIG. 1B while being stretched in the outer sheet length direction A. In step B, the absorbent body 8 is bridged between the first elastic sheet 6 and the second elastic sheet 7 in a state where the first elastic sheet 6 and the second elastic sheet 7 are separated in the outer sheet width direction S, The overlapping portions at both ends are fixed to the first elastic inner sheet 3 and the second inner sheet 4, respectively.

  For example, as shown in FIG. 8, the absorbent body 8 has a pair of web flaps 8b, 8b bonded with a three-dimensional gather forming elastic member 8a stretched along the upper edge, and a liquid in which these are bonded. A top sheet 8c made of a permeable web, a fluff 8d in which a water absorbent polymer is mixed with a pulp defibrated body, a liquid-impermeable synthetic resin film 8e, and a crotch gather forming elastic member 8f are bonded in pairs on both sides. What laminated | stacked the cover sheet 8g made from a web can be used. The three-dimensional gather forming elastic member 8a and the crotch gather forming elastic member 8f can be arbitrarily omitted.

  As shown in FIG.1 (b), after adhering the absorber 8 to the 1st elastic sheet 6 and the 2nd elastic sheet 7, the outer edge parts 1a and 2a of the 1st outer sheet 1 and the 2nd outer sheet 2 are respectively It is fixed in a folded state inside. As shown in FIGS. 6B and 7B, when the waist gathering elastic member 5a is sandwiched between the folded portions, the waist gather forming elastic member 5a is supplied immediately before folding. Also good. Of course, the folded portion of the first outer sheet 1 and the second outer sheet 2 can be omitted.

  By the way, it is preferable to perform the process which reduces the elastic contraction force of the elastic member 5 to the part with which the absorber 8 of the 1st elastic sheet 6 and the 2nd elastic sheet 7 overlaps before the absorber 8 adheres. By this process, the deformation of the absorber 8 can be prevented.

  Examples of the processing include a method of melting the elastic member 5 by heat embossing or a method of cutting the elastic member 5 with a cutter. In particular, when the elastic member 5 includes the leg gathering elastic member 5b, the opposing edges 6a and 7a of the first elastic sheet 6 or the second elastic sheet 7 provided with the leg gathering elastic member 5b have an outer sheet length. By cutting in the direction A, the elastic member 5b for leg gathers at the portion where the absorbent body 8 overlaps can be removed.

  For example, as shown in FIG. 9, when the elastic member 5b for leg gathers is provided on the first elastic sheet 6, the opposing edge 6a (left inclined hatching area in the figure) is cut in the outer sheet length direction A Thus, it is preferable to remove the leg gathering elastic member 5b where the absorbent body 8 overlaps, and then perform the above step b.

As shown in FIG. 2A, the first elastic sheet 6 and the second elastic sheet 7 to which the absorbent body 8 is fixed are continuously supplied to the process C in the stretched state in the outer sheet length direction A. . In step C, the leg hole 9 is formed using the gap in a state where the first elastic sheet 6 and the second elastic sheet 7 are separated in the outer sheet width direction S. The leg hole 9 is formed by cutting out the opposing edges 6a and 7a (the right inclined hatching region in FIG. 9) between the first elastic sheet 6 and the second elastic sheet 7. Here, as shown in FIGS. 6 (a) and 7 (a), the contour of the leg hole 9 is an elliptical shape or a trapezoidal shape when viewed from the front, taking into consideration the fit and footing properties of the pants-type wearing article 13. It is determined arbitrarily. 6A, when the leg hole 9 is formed, it can be cut across the absorber 8 as indicated by the two-dot chain line.

  The first elastic sheet 6 and the second elastic sheet 7 formed with the leg holes 9 are continuously supplied to the process D shown in FIG. In step D, the first elastic sheet 6 and the second elastic sheet 7 are folded inward and overlapped with each other. And the intermediate part 10 of the outer sheet | seat length direction A of each leg hole 9 is welded with a width | variety in the overlapped state.

  The pants continuum 11 is formed by the above-described process D. In Step D, it can be bonded instead of welding.

  The formed underpants continuous body 11 is continuously supplied to the process e shown in FIG. In process e, the middle 12 of each welded portion of the pants continuous body 11 is cut. Since the elastic member 5 contracts from this moment, as shown in FIG. 3B, a waist gather 21, a leg gather 22, and a fit gather 23 are formed on the pant-type wearing article 13 to be in a completed state.

  A second embodiment of the present invention will be described with reference to FIGS. Hereinafter, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof is omitted. In the second embodiment, the process (a) is different from that in the first embodiment. That is, as shown in FIG. 4A, in step (a), the elastic member 5 stretched in the outer sheet length direction A is sandwiched between the series of outer sheets 14 and the series of inner sheets 15. Attached, both the sheets 14 and 15 and the elastic member 5 are affixed. Thereby, a series of elastic sheets 16 are formed.

  Next, as shown in FIG. 4B, the elastic sheet 16 is cut in the sheet length direction A at the approximate center (or the center) in the sheet width direction S. Thereby, the 1st elastic sheet 6 and the 2nd elastic sheet 7 are formed. The formed first elastic sheet 6 and second elastic sheet 7 are stretched in the outer sheet length direction A and separated in the sheet width direction S, or while being separated from each other in the process b. Continuously supplied.

  As described above, the present invention is not limited to the form in which the first elastic sheet 6 and the second elastic sheet 7 are formed, and may be in a form using a single outer sheet as necessary. As a specific example, a third embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 5A, in the third embodiment, the first inner sheet 3 and the second inner sheet 4 are supplied in a state of being separated on both sides of the outer sheet 17 in the width direction. The sheets 3 and 4 are bonded together, and the elastic member 5 is attached to both sides in the outer sheet width direction. Thereby, the elastic sheet 18 is formed (to process).

Next, as shown in FIG. 5B, the leg hole 9 is formed by die-cutting the gap between the inner sheets 3 and 4 in a state where the elastic sheet 18 extends in the outer sheet length direction A. (Process H). In the third embodiment, since both the inner sheets 3 and 4 are supported by a single outer sheet 17, the elasticity in the stretched state in the outer sheet length direction A regardless of before and after the execution of the above step H. The absorbent body 8 can be passed and fixed between the inner sheets 3 and 4 of the sheet 18 (step G).

DESCRIPTION OF SYMBOLS 1 1st outer sheet 2 2nd outer sheet 3 1st inner sheet 4 2nd inner sheet 5 Elastic member 5b Elastic member for leg gather formation 6 1st elastic sheet 6a, 7a Opposing edge 7 2nd elastic sheet 8 Absorber 9 Leg Hall 13 Pants-type wearing article 14, 17 Outer sheet 15 Inner sheet 16, 18 Elastic sheet

Claims (2)

In the manufacturing method of the pants-type wearing article (13) in which the absorbent body (8) is installed between the leg holes (9, 9), the first inner sheet (3) and the second inner sheet (4) are formed on the outer sheet (17). Are attached in a state separated from each other in the outer sheet width direction (S), and an elastic member (5, 5) is attached in the outer sheet length direction (A) to form an elastic sheet (18) ( To the outer sheet length direction (A), and the step of fixing the absorbent body (8) between the inner sheets (3, 4) of the elastic sheet (18) in the stretched state (G); Forming a leg hole (9) between the inner sheets (3, 4) of the elastic sheet (18) stretched in the outer sheet length direction (A),
Before the step (g), a process of melting the elastic member (5) by heat embossing on the portion where the absorber (8) of the elastic sheet (18) overlaps, or the elastic member (5) by a cutter. We perform processing to shred,
In the step (f), the elastic member (5) is attached so as to be sandwiched between the outer sheet (17) and the first inner sheet (3) or the second inner sheet (4), The elastic member (5) is attached so that the outer edge (1a, 2a) of the outer sheet (17) is folded, and the elastic member (5) has the first inner sheet ( 3) and the outer edge of the outer sheet (17) and (attached served to sandwich the folded portion of 1a) c E stringent gather forming elastic member (5a), the second inner sheet (4) pants-type wearing, wherein said to include a U E strike gather forming elastic members to attach attached so as to sandwich between a folded portion of the outer edge (2a) of the outer sheet (17) (5a) and Method of manufacturing the goods (13). In the pants-type wearing article (13) in which the absorber (8) is installed between the leg holes (9, 9), the first inner sheet (3) and the second inner sheet (4) are arranged on the outer sheet (17) as the outer sheet. A step of forming the elastic sheet (18) by attaching the elastic members (5, 5) in a state of being separated in the width direction (S) and attaching the elastic members (5, 5) in an extended state in the outer sheet length direction (A); A step (g) of passing and adhering the absorbent body (8) between the inner sheets (3, 4) of the elastic sheet (18) stretched in the outer sheet length direction (A), and the outer sheet length. Forming a leg hole (9) between the inner sheets (3, 4) of the elastic sheet (18) stretched in the vertical direction (A);
Before the step (g), a process of melting the elastic member (5) by heat embossing on the portion where the absorber (8) of the elastic sheet (18) overlaps, or the elastic member (5) by a cutter. We perform processing to shred,
In the step (f), the elastic member (5) is attached so as to be sandwiched between the outer sheet (17) and the first inner sheet (3) or the second inner sheet (4), The elastic member (5) is attached so that the outer edge (1a, 2a) of the outer sheet (17) is folded, and the elastic member (5) has the first inner sheet ( 3) and the outer edge of the outer sheet (17) and (attached served to sandwich the folded portion of 1a) c E stringent gather forming elastic member (5a), the second inner sheet (4) wherein and a U E strike gather forming elastic member attaching to served as sandwiched between the folded portion of the outer edge (2a) of the outer sheet (17) (5a) and,
After performing the step (h), the elastic sheet (18) is folded inward in the stretched state in the outer sheet length direction (A) and overlapped with each other. The intermediate portion (10) in the sheet length direction (A) is continuously supplied to the step (d) of welding or bonding with a width, and each welded portion of the pant continuous body (11) formed by the step (d) The middle (12) is continuously supplied to the step (e) of cutting in the stretched state in the outer sheet length direction (A), and the elastic member (5) is contracted by the cutting, and the pants type is worn. Article (13).

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