JPS5915041A - Sealed vessel - Google Patents

Sealed vessel

Info

Publication number
JPS5915041A
JPS5915041A JP57118430A JP11843082A JPS5915041A JP S5915041 A JPS5915041 A JP S5915041A JP 57118430 A JP57118430 A JP 57118430A JP 11843082 A JP11843082 A JP 11843082A JP S5915041 A JPS5915041 A JP S5915041A
Authority
JP
Japan
Prior art keywords
heat
wall
metal foil
laminate
circumferential edge
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP57118430A
Other languages
Japanese (ja)
Other versions
JPS6229302B2 (en
Inventor
文雄 生島
伊藤　宣二
小柏　清則
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teac Corp
Original Assignee
Teac Corp
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 Teac Corp filed Critical Teac Corp
Priority to JP57118430A priority Critical patent/JPS5915041A/en
Priority to DE19833323644 priority patent/DE3323644A1/en
Priority to FR8310860A priority patent/FR2531929B1/en
Priority to GB08317741A priority patent/GB2124997B/en
Priority to KR1019830003131A priority patent/KR840005408A/en
Publication of JPS5915041A publication Critical patent/JPS5915041A/en
Priority to US06/829,938 priority patent/US4692132A/en
Publication of JPS6229302B2 publication Critical patent/JPS6229302B2/ja
Granted legal-status Critical Current

Links

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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
    • B65D3/12—Flanged discs permanently secured, e.g. by adhesives or by heat-sealing
    • B65D3/14—Discs fitting within container end and secured by bending, rolling, or folding operations
    • 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
    • B65D88/00—Large containers
    • B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
    • B65D88/42—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)
  • Glass Compositions (AREA)
  • Table Devices Or Equipment (AREA)
  • Devices For Use In Laboratory Experiments (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は密封容器に関するもので、より詳細には、紙及
び金属基質金倉むラミネートから形成された１≦１状乃
至デーバー状胴部と蓋体とから成り、これらのヒートシ
ール部での密封性能が顕著に向上したスリーピース構造
の密封容器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hermetically sealed container, and more particularly, it is comprised of a 1≦1-shaped or debar-shaped body and a lid formed from a laminate of paper and a metal substrate. The present invention relates to a sealed container with a three-piece structure in which the sealing performance at the heat-sealed portion is significantly improved.

従来、紙基質及び金属箔を備え目つ内外両面にヒートシ
ール性樹脂を備えた積層シートは、保存性に優れた紙容
器の素材として広く使用されている○この積層シートを
密封容器にするには、積層シートの端縁同志を重ね合せ
てヒートシールすることにより筒状乃至はテーパー状の
胴部とし、この胴部の少なくとも一方の１３ｊｌ　ＩＴ
Ｊ端縁において蓋をヒートシールにより密着さぜる。Conventionally, laminated sheets with a paper substrate and metal foil and heat-sealable resin on both the inside and outside of the eye have been widely used as a material for paper containers with excellent shelf life. The edges of the laminated sheets are overlapped and heat-sealed to form a cylindrical or tapered body, and at least one of the 13jl IT
Heat seal the lid tightly at the J edge.

しかしながら、このようなヒートシール構造の密封容器
においては、胴部と否との係合密封を確実に行うことが
屡々困難であるという問題がある。However, in a sealed container having such a heat seal structure, there is a problem in that it is often difficult to reliably engage and seal the body and the container.

即ち、金１４６ｉｌｌｌのようなリジッドで加工作のあ
る素利で乾１：、何ｍ胴フランジと鑵蓋周縁部とをシー
リング・コンパウンドを介して係合させ、しかもこのフ
ランジと端蓋周縁部とを二重巻締させることにより確実
な密封が可能となるが、紙を含む積１θシートの場合は
このような二重巻締操作は不可能であり、ヒートシール
による密封を行わねばならないために次の欠点を生じる
。先ず、第一に、ヒートシールによる密＠は袋状容器の
端部の密封や筒体の側面継目の形成のように、接合すべ
き部分が真直で平板状の場合には、操作も比較的容易で
しかも信頼性の高い密封が得られるとしても、筒状胴部
の開口端縁と蓋体周縁部との場合のように、ヒートシー
ルすべき部分が立体状でしかも十分な面積を確保できな
い場合には、ヒートシール操作そのものが必らずしも容
易ではなく、更にヒートシール部全周にわたって確実で
信頼性のある密封を形成させることが困難となる。That is, using a material made of rigid material such as 146ill gold and having a machined finish, the body flange and the periphery of the chisel lid are engaged with each other through a sealing compound, and this flange and the periphery of the end lid are Reliable sealing is possible by double-sealing, but such double-sealing is impossible for 1θ sheets containing paper, and sealing must be done by heat sealing. This results in the following drawbacks. First of all, heat sealing is relatively easy to operate when the parts to be joined are straight and flat, such as when sealing the end of a bag-like container or forming a side seam on a cylinder. Even if easy and reliable sealing can be achieved, the area to be heat-sealed is three-dimensional and a sufficient area cannot be secured, as in the case of the opening edge of the cylindrical body and the peripheral edge of the lid. In such cases, the heat-sealing operation itself is not necessarily easy, and furthermore, it is difficult to form a secure and reliable seal around the entire circumference of the heat-sealed portion.

捷た、紙基質を備えたラミネートをヒートシールさせて
成る接合容器の場合には、樹脂層のヒートシール時の加
熱により、紙基質中の吸着水分が蒸発してヒートシール
樹脂層の発泡を生じ、ヒートシール部の密封性能が一層
低下することになる。In the case of a bonded container made by heat-sealing a laminate with a shredded paper substrate, the heating during heat-sealing of the resin layer evaporates adsorbed moisture in the paper substrate, causing foaming of the heat-sealed resin layer. , the sealing performance of the heat-sealed portion will further deteriorate.

更に、この複合容器においては、積層体の切断端縁部が
胴部の開口端に露出するときには、との紙基質の露出部
を通して、水や水蒸気の浸透を生じ、とれにより容器の
形態保持性、機械的強度或いは内容物の保存性等が失わ
れるという問題も生じるととになる。Furthermore, in this composite container, when the cut edge of the laminate is exposed at the open end of the body, water and water vapor permeate through the exposed portion of the paper substrate, which deteriorates the shape retention of the container. This also causes problems such as loss of mechanical strength or storage stability of the contents.

従って、本発明の目的は、紙及び金属基質を含むラミネ
ートから形成された筒状乃至はテーパー状の胴部と蓋体
とから成り、これらのヒートシール部での密封性能が顕
著に向上したスリーピース構造の密封容器を提供するに
ある。Therefore, an object of the present invention is to provide a three-piece structure comprising a cylindrical or tapered body and a lid formed from a laminate containing paper and a metal substrate, and which has significantly improved sealing performance at the heat-sealed portion. The structure is to provide a sealed container.

本発明の他の目的は、前記筒状乃至テーパー状の胴部の
周状端縁部と蓋体周縁部との間に、強固でしかも確実な
ヒートシールてよる密封構造が形成され、積層体切断端
縁における紙基質露出の問題や紙基質からの水蒸気発生
によるヒートシール層発泡の問題も有効に解消された密
封容器を提供するにある。Another object of the present invention is to form a strong and reliable sealing structure by heat sealing between the circumferential edge of the cylindrical or tapered body and the circumferential edge of the lid, and to form a laminate. It is an object of the present invention to provide a sealed container in which the problem of paper substrate exposure at the cut edge and the problem of foaming of the heat seal layer due to generation of water vapor from the paper substrate are effectively solved.

本発明によれば、紙基質及び金属箔を備え且つ両面にヒ
ートシール性樹脂層を有する積層体を金属箔が内側及び
紙基質が外側となるように筒状乃至テーパー状に成形し
て成る胴部、前記Ｉ１１．・１部の少なくとも一方の開
口端部において前記積層体を金属′Ｙ）Ｊが外側となる
ようにカールさせ且つ積層体の切断端縁をカール部内に
包み込んだ三ＴＪ％壁木１弄造の周状の端縁部、及びヒ
ートシール性樹脂層と金属箔との積層体から成り且つ前
記周状端縁部とヒートシール性Ｍ旧層を弁して係合さぜ
る周辺部を備えた蓋体から成り、前記蓋体周辺部は周状
端縁部が挿入される周状のｍを有し、該溝の内壁乃至土
壁と前記周状端縁部の最内壁乃至最上壁との間、該溝の
外壁乃至下壁と前記周状端縁の最外壁乃至最下壁との間
及び前記周状端縁の最内壁乃至最上壁と中間壁との間で
夫々ヒートシールによる密封が行われていることを特徴
とするＹｔ１封矛ト器が提供される。According to the present invention, the body is formed by forming a laminate including a paper substrate and a metal foil and having heat-sealable resin layers on both sides into a cylindrical or tapered shape with the metal foil on the inside and the paper substrate on the outside. Part, I11.・3TJ% wall wood 1 construction in which the laminate is curled so that the metal 'Y)J is on the outside at at least one open end of the 1 part, and the cut edge of the laminate is wrapped in the curled part. It has a circumferential edge, and a peripheral part that is made of a laminate of a heat-sealable resin layer and a metal foil and engages the circumferential edge and the heat-sealable M old layer. The peripheral part of the lid body has a circumferential shape m into which the circumferential edge part is inserted, and the inner wall or earth wall of the groove and the innermost wall to the uppermost wall of the circumferential edge part are connected to each other. Between the outer wall or the lower wall of the groove and the outermost wall or the lowermost wall of the circumferential edge, and between the innermost wall or the uppermost wall of the circumferential edge and the intermediate wall, sealing is performed by heat sealing, respectively. A Yt1 sealant is provided which is characterized in that:

本発明を以下に、添付図面に示す具体例に基づき詳細に
説明する。The present invention will be explained in detail below based on specific examples shown in the accompanying drawings.

本発明の密封容器の全体の構成を示す第１図において、
この密封容器は、両端が開口している筒状の胴部１とこ
の筒状胴部の両開［１部にヒートシール部２を介Ｌ７て
密封係合された蓋体６，６とから成っている。In FIG. 1 showing the overall structure of the sealed container of the present invention,
This sealed container consists of a cylindrical body 1 with both ends open, and lids 6, 6 which are sealed at both ends of the cylindrical body through a heat seal part 2 (L7). It has become.

この蓋体６のヒートシール前の嵌合状態を拡大して示す
第２図において、筒状胴部１を形成する積層体４は、紙
基質５及び金属箔６を備え、その両面にはヒートシール
性樹脂層７ａ、７ｈが設けられている。第２図に示す具
体例では紙基質５と金属箔６ともヒートシール性梯１脂
Ｎ７ｃを介１７て貼合わされている。In FIG. 2, which shows an enlarged view of the fitted state of the lid 6 before heat sealing, the laminate 4 forming the cylindrical body 1 includes a paper substrate 5 and a metal foil 6, both of which are heated. Sealing resin layers 7a and 7h are provided. In the specific example shown in FIG. 2, the paper substrate 5 and the metal foil 6 are bonded together via a heat-sealable ladder 1 resin N7c.

本発明の密封容器の胴部においては、内容物保存性の見
地から、金属箔６が容器内ｌＴｉ１ｌ、紙糸）Ｒ５が容
器外側となるように配置されており、かくして、第２図
に示す具体例で１は、内かり側へ向けて、ヒートシール
性樹脂層７σ、金）べ箔６、ヒートシール性樹脂層７　
ｃ、紙糸’ｉ’ｔ　５及びヒートシール性樹脂層７ｈの
層構成となっている。In the body of the sealed container of the present invention, from the viewpoint of preserving the contents, the metal foil 6 is arranged inside the container and the paper thread R5 is outside the container, as shown in FIG. In a specific example, 1 has a heat-sealable resin layer 7σ, a gold foil 6, and a heat-sealable resin layer 7 toward the inner side.
c, paper yarn 'i't 5, and a heat-sealable resin layer 7h.

本発明においては、胴部の両開１］端部において、第２
図に示すように、積層体４を、金属箔６が紙基質５より
も外側となるように、外向きにカールさせ、しかも積層
体４の切断端縁８１ｒ、このカール部内に包み込んで三
重壁構造、即ち最内壁９、最外壁１０及びこれらの中間
壁１１から成る周状端縁部１２を形成させる。この周状
端縁部１２は、この段階では、断面がリング状で内Ｓは
閉じた空隙１３となっており、切断端縁８はこの空隙１
ろ内に露出している。In the present invention, the second
As shown in the figure, the laminate 4 is curled outward so that the metal foil 6 is on the outside of the paper substrate 5, and the cut edge 81r of the laminate 4 is wrapped inside this curled part to form a triple wall. A structure is formed, namely a circumferential edge 12 consisting of an innermost wall 9, an outermost wall 10 and an intermediate wall 11 thereof. At this stage, this circumferential edge portion 12 has a ring-shaped cross section and a closed gap 13 inside S, and the cut edge 8 has a ring-shaped cross section and a closed gap 13.
Exposed inside.

一方、蓋体３を構成する積層体１４も金属箔６と金属箔
６に対して内面側となるように設けられたヒートシール
性樹脂層７ｄとから構成され、金属箔６の外面側には樹
脂保画層１５が設けられている。蓋体６の周辺部には、
内壁１６と外壁１７の間に形成された断面がＵ字型の周
状溝１８があり、この溝１８内に筒状胴部１の周状端縁
部１２が挿入されて、蓋体６と筒状胴部１との係合が行
われる。この状態で蓋体６の内壁１６と外壁１７とを径
方向に押圧して、筒状胴部１の周状端縁部１２を圧潰し
、高周波誘導加熱によりヒートシールを行うっ 蓋体６と胴部１とのヒートシール後の保合部を拡大して
示す第６図において、本発明においては、第２図に示す
三重壁構造のカール部から成る周状端縁部１２を使用し
、これを蓋体６の内壁１６と外壁１７との間で挾んで圧
潰する条件下に押圧してヒートシールすることによシ、
蓋体内壁１６のヒートシール性樹脂層７ｄと端縁部最内
壁９のヒートシール性樹脂層７αとの間及び蓋体外壁１
７のヒートシール性樹脂層７ｄと端縁部最外壁１０のヒ
ートシール性樹脂層７αとの間に、高圧下に確実なヒー
トシールによる密封が行われる。のみならず、この高圧
ヒートシール条件下においては、積層体切断端縁８に近
接した端縁部中間壁１１のヒートシール性樹脂層７αと
端縁部最内壁９のヒートシール性樹脂層７ｂとの間にも
確実なヒートシールによる密封が行われる。このため、
積層体切断端縁８は、金属箔６及びヒートシール性樹脂
層で完全に包囲された状態で閉じ込められ、この切断端
縁８の露出紙基質５全通しての水や水蒸気等の透過、滲
透を完全に抑制し得ることになる０本発明においては、
上述した如く、カール部１２において、金属箔６が紙基
質５よりも外側に位置するようにし−１しかも金属箔６
上にヒートシール性樹脂層７αを設け、更に、三重壁第
１り造の端縁部に対して高圧下、即ち圧潰条件下でのヒ
ートシールを行うことにより、上述した如く、強固でし
かも確実なヒートシールによる密封と積層体切断端縁８
の封じ込めとが可能となるものである。On the other hand, the laminate 14 constituting the lid 3 is also composed of a metal foil 6 and a heat-sealable resin layer 7d provided on the inner surface side with respect to the metal foil 6, and on the outer surface side of the metal foil 6. A resin image retention layer 15 is provided. In the periphery of the lid body 6,
There is a circumferential groove 18 with a U-shaped cross section formed between the inner wall 16 and the outer wall 17, and the circumferential edge 12 of the cylindrical body 1 is inserted into this groove 18, and the lid body 6 and Engagement with the cylindrical body 1 is performed. In this state, the inner wall 16 and outer wall 17 of the lid 6 are pressed in the radial direction to crush the circumferential edge 12 of the cylindrical body 1, and the lid 6 is heat-sealed by high-frequency induction heating. In FIG. 6, which shows an enlarged view of the retaining part after heat sealing with the body part 1, in the present invention, the circumferential edge part 12 consisting of the curled part of the triple wall structure shown in FIG. 2 is used, By sandwiching this between the inner wall 16 and outer wall 17 of the lid body 6 and pressing it under crushing conditions and heat sealing,
Between the heat-sealable resin layer 7d of the lid inner wall 16 and the heat-sealable resin layer 7α of the innermost edge wall 9 and the lid outer wall 1
Sealing is performed by reliable heat sealing under high pressure between the heat-sealable resin layer 7d of 7 and the heat-sealable resin layer 7α of the outermost edge wall 10. In addition, under this high-pressure heat-sealing condition, the heat-sealable resin layer 7α on the edge intermediate wall 11 close to the cut edge 8 of the laminate and the heat-sealable resin layer 7b on the innermost edge wall 9 During this time, reliable heat sealing is also performed. For this reason,
The cut edge 8 of the laminate is completely surrounded and confined by the metal foil 6 and the heat-sealable resin layer, and water, water vapor, etc. are not permeable or seep through the entire exposed paper substrate 5 of the cut edge 8. In the present invention, it is possible to completely suppress
As described above, in the curled portion 12, the metal foil 6 is positioned outside the paper substrate 5-1, and the metal foil 6 is
By providing a heat-sealing resin layer 7α on top and further heat-sealing the edge portion of the first triple wall structure under high pressure, that is, under crushing conditions, it is strong and reliable as described above. Sealing by heat sealing and cutting edge of laminate 8
This makes it possible to contain the

積層体４のヒートシールに際して、紙基質５は熱に対す
るバリヤ一層として作用するが、本発明においては、端
縁部中間壁１１のヒートシール性樹脂層７αの（Ｇ下に
金属箔６が存在するため、この部分が高周波誘導により
或いは伝熱により加熱され、中間壁１１と最内壁９との
ヒートシールによる切断端縁８の封じ込めも確実に行わ
れるものである。When heat-sealing the laminate 4, the paper substrate 5 acts as a barrier layer against heat. Therefore, this portion is heated by high frequency induction or by heat transfer, and the cut edge 8 is reliably sealed by heat sealing between the intermediate wall 11 and the innermost wall 9.

更に、ヒートシール性樹脂層７αと紙基質５との間に金
属箔６が介在するため、密封の点で最も重要な蓋体ヒー
トシール層７ｄと端縁部ヒートシール層７αとの間に水
蒸気の泡が混入するのが防止され、確実な密封が可能と
なるものである。Furthermore, since the metal foil 6 is interposed between the heat-sealable resin layer 7α and the paper substrate 5, water vapor is not generated between the lid heat-seal layer 7d and the edge heat-seal layer 7α, which are the most important in terms of sealing. This prevents bubbles from entering the container and enables reliable sealing.

本発明において、ヒートシールすべき部分の加熱は、既
に述べた如く高周波誘導加熱により好都合に行われ、一
方こ゛の部分の押圧は周状端縁部８を間に挾んだ蓋体の
内壁１６及び外壁１７を、一対の狭いクリアランスのロ
ーラー間に通すか、或いは一対の雄及び却の割型で挾ん
で押圧するかによって行われる。In the present invention, the heating of the area to be heat-sealed is conveniently carried out by high-frequency induction heating as described above, while the pressing of this area is applied to the inner wall 16 of the lid with the circumferential edge 8 in between. This is done by passing the outer wall 17 between a pair of rollers with a narrow clearance, or by sandwiching and pressing it between a pair of male and female split molds.

本発明に卦いて、ヒートシール性樹１脅層としては、紙
を変質させることなく、ヒートシール可能な熱可塑性樹
脂、特に９０乃至３００℃の温度でヒートシール可能な
熱可塑性叫；１１￥が使用される。In addition to the present invention, the heat-sealable resin 1 threat layer is a thermoplastic resin that can be heat-sealed without changing the quality of the paper, especially a thermoplastic resin that can be heat-sealed at a temperature of 90 to 300°C; 11 yen. used.

その適当な例ｄ１これに制限されるものではないが、オ
レフィン樹脂層０；例えば低−１中−及び高−密度ポリ
エチレン、結晶性ポリプロピレン、結晶性プロピレン−
エチレン共ｆａ合体、プロピレン−ブテン−１共重合体
、エチレン−酢酸ビニル共重合体、４−メチルペンテン
−１重合体、イオン架橋オレフィン共重合体、酸変性オ
レフィン樹脂である。他に、ホモ乃至はコポリエステル
、ホモ乃至はコポリアミドも、ヒートシール温度が上記
範囲内にあるものであれば、本発明の目的に使用できる
。Suitable examples d1 include, but are not limited to, olefin resin layer 0; for example, low-1 medium- and high-density polyethylene, crystalline polypropylene, crystalline propylene-
They are ethylene cofa combination, propylene-butene-1 copolymer, ethylene-vinyl acetate copolymer, 4-methylpentene-1 polymer, ionically crosslinked olefin copolymer, and acid-modified olefin resin. In addition, homo- or copolyesters and homo- or copolyamides can also be used for the purpose of the present invention, as long as their heat-sealing temperature is within the above range.

紙基質としては、金属箔及びヒートシール性樹脂との組
合せで、筒状胴部に形態保持性を付与できるようなもの
であり、一般に坪量が１００乃至５００Ｌ！／７７Ｌ２
、特に２００乃至３５０　ｆ／ｍ”の範囲にあるカップ
原紙等の容器用原紙が使用される。The paper substrate is one that can provide shape retention to the cylindrical body in combination with metal foil and heat-sealable resin, and generally has a basis weight of 100 to 500L! /77L2
In particular, container base paper such as cup base paper in the range of 200 to 350 f/m'' is used.

筒状胴部用積層体の金属箔としては、厚みが７乃至６０
ミクロン、特に９乃至１５ミクロンの範囲にあるアルミ
箔が好適に使用されるが、所望によっては鋼箔、鉄箔、
ブリキ箔等を用いることもできる３、金属箔の表面はリ
ン酸及び／又はクロム酸等による化学処理が行われてい
てもよい。蓋体用の金属箔としては胴部用の金属箔に比
（〜でより厚いものＪＩＪえは厚みが３０乃至１５０ミ
クロンの金属箔を用いることができる。The thickness of the metal foil for the laminate for the cylindrical body is 7 to 60 mm.
Aluminum foil in the micron range, particularly in the 9 to 15 micron range, is preferably used, but steel foil, iron foil,
Tin foil or the like may also be used.3 The surface of the metal foil may be chemically treated with phosphoric acid and/or chromic acid. As the metal foil for the lid, a metal foil having a thickness of 30 to 150 microns can be used compared to the metal foil for the body.

金属箔とヒートシール性（剣脂との間に接着性が乏しい
場合には、インシアネート系接着剤、エポキシ系接着剤
或いは酸変性オレフィン樹脂を介して両者の貼り合せを
行ってもよい。If the adhesiveness between the metal foil and the heat-sealable resin is poor, the two may be bonded together using an incyanate adhesive, an epoxy adhesive, or an acid-modified olefin resin.

蓋体外表面を保Ｈφする保霞樹脂〕ｉフとしては、二軸
延伸ポリエステルフィルム、二ＩＩＬｌｌｌ机伸ナイロ
ンフィルム、二軸延伸ボ・リプロピレンフイルム等のプ
ラスチックフィルム類や、エポキシ−フェノール系塗料
、エポキシ−アミノ系塗料、エポキシ−アクリル系塗料
等工１ノエステル系塗料の樹脂塗膜が垢げられる。The protective resin that protects the outer surface of the lid body can be used for plastic films such as biaxially stretched polyester film, machine-stretched nylon film, biaxially stretched polypropylene film, epoxy-phenol paint, Resin coatings from 1-ester paints such as epoxy-amino paints and epoxy-acrylic paints are removed.

本発明において、筒状胴部及び蓋体の形成は、それ自体
公知の任意の手段で行い得る。例えば筒状胴部の形成は
、前述した積層体４を筒状に丸め対向する両端縁を重ね
合わせ接合乃至は突き合わせ接合することにより容易に
行われるし、また蓋体の形成は積層体１４を所定の形状
に打抜くと共に第２図に示す形状にプレス成形すること
により行われる。勿論、この蓋体には、それ自体公知の
イーシイ・オープン機構を設けることもできる。In the present invention, the cylindrical body and the lid may be formed by any means known per se. For example, the cylindrical body can be easily formed by rolling the above-described laminate 4 into a cylindrical shape and joining or butt-joining the opposing edges, and the lid can be formed by rolling the laminate 14 into a cylindrical shape. This is done by punching into a predetermined shape and press-forming into the shape shown in FIG. Of course, this lid body can also be provided with a known easy-opening mechanism.

本発明は、前述した両端開口の筒状胴部のみならず、一
方の端部に底板全嵌込んだ所謂カップ状のストレート乃
至はテーパー状の容器胴部の蓋による密封にも等しく適
用できるものである。The present invention is equally applicable not only to the above-mentioned cylindrical body with openings at both ends, but also to sealing with a lid of a so-called cup-shaped straight or tapered container body in which the bottom plate is completely fitted into one end. It is.

また、胴部１の周状端縁部１２を蓋体６の溝１８に嵌合
させたものを径方向に圧潰して、加圧下にヒートシール
を行う代りに、蓋体３の溝１８の外方端部１９（第２図
）を内向きに折曲げ、前記周状端縁部１２と溝１８との
係合物を軸方向に圧潰して加圧下にヒートシールを行う
こともできる。Also, instead of fitting the circumferential edge 12 of the body 1 into the groove 18 of the lid 6 and crushing it in the radial direction and heat-sealing it under pressure, the groove 18 of the lid 3 can be It is also possible to heat seal under pressure by bending the outer end 19 (FIG. 2) inward and crushing the engagement between the circumferential edge 12 and the groove 18 in the axial direction.

この態様を示す第４図において、胴部１及び蓋体６の！
ＲＩＲｈ’！成は第２及び５図に示したものと同一であ
り、蓋体上壁１６αのヒートシール性樹脂層７ｄと端縁
部最上壁９αのヒートシール性樹脂１脅７αとの間及び
蓋体下壁１７（Ｌのヒートシール性樹脂層７ｄと周状端
縁部最外壁１０ａとの間に高圧下に確実なヒートシール
による密封が行われ°ると共に、この高圧条件下に、胴
部積層体の切断端縁８に近接した端縁部中間壁１１αの
ヒートシール性樹脂層７αと端縁部最上壁９αのヒート
シール性樹脂層７ｈとの間にも確実なヒートシールによ
る密封が行われる。このため、第４図に示す態様におい
ても、積層体切断端縁８は、金属箔６及びヒートシール
性樹脂層で完全に包囲された状態で外界及び内容物から
完全に遮断され、優れた密封保持性、バリヤー性が得ら
れるものである。In FIG. 4 showing this aspect, the body part 1 and the lid body 6!
RIRh'! The structure is the same as that shown in FIGS. 2 and 5, and between the heat-sealable resin layer 7d on the top wall 16α of the lid body and the heat-sealable resin layer 7α on the top edge wall 9α, and under the lid body. A reliable heat seal is performed under high pressure between the heat-sealable resin layer 7d of the wall 17 (L) and the outermost wall 10a of the circumferential edge portion, and under this high pressure condition, the body laminate is Reliable heat sealing is also performed between the heat-sealable resin layer 7α of the edge intermediate wall 11α close to the cut edge 8 and the heat-sealable resin layer 7h of the edge uppermost wall 9α. Therefore, also in the embodiment shown in FIG. 4, the cut edge 8 of the laminate is completely surrounded by the metal foil 6 and the heat-sealable resin layer and is completely shielded from the outside world and the contents, resulting in excellent sealing. It provides retention and barrier properties.

本発明を次の例で説明する。The invention is illustrated by the following example.

実施例 最内層７αが厚さ５０μｍの中密度ポリエチレン、以後
６層が厚さ９μｍの軟質アルミ箔、７層層が厚さ３０　
／Ｚ　ｍの低密度ポリエチレン、５層が秤量２５０７−
７ｍ２の上質紙、最外層７ｂが厚さ５０μｍの低密度ポ
リエチレンより成る積層体４のブランクから筒体の内外
面にブランク端部を被覆するために低密度ポリエチレン
を差し込み、熱接着し、内径５２、高さ１５２罷のスト
レート筒体を形成後、約３の周状端縁部１２を両開口端
面に形成し、高さ１６６鵡の筒状胴部を製造した。Example The innermost layer 7α is medium density polyethylene with a thickness of 50 μm, the subsequent 6 layers are soft aluminum foil with a thickness of 9 μm, and the 7th layer is a thickness of 30 μm.
/Z m low density polyethylene, 5 layers weighing 2507-
The blank of the laminate 4 is made of 7 m2 of high-quality paper, and the outermost layer 7b is made of low-density polyethylene with a thickness of 50 μm. Low-density polyethylene is inserted into the inner and outer surfaces of the cylindrical body to cover the ends of the blank, and the inner diameter is 52 μm. After forming a straight cylindrical body with a height of 152 lines, approximately 3 circumferential edge portions 12 were formed on both open end faces to produce a cylindrical body with a height of 166 lines.

この周状端縁部１２に、内層７ｄが厚さ５０μｍの中密
度ポリエチレン、中間層６が厚さ１００μｍの軟質アル
ミ箔、外層１５が厚さ１２μｍの二軸延伸ポリエステル
よりなる積層体１４の蓋体６を第２図のように嵌合し、
嵌合部を高周波誘導加熱法により加熱し、直ちに狭いク
リアランスよりなる一対のロール間に通し、蓋体６の周
状溝１８及び胴部の周状端縁部１２を容器の径方向に圧
潰し、着体内壁１６と胴体の端縁部最内壁９との而及び
蓋体外壁１７と胴体の端縁部最外壁１０との面、及び胴
体の端縁部中間壁１１と胴体の端縁部最内壁９との面を
熱接着し、９０″Ｃに加熱されｒｃ１０チ果汁入りオレ
ンジジュースを２５０ｍ１充填後、前記と同様の方法に
より密封し、ビタミンＣの保存率を高めるために２０”
Ｏの水槽に５分間浸漬した。This circumferential edge portion 12 is covered with a lid of a laminate 14 in which the inner layer 7d is made of medium density polyethylene with a thickness of 50 μm, the intermediate layer 6 is made of soft aluminum foil with a thickness of 100 μm, and the outer layer 15 is made of biaxially stretched polyester with a thickness of 12 μm. Fit the body 6 as shown in Figure 2,
The fitting part is heated by high-frequency induction heating, and immediately passed between a pair of rolls having a narrow clearance to crush the circumferential groove 18 of the lid 6 and the circumferential edge 12 of the body in the radial direction of the container. , the surfaces between the inner wall 16 of the body and the innermost wall 9 of the edge of the body, the surfaces of the outer wall 17 of the lid body and the outermost wall 10 of the edge of the body, and the intermediate wall 11 of the edge of the body and the edge of the body. The surface with the innermost wall 9 was heat-bonded, heated to 90"C and filled with 250ml of orange juice containing rc10 juice, then sealed in the same manner as above, and 20" to increase the preservation rate of vitamin C.
It was immersed in an O water bath for 5 minutes.

比較のため、金属加熱ロールを用いて胴体の端縁部中間
壁１１と胴体の端縁部最内壁との面が熱接着していない
点を除いては前記と同様の方法により密封容器を製造し
た。For comparison, a sealed container was manufactured in the same manner as described above, except that the surfaces of the intermediate wall 11 at the edge of the body and the innermost wall at the edge of the body were not thermally bonded using a metal heating roll. did.

比較例による密封容器は胴部切断端縁８から水槽中で水
が浸透し、シミや紙基質の膨れによる外観不良や、胴体
の周状端縁部の空隙１６に水が留り、水カビの発生が考
えられる問題があった。しかし本発明による密封容器に
はいずれの問題もなかった。In the sealed container according to the comparative example, water penetrates into the water tank from the cut edge 8 of the body, resulting in poor appearance due to stains and swelling of the paper substrate, and water remaining in the gap 16 at the circumferential edge of the body, resulting in water mold. There was a problem that could have caused this. However, the sealed container according to the present invention did not have any problems.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の密封容器の斜視図であり、第２図は胴
部端縁部と蓋体とのヒートシール前の係合状態を拡大し
て示す断面図であり、第６図は、第２図の保合部を圧潰
下にヒートシールした状態を示す断面図であり、 第４図は本発明の他の態様の密封容器のヒートシール部
の拡大断面図である。 １は胴部、２はヒートシール部、６は蓋体、４及び１４
は積層体、５は紙基質、６は金属箔、７α〜７ｄはヒー
トシール性樹脂層、８は′！ｊｔＪａ体切断端縁、９は
最内壁１０は最外壁、１１は中間壁、１２は周状端縁部
、１６は空隙、１５は保護樹脂層、１６は蓋体内壁、１
７は蓋体外壁、１８は溝、１９は溝外方端部を夫々示す
。 特許出願人　岸　本　　　昭 ２３５ 第１図 第２図 ８ 第３図 第４図FIG. 1 is a perspective view of the sealed container of the present invention, FIG. 2 is an enlarged cross-sectional view showing the engaged state of the body end edge and the lid before heat sealing, and FIG. , is a cross-sectional view showing a state in which the retaining portion of FIG. 2 is heat-sealed while being crushed, and FIG. 4 is an enlarged cross-sectional view of the heat-sealed portion of a sealed container according to another embodiment of the present invention. 1 is a body part, 2 is a heat seal part, 6 is a lid body, 4 and 14
is a laminate, 5 is a paper substrate, 6 is a metal foil, 7α to 7d are heat-sealable resin layers, and 8 is '! jtJa body cut edge, 9 is the innermost wall 10 is the outermost wall, 11 is the intermediate wall, 12 is the circumferential edge, 16 is the gap, 15 is the protective resin layer, 16 is the lid inner wall, 1
Reference numeral 7 indicates an outer wall of the lid body, 18 indicates a groove, and 19 indicates an outer end of the groove. Patent applicant Kishimoto 1988 Figure 1 Figure 2 Figure 8 Figure 3 Figure 4

Claims (2)

【特許請求の範囲】[Claims] （１）　　紙基質及び金属箔を備え且つ両面にヒートシ
ール性樹脂Ｊｆ４わ有する積層体を金属箔が内側及び紙
基質が外側となるように筒状乃至はテーパー状に成形し
て成る胴部、前記胴部の少なくとも一方の開口端部にお
いて前記積層体を金属箔が外側となるようにカールさせ
且つ積層体の切断端縁をカール部内に包み込んだ三重壁
構造の周状の端縁部、及びヒートシール性樹脂層と金属
箔との積層体から成り且つ前記周状端縁部とヒートシー
ル性樹脂層を介して係合させる周辺部を備えた蓋体から
成り、 前記蓋体周辺部は周状端縁部が挿入される周状の溝を有
し、該溝の内壁と前記周状端縁部の最内壁との間、該博
の外壁と前記周状端縁の最外壁との間及び前記周状端縁
の最内壁と中間壁との間で夫々ヒートシールによる密封
が行われていることを特徴とする密封容器。(1) A body formed by molding a laminate comprising a paper substrate and metal foil and having heat-sealable resin Jf4 on both sides into a cylindrical or tapered shape with the metal foil on the inside and the paper substrate on the outside; a circumferential edge portion having a triple wall structure in which the laminate is curled with the metal foil facing outward at at least one open end of the body, and the cut edge of the laminate is wrapped within the curled portion; The lid body is made of a laminate of a heat-sealable resin layer and a metal foil, and has a peripheral portion that engages with the circumferential edge portion through the heat-sealable resin layer, and the lid peripheral portion is made of a laminate of a heat-sealable resin layer and metal foil. a circumferential groove into which the circumferential edge is inserted; between the inner wall of the groove and the innermost wall of the circumferential edge; between the outer wall of the groove and the outermost wall of the circumferential edge; A sealed container characterized in that the innermost wall and the intermediate wall of the circumferential edge are sealed by heat sealing. （２）紙基質及び金属箔を備え且つ両面にヒートシール
性樹脂層を有する′！ｉ！層体を金属箔が内側及び紙基
質が外側となるように筒状乃至はテーパー状に成形して
成る胴部、前記胴部の少なくとも一方の開口端部におい
て前記積層体を金属箔が外側となるようにカールさせ且
つ積層体の切断端縁をカール部内に包み込んだ三重壁構
造の周状の端縁部、及びヒートシール性樹脂層と金属箔
との積層体から成り且つ前記周状端縁部とヒートシール
性樹脂層を介して係合させる周辺部を備えた蓋体から成
り、 前記蓋体周辺部は周状端縁部が挿入される周状の溝を有
すると共にその外方端部は内向きに折曲げられ、該溝の
土壁と前記周状端縁部の最上壁との間、該溝の下壁と前
記周状端縁の最下壁との間及び前記周状端縁の最上壁と
中間壁との間で夫々ヒートシールによる密封が行われて
いることを特徴とする密封容器。(2) It is equipped with a paper substrate and metal foil, and has heat-sealable resin layers on both sides! i! A body formed by forming a layered body into a cylindrical or tapered shape such that the metal foil is on the inside and the paper substrate is on the outside; a circumferential edge portion having a triple-walled structure that is curled so that the cut edge of the laminate is wrapped in the curled portion, and a laminate consisting of a heat-sealable resin layer and a metal foil; The lid includes a peripheral portion that is engaged with the outer edge of the lid via a heat-sealable resin layer, and the peripheral portion of the lid has a circumferential groove into which the peripheral edge is inserted and an outer end thereof. is bent inward, between the soil wall of the groove and the uppermost wall of the circumferential edge, between the lower wall of the groove and the lowermost wall of the circumferential edge, and between the circumferential edge A sealed container characterized in that the uppermost wall and the middle wall of the rim are sealed by heat sealing.
JP57118430A 1982-06-30 1982-07-09 Sealed vessel Granted JPS5915041A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP57118430A JPS5915041A (en) 1982-07-09 1982-07-09 Sealed vessel
DE19833323644 DE3323644A1 (en) 1982-06-30 1983-06-30 TIGHT CONTAINER CONTAINED IN LAYERS
FR8310860A FR2531929B1 (en) 1982-06-30 1983-06-30 WELDED LAMINATED CONTAINER
GB08317741A GB2124997B (en) 1982-06-30 1983-06-30 Sealed laminated vessels
KR1019830003131A KR840005408A (en) 1982-07-09 1983-07-09 Sealed laminate container
US06/829,938 US4692132A (en) 1982-06-30 1986-02-18 Process for preparing a sealed laminated vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57118430A JPS5915041A (en) 1982-07-09 1982-07-09 Sealed vessel

Publications (2)

Publication Number Publication Date
JPS5915041A true JPS5915041A (en) 1984-01-26
JPS6229302B2 JPS6229302B2 (en) 1987-06-25

Family

ID=14736446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57118430A Granted JPS5915041A (en) 1982-06-30 1982-07-09 Sealed vessel

Country Status (2)

Country Link
JP (1) JPS5915041A (en)
KR (1) KR840005408A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151802U (en) * 1987-03-25 1988-10-05
JP2016060507A (en) * 2014-09-17 2016-04-25 凸版印刷株式会社 Paper cup

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151802U (en) * 1987-03-25 1988-10-05
JPH0331521Y2 (en) * 1987-03-25 1991-07-04
JP2016060507A (en) * 2014-09-17 2016-04-25 凸版印刷株式会社 Paper cup

Also Published As

Publication number Publication date
KR840005408A (en) 1984-11-12
JPS6229302B2 (en) 1987-06-25

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