JPS6046228A - 金属蓋付きプラスチツク容器の製造法 - Google Patents

金属蓋付きプラスチツク容器の製造法

Info

Publication number
JPS6046228A
JPS6046228A JP58154533A JP15453383A JPS6046228A JP S6046228 A JPS6046228 A JP S6046228A JP 58154533 A JP58154533 A JP 58154533A JP 15453383 A JP15453383 A JP 15453383A JP S6046228 A JPS6046228 A JP S6046228A
Authority
JP
Japan
Prior art keywords
plastic
cap
melt adhesive
double
seaming
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
JP58154533A
Other languages
English (en)
Other versions
JPH0320334B2 (ja
Inventor
Yoshihisa Hama
浜　与志久
Tatsu Akashi
明石　達
Tatsuo Shimura
志村　龍夫
Sukeyoshi Wakamiya
若宮　祐善
Naokazu Takeuchi
直和 竹内
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.)
Mitsubishi Heavy Industries Ltd
Toyobo Co Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Toyobo Co Ltd
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 Mitsubishi Heavy Industries Ltd, Toyobo Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP58154533A priority Critical patent/JPS6046228A/ja
Publication of JPS6046228A publication Critical patent/JPS6046228A/ja
Publication of JPH0320334B2 publication Critical patent/JPH0320334B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part 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
    • B29C66/01—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
    • B29C66/01—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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem 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
    • B29C66/50—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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow 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
    • B29C66/50—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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/16—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material
    • B65D15/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material with end walls made of metal
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/12—Rim rolling
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (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。

Description

【発明の詳細な説明】 この発明は、金属蓋付きプラスチック容器の製造法に関
する。
アルミニウム缶は、気密性、缶強度等の優れた性能を有
しているため、各種飲料容器として広く使用されている
が、原材料が高価であり、容器が不透明で内容物が外か
ら見えない等の不具合がある。この不具合を解消するた
めに、筒状のプラスチック容器の開口部に、フルミニラ
ムｉどの延展性の金属蓋を装着したものが提案されてい
る。プラスチック容器開口部に金属蓋を装着するには、
アルミニウム缶、ヌチール缶などで従来性なわれている
二重巻締め法が適［屈できるが、プラスチック材料は金
属材料に比べて弾性率か小さく、炭酸飲料ヲ充填したと
きのように内圧が常時かかるものでは、内圧の応力によ
って巻締め部の容器本体の厚み方向の歪は、金属缶体の
厚み方向の歪より太きい。そのため従来の二重巻締め法
では、巻締め部から缶体がすり抜けて金属蓋が外れる事
故が多発する。
これらの問題を解決するために、巻締め部に接着剤全使
用することが提案されているが、従来提案の方法では二
重巻締め装置が利用しに〈〈、捷だ十分な接着速度が得
られず実用的でない。
本発明者らは上記の問題を解決すべく鋭意研究した結果
、缶体のすり抜けがなくな一す、かつシール性の低下の
ない金属蓋付きプラスチック容器の迅速な製造法を発Ｈ
月したのである。
す々わちこの発明は、プラスチック缶体の開口部に延展
性金属蓋全巻締めするに際し１巻締め部にホットメルト
接着剤ケ介在させて巻締めしたのち、この巻締め部を高
周波誘導加熱してプラスチック缶体と金属蓋ケ接着Ｔる
ことを特徴とする金属蓋付きプラスチック容器の製造法
である。
この発明孕図面によって説明すると、第１図は従来の方
法による二重巻締めの一部断面図を示し、１は金属蓋−
２はプラスチック缶体にして、金属蓋１の外周縁部のカ
バーフック部１ａと缶体２の上縁部のボディフック部２
ａとが二重巻締めされ。
カバーフック部１ａの上方にアッパークリアランヌ３が
、またボディフック部２ａの下方にロワークリアランス
４がそれぞれ形成されている。
第２図はこの発明の巻締め法を説明する一部断面ケ示し
１巻締め前の金属蓋１の周縁のカバーフック部１ａ内面
にホットメルト接着剤層５會設ける。２ｂは缶体２の上
縁部を外側に折曲げて形成された巻締め前の状態のフラ
ンジである。
第３図は第２図の金属蓋］のカバーフック部］ａと缶体
２のフランジ２ｂと全二重巻締めした断面図であり、二
重巻締め後、外刃に近接して設けた高周波誘導加熱装置
６で巻締め部のみが、ホットメルト接着剤が軟化される
温度にまで急速に加熱される。
ホットメルト接着剤は、金属蓋のカバーフック部または
缶体のフランジのいずれに塗布してもよく、１だホット
メルト接着剤をあらかじめフィルム状としてこのフィル
ムを巻締め時に挾み込むことも可能である。ホットメル
ト接着剤としては。
缶体會構成するプラスチックの融点より低い温度で軟化
するものであれば、エチレン・酢酸ビニル共重合体系、
ポリエステル系、ポリアミド糸のいずれもが使用できる
。特に好ましいのは１缶体孕構成するプラスチックの構
成単位？主体とした共重合体であり、また少量のイオン
性基を含有する成分を共重合したものでもよい。巻締め
後に高周波誘導加熱することにより、接着剤は短時間で
軟化され、この加熱によって缶体は損傷會受けな込。
高周波誘導加熱装置は、１００ｋＨｚ以上の高周波発生
のものであり、高周波誘導コイルはリング状のものが好
適であるが、その細長円リング状、矩形状、板状のもの
でもよい。
この発１ｔ／ｆに使用されるプラスチック材料は、ポリ
エチレン、ポリプロピレン、耐衝撃性ポリスチレン、ポ
リカーボネートーポリエステルなどの熱可塑性樹脂であ
るが、特に好ましいのは、エチレンテレフタレート？主
成分とするポリエチレンテレツクレートであり、テレフ
タル酸又はそのエステル形成誘導体とエチレングリコー
ルとから得られる熱可塑性ポリエステルである。
プラスチック缶体會製造するには、原料の熱可Ｗ性樹脂
全押出成形機の所定形状のダイ７より溶融押出して成形
する。容器本体ζこ透明性全特にもたせようとする場合
は、溶融押出したパイプ會。
常温以下に冷却させてパイプ形状？規制するためのサイ
プで急冷して非晶質パイプとして成形する。
また容器本体の機械的強度全増大しようとする場合には
、押出し成形したパイプ會ガラス転移点以上、１５０°
Ｃ以下の延伸適温に加熱して一軸または二軸延伸する。
さらに容器本体が高温液体充填や高温殺菌などの高温に
耐えるように下る場合は。
上記延伸したパイプ？緊張下で熱固定操作を加える。
上記のようにこの発明における容器本体は一溶融押出し
後の加工条件を変更することによって、任意の性能が得
られる。また、未延伸もしくは低延伸のシート？真空成
形、圧空成形などによって深絞りして得られる有底容器
の巻締めに適用することもできる。
金属蓋の材料は、延展性ケ有するもので、アルミニウム
のほかに−プリキープラヌチックケ積層又は塗布した金
属などである。
以下にこの発明の詳細な説明する。
実施例 固有粘度０．７５　（フェノール／テトラクロロエタン
−６／４重量比混合溶媒を用いて３０°Ｃにて測定）の
ポリエチレンテレフタレートヲ２７５°Ｃに溶融Ｌ−パ
イプダイから押出して内径１５．８ｆｆｆｆ、外径１７
．７　ｍｍの管状に押出し、９３°Ｃ＋　２　ｋｔ）１
０！の加圧空気でブロー延伸して周方向に３倍延伸して
内径５２．４ｆｆ７ｆｆ、外径５３闘の延伸管ケ成形し
た。この延伸管全長さ１　／Ｉ　Ｏｍｒｎに切断し、次
いで両端開口部にハンドプレヌ機ケ用いて】００°Ｃで
フランジ？熱成形した。
あらかじめ−金属蓋のカバーフック部ｌこ、ポリエヌテ
ル共重合ホットメルト接着剤（商品名ＧＭ−４００、東
洋紡結社製）全塗布した厚み０２５πｍのアルミニウム
Ｍｋ缶体の両端開口部のフランジに載せ、セミトロシー
マ−（半田王様社製）を用いて順次巻締めした。続いて
巻締め部上端からコイル下端寸での距離２０門に配置し
た高周波誘導コイｔｖｌＣ−２５０’ｋＨｚ−２，５Ｋ
ＷＯ高周波電流’（１１−１，５秒通？１イし−プラス
チック缶体ケ溶融変形させることなく、ホットメルト接
着剤全軟化させたのち冷却した。
なお比較例として、上記実施例において、アルミニウム
蓋のカバーフック部にホットメルト接着剤葡塗布しない
ものを作成した。
上記実施例および比較例のポリエステル容器のそれぞれ
１０個に５．０にり／Ｃ１４の内圧全かけ−７０”Ｃ雰
囲気中に放置したところ一実施例では２４時間経過して
も金属蓋の外れたものは見られなかったが、比較例では
１０個のうち３個の金属蓋か外れた。
【図面の簡単な説明】
第１図は従来の巻締め部の構造の一部を示す断面図、第
２図はこの発明の方法？実施する中途の構造の一部會示
す断面図、第３図は高周波銹導加熱コイル？有する巻締
め部の構造？示す断面図である。 ］：金属蓋、］ａ：カバーフ゛ツク部、２ニブラスチッ
ク缶体、２ｂ：フランシ、ａ：巻ｉめｉ−５：ホットメ
７レト接着剤層−６：高周波誘導加熱コイル。 特許出願人　東洋紡績株式会社 〃　三菱重工業株式会社 代卯人　弁理士　坂　野　威　夫 〃　〃　吉　１）　了　司 第１図 第１頁の続き ＠発明者若宮　祐善 ＠発明者竹内　直利 名古屋市中村区岩塚町字高道１番地　三菱重工業株式会
社名古屋研究所内

Claims (1)

  1. 【特許請求の範囲】 〔〕〕プラヌチツク缶体の開口部に延展性金属蓋ケ巻締
    めするに際し、巻締め部にホットメルト接着剤？介在さ
    せて巻締めしたのち、この巻締め部に高周波誘導加熱し
    てプラスチック缶体と金属蓋ヶ接着することを特徴とす
    る金属蓋付きプラスチック容器の製造法。
JP58154533A 1983-08-23 1983-08-23 金属蓋付きプラスチツク容器の製造法 Granted JPS6046228A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58154533A JPS6046228A (ja) 1983-08-23 1983-08-23 金属蓋付きプラスチツク容器の製造法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58154533A JPS6046228A (ja) 1983-08-23 1983-08-23 金属蓋付きプラスチツク容器の製造法

Publications (2)

Publication Number Publication Date
JPS6046228A true JPS6046228A (ja) 1985-03-13
JPH0320334B2 JPH0320334B2 (ja) 1991-03-19

Family

ID=15586334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58154533A Granted JPS6046228A (ja) 1983-08-23 1983-08-23 金属蓋付きプラスチツク容器の製造法

Country Status (1)

Country Link
JP (1) JPS6046228A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6419749U (ja) * 1987-07-25 1989-01-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6419749U (ja) * 1987-07-25 1989-01-31

Also Published As

Publication number Publication date
JPH0320334B2 (ja) 1991-03-19

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