JPH0320334B2 - - Google Patents

Info

Publication number
JPH0320334B2
JPH0320334B2 JP58154533A JP15453383A JPH0320334B2 JP H0320334 B2 JPH0320334 B2 JP H0320334B2 JP 58154533 A JP58154533 A JP 58154533A JP 15453383 A JP15453383 A JP 15453383A JP H0320334 B2 JPH0320334 B2 JP H0320334B2
Authority
JP
Japan
Prior art keywords
plastic
double
melt adhesive
cap
hot melt
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.)
Expired - Lifetime
Application number
JP58154533A
Other languages
English (en)
Other versions
JPS6046228A (ja
Inventor
Yoshihisa Hama
Tatsu Akashi
Tatsuo Shimura
Sukeyoshi Wakamya
Naokazu Takeuchi
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)

Description

【発明の詳細な説明】 この発明は、金属蓋付きプラスチツク容器の製
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
チツク容器の開口部に、アルミニウムなどの延展
性の金属蓋を装着したものが提案されている。プ
ラスチツク容器開口部に金属蓋を装着するには、
アルミニウム缶、スチール缶などで従来行なわれ
ている二重巻締め法が適用できるが、プラスチツ
ク材料は金属材料に比べて弾性率が小さく、炭酸
飲料を充填したときのように内圧が常時かかるも
のでは、内圧の応力によつ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
大きい。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
着剤を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くく、ま
た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り、かつシー
ル性の低下のない金属蓋付きプラスチツク容器の
迅速な製造法を発明したのである。
すなわちこの発明は、プラスチツク缶体の開口
部に延展性金属蓋を巻締めするに際し、巻締め部
にホツトメルト接着剤を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
ツク缶体と金属蓋を接着することを特徴とする金
属蓋付きプラスチツク容器の製造法である。
この発明を図面によつて説明すると、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はプラスチツク缶体にして、
金属蓋１の外周縁部のカバーフツク部１ａと缶体
２の上縁部のボデイフツク部２ａとが二重巻締め
され、カバーフツク部１ａの上方にアツパークリ
アランス３が、またボデイフツク部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
面を示し、巻締め前の金属蓋１の周縁のカバーフ
ツク部１ａ内面にホツトメルト接着剤層５を設け
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１のカバーフツク部１
ａと缶体２のフランジ２ｂとを二重巻締めした断
面図であり、二重巻締め後、外方に近接して設け
た高周波誘導加熱装置６で巻締め部のみが、ホツ
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。
ホツトメルト接着剤は、金属蓋のカバーフツク
部または缶体のフランジのいずれに塗布してもよ
く、またホツトメルト接着剤をあらかじめフイル
ム状としてこのフイルムを巻締め時に挾み込むこ
とも可能である。ホツトメルト接着剤としては、
缶体を構成するプラスチツ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、ポリアミド系のい
ずれもが使用できる。特に好ましいのは、缶体を
構成するプラスチツクの構成単位を主体とした共
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、この加熱によつて缶体は損傷を受けな
い。
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、その他長円リング状、矩
形状、板状のものでもよい。
この発明に使用されるプラスチツク材料は、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、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
ンテレフタレートを主成分とするポリエチレンテ
レフタレートであり、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。
プラスチツク缶体を製造するには、原料の熱可
塑性樹脂を押出成形機の所定形状のダイスより溶
融押出して成形する。容器本体に透明性を特にも
たせようとする場合は、溶融押出したパイプを、
常温以下に冷却させてパイプ形状を規制するため
のサイザ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を増大しようとす
る場合には、押出し成形したパイプをガラス転移
点以上、150℃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する場合
は、上記延伸したパイプを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、溶
融押出し後の加工条件を変更することによつて、
任意の性能が得られる。また、未延伸もしくは低
延伸のシートを真空成形、圧空成形などによつて
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、延展性を有するもので、アル
ミニウムのほかに、ブリキ、プラスチツクを積層
又は塗布した金属などである。
以下にこの発明の実施例を説明する。
実施例 固有粘度0.75（フエノール／テトラクロロエタ
ン＝６／４重量比混合溶媒を用いて30℃にて測
定）のポリエチレンテレフタレートを275℃に溶
融し、パイプダイから押出して内径15.8mm、外径
17.7mmの管状に押出し、93℃、２Kg／cm2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
52.4mm、外径53mmの延伸管を成形した。この延伸
を長さ140mmに切断し、次いで両端開口部にハン
ドプレス機を用いて100℃でフランジを熱成形し
た。あらかじめ、金属蓋のカバーフツク部に、ポ
リエステル共重合ホツトメルト接着剤（商品名
GM−400、東洋紡績社製）を塗布した厚み0.25
mmのアルミニウム蓋を缶体の両端開口部のフラン
ジに載せ、セミトロシーマー（半田工機社製）を
用いて順次巻締めした。続いて巻締め部上端から
コイル下端までの距離20mmに配置した高周波誘導
コイルに、250KHz、2.5KWの高周波電流を1.5秒
通電し、プラスチツク缶体を溶融変形させること
なく、ホツトメルト接着剤を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ツク部にホツトメルト接着
剤を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5.0Kｇ／cm2の内圧をかけ、70℃
雰囲気中に放置したところ、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つた
が、比較例では10個のうち３個の金属蓋が外れ
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を実施する中途の
構造の一部を示す断面図、第３図は高周波誘導加
熱コイルを有する巻締め部の構造を示す断面図で
ある。 １：金属蓋、１ａ：カバーフツク部、２：プラ
スチツク缶体、２ｂ：フランジ、３：巻締め部、
５：ホツトメルト接着剤層、６：高周波誘導加熱
コイル。

Claims (1)

    【特許請求の範囲】
  1. １ プラスチツク缶体の開口部に延展性金属蓋を
    巻締めするに際し、巻締め部にホツトメルト接着
    剤を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ツク缶体と金属蓋を
    接着することを特徴とする金属蓋付きプラスチツ
    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 JPS6046228A (ja) 1985-03-13
JPH0320334B2 true 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)

Families Citing this family (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
JPS6046228A (ja) 1985-03-13

Similar Documents

Publication Publication Date Title
US2885105A (en) Preformed shrinkable closures for containers
EP0084827B1 (en) Method for the manufacture of a deep-drawn object
US5062568A (en) Thermoplastic cup and method and apparatus for making
US4014724A (en) Bottle-shaped containers of the one-way type and a method for the manufacture of the same
JPS6230021A (ja) 熱時充填用の耐熱破壊性ポリエステル容器の製造方法
JP2983222B2 (ja) 容器及び缶のためのプラスチック製閉止部並びにこの閉止部を作る方法
WO2003093121A1 (en) Opening curled part of metal container and method of forming the opening curled part
CN1297413A (zh) 可再封闭的易开封闭件及罐体
JPH0436855B2 (ja)
JPS58502192A (ja) 包装容器の製造方法およびこの方法を実施するための装置
JPH0320334B2 (ja)
JP3131746B2 (ja) 耐熱性容器用成形蓋の成形方法
JPH0343144B2 (ja)
JPH0579587B2 (ja)
JPH0356979B2 (ja)
EP0132468A1 (en) Container body
EP0019316A1 (en) A method for the manufacture of containers by deep drawing of hollow parts from blanks of amorphous polyester material
JPH0431938B2 (ja)
JPH05213352A (ja) プラスチック製蓋
US5167900A (en) Method of producing an easily openable multilayer plastic container
EP0700333B1 (en) A method of producing bottle or tube-like, capped packaging containers from a polymer material
JP3608575B2 (ja) フィルム被覆金属缶の製造方法
JPH0420768Y2 (ja)
JPH03187820A (ja) 熱収縮ラベルの製造方法
JP2536745Y2 (ja) 易開封性容器蓋