WO2019153399A1 - 撕裂条撕口机构及制造装置和制造方法 - Google Patents

撕裂条撕口机构及制造装置和制造方法 Download PDF

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Publication number
WO2019153399A1
WO2019153399A1 PCT/CN2018/078285 CN2018078285W WO2019153399A1 WO 2019153399 A1 WO2019153399 A1 WO 2019153399A1 CN 2018078285 W CN2018078285 W CN 2018078285W WO 2019153399 A1 WO2019153399 A1 WO 2019153399A1
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WO
WIPO (PCT)
Prior art keywords
cut
tear strip
film
slit
strip
Prior art date
Application number
PCT/CN2018/078285
Other languages
English (en)
French (fr)
Inventor
田大勇
Original Assignee
竹菱（大连）实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 竹菱（大连）实业有限公司 filed Critical 竹菱（大连）实业有限公司
Priority to JP2019512607A priority Critical patent/JP2020508932A/ja
Priority to US16/488,542 priority patent/US20200002074A1/en
Priority to KR1020197004621A priority patent/KR102144111B1/ko
Publication of WO2019153399A1 publication Critical patent/WO2019153399A1/zh

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Classifications

    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • B65D77/32—Tearing-strings or like flexible elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/02—Tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/812—Applying patches, strips or strings on sheets or webs
    • B31B70/8123—Applying strips
    • 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
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • B26F2210/02—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of stacked sheets

Definitions

  • the present invention relates to a tearing structure of a packaging bag, and more particularly to a tearing strip tearing mechanism, a manufacturing apparatus and a manufacturing method.
  • the technical solution adopted by the present invention to achieve the above object is: a tear strip tearing mechanism, the tear strip is installed in the upper side film of the bag body, including the guide strip and the mounting portion, and the end of the tear strip is torn
  • the mouth mechanism comprises a pulling end and a connecting end, and the pulling end is cut longitudinally by the slitting mechanism, and the edge of the pulling end formed by cutting has a part of the connecting point not cutting, and the pulling end can be pulled up when the external force is pulled, the connecting end
  • the upper side film and the guide strip of the bag body are retained after longitudinal cutting by the slit structure.
  • the shape of the edge one is a butterfly type or a C type.
  • connection points are 2-4.
  • the manufacturing apparatus of the tear strip tearing mechanism includes a slit mechanism, and the slit mechanism is divided into an upper slit portion and a lower slit portion, and the lower end of the upper slit portion is a shape matching of the cutter edge and the edge of the pull-up end.
  • Each of the cutters has a convex portion and a concave portion.
  • the cut convex portion forms a cutting edge, and the concave portion forms a joint point.
  • the upper end of the lower cut portion is a shape in which the cutter 2 matches the shape of the joint end.
  • the cutout portion is below the lower plate, the plate is SiO r nH 2 0 pad.
  • the slit of the cutter 2 has a square tooth shape, which prevents all cut-through, and solves the problem that the bow and the tear strip fall off in the past.
  • the above manufacturing apparatus manufactures a side organ bag tear strip, the tear strip guide strip and the mounting portion are mounted in the upper side film of the bag body, and then the bag body is placed between the upper cut portion and the lower cut portion Pulling up the edge of the end, including the upper film, the guide strip, the mounting portion, the organ face and the lower film, forming an undercut mechanism behind the lower film, while the connecting end only retains the upper film and the guide strip, and is mounted The part, the organ face and the lower film are cut.
  • the principle of forming the inverted buckle is that when the upper cut portion is cut downward, it is in contact with the lower cut portion.
  • the pressure will be transmitted to the backing plate, because the backing plate is soft and deformed under pressure.
  • Side deviation, and the back of the knife 1-1 is 0.5mm above the plane.
  • a force of 0.5Mpa or more is given, the whole knife will be inclined by 5°, and the upper film will be inserted into the bottom side.
  • the bow is relatively flat and does not lift or interfere with other devices, resulting in equipment damage or bag waste.
  • the pull-up end of the bow is formed by the unevenness of the blade and the adhesion is formed. It can be used as anti-counterfeiting and anti-theft function. It can be judged whether the position is opened by the connection of the dotted line of the bow.
  • the bottom of the bag body forms an inverted buckle, and the organ surface is not open, which is more conducive to the suction cup.
  • the slit of the connecting end cutter is square-shaped and tooth-shaped, which prevents all cut-through, and solves the problem that the bow and the tear strip fall off in the past.
  • 1 is a schematic view showing the structure of an organ bag body.
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.
  • FIG. 3 is a schematic structural view of a pull-up end.
  • FIG. 4 is a perspective view showing the structure of a manufacturing apparatus of a tear strip tearing mechanism.
  • FIG. 5 is a cross-sectional view showing the structure of a manufacturing apparatus of a tear strip tearing mechanism.
  • FIG. 6 is a partial enlarged view of a tearing mechanism.
  • FIG. 7 is a partial enlarged view of a conventional tear strip tearing structure.
  • FIG. 8 is a grasping state diagram of a bag body in the production process of the present invention.
  • FIG. 9 is a grasping state diagram of a conventional bag body production process.
  • FIG. 10 is a schematic view of a tearing mechanism when the organ face is opened.
  • FIG. 11 is a schematic view of an inverted structure.
  • FIG. 12 is a schematic view of a slit of the cutter.
  • a tear strip tearing mechanism is installed in the upper film 131 of the bag body, and includes a guiding strip 111 and a mounting portion 121.
  • the tearing mechanism of the end of the tear strip includes The pull-up end 211 and the connecting end 231 are cut longitudinally by the slit mechanism.
  • the pull-up end 211 formed by cutting has a butterfly-shaped edge 2111 having three connection points 2112 not cut. When the external force is pulled, the pull-up end 211 is pulled. It can be pulled up, and the connecting end 231 is longitudinally cut by the slit structure to retain the upper film 131 and the guide strip 111 of the bag body.
  • the apparatus for manufacturing the tear strip tearing mechanism includes a slit mechanism, and the slit mechanism is divided into an upper cut portion 1 and a lower cut portion 2, and the lower end of the upper cut portion is a cutter
  • the shape of the 311 is matched with the edge of the pull-up end 2111.
  • the cutter has a convex portion 3111 and a concave portion 3112.
  • the cut convex portion forms a cutting edge
  • the concave portion forms a joint point
  • the upper end of the lower cut portion is a cutter 2 511 matches the shape of the connector.
  • Below the lower cut portion is a backing plate 3 which is a SiO 2 —nH 2 0 backing plate. Two said cutter tooth squat square cutout, to prevent the entire cut through, to solve the problem caused by the conventional word bow cut through the tear strip is detached, °
  • the above manufacturing apparatus manufactures a side organ bag tear strip, the tear strip guide strip and the mounting portion are mounted in the upper side film of the bag body, and then the bag body is placed between the upper cut portion and the lower cut portion Pulling up the edge of the end, including the upper film, the guide strip, the mounting portion, the organ face and the lower film, forming an undercut mechanism behind the lower film, while the connecting end only retains the upper film and the guide strip, and is mounted The part, the organ face and the lower film are cut.
  • the principle of forming the inverted buckle is that when the upper cut portion is cut downward, it is in contact with the lower cut portion.
  • the bow is relatively flat as shown in Figures 6 and 8, and does not lift or interfere with other devices, resulting in equipment damage or bag waste.
  • the pull-up end of the bow is formed by the unevenness of the blade to form a joint, which can be used as anti-counterfeiting and anti-theft function. It is judged whether the position is opened by the connection of the dotted line of the bow.
  • the bottom of the bag body forms an inverted buckle form, and the organ surface is not open, which is more conducive to The suction cup is grabbed, as shown in Figures 10 and 11.
  • the slit of the connecting end cutter is square-shaped, which prevents all cut-through, and solves the problem that the bow and the tear strip fall off in the past, as shown in Fig. 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Making Paper Articles (AREA)
  • Housing For Livestock And Birds (AREA)
  • Bag Frames (AREA)

Abstract

一种撕裂条撕口机构及制造装置和制造方法，撕口机构包括拉起端（211）和连接端（231），由切割形成的拉起端（211）边缘有部分连接点不切割。在制袋过程中，蝴蝶型的拉起端（211）比较平整，不会翘起或与其他装置干涉，造成设备损坏或袋子废品。蝴蝶型的拉起端（211）由刀刃凸凹不平形成黏连的连接点，可作为防伪和防盗作用，通过蝴蝶结虚线点的连接来判断此位置是否被打开过。袋体底部形成倒扣形式，风琴面不张开，也更利于吸盘抓取。连接端（231）切刀的切口为方形锯齿状，防止全部切穿，解决了以往一字过切造成蝴蝶结与撕裂条脱落的问题。

Description

发明名称:撕裂条撕口机构及制造装置和制造方法
技术领域
[0001] 本发明涉及一种包装袋的撕裂结构， 具体是一种撕裂条撕口机构及制造装置和 制造方法。
背景技术
[0002] 现有的蝴蝶结撕口为全切方式， 生产过程中蝴蝶结翘起， 叠放时容易倾斜， 不 易于吸盘抓取， 直接影响下道工序， 容易形成袋子废品和设备损坏， 如图 9所示
发明概述
技术问题
问题的解决方案
技术解决方案
[0003] 本发明为实现上述目的所采用的技术方案是： 撕裂条撕口机构， 撕裂条安装在 袋体上侧溥膜内， 包括导向条和安装部， 撕裂条端部的撕口机构包括拉起端和 连接端， 拉起端由切口机构纵向切穿， 由切割形成的拉起端边缘一有部分连接 点不切割， 当外力拉扯后拉起端可被拉起， 连接端由切口结构纵向切割后保留 袋体上侧薄膜和导向条。
[0004] 进一步地， 所述边缘一的形状为蝴蝶型或者 C型。
[0005] 进一步地， 所述连接点为 2-4个。
[0006] 上述撕裂条撕口机构的制造装置， 包括切口机构， 所述切口机构分为上切口部 和下切口部， 上切口部的下端是切刀一与拉起端边缘一形状匹配， 所述切刀一 切口有凸部和凹部， 切割后凸部形成切割边缘一， 凹部形成连接点， 所述下切 口部的上端是切刀二与连接端形状匹配。
[0007] 进一步地， 下切口部的下方是垫板， 所述垫板为 SiO rnH 20垫板。
[0008] 进一步地， 所述切刀二的切口为方形踞齿状， 防止全部切穿， 解决了以往一字 过切造成蝴蝶结与撕裂条脱落的问题。 [0009] 上述制造装置制造侧风琴袋体撕裂条的方法， 将撕裂条导向条和安装部安装在 袋体上侧薄膜内， 然后将袋体置于上切口部和下切口部之间， 拉起端边缘一切 穿， 包括依次为上侧薄膜、 导向条、 安装部、 风琴面和下侧薄膜， 在下侧薄膜 后面形成倒扣机构， 而连接端只保留上侧薄膜和导向条， 安装部、 风琴面和下 侧薄膜切断。 形成倒扣的原理是当上切口部向下切时与下切口部接触， 在下切 口部受到上切口部一定的作用力下， 将会把压力传递给垫板， 因垫板比较软， 受压变形侧偏， 并且刀 1-1背面高出平面 0.5mm， 当给予 0.5Mpa以上的力时， 刀 整体会形成倾斜 5°， 将上侧薄膜插入底侧， 具体见 125 , 形成袋体倒扣 发明的有益效果
有益效果
[0010] 在制袋过程中， 蝴蝶结比较平整， 不会翘起或与其他装置干涉， 造成设备损坏 或袋子废品。 蝴蝶结拉起端由刀刃凸凹不平形成黏连的连接点， 可作为防伪和 防盗作用， 通过蝴蝶结虚线点的连接来判断此位置是否被打开过。 袋体底部形 成倒扣形式， 风琴面不张开， 也更利于吸盘抓取。 连接端切刀的切口为方形踞 齿状， 防止全部切穿， 解决了以往一字过切造成蝴蝶结与撕裂条脱落的问题。 对附图的简要说明
附图说明
[0011] 图 1是风琴袋体结构示意图。
[0012] 图 2是图 1 A— A方向剖视图。
[0013] 图 3是拉起端结构示意图。
[0014] 图 4是撕裂条撕口机构的制造装置结构立体图。
[0015] 图 5是撕裂条撕口机构的制造装置结构剖视图。
[0016] 图 6是撕口机构局部放大图。
[0017] 图 7是现有的撕裂条撕口结构局部放大图。
[0018] 图 8是本发明袋体生产过程中抓取状态图。
[0019] 图 9是以往袋体生产过程中抓取状态图。
[0020] 图 10是风琴面张开时撕口机构示意图。
[0021] 图 11是倒扣结构示意图。 [0022] 图 12是切刀二切口示意图。
发明实施例
本发明的实施方式
[0023] 下面结合具体实施例对本发明作进一步解释说明。
[0024] 如图 1-3所示， 撕裂条撕口机构， 撕裂条安装在袋体上侧薄膜 131内， 包括导向 条 111和安装部 121， 撕裂条端部的撕口机构包括拉起端 211和连接端 231， 拉起 端 211由切口机构纵向切穿， 由切割形成的拉起端 211蝴蝶型边缘一 2111有 3个连 接点 2112不切割， 当外力拉扯后拉起端 211可被拉起， 连接端 231由切口结构纵 向切割后保留袋体上侧薄膜 131和导向条 111。
[0025] 上述撕裂条撕口机构的制造装置， 如图 4和图 5， 包括切口机构， 所述切口机构 分为上切口部 1和下切口部 2, 上切口部的下端是切刀一 311与拉起端边缘一 2111 形状匹配， 所述切刀一切口有凸部 3111和凹部 3112, 切割后凸部形成切割边缘 一， 凹部形成连接点， 所述下切口部的上端是切刀二 511与连接端形状匹配。 下 切口部的下方是垫板 3， 所述垫板为 SiO 2_nH 20垫板。 所述切刀二的切口为方形 踞齿状， 防止全部切穿， 解决了以往一字过切造成蝴蝶结与撕裂条脱落的问题 ， °
[0026] 上述制造装置制造侧风琴袋体撕裂条的方法， 将撕裂条导向条和安装部安装在 袋体上侧薄膜内， 然后将袋体置于上切口部和下切口部之间， 拉起端边缘一切 穿， 包括依次为上侧薄膜、 导向条、 安装部、 风琴面和下侧薄膜， 在下侧薄膜 后面形成倒扣机构， 而连接端只保留上侧薄膜和导向条， 安装部、 风琴面和下 侧薄膜切断。 形成倒扣的原理是当上切口部向下切时与下切口部接触， 在下切 口部受到上切口部一定的作用力下， 将会把压力传递给垫板， 因垫板比较软， 受压变形侧偏， 并且切刀一 1-1背面高出平面高度 h为 0.5mm， 当给予 0.5Mpa以上 的力时， 刀整体会形成倾斜 5°， 将上侧薄膜插入底侧， 形成袋体倒扣结构 125。
[0027] 本发明袋子制作的优点是： 在制袋过程中， 蝴蝶结比较平整如图 6和图 8 , 不会 翘起或与其他装置干涉， 造成设备损坏或袋子废品。 蝴蝶结拉起端由刀刃凸凹 不平形成黏连的连接点， 可作为防伪和防盗作用， 通过蝴蝶结虚线点的连接来 判断此位置是否被打开过。 袋体底部形成倒扣形式， 风琴面不张开， 也更利于 吸盘抓取， 如图 10和图 11。 连接端切刀的切口为方形踞齿状， 防止全部切穿， 解决了以往一字过切造成蝴蝶结与撕裂条脱落的问题， 如图 12。
[0028] 以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不局限于 此， 任何熟悉本技术领域的技术人员在本发明披露的技术范围内， 根据本发明 的技术方案及其构思加以等同替换或改变， 都应涵盖在本发明的保护范围之内

Claims

权利要求书
[权利要求 1] 撕裂条撕口机构， 其特征在于， 撕裂条安装在袋体上侧薄膜内， 包括 导向条和安装部， 撕裂条端部的撕口机构包括拉起端和连接端， 拉起 端由切口机构纵向切穿， 由切割形成的拉起端边缘一有部分连接点不 切割， 当外力拉扯后拉起端可被拉起， 连接端由切口结构纵向切割后 保留袋体上侧薄膜和导向条。
[权利要求 2] 根据权利要求 i所述的撕裂条撕口机构， 其特征在于， 所述边缘一的 形状为蝴蝶型或者 c型。
[权利要求 3] 根据权利要求 1所述的撕裂条撕口机构， 其特征在于， 所述连接点为 2
-4个。
[权利要求 4] 如权利要求 1-3所述的撕裂条撕口机构的制造装置， 其特征在于， 包 括切口机构， 所述切口机构分为上切口部和下切口部， 上切口部的下 端是切刀一与拉起端边缘一形状匹配， 所述切刀一切口有凸部和凹部 ， 切割后凸部形成切割边缘一， 凹部形成连接点， 所述下切口部的上 端是切刀二与连接端形状匹配。
[权利要求 5] 根据权利要求 4所述的撕裂条撕口机构的制造装置， 其特征在于， 下 切口部的下方是垫板， 所述垫板为 SiO rnH 20垫板。
[权利要求 6] 根据权利要求 4所述的撕裂条撕口机构的制造装置， 其特征在于， 所 述切刀二的切口为方形踞齿状， 防止切穿。
[权利要求 7] 采用如权利要求 4-6任一项所述的制造装置制造侧风琴袋体撕裂条的 方法， 其特征在于， 将撕裂条导向条和安装部安装在袋体上侧薄膜内 ， 然后将袋体置于上切口部和下切口部之间， 拉起端边缘一切穿， 包 括依次为上侧薄膜、 导向条、 安装部、 风琴面和下侧薄膜， 在下侧薄 膜后面形成倒扣机构， 而连接端只保留上侧薄膜和导向条， 安装部、 风琴面和下侧薄膜切断。
PCT/CN2018/078285 2018-02-11 2018-03-07 撕裂条撕口机构及制造装置和制造方法 WO2019153399A1 (zh)

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