JP2023149951A - Fitting tool and bag body having the same - Google Patents

Fitting tool and bag body having the same Download PDF

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JP2023149951A
JP2023149951A JP2022058786A JP2022058786A JP2023149951A JP 2023149951 A JP2023149951 A JP 2023149951A JP 2022058786 A JP2022058786 A JP 2022058786A JP 2022058786 A JP2022058786 A JP 2022058786A JP 2023149951 A JP2023149951 A JP 2023149951A
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base material
point
side fitting
reference line
straight line
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直斗 田上
Naoto Tagami
新 ▲高▼川
Arata Takagawa
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Takiron Co Ltd
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Takiron Co Ltd
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Priority to JP2022058786A priority Critical patent/JP2023149951A/en
Priority to PCT/JP2023/010743 priority patent/WO2023189771A1/en
Priority to TW112109921A priority patent/TW202340048A/en
Publication of JP2023149951A publication Critical patent/JP2023149951A/en
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/16—Interlocking member having uniform section throughout the length of the stringer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Slide Fasteners (AREA)

Abstract

To provide a bag body with a fitting tool and a fitting tool in which delamination is less likely to occur and curl generation is suppressed.SOLUTION: There is provided a fitting tool in which a male side fitting part of a belt-shaped male side fitting member, and a female side fitting part of a belt-shaped female side fitting member are detachably fitted, a first substrate of the male side fitting member and a second substrate of the female side fitting member each have: a main layer; a seal layer; and an intermediate layer provided between the main layer and the seal layer. The intermediate layer is provided on each of the first and second substrates, in each of both sides of a region where the male side fitting part exists, and a region where the female side fitting part exists, in a width direction. A curl angle θ1 of the male side fitting member and a curl angle θ2 of the female side fitting member are 0.5° or greater and 20° or smaller, and a position D3 of a terminal of the male side fitting member, and a position D5 of a terminal of the female side fitting member are -1.8 mm or greater and +0.75 mm or smaller.SELECTED DRAWING: Figure 2

Description

本発明は、嵌合具、とりわけ層間剥離が生じにくく、成形後にカールが発生しにくい嵌合具、及びそれを用いた嵌合具付き袋体に関する。 The present invention relates to a fitting, particularly a fitting that is less likely to cause delamination and less likely to curl after molding, and a bag with a fitting using the same.

食品、薬品、雑貨等の様々な分野において、袋本体の開口部近傍の内面に、開口部を開閉自在に封じる嵌合具が取り付けられた嵌合具付き袋体が広く用いられている。
嵌合具には、製袋時に袋体の外観を損ねないように接着できることが求められる。従来の嵌合具においては、硬度が高い樹脂層を含む基材を用いることにより、製袋時にしわが発生して外観が悪くなることを抑制している。
特許文献１には、ポリエチレン又はポリプロピレン樹脂フィルムからなる表面層及び裏面層と、ナイロン又はポリエステル樹脂フィルムからなる中間層とを含む３層構成の基材を備えた嵌合具が開示されている。 BACKGROUND ART In various fields such as food, medicine, miscellaneous goods, etc., bags with fittings are widely used, in which fittings are attached to the inner surface of the bag body near the opening to open and close the opening.
The fitting tool is required to be capable of adhering so as not to damage the appearance of the bag during bag manufacturing. In conventional fittings, by using a base material containing a resin layer with high hardness, it is possible to suppress the occurrence of wrinkles during bag manufacturing and the deterioration of the appearance.
Patent Document 1 discloses a fitting tool having a three-layer base material including a front layer and a back layer made of a polyethylene or polypropylene resin film, and an intermediate layer made of a nylon or polyester resin film.

特開平０６－１２２４６０号公報Japanese Patent Application Publication No. 06-122460

多層構造を有する嵌合具は、層間剥離の発生を充分に抑制することが重要である。また、成形後の嵌合具にカールが発生すると袋本体に接着することが困難になる。しかし、特許文献１では、層間剥離を抑制しつつ、カールの発生を抑制することについて検討されていない。 For fittings having a multilayer structure, it is important to sufficiently suppress the occurrence of delamination. Furthermore, if the fitting tool curls after being molded, it becomes difficult to adhere it to the bag body. However, Patent Document 1 does not consider suppressing curling while suppressing delamination.

本発明は、層間剥離が生じにくく、カールの発生が抑制された嵌合具、及び前記嵌合具を用いた嵌合具付き袋体を提供することを目的とする。 An object of the present invention is to provide a fitting tool that is less likely to cause delamination and suppressed curling, and a bag with a fitting tool using the fitting tool.

本発明は、以下の態様を含む。
［１］帯状の第１基材の表面に長手方向に沿って雄側嵌合部が設けられた雄側嵌合部材と、帯状の第２基材の表面に長手方向に沿って雌側嵌合部が設けられた雌側嵌合部材とを備え、前記雄側嵌合部と前記雌側嵌合部が着脱自在に嵌合する嵌合具であって、
前記第１基材及び前記第２基材はそれぞれ、メイン層と、前記メイン層の前記雄側嵌合部及び前記雌側嵌合部とは反対側に設けられたシール層と、前記メイン層と前記シール層の間に設けられた中間層と、を備え、
前記中間層が、前記第１基材及び前記第２基材のそれぞれにおいて、その幅方向における前記雄側嵌合部及び前記雌側嵌合部が存在する領域の両側の領域にそれぞれ配置されており、
嵌合状態の前記嵌合具を長手方向と垂直に切断した切断面において、下記方法（１）により求められる前記第１基材のカール角度θ１と、下記方法（２）により求められる前記第２基材のカール角度θ２が、いずれも０．５°以上２０°以下であり、
嵌合状態の前記嵌合具を長手方向と垂直に切断した切断面において、下記方法（３）により求められる前記雄側嵌合部材の末端の位置Ｄ３と、下記方法（４）により求められる前記雌側嵌合部材の末端の位置Ｄ５が、いずれも－１．８ｍｍ以上＋０．７５ｍｍ以下である、嵌合具。
方法（１）：
前記雄側嵌合部の幅方向の中心線を直線ｋ１とし、前記第１基材の前記雄側嵌合部が設けられた表面の反対面と前記直線ｋ１との交点を点Ｏ１とし、前記点Ｏ１を通る前記直線ｋ１に直交する直線を基準線ｋ２とする。
前記第１基材の前記直線ｋ１の一方の端部側における、前記第１基材の面上で前記基準線ｋ２との距離が最大となる位置を点Ａ１とする。前記第１基材を前記基準線ｋ２に沿って直線状に延ばした状態の前記第１基材における、前記基準線ｋ２上の前記一方の端部側の端の位置を点Ｃ１とする。前記点Ａ１と前記点Ｏ１を通る直線と、前記基準線ｋ２がなす角度θＡ１（基準線からカールしている方向への角度）を測定する。
前記第１基材の前記直線ｋ１の他方の端部側における、前記第１基材の面上で前記基準線ｋ２との距離が最大となる位置を点Ｂ１とする。前記第１基材を前記基準線ｋ２に沿って直線状に延ばした状態の前記第１基材における、前記基準線ｋ２上の前記他方の端部側の端の位置を点Ｄ１とする。前記点Ｂ１と前記点Ｏ１を通る直線と、前記基準線ｋ２がなす角度θＢ１（基準線からカールしている方向への角度）を測定する。
角度θＡ１と角度θＢ１の平均をカール角度θ１とする。
方法（２）：
前記雌側嵌合部の幅方向の中心線を直線ｋ３とし、前記第２基材の前記雌側嵌合部が設けられた表面の反対面と前記直線ｋ３との交点を点Ｏ２とし、前記点Ｏ２を通る前記直線ｋ３に直交する直線を基準線ｋ４とする。
前記第２基材の前記直線ｋ３の一方の端部側における、前記第２基材の面上で前記基準線ｋ４との距離が最大となる位置を点Ａ２とする。前記第２基材を前記基準線ｋ４に沿って直線状に延ばした状態の前記第２基材における、前記基準線ｋ４上の前記一方の端部側の端の位置を点Ｃ２とする。前記点Ａ２と前記点Ｏ２を通る直線と、前記基準線ｋ４がなす角度θＡ２（基準線からカールしている方向への角度）を測定する。
前記第２基材の前記直線ｋ３の他方の端部側における、前記第２基材の面上で前記基準線ｋ４との距離が最大となる位置を点Ｂ２とする。前記第２基材を前記基準線ｋ４に沿って直線状に延ばした状態の前記第２基材における、前記基準線ｋ４上の前記他方の端部側の端の位置を点Ｄ２とする。前記点Ｂ２と前記点Ｏ２を通る直線と、前記基準線ｋ４がなす角度θＢ２（基準線からカールしている方向への角度）を測定する。
角度θＡ２と角度θＢ２の平均をカール角度θ２とする。
方法（３）：
前記雄側嵌合部の幅方向の中心線を直線ｋ１とし、前記第１基材の前記雄側嵌合部が設けられた表面の反対面と前記直線ｋ１との交点を点Ｏ１とし、前記点Ｏ１を通る前記直線ｋ１に直交する直線を基準線ｋ２とする。
前記第１基材の前記直線ｋ１の一方の端部側で、前記雄側嵌合部材の末端における前記基準線ｋ２から最も離れた位置を点Ａ３とする。前記点Ａ３と前記基準線ｋ２との距離ＤＡ３（ｍｍ）を測定する（ただし、前記基準線ｋ２に対し、前記雄側嵌合部が位置する領域を＋（プラス）とし、前記基準線ｋ２に対し、前記雄側嵌合部の位置する領域の反対側の領域を－（マイナス）とする。）。
前記第１基材の前記直線ｋ１の他方の端部側で、前記雄側嵌合部材の末端における前記基準線ｋ２から最も離れた位置を点Ｂ３とする。前記点Ｂ３と前記基準線ｋ２との距離ＤＢ３（ｍｍ）を測定する（ただし、プラス、マイナスは前記距離ＤＡ３と同様である。）。
前記距離ＤＡ３と前記距離ＤＢ３の平均を求め、その平均値を前記基準線ｋ２に対する前記雄側嵌合部材の末端の位置Ｄ３とする。
方法（４）：
前記雌側嵌合部の幅方向の中心線を直線ｋ３とし、前記第２基材の前記雌側嵌合部が設けられた表面の反対面と前記直線ｋ３との交点を点Ｏ２とし、前記点Ｏ２を通る前記直線ｋ３に直交する直線を基準線ｋ４とする。
前記第２基材の前記直線ｋ３の一方の端部側で、前記雌側嵌合部材の末端における前記基準線ｋ４から最も離れた位置を点Ａ５とする。前記点Ａ５と前記基準線ｋ４との距離ＤＡ５（ｍｍ）を測定する（ただし、前記基準線ｋ４に対し、前記雌側嵌合部が位置する領域を＋（プラス）とし、前記基準線ｋ４に対し、前記雌側嵌合部の位置する領域の反対側の領域を－（マイナス）とする。）。
前記第２基材の前記直線ｋ３の他方の端部側で、前記雌側嵌合部材の末端における前記基準線ｋ４から最も離れた位置を点Ｂ５とする。前記点Ｂ５と前記基準線ｋ４との距離ＤＢ５（ｍｍ）を測定する（ただし、プラス、マイナスは前記距離ＤＡ５と同様である。）。
前記距離ＤＡ５と前記距離ＤＢ５の平均を求め、その平均値を前記基準線ｋ４に対する前記雌側嵌合部材の末端の位置Ｄ５とする。
［２］前記シール層が、前記第１基材及び前記第２基材のそれぞれにおいて、その幅方向における前記雄側嵌合部及び前記雌側嵌合部が存在する領域の両側の領域にそれぞれ配置されている、［１］に記載の嵌合具。
［３］嵌合状態の前記嵌合具を長手方向と垂直に切断した切断面において、前記方法（３）により求められる前記雄側嵌合部材の末端の位置Ｄ３と、前記方法（４）により求められる前記雌側嵌合部材の末端の位置Ｄ５が、いずれも－１．５ｍｍ以上－０．０１ｍｍ以下である、［１］又は［２］に記載の嵌合具。
［４］［１］～［３］のいずれかに記載の嵌合具と、内容物を収容する袋本体と、を備え、
前記嵌合具が前記袋本体の内面に取り付けられている嵌合具付き袋体。 The present invention includes the following aspects.
[1] A male side fitting member in which a male side fitting part is provided along the longitudinal direction on the surface of a strip-shaped first base material, and a female side fitting member provided on the surface of a strip-shaped second base material along the longitudinal direction. A fitting tool comprising a female side fitting member provided with a mating portion, the male side fitting portion and the female side fitting portion removably fitting together,
The first base material and the second base material each include a main layer, a seal layer provided on the side opposite to the male side fitting part and the female side fitting part of the main layer, and the main layer. and an intermediate layer provided between the seal layer,
The intermediate layer is disposed in each of the first base material and the second base material in regions on both sides of a region in the width direction where the male side fitting part and the female side fitting part are present. Ori,
On a cut surface obtained by cutting the fitting tool in the fitted state perpendicular to the longitudinal direction, the curl angle θ 1 of the first base material determined by the following method (1) and the curl angle θ 1 determined by the following method (2) The curl angle θ 2 of the two base materials is 0.5° or more and 20° or less,
In a cut plane obtained by cutting the fitting tool in the fitted state perpendicular to the longitudinal direction, the position D3 of the end of the male side fitting member is determined by the following method (3), and the position D3 is determined by the following method (4). A fitting tool, wherein the position D5 of the end of the female side fitting member is −1.8 mm or more and +0.75 mm or less.
Method (1):
The center line in the width direction of the male side fitting part is a straight line k1, the intersection of the opposite surface of the first base material on which the male side fitting part is provided and the straight line k1 is a point O1, A straight line passing through point O1 and perpendicular to the straight line k1 is defined as a reference line k2.
A point A1 is defined as a position on the surface of the first base material on one end side of the straight line k1 of the first base material, where the distance from the reference line k2 is maximum. The position of the end on the one end side of the reference line k2 of the first base material in a state where the first base material is linearly extended along the reference line k2 is defined as a point C1. The angle θ A1 (angle from the reference line in the curling direction) formed by the reference line k2 and the straight line passing through the point A1 and the point O1 is measured.
A point B1 is defined as a position on the surface of the first base material on the other end side of the straight line k1 of the first base material, where the distance from the reference line k2 is maximum. The position of the end on the other end side of the reference line k2 of the first base material in a state where the first base material is linearly extended along the reference line k2 is defined as a point D1. The angle θ B1 (angle from the reference line in the curling direction) formed by the reference line k2 and the straight line passing through the point B1 and the point O1 is measured.
The average of angle θ A1 and angle θ B1 is defined as curl angle θ 1 .
Method (2):
The center line in the width direction of the female side fitting part is defined as a straight line k3, the intersection of the opposite surface of the second base material to the surface on which the female side fitting part is provided and the straight line k3 is defined as a point O2, A straight line passing through point O2 and perpendicular to the straight line k3 is defined as a reference line k4.
A point A2 is a position on the surface of the second base material on one end side of the straight line k3 of the second base material, where the distance from the reference line k4 is maximum. The position of the end on the one end side of the reference line k4 in the second base material in a state where the second base material is linearly extended along the reference line k4 is defined as a point C2. An angle θ A2 (angle from the reference line in the curling direction) formed by a straight line passing through the point A2 and the point O2 and the reference line k4 is measured.
A point B2 is a position on the surface of the second base material on the other end side of the straight line k3 of the second base material, where the distance from the reference line k4 is maximum. The position of the end on the other end side of the reference line k4 of the second base material in a state where the second base material is linearly extended along the reference line k4 is defined as a point D2. An angle θ B2 (angle from the reference line in the curling direction) formed by the reference line k4 and a straight line passing through the point B2 and the point O2 is measured.
The average of angle θ A2 and angle θ B2 is defined as curl angle θ 2 .
Method (3):
The center line in the width direction of the male side fitting part is a straight line k1, the intersection of the opposite surface of the first base material on which the male side fitting part is provided and the straight line k1 is a point O1, A straight line passing through point O1 and perpendicular to the straight line k1 is defined as a reference line k2.
A point A3 is defined as a position farthest from the reference line k2 at the end of the male side fitting member on one end side of the straight line k1 of the first base material. Measure the distance D A3 (mm) between the point A3 and the reference line k2 (however, with respect to the reference line k2, the area where the male side fitting part is located is + (plus), and the distance D A3 (mm) is On the other hand, the area opposite to the area where the male side fitting part is located is defined as - (minus).
On the other end side of the straight line k1 of the first base material, the position farthest from the reference line k2 at the end of the male side fitting member is defined as point B3. A distance D B3 (mm) between the point B3 and the reference line k2 is measured (however, plus and minus are the same as the distance D A3 ).
The average of the distance D A3 and the distance D B3 is determined, and the average value is set as the position D 3 of the end of the male side fitting member with respect to the reference line k2.
Method (4):
The center line in the width direction of the female side fitting part is defined as a straight line k3, the intersection of the opposite surface of the second base material to the surface on which the female side fitting part is provided and the straight line k3 is defined as a point O2, A straight line passing through point O2 and perpendicular to the straight line k3 is defined as a reference line k4.
A point A5 is a position farthest from the reference line k4 at the end of the female fitting member on one end side of the straight line k3 of the second base material. Measure the distance D A5 (mm) between the point A5 and the reference line k4 (however, the area where the female side fitting part is located is + (plus) with respect to the reference line k4, and the distance D A5 (mm) is measured from the reference line k4. (On the other hand, the area opposite to the area where the female side fitting part is located is - (minus).)
On the other end side of the straight line k3 of the second base material, the position farthest from the reference line k4 at the end of the female side fitting member is defined as point B5. A distance D B5 (mm) between the point B5 and the reference line k4 is measured (however, plus and minus are the same as the distance D A5 ).
The average of the distance D A5 and the distance D B5 is determined, and the average value is set as the position D 5 of the end of the female side fitting member with respect to the reference line k4.
[2] The sealing layer is disposed in each of the first base material and the second base material in regions on both sides of the region where the male side fitting part and the female side fitting part are present in the width direction thereof. The fitting tool according to [1], which is arranged.
[3] The position D 3 of the end of the male side fitting member determined by the method ( 3 ) on a cut surface of the fitting tool in the fitted state perpendicular to the longitudinal direction, and the method (4) The fitting device according to [1] or [2], wherein the position D 5 of the end of the female side fitting member determined by the following is in the range of −1.5 mm or more and −0.01 mm or less.
[4] Comprising the fitting tool according to any one of [1] to [3] and a bag body that accommodates the contents,
A bag body with a fitting tool, wherein the fitting tool is attached to an inner surface of the bag main body.

本発明によれば、層間剥離が生じにくく、カールの発生が抑制された嵌合具、及び前記嵌合具を用いた嵌合具付き袋体を提供できる。 According to the present invention, it is possible to provide a fitting device in which delamination is less likely to occur and curling is suppressed, and a bag body with a fitting device using the fitting device.

図１は、実施形態の一例の嵌合具を示す概略斜視図である。FIG. 1 is a schematic perspective view showing a fitting tool according to an example of an embodiment. 図２は、図１の嵌合具を長手方向に垂直な面で切断した断面図である。FIG. 2 is a cross-sectional view of the fitting tool shown in FIG. 1 taken along a plane perpendicular to the longitudinal direction. 図３は、雄側嵌合部材のカール角度θ１を求める方法（１）を説明する断面図である。FIG. 3 is a cross-sectional view illustrating a method (1) for determining the curl angle θ 1 of the male side fitting member. 図４は、雌側嵌合部材のカール角度θ２を求める方法（２）を説明する断面図である。FIG. 4 is a cross-sectional view illustrating a method (2) for determining the curl angle θ 2 of the female side fitting member. 図５は、雄側嵌合部材の末端の位置Ｄ３を求める方法（３）を説明する断面図である。FIG. 5 is a cross-sectional view illustrating a method ( 3 ) for determining the position D3 of the end of the male side fitting member. 図６は、雌側嵌合部材の末端の位置Ｄ５を求める方法（４）を説明する断面図である。FIG. 6 is a cross-sectional view illustrating a method (4) for determining the position D5 of the distal end of the female side fitting member. 図７は、実施形態の一例の嵌合具付き袋体を示す概略正面図である。FIG. 7 is a schematic front view showing a bag with a fitting according to an example of the embodiment. 図８は、図７の嵌合具付き袋体の上部を開封した様子を示した斜視図である。FIG. 8 is a perspective view showing the bag with the fitting shown in FIG. 7 with its upper part unsealed.

［嵌合具］
以下、本発明の嵌合具について、一例を示し、図面に基づいて説明する。なお、以下の説明において例示される図の寸法等は一例であって、本発明はそれらに必ずしも限定されるものではなく、その要旨を変更しない範囲で適宜変更して実施することが可能である。 [Fitting tool]
Hereinafter, an example of the fitting tool of the present invention will be described based on the drawings. Note that the dimensions of the figures illustrated in the following description are merely examples, and the present invention is not necessarily limited thereto, and can be practiced with appropriate changes within the scope of the gist thereof. .

図１に示すように、実施形態の一例の嵌合具１は、帯状の第１基材１１の表面１１ａに長手方向に沿って雄側嵌合部１２が設けられた雄側嵌合部材１０と、帯状の第２基材２１の表面２１ａに長手方向に沿って雌側嵌合部２２が設けられた雌側嵌合部材２０とを備えている。 As shown in FIG. 1, a fitting tool 1 according to an example of the embodiment includes a male side fitting member 10 in which a male side fitting part 12 is provided on a surface 11a of a strip-shaped first base material 11 along the longitudinal direction. and a female side fitting member 20 in which a female side fitting part 22 is provided on the surface 21a of a band-shaped second base material 21 along the longitudinal direction.

図２に示す一例の雄側嵌合部１２は、第１基材１１の第２基材２１との対向面である表面１１ａから立ち上がる幹部１２ａと、幹部１２ａの先端部に設けられ、幹部１２ａよりも大きい断面略半円形状の頭部１２ｂとを備えている。雌側嵌合部２２は、第２基材２１の第１基材１１との対向面である表面２１ａから断面円弧状に立ち上がる一対のアーム部２２ａ，２２ｂを備え、それらアーム部２２ａ，２２ｂの内側に凹部２２ｃが形成されている。
雄側嵌合部１２と雌側嵌合部２２は、雄側嵌合部１２の頭部１２ｂが雌側嵌合部２２の凹部２２ｃに嵌まることにより、着脱自在に嵌合する。なお、雄側嵌合部１２及び雌側嵌合部２２の態様は、着脱自在に嵌合するものであればよく、図２の態様には限定されない。 The male side fitting part 12 of the example shown in FIG. The head portion 12b has a generally semicircular cross section larger than the head portion 12b. The female side fitting portion 22 includes a pair of arm portions 22a, 22b rising up from the surface 21a of the second base material 21, which is the surface facing the first base material 11, and having an arcuate cross section. A recess 22c is formed inside.
The male side fitting part 12 and the female side fitting part 22 are removably fitted together by fitting the head 12b of the male side fitting part 12 into the recess 22c of the female side fitting part 22. Note that the form of the male side fitting part 12 and the female side fitting part 22 is not limited to the form shown in FIG. 2, as long as they fit together removably.

図２に示すように、第１基材１１は、メイン層１３と、メイン層１３の雄側嵌合部１２とは反対側に設けられたシール層１４と、メイン層１３とシール層１４の間に設けられた中間層１５と、を備えている。 As shown in FIG. 2, the first base material 11 includes a main layer 13, a seal layer 14 provided on the side opposite to the male side fitting part 12 of the main layer 13, and a seal layer 14 between the main layer 13 and the seal layer 14. and an intermediate layer 15 provided therebetween.

第１基材１１の中間層１５は、第１基材１１の幅方向における雄側嵌合部１２及び雌側嵌合部２２が存在する領域３０には設けられておらず、その両側の領域３１，３２にそれぞれ配置されている。第１基材１１の嵌合部が存在する領域３０に中間層１５が設けられていないことで、雄側嵌合部材１０にカールが発生することが抑制される。 The intermediate layer 15 of the first base material 11 is not provided in the region 30 where the male side fitting part 12 and the female side fitting part 22 are present in the width direction of the first base material 11, and is not provided in the area 30 on both sides thereof. 31 and 32, respectively. Since the intermediate layer 15 is not provided in the region 30 where the fitting portion of the first base material 11 exists, curling of the male fitting member 10 is suppressed.

第１基材１１の幅方向における嵌合部が存在しない一方の端部側の領域３１（図２の領域３０よりも右側の領域）の中間層１５の嵌合部側の端と、雌側嵌合部２２との幅方向の距離ｄ１は、０ｍｍ以上が好ましく、０．２ｍｍ以上がより好ましく、０．４ｍｍ以上がさらに好ましい。一方、距離ｄ１は、３ｍｍ以下が好ましく、２ｍｍ以下がより好ましく、１ｍｍ以下がさらに好ましい。距離ｄ１の下限と上限は任意に組み合わせることができ、例えば０ｍｍ以上３ｍｍ以下が好ましく、０．２ｍｍ以上２ｍｍ以下がより好ましく、０．４ｍｍ以上１ｍｍ以下がさらに好ましい。距離ｄ１が前記範囲内であれば、雄側嵌合部材１０にカールが発生することを抑制しやすい。 The end of the intermediate layer 15 on the side of the fitting part in the area 31 on the one end side where the fitting part does not exist in the width direction of the first base material 11 (the area on the right side of the area 30 in FIG. 2), and the female side The widthwise distance d1 from the fitting portion 22 is preferably 0 mm or more, more preferably 0.2 mm or more, and even more preferably 0.4 mm or more. On the other hand, the distance d1 is preferably 3 mm or less, more preferably 2 mm or less, and even more preferably 1 mm or less. The lower limit and upper limit of the distance d1 can be arbitrarily combined, for example, preferably 0 mm or more and 3 mm or less, more preferably 0.2 mm or more and 2 mm or less, and even more preferably 0.4 mm or more and 1 mm or less. If the distance d1 is within the above range, curling of the male fitting member 10 can be easily suppressed.

第１基材１１の幅方向における嵌合部が存在しない他方の端部側の領域３２（図２の領域３０よりも左側の領域）の中間層１５の嵌合部側の端と、雌側嵌合部２２との幅方向の距離ｄ２の好ましい下限及び上限は、距離ｄ１の好ましい下限及び上限の好ましい範囲と同様である。 The fitting part side end of the intermediate layer 15 in the area 32 on the other end side (the area on the left side of the area 30 in FIG. 2) where the fitting part does not exist in the width direction of the first base material 11, and the female side The preferable lower limit and upper limit of the distance d 2 in the width direction from the fitting portion 22 are the same as the preferable lower limit and upper limit of the distance d 1 .

図２に示す例では、第１基材１１の嵌合部が存在しない領域３１，３２のいずれにおいても、中間層１５の嵌合部とは反対側の端の位置は、第１基材１１の端と一致している。なお、この態様に限定されるものではなく、中間層１５の嵌合部とは反対側の端が、第１基材１１の端よりも嵌合部側に位置していてもよい。中間層１５の嵌合部とは反対側の端と第１基材１１の端の幅方向の距離は、１ｍｍ以下が好ましく、０ｍｍが特に好ましい。 In the example shown in FIG. 2, in both of the regions 31 and 32 where the fitting portion of the first base material 11 does not exist, the position of the end of the intermediate layer 15 on the opposite side from the fitting portion of the first base material 11 is coincides with the edge of Note that the present invention is not limited to this embodiment, and the end of the intermediate layer 15 on the opposite side to the fitting portion may be located closer to the fitting portion than the end of the first base material 11. The distance in the width direction between the end of the intermediate layer 15 opposite to the fitting portion and the end of the first base material 11 is preferably 1 mm or less, and particularly preferably 0 mm.

メイン層１３を形成する材料としては、特に限定されず、公知の嵌合具の基材に使用されるものが使用できる。例えば低密度ポリエチレン（ＬＤＰＥ）、直鎖状低密度ポリエチレン（ＬＬＤＰＥ）、高密度ポリエチレン（ＨＤＰＥ）、エチレン－αオレフィン共重合体などのポリエチレン、ポリプロピレン、エチレン－酢酸ビニル共重合体等、ポリエステル樹脂（ポリエチレンテレフタレート、ポリエチレンナフタレート等）、ポリアミド樹脂（ナイロン等）等を例示できる。なかでも、剛性と柔軟性のバランスの点から、ポリエチレンやポリプロピレンといったポリオレフィン系樹脂が好ましく、特にＬＤＰＥ及びＬＬＤＰＥの少なくとも１種類を含むことがより好ましい。メイン層を形成する材料としては、１種を単独で使用してもよく、２種以上を併用してもよい。 The material for forming the main layer 13 is not particularly limited, and materials used for the base materials of known fittings can be used. For example, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), polyethylene such as ethylene-α olefin copolymer, polypropylene, ethylene-vinyl acetate copolymer, etc., polyester resin ( Examples include polyethylene terephthalate, polyethylene naphthalate, etc.), polyamide resins (nylon, etc.), and the like. Among these, polyolefin resins such as polyethylene and polypropylene are preferable from the viewpoint of a balance between rigidity and flexibility, and it is particularly preferable to contain at least one of LDPE and LLDPE. As the material forming the main layer, one type may be used alone, or two or more types may be used in combination.

シール層１４を形成する材料としては、特に限定されず、例えばＬＬＤＰＥ、無延伸ポリプロピレン、エチレン－酢酸ビニル共重合体、アイオノマーを例示できる。なかでも、柔軟性及び低温シール性の点から、ＬＬＤＰＥが好ましい。シール層を形成する材料としては、１種を単独で使用してもよく、２種以上を併用してもよい。 The material forming the seal layer 14 is not particularly limited, and examples thereof include LLDPE, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer. Among these, LLDPE is preferred in terms of flexibility and low-temperature sealability. As the material for forming the seal layer, one type may be used alone, or two or more types may be used in combination.

中間層１５を形成する材料としては、特に限定されず、公知の嵌合具の基材に使用されるものが使用できる。例えば低密度ポリエチレン（ＬＤＰＥ）、直鎖状低密度ポリエチレン（ＬＬＤＰＥ）、高密度ポリエチレン（ＨＤＰＥ）、エチレン－αオレフィン共重合体などのポリエチレン、ポリプロピレン、エチレン－酢酸ビニル共重合体等、ポリエステル樹脂（ポリエチレンテレフタレート、ポリエチレンナフタレート等）、ポリアミド樹脂（ナイロン等）等を例示できる。なかでも、密度が９３０ｋｇ／ｍ３以上の樹脂が好ましく、高密度ポリエチレン（ＨＤＰＥ）が特に好ましい。
領域３１の中間層１５と領域３２の中間層１５を形成する材料は、同じであってもよく、異なっていてもよい。 The material for forming the intermediate layer 15 is not particularly limited, and materials used for the base materials of known fittings can be used. For example, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), polyethylene such as ethylene-α olefin copolymer, polypropylene, ethylene-vinyl acetate copolymer, etc., polyester resin ( Examples include polyethylene terephthalate, polyethylene naphthalate, etc.), polyamide resins (nylon, etc.), and the like. Among these, resins with a density of 930 kg/m 3 or more are preferred, and high-density polyethylene (HDPE) is particularly preferred.
The materials forming the intermediate layer 15 in region 31 and the intermediate layer 15 in region 32 may be the same or different.

メイン層１３、シール層１４及び中間層１５には、必要に応じて安定剤、酸化防止剤、滑剤、帯電防止剤、成形助剤、着色剤等の公知の添加剤が含まれ得る。 The main layer 13, the seal layer 14, and the intermediate layer 15 may contain known additives such as a stabilizer, an antioxidant, a lubricant, an antistatic agent, a molding aid, and a coloring agent, as necessary.

第１基材１１の幅は、袋本体に熱溶着したときに充分なシール強度が得られやすいことから、２ｍｍ以上が好ましく、３ｍｍ以上がより好ましい。第１基材１１の幅は、柔軟性に優れ、かつ取り扱いやすく、流通及び保管時の嵌合具の変形が起こりづらいことから、６０ｍｍ以下が好ましく、４０ｍｍ以下がより好ましい。第１基材１１の幅の下限と上限は任意に組み合わせることができ、例えば３ｍｍ以上４０ｍｍ以下が好ましい。 The width of the first base material 11 is preferably 2 mm or more, and more preferably 3 mm or more, since sufficient sealing strength can easily be obtained when it is thermally welded to the bag body. The width of the first base material 11 is preferably 60 mm or less, more preferably 40 mm or less, because it has excellent flexibility, is easy to handle, and the fitting tool is difficult to deform during distribution and storage. The lower and upper limits of the width of the first base material 11 can be arbitrarily combined, and are preferably, for example, 3 mm or more and 40 mm or less.

第１基材１１の厚さは、袋本体に熱溶着したときに充分なシール強度が得られやすいことから、０．１ｍｍ以上が好ましく、０．１２ｍｍ以上がより好ましい。第１基材１１の厚さは、柔軟性に優れ、取り扱いやすいことから、０．４ｍｍ以下が好ましく、０．３ｍｍ以下がより好ましい。第１基材１１の厚さの下限と上限は任意に組み合わせることができ、例えば０．１２ｍｍ以上０．３ｍｍ以下が好ましい。 The thickness of the first base material 11 is preferably 0.1 mm or more, and more preferably 0.12 mm or more, since sufficient sealing strength is likely to be obtained when it is thermally welded to the bag body. The thickness of the first base material 11 is preferably 0.4 mm or less, more preferably 0.3 mm or less, since it has excellent flexibility and is easy to handle. The lower and upper limits of the thickness of the first base material 11 can be arbitrarily combined, and are preferably 0.12 mm or more and 0.3 mm or less, for example.

中間層１５の厚さは、カールの発生を抑制することから、０．０２ｍｍ以上が好ましく、０．０５ｍｍ以上がより好ましい。中間層１５の厚さは、良好なポイントシール性（装体のサイドシール部を形成する際に嵌合具を潰すポイントシール工程において、潰した部分にピンホールが発生することを抑制する）を有することから、０．３ｍｍ以下が好ましく、０．２ｍｍ以下がより好ましい。中間層１５の厚さの下限と上限は任意に組み合わせることができ、例えば０．０５ｍｍ以上０．２ｍｍ以下が好ましい。 The thickness of the intermediate layer 15 is preferably 0.02 mm or more, more preferably 0.05 mm or more, in order to suppress the occurrence of curl. The thickness of the intermediate layer 15 is determined to have good point sealing properties (in the point sealing process in which the fitting tool is crushed when forming the side seal portion of the body, pinholes are suppressed from being generated in the crushed portion). Therefore, the diameter is preferably 0.3 mm or less, more preferably 0.2 mm or less. The lower and upper limits of the thickness of the intermediate layer 15 can be arbitrarily combined, and are preferably 0.05 mm or more and 0.2 mm or less, for example.

第１基材１１における中間層１５が設けられている部分のメイン層１３の厚さは、充分な剛性を有することから、０．０１ｍｍ以上が好ましく、０．０３ｍｍ以上がより好ましい。前記メイン層１３の厚さは、柔軟性に優れ取り扱いやすいことから、０．４ｍｍ以下が好ましく、０．３ｍｍ以下がより好ましい。前記メイン層１３の厚さの下限と上限は任意に組み合わせることができ、例えば０．０３ｍｍ以上０．３ｍｍ以下が好ましい。 The thickness of the main layer 13 in the portion of the first base material 11 where the intermediate layer 15 is provided is preferably 0.01 mm or more, more preferably 0.03 mm or more, in order to have sufficient rigidity. The thickness of the main layer 13 is preferably 0.4 mm or less, more preferably 0.3 mm or less, since it has excellent flexibility and is easy to handle. The lower and upper limits of the thickness of the main layer 13 can be arbitrarily combined, and are preferably 0.03 mm or more and 0.3 mm or less, for example.

第１基材１１における中間層１５が設けられていない部分のメイン層１３の厚さは、充分な剛性を有し、また、袋本体に熱溶着したときに充分なシール強度が得られやすいことから、０．１ｍｍ以上が好ましく、０．１２ｍｍ以上がより好ましい。前記メイン層１３の厚さは、柔軟性に優れ取り扱いやすいことから、０．４ｍｍ以下が好ましく、０．３ｍｍ以下がより好ましい。前記メイン層１３の厚さの下限と上限は任意に組み合わせることができ、例えば０．１２ｍｍ以上０．３ｍｍ以下が好ましい。 The thickness of the main layer 13 in the portion of the first base material 11 where the intermediate layer 15 is not provided has sufficient rigidity, and it is easy to obtain sufficient sealing strength when thermally welded to the bag body. Therefore, it is preferably 0.1 mm or more, and more preferably 0.12 mm or more. The thickness of the main layer 13 is preferably 0.4 mm or less, more preferably 0.3 mm or less, since it has excellent flexibility and is easy to handle. The lower and upper limits of the thickness of the main layer 13 can be arbitrarily combined, and are preferably 0.12 mm or more and 0.3 mm or less, for example.

シール層１４の厚さは、袋本体に熱溶着したときに充分なシール強度が得られやすいことから、０．０１ｍｍ以上が好ましく、０．０２ｍｍ以上がより好ましい。シール層１４の厚さは、柔軟性に優れ取り扱いやすいことから、０．２ｍｍ以下が好ましく、０．１ｍｍ以下がより好ましい。シール層１４の厚さの下限と上限は任意に組み合わせることができ、例えば０．０２ｍｍ以上０．１ｍｍ以下が好ましい。 The thickness of the seal layer 14 is preferably 0.01 mm or more, and more preferably 0.02 mm or more, since sufficient seal strength is easily obtained when it is thermally welded to the bag body. The thickness of the seal layer 14 is preferably 0.2 mm or less, more preferably 0.1 mm or less, since it has excellent flexibility and is easy to handle. The lower and upper limits of the thickness of the seal layer 14 can be arbitrarily combined, and are preferably, for example, 0.02 mm or more and 0.1 mm or less.

第２基材２１は、第１基材１１と同様の構成であり、メイン層２３と、メイン層２３の雌側嵌合部２２とは反対側に設けられたシール層２４と、メイン層２３とシール層２４の間に設けられた中間層２５と、を備えている。 The second base material 21 has the same configuration as the first base material 11, and includes a main layer 23, a seal layer 24 provided on the side opposite to the female side fitting part 22 of the main layer 23, and a main layer 23. and an intermediate layer 25 provided between the seal layer 24 and the seal layer 24.

第２基材２１の中間層２５は、第２基材２１の幅方向における雄側嵌合部１２及び雌側嵌合部２２が存在する領域３０には設けられておらず、その両側の領域３１，３２にそれぞれ配置されている。第２基材２１の嵌合部が存在する領域３０に中間層２５が設けられていないことで、雌側嵌合部材２０にカールが発生することが抑制される。 The intermediate layer 25 of the second base material 21 is not provided in the region 30 where the male side fitting part 12 and the female side fitting part 22 are present in the width direction of the second base material 21, and is not provided in the area 30 on both sides thereof. 31 and 32, respectively. Since the intermediate layer 25 is not provided in the region 30 where the fitting portion of the second base material 21 exists, curling of the female fitting member 20 is suppressed.

第２基材２１の幅方向における嵌合部が存在しない一方の端部側の領域３１（図２の領域３０よりも右側の領域）の中間層２５の嵌合部側の端と、雌側嵌合部２２との幅方向の距離ｄ３の好ましい下限及び上限は、距離ｄ１の好ましい下限及び上限の好ましい範囲と同様である。また、第２基材２１の幅方向における嵌合部が存在しない他方の端部側の領域３２（図２の領域３０よりも左側の領域）の中間層２５の嵌合部側の端と、雌側嵌合部２２との幅方向の距離ｄ４の好ましい下限及び上限も、距離ｄ１の好ましい下限及び上限の好ましい範囲と同様である。 The end of the middle layer 25 on the side of the fitting part in the area 31 (the area on the right side of the area 30 in FIG. 2) on the one end side where the fitting part does not exist in the width direction of the second base material 21, and the female side The preferred lower limit and upper limit of the distance d3 in the width direction from the fitting portion 22 are the same as the preferred lower limit and upper limit of the distance d1 . In addition, the end of the intermediate layer 25 on the fitting part side of the region 32 (the area on the left side of the region 30 in FIG. 2) on the other end side where the fitting part does not exist in the width direction of the second base material 21; The preferable lower limit and upper limit of the distance d4 in the width direction from the female side fitting part 22 are also the same as the preferable ranges of the preferable lower limit and upper limit of the distance d1 .

図２に示す例では、第２基材２１の嵌合部が存在しない領域３１，３２のいずれにおいても、中間層２５の嵌合部とは反対側の端の位置は、第２基材２１の端と一致している。なお、この態様に限定されるものではなく、中間層２５の嵌合部とは反対側の端が、第２基材２１の端よりも嵌合部側に位置していてもよい。中間層２５の嵌合部とは反対側の端と第２基材２１の端の幅方向の距離は、１ｍｍ以下が好ましく、０ｍｍが特に好ましい。 In the example shown in FIG. 2, in both of the regions 31 and 32 where the fitting portion of the second base material 21 does not exist, the position of the end of the intermediate layer 25 on the opposite side from the fitting portion is located on the second base material 21. coincides with the edge of Note that the present invention is not limited to this embodiment, and the end of the intermediate layer 25 opposite to the fitting portion may be located closer to the fitting portion than the end of the second base material 21 . The distance in the width direction between the end of the intermediate layer 25 opposite to the fitting portion and the end of the second base material 21 is preferably 1 mm or less, and particularly preferably 0 mm.

メイン層２３、シール層２４及び中間層２５を形成する材料としては、特に限定されず、メイン層１３、シール層１４及び中間層１５を形成する材料として例示したものと同じものを例示でき、好ましい態様も同じである。領域３１の中間層２５と領域３２の中間層２５を形成する材料は、同じであってもよく、異なっていてもよい。 The materials forming the main layer 23, the seal layer 24, and the intermediate layer 25 are not particularly limited, and the same materials as those exemplified as the materials forming the main layer 13, the seal layer 14, and the intermediate layer 15 can be exemplified, and are preferred. The aspect is also the same. The materials forming the intermediate layer 25 in the region 31 and the intermediate layer 25 in the region 32 may be the same or different.

メイン層２３、シール層２４及び中間層２５には、必要に応じて安定剤、酸化防止剤、滑剤、帯電防止剤、成形助剤、着色剤等の公知の添加剤が含まれ得る。
メイン層１３、シール層１４及び中間層１５を形成する材料と、メイン層２３、シール層２４及び中間層２５を形成する材料とは、それぞれ同じであってもよく、異なっていてもよい。 The main layer 23, the seal layer 24, and the intermediate layer 25 may contain known additives such as a stabilizer, an antioxidant, a lubricant, an antistatic agent, a molding aid, and a coloring agent, if necessary.
The materials forming the main layer 13, the seal layer 14, and the intermediate layer 15 and the materials forming the main layer 23, the seal layer 24, and the intermediate layer 25 may be the same or different.

第２基材２１の好ましい幅は、第１基材１１の好ましい幅と同様である。第１基材１１の幅と第２基材２１の幅は、同じであってもよく、異なっていてもよい。
第２基材２１、メイン層２３、シール層２４及び中間層２５の好ましい厚さは、第１基材１１、メイン層１３、シール層１４及び中間層１５の好ましい厚さと同様である。第１基材１１、メイン層１３、シール層１４及び中間層１５の厚さと、第２基材２１、メイン層２３、シール層２４及び中間層２５の厚さは、それぞれ同じであってもよく、異なっていてもよい。 The preferred width of the second base material 21 is the same as the preferred width of the first base material 11. The width of the first base material 11 and the width of the second base material 21 may be the same or different.
The preferred thicknesses of the second base material 21, the main layer 23, the seal layer 24, and the intermediate layer 25 are the same as the preferred thicknesses of the first base material 11, the main layer 13, the seal layer 14, and the intermediate layer 15. The thickness of the first base material 11, the main layer 13, the seal layer 14, and the intermediate layer 15 may be the same as the thickness of the second base material 21, the main layer 23, the seal layer 24, and the intermediate layer 25, respectively. , may be different.

嵌合具全体におけるメイン層、シール層及び中間層の質量割合は、嵌合具の総質量に対して、メイン層が１０質量％以上９０質量％以下、シール層が５質量％以上３０質量％以下、中間層が５質量％以上６０質量％以下（合計が１００質量％）であることが好ましく、メイン層が５０質量％以上７０質量％以下、シール層が１０質量％以上２０質量％以下、中間層が１０質量％以上４５質量％以下（合計が１００質量％）であることがより好ましい。メイン層、シール層及び中間層の質量割合が前記範囲内であれば、層間剥離を抑制しつつ、カールの発生を抑制することが容易になる。 The mass ratio of the main layer, seal layer, and intermediate layer in the entire fitting tool is 10% by mass or more and 90% by mass or less for the main layer, and 5% by mass or more and 30% by mass for the seal layer, based on the total mass of the fitting tool. Hereinafter, it is preferable that the intermediate layer is 5% by mass or more and 60% by mass or less (the total is 100% by mass), the main layer is 50% by mass or more and 70% by mass or less, the seal layer is 10% by mass or more and 20% by mass or less, It is more preferable that the content of the intermediate layer is 10% by mass or more and 45% by mass or less (the total is 100% by mass). If the mass ratio of the main layer, seal layer, and intermediate layer is within the above range, it becomes easy to suppress the occurrence of curl while suppressing interlayer peeling.

嵌合具１は、嵌合状態の嵌合具１を長手方向と垂直に切断した切断面において、後述の方法（１）により求められる雄側嵌合部材１０のカール角度θ１と、後述の方法（２）により求められる雌側嵌合部材２０のカール角度θ２が、いずれも０．５°以上２０°以下である。すなわち、嵌合具１においては、カールの発生が充分に抑制されている。また、後述の方法（１）及び方法（２）により求められる角度θ１ｍａｘ（ｍｍ）、θ１ｍｉｎ（ｍｍ）、θ２ｍａｘ（ｍｍ）及びθ２ｍｉｎ（ｍｍ）についても同様の範囲が好ましい。 The fitting tool 1 has a curl angle θ 1 of the male side fitting member 10 determined by the method (1) described below on a cut surface obtained by cutting the fitting tool 1 in the fitted state perpendicular to the longitudinal direction, and a curl angle θ 1 determined by the method (1) described later. The curl angle θ 2 of the female side fitting member 20 determined by method (2) is 0.5° or more and 20° or less. That is, in the fitting tool 1, the occurrence of curling is sufficiently suppressed. Moreover, the same range is preferable for the angles θ 1max (mm), θ 1min (mm), θ 2max (mm), and θ 2min (mm) determined by methods (1) and (2) described below.

カール角度θ１は、０．５°以上であり、充分な柔軟性を有することから、２°以上が好ましく、３°以上がより好ましい。一方、カール角度θ１は、２０°以下であり、製袋時に嵌合具が袋本体へ安定して装着できることから、１５°以下が好ましく、１０°以下がより好ましい。カール角度θ１の下限と上限は任意に組み合わせることができ、例えば２°以上１５°以下が好ましく、３°以上１０°以下がより好ましい。また、θ１ｍａｘ（ｍｍ）及びθ１ｍｉｎ（ｍｍ）についても同様の範囲が好ましい。 The curl angle θ 1 is 0.5° or more, and is preferably 2° or more, more preferably 3° or more, in order to have sufficient flexibility. On the other hand, the curl angle θ 1 is preferably 15° or less, more preferably 10° or less, since it is 20° or less, and the fitting tool can be stably attached to the bag body during bag manufacturing. The lower limit and upper limit of the curl angle θ 1 can be arbitrarily combined, for example, preferably 2° or more and 15° or less, more preferably 3° or more and 10° or less. Moreover, the same range is preferable for θ 1max (mm) and θ 1min (mm).

カール角度θ２は、カール角度θ１と同様の理由から、０．５°以上であり、２°以上が好ましく、３°以上がより好ましく、一方、２０°以下であり、１５°以下が好ましく、１０°以下がより好ましい。カール角度θ２の下限と上限は任意に組み合わせることができ、例えば２°以上１５°以下が好ましく、３°以上１０°以下がより好ましい。また、θ２ｍａｘ（ｍｍ）及びθ２ｍｉｎ（ｍｍ）についても同様の範囲が好ましい。 The curl angle θ 2 is 0.5° or more, preferably 2° or more, and more preferably 3° or more, for the same reason as the curl angle θ 1 , while it is 20° or less, preferably 15° or less. , more preferably 10° or less. The lower limit and upper limit of the curl angle θ 2 can be arbitrarily combined, for example, preferably 2° or more and 15° or less, more preferably 3° or more and 10° or less. Moreover, the same range is preferable for θ 2max (mm) and θ 2min (mm).

（方法（１））
以下、カール角度θ１を求める方法（１）について、一例を示して説明する。図３に示すように、雄側嵌合部材１０が上側に配置され、雌側嵌合部材２０が下側に配置された嵌合状態の嵌合具１を長手方向と垂直に切断し、その切断面において以下の手順（i）～（viii）を行う。
（i）雄側嵌合部１２の幅方向の中心線を直線ｋ１とし、第１基材１１の雄側嵌合部１２が設けられた表面１１ａの反対面１１ｂと直線ｋ１との交点を点Ｏ１とし、点Ｏ１を通る直線ｋ１に直交する直線を基準線ｋ２とする。
（ii）第１基材１１の直線ｋ１の一方の端部側（図３における直線ｋ１の右側）における、第１基材１１の面（図３に示す例では反対面１１ｂ）上で直線ｋ２との距離が最大となる位置を点Ａ１とする。なお、図３に示す例とは反対に、第１基材１１の一方の端部側が嵌合部側にカールしている場合には、点Ａ１は第１基材１１の表面１１ａ上に位置する。
（iii）第１基材１１を直線ｋ２に沿って直線状に延ばした状態の第１基材１１における、直線ｋ２上の一方の端部側の端の位置（第１基材１１にカールが発生せず直線状であった場合の端の位置）を点Ｃ１とする。
（iv）点Ａ１と点Ｏ１を通る直線ａ１と、基準線ｋ２がなす角度θＡ１（基準線ｋ２からカールしている方向への角度）を測定する。
（v）第１基材１１の直線ｋ１の他方の端部側（図３における直線ｋ１の左側）における、第１基材１１の面（図３に示す例では反対面１１ｂ）上で直線ｋ２との距離が最大となる位置を点Ｂ１とする。なお、図３に示す例とは反対に、第１基材１１の他方の端部側が嵌合部側にカールしている場合には、点Ｂ１は第１基材１１の表面１１ａ上に位置する。
（vi）第１基材１１を直線ｋ２に沿って直線状に延ばした状態の第１基材１１における、直線ｋ２上の他方の端部側の端の位置（第１基材１１にカールが発生せず直線状であった場合の端の位置）を点Ｄ１とする。
（vii）点Ｂ１と点Ｏ１を通る直線ｂ１と、基準線ｋ２がなす角度θＢ１（基準線ｋ２からカールしている方向への角度）を測定する。
（viii）角度θＡ１と角度θＢ１の平均をカール角度θ１とする。また、角度θＡ１と角度θＢ１のうち、数値が大きい方を最大角度θ１ｍａｘ、数値が小さい方を最小角度θ１ｍｉｎとする。 (Method (1))
Hereinafter, the method (1) for determining the curl angle θ 1 will be explained by showing an example. As shown in FIG. 3, the fitting tool 1 in the fitted state in which the male side fitting member 10 is arranged on the upper side and the female side fitting member 20 is arranged on the lower side is cut perpendicularly to the longitudinal direction, and the fitting tool 1 is cut perpendicularly to the longitudinal direction. Perform the following steps (i) to (viii) on the cut surface.
(i) Let the center line in the width direction of the male side fitting part 12 be a straight line k1, and point the intersection of the opposite surface 11b of the surface 11a of the first base material 11 on which the male side fitting part 12 is provided with the straight line k1. Let O1 be the reference line k2, and a straight line passing through the point O1 and perpendicular to the straight line k1.
(ii) A straight line k2 on the surface of the first base material 11 (the opposite surface 11b in the example shown in FIG. 3) on one end side of the straight line k1 of the first base material 11 (the right side of the straight line k1 in FIG. 3). The position where the distance between the two points is maximum is defined as point A1. Note that, contrary to the example shown in FIG. do.
(iii) The position of the end on one end side on the straight line k2 of the first base material 11 in a state where the first base material 11 is extended linearly along the straight line k2 (the first base material 11 is curled). The position of the end in the case where the curve is not generated and the curve is straight is defined as point C1.
(iv) Measure the angle θ A1 (angle from the reference line k2 in the curling direction) between the straight line a1 passing through the points A1 and O1 and the reference line k2.
(v) A straight line k2 on the surface of the first base material 11 (opposite surface 11b in the example shown in FIG. 3) on the other end side of the straight line k1 of the first base material 11 (left side of the straight line k1 in FIG. 3). Let point B1 be the position where the distance is the maximum. Note that, contrary to the example shown in FIG. do.
(vi) The position of the end on the other end side on the straight line k2 of the first base material 11 in a state where the first base material 11 is extended linearly along the straight line k2 (the first base material 11 is curled). The position of the end in the case where it does not occur and is in a straight line is defined as point D1.
(vii) Measure the angle θ B1 (angle in the curling direction from the reference line k2) formed by the straight line b1 passing through point B1 and point O1 and the reference line k2.
(viii) Let the average of angle θ A1 and angle θ B1 be curl angle θ 1 . Also, between the angle θ A1 and the angle θ B1 , the larger numerical value is defined as the maximum angle θ 1max , and the smaller numerical value is defined as the minimum angle θ 1min .

（方法（２））
以下、カール角度θ２を求める方法（２）について、一例を示して説明する。図４に示すように、雄側嵌合部材１０が上側に配置され、雌側嵌合部材２０が下側に配置された嵌合状態の嵌合具１を長手方向と垂直に切断し、その切断面において以下の手順（i）～（viii）を行う。
（i）雌側嵌合部２２の幅方向の中心線を直線ｋ３とし、第２基材２１の雌側嵌合部２２が設けられた表面２１ａの反対面２１ｂと直線ｋ３との交点を点Ｏ２とし、点Ｏ２を通る直線ｋ３に直交する直線を基準線ｋ４とする。
（ii）第２基材２１の直線ｋ３の一方の端部側（図４における直線ｋ３の右側）における、第２基材２１の面（図４に示す例では反対面２１ｂ）上で直線ｋ４との距離が最大となる位置を点Ａ２とする。なお、図４に示す例とは反対に、第２基材２１の一方の端部側が嵌合部側にカールしている場合には、点Ａ２は第２基材２１の表面２１ａ上に位置する。
（iii）第２基材２１を直線ｋ４に沿って直線状に延ばした状態の第２基材２１における、直線ｋ４上の一方の端部側の端の位置（第２基材２１にカールが発生せず直線状であった場合の端の位置）を点Ｃ２とする。
（iv）点Ａ２と点Ｏ２を通る直線ａ２と、基準線ｋ４がなす角度θＡ２（基準線ｋ４からカールしている方向への角度）を測定する。
（v）第２基材２１の直線ｋ３の他方の端部側（図４における直線ｋ３の左側）における、第２基材２１の面（図４に示す例では反対面２１ｂ）上で直線ｋ４との距離が最大となる位置を点Ｂ２とする。なお、図４に示す例とは反対に、第２基材２１の他方の端部側が嵌合部側にカールしている場合には、点Ｂ２は第２基材２１の表面２１ａ上に位置する。
（vi）第２基材２１を直線ｋ４に沿って直線状に延ばした状態の第２基材２１における、直線ｋ４上の他方の端部側の端の位置（第２基材２１にカールが発生せず直線状であった場合の端の位置）を点Ｄ２とする。
（vii）点Ｂ２と点Ｏ２を通る直線ｂ２と、基準線ｋ４がなす角度θＢ２（基準線ｋ４からカールしている方向への角度）を測定する。
（viii）角度θＡ２と角度θＢ２の平均をカール角度θ２とする。また、角度θＡ２と角度θＢ２のうち、数値が大きい方を最大角度θ２ｍａｘ、数値が小さい方を最小角度θ２ｍｉｎとする。 (Method (2))
Hereinafter, the method (2) for determining the curl angle θ 2 will be explained using an example. As shown in FIG. 4, the fitting tool 1 in the fitted state in which the male side fitting member 10 is arranged on the upper side and the female side fitting member 20 is arranged on the lower side is cut perpendicularly to the longitudinal direction, and the fitting tool 1 is cut perpendicularly to the longitudinal direction. Perform the following steps (i) to (viii) on the cut surface.
(i) The center line in the width direction of the female side fitting part 22 is a straight line k3, and the intersection of the opposite surface 21b of the surface 21a of the second base material 21 on which the female side fitting part 22 is provided and the straight line k3 is a point. 02, and a straight line passing through point O2 and perpendicular to straight line k3 is defined as reference line k4.
(ii) Straight line k4 on the surface of second base material 21 (opposite surface 21b in the example shown in FIG. 4) on one end side of straight line k3 of second base material 21 (right side of straight line k3 in FIG. 4) Let point A2 be the position where the distance is maximum. Note that, contrary to the example shown in FIG. do.
(iii) The position of the end on one end side of the straight line k4 in the second base material 21 in a state where the second base material 21 is extended linearly along the straight line k4 (the second base material 21 is curled). The position of the end in the case where the curve is not generated and the curve is straight is defined as point C2.
(iv) Measure the angle θ A2 (angle from the reference line k4 in the curling direction) between the straight line a2 passing through point A2 and point O2 and the reference line k4.
(v) Straight line k4 on the surface of second base material 21 (opposite surface 21b in the example shown in FIG. 4) on the other end side of straight line k3 of second base material 21 (left side of straight line k3 in FIG. 4). The position where the distance between the two points is maximum is defined as point B2. Note that, contrary to the example shown in FIG. do.
(vi) The position of the end of the second base material 21 on the other end side on the straight line k4 in the state where the second base material 21 is extended linearly along the straight line k4 (the second base material 21 is curled). The position of the end in the case where the curve is not generated and the curve is straight is defined as point D2.
(vii) Measure the angle θ B2 (angle from the reference line k4 in the curling direction) between the straight line b2 passing through point B2 and point O2 and the reference line k4.
(viii) Let the average of angle θ A2 and angle θ B2 be curl angle θ 2 . Further, between the angle θ A2 and the angle θ B2 , the larger numerical value is defined as the maximum angle θ 2max , and the smaller numerical value is defined as the minimum angle θ 2min .

嵌合具１は、嵌合状態の嵌合具１を長手方向と垂直に切断した切断面において、後述の方法（３）により求められる雄側嵌合部材１０の末端の位置Ｄ３と、後述の方法（４）により求められる雌側嵌合部材２０の末端の位置Ｄ５が、いずれも－１．８ｍｍ以上＋０．７５ｍｍ以下であることが好ましい。これにより、嵌合具１は、カールの発生がさらに抑制されたものとなる。また、後述の方法（３）及び方法（４）により求められる位置Ｄ３ｍａｘ（ｍｍ）、Ｄ３ｍｉｎ（ｍｍ）、Ｄ５ｍａｘ（ｍｍ）及びＤ５ｍｉｎ（ｍｍ）についても同様の範囲が好ましい。 The fitting tool 1 has a position D 3 of the end of the male side fitting member 10 determined by the method (3) described later on a cut surface obtained by cutting the fitting tool 1 in the fitted state perpendicular to the longitudinal direction. It is preferable that the position D5 of the end of the female side fitting member 20 determined by method (4) is −1.8 mm or more and +0.75 mm or less. Thereby, the fitting tool 1 becomes one in which the occurrence of curling is further suppressed. Further, the same range is preferable for the positions D 3max (mm), D 3min (mm), D 5max (mm), and D 5min (mm) determined by method (3) and method (4) described below.

雄側嵌合部材の末端の位置Ｄ３は、カールが大き過ぎると袋本体への装着が安定しない、あるいは接着時にしわが発生することから、－１．８ｍｍ以上＋０．７５ｍｍ以下が好ましく、－１．５ｍｍ以上＋０．５ｍｍ以下がより好ましく、さらに－１．０ｍｍ以上－０．０１ｍｍ以下が好ましい。特に嵌合部が設けられている側と反対側に大きくカールし過ぎると袋体にうまく接着できない。また、Ｄ３ｍａｘ（ｍｍ）及びＤ３ｍｉｎ（ｍｍ）についても同様の範囲が好ましい。 The position D3 of the end of the male side fitting member is preferably -1.8 mm or more and +0.75 mm or less, because if the curl is too large, the attachment to the bag body will not be stable or wrinkles will occur during adhesion. It is more preferably 1.5 mm or more and +0.5 mm or less, and even more preferably -1.0 mm or more and -0.01 mm or less. In particular, if it curls too much on the side opposite to the side where the fitting part is provided, it will not adhere well to the bag body. Moreover, the same range is preferable for D 3max (mm) and D 3min (mm).

雌側嵌合部材の末端の位置Ｄ５は、位置Ｄ３と同様の理由から－１．８ｍｍ以上＋０．７５ｍｍ以下が好ましく、－１．５ｍｍ以上＋０．５ｍｍ以下がより好ましく、さらに－１．０ｍｍ以上－０．０１ｍｍ以下が好ましい。また、Ｄ５ｍａｘ（ｍｍ）及びＤ５ｍｉｎ（ｍｍ）についても同様の範囲が好ましい。 For the same reason as the position D3 , the position D5 of the end of the female side fitting member is preferably -1.8 mm or more and +0.75 mm or less, more preferably -1.5 mm or more and +0.5 mm or less, and -1. It is preferably 0 mm or more and -0.01 mm or less. Furthermore, similar ranges are preferred for D 5max (mm) and D 5min (mm).

（方法（３））
以下、雄側嵌合部材の末端の位置Ｄ３を求める方法（３）について、一例を示して説明する。図５に示すように、雄側嵌合部材１０が上側に配置され、雌側嵌合部材２０が下側に配置された嵌合状態の嵌合具１を長手方向と垂直に切断し、その切断面において以下の手順（i）～（vi）を行う。
（i）雄側嵌合部１２の幅方向の中心線を直線ｋ１とし、第１基材１１の雄側嵌合部１２が設けられた表面１１ａの反対面１１ｂと直線ｋ１との交点を点Ｏ１とし、点Ｏ１を通る直線ｋ１に直交する直線を基準線ｋ２とする。
（ii）第１基材１１の直線ｋ１の一方の端部側（図５における直線ｋ１の右側）で、雄側嵌合部材１０の末端における基準線ｋ２から最も離れた位置を点Ａ３とする。
（iii）前記点Ａ３と前記基準線ｋ２との距離ＤＡ３（ｍｍ）を測定する。ただし、基準線ｋ２に対し、雄側嵌合部１２が位置する領域を＋（プラス）とし、基準線ｋ２に対し、雄側嵌合部１２の位置する領域の反対側の領域を－（マイナス）とする。すなわち、距離ＤＡ３は、第１基材１１の一方の端部側が雄側嵌合部１２側とは反対側にカールしている場合は－（マイナス）、雄側嵌合部１２側にカールしている場合は＋（プラス）の値である。
（iv）第１基材１１の直線ｋ１の他方の端部側（図５における直線ｋ１の左側）で、雄側嵌合部材１０の末端における基準線ｋ２から最も離れた位置を点Ｂ３とする。
（v）点Ｂ３と基準線ｋ２との距離ＤＢ３（ｍｍ）を測定する。ただし、距離ＤＢ３のプラス、マイナスは前記距離ＤＡ３と同様である。
（vi）距離ＤＡ３と距離ＤＢ３の平均を求め、その平均値を基準線ｋ２に対する雄側嵌合部材１０の末端の位置Ｄ３（ｍｍ）とする。また、距離ＤＡ３と距離ＤＢ３のうち、基準線ｋ２からの距離が遠い方をＤ３ｍａｘ（ｍｍ）、基準線ｋ２からの距離が近い方をＤ３ｍｉｎ（ｍｍ）とする。 (Method (3))
Hereinafter, the method (3) for determining the position D3 of the end of the male side fitting member will be explained by showing an example. As shown in FIG. 5, the fitting tool 1 in the fitted state in which the male side fitting member 10 is placed on the upper side and the female side fitting member 20 is placed on the bottom side is cut perpendicularly to the longitudinal direction. Perform the following steps (i) to (vi) on the cut surface.
(i) Let the center line in the width direction of the male side fitting part 12 be a straight line k1, and point the intersection of the opposite surface 11b of the surface 11a of the first base material 11 on which the male side fitting part 12 is provided with the straight line k1. Let O1 be the reference line k2, and a straight line passing through the point O1 and perpendicular to the straight line k1.
(ii) The farthest position from the reference line k2 at the end of the male side fitting member 10 on one end side of the straight line k1 of the first base material 11 (the right side of the straight line k1 in FIG. 5) is defined as a point A3. .
(iii) Measure the distance D A3 (mm) between the point A3 and the reference line k2. However, with respect to the reference line k2, the area where the male side fitting part 12 is located is + (plus), and with respect to the reference line k2, the area opposite to the area where the male side fitting part 12 is located is - (minus). ). In other words, the distance D A3 is - (minus) when one end side of the first base material 11 is curled toward the side opposite to the male side fitting section 12 side; If it is, it is a + (plus) value.
(iv) On the other end side of the straight line k1 of the first base material 11 (the left side of the straight line k1 in FIG. 5), the position farthest from the reference line k2 at the end of the male side fitting member 10 is defined as point B3. .
(v) Measure the distance D B3 (mm) between point B3 and reference line k2. However, the plus and minus of the distance D B3 are the same as the distance D A3 .
(vi) Find the average of the distance D A3 and the distance D B3 , and set the average value as the position D 3 (mm) of the end of the male side fitting member 10 with respect to the reference line k2. Also, between the distance D A3 and the distance D B3 , the one that is farther from the reference line k2 is D 3max (mm) , and the one that is shorter from the reference line k2 is D 3min (mm).

（方法（４））
以下、雌側嵌合部材の末端の位置Ｄ５を求める方法（４）について、一例を示して説明する。図６に示すように、雄側嵌合部材１０が上側に配置され、雌側嵌合部材２０が下側に配置された嵌合状態の嵌合具１を長手方向と垂直に切断し、その切断面において以下の手順（i）～（vi）を行う。
（i）雌側嵌合部２２の幅方向の中心線を直線ｋ３とし、第２基材２１の雌側嵌合部２２が設けられた表面２１ａの反対面２１ｂと直線ｋ３との交点を点Ｏ２とし、点Ｏ２を通る前記直線ｋ３に直交する直線を基準線ｋ４とする。
（ii）第２基材２１の直線ｋ３の一方の端部側（図６における直線ｋ３の右側）で、雌側嵌合部材２０の末端における基準線ｋ４から最も離れた位置を点Ａ５とする。
（iii）点Ａ５と基準線ｋ４との距離ＤＡ５（ｍｍ）を測定する。ただし、基準線ｋ４に対し、雌側嵌合部２２が位置する領域を＋（プラス）とし、基準線ｋ４に対し、雌側嵌合部２２の位置する領域の反対側の領域を－（マイナス）とする。すなわち、距離ＤＡ５は、第２基材２１の一方の端部側が雌側嵌合部２２側とは反対側にカールしている場合は－（マイナス）、雌側嵌合部２２側にカールしている場合は＋（プラス）の値である。
（iv）第２基材２１の直線ｋ３の他方の端部側（図６における直線ｋ３の左側）で、雌側嵌合部材２０の末端における基準線ｋ４から最も離れた位置を点Ｂ５とする。
（v）点Ｂ５と基準線ｋ４との距離ＤＢ５（ｍｍ）を測定する。ただし、距離ＤＢ５のプラス、マイナスは前記距離ＤＡ５と同様である。
（vi）距離ＤＡ５と距離ＤＢ５の平均を求め、その平均値を基準線ｋ４に対する雌側嵌合部材２０の末端の位置Ｄ５（ｍｍ）とする。また、距離ＤＡ５と距離ＤＢ５のうち、基準線ｋ４からの距離が遠い方をＤ５ｍａｘ（ｍｍ）、基準線ｋ４からの距離が近い方をＤ５ｍｉｎ（ｍｍ）とする。 (Method (4))
Hereinafter, the method (4) for determining the position D5 of the end of the female side fitting member will be explained by showing an example. As shown in FIG. 6, the fitting tool 1 in the fitted state in which the male side fitting member 10 is arranged on the upper side and the female side fitting member 20 is arranged on the lower side is cut perpendicularly to the longitudinal direction. Perform the following steps (i) to (vi) on the cut surface.
(i) The center line in the width direction of the female side fitting part 22 is a straight line k3, and the intersection of the opposite surface 21b of the surface 21a of the second base material 21 on which the female side fitting part 22 is provided and the straight line k3 is a point. 02, and a straight line passing through point O2 and perpendicular to the straight line k3 is defined as a reference line k4.
(ii) The farthest position from the reference line k4 at the end of the female side fitting member 20 on one end side of the straight line k3 of the second base material 21 (the right side of the straight line k3 in FIG. 6) is defined as a point A5. .
(iii) Measure the distance D A5 (mm) between point A5 and reference line k4. However, with respect to the reference line k4, the area where the female side fitting part 22 is located is + (plus), and with respect to the reference line k4, the area opposite to the area where the female side fitting part 22 is located is - (minus). ). In other words, the distance D A5 is - (minus) when one end side of the second base material 21 is curled toward the side opposite to the female side fitting section 22 side; If it is, it is a + (plus) value.
(iv) On the other end side of the straight line k3 of the second base material 21 (the left side of the straight line k3 in FIG. 6), the position farthest from the reference line k4 at the end of the female side fitting member 20 is defined as a point B5. .
(v) Measure the distance D B5 (mm) between point B5 and reference line k4. However, the plus and minus values of the distance D B5 are the same as those of the distance D A5 .
(vi) Find the average of the distance D A5 and the distance D B5 , and set the average value as the position D 5 (mm) of the end of the female side fitting member 20 with respect to the reference line k4. Also, between the distance D A5 and the distance D B5 , the one that is farther from the reference line k4 is D 5max (mm) , and the one that is shorter from the reference line k4 is D 5min (mm).

（製造方法）
嵌合具１の製造方法としては、第１基材１１及び第２基材２１の領域３１，３２に中間層１５，２５を設ける以外は特に限定されず、公知の方法を利用できる。
例えば、メイン層、シール層、中間層を形成するための樹脂材料を溶融混練等によってそれぞれ調製し、特定の領域に中間層を有する多層構成の雄側嵌合部材又は雌側嵌合部材を形成するための複合異形ダイを備えた押出機を用いて共押出しする方法を例示できる。 (Production method)
The method for manufacturing the fitting tool 1 is not particularly limited except that the intermediate layers 15 and 25 are provided in the regions 31 and 32 of the first base material 11 and the second base material 21, and any known method can be used.
For example, resin materials for forming a main layer, a seal layer, and an intermediate layer are prepared by melt-kneading, etc., and a male side fitting member or a female side fitting member with a multilayer structure having an intermediate layer in a specific area is formed. An example is a method of coextrusion using an extruder equipped with a composite profile die for the purpose of coextrusion.

材料の混合方法としては、スーパーミキサ、ヘンシェルミキサ等で乾式混合する方法が挙げられる。
溶融混練方法としては、原料を単軸押出機、二軸押出機、バンバリーミキサ、ニーダ、ミキシングロール等の溶融混練機に供給して溶融混練する方法が挙げられる。
成形方法としては、押出成形法、射出成形法、インフレーション成形法、真空成形法等が挙げられる。 Examples of the method for mixing the materials include dry mixing using a super mixer, a Henschel mixer, or the like.
Examples of the melt-kneading method include a method in which raw materials are supplied to a melt-kneader such as a single-screw extruder, a twin-screw extruder, a Banbury mixer, a kneader, and a mixing roll, and then melt-kneaded.
Examples of the molding method include extrusion molding, injection molding, inflation molding, and vacuum molding.

なお、本発明の嵌合具は、前記した嵌合具１には限定されない。
例えば図２に示す例では、シール層は第１基材及び第２基材の幅方向の全体に設けられているが、この態様には限定されない。シール層は、第１基材及び第２基材の幅方向における雄側嵌合部及び雌側嵌合部が存在する領域には設けず、その両側の領域にそれぞれ配置され得る。これにより、雌側嵌合部材２０にカールが発生することがさらに抑制される。この場合のシール層の配置の好ましい態様は、前記した嵌合具１における中間層１５，２５の好ましい配置と同様である。 Note that the fitting tool of the present invention is not limited to the fitting tool 1 described above.
For example, in the example shown in FIG. 2, the sealing layer is provided over the entire width direction of the first base material and the second base material, but the present invention is not limited to this embodiment. The seal layer may not be provided in the region where the male side fitting part and the female side fitting part exist in the width direction of the first base material and the second base material, but may be arranged in the regions on both sides thereof. This further suppresses curling of the female fitting member 20. A preferred arrangement of the seal layer in this case is the same as the preferred arrangement of the intermediate layers 15 and 25 in the fitting tool 1 described above.

［嵌合具付き袋体］
本発明の嵌合具付き袋体は、本発明の嵌合具を備える嵌合具付き袋体である。本発明の嵌合具付き袋体は、本発明の嵌合具を備える以外は、公知の態様を採用できる。
以下、実施形態の一例の嵌合具付き袋体について説明する。 [Bag body with fitting tool]
The bag body with a fitting tool of the present invention is a bag body with a fitting tool provided with the fitting tool of the present invention. The bag body with a fitting according to the present invention can adopt any known embodiment except that it includes the fitting according to the present invention.
Hereinafter, a bag with a fitting according to an example of the embodiment will be described.

図７に示す例の嵌合具付き袋体１００（以下、単に「袋体１００」ともいう。）は、内容物を収容する袋本体５０と、袋本体５０内の上部の内面に取り付けられた嵌合具１とを具備している。 The bag body 100 with a fitting device shown in FIG. A fitting tool 1 is provided.

袋本体５０は、正面からの視野において矩形を呈する。嵌合具１は、袋本体５０の上部側の内面において、袋本体５０の短手方向に伸びて設けられている。なお、袋本体５０の形状は矩形には限定されない。 The bag body 50 has a rectangular shape when viewed from the front. The fitting tool 1 is provided on the upper inner surface of the bag body 50 so as to extend in the lateral direction of the bag body 50. Note that the shape of the bag body 50 is not limited to a rectangle.

袋本体５０は、不図示の内容物を封入した状態で密封されている。袋本体５０は、第１のフィルム材５２と第２のフィルム材５４を重ね合わせ、四方の周縁部５６を全てヒートシールすることで得られる。周縁部５６においては、第１のフィルム材５２及び第２のフィルム材５４と共に、嵌合具１の両端がヒートシールされている。 The bag body 50 is sealed with contents (not shown) enclosed therein. The bag body 50 is obtained by overlapping a first film material 52 and a second film material 54 and heat-sealing all four peripheral edges 56. At the peripheral portion 56, both ends of the fitting tool 1 are heat-sealed together with the first film material 52 and the second film material 54.

第１のフィルム材５２及び第２のフィルム材５４は、ヒートシールにより嵌合具１を溶着できるものであればよく、内面側からシーラント層と基材層を少なくとも有する積層フィルムが好ましい。 The first film material 52 and the second film material 54 may be any material as long as the fitting tool 1 can be welded by heat sealing, and a laminated film having at least a sealant layer and a base material layer from the inner surface side is preferable.

積層フィルムが有する基材層としては、直鎖状低密度ポリエチレン、低密度ポリエチレン、高密度ポリエチレン、ポリエステル、二軸延伸ナイロン、二軸延伸ポリプロピレン等が挙げられる。
積層フィルムが有するシーラント層としては、直鎖状低密度ポリエチレン、低密度ポリエチレン、無延伸ポリプロピレン、エチレン－酢酸ビニル共重合体、アイオノマー等が挙げられる。 積層フィルムには、バリア層等の機能層を設けてもよい。
また、第１のフィルム材５２及び第２のフィルム材５４は、シーラント層のみからなる単層フィルムであってもよい。 Examples of the base material layer included in the laminated film include linear low density polyethylene, low density polyethylene, high density polyethylene, polyester, biaxially oriented nylon, biaxially oriented polypropylene, and the like.
Examples of the sealant layer included in the laminated film include linear low-density polyethylene, low-density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer. The laminated film may be provided with a functional layer such as a barrier layer.
Moreover, the first film material 52 and the second film material 54 may be single-layer films consisting only of a sealant layer.

袋本体５０は、嵌合具１よりも上部の側に、嵌合具１に沿って切断補助線５８が設けられている。
切断補助線５８は、袋本体５０の切断を補助するための加工が線状に施された部分である。切断補助線５８としては、例えば、第１のフィルム材５２及び第２のフィルム材５４における切断補助線５８の部分に設けられた弱化線が挙げられる。弱化線は、フィルム材に周囲と比べて薄肉化した部分を設けることで形成することができる。その他、弱化線は、ミシン目や、列状に形成された細孔によっても形成することができる。
また、切断補助線５８は、弱化線には限定されず、ハサミやカッター等で切断する位置を示す、印刷等で形成した線であってもよい。 The bag body 50 is provided with a cutting auxiliary line 58 along the fitting tool 1 above the fitting tool 1.
The cutting aid line 58 is a linear portion processed to assist in cutting the bag body 50. Examples of the cutting auxiliary line 58 include weakening lines provided in the first film material 52 and the second film material 54 at the cutting auxiliary line 58 portion. The line of weakness can be formed by providing a portion of the film material that is thinner than the surrounding area. In addition, the line of weakness can also be formed by perforations or pores formed in rows.
Further, the cutting auxiliary line 58 is not limited to a weakened line, but may be a line formed by printing or the like that indicates a position to be cut with scissors, a cutter, or the like.

周縁部５６における切断補助線５８の端部には、ノッチ６０が形成されている。ノッチ６０の形状は、特に限定されず、三角状又は半円形状の切り欠きを採用することができる。また、ノッチ６０は、周縁部５６に設けられた切込みであってもよい。 A notch 60 is formed at the end of the cutting auxiliary line 58 in the peripheral edge 56 . The shape of the notch 60 is not particularly limited, and a triangular or semicircular cutout can be adopted. Further, the notch 60 may be a cut provided in the peripheral portion 56.

図８は、袋体１００を開口した様子を示す概略斜視図である。袋体１００は、ノッチ６０から切断補助線５８に沿って袋本体５０の上部を切断して除去することで、上部にヒートシールされていない端部５０ｂを設けることができる。袋体１００は、端部５０ｂを開口して開口部６２を形成することで、開封することができる。
袋体１００に形成した開口部６２は、嵌合具１の雄側嵌合部材１０と雌側嵌合部材２０とを着脱することで、繰り返し開閉できる。 FIG. 8 is a schematic perspective view showing the bag 100 opened. By cutting and removing the upper part of the bag body 50 from the notch 60 along the cutting auxiliary line 58, the bag 100 can have an end portion 50b that is not heat-sealed at the upper part. The bag 100 can be opened by opening the end 50b to form the opening 62.
The opening 62 formed in the bag body 100 can be repeatedly opened and closed by attaching and detaching the male side fitting member 10 and the female side fitting member 20 of the fitting tool 1.

以上、添付図面を参照しながら本発明に係る好適な実施の形態例について説明したが、本発明は係る例に限定されない。上述した例において示した各構成部材の諸形状や組み合わせ等は一例であって、本発明の主旨から逸脱しない範囲において設計要求等に基づき種々変更可能である。 Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to these examples. The various shapes and combinations of the constituent members shown in the above example are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present invention.

以下、実施例によって本発明を具体的に説明するが、本発明は以下の記載によっては限定されない。 EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited by the following description.

［原料］
本実施例で使用した原料を以下に示す。ＭＦＲは、ＪＩＳ Ｋ ７２１０－１に準拠して、温度：１９０℃、荷重：２．１６ｋｇの条件で測定される値である。
ＬＤＰＥ１：低密度ポリエチレン、ＭＦＲ＝４．０ｇ／１０分、密度９２４ｋｇ／ｃｍ３、融点１１３℃。
ＬＤＰＥ２：低密度ポリエチレン、ＭＦＲ＝５．０ｇ／１０分、密度９２１ｋｇ／ｃｍ３、融点１０８℃。
ＬＬＤＰＥ１：直鎖状低密度ポリエチレン、ＭＦＲ＝１５．０ｇ／１０分、密度９１０ｋｇ／ｃｍ３、融点１２４℃。
ＬＬＤＰＥ２：直鎖状低密度ポリエチレン、ＭＦＲ＝３．５ｇ／１０分、密度９１５ｋｇ／ｃｍ３、融点１２６℃。
ＬＬＤＰＥ３：直鎖状低密度ポリエチレン、ＭＦＲ＝８．５ｇ／１０分、密度９１６ｋｇ／ｃｍ３、融点１２０℃。
ＬＬＤＰＥ４：直鎖状低密度ポリエチレン、ＭＦＲ＝１２．１ｇ／１０分、密度８８４ｋｇ／ｃｍ３、融点７１℃。
ＨＤＰＥ１：高密度ポリエチレン、ＭＦＲ＝８．０ｇ／１０分、密度９６４ｋｇ／ｃｍ３、融点１３１℃。 [material]
The raw materials used in this example are shown below. MFR is a value measured at a temperature of 190° C. and a load of 2.16 kg in accordance with JIS K 7210-1.
LDPE1: Low density polyethylene, MFR = 4.0 g/10 min, density 924 kg/cm 3 , melting point 113°C.
LDPE2: low density polyethylene, MFR = 5.0 g/10 min, density 921 kg/cm 3 , melting point 108°C.
LLDPE1: Linear low density polyethylene, MFR = 15.0 g/10 min, density 910 kg/cm 3 , melting point 124°C.
LLDPE2: Linear low density polyethylene, MFR = 3.5 g/10 min, density 915 kg/cm 3 , melting point 126°C.
LLDPE3: Linear low density polyethylene, MFR = 8.5 g/10 min, density 916 kg/cm 3 , melting point 120°C.
LLDPE4: Linear low density polyethylene, MFR = 12.1 g/10 min, density 884 kg/cm 3 , melting point 71°C.
HDPE1: High density polyethylene, MFR = 8.0 g/10 min, density 964 kg/cm 3 , melting point 131°C.

［評価方法］
（カールの発生）
各例で作製した嵌合具のカールの有無を目視で確認し、製袋時の袋本体への接着について、以下の評価基準に従って評価した。
〇：カールが小さく、製袋時の外観がきれい。
△：カールが発生しているが袋本体へ接着は可能である。
×：カールが大きく袋本体に接着できない。 [Evaluation method]
(occurrence of curl)
The presence or absence of curl in the fittings produced in each example was visually confirmed, and the adhesion to the bag body during bag manufacturing was evaluated according to the following evaluation criteria.
〇: Small curls and good appearance during bag making.
Δ: Curling occurred, but adhesion to the bag body was possible.
×: The curl is too large to adhere to the bag body.

（カール角度）
各例で作製した嵌合具について、前述の方法（１）及び（２）により雄側嵌合部材のカール角度θ１と雌側嵌合部材のカール角度θ２を求めた。また、最大角度θ１ｍａｘ、θ２ｍａｘ及び最小角度θ１ｍｉｎ、θ２ｍｉｎを求めた。 (curl angle)
For the fittings produced in each example, the curl angle θ 1 of the male side fitting member and the curl angle θ 2 of the female side fitting member were determined by the methods (1) and (2) described above. Additionally, the maximum angles θ 1max and θ 2max and the minimum angles θ 1min and θ 2min were determined.

（嵌合部材の末端の位置）
各例で作製した嵌合具について、前述の方法（３）及び（４）により雄側嵌合部材の末端の位置Ｄ３と雌側嵌合部材の末端の位置Ｄ５を求めた。また、基準線ｋ２からの距離が最大である位置Ｄ３ｍａｘ、Ｄ５ｍａｘ及び基準線ｋ４からの距離が最小である位置Ｄ３ｍｉｎ（ｍｍ）、Ｄ５ｍｉｎ（ｍｍ）を求めた。 (Position of end of mating member)
For the fittings produced in each example, the position D3 of the end of the male side fitting member and the position D5 of the end of the female side fitting member were determined using methods (3) and (4) described above. Further, positions D 3max and D 5max having the maximum distance from the reference line k2 and positions D 3min (mm) and D 5min (mm) having the minimum distance from the reference line k4 were determined.

（層間剥離）
各例で作製した嵌合具について、嵌合具を袋本体へ装着させ、嵌合具を手で着脱させる繰り返し開閉試験を１００回行った。その後、顕微鏡による観察を行い、層間剥離の有無を確認し、以下の評価基準に従って評価した。
○：層間剥離が発生していない。
×：層間剥離が発生した。 (Delamination)
Regarding the fittings produced in each example, a repeated opening/closing test was conducted 100 times in which the fittings were attached to the bag body and the fittings were manually attached and detached. Thereafter, observation was performed using a microscope to confirm the presence or absence of delamination, and evaluation was made according to the following evaluation criteria.
○: No interlayer peeling occurred.
×: Delamination occurred.

［実施例１］
図１及び図２に例示した嵌合具１と同じ３層構成の雄側嵌合部材及び雌側嵌合部材を形成するための複合異形ダイを用意した。
メイン層を形成するための樹脂材料Ｘ－１として、ＬＤＰＥ１の４０質量部、ＬＬＤＰＥ１の４０質量部、ＬＬＤＰＥ２の２０質量部を、口径５０ｍｍ、Ｌ／Ｄが３０の押出機を用い、成形温度１７０℃の条件で溶融混錬した。
シール層を形成するための樹脂材料Ｙ－１として、ＬＤＰＥ４を、口径３０ｍｍ、Ｌ／Ｄが３０の押出機を用い、成形温度１７０℃の条件で溶融混錬した。
中間層を形成するための樹脂材料Ｚ－１としてＨＤＰＥ１を、口径３０ｍｍ、Ｌ／Ｄが３０の押出機を用い、成形温度１９０℃の条件で溶融混錬した。
樹脂材料Ｘ－１、Ｙ－１、及びＺ－１を複合異形ダイに導き、押出成形した。その後、冷却水槽に導いて冷却固化させることで、テープ幅が１３ｍｍ、第１基材及び第２基材のそれぞれの総厚が０．１５ｍｍの嵌合具を得た。
第１基材及び第２基材のそれぞれにおいて、メイン層、中間層及びシール層の質量比は６０：３０：１０とした。 [Example 1]
A composite deformed die for forming a male side fitting member and a female side fitting member having the same three-layer structure as the fitting tool 1 illustrated in FIGS. 1 and 2 was prepared.
As the resin material X-1 for forming the main layer, 40 parts by mass of LDPE1, 40 parts by mass of LLDPE1, and 20 parts by mass of LLDPE2 were molded at a molding temperature of 170 using an extruder with a diameter of 50 mm and an L/D of 30. The mixture was melted and kneaded at ℃.
As the resin material Y-1 for forming the seal layer, LDPE4 was melt-kneaded using an extruder with a diameter of 30 mm and an L/D of 30 at a molding temperature of 170°C.
HDPE1 was melt-kneaded as the resin material Z-1 for forming the intermediate layer using an extruder with a diameter of 30 mm and an L/D of 30 at a molding temperature of 190°C.
Resin materials X-1, Y-1, and Z-1 were introduced into a composite deformed die and extruded. Thereafter, the tape was introduced into a cooling water tank and cooled and solidified to obtain a fitting tool having a tape width of 13 mm and a total thickness of each of the first base material and the second base material of 0.15 mm.
In each of the first base material and the second base material, the mass ratio of the main layer, intermediate layer, and seal layer was 60:30:10.

［比較例１］
メイン層を形成するための樹脂材料Ｘと、シール層を形成するための樹脂材料Ｙを表１に示すとおりに変更し、中間層を設けず、メイン層とシール層の質量比を８０：２０、メイン層及びシール層の成形温度を１７０℃とした以外は、実施例１と同様にして嵌合具を作製した。 [Comparative example 1]
The resin material X for forming the main layer and the resin material Y for forming the seal layer were changed as shown in Table 1, no intermediate layer was provided, and the mass ratio of the main layer and the seal layer was 80:20. A fitting was produced in the same manner as in Example 1, except that the molding temperature of the main layer and seal layer was 170°C.

［比較例２］
第１基材及び第２基材の幅方向の全体に中間層を設ける、すなわち雄側嵌合部及び雌側嵌合部が存在する領域にも中間層を設ける以外は、実施例１と同様にして嵌合具を作製した。 [Comparative example 2]
Same as Example 1 except that the intermediate layer is provided over the entire width direction of the first base material and the second base material, that is, the intermediate layer is also provided in the area where the male side fitting part and the female side fitting part are present. A fitting tool was manufactured.

各例のメイン層、中間層、シール層の組成、及び、評価結果を表１に示す。 Table 1 shows the compositions and evaluation results of the main layer, intermediate layer, and seal layer of each example.

Figure 2023149951000002
Figure 2023149951000002

表１に示すように、第１基材及び第２基材の雄側嵌合部及び雌側嵌合部が存在する領域の両側の領域にそれぞれ中間層を設けて３層構造とした実施例１の嵌合具は、層間剥離が生じないうえ、カール角度が小さく、カールの発生が抑制されていた。
一方、中間層を設けない比較例１の嵌合具、及び第１基材及び第２基材の全体に中間層を設けた比較例２の嵌合具は、層間剥離が生じないものの、カール角度が大きく、カールの発生を充分に抑制することができなかった。 As shown in Table 1, an example of a three-layer structure in which intermediate layers are provided on both sides of the area where the male side fitting part and the female side fitting part of the first base material and the second base material exist. Fitting tool No. 1 did not cause delamination, had a small curl angle, and suppressed curling.
On the other hand, the fitting tool of Comparative Example 1 without an intermediate layer and the fitting tool of Comparative Example 2 in which an intermediate layer was provided on the entire first base material and second base material did not cause delamination, but curled. The angle was large, and curling could not be sufficiently suppressed.

１…嵌合具、１０…雄側嵌合部材、１１…第１基材、１１ａ…表面、１１ｂ…反対面、１２…雄側嵌合部、１３…メイン層、１４…シール層、１５…中間層、２０…雌側嵌合部材、２１…第２基材、２１ａ…表面、２１ｂ…反対面、２２…雌側嵌合部、２３…メイン層、２４…シール層、２５…中間層、３０～３２…領域、５０…袋本体、１００…嵌合具付き袋体。 DESCRIPTION OF SYMBOLS 1... Fitting tool, 10... Male side fitting member, 11... First base material, 11a... Surface, 11b... Opposite surface, 12... Male side fitting part, 13... Main layer, 14... Seal layer, 15... Intermediate layer, 20... Female side fitting member, 21... Second base material, 21a... Surface, 21b... Opposite surface, 22... Female side fitting part, 23... Main layer, 24... Seal layer, 25... Intermediate layer, 30 to 32... area, 50... bag body, 100... bag body with fitting tool.

Claims (4)

帯状の第１基材の表面に長手方向に沿って雄側嵌合部が設けられた雄側嵌合部材と、帯状の第２基材の表面に長手方向に沿って雌側嵌合部が設けられた雌側嵌合部材とを備え、前記雄側嵌合部と前記雌側嵌合部が着脱自在に嵌合する嵌合具であって、
前記第１基材及び前記第２基材はそれぞれ、メイン層と、前記メイン層の前記雄側嵌合部及び前記雌側嵌合部とは反対側に設けられたシール層と、前記メイン層と前記シール層の間に設けられた中間層と、を備え、
前記中間層が、前記第１基材及び前記第２基材のそれぞれにおいて、その幅方向における前記雄側嵌合部及び前記雌側嵌合部が存在する領域の両側の領域にそれぞれ配置されており、
嵌合状態の前記嵌合具を長手方向と垂直に切断した切断面において、下記方法（１）により求められる前記雄側嵌合部材のカール角度θ１と、下記方法（２）により求められる前記雌側嵌合部材のカール角度θ２が、いずれも０．５°以上２０°以下であり、
嵌合状態の前記嵌合具を長手方向と垂直に切断した切断面において、下記方法（３）により求められる前記雄側嵌合部材の末端の位置Ｄ３と、下記方法（４）により求められる前記雌側嵌合部材の末端の位置Ｄ５が、いずれも－１．８ｍｍ以上＋０．７５ｍｍ以下である、嵌合具。
方法（１）：
前記雄側嵌合部の幅方向の中心線を直線ｋ１とし、前記第１基材の前記雄側嵌合部が設けられた表面の反対面と前記直線ｋ１との交点を点Ｏ１とし、前記点Ｏ１を通る前記直線ｋ１に直交する直線を基準線ｋ２とする。
前記第１基材の前記直線ｋ１の一方の端部側における、前記第１基材の面上で前記基準線ｋ２との距離が最大となる位置を点Ａ１とする。前記第１基材を前記基準線ｋ２に沿って直線状に延ばした状態の前記第１基材における、前記基準線ｋ２上の前記一方の端部側の端の位置を点Ｃ１とする。前記点Ａ１と前記点Ｏ１を通る直線と、前記基準線ｋ２がなす角度θＡ１（基準線からカールしている方向への角度）を測定する。
前記第１基材の前記直線ｋ１の他方の端部側における、前記第１基材の面上で前記基準線ｋ２との距離が最大となる位置を点Ｂ１とする。前記第１基材を前記基準線ｋ２に沿って直線状に延ばした状態の前記第１基材における、前記基準線ｋ２上の前記他方の端部側の端の位置を点Ｄ１とする。前記点Ｂ１と前記点Ｏ１を通る直線と、前記基準線ｋ２がなす角度θＢ１（基準線からカールしている方向への角度）を測定する。
角度θＡ１と角度θＢ１の平均をカール角度θ１とする。
方法（２）：
前記雌側嵌合部の幅方向の中心線を直線ｋ３とし、前記第２基材の前記雌側嵌合部が設けられた表面の反対面と前記直線ｋ３との交点を点Ｏ２とし、前記点Ｏ２を通る前記直線ｋ３に直交する直線を基準線ｋ４とする。
前記第２基材の前記直線ｋ３の一方の端部側における、前記第２基材の面上で前記基準線ｋ４との距離が最大となる位置を点Ａ２とする。前記第２基材を前記基準線ｋ４に沿って直線状に延ばした状態の前記第２基材における、前記基準線ｋ４上の前記一方の端部側の端の位置を点Ｃ２とする。前記点Ａ２と前記点Ｏ２を通る直線と、前記基準線ｋ４がなす角度θＡ２（基準線からカールしている方向への角度）を測定する。
前記第２基材の前記直線ｋ３の他方の端部側における、前記第２基材の面上で前記基準線ｋ４との距離が最大となる位置を点Ｂ２とする。前記第２基材を前記基準線ｋ４に沿って直線状に延ばした状態の前記第２基材における、前記基準線ｋ４上の前記他方の端部側の端の位置を点Ｄ２とする。前記点Ｂ２と前記点Ｏ２を通る直線と、前記基準線ｋ４がなす角度θＢ２（基準線からカールしている方向への角度）を測定する。
角度θＡ２と角度θＢ２の平均をカール角度θ２とする。
方法（３）：
前記雄側嵌合部の幅方向の中心線を直線ｋ１とし、前記第１基材の前記雄側嵌合部が設けられた表面の反対面と前記直線ｋ１との交点を点Ｏ１とし、前記点Ｏ１を通る前記直線ｋ１に直交する直線を基準線ｋ２とする。
前記第１基材の前記直線ｋ１の一方の端部側で、前記雄側嵌合部材の末端における前記基準線ｋ２から最も離れた位置を点Ａ３とする。前記点Ａ３と前記基準線ｋ２との距離ＤＡ３（ｍｍ）を測定する（ただし、前記基準線ｋ２に対し、前記雄側嵌合部が位置する領域を＋（プラス）とし、前記基準線ｋ２に対し、前記雄側嵌合部の位置する領域の反対側の領域を－（マイナス）とする。）。
前記第１基材の前記直線ｋ１の他方の端部側で、前記雄側嵌合部材の末端における前記基準線ｋ２から最も離れた位置を点Ｂ３とする。前記点Ｂ３と前記基準線ｋ２との距離ＤＢ３（ｍｍ）を測定する（ただし、プラス、マイナスは前記距離ＤＡ３と同様である。）。
前記距離ＤＡ３と前記距離ＤＢ３の平均を求め、その平均値を前記基準線ｋ２に対する前記雄側嵌合部材の末端の位置Ｄ３とする。
方法（４）：
前記雌側嵌合部の幅方向の中心線を直線ｋ３とし、前記第２基材の前記雌側嵌合部が設けられた表面の反対面と前記直線ｋ３との交点を点Ｏ２とし、前記点Ｏ２を通る前記直線ｋ３に直交する直線を基準線ｋ４とする。
前記第２基材の前記直線ｋ３の一方の端部側で、前記雌側嵌合部材の末端における前記基準線ｋ４から最も離れた位置を点Ａ５とする。前記点Ａ５と前記基準線ｋ４との距離ＤＡ５（ｍｍ）を測定する（ただし、前記基準線ｋ４に対し、前記雌側嵌合部が位置する領域を＋（プラス）とし、前記基準線ｋ４に対し、前記雌側嵌合部の位置する領域の反対側の領域を－（マイナス）とする。）。
前記第２基材の前記直線ｋ３の他方の端部側で、前記雌側嵌合部材の末端における前記基準線ｋ４から最も離れた位置を点Ｂ５とする。前記点Ｂ５と前記基準線ｋ４との距離ＤＢ５（ｍｍ）を測定する（ただし、プラス、マイナスは前記距離ＤＡ５と同様である。）。
前記距離ＤＡ５と前記距離ＤＢ５の平均を求め、その平均値を前記基準線ｋ４に対する前記雌側嵌合部材の末端の位置Ｄ５とする。 A male side fitting member is provided with a male side fitting part along the longitudinal direction on the surface of the band-shaped first base material, and a female side fitting part is provided on the surface of the band-shaped second base material along the longitudinal direction. A fitting tool comprising a female side fitting member provided, and in which the male side fitting part and the female side fitting part are removably fitted,
The first base material and the second base material each include a main layer, a seal layer provided on the side opposite to the male side fitting part and the female side fitting part of the main layer, and the main layer. and an intermediate layer provided between the seal layer,
The intermediate layer is disposed in each of the first base material and the second base material in regions on both sides of a region in the width direction where the male side fitting part and the female side fitting part are present. Ori,
On a cut surface of the fitting tool in the fitted state perpendicular to the longitudinal direction, the curl angle θ 1 of the male side fitting member is determined by the following method (1), and the curl angle θ 1 is determined by the following method (2). The curl angle θ 2 of the female side fitting member is 0.5° or more and 20° or less,
In a cut plane obtained by cutting the fitting tool in the fitted state perpendicular to the longitudinal direction, the position D3 of the end of the male side fitting member is determined by the following method (3), and the position D3 is determined by the following method (4). A fitting tool, wherein the position D5 of the end of the female side fitting member is −1.8 mm or more and +0.75 mm or less.
Method (1):
The center line in the width direction of the male side fitting part is a straight line k1, the intersection of the opposite surface of the first base material on which the male side fitting part is provided and the straight line k1 is a point O1, A straight line passing through point O1 and perpendicular to the straight line k1 is defined as a reference line k2.
A point A1 is defined as a position on the surface of the first base material on one end side of the straight line k1 of the first base material, where the distance from the reference line k2 is maximum. The position of the end on the one end side of the reference line k2 of the first base material in a state where the first base material is linearly extended along the reference line k2 is defined as a point C1. The angle θ A1 (angle from the reference line in the curling direction) formed by the reference line k2 and the straight line passing through the point A1 and the point O1 is measured.
A point B1 is defined as a position on the surface of the first base material on the other end side of the straight line k1 of the first base material, where the distance from the reference line k2 is maximum. The position of the end on the other end side of the reference line k2 of the first base material in a state where the first base material is linearly extended along the reference line k2 is defined as a point D1. The angle θ B1 (angle from the reference line in the curling direction) formed by the reference line k2 and the straight line passing through the point B1 and the point O1 is measured.
The average of angle θ A1 and angle θ B1 is defined as curl angle θ 1 .
Method (2):
The center line in the width direction of the female side fitting part is defined as a straight line k3, the intersection of the opposite surface of the second base material to the surface on which the female side fitting part is provided and the straight line k3 is defined as a point O2, A straight line passing through point O2 and perpendicular to the straight line k3 is defined as a reference line k4.
A point A2 is a position on the surface of the second base material on one end side of the straight line k3 of the second base material, where the distance from the reference line k4 is maximum. The position of the end on the one end side of the reference line k4 in the second base material in a state where the second base material is linearly extended along the reference line k4 is defined as a point C2. An angle θ A2 (angle from the reference line in the curling direction) formed by a straight line passing through the point A2 and the point O2 and the reference line k4 is measured.
A point B2 is a position on the surface of the second base material on the other end side of the straight line k3 of the second base material, where the distance from the reference line k4 is maximum. The position of the end on the other end side of the reference line k4 of the second base material in a state where the second base material is linearly extended along the reference line k4 is defined as a point D2. An angle θ B2 (angle from the reference line in the curling direction) formed by the reference line k4 and a straight line passing through the point B2 and the point O2 is measured.
The average of angle θ A2 and angle θ B2 is defined as curl angle θ 2 .
Method (3):
The center line in the width direction of the male side fitting part is a straight line k1, the intersection of the opposite surface of the first base material on which the male side fitting part is provided and the straight line k1 is a point O1, A straight line passing through point O1 and perpendicular to the straight line k1 is defined as a reference line k2.
A point A3 is defined as a position farthest from the reference line k2 at the end of the male side fitting member on one end side of the straight line k1 of the first base material. Measure the distance D A3 (mm) between the point A3 and the reference line k2 (however, with respect to the reference line k2, the area where the male side fitting part is located is + (plus), and the distance D A3 (mm) is On the other hand, the area opposite to the area where the male side fitting part is located is defined as - (minus).
On the other end side of the straight line k1 of the first base material, the position farthest from the reference line k2 at the end of the male side fitting member is defined as point B3. A distance D B3 (mm) between the point B3 and the reference line k2 is measured (however, plus and minus are the same as the distance D A3 ).
The average of the distance D A3 and the distance D B3 is determined, and the average value is set as the position D 3 of the end of the male side fitting member with respect to the reference line k2.
Method (4):
The center line in the width direction of the female side fitting part is defined as a straight line k3, the intersection of the opposite surface of the second base material to the surface on which the female side fitting part is provided and the straight line k3 is defined as a point O2, A straight line passing through point O2 and perpendicular to the straight line k3 is defined as a reference line k4.
A point A5 is a position farthest from the reference line k4 at the end of the female fitting member on one end side of the straight line k3 of the second base material. Measure the distance D A5 (mm) between the point A5 and the reference line k4 (however, the area where the female side fitting part is located is + (plus) with respect to the reference line k4, and the distance D A5 (mm) is measured from the reference line k4. (On the other hand, the area opposite to the area where the female side fitting part is located is - (minus).)
On the other end side of the straight line k3 of the second base material, the position farthest from the reference line k4 at the end of the female side fitting member is defined as point B5. A distance D B5 (mm) between the point B5 and the reference line k4 is measured (however, plus and minus are the same as the distance D A5 ).
The average of the distance D A5 and the distance D B5 is determined, and the average value is set as the position D 5 of the end of the female side fitting member with respect to the reference line k4. 前記シール層が、前記第１基材及び前記第２基材のそれぞれにおいて、その幅方向における前記雄側嵌合部及び前記雌側嵌合部が存在する領域の両側の領域にそれぞれ配置されている、請求項１に記載の嵌合具。 The sealing layer is disposed in each of the first base material and the second base material in regions on both sides of a region in the width direction where the male side fitting part and the female side fitting part are present. The fitting tool according to claim 1. 嵌合状態の前記嵌合具を長手方向と垂直に切断した切断面において、前記方法（３）により求められる前記雄側嵌合部材の末端の位置Ｄ３と、前記方法（４）により求められる前記雌側嵌合部材の末端の位置Ｄ５が、いずれも－１．５ｍｍ以上－０．０１ｍｍ以下である、請求項１又は２に記載の嵌合具。 In a cut plane taken perpendicular to the longitudinal direction of the fitting tool in the fitted state, the position D3 of the end of the male side fitting member determined by the method (3) and the position D3 of the end of the male side fitting member determined by the method (4). The fitting tool according to claim 1 or 2, wherein the position D5 of the end of the female side fitting member is −1.5 mm or more and −0.01 mm or less. 請求項１～３のいずれか一項に記載の嵌合具と、内容物を収容する袋本体と、を備え、
前記嵌合具が前記袋本体の内面に取り付けられている嵌合具付き袋体。 A bag body comprising the fitting tool according to any one of claims 1 to 3 and a bag body containing contents,
A bag body with a fitting tool, wherein the fitting tool is attached to an inner surface of the bag main body.
JP2022058786A 2022-03-31 2022-03-31 Fitting tool and bag body having the same Pending JP2023149951A (en)

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