JP2006168734A - 密封容器 - Google Patents

密封容器 Download PDF

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Publication number
JP2006168734A
JP2006168734A JP2004359185A JP2004359185A JP2006168734A JP 2006168734 A JP2006168734 A JP 2006168734A JP 2004359185 A JP2004359185 A JP 2004359185A JP 2004359185 A JP2004359185 A JP 2004359185A JP 2006168734 A JP2006168734 A JP 2006168734A
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Prior art keywords
welded
sheet
welding
container
horn
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Hiromi Otsuki
裕美 大槻
Minoru Usami
穣 宇佐美
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Ricoh Co Ltd
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Ricoh Co Ltd
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Priority to JP2004359185A priority Critical patent/JP2006168734A/ja
Priority to US11/298,719 priority patent/US20060124652A1/en
Publication of JP2006168734A publication Critical patent/JP2006168734A/ja
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • 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
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Closures For Containers (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

【課題】 溶着度判定用の目印がなくても、精度よく容器本体とシートを溶着することができる密封容器を提供する。
【解決手段】 容器本体１と、その投入口２を封止するシート３を溶着した密閉容器６において、溶着部４１は、多数の多角形が隣接しかつ他の部分より凹んだ形状とした。
【選択図】 図３

Description

本発明は、密封容器及び密封容器の封止方法（密封容器における密封用シートによる容器本体の封止方法）に関する。
後述するように、容器本体と、その投入口を密封するシートとから構成されている密封容器が知られている。その製造工程における容器本体に対するシートによる封止に際しては、容器本体の投入口を覆う形状のシートを投入口に被せ、投入口周囲全周にわたり、容器本体とシートを、加熱されたホーンにより押圧し溶着する工程が実施される。または超音波振動を与えたホーンを押圧し溶着する工程が採用される。
上記製造方法における溶着では、溶着の効率を高めるためホーンの押圧面の表面形状は溝状、または図８、図９に示す通り多数の多角錐を集積した形状となっている。符号６はホーン、６２は凸部を示す。
しかしこのような形状では、ホーン押圧面の凸部６２が被溶着物に不連続に点状に接触、押圧することになり（被溶着物側は凹部）、溶着されにくいホーン押圧面の凹部（被溶着物側は凸部）が線状になるため、希に溶着不完全部分が連続し容器本体内外間で内部に投入された物質の外部へのリーク、または外部物質の内部への侵入を生じることがあった。
上記不具合を解消するため、例えば、特許文献１記載の技術が提案されている。当該特許には、ホーン押圧面に溶着度判定用の目印を設け、溶着度良否の判断を容易にする旨が記載されている。
特許第２９３４１２９号
上記従来技術の場合、ホーン押圧面に溶着度判定用の目印を設けなくてはならず、製造工程が多くなり、コスト高になるという欠点があった。
本発明は、溶着度判定用の目印がなくても、精度よく容器本体とシートを溶着することができる密封容器を提供することを目的とする。
上記目的を達成するために、請求項１記載の発明は、容器本体と、該容器本体の開口を封止するシートを溶着した密閉容器において、該容器本体と該シートとの溶着部は、互いに交差する溶着線によって形成される多数の多角形部が隣接した構成を有し、かつ該溶着線が該多角形状部より凹んだ形状であることを特徴とする。
請求項２の発明は、請求項１に記載の密閉容器の溶着に用いるホーンは、前記溶着線に対応した形状を有した押圧部を有していることを特徴とする。
本発明では、容器本体と、その投入口を封止するシートを溶着した密閉容器において、溶着部は、溶着用のホーン先端の押圧部によって線状に溶着される溶着線を網目状に構成することによって、多数の多角形部（非溶着部）が隣接し、かつ溶着線が他の部分より凹んだ形状としているので、溶着線の一部が溶着不良となっても、他の部分が溶着状態を維持する限り、内容物の漏れだしが防止できる。
以下、本発明の実施の形態を図面に従って説明する。
図１は本発明の実施の形態に係る密封容器の製造工程（封止工程）の説明図、図２は本発明の実施の形態に係る密封容器の断面図である。
図１に示すように、密封容器の製造（封止）に際しては、容器本体１の投入口（開口部）２を覆う形状のシート３を投入口２に被せ、投入口２の周囲１ａ全周にわたり、容器本体１とシート３を、加熱されたホーン（後述する）によりＡ方向に押圧し溶着する工程が採用される。符号４は溶着代を示す。
その結果、図２に示すように、容器本体１と、その投入口２を密封するシート３とからなる密封容器５が構成される。符号４１は、容器本体、及び／又はシートが溶融した後で硬化した溶着部である。
図３、図４、図５は本発明の実施の形態に係る密封容器における溶着代の平面図である。溶着部４１は、縦横に交差して配置された線状の溶着線４１ａと、溶着線４１ａによって包囲された多角形状部（非溶着部）４１ｂが網目形状に隣接配置された構造になっている。図３は正方形等の矩形、図４は六角形、図５は三角形を示しているが、これらは一例に過ぎない。
密閉容器５が作製されるにあたっては、図２に示すように、グラスファイバ（ＧＦ１５）を含有したＰＥＴ樹脂製の容器本体の投入口２を覆う形状のＰＥＴのシート（厚さ０．１ｍｍ）３を投入口２に被せ、投入口周囲全周にわたり、容器本体１とシート３面を、２２０℃まで加熱されたアルミ製ホーン６（図６）の細幅突起状（線状）の押圧部６１によりＡ方向から押圧し、シート３が容器本体１と接触した後は０．８ｋｇｆの荷重で２０秒間押圧し溶着代４を形成し溶着する。押圧部６１により押圧することによって、線状の溶着線４１ａと、多角形状部４１ｂが被溶着物上に同時に形成される。
または２１ｋＨｚの振動数で超音波振動を加えられるチタン製のホーン６をＡ方向から押圧し、シート３が容器本体１と接触した後は０．４ｋｇｆで０．１秒保持する。その後、超音波振動によるエネルギーを与えながら、シート３が容器本体１と接触した際のホーン高さを０基準とし、後述する図７に示す押圧部の長さｄの８０％にあたる０．８ｍｍまでホーン６を食い込ませて溶着する。
容器本体１、シート３の材料としては、ＡＢＳ、ＰＣ、ＰＭＭＡ、ＰＥＩ、ＰＥＳ、ＰＯＭ、ＰＥ、ＰＰなどがあり、容器本体１とシート３は同種の材料であることが最も適している。
図６は本発明の実施の形態に係る密封容器におけるホーンとその周囲の断面図、図７は図６のＢ部を拡大してその寸法関係を示す説明図である。
溶着代４を押圧するホーン６の押圧部６１の先端面の形状を、目的とする網目状に交差した溶着線４１ａと同形状とし、縦横に連続した凸形状としている。また、図７に示すとおり、ホーン６の押圧部６１の寸法は、押圧部基部幅の寸法ａと押圧部先端部幅の幅ｂとの関係が、ａ≦ｂとなるように設定されている。すなわち、ホーン６を被溶着部に押圧し、食い込んで行く際における押圧部６１の被溶着物へ接触面積は一定となるようにしている。
以上の構成を有した容器本体１内にシリコーンオイルを投入し、上記方法で投入口２周囲をシート３で溶着した密封容器５を、０．８５気圧の減圧環境下に、シート３が側面を向くように横置きして放置したところ、内部のシリコーンオイルが外部へリークする不具合は一切生じなかった。
本発明では、溶着代４の溶着部４１の形状を、溶着線４１ａによって形成された多数の多角形部４１ｂが隣接し、連続した網目形状としているので、容器本体１の溶着代となる表面における微細な欠け、異物の存在によって溶着部４１の一部分（溶着線４１ａの一部分）に溶着が不完全な部分が生じても、溶着状態にある他の溶着線の網目形状により、溶着が不完全な部分を補完することができ、溶着代４全体として容器内外間で生じるリークを防止することが可能な密閉性の高い密封容器を提供することができる。
また、押圧するホーン６の押圧部６１の形状をａ≦ｂとしておくことにより、溶着時にホーン６の押圧部６１と被溶着物の接触面積は、ホーン６の被溶着物への喰込によらず一定となるので、押圧時に圧力が分散することなく、溶着部４１に、溶着が不完全な部分を発生させることがない。
本発明の実施の形態に係る密封容器の製造工程（封止工程）の説明図。 本発明の実施の形態に係る密封容器の断面図。 本発明の実施の形態に係る密封容器における溶着代の平面図（その１）。 本発明の実施の形態に係る密封容器における溶着代の平面図（その２）。 本発明の実施の形態に係る密封容器における溶着代の平面図（その３）。 本発明の実施の形態に係る密封容器におけるホーンとその周囲の断面図。 図６のＢ部を拡大してその寸法関係を示す説明図。 従来のホーンの斜視図。 図８のＣ視図。
符号の説明
１ 容器本体、２ 投入口、３ シート、４ 溶着代、４１ 溶着部、５ 密封容器、６ ホーン、６１ 押圧部

Claims (2)

  1. 容器本体と、該容器本体の開口を封止するシートを溶着した密閉容器において、該容器本体と該シートとの溶着部は、互いに交差する溶着線によって形成される多数の多角形部が隣接した構成を有し、かつ該溶着線が該多角形状部より凹んだ形状であることを特徴とする密閉容器。
  2. 請求項１に記載の密閉容器の溶着に用いるホーンは、前記溶着線に対応した形状を有した押圧部を有していることを特徴とする密閉容器。
JP2004359185A 2004-12-10 2004-12-10 密封容器 Pending JP2006168734A (ja)

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USD896633S1 (en) 2019-01-29 2020-09-22 Golden State Foods Corp. Container

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JP2009214924A (ja) * 2008-03-12 2009-09-24 Kanae Co Ltd 密閉容器、その製造方法、それを製造する金型及び接続構造
JP2020006993A (ja) * 2018-07-06 2020-01-16 凸版印刷株式会社 蒸気抜き機構付きスタンディングパウチおよび蒸気抜き機構付きスタンディングパウチの製造方法

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