CN108882996B - Method for manufacturing absorbent article - Google Patents

Method for manufacturing absorbent article Download PDF

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Publication number
CN108882996B
CN108882996B CN201680084279.3A CN201680084279A CN108882996B CN 108882996 B CN108882996 B CN 108882996B CN 201680084279 A CN201680084279 A CN 201680084279A CN 108882996 B CN108882996 B CN 108882996B
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China
Prior art keywords
hole
elastic member
longitudinal direction
absorbent article
belt
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CN201680084279.3A
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CN108882996A (en
Inventor
桂川邦彦
藤井敬司
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Unicharm Corp
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Unicharm Corp
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Publication of CN108882996A publication Critical patent/CN108882996A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators

Abstract

Provided is a method for manufacturing an absorbent article, wherein the absorbent article comprises an abdominal section (30) to be provided on the abdominal side of a wearer, a back section (40) to be provided on the back side of the wearer, and a through hole (50) that penetrates from the skin side to the non-skin side. The method comprises the following steps: an elastic member mounting step of, in a case where the abdominal belt member (300) and the back belt member (400) are transported in the transverse direction, joining the elastic members (350, 450) in a state of being stretched in the transverse direction to the abdominal belt member (300) and the back belt member (400), the abdominal belt member (300) including a plurality of abdominal portions (30) continuous in the transverse direction, the back belt member (400) including a plurality of back portions (40) continuous in the transverse direction; and a through-hole forming step in which the through-hole (50) is formed by cutting at least one of the ventral-side belt-shaped member (300) and the dorsal-side belt-shaped member (400) each having the elastic member (350, 450) attached thereto with a cutter so as to form a cut that penetrates the skin side and the non-skin side in the thickness direction, and cutting the elastic member (350, 450).

Description

Method for manufacturing absorbent article
Technical Field
The present invention relates to a method for manufacturing an absorbent article.
Background
Conventionally, a disposable diaper or the like which absorbs excrement such as urine is known. For example, as described in patent document 1, a pants-type disposable diaper 1 includes an outer body 3 and an absorbent main body 2, and the outer body 3 is provided with a plurality of holes 5 penetrating in a thickness direction. The arrangement of the plurality of holes 5 can enhance the breathability of the absorbent article. Further, in the exterior body 3, wrinkles are formed in the longitudinal direction by contraction of the elastic member 33 in the transverse direction, so that wrinkles are also formed around the hole 5.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2015-
Disclosure of Invention
Problems to be solved by the invention
In the case of manufacturing a disposable diaper described in patent document 1, the following processing is generally performed: while the continuous member, in which the exterior body 3 is continuous in a belt-like manner in the predetermined direction, is being conveyed in the predetermined direction, the continuous member is joined to other members and cut. However, in the case of manufacturing the disposable diaper 1 described in patent document 1, when a part of the outer body 3 is cut to form the hole 5, chips having the same shape as that of the hole 5 are generated. Since such chips interfere with machining and conveyance, a separate process of removing the chips is required, which causes deterioration in manufacturing efficiency and manufacturing cost.
The present invention has been made in view of the foregoing problems, and an object of the present invention is to efficiently manufacture a disposable absorbent article having good air permeability and fit.
Means for solving the problems
The main aspects of the invention for achieving the above object are:
a method of manufacturing an absorbent article having a longitudinal direction and a transverse direction orthogonal to each other, the absorbent article including a ventral portion for being disposed on a ventral side of a wearer, a dorsal portion for being disposed on a dorsal side of the wearer, and a through-hole penetrating from a skin side to a non-skin side, the method comprising: an elastic member mounting step of, in a case where a ventral belt-like member including a plurality of ventral portions continuous in the transverse direction and a dorsal belt-like member including a plurality of dorsal portions continuous in the transverse direction are conveyed in the transverse direction, bonding the elastic member in a state of being stretched in the transverse direction to the ventral belt-like member and the dorsal belt-like member; and a through-hole forming step of forming the through-hole by cutting at least one of the abdominal-side belt-shaped member and the back-side belt-shaped member, each of which is attached with the elastic member, with a cutter to form a slit that penetrates the skin side and the non-skin side in a thickness direction and cutting the elastic member.
Other features of the present invention will become apparent from the description of the specification and the drawings.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a disposable absorbent article having good air permeability and fit can be efficiently manufactured.
Drawings
Fig. 1 is a schematic perspective view showing a diaper 1 as one example of an absorbent article according to the present embodiment.
Fig. 2 is a plan view showing the diaper 1 in an unfolded and stretched state as viewed from the skin side.
Fig. 3 is a view showing a section taken along line a-a in fig. 2.
Fig. 4 is a diagram showing a flow of processes performed when the diaper 1 is manufactured.
Fig. 5 is a conceptual diagram illustrating a process for manufacturing the diaper 1.
Fig. 6A is a view showing a part of the belt-like ventral-side exterior member 300 in an extended state before a slit S (through-hole 50) is formed. Fig. 6B is a view showing a part of the belt-like ventral-side exterior member 300 in an extended state when the slit S (through-hole 50) has been formed. Fig. 6C is a view showing a part of the abdominal-side exterior member 30 in a worn state.
Fig. 7 is a schematic side view showing one example of a through-hole forming apparatus 500 for performing a through-hole forming process.
Fig. 8 is an enlarged view illustrating a portion B of fig. 2.
Fig. 9 is a view illustrating the through-hole 50a formed when the slit S is displaced in the longitudinal direction.
Fig. 10 is a view illustrating the through-hole 50a formed when the slit S is inclined at a predetermined angle with respect to the longitudinal direction.
Fig. 11 is a plan view showing the diaper 100 according to another embodiment when viewed from the skin side.
Detailed Description
At least the following matters will become clear from the description of the present specification with reference to the accompanying drawings.
A method of manufacturing an absorbent article having a longitudinal direction and a transverse direction orthogonal to each other, the absorbent article including a ventral portion for being disposed on a ventral side of a wearer, a dorsal portion for being disposed on a dorsal side of the wearer, and a through-hole penetrating from a skin side to a non-skin side, the method comprising: an elastic member mounting step of, in a case where a ventral belt-like member including a plurality of ventral portions continuous in the transverse direction and a dorsal belt-like member including a plurality of dorsal portions continuous in the transverse direction are conveyed in the transverse direction, bonding the elastic member in a state of being stretched in the transverse direction to the ventral belt-like member and the dorsal belt-like member; and a through-hole forming step of forming the through-hole by cutting at least one of the abdominal-side belt-shaped member and the back-side belt-shaped member, each of which is attached with the elastic member, with a cutter to form a slit that penetrates the skin side and the non-skin side in a thickness direction and cutting the elastic member.
According to the method for manufacturing an absorbent article, since the through-hole can be formed by providing the linear slit, chips are less likely to be generated during the manufacturing process. Therefore, when absorbent articles are continuously manufactured, it is not necessary to separately provide a process for disposing chips. Thus, a disposable absorbent article having good air permeability and fit can be efficiently manufactured.
In such an absorbent article manufacturing method, it is desirable that a center position of the through hole and a position of the elastic member overlapping with the through hole in the longitudinal direction are different from each other in the longitudinal direction.
According to such an absorbent article manufacturing method, the number of gathers formed around the through-hole differs between the upper region and the lower region. Then, in an area where more wrinkles are formed, among the upper area and the lower area, the tops of the wrinkles are inclined inward in the lateral direction of the through-hole, so that the through-hole can be seen smaller in appearance. This can alleviate the wearer and/or the caregiver or the like from fear that excrement or the like may leak from the through hole, while improving breathability.
In such an absorbent article manufacturing method, it is desirable that the through-hole is formed so as to cut the elastic member at: this position is offset from the center position of the slit in the longitudinal direction.
According to such an absorbent article manufacturing method, the center position of the through hole and the position of the elastic member can be easily deviated from each other in the longitudinal direction. This can contribute to the formation of through holes whose shapes are asymmetrical with respect to the longitudinal direction and improve the appearance and breathability of the absorbent article.
In such an absorbent article manufacturing method, it is desirable that a first through hole and a second through hole are formed, and a distance in the longitudinal direction between a center position of the first through hole and a position of a first elastic member overlapping with the first through hole in the longitudinal direction is different from a distance in the longitudinal direction between a center position of the second through hole and a position of a second elastic member overlapping with the second through hole in the longitudinal direction.
According to such an absorbent article manufacturing method, the shape and size of the gathers formed around the through-holes can be made different from each other between the first through-holes and the second through-holes. Thus, the air permeability and the appearance can be freely adjusted according to the arrangement position of the through-hole.
In such an absorbent article manufacturing method, it is desirable that a position at one end of the elastic member in the transverse direction of the through-hole and a position at the other end of the elastic member in the transverse direction of the through-hole are different from each other in the longitudinal direction.
According to such an absorbent article manufacturing method, the positions of the elastic members disposed on both sides of the through-hole are deviated from each other in the longitudinal direction, and these elastic members respectively serve as folding base lines for finely folding the absorbent article in the longitudinal direction. This helps the absorbent article deform in accordance with the body movement of the wearer and improves fit.
In such an absorbent article manufacturing method, it is desirable that the through-hole is formed by cutting the elastic member through the cut inclined at a predetermined angle with respect to the longitudinal direction.
According to such an absorbent article manufacturing method, the position of the right end of the through hole and the position of the left end of the through hole can be offset from each other in the longitudinal direction. This can provide more folded base lines and help the absorbent article deform in accordance with the body movement of the wearer, so that the fit of the absorbent article can be improved.
In such an absorbent article manufacturing method, it is desirable that the absorbent article includes an absorbent main body one end portion of which is overlapped with and joined to the abdominal portion, the other end portion of which is overlapped with and joined to the back portion, and an inner end of the through hole in the lateral direction is located lower than an outer end of the through hole in the lateral direction in the longitudinal direction.
According to such a method for manufacturing an absorbent article, the elastic members provided on both sides of the through hole are inclined, and thereby a contraction force acting upward is applied from the crotch side of the wearer. Thus, the absorbent main body is pulled toward the upper side in the longitudinal direction while being widened toward the outer side in the lateral direction, so that the absorbent article is easily fitted to the body when the absorbent article is worn.
In such an absorbent article manufacturing method, it is desirable that a first through hole and a second through hole are formed, and a distance in the longitudinal direction between a position at one end of a first elastic member in the transverse direction of the first through hole, which overlaps the first through hole in the longitudinal direction, and a position at the other end of the first elastic member in the transverse direction of the first through hole is different from a distance in the longitudinal direction between a position at one end of a second elastic member in the transverse direction of the second through hole, which overlaps the second through hole in the longitudinal direction, and a position at the other end of the second elastic member in the transverse direction of the second through hole.
According to such an absorbent article manufacturing method, the shape of the gathers formed around the through-holes and the direction of the tension applied by the elastic member differ between the first through-holes and the second through-holes, so that the folding base line and texture around the through-holes can be changed. Thus, the fit of the absorbent article can be freely adjusted according to the position where the through-hole is provided.
In such an absorbent article manufacturing method, it is desirable that, in the longitudinal direction, a position of an end of the through hole in the lateral direction overlaps a position of an end of the elastic member on the through hole side.
According to such an absorbent article manufacturing method, since both lateral ends of the through-hole are pulled to the outside in the lateral direction by the elastic member, the through-hole is formed in a rhombic shape. Thus, the air permeability of such through-holes is easily ensured. Further, the aesthetically pleasing diamond shapes of the through holes are arranged in line in the surface of the abdomen-side exterior member (back-side exterior member), thereby improving the appearance of the absorbent article.
In such an absorbent article manufacturing method, it is desirable that a first through hole and a second through hole are formed, and a width of the first through hole in the lateral direction is different from a width of the second through hole in the lateral direction.
According to such a method of manufacturing an absorbent article, the through-holes are formed in shapes that vary depending on the region where they are located in the abdominal-side exterior member (back-side exterior member), so that the design and appearance of the absorbent article can be improved.
In such an absorbent article manufacturing method, it is desirable that a first through hole and a second through hole are formed, and an opening area of the first through hole is different from an opening area of the second through hole.
According to such a method for manufacturing an absorbent article, since the region of the abdomen-side exterior member (back-side exterior member) has a large opening area and a small opening area, the ventilation performance of the through-holes can be adjusted by increasing the opening area of the region where perspiration tends to occur, for example. This makes it possible to reduce the sense of discomfort due to wearing of the absorbent article.
In such an absorbent article manufacturing method, it is desirable that the first through-hole and the second through-hole are formed, and a length of an outer edge of the first through-hole is equal to a length of an outer edge of the second through-hole.
According to such a method for manufacturing an absorbent article, even when the area and shape of the through-hole vary, the strength unevenness around the through-hole can be suppressed. Thus, even in the case where the abdomen-side exterior member (back-side exterior member) is pulled in the lateral direction and/or the longitudinal direction, such as when the absorbent article is worn, the problem that the specific region (the periphery of the specific hole) is easily torn is hardly caused, and the strength of the entire absorbent article is easily ensured.
In such an absorbent article manufacturing method, it is desirable that, in the through-hole forming step, the web-side belt-like member and the back-side belt-like member are conveyed in the conveying direction along the transverse direction by rotating the rotating drum around which the web-side belt-like member and the back-side belt-like member are wound on the outer peripheral surface of the rotating drum, and at least a part of the elastic member is cut in a central region in the transverse direction of the absorbent article in a case where the web-side belt-like member and the back-side belt-like member are conveyed by the rotating drum.
According to such a method for manufacturing an absorbent article, the step of forming the through-hole and the step of cutting a part of the elastic member can be performed using the same apparatus, so that a compact manufacturing facility can be constructed as a whole, and the absorbent article can be manufactured more efficiently.
Disposable diaper according to the present embodiment
< < Structure of Disposable diaper 1 > >)
Fig. 1 is a schematic perspective view showing one example of an absorbent article according to the present embodiment. Fig. 2 is a plan view showing the diaper 1 in an unfolded and extended state as viewed from the skin side. Fig. 3 is a view showing a section taken along line a-a in fig. 2.
In the following description, the diaper 1 in the state of fig. 1 (worn state) has a "longitudinal direction", a "lateral direction" intersecting with the longitudinal direction, and a "thickness direction" intersecting with the longitudinal direction and the lateral direction. The "longitudinal direction" refers to the longitudinal direction of the diaper 1 in the state of fig. 2 (developed state), "upper end" refers to one end and the other end in the longitudinal direction of the diaper 1, and "lower end" refers to a substantially central portion C10 in the longitudinal direction of the diaper 1. In the thickness direction, "skin side" refers to the side that is in contact with the skin of the wearer, and "non-skin side" refers to the side opposite to the skin side. The line a-a in fig. 2 etc. indicates the center in the lateral direction. Note that the "extended state" indicates a state in which the diaper 1 is extended without wrinkles, or more specifically, a state in which the diaper 1 is extended such that the dimensions of the members (e.g., the abdomen-side exterior member 30 and the back-side exterior member 40) constituting the diaper 1 coincide with or are close to the dimensions of these members themselves.
The disposable diaper 1 according to the present embodiment (hereinafter referred to as "diaper 1") is a so-called three-piece pants-type disposable diaper mainly used for babies, and includes an absorbent main body 10 for being arranged in the crotch of a wearer, a ventral-side exterior member (ventral portion) 30 for covering the ventral-side portion of the wearer, and a back-side exterior member (back-side portion) 40.
In the developed state of fig. 2, the absorbent body 10 is disposed across the gap between the front-side exterior member 30 and the back-side exterior member 40 such that the longitudinal ends of the absorbent body 10 are placed on the front-side exterior member 30 and the back-side exterior member 40, respectively, and the absorbent body 10 is fixed to the front-side exterior member 30 and the back-side exterior member 40 from the skin side by an adhesive or the like. The outer shape is substantially H-shaped in plan view. Then, it is folded in two at a folded position which is a substantially central portion C10 in the longitudinal direction, and when the front-side exterior member 30 and the back-side exterior member 40 facing each other are joined/coupled at their front-side exterior member side edge portion 30se and back-side exterior member side edge portion 40se (i.e., respective end portions in the lateral direction), a diaper 1 having a waist opening 1HB and a pair of leg openings 1HL is formed (fig. 1).
In the abdominal-side exterior member 30, the absorbent body 10 is not disposed at the end 30e on the upper side in the longitudinal direction, but is disposed at a portion 30c closer to the center in the longitudinal direction than the end 30 e. Further, in the abdominal-side exterior member 30, the absorbent body 10 is placed in the central portion in the lateral direction, but is not placed in the region 30s located on the outer side in the lateral direction with respect to the lateral end 10e of the absorbent body 10.
Similarly, in the back-side exterior member 40, the absorbent body 10 is not disposed at the end portion 40e on the upper side in the longitudinal direction, but is disposed at the portion 40c closer to the center in the longitudinal direction than the end portion 40 e. Further, in the back-side exterior member 40, the absorbent body 10 is placed in the central portion in the lateral direction, but is not placed in the region 40s located on the outer side in the lateral direction with respect to the lateral end 10e of the absorbent body 10.
As shown in fig. 2 and 3, the absorbent main body 10 includes an absorbent body 11, a top sheet member 13 covering the absorbent body 11 from the skin side, and an inner sheet member 15 covering the absorbent body 11 from the non-skin side. The surface sheet member 13 is a liquid-permeable sheet member such as a nonwoven fabric. The inner sheet member 15 is a sheet member composed of two layers, a liquid-impermeable leakproof sheet 15a made of polyethylene or the like and a liquid-permeable outer sheet 15b such as a nonwoven fabric or the like. Further, a three-dimensional gather (barrier cuff) and/or a leg gather (not shown) may be formed using the exterior sheet 15b or the like.
The absorbent body 11 is an absorbent core obtained by laminating layers of a liquid absorbent material, and is capable of absorbing excrement such as urine. Liquid absorbent fibers such as pulp fibers, absorbent polymers (SAP), and the like can be used for the absorbent body 11, and is in the present embodiment in a substantially hourglass shape in plan view (fig. 2). The absorbent body 11 may be covered with a liquid-permeable sheet (not shown) such as tissue paper or the like.
The front-side exterior member 30 and the back-side exterior member 40 are each a substantially rectangular sheet member in plan view made of a flexible material such as a nonwoven fabric. As shown in fig. 3, in the abdominal-side exterior member 30, the skin side sheet 31 and the non-skin side sheet 32 are laminated and joined in order from the skin side in the thickness direction, and in the back-side exterior member 40, the skin side sheet 41 and the non-skin side sheet 42 are laminated and joined in order from the skin side in the thickness direction.
As shown in fig. 3, in the upper portion of the abdominal-side exterior member 30, the non-skin side sheet 32 is folded back downward to the skin side at an abdominal-side upper end 30et which is the upper end of the abdominal-side exterior member 30 to form a folded-back portion 32f in order to improve texture and durability. Likewise, in the upper portion of the back-side exterior member 40, the non-skin side sheet 42 is folded back downward to the skin side at the back-side upper end 40et which is the upper end of the back-side exterior member 40 to form a folded-back portion 42 f.
Further, the abdominal-side exterior member 30 includes a sheet member 34, and the sheet member 34 is arranged to cover a lower end portion of the folded-back portion 32f and an abdominal-side upper end portion of the absorbent main body 10 from the skin side. Also, the back-side exterior member 40 includes a sheet member 44, and the sheet member 44 is arranged to cover the back-side upper end portion of the absorbent main body 10 from the skin side from the lower side of the folded-back portion 42f of the absorbent main body 10. Each of the sheet members 34 and 44 is a rectangular sheet member made of nonwoven fabric or the like different from the front-side exterior member 30 and the back-side exterior member 40. The provision of the sheet members 34, 44 can prevent the skin of the wearer from directly contacting the abdomen-side upper end edge and the back-side upper end edge in the longitudinal direction of the absorbent main body 10, and can make the texture near the waist of the wearer good when the diaper is worn. Further, the sheet members 34, 44 can increase the strength of the upper end portions of the front-side exterior member 30 and the back-side exterior member 40 in the longitudinal direction.
Further, in the abdominal-side exterior member 30 and the back-side exterior member 40, through holes 50 having a predetermined length in the longitudinal direction and penetrating the exterior members 30, 40 from the skin side to the non-skin side are provided at predetermined intervals in the longitudinal direction and the lateral direction. The through-hole 50 will be described in detail later.
A plurality of elastic members 35, 35 … such as elastic strands (elastic strands) in the transverse direction are disposed between the skin side sheet 31 and the non-skin side sheet 32 of the abdominal-side exterior member 30. The elastic member 35 is joined and fixed to the skin side sheet 31 and the non-skin side sheet 32 in a state of being stretched in the transverse direction with an adhesive. The plurality of elastic members 35, 35 … are arranged to be spaced apart in the longitudinal direction.
Likewise, a plurality of elastic members 45, 45 … such as elastic threads in the transverse direction are disposed between the skin side sheet 41 and the non-skin side sheet 42 of the back-side exterior member 40. The elastic member 45 is joined and fixed to the skin side sheet 41 and the non-skin side sheet 42 in a state of being elongated in the transverse direction with an adhesive. The plurality of elastic members 45, 45 … are arranged at intervals in the longitudinal direction.
The elastic members 35 and 45 give the front-side exterior member 30 and the back-side exterior member 40 stretchability in the lateral direction, and form wrinkles in the front-side exterior member 30 and the back-side exterior member 40. Most of the wrinkles formed in the abdominal-side exterior member 30 and the back-side exterior member 40 have a shape along the longitudinal direction. The shape of the wrinkles will be explained later.
Note that portions of the elastic members 35, 45 near the widthwise central portion, which are located in a region overlapping the absorbent body 11, are discontinuous so as not to impart an extension/contraction force to the region. Thus, contraction of the absorbent body 11 in the lateral direction is suppressed, so that the absorbent body 11 is easily maintained substantially flat, and this makes it possible to suppress leakage of excrement and the like. The side elastic members 35s, 45s are provided in the laterally outer regions of the absorbent body 11.
The elastic member 35 includes: an upper elastic member 35t located on the uppermost side; a continuous elastic member (lower elastic member) 35m provided below the upper elastic member 35t and continuous from a ventral outer covering member side edge portion 30se on one side in the lateral direction to a ventral outer covering member side edge portion 30se on the other side in the lateral direction; a side elastic member (lower elastic member) 35 s; and a lowermost elastic member 35u located at the lowermost side and disposed at the lower side of the continuous elastic member 35m and the side elastic member 35s and farthest from the continuous elastic member 35m and the side elastic member 35 s.
Likewise, the elastic member 45 includes: an upper elastic member 45t located on the uppermost side; a continuous elastic member (lower elastic member) 45m that is provided on the lower side of the upper elastic member 45t and that is continuous from the backside exterior member side edge 40se on one side in the lateral direction to the backside exterior member side edge 40se on the other side in the lateral direction; a side elastic member (lower elastic member) 45 f; and a lowermost elastic member 45u located at the lowermost side and disposed at the lower side of the continuous elastic member 45m and the side elastic member 45s and farthest from the continuous elastic member 45m and the side elastic member 45 s.
< method for producing diaper 1 >
Subsequently, a method of manufacturing the diaper 1 will be explained. Fig. 4 is a flowchart showing the process steps performed when manufacturing the diaper 1. Fig. 5 is a conceptual diagram illustrating a process for manufacturing the diaper 1. The diapers 1 are intermittently produced by performing the processes indicated by S101 to S107 in fig. 4 on the manufacturing line of the diapers 1.
First, a suitable conveyance mechanism is used to convey the base material of the diaper 1 in a predetermined conveyance direction at a predetermined conveyance speed (S101). Here, the "base material of the diaper 1" includes the belt-shaped non-skin side sheet 320 and the belt-shaped non-skin side sheet 420, and in the belt-shaped non-skin side sheet 320, the non-skin side sheet 32 constituting each abdominal-side exterior member 30 is in a state of being continuous in the transverse direction, and in the belt-shaped non-skin side sheet 420, the non-skin side sheet 42 constituting each back-side exterior member 40 is in a state of being continuous in the transverse direction. Further, the "transport direction" is a direction along the aforementioned "lateral direction". The following steps are performed in a state where the belt-shaped non-skin side sheet 320 and the belt-shaped non-skin side sheet 420 are conveyed in the conveyance direction. However, the belt-shaped skin side sheet 310 in which the skin side sheet 31 each constituting the abdominal-side exterior member 30 is in a laterally continuous state and the belt-shaped skin side sheet 410 in which the skin side sheet 41 each constituting the back-side exterior member 40 is in a laterally continuous state may be conveyed.
Next, the continuous elastic member 350, in which the elastic member 35 is continuous in the transverse direction, is attached to the base material of the diaper 1 (S102). In this elastic member mounting process, while the continuous elastic member 350 is elongated in the transverse direction (conveyance direction), the continuous elastic member 350 is at least partially provided with an adhesive and is aligned in the crosswise direction (i.e., in the longitudinal direction) that intersects the conveyance direction on the belt-shaped non-skin side sheet 320. Then, the belt-shaped skin side sheet 310 is placed on the belt-shaped non-skin side sheet 320 and the continuous elastic member 350 in the thickness direction. Then, the belt-shaped non-skin side sheet 320 and the belt-shaped skin side sheet 310 are joined to each other via the continuous elastic member 350 provided with an adhesive, and the belt-shaped abdominal-side exterior member (abdominal-side belt member) 300 is formed and the continuous elastic member 350 is attached to the belt-shaped abdominal-side exterior member 300. Likewise, the belt-shaped non-skin side sheet 420 and the belt-shaped skin side sheet 410 are joined to each other via the continuous elastic member 450 to form a belt-shaped back-side exterior member (back-side belt-shaped member) 400 and the continuous elastic member 450 is attached to the belt-shaped back-side exterior member 400.
Next, through-holes 50 are formed at least in one of the belt-shaped ventral-side sheathing member 300 and the belt-shaped dorsal-side sheathing member 400 (S103). The via forming process will be described later.
Subsequently, the absorbent main body 10 spans the gap between the belt-shaped front-side exterior member 300 and the belt-shaped back-side exterior member 400, which are transported in the transport direction, in the direction intersecting the exterior members, and the absorbent main body 10 is joined to the exterior members (S104). Note that the through-hole forming process (103) may be performed after the absorbent body joining process (S104). That is, the through-holes 50 may be formed after the absorbent body 10 is joined to the belt-shaped abdominal-side exterior member 300 (belt-shaped back-side member 400). However, it is desirable to perform the through-hole forming process (103) before the dicing process (S107).
Next, the absorbent body 10 is folded at the central portion C10 in the cross direction such that the belt-like front-side exterior member 300 is placed on the belt-like back-side exterior member 400 in the thickness direction (S105).
Subsequently, the belt-shaped front-side exterior member 300 is joined to the belt-shaped rear-side exterior member 400 at a position corresponding to the front-side exterior member side edge portion 30se (rear-side exterior member side edge portion 40se) serving as both lateral end portions of the front-side exterior member 30 (rear-side exterior member 40) (S106).
Subsequently, the belt-shaped abdominal-side exterior member 300 and the belt-shaped back-side exterior member 400 are cut at positions corresponding to both lateral end portions of the diaper 1 (i.e., the exterior member side edge portions 30se, 40se), thereby cutting out each diaper 1 from the belt-shaped member (S107). Thus, during the transfer operation, the series of processes is continuously performed, so that the diaper 1 can be efficiently manufactured.
< description of Via hole Forming Process >
A specific operation performed in the through-hole forming process (S103) illustrated in fig. 4 will be described. Fig. 6A is a view showing a part of the belt-like ventral-side exterior member 300 in an extended state before a slit S (through-hole 50) is formed. Fig. 6B is a view showing a part of the band-shaped ventral-side exterior member 300 in an extended state when the slit S (through-hole 50) has been formed. Fig. 6C is a view showing a part of the abdominal-side exterior member 30 when the diaper is worn.
Fig. 6A shows the belt-shaped ventral-side exterior member 300 before the seam S is formed in a state of being stretched so that the belt-shaped skin side sheet 310 and the belt-shaped non-skin side sheet 320 have substantially no wrinkle.
Subsequently, as shown in fig. 6B, a linear seam S having a longitudinal component is formed so as to laterally cut off a part of the continuous elastic member 350 in the band-shaped abdominal-side exterior member 300 in an extended state. The slit S is formed by cutting the belt-shaped skin side sheet 310, the continuous elastic member 350, and the belt-shaped non-skin side sheet 320. Specifically, the slit S is formed by forming a through-cut in the thickness direction in the band-shaped skin side sheet 310 and the band-shaped non-skin side sheet 320 using a predetermined cutter (including a non-contact cutter such as a laser cutter) and cutting the continuous elastic member 350. Fig. 6B shows the moment when the slit S (cut) has been formed. Then, the formed slit S generates the through-hole 50 as in fig. 6C by the elastic force of the continuous elastic member 350.
Fig. 7 is a schematic side view showing one example of a through-hole forming apparatus 500 for performing a through-hole forming process. The through-hole forming apparatus 500 includes an anvil roll 510, a cutter roll 520, and an auxiliary transfer roll 530. The anvil roll 510 is a rotating drum (rotating body) that rotates about a rotation axis, and has a suction mechanism, not shown, on its peripheral surface. Then, the anvil roll 510 rotates together with the belt-like front-side exterior member 300 (belt-like back-side exterior member 400) sucked and fixed to the circumferential surface thereof, so that the belt-like front-side exterior member 300 (belt-like back-side exterior member 400) is conveyed in the rotation direction. The anvil block 511 is provided on the circumferential surface of the anvil roll 510. The anvil block 511 is a member that is long in the axial direction of the anvil roll 510 (corresponding to the cross direction in fig. 5). Further, the cutter roller 520 is a rotating body disposed at a position facing the anvil roller 510, and a cutter block 521 along an axial direction (corresponding to a crossing direction) of the cutter roller 520 is provided on a circumferential surface of the cutter roller 520. Then, while the anvil roll 510 rotates, the cutter roll 520 rotates in the opposite direction so that the anvil block 511 and the cutter block 521 are in their periodically facing relationship with each other. A cutout portion along the axial direction (cross direction) is provided in the cutout block 521, and a slit S having a component in the cross direction (longitudinal direction) is formed in the base material when the cutout portion and the anvil block 511 of the anvil roller 510 face each other and contact the base material. The auxiliary transfer rollers 530 are provided upstream and downstream in the conveying direction of the anvil roller 510 to adjust the magnitude of the tension applied to the belt-shaped web-side exterior member 300 being transferred while assisting the belt-shaped web-side exterior member 300 in being transferred along the circumferential surface of the anvil roller 510. The constant tension applied during the transport reduces the generation of displacements of the slit S.
Note that the through-hole forming device 500 may have a function of cutting a part of the continuous elastic member 350, 450. Fig. 2 shows that the elastic members 35, 45 are discontinuous in the region near the widthwise central portion where the elastic members 35, 45 overlap the absorbent body 11 so as to prevent the extension/contraction force from acting on the region, and in the region, the continuous elastic members 350, 450 are cut by the through-hole forming device 500. In this case, an elastic member cutting roller 540 having the same function as the cutting roller 53 is provided at a position facing the anvil roller 510 (refer to fig. 7), so that the continuous elastic members 350, 450 can be accurately cut. This makes it possible to perform the process of forming the through-hole 50 and the process of cutting a part of the continuous elastic member 350, 450 using the same apparatus, so that a compact manufacturing apparatus can be constructed, and the diaper 1 can be manufactured more efficiently. Note that the continuous elastic member 350, 450 may be cut at one position in the conveyance direction (lateral direction), or the continuous elastic member 350, 450 may be cut at a plurality of positions.
The slit S according to the present embodiment is a linear slit and can be formed only by cutting in the material. Thus, unlike the case where a shape having a predetermined area is cut in a conventional diaper manufacturing method, cutting waste is not easily generated. Thus, as shown in fig. 5, when diapers 1 are continuously manufactured while the base material is transported, it is possible to form the through-holes 50 without separately providing a process of disposing such chips. Further, the interference with the normal operation of the manufacturing equipment (such as the through-hole forming device 500) of the diaper 1 due to the generation of the chips is suppressed and/or the failure of the manufacturing equipment is reduced. This makes it possible to improve the productivity of the diaper 1 and further reduce the manufacturing cost of the diaper 1 and the maintenance cost of the manufacturing equipment.
Fig. 6C shows a part of the abdominal-side exterior member 30 when the diaper 1 is worn by the wearer. The through-hole 50 in the abdominal-side exterior member 30 is formed in a substantially rhombic shape so that its outline opens toward both sides in the transverse direction when the diaper is worn. This is because, as shown in fig. 6C, the elastic member 35 contracts to pull the periphery of the through hole 50 in the lateral direction. Thus, the through holes 50 are largely opened when the diaper is worn, so that the breathability of the diaper 1 can be enhanced. By opening each individual through-hole 50 more largely, the breathability of the diaper 1 can be ensured with a smaller number of through-holes 50. Further, even in the state before the diaper is put on, the through-holes 50 can be opened in the lateral direction by the elastic members 35 in the contracted state, and this enables a caregiver or the like who helps a wearer such as an infant to put on the diaper 1 to visually observe the through-holes 50 and recognize improvement in air permeability.
Further, the contracted elastic member 35 pulls the nonwoven fabric around the through-hole 50, thereby forming wrinkles along the contour of the through-hole 50. These wrinkles can soften the texture of the diaper 1. In particular, in the case where the through-hole is formed with the predetermined notch, the through-hole is opened with its periphery substantially flat. However, in the present embodiment, since the through-hole 50 is formed by the linear slit S, the nonwoven fabric pulled through the opened hole is lifted up to form wrinkles around the through-hole 50. This makes it possible to improve the texture of the diaper 1.
The through-hole 50 of the backside exterior member 40 is formed in the same manner as the through-hole 50 of the ventral exterior member 30. Note that in the present embodiment, the description is made in consideration of the case where the through-hole 50 of the back-side exterior member 40 and the through-hole 50 of the stomach-side exterior member 30 are formed separately, but is not limited thereto. The front-side exterior member 30 and the back-side exterior member 40 may be separated from each other (S107) after the front-side exterior member 30, the back-side exterior member 40, and the through-hole 50 are integrally formed (S106).
< details of Forming Via 50 with slit S >
Details of the configuration of the through-hole 50 formed in the diaper 1 according to the present embodiment will be explained. As shown in fig. 2, the through-holes 50 of the abdomen-side exterior member 30 are provided in the region of the abdomen-side exterior member 30 where the folded-back portion 32f, the sheet member 34, and the absorbent main body 10 are not provided. Specifically, the through-holes 50 are provided in a region on the lower side in the longitudinal direction than the end portions 30e and on the lower side than the lower end of the sheet member 34, and are provided on the outer side of the absorbent main body 10 in the lateral direction. The through holes 50 are disposed on one side and the other side of the front side exterior member 30 in the lateral direction so as to be symmetrical to each other with respect to the center a-a in the lateral direction.
The through-hole 50 is provided below the upper elastic member 35t located on the uppermost side in the longitudinal direction of the abdominal-side exterior member 30, and is provided above the lowermost elastic member 35u located on the lowermost side of the abdominal-side elastic member 30. The continuous elastic member 35m and the side elastic member 35s are partially discontinuous due to the through hole 50. This is because, as described above, when the through-hole 50 is formed, the continuous elastic member 350 is cut together with the belt-shaped skin side sheet 310 and the belt-shaped skin side sheet 320. The upper elastic member 35t and the lowermost elastic member 35u are not discontinuous by the through hole 50.
In the present embodiment, the through holes 50 are arranged in a staggered manner. Fig. 8 is an enlarged view showing a portion B in fig. 2. Fig. 8 shows: a through hole 50a (first through hole); a through hole 50b (second through hole) located diagonally above the through hole 50a and adjacent to the through hole 50a in the longitudinal direction; a through hole 50c (third through hole) which is located on the upper side of the through hole 50a and overlaps with the through hole 50a in the lateral direction; and a through hole 50d located on the left side of the through hole 50a in the lateral direction and overlapping the through hole 50a in the longitudinal direction. Further, the elastic member 35a (first elastic member) overlaps with the through hole 50a and the through hole 50d in the longitudinal direction, and similarly, the elastic member 35b (second elastic member) overlaps with the through hole 50b in the longitudinal direction, and the elastic member 35c (third elastic member) overlaps with the through hole 50c in the longitudinal direction. In the longitudinal direction, the elastic member 35d is disposed lower than the through-hole 50a, the elastic member 35e is disposed between the through-hole 50a and the through-hole 50b, and the elastic member f is disposed between the through-hole 50b and the through-hole 50 c. The elastic members 35d, 35e, 35f do not overlap any through hole 50 in the longitudinal direction. Note that the elastic member 35c corresponds to the continuous elastic member 35m, the elastic members 35a, 35b, 35e, 35f correspond to the side elastic member 35s, and the elastic member 35d corresponds to the lowermost elastic member 35 u.
As shown in fig. 8, such a through hole 50 has a substantially rhombic shape, and the inside of the through hole 50 penetrates to the non-skin side. At this time, the lateral vertexes of the substantially rhombic shape and the cut end of the elastic member 35 are at substantially the same positions, respectively. Thus, the cut elastic member 35 is not provided inside the through hole 50, and the cut elastic member 35 is discontinuous in the transverse direction at the through hole 50. This is because, when the through-hole 50 is formed, the elastic member 35 provided at the position where the through-hole 50 is formed is cut together. Thus, for example, the elastic member 35a is continuous from the outer side in the lateral direction of the through hole 50a to the outer side in the lateral direction of the through hole 50d, and is not provided inside the through hole 50a and the through hole 50 d. Likewise, the elastic member 35b is not provided in the through hole 50b, and the elastic member 35c is also not provided in the through hole 50 c.
Further, no adhesive or the like is provided in a rectangular region (a portion indicated by an oblique line from the upper right to the lower left in fig. 8) circumscribing the through hole 50 surrounded by the side g along the transverse direction and the side h along the longitudinal direction. In the present embodiment, the skin side sheet 31 and the non-skin side sheet 32 are joined by an adhesive applied to the elastic member 35.
Further, in the present embodiment, the through holes 50 have substantially the same size, and the through holes 50a and 50c overlap each other in the lateral direction along the longitudinal direction. Thus, L1 is greater than L2(L1 > L2), where L1 is the distance in the longitudinal direction between the lower end of the through-hole 50a and the lower end of the through-hole 50c, and L2 is the length in the longitudinal direction of the through-hole 50.
L3 is smaller than L2(L3 < L2), where L3 is the length in the longitudinal direction between an elastic member discontinuous due to the through-hole 50 and an elastic member adjacent to the discontinuous elastic member in the longitudinal direction and not discontinuous due to the through-hole 50, and L2 is the length of the through-hole 50. For example, the distance L3 between the elastic member 35a and the elastic member 35e is smaller than the length L2 in the longitudinal direction of the through-hole 50.
Further, according to the manufacturing method of the diaper 1 of the present embodiment, the shape of the through-hole 50 and the arrangement of the elastic member 35 overlapping the through-hole 50 in the longitudinal direction can be changed according to how the slit S is formed as described below.
Fig. 9 is a view illustrating the through-hole 50a formed when the slit S is displaced in the longitudinal direction. In fig. 9, a through hole 50a is formed by cutting a portion of the slit S below the elastic member 35a so as to be longer when the slit S is formed. That is, by cutting the elastic member 35a at a position deviated from the center position in the longitudinal direction of the slit S, the center position of the through hole 50a in the longitudinal direction can be easily displaced from the position of the elastic member 35 a. In the case of fig. 9, in the longitudinal direction, a distance Lu from an upper side apex (hereinafter, also simply referred to as an upper end et) of the through hole 50a to the elastic member 35a is smaller than a distance Ld from a lower side apex (hereinafter, also simply referred to as a lower end eb) of the through hole 50a to the elastic member 35 a. That is, the center position C in the longitudinal direction of the through hole 50a is at a lower side than the elastic member 35a in the longitudinal direction, and the through hole 50a has a shape asymmetrical with respect to the longitudinal direction. Note that fig. 9 shows the through-hole 50a, however, other through-holes 50 (e.g., through-hole 50b, through-hole 50c) may be formed with the slit S shifted in the longitudinal direction as well. In this case, the distances Lu and Ld may be different from the case in fig. 9. That is, the displacement amount in the longitudinal direction may vary with the through hole 50.
Fig. 10 is a view illustrating a through hole 50a formed when the slit S is inclined at a predetermined angle with respect to the longitudinal direction. In fig. 10, when the slit S is formed, the slit S is formed such that the center position C of the slit S intersects the elastic member 35a (continuous elastic member 350) and the slit S is inclined to the right side (outer side in the lateral direction in fig. 10) at an angle θ with respect to the longitudinal direction, thereby forming the through hole 50 a. This enables the position of one side in the lateral direction of the through-hole 50a to be easily displaced from the position of the other side in the lateral direction of the through-hole 50a in the longitudinal direction. In the case of fig. 10, the lateral right-side end er (hereinafter, also simply referred to as right end er) of the through-hole 50 is located on the lower side of the center position C in the longitudinal direction. This is because, in the contour of the through hole 50a, the length between the upper end et and the right end er is equal to the length between the lower end eb and the right end er and forms an isosceles triangle with the right end er as a vertex, and the right end er is located on the lower side of the center position C according to the inclination of the slit S. Then, since the right end er is displaced to the lower side of the center position C, the position of the cut end (i.e., the end located on the through hole 50a side) of the elastic member 35a is also displaced to the lower side of the center position C in the longitudinal direction. For the same reason, a widthwise left end el (hereinafter, also simply referred to as left end el) of the through hole 50a is located on an upper side of the center position C in the longitudinal direction. Then, since the position of the left end el is shifted to the upper side of the center position C, the position of the cut end (the end on the through hole 50a side) of the elastic member 35a is also shifted to the upper side of the center position C in the longitudinal direction in fig. 10.
As a result, the through-hole 50a is formed in a diamond shape inclined at an angle θ with respect to the longitudinal direction as in fig. 10, so that the position of the left end el of the through-hole 50 in the longitudinal direction is different from the position of the right end er. In fig. 10, the position of the left end el of the through hole 50a is shifted from the position of the right end er by d50a in the longitudinal direction. Thus, the positions of the elastic members 35a disposed at both lateral sides of the through-hole 50a are offset from each other by d50a in the longitudinal direction. Further, the position of the upper end et of the through-hole 50 is deviated from the position of the lower end eb by w50a in the lateral direction according to the deviation amount d50a generated in the longitudinal direction. Thus, the through-hole 50a has an asymmetrical shape with respect to the longitudinal and lateral directions.
Note that fig. 10 shows the through-hole 50a, however, other through-holes 50 (e.g., through-hole 50b, through-hole 50c) may be formed in such a manner that the slit S is inclined with respect to the longitudinal direction as well. In this case, the inclination angle θ of the slit S may vary with each slit S. That is, the amount of deviation d50a in the longitudinal direction and the amount of deviation w50a in the lateral direction may vary for each through-hole 50.
< effectiveness of diaper 1 >
In the diaper 1 manufactured by the manufacturing method according to the present embodiment, it is possible to improve air permeability with the through-hole 50 penetrating from the skin side to the non-skin side, and adjust the tension of the elastic member 35 with the elastic member 35 being cut.
For example, a case of the through hole 50a and the through hole 50d overlapping with the elastic member 35 in the longitudinal direction in fig. 8 will be explained. The elastic members 35a and 35e are elastic members of the same material, and the elastic members 35a and 35e are joined and fixed to the skin side sheet 31 and the non-skin side sheet 32 in the same stretched state before the slits S (the through holes 50a and 50d) are formed. The elastic member 35a is cut with the slits S (the through hole 50a and the through hole 50d), and the elastic member 35e is cut without any slits S. Then, the tension Ta1 is smaller than the tension Te (Ta1 < Te), where Te is the magnitude of the tension in the lateral direction of the elastic member 35e adjacent to the elastic member 35a in the longitudinal direction, and Ta1 is the magnitude of the tension in the lateral direction of the elastic member 35a provided from the left side (center side) of the through hole 50d to the position where the elastic member 35a overlaps the absorber 11 in the thickness direction. Likewise, the tension Ta2 is smaller than the tension Te (Ta2 < Te) and the tension Ta2 is also smaller than the tension Ta1(Ta2 < Ta1), where Ta2 is the magnitude of the tension of the elastic member 35a between the through-hole 50d and the through-hole 50a in the lateral direction.
Further, since the elastic member 35a is discontinuous by the through holes 50a, 50d, etc., the elastic member 35a can be more freely stretched and contracted when a force in the longitudinal and lateral directions is applied than in the case where the elastic member is continuous. That is, the elastic member 35a located on the left side of the through hole 50d and the elastic member 35a located between the through hole 50a and the through hole 50d can be more freely stretched and contracted according to the movement than the case where the elastic members are continuous, so that the diaper 1 more easily follows not only the movement in the lateral direction but also the movement in the longitudinal direction. This can improve the fit of the abdomen and buttocks of the diaper 1.
Therefore, the elastic member 35 cut with the slit (S) (the through hole (S) 50) and the elastic member 35 not cut with the slit (S) (the through hole (S) 50) are provided, so that the tension of the elastic member 35 can be adjusted to suppress excessive fastening to the waist portion while ensuring fastening to the waist portion, so that the fitting property of the diaper 1 can be enhanced.
Further, when the through hole 50 is formed, the center position C of the slit S may be displaced from the elastic member 35 in the longitudinal direction. In this case, as shown in fig. 9, the center position C of the through hole 50 (through hole 50a) and the position of the elastic member 35 (elastic member 35a) are different in the longitudinal direction, so that the through hole 50 can be formed into a shape asymmetrical with respect to the longitudinal direction. Thus, wrinkles formed by the rise of the nonwoven fabric provided around the through-hole 50 are formed more in the region around the lower side of the through-hole 50 (the lower side of the elastic member 35a in fig. 9) than in the region around the upper side of the through-hole 50 (the long side of the elastic member 35a in fig. 9). For example, when the state in which the abdominal-side exterior member 30 is stretched changes to a state in which the abdominal-side exterior member 30 is hardly stretched (for example, before the diaper 1 is worn), the top of the wrinkle formed around the lower side of the through hole 50a (the end of the wrinkle in the thickness direction) falls inward of the transverse line of the through hole 50 a. As a result, even when the through-hole 50 is largely opened, the lower side of the through-hole 50 is made to look smaller in appearance. This can alleviate the wearer and/or the caregiver or the like from fear that excrement or the like may leak from the through hole, while improving breathability. Note that the center position C of the through hole 50a (slit S) in the longitudinal direction and the center position of the elastic member 35a can be changed appropriately, and the center position of the through hole 50a in the longitudinal direction does not necessarily have to be arranged on the lower side of the center position of the elastic member 35 a. A center position C of the through hole 50a in the longitudinal direction may be arranged on an upper side of the center position of the elastic member 35 a.
Further, the shape and size of the wrinkle formed around the through-hole 50 can be changed by changing the amount of displacement of the center position C of the through-hole 50 in the longitudinal direction. For example, the amount of displacement in the longitudinal direction between the center position C of the first through hole 50a and the first elastic member 35a and the amount of displacement in the longitudinal direction between the center position C of the second through hole 50b and the second elastic member 35b are made different from each other. Then, the shape and size of the gathers formed around the through-hole 50a and the shape and size of the gathers formed around the through-hole 50b become different from each other, so that the air permeability and/or appearance of the diaper 1 can be freely adjusted according to the arrangement position of the through- holes 50a, 50 b.
Further, when the through-hole 50 is formed, the slit S may be inclined at a predetermined angle with respect to the longitudinal direction. In this case, as shown in fig. 10, the position of the left end el and the position of the right end er of the through hole 50 (through hole 50a) are different in the longitudinal direction, so that the through hole 50 can be made asymmetrical with respect to the longitudinal direction and the lateral direction. Then, the position in the longitudinal direction of the elastic member 35a arranged to overlap the through hole 50a in the longitudinal direction also differs between both sides of the through hole 50 a. When the wearer moves his body while wearing the diaper 1, the abdominal-side exterior member 30 is deformed to be folded in the longitudinal direction with the position of the elastic member 35 arranged in the transverse direction serving as a base line. That is, when the diaper 1 is folded in the longitudinal direction, the elastic member 35 serves as a folding base line. Thus, as in fig. 10, the positions of the elastic member 35 in the longitudinal direction at both sides of the through-hole 50 in the transverse direction are different from each other (in the case of fig. 10, d50a represents the amount of deviation), so that the base line for folding in the longitudinal direction can be increased from one place (the case of no deviation in the longitudinal direction) to two places (the case of deviation in the longitudinal direction). Thus, the abdominal-side exterior member 30 is finely folded in the longitudinal direction, so that the diaper 1 is easily deformed following the movement of the wearer's body, thereby improving the fit.
Then, the positions in the longitudinal direction of the elastic members 35 at both sides in the transverse direction of the through-hole 50 are deviated, thereby suppressing the elastic members linearly extending long in the transverse direction from leaving marks on the wearer's skin. Further, the position where the aforementioned tension Ta1 acts and the position where the tension Ta2 acts are different from each other in the longitudinal direction, so that different forces act in the up-down direction and the left-right direction of the through-hole 50, so that the shape of the wrinkle formed around the through-hole 50 becomes asymmetric up-down, left-right. Thus, the rise (wrinkle) of the nonwoven fabric in the outer edge of the through-hole 50 is irregular, and a large and long wrinkle is hardly formed. Thus, it is possible to suppress the application of local pressure on the skin of the wearer and/or the trace of wrinkles from remaining on the skin of the wearer when the diaper 1 is worn, so that the texture can be further improved.
Further, in the example of fig. 10, the through-hole 50 is inclined to the outer side in the lateral direction. In this case, in the longitudinal direction, a left end el (inner end in the lateral direction) of the through hole 50 is higher than the center position C of the through hole 50, and a right end el (outer end in the lateral direction) is lower than the center position C of the through hole 50. That is, the position of the elastic member 35 at the right end er of the through hole 50 is lower than the position of the elastic member 35 at the left end el of the through hole 50. In the case where such through holes 50 are arranged to be aligned at the same position in the lateral direction, the elastic member 35 is inclined with respect to the lateral direction between two through holes 50 adjacent to each other. For example, in fig. 8, between the through hole 50a and the through hole 50d adjacent to each other in the lateral direction, the elastic member 35a is inclined upward from the right end er of the through hole 50d toward the left end el of the through hole 50 a. Thus, in the abdominal-side exterior member 30 (back-side exterior member 40), a contraction force acting obliquely upward (outward in the lateral direction and upward in the longitudinal direction) from the crotch side (inward in the lateral direction and downward in the longitudinal direction) of the wearer is exerted by the elastic members 35 a. Then, in the diaper 1, the elastic members 35 overlapping the through holes 50 in the longitudinal direction (i.e., the elastic members 35 cut by the through holes 50) exert a contractive force obliquely upward from the crotch side of the wearer. With this contractive force, the absorbent main body 10 is pulled toward the upper side in the longitudinal direction while being widened toward the outer side in the lateral direction, so that the absorbent main body 10 is easily fitted to the body while the diaper 1 is worn.
Further, in the through hole 50, the deviation amount d50 in the longitudinal direction at both ends in the lateral direction of the through hole 50 can be made different by changing the inclination angle θ with respect to the longitudinal direction. For example, the amount of deviation d50a in the longitudinal direction in the first through hole 50a and the amount of deviation d50b in the longitudinal direction in the second through hole 50b are made different from each other. Then, the shape and size of the wrinkle formed around the through hole 50a and the shape and size of the wrinkle formed around the through hole 50b are made different from each other, and further, the direction of the tension applied by the elastic member 35a and the direction of the tension applied by the elastic member 35b are made different from each other. Thus, the folding base line and texture can be changed according to the arrangement position of the through holes 50a, 50b, so that the fit of the diaper 1 can be freely adjusted.
Further, in the example of fig. 10, the position of the upper end et and the position of the lower end eb of the through hole 50 are deviated from each other in the lateral direction by w50, so that the fitting property can be improved. In the diaper 1, the elastic member 35 contracts in the transverse direction to form longitudinal gathers in the abdominal-side exterior member 30 along the longitudinal direction. If the upper end et and the lower end eb of the through hole 50 overlap in the lateral direction, the longitudinal wrinkles are easily formed on a straight line passing through the upper end et and the lower end eb in the longitudinal direction, so that large wrinkles long from the upper end to the lower end of the abdominal-side exterior member 30 are easily formed. In this case, when the diaper 1 is worn, the wrinkles are pressed against the skin of the wearer, so that traces of such wrinkles are easily left on the skin. However, in the diaper 1 manufactured in the present embodiment, since the upper end et and the lower end eb of the through-hole 50 are deviated in the lateral direction, the longitudinal gathers are broken at the upper and lower sides of the through-hole 50, so that the macro gathers are hardly formed as compared with the foregoing case. Further, since a plurality of fine longitudinal gathers are formed side by side in the lateral direction, the longitudinal gathers serve as base lines for folding the diaper in the lateral direction, so that the diaper 1 can be deformed in accordance with the movement of the wearer. Thus, the fit of the diaper 1 can be improved.
Further, as long as the through-holes 50 have an asymmetrical shape with respect to at least one of the lateral direction and the longitudinal direction, as shown in fig. 9 and 10, each through-hole 50 can be made conspicuous, thereby improving visibility. Therefore, the user can see the through-hole 50 (vent) provided in the abdominal-side outer cover member 30 at a glance and can securely put the diaper 1 on the wearer. Further, since the shape of the through-hole 50 is asymmetric, the gathers formed around the through-hole 50 also become asymmetric, so that the texture when the diaper 1 is worn can be improved.
Note that in any case shown in fig. 8 to 10, the width in the lateral direction of each through-hole 50 may be different. For example, the distance in the lateral direction between the left end el and the right end er may be different for the through hole 50a (first through hole) and the through hole 50b (second through hole) in fig. 8. With such a structure, the through-hole 50 having a shape different depending on each region in the abdominal-side exterior member 30 can be formed, and the design and appearance of the diaper 1 can be improved.
Likewise, the opening area of each through-hole 50 may be different. For example, the area of the opening portion (i.e., the area of the diamond shape) may be made different between the through hole 50a (first through hole) and the through hole 50b (second through hole) in fig. 8. With such a configuration, a large opening area and a small opening area can be provided according to the region in the abdominal-side exterior member 30, and thus the air permeability of the through-hole 50 can be adjusted, for example, by increasing the opening area around the leg and/or the back side that is prone to perspiration. Accordingly, generation of wetness or the like when the diaper 1 is worn can be suppressed, and a feeling of discomfort due to wearing of the diaper can hardly be caused.
Thus, even if the opening area and/or the shape of the through-hole 50 are different, as long as the length of the slit S is constant, the length of the outer edge of the through-hole 50 (the circumferential length of the through-hole 50) is constant. In other words, in the through hole 50, the total value of the distance between the upper end et and the left end el, the distance between the left end el and the lower end eb, the distance between the lower end eb and the right end er, and the distance between the right end er and the upper end et is constant. For example, in fig. 8, the circumference of the outer edge of the first through-hole 50a is equal to the circumference of the outer edge of the second through-hole 50 b. That is, in the through-hole 50, the length of a portion to be cut in a material (e.g., nonwoven fabric) is constant, so that the variation in strength around the through-hole 50 is small. Thus, even when the abdominal-side exterior member 30 is pulled in the lateral direction or the longitudinal direction in a state where the diaper 1 is worn or the like, such a problem that a specific region (the periphery of the specific through hole 50) is easily torn is hardly caused, so that the strength of the entire diaper 1 can be ensured.
Further, in the diaper 1 according to the present embodiment, both lateral ends el, er of the through-hole 50 and the cut end of the elastic member 35 (the end on the through-hole side) that has been cut by the seam S are in positions that overlap in the longitudinal direction. Then, both lateral ends el, er of the through hole 50 are pulled to the outside in the lateral direction by the elastic member 35, so that the through hole 50 is formed in a rhombic shape having vertices of a left end el, a right end er, an upper end et, and a lower end eb. Thus, sufficient air permeability is ensured, and the beautiful rhombus shape is arranged to be aligned in the surface of the abdomen-side exterior member 30, thereby improving the appearance of the diaper 1. Further, the cut end of the elastic member 35 is at a position on the outer side in the lateral direction of both lateral ends el, er of the through hole 50 so that the cut end does not protrude into the through hole 50. That is, since the cut ends of the elastic members 35 do not protrude inward from both ends of the through-hole 50 in the lateral direction, the cut ends of the elastic members 35 are suppressed from coming into direct contact with the skin of the wearer when the diaper 1 is worn, so that the wearer hardly feels discomfort.
In the present embodiment, the abdominal-side exterior member 30 includes a skin-side sheet 31 and a non-skin-side sheet 32; the elastic member 35 is disposed between the skin side sheet 31 and the non-skin side sheet 32; the adhesive was not applied to the following rectangular areas: the rectangular area circumscribes at least the through-hole 50 and has a side g along the transverse direction and a side h along the longitudinal direction. This can alleviate insufficient opening and/or hardening around the through-hole 50 in the rectangular region caused by hardening of the adhesive. Further, since the region is not hardened by the adhesive, appropriate wrinkles are formed around the through-hole 50 by the inherent softness of a material such as a nonwoven fabric, so that a softer texture can be provided.
Further, in the present embodiment, the through hole 50b is adjacent to the through hole 50a in the longitudinal direction, and in the longitudinal direction, the elastic member 35e as the other elastic member is disposed between the through hole 50a and the through hole 50 b. Thus, even in the case where the elastic members 35a, 35b discontinuous by the through holes 50a, 50b are provided to reduce the fastening force, the elastic member 35e which is not discontinuous by the through holes 50 and is adjacent to both the elastic members 35a, 35b in the longitudinal direction is provided, so that the fastening force of the diaper 1 can be secured, and the risk of the diaper 1 slipping off or the like when being worn can be reduced.
Further, in the present embodiment, the through-hole 50a and the through-hole 50c at least partially overlap in the lateral direction, and the distance L1 between the through-hole 50a and the through-hole 50c in the longitudinal direction is longer than the length (L2) of both the through-hole 50a and the through-hole 50 c. This can reduce the risk of tearing around the through- holes 50a and 50c even when the diaper 1 is applied with a force in the up-down direction (e.g., when the diaper 1 is put on).
Note that the effectiveness of the diaper 1 is explained using the abdomen-side exterior member 30, however, the same applies to the back-side exterior member 40.
In other embodiments, the invention is not limited to the specific embodiments described
The above embodiments of the present invention are only for convenience in understanding the present invention and should not be construed as limiting the present invention in any way. The present invention may be variously changed or modified without departing from the gist thereof and includes equivalents thereof. For example, the modifications shown below are possible.
In the above embodiment, the through-hole 50 is formed in both the front-side exterior member 30 and the back-side exterior member 40, but the present invention is not limited thereto. The through-hole 50 may be formed in either of the front-side exterior member 30 and the back-side exterior member 40. However, the breathability of the diaper 1 can be further enhanced by forming the through-holes 50 in both the abdominal-side exterior member 30 and the back-side exterior member 40.
In the above embodiment, the sheet members 34, 44 are provided on the skin side of the front-side exterior member 30 and the back-side exterior member 40, respectively, but the present invention is not limited thereto. The sheet members 34, 44 may be provided on the front-side exterior member 30 or the back-side exterior member 40, and neither the front-side exterior member 30 nor the back-side exterior member 40 may be provided with a sheet member.
In the above embodiment, the elastic members 35 adjacent to each other in the longitudinal direction are arranged at substantially equal intervals, but not limited thereto. The elastic members 35 can be arranged at given intervals in the longitudinal direction, and the elastic members 35 can be arranged at different intervals.
Further, fig. 11 is a plan view showing the diaper 100 according to another embodiment when viewed from the skin side. As shown in fig. 11, the through-hole 50 may be provided only on the lower side (30c, 40c) where sweat is likely to occur, and thus the through-hole 50 may be provided along the groin of the wearer. As shown in fig. 11, the through-holes 50 may be arranged substantially in the same manner between the front-side exterior member 30 and the back-side exterior member 40. The configuration of the through-hole 50 may be appropriately changed.
The diaper 1 according to the above embodiment is not limited to this, and may be a diaper with an infant as a wearer. Further, the above embodiment describes the so-called three-piece type disposable diaper 1 as an example of the absorbent article, but is not limited thereto. For example, a two-piece disposable diaper or an unfolded disposable diaper may be employed, in which: the two-piece disposable diaper includes a first sheet which is an exterior sheet having a stomach-side portion, a crotch portion, and a back-side portion, and a second sheet which is an absorbent main body to be fixed to a skin side of the exterior sheet.
Description of the reference numerals
1. 100 diapers (absorbent articles), 1HB waist opening, 1HL leg openings,
10, 10 absorbent main body, 10e lateral ends,
11 absorbent body, 11ta, 11tb upper end,
13 surface sheet member, 15 surface sheet member,
30 ventral outer sheathing member (ventral portion), 30c portion, 30e end portion, 30s region,
30et ventral upper end, 30se ventral outer member side edge,
31 a skin side sheet, 32 a non-skin side sheet, 32f a folded-back portion,
34 pieces of the components are arranged on the upper surface of the frame,
35 an elastic member for the elastic member to be inserted into the body,
35a, 35b, 35c,
35h elastic member, 35i elastic member
35t upper elastic member, 35m continuous elastic member (lower elastic member),
a 35 s-side elastic member (lower elastic member), a 35 u-lowermost elastic member,
40 back side outer covering member (back side portion), 40c portion, 40e end portion, 40s region,
40et back side upper end, 40se back side exterior member side edge portion,
41 skin side sheet, 42 non-skin side sheet, 42f fold-back portion,
44 of the sheet members are arranged in a row,
45 a resilient member for providing a resilient force to the spring,
45t upper elastic member, 45m continuous elastic member (lower elastic member),
a 45 f-side elastic member (lower elastic member), a 45 u-lowermost elastic member,
50 of the through holes are arranged in the through holes,
a 50a through hole (first through hole), a 50b through hole (second through hole),
50c through-holes (third through-holes), 50d through-holes, 50e through-holes, 50f through-holes,
300 belt-shaped ventral outer covering member (ventral belt-shaped member), 310 belt-shaped skin side sheet, 320 belt-shaped non-skin side sheet,
350 of a continuous elastic member, and,
400 belt-shaped back side exterior member (back side belt-shaped member), 410 belt-shaped skin side sheet, 420 belt-shaped non-skin side sheet,
450 of a continuous elastic member, and a continuous elastic member,
500 a through-hole is formed in the device,
the anvil roll, 510, the anvil block, 511,
a cutting roll of 520, a cutting block of 521,
530 auxiliary transport rollers, 540 elastic member cutting rollers,
the central part of the C10 is provided with a central hole,
c center position (through hole), et upper end, eb lower end, el left end, er right end,
s seam

Claims (11)

1. A method of manufacturing an absorbent article having a longitudinal direction and a transverse direction orthogonal to each other, the absorbent article including a ventral portion for being disposed on a ventral side of a wearer, a dorsal portion for being disposed on a dorsal side of the wearer, and a through-hole penetrating from a skin side to a non-skin side, the method comprising:
an elastic member mounting step of, in a case where a ventral belt-like member including a plurality of ventral portions continuous in the transverse direction and a dorsal belt-like member including a plurality of dorsal portions continuous in the transverse direction are conveyed in the transverse direction, bonding the elastic member in a state of being stretched in the transverse direction to the ventral belt-like member and the dorsal belt-like member; and
a through-hole forming step of forming the through-hole by cutting at least one of the abdominal-side belt-shaped member and the back-side belt-shaped member, each of which is attached with the elastic member, with a cutter so as to form a slit that penetrates the skin side and the non-skin side in a thickness direction and cutting the elastic member,
a position of one end of the elastic member in the lateral direction of the through-hole and
a position of the elastic member at the other end of the through hole in the lateral direction
Are different from each other in the longitudinal direction,
wherein, in the longitudinal direction, a center position of the through hole and a position of the elastic member overlapping with the through hole in the longitudinal direction are different from each other.
2. The method for manufacturing an absorbent article according to claim 1,
the through-hole is formed in such a manner that the elastic member is cut at: this position is offset from the center position of the slit in the longitudinal direction.
3. The method for manufacturing an absorbent article according to claim 1,
forming a first via hole and a second via hole, and
a distance in the longitudinal direction between a center position of the first through hole and a position of the first elastic member overlapping the first through hole in the longitudinal direction is different from
A distance in the longitudinal direction between a center position of the second through hole and a position of a second elastic member overlapping the second through hole in the longitudinal direction.
4. The method for manufacturing an absorbent article according to claim 1,
the through-hole is formed by cutting the elastic member through the slit inclined at a predetermined angle with respect to the longitudinal direction.
5. The method for manufacturing an absorbent article according to claim 1 or 4,
the absorbent article includes an absorbent main body,
one end portion of the absorbent main body is overlapped with and joined to the abdominal portion, and the other end portion of the absorbent main body is overlapped with and joined to the back portion, and
a position of an inner side end in the lateral direction of the through hole is lower than a position of an outer side end in the lateral direction of the through hole in the longitudinal direction.
6. The method for manufacturing an absorbent article according to claim 1,
forming a first via hole and a second via hole, and
a distance in the longitudinal direction between a position at one end of a first elastic member in the transverse direction of the first through-hole, which overlaps the first through-hole in the longitudinal direction, and a position at the other end of the first elastic member in the transverse direction of the first through-hole, is different from that in the longitudinal direction
A distance in the longitudinal direction between a position at one end of a second elastic member in the transverse direction of the second through-hole, which overlaps the second through-hole in the longitudinal direction, and a position at the other end of the second elastic member in the transverse direction of the second through-hole.
7. The method for manufacturing an absorbent article according to claim 1,
in the longitudinal direction, a position of an end of the through hole in the lateral direction overlaps with a position of an end of the elastic member on the through hole side.
8. The method for manufacturing an absorbent article according to claim 1,
forming a first via hole and a second via hole, and
a width of the first via hole in the lateral direction is different from a width of the second via hole in the lateral direction.
9. The method for manufacturing an absorbent article according to claim 1,
forming a first via hole and a second via hole, and
the opening area of the first through hole is different from the opening area of the second through hole.
10. The method for manufacturing an absorbent article according to claim 1,
forming a first via hole and a second via hole, and
the length of the outer edge of the first through hole is equal to the length of the outer edge of the second through hole.
11. The method for manufacturing an absorbent article according to claim 1,
in the through-hole forming process, the through-hole is formed,
conveying the ventral-side belt-like member and the back-side belt-like member in a conveying direction along the transverse direction by rotating the rotary drum around which the ventral-side belt-like member and the back-side belt-like member are wound on an outer circumferential surface of the rotary drum, and
in a case where the abdominal-side belt member and the back-side belt member are conveyed by the rotating drum, at least a portion of the elastic member is cut at a central region in the lateral direction of the absorbent article.
CN201680084279.3A 2016-04-05 2016-04-05 Method for manufacturing absorbent article Active CN108882996B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020164061A1 (en) * 2019-02-14 2020-08-20 The Procter & Gamble Company Pant-type wearable article
JP7458714B2 (en) * 2019-05-20 2024-04-01 ユニ・チャーム株式会社 Absorbent article and method for manufacturing the absorbent article

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002065731A (en) * 2000-08-24 2002-03-05 Uni Charm Corp Disposable diaper
JP4184591B2 (en) * 2000-12-11 2008-11-19 大王製紙株式会社 Method for producing stretchable sheet and disposable diaper using the same
CN101495075A (en) * 2006-07-31 2009-07-29 大王制药株式会社 Pants-type paper diaper
CN102365070A (en) * 2009-04-03 2012-02-29 尤妮佳股份有限公司 Method and device for manufacturing composite sheet for absorptive article
JP2014004115A (en) * 2012-06-22 2014-01-16 Kao Corp Pants type wearing article and method for manufacturing the same
CN203564398U (en) * 2013-10-10 2014-04-30 株式会社瑞光 Device for manufacturing elastic lamination body
JP2015192862A (en) * 2014-03-25 2015-11-05 花王株式会社 absorbent article

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2544909Y2 (en) * 1992-07-10 1997-08-20 ユニ・チャーム株式会社 Disposable diapers
JP4538045B2 (en) * 2006-11-30 2010-09-08 大王製紙株式会社 Pants-shaped diapers
JP6298274B2 (en) * 2013-11-11 2018-03-20 花王株式会社 Pants-type wearing article
JP6292851B2 (en) * 2013-12-04 2018-03-14 花王株式会社 Pants-type absorbent article

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002065731A (en) * 2000-08-24 2002-03-05 Uni Charm Corp Disposable diaper
JP4184591B2 (en) * 2000-12-11 2008-11-19 大王製紙株式会社 Method for producing stretchable sheet and disposable diaper using the same
CN101495075A (en) * 2006-07-31 2009-07-29 大王制药株式会社 Pants-type paper diaper
CN102365070A (en) * 2009-04-03 2012-02-29 尤妮佳股份有限公司 Method and device for manufacturing composite sheet for absorptive article
JP2014004115A (en) * 2012-06-22 2014-01-16 Kao Corp Pants type wearing article and method for manufacturing the same
CN203564398U (en) * 2013-10-10 2014-04-30 株式会社瑞光 Device for manufacturing elastic lamination body
JP2015192862A (en) * 2014-03-25 2015-11-05 花王株式会社 absorbent article

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