JP6195302B2 - Pants-type absorbent article - Google Patents

Pants-type absorbent article Download PDF

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JP6195302B2
JP6195302B2 JP2013237983A JP2013237983A JP6195302B2 JP 6195302 B2 JP6195302 B2 JP 6195302B2 JP 2013237983 A JP2013237983 A JP 2013237983A JP 2013237983 A JP2013237983 A JP 2013237983A JP 6195302 B2 JP6195302 B2 JP 6195302B2
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seal
seal line
continuous
outermost
diaper
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JP2015097579A (en
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高橋　明男
明男 高橋
鈴木　陽一
陽一 鈴木
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Kao Corp
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Kao Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83433—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts the contact angle between said rollers, cylinders or drums and said bands or belts being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1648—Laser beams characterised by the way of heating the interface radiating the edges of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1661—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning repeatedly, e.g. quasi-simultaneous laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1696—Laser beams making use of masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83435—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts said rollers, cylinders or drums being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B29C66/72941—Non woven mats, e.g. felt coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins

Description

本発明は、使い捨ておむつ等のパンツ型吸収性物品に関する。   The present invention relates to a pants-type absorbent article such as a disposable diaper.

パンツ型使い捨ておむつとしては、従来、吸収体を有する吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体とを備え、且つ前身頃における外装体の左右両側縁と後身頃における外装体の左右両側縁とが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているものが汎用されている。このようなパンツ型使い捨ておむつは、サイドシール部を破りこの部分を切り離して脱がせられるようになっている。   Conventionally, the pants-type disposable diaper includes an absorbent main body having an absorbent body and an exterior body that is disposed on the non-skin-facing surface side of the absorbent main body and fixes the absorbent main body, and the front body In general, a pair of side seal portions, a waist opening portion, and a pair of leg openings are formed by joining the left and right side edges of the exterior body to the left and right side edges of the exterior body in the back body. Such a pants-type disposable diaper can be removed by breaking the side seal portion and separating this portion.

特許文献１，２には、一対のサイドシール部それぞれに、複数個のシール部が形成されているパンツ型使い捨ておむつが記載されている。特許文献１に記載のおむつの備える各サイドシール部は、第１シール部と、該第１シール部の内側に配され、縦方向へ間欠的に並ぶ第２シール部とを有している。このような複数個のシール部を有するサイドシール部を備えているので、特許文献１に記載の使い捨ておむつは、サイドシール部を破る際の引き裂き線が横方向へ走ったとしても、それが外縁に達してしまうことを防ぐことができ、両側部を縦方向へ円滑に引き裂くことができる。   Patent Documents 1 and 2 describe a pants-type disposable diaper in which a plurality of seal portions are formed in each of a pair of side seal portions. Each side seal part with which the diaper described in Patent Literature 1 is provided has a first seal part and a second seal part arranged inside the first seal part and arranged intermittently in the vertical direction. Since the side seal part which has such a some seal part is provided, even if the tear line at the time of breaking a side seal part runs in the horizontal direction, the disposable diaper of patent document 1 is the outer edge. Can be prevented, and both sides can be smoothly torn in the vertical direction.

また、特許文献２に記載のおむつの備える各サイドシール部は、第１シール部と、該第１シール部の横方向内側に第２シール部とを備えており、背側腰回り部と腹側腰回り部とを第１シール部及び第２シール部により接合して、第２シール部に指掛け部を形成している。このような指掛け部を有するサイドシール部を備えているので、特許文献２に記載の使い捨ておむつは、着用する際に、指掛け部に指を引っ掛けることができ、着用が容易になる。   Moreover, each side seal part with which the diaper described in Patent Document 2 is provided includes a first seal part and a second seal part on the inner side in the lateral direction of the first seal part. The waist portion is joined by the first seal portion and the second seal portion to form a finger hook portion on the second seal portion. Since the side seal part which has such a finger hook part is provided, when wearing the disposable diaper of patent document 2, a finger | toe can be hooked on a finger hook part and wear becomes easy.

特開２００２−２７２７８５号公報JP 2002-272785 A 特開２００８−２１２４８５号公報JP 2008-212485 A

ところで、パンツ型使い捨ておむつは、予めサイズが数種類に限定されており、各個人差による微妙なサイズの差は、伸縮性を有する外装体を用いて適応させていた。しかし、外装体の伸縮範囲で、各個人差による微妙なサイズに適応させるには難しい場合があった。   By the way, the size of the pants-type disposable diaper is limited to several types in advance, and a subtle difference in size due to individual differences has been adapted using an exterior body having elasticity. However, there are cases where it is difficult to adapt to subtle sizes due to individual differences in the range of expansion and contraction of the exterior body.

特許文献１，２には、各サイドシール部を構成する複数個のシール部を用いて着用者の個人差によるサイズの違いに適応させることに関して、何ら記載されていない。   Patent Documents 1 and 2 do not describe anything about adapting to a difference in size due to individual differences of wearers using a plurality of seal portions constituting each side seal portion.

したがって本発明の課題は、前述した従来技術が有する欠点を解消し得るパンツ型吸収性物品を提供することにある。   Therefore, the subject of this invention is providing the underpants type absorbent article which can eliminate the fault which the prior art mentioned above has.

本発明は、外装体と、外装体の内面側に固定されている吸収性本体とを備え、外装体は、着用者の腹側に配される腹側領域と、背側に配される背側領域とを有し、腹側領域の両側縁部と背側領域の両側縁部とが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型着用吸収性物品であって、前記一対のサイドシール部の内の少なくとも一方は、互いに離間して縦方向に延びる複数本のシール線を有しており、前記複数本のシール線の内、最も横方向外方側に位置する最外方シール線のシール強度が最も強く、前記最外方シール線以外の他の前記シール線は、前記ウエスト開口部から前記レッグ開口部に亘って縦方向に連続して延びる連続シール線である、パンツ型着用吸収性物品を提供するものである。   The present invention includes an exterior body and an absorbent main body fixed to the inner surface side of the exterior body, and the exterior body includes a ventral region disposed on the wearer's stomach side and a back disposed on the back side. Pants-type wear having a side region and a pair of side seals, a waist opening and a pair of leg openings formed by joining both side edges of the ventral region and both side edges of the back region In the absorbent article, at least one of the pair of side seal portions has a plurality of seal lines that are separated from each other and extend in the vertical direction, and the most horizontal of the plurality of seal lines. The seal strength of the outermost seal line located on the outer side in the direction is the strongest, and the other seal lines other than the outermost seal line continue in the vertical direction from the waist opening to the leg opening. Also providing a pants-type wearing absorbent article that is a continuous seal line extending It is.

本発明によれば、着用者の個人差によるサイズの違いに適応させることができ、着用感が向上する。   ADVANTAGE OF THE INVENTION According to this invention, it can adapt to the difference in size by a wearer's individual difference, and a feeling of wear improves.

図１は、本発明のパンツ型吸収性物品の第１実施形態であるパンツ型使い捨ておむつを模式的に示す斜視図である。FIG. 1 is a perspective view schematically showing a pants-type disposable diaper that is a first embodiment of a pants-type absorbent article of the present invention. 図２は、図１に示すおむつの展開かつ伸長状態を模式的に示す平面図である。FIG. 2 is a plan view schematically showing an unfolded and extended state of the diaper shown in FIG. 図３は、図１のＩＩＩ−ＩＩＩ線断面を模式的に示す断面図である。3 is a cross-sectional view schematically showing a cross section taken along line III-III in FIG. 図４は、本発明のパンツ型吸収性物品の第２実施形態であるパンツ型使い捨ておむつを模式的に示す斜視図（図１相当図）である。FIG. 4 is a perspective view (corresponding to FIG. 1) schematically showing a pants-type disposable diaper that is a second embodiment of the pants-type absorbent article of the present invention. 図５は、本発明のパンツ型吸収性物品の第３実施形態であるパンツ型使い捨ておむつを模式的に示す斜視図（図１相当図）である。FIG. 5 is a perspective view (corresponding to FIG. 1) schematically showing a pant-type disposable diaper that is a third embodiment of the pant-type absorbent article of the present invention. 図６は、本発明のパンツ型吸収性物品の第４実施形態であるパンツ型使い捨ておむつを模式的に示す斜視図（図１相当図）である。FIG. 6 is a perspective view (corresponding to FIG. 1) schematically showing a pant-type disposable diaper that is a fourth embodiment of the pant-type absorbent article of the present invention. 図７は、図１に示すおむつの製造における、おむつ連続体の製造工程を模式的に示す斜視図である。FIG. 7 is a perspective view schematically showing a manufacturing process of a diaper continuous body in the manufacture of the diaper shown in FIG. 図８は、本発明のパンツ型吸収性物品の製造に好ましく用いられるレーザー式接合装置及びそれを用いておむつ連続体を溶断する様子を示す斜視図である。FIG. 8: is a perspective view which shows a mode that a diaper continuous body is fuse | melted using the laser-type joining apparatus preferably used for manufacture of the underpants type absorbent article of this invention. 図９（ａ）ないし図９（ｃ）は、それぞれ、図８に示すレーザー式接合装置を用いておむつ連続体（帯状の外装体）のサイドシール部における連続シール線を形成する様子を説明する説明図である。9 (a) to 9 (c) each illustrate how a continuous seal line is formed in the side seal portion of a diaper continuous body (band-shaped exterior body) using the laser-type bonding apparatus shown in FIG. It is explanatory drawing.

以下、本発明をその好ましい実施形態に基づき図面を参照しながら説明する。本発明のパンツ型着用物品の第１実施形態であるパンツ型使い捨ておむつ１Ａは、図１，図２に示すとおり、外装体３と、外装体３の内面側に固定されている吸収性本体２とを備えている。外装体３は、おむつ１Ａの外面を形成し、着用者の腹側に配される腹側領域Ａと、背側に配される背側領域Ｂとを有している。おむつ１Ａにおいては、腹側領域Ａにおける外装体３の両側縁部Ａ１，Ａ１と背側領域Ｂにおける外装体３の両側縁部Ｂ１，Ｂ１とが接合されて一対のサイドシール部４，４、ウエスト開口部８及び一対のレッグ開口部９，９が形成されている。   Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. As shown in FIGS. 1 and 2, a pant-type disposable diaper 1 </ b> A that is a first embodiment of a pant-type wearing article of the present invention is an exterior body 3 and an absorbent main body 2 fixed to the inner surface side of the exterior body 3. And. The exterior body 3 forms the outer surface of the diaper 1 </ b> A, and includes an abdominal region A disposed on the wearer's ventral side and a dorsal region B disposed on the dorsal side. In the diaper 1A, the side edges A1, A1 of the outer package 3 in the ventral region A and the side edges B1, B1 of the outer package 3 in the back region B are joined to form a pair of side seal portions 4, 4, A waist opening 8 and a pair of leg openings 9, 9 are formed.

おむつ１Ａは、図２に示すとおり、展開かつ伸長状態の平面視において、着用者の前後方向に相当する縦方向Ｙとこれに直交する横方向Ｘとを有している。おむつ１Ａは、着用時に着用者の股下に配される股下領域Ｃ並びにその縦方向Ｙの前後に位置する腹側領域Ａ及び背側領域Ｂに区分することができる。股下領域Ｃにおける外装体３は、その縦方向Ｙに沿う左右両側縁部にレッグ開口部９，９形成用の凹欠部が形成されている。おむつ１Ａは、図３に示すとおり、おむつ１Ａを縦方向Ｙに二分する仮想中心線ＣＬ１を境にして、前身頃Ｆと後身頃Ｒとに区分することができる。   As shown in FIG. 2, the diaper 1 </ b> A has a longitudinal direction Y corresponding to the wearer's front-rear direction and a lateral direction X orthogonal to the wearer's front-rear direction in a developed and extended plan view. The diaper 1A can be divided into a crotch region C disposed in the crotch of the wearer at the time of wearing, and a ventral region A and a back region B that are positioned before and after the longitudinal direction Y. The exterior body 3 in the crotch region C has recesses for forming leg openings 9 and 9 at both left and right edges along the longitudinal direction Y. As shown in FIG. 3, the diaper 1A can be divided into a front body F and a back body R, with a virtual center line CL1 that bisects the diaper 1A in the longitudinal direction Y as a boundary.

本明細書において、肌対向面は、パンツ型吸収性物品又はその構成部材（例えば吸収性本体）における、着用時に着用者の肌側に向けられる面であり、非肌対向面は、パンツ型吸収性物品又はその構成部材における、着用時に着用者の肌側とは反対側（着衣側）に向けられる面である。おむつ１Ａにおいて、縦方向Ｙは、おむつ１Ａ又はその構成部材である吸収性本体２の長辺に沿う方向（縦方向）に一致し、横方向Ｘは、使い捨ておむつ又はその構成部材である吸収性本体２の幅方向に一致する。
また、おむつ１Ａは、縦方向Ｙに延びる縦中心線ＣＬ２に対して左右対称形をしている。従って、以下の説明では、左右対称な部分については、主に、一方のみについて説明する。 In the present specification, the skin facing surface is a surface of the pant-type absorbent article or a component thereof (for example, an absorbent main body) that is directed to the wearer's skin when worn, and the non-skin facing surface is a pants-type absorption. It is a surface which is directed to the side opposite to the wearer's skin side (clothing side) in the wearable article or its constituent members. In the diaper 1A, the vertical direction Y coincides with the direction (longitudinal direction) along the long side of the absorbent main body 2 that is the diaper 1A or its constituent member, and the horizontal direction X is the disposable diaper or the absorbent member thereof. It coincides with the width direction of the main body 2.
The diaper 1 </ b> A has a symmetrical shape with respect to the vertical center line CL <b> 2 extending in the vertical direction Y. Accordingly, in the following description, only one of the symmetrical parts will be mainly described.

吸収性本体２は、図２に示すとおり、一方向（縦方向Ｙ）が相対的に長い縦長の形状を有している。吸収性本体２は、肌対向面を形成する表面シート２ａと、非肌対向面を形成する裏面シート２ｂと、これら両シート間に介在配置された液保持性の吸収体２ｃとを具備する。吸収体２ｃは、縦方向Ｙと同方向に長い形状を有している。吸収性本体２は、その縦方向を、展開かつ伸長状態におけるおむつ１Ａの縦方向Ｙに一致させて、外装体３の中央部に公知の接合手段（接着剤等）によって接合されている。展開かつ伸長状態とは、図２に示すように、サイドシール部４を引き剥がして、おむつ１Ａを展開状態とし、その展開状態のおむつ１Ａを、各部の弾性部材を伸長させて、設計寸法（弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ）となるまで広げた状態を言う。   As shown in FIG. 2, the absorbent main body 2 has a vertically long shape in which one direction (vertical direction Y) is relatively long. The absorptive main body 2 includes a top sheet 2a that forms a skin facing surface, a back sheet 2b that forms a non-skin facing surface, and a liquid-retaining absorbent 2c that is interposed between the two sheets. The absorber 2c has a shape that is long in the same direction as the longitudinal direction Y. The absorptive main body 2 is joined to a central portion of the outer package 3 by a known joining means (adhesive or the like) with its longitudinal direction coinciding with the longitudinal direction Y of the diaper 1A in the unfolded and extended state. As shown in FIG. 2, the unfolded and stretched state means that the side seal portion 4 is peeled off to bring the diaper 1A into the unfolded state. It means a state in which it is expanded until it becomes the same size as when it is expanded in a flat shape with no influence of the elastic member removed.

外装体３は、図２に示すとおり、おむつ１Ａの外面（外装体３の非肌対向面）を形成する外層シート３１と、該外層シート３１の内面側に配され、おむつ１Ａの内面（外装体３の肌対向面）を形成する内層シート３２と、両シート３１，３２間に固定された複数本の糸状又は帯状の弾性部材５とを含んで構成されている。両シート３１，３２は、それぞれ、腹側領域Ａから背側領域Ｂにまで亘って連続する一枚のシートからなる。両シート３１，３２間は、所定部位において接着剤又はヒートシール等（図示せず）の接合手段によって接合されている。弾性部材５は、両シート３１，３２間に伸長状態で配され、かつおむつ１Ａの横方向Ｘに亘って延びている。外装体３は、吸収性本体２の縦方向Ｙの前後の端部から前後方向に延出している。   As shown in FIG. 2, the outer package 3 is arranged on the outer layer sheet 31 that forms the outer surface of the diaper 1 </ b> A (the non-skin-facing surface of the outer package 3) and the inner surface side of the outer layer sheet 31. The inner layer sheet 32 that forms the skin facing surface of the body 3 and a plurality of thread-like or belt-like elastic members 5 fixed between the sheets 31 and 32 are configured. Both sheets 31, 32 are each composed of a single sheet extending from the ventral region A to the dorsal region B. The sheets 31 and 32 are joined to each other by a joining means such as an adhesive or heat seal (not shown) at a predetermined portion. The elastic member 5 is arranged in an extended state between the two sheets 31 and 32 and extends in the lateral direction X of the diaper 1A. The exterior body 3 extends in the front-rear direction from the front and rear ends in the longitudinal direction Y of the absorbent main body 2.

弾性部材５のうち、ウエスト開口部８の近傍に配置されたウエスト部弾性部材５ａの伸縮性によって、外装体３には、ウエスト部弾性領域が形成される。また、レッグ開口部９の近傍に配置されたレッグ部弾性部材５ｃの伸縮性によって、外装体３には、レッグ部弾性領域が形成される。更にウエスト部弾性部材５ａの配された領域とレッグ部弾性部材５ｃの配された領域との間の領域には、胴周り部弾性部材５ｂが配置されており、胴周り部弾性部材５ｂの伸縮性によって、胴周り部弾性領域が形成される。ウエスト部弾性領域及び胴周り部弾性領域は、外装体３の横方向Ｘに沿って伸縮性を発現している。レッグ部弾性領域は、レッグホールの曲線形状に沿って伸縮性を発現している。   Of the elastic member 5, a waist elastic region is formed in the exterior body 3 by the stretchability of the waist elastic member 5 a disposed in the vicinity of the waist opening 8. Moreover, a leg part elastic region is formed in the exterior body 3 by the stretchability of the leg part elastic member 5 c disposed in the vicinity of the leg opening 9. Further, a waistline elastic member 5b is disposed in a region between the area where the waist elastic member 5a is disposed and the area where the leg elastic member 5c is disposed. Depending on the nature, a waistline elastic region is formed. The waist elastic region and the waist elastic region express stretchability along the lateral direction X of the exterior body 3. The leg elastic region expresses stretchability along the curved shape of the leg hole.

本実施形態においては、胴周り部弾性部材５ｂは、図１に示すように、吸収性本体２と重なる部分に、該弾性部材５ｂの伸縮性の発現が抑制された非伸縮部を有しており、それによって部分的に伸縮性の発現が抑えられている。胴周り部弾性部材５ｂにおいては、非伸縮部は伸縮しないが、非伸縮部以外の他の部分（吸収性本体２の横方向Ｘの外方に位置する部分）は伸縮する。従って、胴周り部弾性領域においては、吸収性本体２の配置領域を除く、縦方向Ｙに沿う左右両側部に、伸縮性が発現している。このように、弾性部材５ｂが吸収性本体２と重なる部分に非伸縮部を有していることにより、吸収性本体２に縦皺を生じさせることなく吸収性本体２の縦方向Ｙの端部を着用者の身体に沿わせることが可能となり、それによって、漏れが効果的に防止されると共に、吸収性本体２に生じた皺の頂部が肌に当たることに起因する跡付き等の不都合が効果的に防止される。非伸縮部の形成方法としては、この種の使い捨ておむつにおいて通常用いられている方法を特に制限無く用いることができ、例えば、弾性部材５ｂを細かく分断して伸縮しないようにする方法、あるいは接着剤等を用いた接合によって弾性部材５ｂが伸縮しないようにする方法等が挙げられる。   In the present embodiment, as shown in FIG. 1, the waistline elastic member 5 b has a non-stretchable portion in which the stretchability of the elastic member 5 b is suppressed at a portion overlapping the absorbent main body 2. Thus, the expression of stretchability is partially suppressed. In the waistline elastic member 5b, the non-stretchable portion does not stretch, but other portions other than the non-stretchable portion (portions located outside the lateral direction X of the absorbent main body 2) stretch. Accordingly, in the waistline elastic region, stretchability is manifested in the left and right side portions along the longitudinal direction Y excluding the region where the absorbent main body 2 is disposed. Thus, since the elastic member 5b has the non-stretchable part in the part which overlaps with the absorptive main body 2, the edge part of the vertical direction Y of the absorptive main body 2 does not produce a vertical wrinkle in the absorptive main body 2. Can be made to follow the wearer's body, thereby effectively preventing leakage, and inconveniences such as marks caused by the top of the heel generated in the absorbent main body 2 hitting the skin are effective. Is prevented. As a method for forming the non-stretchable portion, a method usually used in this type of disposable diaper can be used without any particular limitation. For example, a method of finely dividing the elastic member 5b so as not to expand or contract, or an adhesive For example, a method of preventing the elastic member 5b from expanding and contracting by bonding using the like.

おむつ１Ａにおける一対のサイドシール部４，４は、前身頃Ｆ（腹側領域Ａ）における外装体３の縦方向Ｙに沿う左右両側縁部Ａ１，Ａ１と後身頃Ｒ（背側領域Ｂ）における外装体３の縦方向Ｙに沿う左右両側縁部Ｂ１，Ｂ１とが、合掌状に重なり合った状態で接合されて形成されている。一対のサイドシール部４，４は、それぞれ、互いに離間して縦方向Ｙに延びる複数本のシール線を有しており、本実施形態のおむつ１Ａにおいては、２本のシール線４１，４２を有している。尚、シール線の数は、２本以上、４本以下であることが好ましい。シール線４１，４２は、腹側領域Ａの外装体３と背側領域Ｂの外装体３とを重ね合わせ、重ね合わされた状態の外装体３の縁部Ａ１，Ｂ１どうしをシールする、ウエスト開口部８からレッグ開口部９に向かって縦方向Ｙに延びる接合線である。   The pair of side seal portions 4 and 4 in the diaper 1A are provided on the left and right side edges A1 and A1 along the longitudinal direction Y of the exterior body 3 in the front body F (ventral region A) and the back body R (back region B). The left and right side edges B1 and B1 along the longitudinal direction Y of the exterior body 3 are joined and formed in a state of overlapping in a palm shape. Each of the pair of side seal portions 4 and 4 has a plurality of seal lines that are separated from each other and extend in the longitudinal direction Y. In the diaper 1A of the present embodiment, the two seal lines 41 and 42 are connected to each other. Have. The number of seal lines is preferably 2 or more and 4 or less. Seal lines 41 and 42 are waist openings that overlap the exterior body 3 in the ventral region A and the exterior body 3 in the back region B, and seal the edges A1 and B1 of the exterior body 3 in a superposed state. This is a joining line extending in the longitudinal direction Y from the portion 8 toward the leg opening 9.

本実施形態において、各サイドシール部４の複数本のシール線の内、最も横方向Ｘ外方側に位置する（縦方向Ｙに延びる縦中心線ＣＬ２から最も離れている）最外方シール線とは、図１，図２に示すように、シール線４１が該当する。従って、最外方シール線４１とシール線４１とは同じ線を示している。   In the present embodiment, among the plurality of seal lines of each side seal portion 4, the outermost seal line that is located on the outermost side in the lateral direction X (the furthest away from the longitudinal center line CL2 extending in the longitudinal direction Y). As shown in FIGS. 1 and 2, the seal line 41 corresponds. Therefore, the outermost seal line 41 and the seal line 41 indicate the same line.

最外方シール線４１は、おむつ１Ａにおいては、図２，図３に示すように、重ね合わされた状態の外装体３の縁部Ａ１，Ｂ１における横方向Ｘ外側縁に沿って、該縁部Ａ１，Ｂ１どうしが一体的に加熱圧搾化された圧搾部と圧搾化されていない非圧搾部とが交互に配されて、縦方向Ｙに間欠的に延びている。各圧搾部は、エンボス加工、ヒートエンボス加工、或いは超音波エンボス加工を施すことにより形成されている。各圧搾部は、同じ幅に形成されている。各サイドシール部４の複数本のシール線の内、最も横方向Ｘ外方側に位置する最外方シール線４１のシール強度が残りの連続シール線に比べて最も強く形成されている。   In the diaper 1A, the outermost seal line 41 is formed along the lateral X outer edge at the edges A1 and B1 of the outer package 3 in a superimposed state, as shown in FIGS. The compression parts in which A1 and B1 are integrally heated and compressed and the non-squeezed parts that are not compressed are alternately arranged and intermittently extend in the longitudinal direction Y. Each pressing portion is formed by embossing, heat embossing, or ultrasonic embossing. Each pressing part is formed in the same width. Of the plurality of seal lines of each side seal portion 4, the seal strength of the outermost seal line 41 located on the outermost side in the lateral direction X is formed to be stronger than the remaining continuous seal lines.

最外方シール線４１は、おむつ１Ａにおいては、腹側領域Ａ側の外装体３及び背側領域Ｂ側の外装体３を重ね合わせた状態で、両外層体３，３を間欠的に加熱圧搾して形成された面状のヒートシール部から形成されている。このように、最外方シール線４１が面状のヒートシール部から形成されているので、幅広のシール部分を形成することでき、このことにより最外方に位置するシール線であることを明確にすることで、サイズ調整の時に一緒に剥がすのを防止できる。面状のヒートシール部の形成方法については後述する。   In the diaper 1 </ b> A, the outermost seal line 41 intermittently heats the outer layer bodies 3 and 3 with the outer body 3 on the abdominal region A side and the outer body 3 on the back region B side being overlapped. It is formed from the planar heat seal part formed by pressing. Thus, since the outermost seal line 41 is formed from a planar heat seal part, it is possible to form a wide seal part, thereby clearly indicating that the seal line is located on the outermost side. By doing so, it can be prevented to peel off at the time of size adjustment. A method for forming the planar heat seal portion will be described later.

最外方シール線４１（シール線４１）以外の他のシール線４２は、図２，図３に示すように、ウエスト開口部８からレッグ開口部９に亘って縦方向Ｙに連続して延びる連続シール線である。このように、連続シール線４２とシール線４２とは同じ線を示している。連続シール線４２は、最外方シール線４１よりも横方向Ｘ内側（中心線ＣＬ２寄り）に配されており、おむつ１Ａにおいては、最外方シール線４１と吸収性本体２との間に位置して、重ね合わされた状態の外装体３の縁部Ａ１，Ｂ１どうしをシールする、ウエスト開口部８からレッグ開口部９に向かって縦方向Ｙに連続的に延びる接合線である。   The seal lines 42 other than the outermost seal line 41 (seal line 41) continuously extend in the longitudinal direction Y from the waist opening 8 to the leg opening 9, as shown in FIGS. It is a continuous seal line. Thus, the continuous seal line 42 and the seal line 42 indicate the same line. The continuous seal line 42 is arranged on the inner side in the lateral direction X (close to the center line CL2) than the outermost seal line 41, and in the diaper 1A, between the outermost seal line 41 and the absorbent main body 2. It is a joint line that extends and continuously extends in the longitudinal direction Y from the waist opening 8 toward the leg opening 9 and seals the edges A1 and B1 of the outer package 3 in an overlapped state.

連続シール線４２は、シール強度の強い部分４２ｓと弱い部分４２ｗとを有しており、連続シール線４２におけるウエスト開口部８側の端部及びレッグ開口部９側の端部それぞれが、シール強度の弱い部分４２ｗとなっている。そして、ウエスト開口部８側の端部（シール強度の弱い部分４２ｗ）とレッグ開口部９側の端部（シール強度の弱い部分４２ｗ）との間の部分が、シール強度の強い部分４２ｓとなっている。即ち、おむつ１Ａの連続シール線４２は、縦方向Ｘに、シール強度の弱い部分４２ｗ、シール強度の強い部分４２ｓ、及びシール強度の弱い部分４２ｗから形成されている。   The continuous seal line 42 has a strong portion 42s and a weak portion 42w, and the end portion on the waist opening 8 side and the end portion on the leg opening portion 9 side of the continuous seal line 42 have seal strength. This is a weak portion 42w. A portion between the end portion on the side of the waist opening 8 (the portion 42 w having low sealing strength) and the end portion on the side of the leg opening 9 (portion 42 w having low sealing strength) is a portion 42 s having high sealing strength. ing. That is, the continuous seal line 42 of the diaper 1A is formed in the longitudinal direction X from a portion 42w having a low seal strength, a portion 42s having a high seal strength, and a portion 42w having a low seal strength.

連続シール線４２におけるシール強度の強い部分４２ｓは、その幅（Ｗ１）が、連続シール線４２におけるシール強度の弱い部分４２ｗの幅（Ｗ２）よりも広くなっており、シール強度の強弱を明確にする観点から、シール強度の強い部分４２ｓの幅（Ｗ１）は、シール強度の弱い部分４２ｗの幅（Ｗ２）の１.５倍以上５０倍以下であることが好ましく、５倍以上３０倍以下であることが更に好ましい。具体的には、シール強度の強い部分４２ｓの幅（Ｗ１）は、２ｍｍ以上８ｍｍ以下であることが好ましく、３ｍｍ以上５ｍｍ以下であることが更に好ましい。また、シール強度の弱い部分４２ｗの幅（Ｗ２）は、０．１ｍｍ以上３ｍｍ以下であることが好ましく、０．５ｍｍ以上２ｍｍ以下であることが更に好ましい。   The width (W1) of the portion 42s where the seal strength is strong in the continuous seal line 42 is wider than the width (W2) of the portion 42w where the seal strength is weak in the continuous seal line 42, and the strength of the seal strength is clearly defined. In view of the above, the width (W1) of the portion 42s with high sealing strength is preferably 1.5 times or more and 50 times or less than the width (W2) of the portion 42w with low sealing strength. More preferably it is. Specifically, the width (W1) of the portion 42s having high sealing strength is preferably 2 mm or more and 8 mm or less, and more preferably 3 mm or more and 5 mm or less. In addition, the width (W2) of the portion 42w having a weak seal strength is preferably 0.1 mm or more and 3 mm or less, and more preferably 0.5 mm or more and 2 mm or less.

上述したように、最外方シール線４１のシール強度は、残りのシール線である連続シール線４２に比べて強く形成されている。即ち、連続シール線４２の強度は、最外方シール線４１のシール強度よりも弱く形成されている。その為、おむつ１Ａにおいては、連続シール線４２は、その幅が、最外方シール線４１における最も幅狭の部分の幅（Ｗ３）よりも狭くなっている。即ち、最外方シール線４１は、同じ幅（Ｗ３）に形成されているので、連続シール線４２におけるシール強度の強い部分４２ｓの幅（Ｗ１）が、最外方シール線４１の幅（Ｗ３）よりも狭くなっている。言い換えれば、最外方シール線４１の幅（Ｗ３）が、連続シール線４２の幅（シール強度の強い部分４２ｓの幅（Ｗ１））よりも広くなっている。シール強度の強弱を明確にする観点から、最外方シール線４１の幅（Ｗ３）は、連続シール線４２におけるシール強度の強い部分４２ｓの幅（Ｗ１）の１.１倍以上５倍以下であることが好ましく、１．２倍以上３倍以下であることが更に好ましい。具体的には、最外方シール線４１の幅（Ｗ３）は、３ｍｍ以上２０ｍｍ以下であることが好ましく、４ｍｍ以上１０ｍｍ以下であることが更に好ましい。   As described above, the seal strength of the outermost seal line 41 is formed stronger than the continuous seal line 42 which is the remaining seal line. That is, the strength of the continuous seal line 42 is formed to be weaker than the seal strength of the outermost seal line 41. Therefore, in the diaper 1A, the width of the continuous seal line 42 is narrower than the width (W3) of the narrowest portion of the outermost seal line 41. That is, since the outermost seal line 41 is formed to have the same width (W3), the width (W1) of the portion 42s having a strong seal strength in the continuous seal line 42 is equal to the width (W3) of the outermost seal line 41. ) Is narrower than. In other words, the width (W3) of the outermost seal line 41 is wider than the width of the continuous seal line 42 (the width (W1) of the portion 42s having high seal strength). From the viewpoint of clarifying the strength of the seal strength, the width (W3) of the outermost seal line 41 is 1.1 times or more and 5 times or less than the width (W1) of the portion 42s having a strong seal strength in the continuous seal line 42. Preferably, it is 1.2 times or more and 3 times or less. Specifically, the width (W3) of the outermost seal line 41 is preferably 3 mm or more and 20 mm or less, and more preferably 4 mm or more and 10 mm or less.

最外方シール線４１を除く残りの連続シール線４２は、おむつ１Ａにおいては、腹側領域Ａ側の外装体３及び背側領域Ｂ側の外装体３を重ね合わせた状態で、縦方向Ｙに沿って両外層体３，３を連続的に溶融接合して形成された線状の融着部（レーザーによるシール部）から形成されている。このように、連続シール線４２が線状の融着部（レーザーによるシール部）から形成されているので、 装着により剥がれ難いが、手で容易に剥がすことが出来る。また、線状の融着部（レーザー光によるシール部）であることから、剥がすときに他の部分が破れたりしにくい。線状の融着部（レーザー光によるシール部）の形成方法については後述する。   In the diaper 1A, the remaining continuous seal line 42 excluding the outermost seal line 41 is in the longitudinal direction Y with the exterior body 3 on the ventral region A side and the exterior body 3 on the back region B side overlapped. The two outer layer bodies 3 and 3 are continuously fused and joined together to form a linear fused part (seal part by laser). Thus, since the continuous seal line 42 is formed from the linear fused part (seal part by a laser), it is hard to peel off by mounting | wearing, but it can peel easily by hand. Moreover, since it is a linear fusion | fusion part (sealed part by a laser beam), when peeling off, it is hard to tear another part. A method for forming the linear fused portion (sealed portion by laser light) will be described later.

尚、最外方シール線４１と残りの連続シール線４２とは、互いに離間しており、最外方シール線４１と連続シール線４２との間は、腹側領域Ａ側の外装体３及び背側領域Ｂ側の外装体３が重ね合わさっただけで、接合されていない非接合状態となっている。最外方シール線４１と残りの連続シール線４２との間隔は、２ｍｍ以上３０ｍｍ以下であることが好ましく、５ｍｍ以上１５ｍｍ以下であることが更に好ましい。   The outermost seal line 41 and the remaining continuous seal line 42 are separated from each other, and between the outermost seal line 41 and the continuous seal line 42, the exterior body 3 on the ventral region A side and The exterior body 3 on the back side region B side is just overlaid, and is not joined yet. The distance between the outermost seal line 41 and the remaining continuous seal line 42 is preferably 2 mm or more and 30 mm or less, and more preferably 5 mm or more and 15 mm or less.

最外方シール線４１のシール強度は、サイズ調整で連続シール線４２を引きはがすときに同時に剥離しない様にする観点から、連続シール線４２のシール強度（シール強度の強い部分４２ｓ）の１.１倍以上５.０倍以下であることが好ましく、１．２倍以上３．０倍以下であることが更に好ましい。具体的には、最外方シール線４１のシール強度は、０．１Ｎ／ｍｍ以上２．０Ｎ／ｍｍ以下であることが好ましく、０．２Ｎ／ｍｍ以上１．０Ｎ／ｍｍ以下であることが更に好ましい。連続シール線４２におけるシール強度の強い部分４２ｓのシール強度は、０．１Ｎ／ｍｍ以上２．０Ｎ／ｍｍ以下であることが好ましく、０．２Ｎ／ｍｍ以上１．０Ｎ／ｍｍ以下であることが更に好ましい。また、連続シール線４２におけるシール強度の弱い部分４２ｗのシール強度は、０．０５Ｎ／ｍｍ以上１．０Ｎ／ｍｍ以下であることが好ましく、０．１Ｎ／ｍｍ以上０．５Ｎ／ｍｍ以下であることが更に好ましい。各シール強度は、以下のようにして測定する。   The seal strength of the outermost seal line 41 is 1. of the seal strength of the continuous seal line 42 (the portion 42s where the seal strength is strong) from the viewpoint of not peeling at the same time when the continuous seal line 42 is peeled off by size adjustment. It is preferably 1 to 5.0 times, and more preferably 1.2 to 3.0 times. Specifically, the seal strength of the outermost seal wire 41 is preferably 0.1 N / mm or more and 2.0 N / mm or less, and preferably 0.2 N / mm or more and 1.0 N / mm or less. Further preferred. The seal strength of the portion 42s having a high seal strength in the continuous seal wire 42 is preferably 0.1 N / mm or more and 2.0 N / mm or less, and preferably 0.2 N / mm or more and 1.0 N / mm or less. Further preferred. Further, the seal strength of the portion 42w having a weak seal strength in the continuous seal wire 42 is preferably 0.05 N / mm or more and 1.0 N / mm or less, and is 0.1 N / mm or more and 0.5 N / mm or less. More preferably. Each seal strength is measured as follows.

＜シール強度の測定方法＞
最外方シール線４１のシール強度を例に説明すると、最外方シール線４１を含むように、おむつの横方向（Ｘ方向）にシール線４１から５０ｍｍ×おむつの縦方向（Ｙ方向）に３０ｍｍの長方形状に、外装体２の腹側領域Ａ及び背側領域Ｂが張り合わされた状態で切断してサンプルシートを得る。得られたサンプルシートの１８０°シール強度を、テンシロン引っ張り試験機（オリエンテック社製、商品名「ＲＴＡ−１００」）を用い常法に従って測定（チャック間距離２０ｍｍ、引張速度３００ｍｍ／ｍｉｎ）し、サンプルＹ方向長さ（ｍｍ）当たりに換算した値をシール線４１のシール強度とする。尚、測定値は、上記サンプルシートを測定した５点平均により算出する。（シール強度（Ｎ／ｍｍ）＝測定値（Ｎ）/サンプルＹ方向長さ（ｍｍ））連続シール線４２におけるシール強度の強い部分４２ｓ及びシール強度の弱い部分４２ｗのシール強度も同様にして測定する。 <Measurement method of seal strength>
The seal strength of the outermost seal line 41 will be described as an example. In order to include the outermost seal line 41, the diaper in the horizontal direction (X direction) is 50 mm from the seal line 41 in the vertical direction (Y direction) of the diaper. A sample sheet is obtained by cutting in a state in which the ventral region A and the dorsal region B of the outer package 2 are pasted into a 30 mm rectangular shape. The 180 ° seal strength of the obtained sample sheet was measured according to a conventional method using a Tensilon tensile tester (product name “RTA-100” manufactured by Orientec Co., Ltd.) (distance between chucks 20 mm, tensile speed 300 mm / min), The value converted per length (mm) in the sample Y direction is defined as the seal strength of the seal wire 41. In addition, a measured value is computed by the 5-point average which measured the said sample sheet. (Seal strength (N / mm) = measured value (N) / length in the sample Y direction (mm)) The seal strength of the portion 42s having a high seal strength and the portion 42w having a low seal strength in the continuous seal wire 42 is also measured. To do.

上述したおむつ１Ａの各部の形成材料について説明する。
吸収性本体２を構成する表面シート２ａ、裏面シート２ｂ及び吸収体２ｃ等としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のもの等を特に制限なく用いることができる。例えば、表面シート２ａとしては、単層又は多層構造の不織布や、開孔フィルム等を用いることができる。裏面シート２ｂとしては、樹脂フィルムや樹脂フィルムと不織布の積層体等を用いることができる。吸収体２ｃとしては、パルプ繊維等の繊維の集合体（不織布であっても良い）からなる吸収性コア又はこれに吸水性ポリマーの粒子を保持させてなる吸収性コアを、ティッシュペーパ等からなるコアラップシートで被覆したものを用いることができる。 The formation material of each part of the diaper 1A mentioned above is demonstrated.
As the top sheet 2a, the back sheet 2b, the absorbent body 2c and the like constituting the absorbent main body 2, various kinds of materials conventionally used for absorbent articles such as disposable diapers can be used without particular limitation. For example, as the surface sheet 2a, a single layer or multilayer nonwoven fabric, a perforated film, or the like can be used. As the back sheet 2b, a resin film, a laminate of a resin film and a nonwoven fabric, or the like can be used. As the absorbent body 2c, an absorbent core made of an aggregate of fibers such as pulp fibers (which may be a nonwoven fabric) or an absorbent core made by holding particles of a water-absorbing polymer on the core is made of tissue paper or the like. Those coated with a core wrap sheet can be used.

外装体３を構成する外層シート３１及び内層シート３２としては、樹脂材を含み、該樹脂材を主成分として形成されている。外装体３（外層シート３１、内層シート３２）の一例として、樹脂材としてポリエチレン、ポリエチレンテレフタレート、ポリプロピレン等の熱融着性の合成樹脂を含み、不織布、フィルム、不織布とフィルムとのラミネートシート等からなるものが挙げられる。不織布としては、エアースルー不織布、ヒートロール不織布、スパンレース不織布、スパンボンド不織布、メルトブローン不織布等が挙げられる。   The outer layer sheet 31 and the inner layer sheet 32 constituting the exterior body 3 include a resin material and are formed using the resin material as a main component. As an example of the outer package 3 (the outer layer sheet 31 and the inner layer sheet 32), the resin material includes a heat-sealable synthetic resin such as polyethylene, polyethylene terephthalate, and polypropylene, and includes a nonwoven fabric, a film, a laminate sheet of a nonwoven fabric and a film, and the like. The thing which becomes. Examples of the nonwoven fabric include air-through nonwoven fabric, heat roll nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric, and melt blown nonwoven fabric.

弾性部材５の形成素材としては、例えば、スチレン−ブタジエン、ブタジエン、イソプレン、ネオプレン等の合成ゴム、天然ゴム、ＥＶＡ、伸縮性ポリオレフィン、ポリウレタン等を挙げることができる。弾性部材の形態としては、断面が矩形、正方形、円形、楕円形又は多角形状等の糸状（糸ゴム等）、若しくは紐状（平ゴム等）のもの、又はマルチフィラメントタイプの糸状のもの等を好ましく用いることができる。各部材を固定する接着剤としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のホットメルト接着剤等を特に制限なく用いることができる。   Examples of the material for forming the elastic member 5 include synthetic rubbers such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, stretchable polyolefin, and polyurethane. As a form of the elastic member, a cross-sectionally rectangular, square, circular, elliptical or polygonal thread shape (thread rubber or the like), a string shape (flat rubber etc.), or a multifilament type thread shape or the like It can be preferably used. As the adhesive for fixing each member, various hot melt adhesives conventionally used for absorbent articles such as disposable diapers can be used without particular limitation.

上述したおむつ１Ａを使用した際の作用効果について説明する。
おむつ１Ａは、図１に示すように、一対のサイドシール部４，４はそれぞれ、ウエスト開口部８からレッグ開口部９に亘って縦方向Ｙに連続して延び、且つ互いに離間する複数本のシール線４１，４２を有しており、最も横方向Ｘ外方側に位置する最外方シール線４１のシール強度が最も強く形成されている。即ち、最外方シール線４１を除く残りの連続シール線４２は、そのシール強度が最外方シール線４１のシール強度よりも弱くなっている。その為、おむつ１Ａを着用した着用者が、例えば、Ｍサイズの体型であるにも関わらず、太腿がＬサイズである場合には、シール強度の弱い連続シール線４２のレッグ開口部９側の端部のみ、接合状態を解除することにより、太腿が締め付けられず、着用者の個人差によるサイズの違いに適応させることができ、着用感が向上する。尚、最外方シール線４１のシール強度が最も強く形成されているので、連続シール線４２のレッグ開口部９側の端部の接合状態を解除したとしても、それに起因して最外方シール線４１が破れ難く、連続シール線４２の残りの連続線部分が接合状態を維持しているので、Ｍサイズの胴回りは、適度にフィットしており、着用感が向上する。 The effect at the time of using the diaper 1A mentioned above is demonstrated.
As shown in FIG. 1, the diaper 1 </ b> A has a pair of side seal portions 4, 4 each extending continuously from the waist opening 8 to the leg opening 9 in the longitudinal direction Y and spaced apart from each other. The seal lines 41 and 42 are provided, and the seal strength of the outermost seal line 41 located on the outermost side in the lateral direction X is the strongest. That is, the remaining continuous seal line 42 excluding the outermost seal line 41 has a lower seal strength than the seal strength of the outermost seal line 41. Therefore, when the wearer wearing the diaper 1A is, for example, an M size body, but the thigh is L size, the leg opening 9 side of the continuous seal line 42 with low seal strength is used. By releasing the joined state only at the end of the thigh, the thigh is not tightened, and it can be adapted to the difference in size due to individual differences of the wearer, and the wearing feeling is improved. Since the outermost seal line 41 has the strongest seal strength, the outermost seal is caused even if the joining state of the end of the continuous seal line 42 on the leg opening 9 side is released. Since the line 41 is not easily broken and the remaining continuous line portion of the continuous seal line 42 is maintained in the joined state, the M size waistline fits moderately and the wearing feeling is improved.

特に、おむつ１Ａは、図１に示すように、おむつ１Ａの連続シール線４２が、縦方向Ｙに、シール強度の弱い部分４２ｗ、シール強度の強い部分４２ｓ、及びシール強度の弱い部分４２ｗから形成されている。その為、おむつ１Ａを着用した着用者が、例えば、Ｍサイズの体型であるにも関わらず、ウエスト回り又は太腿がＬサイズである場合に、連続シール線４２の縦方向Ｙ両端部のシール強度の弱い部分４２ｗ，４２ｗの接合状態を解除し易く、ウエスト回り又は太腿が締め付けられず、着用者の個人差によるサイズの違いに更に適応させることができ、着用感が更に向上する。   In particular, in the diaper 1A, as shown in FIG. 1, the continuous seal line 42 of the diaper 1A is formed in the longitudinal direction Y from a portion 42w having a low sealing strength, a portion 42s having a high sealing strength, and a portion 42w having a low sealing strength. Has been. Therefore, when the wearer wearing the diaper 1A has, for example, an M size body shape and the waist circumference or thigh is L size, the seals at both ends in the longitudinal direction Y of the continuous seal line 42 It is easy to release the joined state of the weak parts 42w, 42w, the waistline or the thighs are not tightened, and it is possible to further adapt to the difference in size due to individual differences of the wearer, and the wearing feeling is further improved.

次に、本発明の第２〜４実施形態のおむつについて、図４〜図６に基づいて説明する。
第２〜４実施形態のおむつ１Ｂ〜１Ｄ（以下、「おむつ１Ｂ〜１Ｄ」ともいう）については、第１実施形態のおむつ１Ａと異なる点について説明する。特に説明しない点は、おむつ１Ａと同様であり、おむつ１Ａの説明が適宜適用される。また、おむつ１Ｂ〜１Ｄの効果については、おむつ１Ａの効果と異なる点について説明する。特に説明しない点は、おむつ１Ａの効果と同様であり、おむつ１Ａの効果の説明が適宜適用される。 Next, the diaper of 2nd-4th embodiment of this invention is demonstrated based on FIGS.
About the diapers 1B-1D of 2nd-4th Embodiment (henceforth "diaper 1B-1D"), a different point from the diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably. Moreover, about the effect of diapers 1B-1D, a different point from the effect of diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.

第２実施形態のおむつ１Ｂは、図４に示すように、一対のサイドシール部４，４のそれぞれが、互いに離間する２本のシール線４１，４２を有している。尚、最も横方向Ｘ外方側に位置する最外方シール線４１のシール強度が最も強くなっている。最外方シール線４１は、おむつ１Ｂにおいては、重ね合わされた状態の外装体３の縁部Ａ１，Ｂ１における横方向Ｘ外側縁に沿って、同じ幅の圧搾部により、間欠的に縦方向Ｙに延びて形成されている。   In the diaper 1B of the second embodiment, as shown in FIG. 4, each of the pair of side seal portions 4, 4 has two seal lines 41, 42 that are separated from each other. In addition, the seal strength of the outermost seal line 41 located on the outermost side in the lateral direction X is the strongest. In the diaper 1 </ b> B, the outermost seal line 41 is intermittently moved in the longitudinal direction Y by the compressed portion having the same width along the lateral direction X outer edge in the edge portions A <b> 1 and B <b> 1 of the outer package 3 in the overlapped state. It is extended and formed.

最外方シール線４１（シール線４１）を除く残りのシール線４２（連続シール線４２）は、図４に示すように、最外方シール線４１よりも横方向Ｘ内側（中心線ＣＬ２寄り）に配されており、おむつ１Ｂにおいては、最外方シール線４１と吸収性本体２との間に位置して配されている。連続シール線４２は、同じ幅の連続線状に形成されており、シール強度が略一定に形成されている。   As shown in FIG. 4, the remaining seal line 42 (continuous seal line 42) excluding the outermost seal line 41 (seal line 41) is laterally X inside (closer to the center line CL2) than the outermost seal line 41. In the diaper 1 </ b> B, the outermost seal line 41 and the absorbent main body 2 are located. The continuous seal line 42 is formed in a continuous line shape having the same width, and the seal strength is formed substantially constant.

上述したおむつ１Ｂを使用した際の作用効果について説明する。
おむつ１Ｂは、図４に示すように、サイドシール部４それぞれが、シール強度が最も強い最外方シール線４１以外に、同じ幅の連続線状に形成された連続シール線４２を有している。その為、一つ大きいおむつのサイズにするほどでない程度のサイズ調整が出来る。 The effect at the time of using the diaper 1B mentioned above is demonstrated.
In the diaper 1B, as shown in FIG. 4, each of the side seal portions 4 has a continuous seal line 42 formed in a continuous line shape of the same width in addition to the outermost seal line 41 having the strongest seal strength. Yes. Therefore, it is possible to adjust the size of the diaper that is not larger than one.

次に、第３実施形態のおむつ１Ｃは、図５に示すように、一対のサイドシール部４，４の内の一方のサイドシール部４において、互いに離間する３本のシール線４１，４２，４３を有している。尚、前記複数本のシール線の内、最も横方向Ｘ外方側に位置する最外方シール線４１のシール強度が最も強くなっている。最外方シール線４１は、おむつ１Ｃにおいては、重ね合わされた状態の外装体３の縁部Ａ１，Ｂ１における横方向Ｘ外側縁に沿って、同じ幅の圧搾部により、間欠的に縦方向Ｙに延びて形成されている。   Next, as shown in FIG. 5, the diaper 1 </ b> C of the third embodiment includes three seal wires 41, 42, 42 that are separated from each other in one side seal portion 4 of the pair of side seal portions 4, 4. 43. Of the plurality of seal lines, the seal strength of the outermost seal line 41 located on the outermost side in the lateral direction X is the strongest. In the diaper 1 </ b> C, the outermost seal line 41 is intermittently moved in the vertical direction Y by the compressed portion having the same width along the lateral direction X outer edge of the edge portions A <b> 1 and B <b> 1 of the outer package 3 in a superimposed state. It is extended and formed.

最外方シール線４１を除く残りのシール線４２，４３は、図５に示すように、連続シール線であり、最外方シール線４１よりも横方向Ｘ内側（中心線ＣＬ２寄り）に配されており、おむつ１Ｃにおいては、最外方シール線４１と吸収性本体２との間に位置して、連続シール線４２，４３が互いに離間して配されている。連続シール線４３は、連続シール線４２よりも横方向Ｘ内側（中心線ＣＬ２寄り）に配されている。また、連続シール線４２，４３は、同じ幅の連続線状に形成されており、シール強度が略一定に形成されている。最外方シール線４１と連続シール線４２との間隔、連続シール線４２と連続シール線４３との間隔は、略同じである。   As shown in FIG. 5, the remaining seal lines 42 and 43 excluding the outermost seal line 41 are continuous seal lines and are arranged inward in the lateral direction X from the outermost seal line 41 (closer to the center line CL2). In the diaper 1 </ b> C, the continuous seal lines 42 and 43 are arranged apart from each other, located between the outermost seal line 41 and the absorbent main body 2. The continuous seal line 43 is arranged on the inner side in the lateral direction X (closer to the center line CL2) than the continuous seal line 42. Further, the continuous seal lines 42 and 43 are formed in a continuous line shape having the same width, and the seal strength is formed substantially constant. The distance between the outermost seal line 41 and the continuous seal line 42 and the distance between the continuous seal line 42 and the continuous seal line 43 are substantially the same.

上述したおむつ１Ｃを使用した際の作用効果について説明する。
おむつ１Ｃは、図５に示すように、一方のサイドシール部４が、シール強度が最も強い最外方シール線４１以外に、２本の連続シール線４２，４３を有している。その為、２本の連続シール線４２，４３の縦方向Ｙの端部の接合状態を調整することができるので、着用者の個人差によるおむつのサイズの違いに更に適応させることができ、着用感が更に向上する。また、２か所（両サイド）で調整する必要がなく、1箇所だけで調整が可能であるため手間が省ける。 The effect at the time of using the diaper 1C mentioned above is demonstrated.
In the diaper 1 </ b> C, as shown in FIG. 5, one side seal portion 4 has two continuous seal wires 42 and 43 in addition to the outermost seal wire 41 having the strongest seal strength. Therefore, it is possible to adjust the joining state of the ends in the longitudinal direction Y of the two continuous seal lines 42 and 43, so that it can be further adapted to the difference in the size of the diaper due to individual differences of the wearer, The feeling is further improved. In addition, there is no need to adjust at two locations (both sides), and adjustment is possible at only one location, saving labor.

次に、第４実施形態のおむつ１Ｄは、図６に示すように、一対のサイドシール部４，４それぞれが、互いに離間する３本のシール線４１，４２，４３を有している。尚、前記複数本のシール線の内、最も横方向Ｘ外方側に位置する最外方シール線４１のシール強度が最も強くなっている。最外方シール線４１は、おむつ１Ｄにおいては、重ね合わされた状態の外装体３の縁部Ａ１，Ｂ１における横方向Ｘ外側縁に沿って、同じ幅の圧搾部により、間欠的に縦方向Ｙに延びて形成されている。   Next, as shown in FIG. 6, the diaper 1 </ b> D of the fourth embodiment has a pair of side seal portions 4, 4 each having three seal wires 41, 42, 43 that are separated from each other. Of the plurality of seal lines, the seal strength of the outermost seal line 41 located on the outermost side in the lateral direction X is the strongest. In the diaper 1D, the outermost seal line 41 is intermittently moved in the vertical direction Y by the compressed portion having the same width along the lateral X outer edge in the edge portions A1 and B1 of the outer package 3 in the overlapped state. It is extended and formed.

最外方シール線４１（シール線４１）を除く残りのシール線４２，４３は、図６に示すように、連続シール線であり、最外方シール線４１よりも横方向Ｘ内側（中心線ＣＬ２寄り）に配されており、おむつ１Ｄにおいては、最外方シール線４１と吸収性本体２との間に位置して、連続シール線４２，４３が互いに離間して配されている。連続シール線４３は、連続シール線４２よりも横方向Ｘ内側（中心線ＣＬ２寄り）に配されている。また、連続シール線４２，４３は、同じ幅の連続線状に形成されており、シール強度が略一定に形成されている。最外方シール線４１と連続シール線４２との間隔、連続シール線４２と連続シール線４３との間隔は、略同じである。   The remaining seal lines 42 and 43 excluding the outermost seal line 41 (seal line 41) are continuous seal lines as shown in FIG. In the diaper 1 </ b> D, the continuous seal lines 42 and 43 are spaced apart from each other and located between the outermost seal line 41 and the absorbent main body 2. The continuous seal line 43 is arranged on the inner side in the lateral direction X (closer to the center line CL2) than the continuous seal line 42. Further, the continuous seal lines 42 and 43 are formed in a continuous line shape having the same width, and the seal strength is formed substantially constant. The distance between the outermost seal line 41 and the continuous seal line 42 and the distance between the continuous seal line 42 and the continuous seal line 43 are substantially the same.

上述したおむつ１Ｄを使用した際の作用効果について説明する。
おむつ１Ｄは、図６に示すように、サイドシール部４それぞれが、シール強度が最も強い最外方シール線４１以外に、２本の連続シール線４２，４３を有している。その為、各サイドシール部４における２本の連続シール線４２，４３の縦方向Ｙの端部の接合状態を調整することができるので、着用者の個人差によるおむつのサイズの違いに更に２段階で適応させることができ、着用感が更に向上する。 The effect at the time of using diaper 1D mentioned above is demonstrated.
In the diaper 1D, as shown in FIG. 6, each of the side seal portions 4 has two continuous seal lines 42 and 43 in addition to the outermost seal line 41 having the strongest seal strength. Therefore, since the joining state of the edge part of the vertical direction Y of the two continuous seal lines 42 and 43 in each side seal part 4 can be adjusted, it is 2 in addition to the difference in the size of a diaper by a wearer's individual difference. It can be adapted in stages, further improving the feeling of wearing.

上述した本発明の実施形態であるパンツ型使い捨ておむつは、例えば以下に説明する製造方法によって製造することができる。以下、第１実施形態のおむつ１Ａを例に説明する。おむつ１Ａの製造方法は、前身頃側と後身頃側とを重ねた状態の帯状の外装体３における最外方シール線４１の形成予定部位を、搬送方向Ｅに交差する方向に間欠的に加熱圧搾して最外方シール線４１の前駆領域４１’を形成する最外方シール線前駆領域形成工程と、前身頃側と後身頃側とを重ねた状態の帯状の外装体３における残りの連続シール線４２の形成予定部位を加圧状態にする重合加圧工程と、前身頃側と後身頃側とを重ねた状態の帯状の外装体３における残りの連続シール線４２の形成予定部位に、外装体３の搬送方向Ｅに交差する方向に延在する光通過部２７を介してレーザー光を照射することにより、該外装体３を溶融接合して連続シール線４２を形成する連続シール線形成工程とを具備している。また、重合加圧工程の前に、帯状の外装体３（外層シート３１、内層シート３２）に吸収性本体２を固定する本体固定工程を具備している。   The underpants type disposable diaper which is embodiment of this invention mentioned above can be manufactured with the manufacturing method demonstrated below, for example. Hereinafter, the diaper 1A of the first embodiment will be described as an example. The manufacturing method of the diaper 1A intermittently heats a portion where the outermost seal line 41 is to be formed in the belt-like exterior body 3 in a state where the front body side and the back body side are overlapped in a direction intersecting the transport direction E. The outermost seal line precursor region forming step of squeezing to form the precursor region 41 ′ of the outermost seal line 41 and the remaining continuation in the strip-shaped exterior body 3 in a state where the front body side and the back body side are overlapped. The polymerization pressurizing step for forming the site where the seal line 42 is to be formed into a pressurized state, and the site where the remaining continuous seal line 42 is to be formed in the belt-shaped outer package 3 in a state where the front body side and the back body side are overlapped, Continuous seal line formation in which the exterior body 3 is melted and joined to form a continuous seal line 42 by irradiating a laser beam through a light passage portion 27 extending in a direction intersecting the transport direction E of the exterior body 3 Process. Moreover, the main body fixing process which fixes the absorptive main body 2 to the strip | belt-shaped exterior body 3 (the outer layer sheet | seat 31, the inner layer sheet | seat 32) is comprised before the superposition | polymerization pressurization process.

より具体的には、おむつ１Ａの製造方法においては、図７に示すように、帯状の外装体３（外層シート３１、内層シート３２）をその幅方向に折り畳むことにより、吸収性本体２が固定された帯状の外装体３の前身頃側と後身頃側とを重ね合わせ、それによって、「サイドシール部４が形成されていないパンツ型使い捨ておむつ１Ａの前駆体が一方向に連なってなる、おむつ連続体１０」を製造する。そして、図８に示すように、例えば加熱エンボス装置によって間欠的に延びる最外方シール線４１の前駆領域４１’を形成した後、レーザー光３０の照射によって残りの連続的に延びる連続シール線４２を形成し、その後カット装置によって最外方シール線４１の前駆領域４１’を搬送方向Ｅに交差する方向に二等分して、おむつ１Ａの個々にカットするそれによって最外方シール線４１及び残りの連続シール線４２を有する一対のサイドシール部４，４を備える外装体３を具備するパンツ型使い捨ておむつ１Ａを連続的に製造する。   More specifically, in the manufacturing method of the diaper 1A, as shown in FIG. 7, the absorbent main body 2 is fixed by folding the strip-shaped exterior body 3 (outer layer sheet 31, inner layer sheet 32) in the width direction. The front body side and the back body side of the formed belt-shaped outer package 3 are overlapped, thereby “a diaper in which the precursor of the pants-type disposable diaper 1A in which the side seal portion 4 is not formed is continuous in one direction” A continuum 10 "is produced. Then, as shown in FIG. 8, for example, a precursor region 41 ′ of the outermost seal line 41 that is intermittently extended by a heating embossing device is formed, and then the remaining continuous seal line 42 that is continuously extended by irradiation with the laser beam 30. And then bisecting the precursor region 41 ′ of the outermost seal line 41 in a direction intersecting the conveying direction E by a cutting device, and cutting the diaper 1A individually, thereby forming the outermost seal line 41 and The pants-type disposable diaper 1 </ b> A including the exterior body 3 including the pair of side seal portions 4 and 4 having the remaining continuous seal line 42 is continuously manufactured.

より詳細に説明すると、先ず、図７に示すとおり、原反ロール（図示せず）から連続的に供給される帯状の外層シート３１と、原反ロール（図示せず）から連続的に供給される帯状の内層シート３２の間に、ウエストギャザーを形成するウエスト部弾性部材５ａ、胴回りギャザーを形成する胴回り部弾性部材５ｂ及びレッグギャザーを形成するレッグ部弾性部材５ｃを、所定の伸長率に伸長させた伸長状態で各々複数本配する。このとき、レッグ部弾性部材５ｃは、シートの搬送方向Ｅとは直交して往復運動する公知の揺動ガイド（図示せず）を介して、所定の脚周りパターンを形成しながら配される。また、帯状の外層シート３１及び帯状の内層シート３２には、それらを重ね合わせる前に、両シート３１，３２のいずれか一方又は双方の対向する面の所定部位に、接着剤塗工機（図示せず）によりホットメルト型接着剤を塗工する。なお、ウエスト部弾性部材５ａ、胴回り部弾性部材５ｂ等の弾性部材は、両シート３１，３２における、最外方シール線４１の前駆領域４１’及び連続シール線４２の形成予定部位において、おむつ１Ａ形成後の該弾性部材の大幅な縮みや該弾性部材の抜け等の不都合を回避するために、接着剤を塗工しておくことが好ましい。   More specifically, first, as shown in FIG. 7, the belt-like outer layer sheet 31 continuously supplied from the raw fabric roll (not shown) and the continuous roll roll (not shown) are supplied continuously. Between the belt-like inner layer sheet 32, the waist elastic member 5a that forms the waist gather, the waist elastic member 5b that forms the waist gather, and the leg elastic member 5c that forms the leg gather are stretched to a predetermined elongation rate. A plurality of each are arranged in the stretched state. At this time, the leg elastic member 5c is disposed while forming a predetermined leg-around pattern via a known swing guide (not shown) that reciprocates perpendicular to the sheet conveying direction E. In addition, the belt-shaped outer layer sheet 31 and the belt-shaped inner layer sheet 32 are coated with an adhesive coating machine (see FIG. (Not shown) to apply hot melt adhesive. Note that the elastic members such as the waist elastic member 5a and the waistline elastic member 5b are the diapers 1A at the formation regions of the precursor region 41 ′ of the outermost seal line 41 and the continuous seal line 42 in both sheets 31 and 32. In order to avoid inconveniences such as significant shrinkage of the elastic member after formation and disconnection of the elastic member, it is preferable to apply an adhesive.

そして、図７に示すとおり、一対のニップロール１１，１１の間に、ウエスト部弾性部材５ａ、胴回り部弾性部材５ｂ及びレッグ部弾性部材５ｃを伸長状態で挟み込んだ帯状の外層シート３１及び帯状の内層シート３２を送り込んで加圧することにより、帯状シート３１，３２間に複数本の弾性部材５ａ，５ｂ，５ｃが伸長状態で配された帯状の外装体３を形成する。
また、この外装体３の形成工程においては、隣り合う２本の胴回り部弾性部材５ｂ，５ｂ間において帯状の外層シート３１と帯状の内層シート３２とを接合する複数の接合部３３を、凸ロール１２とこれに対応するアンビルロール１３等の接合手段を用いて形成する。
その後、弾性部材プレカット手段（図示せず）を用いて、後述する吸収性本体２を配する位置に対応させて、複数本の胴回り部弾性部材５ｂ及び複数本のレッグ部弾性部材５ｃを押圧して、収縮機能が発現されないように個々複数個に分断する。前記弾性部材プレカット手段としては、例えば、特開２００２−２５３６０５号公報に記載の複合伸縮部材の製造方法に用いる弾性部材分断部等が挙げられる。 And as shown in FIG. 7, the strip | belt-shaped outer-layer sheet | seat 31 and the strip | belt-shaped inner layer which pinched | interposed the waist part elastic member 5a, the waist part elastic member 5b, and the leg part elastic member 5c between a pair of nip rolls 11 and 11 in the expansion | extension state. By feeding and pressurizing the sheet 32, a band-shaped exterior body 3 is formed in which a plurality of elastic members 5 a, 5 b, 5 c are arranged in an extended state between the band-shaped sheets 31, 32.
Moreover, in the formation process of this exterior body 3, the some junction part 33 which joins the strip | belt-shaped outer-layer sheet 31 and the strip | belt-shaped inner-layer sheet | seat 32 between two adjacent trunk periphery elastic members 5b and 5b is made into a convex roll. 12 and a corresponding joining means such as anvil roll 13 corresponding thereto.
Thereafter, the plurality of waistline elastic members 5b and the plurality of leg elastic members 5c are pressed using an elastic member pre-cut means (not shown) so as to correspond to a position where the absorbent main body 2 described later is disposed. Then, it is divided into a plurality of pieces so that the contractile function is not expressed. Examples of the elastic member precut means include an elastic member dividing portion used in the method for manufacturing a composite elastic member described in JP-A-2002-253605.

次いで、図７に示すとおり、別工程で製造された吸収性本体２に予めホットメルト接着剤等の接着剤を塗工し、該吸収性本体２を９０度回転させて、帯状の外装体３を構成する内層シート３２上に間欠的に供給して固定する（本体固定工程）。そして、図７に示すとおり、吸収性本体２が配置された帯状の外装体３におけるレッグ部弾性部材７で環状に囲まれた環状部の内側にレッグホールＬＯ’を形成する。このレッグホール形成工程は、ロータリーカッター、レーザーカッター等の従来からこの種の物品の製造方法における手法と同様の手法を用いて実施することができる。   Next, as shown in FIG. 7, an adhesive such as a hot melt adhesive is applied in advance to the absorbent main body 2 manufactured in a separate process, and the absorbent main body 2 is rotated by 90 degrees to form a strip-shaped outer package 3. Are intermittently supplied and fixed on the inner layer sheet 32 constituting the body (main body fixing step). Then, as shown in FIG. 7, a leg hole LO ′ is formed inside the annular portion that is annularly surrounded by the leg elastic member 7 in the strip-shaped exterior body 3 in which the absorbent main body 2 is disposed. This leg hole forming step can be carried out by using a technique similar to that in a conventional method for manufacturing this type of article, such as a rotary cutter and a laser cutter.

次いで、帯状の外装体３をその幅方向（外装体３の搬送方向Ｅと交差する方向）に折り畳む。より具体的には、図７に示すとおり、帯状の外装体３の搬送方向に沿う両側部３ａ，３ａを、吸収性本体２の縦方向両端部を覆うように折り返して吸収性本体２の縦方向両端部を固定した後、外装体３を吸収性本体２とともにその幅方向に２つ折りする。こうして、おむつ連続体１０が得られる。   Next, the belt-shaped exterior body 3 is folded in the width direction (direction intersecting the transport direction E of the exterior body 3). More specifically, as shown in FIG. 7, the side portions 3 a, 3 a along the transport direction of the strip-shaped exterior body 3 are folded back so as to cover both longitudinal ends of the absorbent main body 2, thereby After fixing the direction both ends, the exterior body 3 is folded in two in the width direction together with the absorbent main body 2. In this way, the diaper continuous body 10 is obtained.

次いで、こうして製造されたおむつ連続体１０に対して、図８に示すとおり、熱エンボス装置１００を用いて間欠的に延びる最外方シール線４１の前駆領域４１’を形成した後、レーザー式接合装置２０を用いて連続的に延びるレーザー光３０を照射して前駆領域４１’と吸収性本体２との間に残りの連続シール線４２を形成する。その後、カット装置２００を用いて最外方シール線４１の前駆領域４１’を搬送方向Ｅに交差する方向に二等分して、おむつ１Ａの個々にカットする。このようにして間欠的に延びる最外方シール線４１及び残りの連続的に延びる連続シール線４２を有する一対のサイドシール部４，４を備える外装体３を具備するパンツ型使い捨ておむつ１Ａを連続的に製造する。   Next, as shown in FIG. 8, the precursor region 41 ′ of the outermost seal line 41 extending intermittently using the hot embossing device 100 is formed on the diaper continuous body 10 thus manufactured, and then laser bonding is performed. The remaining continuous seal line 42 is formed between the precursor region 41 ′ and the absorptive body 2 by irradiating the laser beam 30 that continuously extends using the apparatus 20. Thereafter, using the cutting device 200, the precursor region 41 'of the outermost seal line 41 is divided into two equal parts in the direction intersecting the transport direction E and cut into individual diapers 1A. In this way, the pants-type disposable diaper 1A including the exterior body 3 including the pair of side seal portions 4, 4 having the outermost seal line 41 extending intermittently and the remaining continuous seal line 42 extending continuously is continuously provided. Manufacturing.

エンボス装置１００は、エンボスロール１０１及びアンビルロール１０２を備えている。エンボスロール１０１にはその周面に、多数の凸部１０３が設けられている。凸部１０３の周方向の長さは、形成すべき最外方シール線４１の幅の概ね２倍になっている。また、凸部１０３のロール軸方向の長さは、形成すべき最外方シール線４１と概ね同じになっており、ロール軸方向の全長に亘っている。エンボスロール１０１とアンビルロール１０２とは、それらの軸方向が互いに平行になるように、かつ周面が当接するか、又は所定のクリアランスを有するように配置されている。最外方シール線前駆領域形成工程においては、エンボス装置１００を用いて、上述したおむつ連続体１０を、両ロール１０１，１０２間に通過させるときに加熱圧搾して、搬送方向Ｅに交差する方向に間欠的に延びる最外方シール線４１の前駆領域４１’を形成する。尚、形成された最外方シール線４１の前駆領域４１’の幅は、最外方シール線４１の幅の２倍である。   The embossing device 100 includes an embossing roll 101 and an anvil roll 102. The embossing roll 101 is provided with a large number of convex portions 103 on its peripheral surface. The length of the convex portion 103 in the circumferential direction is approximately twice the width of the outermost seal line 41 to be formed. Moreover, the length of the convex part 103 in the roll axis direction is substantially the same as the outermost seal line 41 to be formed, and extends over the entire length in the roll axis direction. The embossing roll 101 and the anvil roll 102 are arranged so that their axial directions are parallel to each other, and the peripheral surfaces are in contact with each other or have a predetermined clearance. In the outermost seal line precursor region forming step, the embossing device 100 is used to heat and squeeze the diaper continuum 10 described above when passing between the two rolls 101 and 102, and the direction intersecting the transport direction E. The precursor region 41 ′ of the outermost seal line 41 extending intermittently is formed. Note that the width of the precursor region 41 ′ of the formed outermost seal line 41 is twice the width of the outermost seal line 41.

このようにして、最外方シール線４１の前駆領域４１’が形成されたら、次にレーザー式接合装置２０を用いて、最外方シール線４１の前駆領域４１’と吸収性本体２との間の位置にて、搬送方向Ｅに交差する方向に沿って連続的に溶融接合させ、連続的に延びる連続シール線４２を形成する。このレーザー式接合装置２０について説明すると、レーザー式接合装置２０は、図８に示すとおり、矢印Ｄ方向に回転駆動される中空の円筒ロール２３と、円筒ロール２３の中空部に配され、円筒ロール２３の周面部を形成する円筒状の支持部材２１に向けてレーザー光３０を照射する照射ヘッド３５と、無端状の加圧ベルト２４（押さえ部材）を備えたベルト式加圧装置２６とを備えている。   When the precursor region 41 ′ of the outermost seal line 41 is formed in this way, the precursor region 41 ′ of the outermost seal line 41 and the absorbent main body 2 are next used by using the laser bonding apparatus 20. At a position in between, continuous melt bonding is performed along a direction intersecting the conveyance direction E, and a continuous seal line 42 extending continuously is formed. The laser-type joining device 20 will be described. The laser-type joining device 20 is arranged in a hollow cylindrical roll 23 that is rotationally driven in the direction of arrow D and a hollow portion of the cylindrical roll 23 as shown in FIG. The irradiation head 35 which irradiates the laser beam 30 toward the cylindrical support member 21 forming the peripheral surface portion 23, and the belt type pressure device 26 including the endless pressure belt 24 (pressing member). ing.

レーザー式接合装置２０は、支持部材２１（円筒ロール２３の周面部）と加圧ベルト２４との間隔を増減調整できる間隔調整機構（図示せず）を有し、該間隔の調整により、支持部材２１と加圧ベルト２４とによって、おむつ連続体１０に加える圧力を適宜調整することができる。   The laser-type bonding apparatus 20 has an interval adjustment mechanism (not shown) that can increase or decrease the interval between the support member 21 (the peripheral surface portion of the cylindrical roll 23) and the pressure belt 24. By adjusting the interval, the support member The pressure applied to the diaper continuous body 10 can be appropriately adjusted by the pressure belt 21 and the pressure belt 24.

支持部材２１は、円筒ロール２３の周面部を形成しており、円筒ロール２３の回転軸方向両端部を形成する一対の環状の枠体２２，２２間に挟持固定されている。支持部材２１は、鉄、アルミニウム、ステンレス鋼、銅等の金属材料又はセラミックス等の耐熱性を有する材料からなる。   The support member 21 forms a peripheral surface portion of the cylindrical roll 23, and is clamped and fixed between a pair of annular frames 22, 22 that form both ends of the cylindrical roll 23 in the rotation axis direction. The support member 21 is made of a metal material such as iron, aluminum, stainless steel, or copper, or a material having heat resistance such as ceramics.

支持部材２１は、レーザー光が通過可能な光通過部２７を有している。支持部材２１は、図８に示すとおり、光通過部として、該支持部材２１を厚み方向に貫通するスリット状の開口部２７を有している。開口部２７は、平面視して、形成予定の連続シール線４２に対応する形状に形成されている。具体的には、連続シール線４２におけるシール強度の弱い部分４２ｗに対応する部分が相対的に幅の狭い矩形形状に形成されており、連続シール線４２におけるシール強度の強い部分４２ｓに対応する部分が相対的に幅の広い矩形形状に形成されている。開口部２７は、その縦方向を、おむつ連続体１０（帯状の外装体３）の搬送方向Ｅと交差する方向、より具体的には、円筒ロール２３の回転軸の軸長方向と平行な方向に一致させて、円筒状の支持部材２１の周方向に所定間隔を置いて複数形成されている。支持部材２１は、開口部２７ではレーザー光を通過させる一方、開口部２７以外の部分ではレーザー光を通過（透過）させない。支持部材２１に開口部２７を形成する方法としては、１）環状の枠体２２の周長と同じ長さの単一の環状部材からなる支持部材２１の所定箇所にエッチング、パンチング、レーザー加工等により開口部２７を穿設する方法、２）支持部材２１として、単一の環状部材に代えて、湾曲した矩形形状の部材を複数用い、それら複数の部材を、一対の枠体２２，２２間に、該枠体２２の周方向に所定間隔を置いて配置する方法が挙げられる。   The support member 21 has a light passage portion 27 through which laser light can pass. As shown in FIG. 8, the support member 21 has a slit-like opening 27 that penetrates the support member 21 in the thickness direction as a light passage portion. The opening 27 is formed in a shape corresponding to the continuous seal line 42 to be formed in plan view. Specifically, the portion corresponding to the portion 42 w having low sealing strength in the continuous seal line 42 is formed in a relatively narrow rectangular shape, and the portion corresponding to the portion 42 s having high sealing strength in the continuous seal wire 42. Is formed in a relatively wide rectangular shape. The opening 27 has a longitudinal direction that intersects the transport direction E of the diaper continuous body 10 (band-shaped outer package 3), more specifically, a direction parallel to the axial length direction of the rotation axis of the cylindrical roll 23. A plurality of cylindrical support members 21 are formed at predetermined intervals in the circumferential direction. The support member 21 allows the laser light to pass through the opening 27, but does not allow the laser light to pass (transmit) at portions other than the opening 27. As a method of forming the opening 27 in the support member 21, 1) etching, punching, laser processing, or the like at a predetermined position of the support member 21 made of a single annular member having the same length as the circumferential length of the annular frame 22. 2) The support member 21 is replaced with a single annular member, and a plurality of curved rectangular members are used as the support member 21, and the plurality of members are connected between the pair of frames 22, 22. In addition, a method of arranging the frame body 22 at a predetermined interval in the circumferential direction may be mentioned.

ベルト式加圧装置２６は、無端状の加圧ベルト２４（押さえ部材）及び該加圧ベルト２４が架け渡された状態で回転する３本のロール２５ａ，２５ｂ，２５ｃを備えている。ロール２５ａ，２５ｂ，２５ｃは駆動ロールでもよく、円筒ロール２３に連れ回りする従動ロールでもよい。加圧ベルト２４は、ロール２５ａ，２５ｂ，２５ｃのいずれか１以上を回転駆動として、又は円筒ロール２３と連れ回りして、円筒ロール２３（支持部材２１）と同速度で移動する。支持部材２１及び加圧ベルト２４は、空冷、水冷等により温度を所定の温度範囲に維持することが好ましい。   The belt-type pressure device 26 includes an endless pressure belt 24 (pressing member) and three rolls 25a, 25b, and 25c that rotate in a state where the pressure belt 24 is stretched. The rolls 25a, 25b, and 25c may be drive rolls or driven rolls that rotate with the cylindrical roll 23. The pressure belt 24 moves at the same speed as the cylindrical roll 23 (supporting member 21) by rotating any one or more of the rolls 25a, 25b, and 25c, or with the cylindrical roll 23. The support member 21 and the pressure belt 24 are preferably maintained in a predetermined temperature range by air cooling, water cooling, or the like.

加圧ベルト２４（押さえ部材）としては、加工時に発生する熱に耐え得る耐熱性を有する金属又は樹脂製のベルトを用いることができ、例えば、鉄、アルミニウム、ステンレス鋼等の金属材料からなるものを用いることができる。また、加圧ベルト２４としては、通常、被加工物（帯状の外装体３）に対して照射されるレーザー光の透過性を有しないものが用いられるが、該透過性を有するものを用いることもできる。   As the pressure belt 24 (pressing member), a heat-resistant metal or resin belt that can withstand the heat generated during processing can be used. For example, the pressure belt 24 is made of a metal material such as iron, aluminum, or stainless steel. Can be used. In addition, as the pressure belt 24, a belt that does not transmit the laser beam irradiated to the workpiece (strip-shaped outer package 3) is usually used. You can also.

図８に示すとおり、中空の円筒ロール２３の中空部には、該円筒ロール２３の周面部を形成する支持部材２１に向けてレーザー光３０を照射する照射ヘッド３５が設けられている。照射ヘッド３５は、レーザー光３０を自在に走査するガルバノスキャナ（モータ軸にミラーが付いた装置）であり、レーザー光３０を円筒ロール２３の回転軸と平行な方向に進退させる機構、レーザー光３０が支持部材２１上のおむつ連続体１０に当たる位置（照射点）を円筒ロール２３の周方向に移動させる機構、及び円筒ロール２３の周面上でレーザー光３０のスポット径を一定にする機構等を備えている。レーザー照射機構は、このような構成を有することによって、レーザー光３０の照射点を、円筒ロール２３の周方向及び該周方向と直交する方向の両方向に任意に移動させることができる。   As shown in FIG. 8, an irradiation head 35 that irradiates a laser beam 30 toward the support member 21 that forms the peripheral surface portion of the cylindrical roll 23 is provided in the hollow portion of the hollow cylindrical roll 23. The irradiation head 35 is a galvano scanner (an apparatus having a motor shaft with a mirror) that freely scans the laser beam 30, a mechanism for moving the laser beam 30 back and forth in a direction parallel to the rotation axis of the cylindrical roll 23, and the laser beam 30. A mechanism for moving the position (irradiation point) at which the diaper continuum 10 hits the support member 21 in the circumferential direction of the cylindrical roll 23, a mechanism for making the spot diameter of the laser beam 30 constant on the circumferential surface of the cylindrical roll 23, and the like. I have. By having such a configuration, the laser irradiation mechanism can arbitrarily move the irradiation point of the laser light 30 in both the circumferential direction of the cylindrical roll 23 and the direction orthogonal to the circumferential direction.

図８に示すとおり、おむつ連続体１０は、図示しない案内ロール等によって、所定のテンションが掛けられた状態で、矢印Ｄ方向に回転駆動される円筒ロール２３の周面部を形成する支持部材２１の外面上に導入され、該支持部材２１に巻き掛けられるようにして該円筒ロール２３の回転によりその周方向に所定距離搬送された後、図示しない導出ロール及びニップロール等によって該支持部材２１から離れる。このように、おむつ連続体１０を、円筒ロール２３の周面部を形成する支持部材２１に所定のテンションで巻き掛けかつ加圧ベルト２４によって圧接するようにして搬送することにより、おむつ連続体１０における支持部材２１と加圧ベルト２４とに挟まれた部分及びその近傍は、レーザー光の照射による溶融接合前からその厚み方向に加圧（圧縮）された状態となる。このため、おむつ連続体１０が不織布を含む場合等に、該おむつ連続体１０をより効率的に圧縮させることができ、結果として、斯かる圧縮中のおむつ連続体１０に対してレーザー光を照射してこれを溶融接合する際に、複数枚のシート（外装体３）どうしをより確実に融着接合させることが可能となる。   As shown in FIG. 8, the diaper continuous body 10 includes a support member 21 that forms a peripheral surface portion of a cylindrical roll 23 that is rotationally driven in the direction of arrow D in a state where a predetermined tension is applied by a guide roll (not shown). After being introduced onto the outer surface and transported by a predetermined distance in the circumferential direction by the rotation of the cylindrical roll 23 so as to be wound around the support member 21, it is separated from the support member 21 by an unillustrated lead roll, nip roll, or the like. As described above, the diaper continuous body 10 is wound around the support member 21 forming the peripheral surface portion of the cylindrical roll 23 with a predetermined tension and is conveyed so as to be in pressure contact with the pressure belt 24. The portion sandwiched between the support member 21 and the pressure belt 24 and the vicinity thereof are in a state of being pressurized (compressed) in the thickness direction from before the fusion bonding by laser light irradiation. For this reason, when the diaper continuous body 10 contains a nonwoven fabric, the diaper continuous body 10 can be more efficiently compressed, and as a result, the diaper continuous body 10 being compressed is irradiated with laser light. Thus, when this is melt-bonded, a plurality of sheets (the outer package 3) can be more reliably fusion-bonded.

図８に示す重合加圧工程においては、おむつ連続体１０を連続搬送しつつ、その一方の面１０ａを、円筒ロール２３の周面部を形成しかつレーザー光３０が通過可能なスリット状の開口部２７（光通過部）を有する支持部材２１の外面に当接させ、支持部材２１と加圧ベルト２４（押さえ部材）とによって加圧状態とする。次いで連続シール線形成工程において、加圧状態となったおむつ連続体１０に対して、支持部材２１側から開口部２７を介してレーザー光３０を照射することにより、外装体３に連続的に延びる連続シール線４２を形成する。   In the polymerization pressurization step shown in FIG. 8, while the diaper continuous body 10 is continuously conveyed, a slit-like opening that forms the peripheral surface portion of the cylindrical roll 23 and allows the laser light 30 to pass through one surface 10 a thereof. 27 is brought into contact with the outer surface of the support member 21 having the light passing portion 27 and is brought into a pressurized state by the support member 21 and the pressure belt 24 (pressing member). Next, in the continuous seal line forming step, the diaper continuous body 10 in a pressurized state is continuously extended to the exterior body 3 by irradiating the laser beam 30 through the opening 27 from the support member 21 side. A continuous seal line 42 is formed.

図９は、レーザー式接合装置２０を用いておむつ連続体１０（帯状のシート積層体）を溶融して連続シール線４２を形成する様子を説明する図である。図９（ａ）には、おむつ連続体１０のレーザー光３０による連続シール線４２形成予定部分１０Ｃ及びその近傍が模式的に示されている。図示の態様におけるおむつ連続体１０の連続シール線４２形成予定部分１０Ｃは、おむつ連続体１０の吸収性本体２と形成された最外方シール線４１の前駆領域４１’との間の、吸収性本体２が配置されていない領域である。斯かる連続シール線４２形成予定部分１０Ｃは、例えばおむつ１の胴周り部においては、４枚のシートが重ねられた４層構造部分となっている。４層構造部分は、図９（ａ）に示すとおり、腹側領域Ａにおける１枚の外装体３を構成する２枚のシート（外層シート３１及び内層シート３２）と、背側領域Ｂにおける１枚の外装体３を構成する同じく２枚のシート３１，３２とからなり、これら４枚のシートが積層されて構成されている。なお、４層構造部分において、互いに重なり合うシート３１，３２間には、胴回り部弾性部材５ｂ等の弾性部材５が介在配置されているが、図９では、説明容易の観点から、該弾性部材５の図示を省略している。   FIG. 9 is a diagram illustrating a state in which a continuous seal line 42 is formed by melting the diaper continuum 10 (band-shaped sheet laminate) using the laser bonding apparatus 20. FIG. 9A schematically shows a portion 10C where the continuous seal line 42 is to be formed by the laser beam 30 of the diaper continuous body 10 and the vicinity thereof. The portion 10C where the continuous seal line 42 is to be formed in the diaper continuous body 10 in the illustrated embodiment is absorbable between the absorbent main body 2 of the diaper continuous body 10 and the precursor region 41 'of the outermost seal line 41 formed. This is an area where the main body 2 is not arranged. Such a portion 10C where the continuous seal line 42 is to be formed is, for example, a four-layer structure portion in which four sheets are stacked in the waist portion of the diaper 1. As shown in FIG. 9A, the four-layer structure portion includes two sheets (an outer layer sheet 31 and an inner layer sheet 32) constituting one exterior body 3 in the ventral region A, and one in the dorsal region B. It consists of the two sheets 31 and 32 which comprise the sheet | seat exterior body 3, and these four sheets are laminated | stacked and comprised. In the four-layer structure portion, the elastic member 5 such as the waistline elastic member 5b is interposed between the sheets 31 and 32 that overlap each other. However, in FIG. Is omitted.

おむつ連続体１０における４層構造の連続シール線４２形成予定部分１０Ｃにおいて、おむつ連続体１０の一方の面１０ａ（支持部材２１との当接面）を構成する外層シート３１及び一方の面１０ａを構成するシート以外のシート（内層シート３２）は、いずれか一方又は両方が、レーザー光３０を吸収して発熱するシートである。図示の態様においては、連続シール線４２形成予定部分１０Ｃを構成する４枚のシート３１，３２のすべてが、レーザー光３０を吸収して発熱するシート（不織布）である。また、連続シール線４２形成予定部分１０Ｃ及びその近傍における互いに重なり合う外層シート３１及び内層シート３２の２枚のシート間は、レーザー光３０の照射前において、接着剤等により接合されていてもよく、全く接合されていなくてもよい   In the portion 10C where the continuous seal line 42 of the four-layer structure in the diaper continuous body 10 is to be formed, the outer layer sheet 31 and the one surface 10a constituting one surface 10a (the contact surface with the support member 21) of the diaper continuous body 10 are provided. One or both of the sheets (inner layer sheet 32) other than the constituting sheet are sheets that absorb the laser beam 30 and generate heat. In the illustrated embodiment, all of the four sheets 31 and 32 constituting the portion 10C where the continuous seal line 42 is to be formed are sheets (nonwoven fabrics) that absorb the laser beam 30 and generate heat. Further, the two sheets of the outer layer sheet 31 and the inner layer sheet 32 that overlap each other in the portion 10C where the continuous seal line 42 is to be formed may be joined by an adhesive or the like before the irradiation with the laser beam 30, It may not be joined at all

おむつ連続体１０は、図９（ｂ）に示すとおり、一方の面１０ａが支持部材２１に当接しかつ連続シール線４２形成予定部分１０Ｃがスリット状の開口部２７上に位置するように、矢印Ｄ方向に回転する支持部材２１上に導入されるとともに、他方の面１０ｂに加圧ベルト２４（押さえ部材）が押し付けられることによって、矢印Ａ方向に搬送されつつ厚み方向に加圧（圧縮）される。そして、斯かる搬送中かつ加圧状態の連続シール線４２形成予定部分１０Ｃに対して、支持部材２１側から開口部２７を介してレーザー光３０が照射される。前述したように、レーザー光３０の照射点は、円筒ロール２３の周方向に任意に移動可能に構成されており、開口部２７の該周方向に沿った移動に追従して移動するように設定されているので、該開口部２７上に位置する連続シール線４２形成予定部分１０Ｃには、その搬送中にレーザー光３０が一定時間連続的に照射される。   As shown in FIG. 9B, the diaper continuous body 10 has an arrow so that one surface 10a is in contact with the support member 21 and the portion 10C where the continuous seal line 42 is to be formed is positioned on the slit-shaped opening 27. While being introduced onto the support member 21 that rotates in the direction D, the pressure belt 24 (pressing member) is pressed against the other surface 10b, so that it is pressurized (compressed) in the thickness direction while being conveyed in the direction of arrow A. The Then, the laser beam 30 is irradiated from the support member 21 side through the opening 27 to the portion 10C where the continuous seal line 42 is to be formed while being transported and pressurized. As described above, the irradiation point of the laser beam 30 is configured to be arbitrarily movable in the circumferential direction of the cylindrical roll 23 and is set so as to follow the movement of the opening 27 along the circumferential direction. Therefore, the laser beam 30 is continuously irradiated to the portion 10C where the continuous seal line 42 scheduled to be formed located on the opening 27 is being conveyed for a certain period of time.

４層構造の連続シール線４２形成予定部分１０Ｃにレーザー光３０が照射されると、該連続シール線４２形成予定部分１０Ｃに存するシート３１，３２の形成材料（繊維等）は、レーザー光３０の直射による発熱によって気化して消失し、該連続シール線４２形成予定部分１０Ｃの近傍に存する該形成材料は、レーザー光３０によって間接的に熱されて溶融する。その結果、図９（ｃ）に示すとおり、４層構造の連続シール線４２形成予定部分１０Ｃが溶融されて接合され、連続シール線４２が形成される   When the laser beam 30 is irradiated on the portion 10C where the continuous seal line 42 is to be formed having a four-layer structure, the forming materials (fibers, etc.) of the sheets 31 and 32 existing in the portion 10C where the continuous seal line 42 is to be formed are The forming material that is vaporized and disappeared by the heat generated by the direct irradiation and is present in the vicinity of the portion 10C where the continuous seal line 42 is to be formed is indirectly heated by the laser beam 30 and melted. As a result, as shown in FIG. 9C, the portion 10C where the continuous seal line 42 having a four-layer structure is to be formed is melted and joined to form the continuous seal line 42.

連続シール線４２形成予定部分１０Ｃの溶融部分から切断されない観点から、スリット状の開口部２７の幅、連続シール線４２形成予定部分１０Ｃに対するレーザー光３０の照射時間、又は支持部材２１と加圧ベルト２４とによるおむつ連続体１０の加圧状態を調整する。こうして、間欠的に延びる最外方シール線４１の前駆領域４１’及び連続的に延びる連続シール線４２を有するおむつ連続体１０が形成される。なお、必要に応じ、吸引装置、排気装置等の公知の冷却手段を用いてシート３１，３２の溶融接合部分を強制的に冷却し、切断されないように接合部の形成を促進してもよい。   From the viewpoint of not being cut from the melted portion of the continuous seal line 42 formation planned portion 10C, the width of the slit-shaped opening 27, the irradiation time of the laser beam 30 to the continuous seal line 42 formation planned portion 10C, or the support member 21 and the pressure belt 24, the pressure state of the diaper continuous body 10 is adjusted. Thus, the diaper continuum 10 having the precursor region 41 ′ of the outermost seal line 41 extending intermittently and the continuous seal line 42 extending continuously is formed. In addition, if necessary, the melt-bonded portions of the sheets 31 and 32 may be forcibly cooled by using known cooling means such as a suction device and an exhaust device, and the formation of the joint portions may be promoted so as not to be cut.

こうして１箇所の連続シール線４２形成予定部分１０Ｃに連続シール線４２が形成されると、レーザー光３０は、その照射点が矢印方向Ｄとは逆方向に隣接する別の開口部２７に当たるように移動され、該別の開口部２７を介してその上に位置する別の連続シール線４２形成予定部分１０Ｃに照射される。これにより、別の連続シール線４２形成予定部分１０Ｃが前記と同様に溶融接合され、別の連続シール線４２が形成される。以後、同様の操作を繰り返すことにより、間欠的に延びる最外方シール線４１の前駆領域４１’及び連続的に延びる連続シール線４２が間欠的に配されたおむつ連続体１０が製造される。   In this way, when the continuous seal line 42 is formed in the portion 10C where the continuous seal line 42 is to be formed, the laser beam 30 is irradiated so that the irradiation point hits another opening 27 adjacent in the direction opposite to the arrow direction D. It is moved and irradiated to another portion 10 </ b> C where the continuous seal line 42 is to be formed via the other opening 27. Thereby, another continuous seal line 42 formation planned part 10C is fusion-bonded similarly to the above, and another continuous seal line 42 is formed. Thereafter, by repeating the same operation, the diaper continuous body 10 in which the precursor region 41 ′ of the outermost seal line 41 extending intermittently and the continuous seal line 42 extending continuously is intermittently manufactured.

カット装置２００は、カットロール２０１及びアンビルロール２０２を備えている。カットロール２０１にはその周面に、多数の刃２０３が設けられている。刃２０３は、カットロール２０１のロール軸方向全長に亘って形成されている。カットロール２０１とアンビルロール２０２とは、それらの軸方向が互いに平行になるように、所定のクリアランスを有するように配置されている。そして、カット装置２００を用いて、上述した最外方シール線４１の前駆領域４１’及び連続シール線４２が間欠的に配されたおむつ連続体１０を、両ロール２０１，２０２の間に通過させ、カットロール２０１の刃２０３で、最外方シール線４１の前駆領域４１’を搬送方向Ｅに交差する方向に二等分して、おむつ１Ａの個々にカットする。このようにして、最外方シール線４１及び残りの連続シール線４２を有する一対のサイドシール部４，４を備える外装体３を具備するパンツ型使い捨ておむつ１Ａを連続的に製造する。   The cutting device 200 includes a cut roll 201 and an anvil roll 202. The cutting roll 201 is provided with a large number of blades 203 on its peripheral surface. The blade 203 is formed over the entire length of the cut roll 201 in the roll axis direction. The cut roll 201 and the anvil roll 202 are arranged so as to have a predetermined clearance so that their axial directions are parallel to each other. Then, using the cutting device 200, the diaper continuous body 10 in which the precursor region 41 ′ of the outermost seal line 41 and the continuous seal line 42 described above are intermittently disposed is passed between both rolls 201 and 202. Then, the blade 203 of the cut roll 201 bisects the precursor region 41 ′ of the outermost seal line 41 in the direction intersecting the transport direction E, and cuts each of the diapers 1 </ b> A. In this way, the pants-type disposable diaper 1A including the exterior body 3 including the pair of side seal portions 4 and 4 having the outermost seal line 41 and the remaining continuous seal line 42 is continuously manufactured.

以上のとおりの製造方法によれば、サイドシール部４の最外方シール線４１は、おむつ１Ａにおいては、両外層体３，３を加熱圧搾して形成された間欠的に延びる面状のヒートシール部からなる。また、サイドシール部４を構成する最外方シール線４１を除く残りの連続シール線４２は、おむつ１Ａにおいては、両外層体３，３を溶融接合して形成された連続的に延びる線状の融着部からなる。ここで、線状の融着部からなるとは、線状の融着部で形成されていればよく、レーザー光によるシール部のみからなる場合と一部においてヒートシール部を有する場合をも包含する。   According to the manufacturing method as described above, the outermost seal line 41 of the side seal portion 4 is an intermittently extending planar heat formed by heating and compressing the outer layer bodies 3 and 3 in the diaper 1A. It consists of a seal part. Further, the remaining continuous seal line 42 excluding the outermost seal line 41 constituting the side seal portion 4 is a linearly extending line formed by melting and joining the outer layer bodies 3 and 3 in the diaper 1A. The fusion part. Here, the term “consisting of a linear fused part” is sufficient if it is formed of a linear fused part, and includes cases where only a seal part is formed by laser light and a part having a heat seal part. .

レーザー光について説明すると、おむつ連続体１０（帯状の外装体３）に照射するレーザー光としては、外装体３を構成するシート（外層シート３１及び内層シート３２）に吸収され該シートを発熱させる波長のレーザー光を用いる。ここで、「外装体を構成するシート」は、外装体の一方の面（支持部材２１との当接面）を構成するシート（例えば前述した態様では外層シート３１）に限定されず、外装体を構成するシートであればどれであってもよい。外装体に照射するレーザー光が、該外装体を構成する個々のシートについて、該シートに吸収されて該シートを発熱させる波長であるか否かは、シートの材質と、使用するレーザー光の波長との関係で決まる。外装体を構成するシートが、使い捨ておむつや生理用ナプキン等の吸収性物品（サニタリー用品）の製造に汎用される合成樹脂製の不織布やフィルムである場合、レーザー光としては、ＣＯ2レーザー、ＹＡＧレーザー、ＬＤレーザー（半導体レーザー）、ＹＶＯ４レーザー、ファイバーレーザー等を用いることが好ましい。また、外装体を構成するシートが、合成樹脂として、ポリエチレン、ポリエチレンテレフタレート、ポリプロピレン等を含む場合、該シートに吸収され該シートを良好に発熱させ得る波長としては、例えば、８．０μｍ以上１５．０μｍ以下を用いることが好ましく、高出力のレーザー装置が存在するＣＯ2レーザーの発振波長の９．０μｍ以上１１．０μｍ以下を用いることが特に好ましい。レーザー光のスポット径、レーザー出力等は、外装体３を構成するシートの材質や厚み等を考慮して適宜選択することができる。 Explaining the laser beam, the wavelength of the laser beam irradiated to the diaper continuous body 10 (band-shaped outer package 3) is absorbed by the sheets (outer layer sheet 31 and inner layer sheet 32) constituting the outer package 3 and generates heat. The laser beam is used. Here, the “sheet constituting the exterior body” is not limited to the sheet (for example, the outer layer sheet 31 in the above-described embodiment) constituting one surface of the exterior body (the contact surface with the support member 21). Any sheet may be used as long as it constitutes. Whether or not the laser light applied to the exterior body is a wavelength that is absorbed by the sheet and generates heat for the individual sheets constituting the exterior body depends on the material of the sheet and the wavelength of the laser light to be used. It depends on the relationship. When the sheet constituting the outer package is a non-woven fabric or film made of synthetic resin that is widely used in the manufacture of absorbent articles (sanitary products) such as disposable diapers and sanitary napkins, the laser beam may be CO 2 laser, YAG It is preferable to use a laser, an LD laser (semiconductor laser), a YVO4 laser, a fiber laser, or the like. Moreover, when the sheet | seat which comprises an exterior body contains polyethylene, a polyethylene terephthalate, a polypropylene etc. as a synthetic resin, as a wavelength which can be absorbed by this sheet | seat and can make this sheet | seat generate | occur | produce favorably, 8.0 micrometers or more and 15. It is preferable to use 0 μm or less, and it is particularly preferable to use an oscillation wavelength of 9.0 μm or more and 11.0 μm or less of a CO 2 laser in which a high-power laser device exists. The spot diameter of laser light, laser output, and the like can be appropriately selected in consideration of the material, thickness, and the like of the sheet constituting the exterior body 3.

以上、本発明をその実施形態に基づいて説明したが、本発明は、上述した実施形態に制限されることなく適宜変更が可能である。例えば、帯状の外装体（シート積層体）は、図９（ａ）に示す如き４枚のシートが重ねられたもののほか、２枚、３枚又は５枚以上のシートが重ねられたものであってもよい。   As mentioned above, although this invention was demonstrated based on the embodiment, this invention can be suitably changed without being restrict | limited to embodiment mentioned above. For example, a strip-shaped outer package (sheet laminate) is a stack of four sheets as shown in FIG. 9A, or two, three, or five or more sheets. May be.

また、前記実施形態（態様）における外装体３は、図２に示すとおり、腹側領域Ａと背側領域Ｂとで分割されずに、腹側領域Ａ、股下領域Ｃ及び背側領域Ｂにわたる砂時計状等の連続した形状を有していたが、本発明における外装体は、このような連続した形状に制限されず、例えば、着用者の腹側（前側）に配される腹側シート部材と、着用者の背側（後側）に配される背側シート部材とに分割されており、吸収性本体がこれら両シート部材に架け渡して固定されていてもよい。このような分割タイプの外装体を具備するパンツ型使い捨ておむつの製造方法における前記重合加圧工程は、吸収性本体が固定された帯状の外装体の前身頃側（帯状の腹側シート部材）と後身頃側（帯状の背側シート部材）とが重ね合わされた構成を有する帯状の外装体におけるサイドシール部の形成予定部位を加圧状態にする。   Moreover, the exterior body 3 in the said embodiment (aspect) is not divided | segmented into the ventral region A and the dorsal region B, but extends over the ventral region A, the crotch region C, and the dorsal region B as shown in FIG. Although it had a continuous shape such as an hourglass shape, the exterior body in the present invention is not limited to such a continuous shape, for example, an abdominal sheet member disposed on the abdomen side (front side) of the wearer And it is divided | segmented into the back | dorsal sheet | seat member distribute | arranged to a wearer's back | dorsal side (rear side), and an absorptive main body may be bridge | crossed and fixed to these both sheet | seat members. In the method for producing a pants-type disposable diaper having such a split-type exterior body, the polymerization pressurizing step includes a front body side (a belt-like stomach side sheet member) of the belt-like exterior body to which the absorbent main body is fixed. A site where the side seal portion is to be formed in the belt-shaped exterior body having a configuration in which the back body side (band-shaped backside sheet member) is superimposed is brought into a pressurized state.

おむつ１Ａの備える連続シール線４２が有するシール強度の強い部分４２ｓと弱い部分４２ｗとは、シール強度の弱い部分４２ｗに対応する部分を相対的に幅の狭い矩形形状にし、シール強度の強い部分４２ｓに対応する部分を相対的に幅の広い矩形形状にした開口部２７を有する支持部材２１を用いて、レーザー式接合装置２０によって形成されていたが、相対的に幅の狭い連続的に延びる開口部２７を有する支持部材２１を用いて、レーザー式接合装置２０によって弱い部分４２ｗを形成し、相対的に幅の広い部分をエンボス装置１００によってヒートシールしシール強度の強い部分４２ｓを形成してもよい。   The portion 42s having a strong seal strength and the portion 42w having a weak seal strength included in the continuous seal line 42 included in the diaper 1A are formed into a rectangular shape having a relatively narrow width corresponding to the portion 42w having a low seal strength, and a portion 42s having a high seal strength. Is formed by the laser-type bonding apparatus 20 using the support member 21 having the opening portion 27 having a relatively wide rectangular shape at a portion corresponding to the above, but the opening continuously extending relatively narrow. Even if the weak member 42w is formed by the laser-type bonding apparatus 20 using the support member 21 having the portion 27 and the relatively wide part is heat-sealed by the embossing device 100, the part 42s having a high sealing strength is formed. Good.

また、本発明におけるパンツ型着用物品は、パンツ型使い捨ておむつに限られず、パンツ型の生理用ナプキンであってもよい。   The pants-type wearing article in the present invention is not limited to a pants-type disposable diaper, and may be a pants-type sanitary napkin.

上述した一の実施形態における説明省略部分及び一の実施形態のみが有する要件は、それぞれ他の実施形態に適宜適用することができ、また、各実施形態における要件は、適宜、実施形態間で相互に置換可能である。   The description omitted in one embodiment described above and the requirements of only one embodiment can be applied to other embodiments as appropriate, and the requirements in each embodiment can be appropriately changed between the embodiments. Can be substituted.

前述した本発明の実施形態（態様）に関し、更に以下のパンツ型着用物品を開示する。   The following pants-type wearing articles are further disclosed with respect to the above-described embodiment (aspect) of the present invention.

＜１＞
外装体と、外装体の内面側に固定されている吸収性本体とを備え、外装体は、着用者の腹側に配される腹側領域と、背側に配される背側領域とを有し、腹側領域の両側縁部と背側領域の両側縁部とが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型着用吸収性物品であって、
前記一対のサイドシール部の内の少なくとも一方は、互いに離間して縦方向に延びる複数本のシール線を有しており、
前記複数本のシール線の内、最も横方向外方側に位置する最外方シール線のシール強度が最も強く、
前記最外方シール線以外の他の前記シール線は、前記ウエスト開口部から前記レッグ開口部に亘って縦方向に連続して延びる連続シール線である、パンツ型着用吸収性物品。 <1>
An exterior body and an absorbent main body fixed to the inner surface side of the exterior body, and the exterior body includes a ventral region disposed on the wearer's ventral side and a dorsal region disposed on the back side. A pants-type wearing absorbent article having a pair of side seals, a waist opening and a pair of leg openings formed by joining both side edges of the ventral region and both side edges of the back region; There,
At least one of the pair of side seal portions has a plurality of seal lines that are separated from each other and extend in the vertical direction,
Among the plurality of seal wires, the seal strength of the outermost seal wire located on the outermost side in the lateral direction is the strongest,
The pants-type wearable absorbent article, wherein the seal line other than the outermost seal line is a continuous seal line that extends continuously in the vertical direction from the waist opening to the leg opening.

＜２＞
前記連続シール線は、その幅が、前記最外方シール線における最も幅狭の部分の幅よりも狭い前記＜１＞に記載のパンツ型着用吸収性物品。
＜３＞
前記最外方シール線の幅（Ｗ３）は、前記連続シール線におけるシール強度の強い部分の幅（Ｗ１）の１.１倍以上５倍以下であることが好ましく、１．２倍以上３倍以下であることが更に好ましい前記＜１＞又は＜２＞に記載のパンツ型着用吸収性物品。
＜４＞
前記連続シール線は、シール強度の強い部分と弱い部分とを有しており、該連続シール線における前記ウエスト開口部側の端部及び前記レッグ開口部側の端部の少なくとも一方が、シール強度の弱い部分である前記＜１＞〜＜３＞の何れか１に記載のパンツ型着用吸収性物品。
＜５＞
前記連続シール線における前記ウエスト開口部側の端部及び前記レッグ開口部側の端部それぞれが、シール強度の弱い部分となっている前記＜１＞〜＜４＞の何れか１に記載のパンツ型着用吸収性物品。
＜６＞
前記連続シール線におけるシール強度の強い部分は、その幅（Ｗ１）が、該連続シール線におけるシール強度の弱い部分の幅（Ｗ２）よりも広くなっている前記＜１＞〜＜５＞の何れか１に記載のパンツ型着用吸収性物品。
＜７＞
前記連続シール線におけるシール強度の強い部分の幅（Ｗ１）は、前記連続シール線におけるシール強度の弱い部分の幅（Ｗ２）の１.５倍以上５０倍以下であることが好ましく、５倍以上３０倍以下であることが更に好ましい前記＜１＞〜＜６＞の何れか１に記載のパンツ型着用吸収性物品。
＜８＞
前記連続シール線におけるシール強度の強い部分の幅（Ｗ１）は、２ｍｍ以上８ｍｍ以下であることが好ましく、３ｍｍ以上５ｍｍ以下であることが更に好ましい前記＜１＞〜＜７＞の何れか１に記載のパンツ型着用吸収性物品。
＜９＞
前記連続シール線におけるシール強度の弱い部分の幅（Ｗ２）は、０．１ｍｍ以上３ｍｍ以下であることが好ましく、０．５ｍｍ以上２ｍｍ以下であることが更に好ましい前記＜１＞〜＜８＞の何れか１に記載のパンツ型着用吸収性物品。
＜１０＞
前記最外方シール線のシール強度は、前記連続シール線のシール強度（前記連続シール線におけるシール強度の強い部分）の１.１倍以上５.０倍以下であることが好ましく、１．２倍以上３．０倍以下であることが更に好ましい前記＜１＞〜＜９＞の何れか１に記載のパンツ型着用吸収性物品。 <2>
The pants-type wearing absorbent article according to <1>, wherein the continuous seal line has a width narrower than a width of a narrowest portion of the outermost seal line.
<3>
The width (W3) of the outermost seal line is preferably 1.1 times or more and 5 times or less, and 1.2 times or more and 3 times the width (W1) of the strong seal portion of the continuous seal line. The pants-type wearing absorbent article according to <1> or <2>, which is more preferably as follows.
<4>
The continuous seal line has a strong seal portion and a weak seal portion, and at least one of the end on the waist opening side and the end on the leg opening side of the continuous seal wire has a seal strength. The underpants-type wearing absorbent article according to any one of the above items <1> to <3>, which is a weak part of the above.
<5>
The pants according to any one of <1> to <4>, wherein each of the end portion on the waist opening side and the end portion on the leg opening portion side of the continuous seal line is a portion having a weak seal strength. Mold-wearing absorbent article.
<6>
Any one of <1> to <5>, wherein the width (W1) of the portion with high seal strength in the continuous seal wire is wider than the width (W2) of the portion with low seal strength in the continuous seal wire. A pants-type wearing absorbent article according to claim 1.
<7>
The width (W1) of the portion with high seal strength in the continuous seal line is preferably 1.5 times or more and 50 times or less than the width (W2) of the portion with low seal strength in the continuous seal line. The pants-type wearing absorbent article according to any one of the above items <1> to <6>, which is more preferably 30 times or less.
<8>
The width (W1) of the strong sealing portion in the continuous seal line is preferably 2 mm or more and 8 mm or less, more preferably 3 mm or more and 5 mm or less, and any one of the above items <1> to <7> The pants-type wearing absorbent article as described.
<9>
The width (W2) of the weak seal strength portion in the continuous seal line is preferably 0.1 mm or more and 3 mm or less, more preferably 0.5 mm or more and 2 mm or less. <1> to <8> The pants-type wearing absorbent article according to any one of the above.
<10>
The seal strength of the outermost seal wire is preferably 1.1 times or more and 5.0 times or less than the seal strength of the continuous seal wire (the portion with the strong seal strength in the continuous seal wire), 1.2 The pants-type wearing absorbent article according to any one of the above items <1> to <9>, which is more preferably from twice to 3.0 times.

＜１１＞
前記最外方シール線は、腹側領域側の前記外装体及び背側領域側の前記外装体を重ね合わせた状態で、両外層体を間欠的に加熱圧着して形成された面状のヒートシール部からなり、
前記連続シール線は、腹側領域側の外装体及び背側領域側の外装体を重ね合わせた状態で、縦方向に沿って両外層体を連続的に溶融接合して形成された線状の融着部からなる前記＜１＞〜＜１０＞の何れか１に記載のパンツ型着用吸収性物品。
＜１２＞
前記最外方シール線と前記連続シール線との間は、腹側領域側の前記外装体及び背側領域側の前記外装体が重ね合わさっただけで、接合されていない非接合状態となっている前記＜１＞〜＜１１＞の何れか１に記載のパンツ型着用吸収性物品。
＜１３＞
前記最外方シール線と残りの前記連続シール線との間隔は、２ｍｍ以上３０ｍｍ以下であることが好ましく、５ｍｍ以上１５ｍｍ以下であることが更に好ましい前記＜１＞〜＜１２＞の何れか１に記載のパンツ型着用吸収性物品。
＜１４＞
前記最外方シール線は、重ね合わされた状態の前記外装体の縁部における横方向Ｘ外側縁に沿って、該縁部どうしが一体的に加熱圧着圧搾化された圧着部と、該縁部どうしが圧着圧搾化されていない非圧着圧搾部とが交互に配されて、縦方向Ｙに間欠的に延びている前記＜１＞〜＜１３＞の何れか１に記載のパンツ型着用吸収性物品。
＜１５＞
前記各圧搾部は、同じ幅に形成されている前記＜１＞〜＜１４＞の何れか１に記載のパンツ型着用吸収性物品。
＜１６＞
前記シール線の数は、２本以上、４本以下である前記＜１＞〜＜１５＞の何れか１に記載のパンツ型着用吸収性物品。
＜１７＞
一対の前記サイドシール部の内の一方の前記サイドシール部において、互いに離間する３本の前記シール線を有している前記＜１＞〜＜１６＞の何れか１に記載のパンツ型着用吸収性物品。 <11>
The outermost seal line is a sheet-like heat formed by intermittently heat-pressing both outer layer bodies in a state where the outer body on the ventral region side and the outer body on the back region side are overlapped. It consists of a seal part,
The continuous seal line is a linear shape formed by continuously melting and joining both outer layer bodies along the vertical direction in a state where the exterior body on the ventral region side and the exterior body on the back region side are overlapped. The pants-type wearing absorbent article according to any one of the above items <1> to <10>, comprising a fused part.
<12>
Between the outermost seal line and the continuous seal line, the exterior body on the ventral region side and the exterior body on the back region side are overlapped, and are not joined. The pants-type wearing absorbent article according to any one of <1> to <11>.
<13>
The interval between the outermost seal line and the remaining continuous seal line is preferably 2 mm or more and 30 mm or less, more preferably 5 mm or more and 15 mm or less, and any one of the above items <1> to <12> A pants-type wearing absorbent article according to 1.
<14>
The outermost seal line includes a crimped portion in which the edges are integrally heat-pressed along the lateral X outer edge of the edge of the outer package in a superimposed state, and the edge The pants-type wearing absorbency according to any one of the above items <1> to <13>, in which the non-compressed compressed parts that are not compressed and compressed are alternately arranged and intermittently extend in the longitudinal direction Y Goods.
<15>
Each said pressing part is an underpants type wearable absorbent article of any one of said <1>-<14> currently formed in the same width | variety.
<16>
The number of the said seal lines is an underpants type wearable absorbent article any one of said <1>-<15> which is 2 or more and 4 or less.
<17>
The pants-type wear absorption according to any one of <1> to <16>, wherein the one side seal part of the pair of side seal parts has the three seal wires spaced apart from each other. Sex goods.

１ パンツ型使い捨ておむつ（パンツ型着用物品）
Ａ 腹側領域
Ｂ 背側領域
Ｆ 前身頃
Ｒ 後身頃
２ 吸収性本体
３ 外装体
３１ 外層シート
３２ 内層シート
４ サイドシール部
４１ 最外方シール線（シール線）
４２,４３ 連続シール線（シール線）
４２ｗ シール強度の弱い部分
４２ｓ シール強度の強い部分
１０ おむつ連続体（帯状の外装体）
２０ レーザー式接合装置
２１，２１Ａ，２１Ｂ 支持部材
２６ ベルト式加圧装置
２７ 開口部（光通過部） 1 Pants-type disposable diaper (pants-type wearing article)
A ventral region B dorsal region F front body R back body 2 absorbent main body 3 exterior body 31 outer layer sheet 32 inner layer sheet 4 side seal part 41 outermost seal line (seal line)
42,43 Continuous seal wire (seal wire)
42w Part with weak seal strength 42s Part with strong seal strength 10 Diaper continuum (band-shaped exterior)
20 Laser type joining device 21, 21A, 21B Support member 26 Belt type pressurizing device 27 Opening (light passage part)

Claims (4)

外装体と、外装体の内面側に固定されている吸収性本体とを備え、外装体は、着用者の腹側に配される腹側領域と、背側に配される背側領域とを有し、腹側領域の両側縁部と背側領域の両側縁部とが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型着用吸収性物品であって、
前記一対のサイドシール部の内の少なくとも一方は、互いに離間して縦方向に延びる複数本のシール線を有しており、
前記複数本のシール線の内、最も横方向外方側に位置する最外方シール線のシール強度が最も強く、
前記最外方シール線以外の他の前記シール線は、前記ウエスト開口部から前記レッグ開口部に亘って縦方向に連続して延びる連続シール線である、パンツ型着用吸収性物品。 An exterior body and an absorbent main body fixed to the inner surface side of the exterior body, and the exterior body includes a ventral region disposed on the wearer's ventral side and a dorsal region disposed on the back side. A pants-type wearing absorbent article having a pair of side seals, a waist opening and a pair of leg openings formed by joining both side edges of the ventral region and both side edges of the back region; There,
At least one of the pair of side seal portions has a plurality of seal lines that are separated from each other and extend in the vertical direction,
Among the plurality of seal wires, the seal strength of the outermost seal wire located on the outermost side in the lateral direction is the strongest,
The pants-type wearable absorbent article, wherein the seal line other than the outermost seal line is a continuous seal line that extends continuously in the vertical direction from the waist opening to the leg opening. 前記連続シール線は、その幅が、前記最外方シール線における最も幅狭の部分の幅よりも狭い請求項１に記載のパンツ型吸収性物品。   The pants-type absorbent article according to claim 1, wherein the continuous seal line has a width narrower than a narrowest portion of the outermost seal line. 前記連続シール線は、シール強度の強い部分と弱い部分とを有しており、該連続シール線における前記ウエスト開口部側の端部及び前記レッグ開口部側の端部の少なくとも一方が、シール強度の弱い部分である請求項１又は２に記載のパンツ型吸収性物品。   The continuous seal line has a strong seal portion and a weak seal portion, and at least one of the end on the waist opening side and the end on the leg opening side of the continuous seal wire has a seal strength. The underpants-type absorbent article according to claim 1, wherein the pants-type absorbent article is a weak portion. 前記最外方シール線は、腹側領域側の前記外装体及び背側領域側の前記外装体を重ね合わせた状態で、両外層体を間欠的に加熱圧搾して形成された面状のヒートシール部からなり、
前記連続シール線は、腹側領域側の外装体及び背側領域側の外装体を重ね合わせた状態で、縦方向に沿って両外層体を連続的に溶融接合して形成された線状の融着部からなる請求項１ないし３の何れか１項に記載のパンツ型吸収性物品。
The outermost seal line is a sheet-like heat formed by intermittently heating and squeezing both outer layer bodies in a state where the outer body on the ventral region side and the outer body on the back region side are overlapped. It consists of a seal part,
The continuous seal line is a linear shape formed by continuously melting and joining both outer layer bodies along the vertical direction in a state where the exterior body on the ventral region side and the exterior body on the back region side are overlapped. The underpants-type absorbent article according to any one of claims 1 to 3, comprising a fused part.
JP2013237983A 2013-11-18 2013-11-18 Pants-type absorbent article Active JP6195302B2 (en)

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JP2898533B2 (en) * 1994-02-21 1999-06-02 トーヨー衛材株式会社 Disposable pants
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