JPH038262B2 - - Google Patents

Info

Publication number
JPH038262B2
JPH038262B2 JP16664382A JP16664382A JPH038262B2 JP H038262 B2 JPH038262 B2 JP H038262B2 JP 16664382 A JP16664382 A JP 16664382A JP 16664382 A JP16664382 A JP 16664382A JP H038262 B2 JPH038262 B2 JP H038262B2
Authority
JP
Japan
Prior art keywords
heat
wall
layer
pressing
heating coil
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
JP16664382A
Other languages
Japanese (ja)
Other versions
JPS5955736A (en
Inventor
Kazuhisa Ishibashi
Fumio Ikushima
Kyonori Kogashiwa
Kazusane Hirota
Sadaki Matsui
Yasushi Nishimura
Yoshiji Ito
Hiroshi Ueno
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.)
Toyo Seikan Group Holdings Ltd
Original Assignee
Toyo Seikan Kaisha 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 Toyo Seikan Kaisha Ltd filed Critical Toyo Seikan Kaisha Ltd
Priority to JP57166643A priority Critical patent/JPS5955736A/en
Publication of JPS5955736A publication Critical patent/JPS5955736A/en
Publication of JPH038262B2 publication Critical patent/JPH038262B2/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
    • B29C66/72—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
    • 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
    • B29C65/3668—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 means for supplying heat to said heated elements which remain in the join, e.g. special induction coils
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one 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
    • B29C66/01—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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/50—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
    • B29C66/63—Internally supporting the article during joining
    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single 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
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • 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
    • B29C66/83—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Closing Of Containers (AREA)

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明はヒートシール方法に関し、さらに詳し
くは容器胴部の開口端部に端部材を高周波誘導加
熱によりヒートシールする方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a heat sealing method, and more particularly to a method of heat sealing an end member to an open end of a container body by high frequency induction heating.

（従来の技術） 従来、飲食品等の充填された、密封容器を製造
するために、容器胴部の開口端部に端部材（蓋部
材又は底部材）をヒートシールする場合、開口端
部を外方に突出するフランジ部に形成し、このフ
ランジ部に平坦な端部材をヒートシールする態様
のものが多かつた。そのため容器の収納容積が増
大し、かつフランジ部の鋭いコーナにより子供等
が手指に怪我をするおそれがあるという問題があ
つた。さらに端部材が平坦なため輸送時や取扱い
時等に積重ね等した場合、端部材が損傷し易いと
いう問題があつた。(Prior Art) Conventionally, when heat-sealing an end member (lid member or bottom member) to the open end of the container body in order to manufacture a sealed container filled with food and drink, etc., the open end is In many cases, a flat end member is heat-sealed to an outwardly projecting flange. As a result, the storage volume of the container increases, and the sharp corners of the flange portion pose a risk of injury to children's hands and fingers. Furthermore, since the end members are flat, there is a problem that the end members are easily damaged when stacked during transportation or handling.

これに対し最近、断面ほぼＵ字形もしくはＶ字
形のリム部と、凹んだパネル部を有する端部材の
リム部を、容器胴部の直筒状の開口端部にヒート
シールしてなる容器が提案されている。この種の
容器は上記の問題点を解消し、かつ端部材を開口
端部に冠装するさいの位置決めが容易であるとい
う利点を有する。しかし従来のこの種の容器のヒ
ートシール、前記冠装後リム部の内壁内に加熱体
（例えば電気抵抗体によつて内部加熱された）を
挿入し、リム部の外側より押圧具により押圧して
ヒートシールする方法によつて行なわれていた。 In response to this, recently, a container has been proposed in which a rim portion having a substantially U-shaped or V-shaped cross section and an end member having a recessed panel portion is heat-sealed to the straight cylindrical open end of the container body. ing. This type of container eliminates the above-mentioned problems and has the advantage that it is easy to position the end member when mounting it on the open end. However, in the conventional heat sealing method for this type of container, a heating element (for example, internally heated by an electric resistor) is inserted into the inner wall of the rim part after the crown is mounted, and the rim part is pressed from the outside with a pressing tool. This was done using a method of heat sealing.

この種の容器の密封性を確保するためには、端
部材のリム部の内壁と開口端部間のヒートシール
部が重要なのであるが、加熱体を用いる場合に
は、ヒートシール後加熱体の電流を切つても加熱
体の熱容量のためヒートシール部が冷却固化する
のに時間がかかり、屡々ヒートシール部が溶融し
ている間に、内壁に緊挿された加熱体を抜き出し
て内壁を移動させ、そのためヒートシール部を剥
がして密封不良容器を生じ易かつた。一方ヒート
シール部が十分に冷却固化してから加熱体を抜き
出す場合には、生産性が低下するという問題があ
つた。 In order to ensure the sealing performance of this type of container, the heat seal between the inner wall of the rim of the end member and the open end is important. Even when the current is turned off, it takes time for the heat-sealed part to cool and solidify due to the heat capacity of the heating element, and the heating element that is tightly inserted into the inner wall is often pulled out and moved around the inner wall while the heat-sealed part is melting. Therefore, the heat-sealed portion was likely to peel off, resulting in a poorly sealed container. On the other hand, when the heating element is removed after the heat-sealed portion has been sufficiently cooled and solidified, there is a problem in that productivity decreases.

（発明が解決しようとする課題） 本発明は、生産性に優れ、かつ密封不良容器が
発生し難い、容器胴部に端部材をヒートシールす
る方法を提供することを目的とする。(Problems to be Solved by the Invention) An object of the present invention is to provide a method for heat-sealing an end member to a container body, which is highly productive and less likely to result in a poorly sealed container.

（課題を解決するための手段） 上記目的を達成するため、本発明は容器胴部の
少なくとも内層がヒートシール性樹脂よりなる開
口端部に、パネル部と、該パネル部周縁より立上
る断面ほぼＵ字形又はＶ字形の、内面層がヒート
シール性樹脂よりなり、かつ金属層を含むリム部
を有す端部材の該リム部を冠装し、該リム部の内
壁に、外周面が該内壁に対応する形状を有する水
冷却された高周波誘導加熱コイルを当接又は対向
させ、内周面が、該開口端部に接触した状態にお
ける該外壁に対応する形状を有し、誘導循環電流
を遮断するための電気絶縁層が設けられた主とし
て金属よりなる複数の押圧部材を備えた押圧具
と、該加熱コイルとの協同により、該リム部の外
壁と内壁を該開口端部に押圧し、該加熱コイルに
通電して、少なくとも該内壁の該金属層を高周波
誘導加熱して、該内層および該内面層のヒートシ
ール性樹脂の温度をヒートシール可能温度まで上
昇させ、ヒートシール部を形成した後、該加熱コ
イルを消勢し、該ヒートシール部が冷却固化した
後上記押圧を解除することを特徴とする容器胴部
に端部材をヒートシールする方法を提供するもの
である。(Means for Solving the Problems) In order to achieve the above object, the present invention includes a panel portion at the open end of the container body, at least the inner layer of which is made of a heat-sealable resin, and a cross section rising from the periphery of the panel portion that is approximately A U-shaped or V-shaped end member having a rim part whose inner layer is made of heat-sealable resin and includes a metal layer is crowned with the rim part, and the outer circumferential surface is attached to the inner wall of the rim part. A water-cooled high-frequency induction heating coil having a shape corresponding to the above is brought into contact with or facing the inner circumferential surface thereof, and the inner circumferential surface has a shape corresponding to the outer wall in contact with the open end to interrupt the induced circulating current. A pressing tool equipped with a plurality of pressing members mainly made of metal and provided with an electrically insulating layer for heating the heating coil presses the outer wall and the inner wall of the rim portion against the opening end. After energizing the heating coil to perform high-frequency induction heating on at least the metal layer on the inner wall to raise the temperature of the inner layer and the heat-sealable resin of the inner layer to a heat-sealable temperature to form a heat-sealed portion. , provides a method for heat-sealing an end member to a container body, characterized in that the heating coil is deenergized and the pressing force is released after the heat-sealed portion is cooled and solidified.

（作用） 加熱体として高周波誘導加熱コイルを用いて、
端部材のリム部の金属層を誘導加熱するので、ヒ
ートシールのための加熱時間を極く短くする、例
えば0.0〜2.0秒（第17頁第８〜９行参照）にする
ことができる。また高周波誘導加熱コイルは水冷
却されているので、ヒートシールによつて溶融し
た樹脂を、加熱コイルを消勢後急速に、例えば
0.2〜2.0秒（第18頁第９行参照）で固化温度以下
に冷却することができる。従つて生産性が大幅に
向上する。(Function) Using a high frequency induction heating coil as a heating element,
Since the metal layer of the rim portion of the end member is heated by induction, the heating time for heat sealing can be extremely short, for example, from 0.0 to 2.0 seconds (see lines 8 to 9 on page 17). In addition, since the high-frequency induction heating coil is water-cooled, the melted resin by heat sealing can be rapidly heated, for example, after the heating coil is de-energized.
It can be cooled to below the solidification temperature in 0.2 to 2.0 seconds (see page 18, line 9). Therefore, productivity is greatly improved.

端部材のリム部の外壁を押圧する押圧部材は主
として金属よりなるが、誘導循環電流を遮断する
ための電気絶縁層が設けられているので、ヒート
シールのさい押圧部材に誘導循環電流が殆ど流れ
ない。従つてヒートシールのさいの誘導電流のロ
スが少なく、誘導加熱効率が向上する。この点か
らもヒートシールのための加熱時間を極く短くす
ることができる。 The pressing member that presses the outer wall of the rim portion of the end member is mainly made of metal, but since it is provided with an electrically insulating layer to block induced circulating current, most of the induced circulating current does not flow through the pressing member during heat sealing. do not have. Therefore, loss of induced current during heat sealing is reduced, and induction heating efficiency is improved. Also from this point of view, the heating time for heat sealing can be extremely shortened.

上記のように押圧部材は主として金属よりなつ
ている。金属は一般に熱伝導率が高いので、ヒー
トシール後の放熱を早めて、溶融樹脂の冷却、固
化を促進する。この点からもヒートシール後の冷
却時間を極く短くすることができる。 As mentioned above, the pressing member is mainly made of metal. Since metals generally have high thermal conductivity, they accelerate heat dissipation after heat sealing and promote cooling and solidification of the molten resin. Also from this point of view, the cooling time after heat sealing can be extremely shortened.

主として金属よりなる押圧部材はプラスチツク
等に比べて耐久性が高いので、長時間の使用によ
つても摩耗や破損が起こり難い。このため寿命が
永く、交換のための作業を中断する頻度が少なく
なるので、この点からも生産性が向上する。 Since the pressing member mainly made of metal has higher durability than plastic or the like, it is difficult to wear or break even after long-term use. Therefore, the service life is longer, and the frequency of interruption of work for replacement is reduced, so productivity is improved from this point of view as well.

押圧具は、内周面が開口端部に接触した状態に
おけるリム部外壁に対応する形状を有しており、
かつ複数の押圧部材よりなるので、押圧のさい外
壁に密着する故、密封性の高いヒートシール部を
形成することができる。 The pressing tool has a shape corresponding to the outer wall of the rim portion in a state where the inner peripheral surface is in contact with the opening end,
In addition, since it is composed of a plurality of pressing members, it comes into close contact with the outer wall during pressing, so that a heat-sealed portion with high sealing performance can be formed.

またヒートシール部が冷却固化した後押圧部材
による押圧を解除するのであるから、高周波誘導
加熱コイルを抜き出すさいに、ヒートシール部を
剥すおそれがなく、従つて密封不良容器を生じ難
い。 Further, since the pressure by the pressing member is released after the heat-sealed portion is cooled and solidified, there is no risk of peeling off the heat-sealed portion when the high-frequency induction heating coil is extracted, and therefore, a poorly sealed container is unlikely to occur.

（実施例） 以下図面を参照しながら本発明について説明す
る。(Example) The present invention will be described below with reference to the drawings.

第１図において、１は容器胴部であり、２は端
部材（この場合は低部材）である。容器胴部１
は、第２図に示すように、本例においては外層１
ａ（ヒートシール性樹脂、例えば厚さ約50μｍの
ポリエチレンフイルム）、外側中間層１ｂ（例えば
厚さ約300μｍの紙材）、中央中間層１ｃ（例えば
厚さ約30μｍのポリエチレンフイルム）、内側中
間層１ｄ（例えば厚さ約15μｍのアルミニウム
箔）、内層１ｅ（ヒートシール性樹脂、例えば厚さ
約50μｍのポリエチレンフイルム）よりなつてお
り（層１ｃ，１ｄ，１ｅは酸変性ポリエチレン等
の図示されない接着剤層によつて接着されてい
る）、ブランクを円筒状に丸めた後、重ね合せ部
のヒートシール性樹脂（この場合はポリエチレ
ン）よりなる外層１ａと内層１ｅをヒートシール
することによつて形成される。 In FIG. 1, 1 is a container body, and 2 is an end member (in this case, a lower member). Container body 1
As shown in FIG. 2, in this example, the outer layer 1
a (heat-sealable resin, e.g. polyethylene film about 50 μm thick), outer intermediate layer 1b (e.g. paper material about 300 μm thick), central intermediate layer 1c (e.g. polyethylene film about 30 μm thick), inner intermediate layer 1d (for example, aluminum foil with a thickness of about 15 μm), and an inner layer 1e (heat-sealable resin, for example, a polyethylene film with a thickness of about 50 μm) (layers 1c, 1d, and 1e are made of an adhesive (not shown) such as acid-modified polyethylene After rolling the blank into a cylindrical shape, the outer layer 1a and the inner layer 1e made of a heat-sealable resin (in this case polyethylene) are formed by heat-sealing the overlapped parts. Ru.

端部材２は、パネル部３と、パネル部周縁より
立上るリム部４とを有し、リム部４は断面ほぼＶ
字状（ほぼＵ字状であつてもよい）であつて、垂
直に立上る内壁４ａ、および内壁４ａの上端部か
ら、頂部４ｂを介して外側斜下方に延びる外壁４
ｃを有している。内壁４ａの外径は、容器胴部１
の開口端部１ｆ内に緩挿可能に、開口端部１ｆの
内径と実質的に等しく定められる。内壁４ａの高
さは通常約３〜10mmである。頂部４ｂの半径方向
幅は、開口端部１ｆの厚さと実質的に等しく定め
られる。 The end member 2 has a panel portion 3 and a rim portion 4 rising from the periphery of the panel portion, and the rim portion 4 has a cross section of approximately V.
An inner wall 4a that is shaped like a letter (it may be approximately U-shaped) and stands up vertically, and an outer wall 4 that extends obliquely downward to the outside from the upper end of the inner wall 4a via the apex 4b.
It has c. The outer diameter of the inner wall 4a is the same as that of the container body 1.
It is defined to be substantially equal to the inner diameter of the open end 1f so that it can be loosely inserted into the open end 1f. The height of the inner wall 4a is usually about 3 to 10 mm. The radial width of the top portion 4b is determined to be substantially equal to the thickness of the open end portion 1f.

端部材２は、本例においては外層２ａ（例えば
厚さ約5μｍのエポキシ・ウレア系焼付塗膜、も
しくは厚さ約12μｍの２軸延伸ポリエチレンテレ
フタレートフイルム）、中間層2b（金属箔、例え
ば厚さ約100μｍのアルミニウム箔）、および内面
層２ｃ（ヒートシール性樹脂、例えば厚さ約50μ
ｍのポリエチレンフイルム）よりなつており、各
層（外層２ａが焼付塗膜又は印刷膜よりなる場合
は、中間層２ｂと内面層２ｃ間のみ）は、酸変性
ポリエチレン等の図示されない接着剤層によつて
接着されている。そして端部材２は、通常絞り加
工によつて形成される。従つて中間層２ｂの金属
箔の厚さは絞り加工後も自己保形性が保たれる程
度の厚さ（通常30〜150μｍ）に定められる。 In this example, the end member 2 includes an outer layer 2a (for example, an epoxy-urea baked coating film with a thickness of about 5 μm, or a biaxially stretched polyethylene terephthalate film with a thickness of about 12 μm), an intermediate layer 2b (a metal foil, for example, a aluminum foil of about 100 μm), and the inner layer 2c (heat-sealable resin, e.g., about 50 μm thick)
Each layer (if the outer layer 2a is made of a baked coating or printed film, only between the intermediate layer 2b and the inner layer 2c) is made of an adhesive layer (not shown) such as acid-modified polyethylene. It is glued together. The end member 2 is usually formed by drawing. Therefore, the thickness of the metal foil of the intermediate layer 2b is set to a thickness (usually 30 to 150 μm) that maintains self-shape retention even after drawing.

６は高周波誘導加熱装置であつて、高周波誘導
加熱コイル７（本明細書においては、加熱コイル
と略称する）、加熱コイル７に内接する高透磁率
材料、例えばフエライトよりなる断面コ字型の磁
芯８、周縁部９ａが加熱コイル７の下端部７a1に
接近し、かつ誘導加熱装置６の下面に着設された
電気良導体（例えば銅又はアルミニウム）よりな
り、水冷パイプ９ｂによつて冷却された磁束マス
ク用シート９（第３図参照）、および電気絶縁性
材料（例えばベークライト又はエポキシ樹脂等
の）よりなる支持体１０を備えている。 Reference numeral 6 denotes a high-frequency induction heating device, which includes a high-frequency induction heating coil 7 (abbreviated as a heating coil in this specification), and a magnet having a U-shaped cross section and made of a high magnetic permeability material, such as ferrite, inscribed in the heating coil 7. The core 8 and the peripheral edge 9a are close to the lower end 7a1 of the heating coil 7, and are made of a good electrical conductor (for example, copper or aluminum) attached to the lower surface of the induction heating device 6, and are cooled by a water cooling pipe 9b. The magnetic flux mask sheet 9 (see FIG. 3) is provided with a magnetic flux mask sheet 9 (see FIG. 3), and a support 10 made of an electrically insulating material (for example, Bakelite or epoxy resin).

加熱コイル７は、短円筒形で金属シート（通常
は銅板よりなる）よりなるコイル本体７ａ、およ
びコイル本体７ａの上部内側に固着された水冷却
パイプ７ｂを備えている。コイル本体７ａは、容
器胴部１の開口端部１ｆに着装された端部材２の
リム部４の内壁４ａに対応する形状を有してお
り、好ましくはコイル本体７ａが内壁４ａに緊挿
可能に（内壁４ａと開口端部１ｆの間に健全なヒ
ートシール部が形成されるように）、その外径は
内壁４ａの内径に実質的に等しく定められる。 The heating coil 7 includes a short cylindrical coil body 7a made of a metal sheet (usually made of a copper plate), and a water cooling pipe 7b fixed inside the upper part of the coil body 7a. The coil body 7a has a shape corresponding to the inner wall 4a of the rim portion 4 of the end member 2 attached to the open end 1f of the container body 1, and preferably the coil body 7a can be tightly inserted into the inner wall 4a. Its outer diameter is defined to be substantially equal to the inner diameter of the inner wall 4a (so that a sound heat seal is formed between the inner wall 4a and the open end 1f).

ヒートシールのさい、開口端部１ｆに密接して
いる内壁４ａにくらべて、端部材２のパネル部３
の周縁部３ａは熱容量が小さい（通常1/5程度）。
そのためコイル本体７ａの下端部７a1がパネル部
３に接近しすぎたり、あるいは下端部７a1が厚肉
の場合、周縁部３ａに生ずる磁束の密度が大にな
つて、周縁部３ａ、特に下端部７a1の真下の部分
の内面層２ｃ（第２図）を形成するヒートシール
性樹脂が溶融、流動して薄くなつて、内容物を充
填密封後の保存中に中間層２ｂの金属箔が腐食さ
れ易くなるという問題を生ずる。特に液体を含む
内容物を充填した後ヒートシールする場合、ヒー
トシールすべき界面部分に該液体が付着残留した
状態でヒートシールすると、溶融樹脂中の水蒸気
の透過度が大きいため、ヒートシール部から透過
してきた水蒸気が周縁部３ａの溶融した内面層２
ｃと中間層２ｂの間に気泡を生成し、冷却後この
気泡に水分が残留して、中間層２ｂの金属箔の腐
食を促進する傾向がある。 During heat sealing, the panel portion 3 of the end member 2 is
The peripheral portion 3a has a small heat capacity (usually about 1/5).
Therefore, if the lower end 7a 1 of the coil body 7a is too close to the panel 3, or if the lower end 7a 1 is thick, the density of magnetic flux generated at the peripheral edge 3a will increase, causing the peripheral edge 3a, especially the lower end The heat-sealable resin forming the inner layer 2c (Fig. 2) directly below the portion 7a1 melts, flows, and becomes thin, and the metal foil of the intermediate layer 2b melts and flows during storage after filling and sealing. This causes the problem that it becomes easily corroded. In particular, when heat-sealing after filling contents containing liquid, if heat-sealing is performed with the liquid remaining attached to the interface to be heat-sealed, the permeability of water vapor in the molten resin is high, so the heat-sealed portion The water vapor that has passed through the molten inner layer 2 of the peripheral portion 3a
After cooling, moisture tends to remain in the bubbles and promote corrosion of the metal foil of the intermediate layer 2b.

このような欠陥を防止するためには、コイル本
体７ａの下端部７a1とパネル部３の上面間の距離
ｇが１mm以上になるように、ヒートシールのさい
高周波誘導加熱装置６を装着することが望まし
い。さらに距離ｇは１mm以上であつて、かつ上記
の欠陥が起らない範囲においてできるたけ小さい
ことが、可及的高いヒートシール部を確保する上
で望ましい。 In order to prevent such defects, the high frequency induction heating device 6 should be installed during heat sealing so that the distance g between the lower end 7a 1 of the coil body 7a and the top surface of the panel section 3 is 1 mm or more. is desirable. Furthermore, it is desirable that the distance g be 1 mm or more and as small as possible within the range where the above-mentioned defects do not occur, in order to ensure the highest possible heat-sealed portion.

また下端部７a1は薄肉であること、好ましくは
下端部７a1の下面７a′1の厚さが２mm以下で、下
面７a′1より２mm高い部分における厚さが３mm以
下である程度に薄肉であることが望ましい。 In addition, the lower end 7a 1 is thin, preferably the thickness of the lower surface 7a' 1 of the lower end 7a 1 is 2 mm or less, and the thickness of the part 2 mm higher than the lower surface 7a' 1 is 3 mm or less. This is desirable.

さらに内壁４ａの外層２ａが薄い場合は、ヒー
トシール時に誘導加熱された中間層２ｂ（金属箔）
の熱が水冷された加熱コイル７に逃げ易く、その
ためヒートシール部の温度上昇が遅くなり、加熱
時間が長びくため、前記の周縁部３ａの異常加熱
が起り易い。従つて外層２ａの厚さが0.1mmより
薄い場合は、コイル本体７ａの外面に、シリコン
ゴムシートのような弾性体（特に重ね合せ部があ
る場合）、もしくは弗素樹脂フイルム（重ね合せ
部がない場合等に）等よりなる熱絶縁層（図示さ
れない）を設けて、コイル本体７ａと中間層２ｂ
間の間隔を0.1mm以上2.0mm以下にすることが望ま
しい。 Furthermore, if the outer layer 2a of the inner wall 4a is thin, the intermediate layer 2b (metal foil) is induction heated during heat sealing.
The heat tends to escape to the water-cooled heating coil 7, which slows down the temperature rise of the heat-sealed portion and prolongs the heating time, which tends to cause abnormal heating of the peripheral edge 3a. Therefore, if the thickness of the outer layer 2a is thinner than 0.1 mm, the outer surface of the coil body 7a should be made of an elastic material such as a silicone rubber sheet (especially if there is an overlapping part) or a fluororesin film (especially if there is no overlapping part). In some cases, a heat insulating layer (not shown) consisting of a coil main body 7a and an intermediate layer 2b is provided.
It is desirable that the distance between the two is 0.1 mm or more and 2.0 mm or less.

磁芯８は、磁束をリム部４および開口端部１ｆ
の金属層（中間層２ｂおよび内中間層１ｄ）に集
中させ加熱効率を高め、前述の周縁部３ａにおけ
る漏洩磁束を減少させるという作用を有する。シ
ート９は、磁束がパネル部３の周縁部３ａの内側
部の金属層（中間層２ｂ）内に生じて、そのため
該部の金属層が加熱され、内面層２ｃのヒートシ
ール性樹脂が溶融するのを防止する作用を有す
る。しかし作業条件によつては、必ずしも磁芯８
および／またはシート９を設けなくてもよい。 The magnetic core 8 transfers magnetic flux to the rim portion 4 and the open end 1f.
It has the effect of increasing the heating efficiency by concentrating on the metal layer (intermediate layer 2b and inner intermediate layer 1d) and reducing the leakage magnetic flux at the peripheral edge 3a. In the sheet 9, magnetic flux is generated in the metal layer (intermediate layer 2b) on the inner side of the peripheral edge 3a of the panel portion 3, so that the metal layer in this area is heated, and the heat-sealable resin of the inner layer 2c is melted. It has the effect of preventing However, depending on the working conditions, the magnetic core 8
And/or the sheet 9 may not be provided.

１３は、高周波誘導加熱装置６への、端部材２
挿入、および取外しを容易にするためのエア導孔
である。高周波誘導加熱装置６の以上に述べた各
構成部材は、接着剤により互に接合されている。
支持体１０は、フレーム１４螺着されている。 13 is the end member 2 to the high frequency induction heating device 6
Air guide hole for easy insertion and removal. The above-mentioned components of the high-frequency induction heating device 6 are bonded to each other with an adhesive.
The support body 10 is screwed onto the frame 14.

第４図、第５図、第６図において、１５は押圧
具であつて、複数（図では４個）の開閉可能の押
圧体１６ａ，１６ｂ，１７ａ，１７ｂを備えてい
る。各押圧体の内側には、押圧部材１８が固設さ
れており、押圧部材１８の内周面１８ａは、閉じ
た状態（第４図、第５図の状態）において、容器
胴部の開口端部１ｆの外面に接触した状態におけ
る端部材の外壁４ｃに対応する形状を有するよう
構成されている。 In FIGS. 4, 5, and 6, reference numeral 15 denotes a pressing tool, which includes a plurality of (four in the figures) openable and closable pressing bodies 16a, 16b, 17a, and 17b. A pressing member 18 is fixed inside each pressing member, and the inner circumferential surface 18a of the pressing member 18 is located at the open end of the container body in the closed state (the state shown in FIGS. 4 and 5). It is configured to have a shape corresponding to the outer wall 4c of the end member in a state in which it is in contact with the outer surface of the portion 1f.

第７図、第８図に示すように、各押圧部材１８
の対向する円周方向端部１８ｂ，１８ｃには、係
合して互に円周方向に摺動可能な凸部１９および
凹部２０が設けられている。すなわち各押圧部材
１８は、入子式に互に連接するように構成されて
いる。そして第７図に示すように、押圧部材１８
で押圧することにより、リム部４と開口端部１ｆ
が接触した状態においても、端部１８ｂと端部１
８ｃの間に僅かな隙間２１ａ，２１ｂ（好ましく
は約0.5mm以下）が生じて、リム部４と開口端部
１ｆ間に所定の押圧力が加えられるようになつて
いる。そして隙間２１ａと２１ｂは連続していな
い、すなわち入子式になつているため、端部１８
ｂと１８ｃ間には軸線方向に連続した隙間が形成
されない。そのため隙間にもとづくヒートシール
不良部の発生を防止することができる。 As shown in FIGS. 7 and 8, each pressing member 18
A convex portion 19 and a concave portion 20 are provided at opposing circumferential end portions 18b and 18c, respectively, so that the convex portion 19 and the concave portion 20 can be engaged with each other and slidable relative to each other in the circumferential direction. That is, each pressing member 18 is configured to be connected to each other in a telescoping manner. Then, as shown in FIG. 7, the pressing member 18
By pressing with
Even when the ends 18b and 1 are in contact with each other, the ends 18b and 1
A slight gap 21a, 21b (preferably about 0.5 mm or less) is created between the rim portion 4 and the opening end portion 8c, so that a predetermined pressing force is applied between the rim portion 4 and the open end portion 1f. Since the gaps 21a and 21b are not continuous, that is, they are nested, the end 18
A continuous gap in the axial direction is not formed between b and 18c. Therefore, it is possible to prevent the occurrence of heat seal defects due to gaps.

押圧部材１８は、耐久性及び加熱効率の観点か
ら、電気電導度の大きな金属（例えばアルミニウ
ム合金又は真鍮等の）よりなることが望ましい。
この場合押圧部材１８内に円周方向に流れる循環
誘導電流が形成されて、加熱効率を著るしく低下
するので、各押圧部材１８を半径方向に延びる電
気絶縁膜２３（例えばエポキシ樹脂よりなる）で
区分して、上記循環誘導電流が流れないようにす
ることが望ましい。 From the viewpoints of durability and heating efficiency, the pressing member 18 is desirably made of a metal with high electrical conductivity (for example, aluminum alloy or brass).
In this case, a circulating induced current flowing in the circumferential direction is formed within the pressing members 18, which significantly reduces the heating efficiency. It is desirable that the circulating induced current is prevented from flowing.

押圧体１６ａ，１６ｂ，１７ａ，１７ｂは循環
誘導電流が形成されないように、比較的機械的強
度の大きい電気絶縁材料（例えばベークライト）
より形成されている。なお外壁４ｃと開口端部１
ｆをもヒートシールする場合であつて、外壁４ｃ
の外層２ａの厚さが0.1mmより薄いときは、前述
と同じ理由により、押圧部材１８の内周面１８ａ
に熱絶縁層（図示されない）を設けて、内周面１
８ａと中間層２ｂ（金属箔）間の距離（押圧下に
おける）を0.1mm以上、2.0mm以下にすることが望
ましい。容器胴部１に重ね合せ部がある場合は、
シリコンゴムシート等の弾性体よりなる熱絶縁層
を設けることが望ましい。 The pressing bodies 16a, 16b, 17a, and 17b are made of an electrically insulating material with relatively high mechanical strength (for example, Bakelite) to prevent the formation of circulating induced currents.
It is more formed. Note that the outer wall 4c and the opening end 1
In the case where the outer wall 4c is also heat-sealed,
When the thickness of the outer layer 2a is thinner than 0.1 mm, the inner circumferential surface 18a of the pressing member 18 is
A thermal insulation layer (not shown) is provided on the inner peripheral surface 1.
It is desirable that the distance (under pressure) between 8a and the intermediate layer 2b (metal foil) be 0.1 mm or more and 2.0 mm or less. If the container body 1 has an overlapping part,
It is desirable to provide a heat insulating layer made of an elastic material such as a silicone rubber sheet.

対向する押圧体１６ａおよび１６ｂは、夫々ピ
ストンロツド２２ａおよび２２ｂを介して、図示
されないエアシリンダーによつて、図の左右方向
に移動される。押圧体１６ｂには、押圧体１６ａ
の方に向つて外拡りに延びる１対の案内面２４ａ
を有するガイドプレート２４が固着されている。
押圧体１ａのピストンロツド２２ａ側の端部の両
側辺に設けられたフランジ部２５ａおよび２５ｂ
に、夫々押圧体１７ａおよび１７ｂが軸支されて
いる。押圧体１７ａ，１７ｂの押圧部材側の端部
にはローラ２６が軸架されており、押圧体１７ａ
および１７ｂは、押圧スプリング２７によつてロ
ーラ２６が常時案内面２４と接触するように偏倚
されている。そのため第６図に示すように、押圧
体１６ａおよび１６ｂが夫々矢印Ｘ方向およびＹ
方向に後退すると、押圧体１７ａおよび１７ｂ
は、押圧部材１８が夫々矢印Ｐ方向およびＱ方向
に移動するように遥動し押圧具１５は開いた状態
となる。この開いた状態から、押圧体１６ａ，１
６ｂを前進させると、各ローラ２６は案内面２４
ａに沿つて互に接近する方向に移動して、第４図
に示すような閉じた状態となるように押圧具１５
は構成されている。 The opposing pressing bodies 16a and 16b are moved in the left-right direction in the figure by an air cylinder (not shown) via piston rods 22a and 22b, respectively. The pressing body 16b has a pressing body 16a.
A pair of guide surfaces 24a extending outwardly toward
A guide plate 24 is fixed thereto.
Flange portions 25a and 25b provided on both sides of the end of the pressing body 1a on the piston rod 22a side
Pressing bodies 17a and 17b are pivotally supported, respectively. A roller 26 is mounted on a shaft at the end of the pressing members 17a, 17b on the pressing member side.
and 17b are biased by a pressure spring 27 so that the roller 26 is always in contact with the guide surface 24. Therefore, as shown in FIG. 6, the pressing bodies 16a and 16b move in the direction of arrow
When retreating in the direction, the pressing bodies 17a and 17b
In this case, the pressing member 18 swings in the directions of arrows P and Q, respectively, and the pressing tool 15 is in an open state. From this open state, the pressing bodies 16a, 1
6b is advanced, each roller 26 moves toward the guide surface 24.
The pressing tools 15 are moved toward each other along the direction a so that the pressing tools 15 are in the closed state as shown in FIG.
is configured.

以上の装置によりヒートシールは次のようにし
て行なわれる。 Heat sealing is performed using the above apparatus as follows.

容器胴部１をリフタープレート２８の上に載置
し、容器胴部１の開口端部１ｆに、端部材のリム
部４を冠装する。次いでリフタープレート２８を
移動させて、高周波誘導加熱装置６の直下に達し
た時停止し、前述の距離ｇが所定値に達するま
で、リフタープレート２８を上昇させる。この時
点で押圧具１５は開いた状態にある。次にエアシ
リンダー（図示されない）を作動させて、押圧体
１６ａ，１６ｂを閉じる方向に移動させて、押圧
体１６ａ，１６ｂ，１７ａ，１７ｂと加熱コイル
７の協同によつて、端部材の外壁４ｃおよび内壁
４ａを開口端部１ｆに対し押圧する。上記押圧と
ほぼ同時に加熱コイル７に通電する。 The container body 1 is placed on the lifter plate 28, and the rim portion 4 of the end member is mounted on the open end 1f of the container body 1. Next, the lifter plate 28 is moved and stopped when it reaches directly below the high frequency induction heating device 6, and the lifter plate 28 is raised until the above-mentioned distance g reaches a predetermined value. At this point, the pressing tool 15 is in an open state. Next, an air cylinder (not shown) is operated to move the pressing bodies 16a, 16b in the closing direction, and by the cooperation of the pressing bodies 16a, 16b, 17a, 17b and the heating coil 7, the outer wall 4c of the end member is heated. and presses the inner wall 4a against the open end 1f. Almost simultaneously with the above pressing, the heating coil 7 is energized.

本例の場合は容器胴部１は紙材よりなる外側中
間層１ｂを含んでいる。従つて例えばジユース類
をホツトパツク法により充填、密封し（内壁と開
口端部の間でのみ）その後水冷した場合、外壁４
ｃと開口端部１ｆがヒートシールされていない
と、上記紙材に水が浸透して、容器胴部１が軟
化、変形して、不良容器となる。従つてこのよう
な場合は、外壁４ｃと開口端部１ｆ間も完全にヒ
ートシールする必要がある。そのためには通電さ
れる高周波電流の周波数0を、開口端部１ｆに接
触した外壁４ｃの中間層２ｂの金属箔に十分な誘
導電流が流れる程度に低くする必要がある。 In this example, the container body 1 includes an outer intermediate layer 1b made of paper material. Therefore, if, for example, juices are filled and sealed by the hot pack method (only between the inner wall and the open end) and then cooled with water, the outer wall 4
If c and the opening end 1f are not heat-sealed, water will penetrate into the paper material and the container body 1 will become soft and deformed, resulting in a defective container. Therefore, in such a case, it is necessary to completely heat seal the space between the outer wall 4c and the opening end 1f. For this purpose, it is necessary to set the frequency 0 of the high-frequency current to be applied so low that a sufficient induced current flows through the metal foil of the intermediate layer 2b of the outer wall 4c in contact with the opening end 1f.

一般に高周波電流の浸透深さｔは、次の式１か
ら求められる。 Generally, the penetration depth t of high-frequency current is obtained from the following equation 1.

ここには周波数、σおよびμは、夫々被加熱
金属（本例ではアルミニウム）の電気伝導率
（MKS単位）、および透磁率（MKS単位）であ
る。従つて本例の場合、内壁４ａ、容器胴部１お
よび外壁４ｃに含まれるアルミニウム箔の厚さの
和をｔとすると、前記周波数0を、ほぼ１／πμσt2
よ り低く定める必要がある。 Here, the frequency, σ and μ are the electrical conductivity (in MKS units) and magnetic permeability (in MKS units) of the metal to be heated (aluminum in this example), respectively. Therefore, in the case of this example, if the sum of the thicknesses of the aluminum foils included in the inner wall 4a, container body 1, and outer wall 4c is t, then the frequency 0 is approximately 1/πμσt 2
It is necessary to set it lower.

加熱コイル７に、上記周波数0の高周波電流を
通電することによつて、内壁４ａ、開口端部１ｆ
外壁４ｃの金属箔が誘導加熱され、そのため加熱
された金属箔部分に接するヒートシール性樹脂で
あるポリエチレンがヒートシール可能温度以上
（融点110℃のポリエチレンの場合例えば150℃）
に、押圧下に昇温して、内壁４ａと開口端部１ｆ
の間、および外壁４ｃと開口端部１ｆの間でヒー
トシールが行なわれる。 By passing a high frequency current of frequency 0 through the heating coil 7, the inner wall 4a and the open end 1f are heated.
The metal foil of the outer wall 4c is heated by induction, so that the polyethylene, which is a heat-sealable resin in contact with the heated metal foil portion, reaches a heat-sealable temperature or higher (for example, 150°C in the case of polyethylene with a melting point of 110°C).
Then, the temperature is raised under pressure to form the inner wall 4a and the open end 1f.
Heat sealing is performed between the outer wall 4c and the open end 1f.

通電時間、すなわちシートシール時間は、0.1
〜2.0秒であることが望ましい。0.1秒より短かい
場合は金属層が溶融、もしくは樹脂層が焼損し易
く、一方２秒より長い場合は、ヒートシール部
（熱絶縁層を含む）の熱容量（温度×体積）が大
きくなりすぎて、後述の冷却時間が長くなるため
である。また冷却された加熱コイルによる吸熱量
が大となつて、加熱効率が低下するからである。 The energization time, that is, the sheet sealing time, is 0.1
~2.0 seconds is desirable. If it is shorter than 0.1 seconds, the metal layer is likely to melt or the resin layer will be burned out, while if it is longer than 2 seconds, the heat capacity (temperature x volume) of the heat-sealed part (including the thermal insulation layer) will become too large. This is because the cooling time described below becomes longer. Furthermore, the amount of heat absorbed by the cooled heating coil increases, resulting in a decrease in heating efficiency.

各押圧部材１８は、入子式に連接しているの
で、押圧は開口端部１ｆに沿つてほぼ均一に行な
われ、押圧されない部分にもとづくヒートシール
欠陥部が発生するおそれはない。 Since each pressing member 18 is connected in a telescoping manner, pressing is performed almost uniformly along the opening end 1f, and there is no possibility that a heat seal defect will occur due to a portion that is not pressed.

次いで加熱コイルを消勢し、ヒートシール部の
当該シートシール性樹脂が固化温度（結晶性樹脂
の場合は融点より低い温度、無定形樹脂の場合は
軟化点より低い温度）より低い温度に冷却した後
（ヒートシール部にピンホール等の欠陥発生を防
止のため）、押圧具１５を開いて、押圧を解除し、
リフター２８を下げて誘導加熱装置６から端部材
２を取外す。水冷却パイプ７ｂによつてコイル本
体７ａは冷却されているので上記冷却時間は短か
く、通常0.2〜2.0秒である。 Then, the heating coil was deenergized, and the sheet-sealable resin in the heat-sealed portion was cooled to a temperature lower than the solidification temperature (a temperature lower than the melting point in the case of a crystalline resin, a temperature lower than the softening point in the case of an amorphous resin). After that (to prevent defects such as pinholes in the heat-sealed part), open the pressing tool 15 and release the pressing,
Lower the lifter 28 and remove the end member 2 from the induction heating device 6. Since the coil body 7a is cooled by the water cooling pipe 7b, the above cooling time is short, usually 0.2 to 2.0 seconds.

このように冷却時間を短かくするためには、加
熱コイル７の通電時間とインターバルを例えば
１：５にして、コイル本体７ａの比較的長い冷却
時間をとることが望ましい。生産性を低下するこ
となく、必要な通電インターバルをとるために
は、複数個（例えば８個）の高周波誘導加熱装置
６が円周方向に配設されたターレツト方式のヒー
トシール装置を用いればよい。 In order to shorten the cooling time in this way, it is desirable to set the energization time and interval of the heating coil 7 to 1:5, for example, so that the cooling time of the coil body 7a is relatively long. In order to obtain the necessary energization interval without reducing productivity, a turret-type heat sealing device in which a plurality of high-frequency induction heating devices 6 (for example, eight) are arranged in the circumferential direction may be used. .

上記のようにして底部材が容器胴部にヒートシ
ールされた容器が形成されるが、上記容器に内容
物を充填した後、同様にして蓋部材をヒートシー
ルすることによつて密封容器が製造される。 A container is formed in which the bottom member is heat-sealed to the container body as described above, but after the container is filled with contents, a sealed container is manufactured by heat-sealing the lid member in the same manner. be done.

本発明は以上の例によつて制限されるものでな
ない。例えば容器胴部は紙材を含むことなく、プ
ラスチツクのみ（プラスチツクの積層体を含む；
この場合は、押出機によつて継目なし容器胴部を
形成してもよい）よりなるもの、もしくはプラス
チツクと金属箔の積層体よりなるものであつても
よい。この場合は水の浸透による軟化のおそれが
ないので、内壁のみのヒートシールでもよい。し
かし蓋部材のヒートシールの場合は、内容物の水
分が開口端部の内面に付着してヒートシール部に
ピンホール等が発生するおそれがあるので、外壁
をも同時にヒートシールすることが望ましい。さ
らに容器胴部は隅丸角筒上等の適宜の形状をとり
うるものである。 The present invention is not limited to the above examples. For example, the container body does not contain any paper material, but only plastic (including a laminate of plastics;
In this case, the container may be made of a seamless container body (which may be formed using an extruder) or a laminate of plastic and metal foil. In this case, there is no risk of softening due to water penetration, so heat sealing of only the inner wall may be sufficient. However, in the case of heat-sealing the lid member, it is desirable to heat-seal the outer wall at the same time, since there is a risk that moisture from the contents may adhere to the inner surface of the opening end and cause pinholes or the like to occur in the heat-sealed portion. Further, the container body can have an appropriate shape such as a rectangular cylinder with rounded corners.

また端部材の外面は金属層が露出したものであ
つてもよい。ただしこの場合は短絡による放電を
防止するためと、前述のパネル部周縁部３ａの過
熱防止のため、コイル本体７ａの外周面を電気お
よび熱絶縁性被膜で被覆する必要がある。また外
壁４ｃをもヒートシールする場合にも、同様の理
由で押圧部材１８の内周面を電気および熱絶縁性
被膜で被覆する必要がある。 Further, the metal layer may be exposed on the outer surface of the end member. However, in this case, it is necessary to cover the outer circumferential surface of the coil body 7a with an electrically and thermally insulating film in order to prevent discharge due to a short circuit and to prevent the above-mentioned panel portion peripheral portion 3a from overheating. Further, when the outer wall 4c is also heat-sealed, it is necessary to cover the inner peripheral surface of the pressing member 18 with an electrically and thermally insulating film for the same reason.

なお押圧体１６の数は３個以上が望ましい。２
個の場合には、押圧部材１８の周方向端部近傍
で、半径方向側に向う押圧力を十分に作用させる
ことができないので、該部近傍でヒートシール欠
陥部を生じ易くなるからである。 Note that the number of pressing bodies 16 is preferably three or more. 2
In this case, a sufficient radial pressing force cannot be applied near the circumferential end of the pressing member 18, and heat seal defects are likely to occur near the circumferential end.

さらに第９図に示す加熱コイル７′のように、
コイル本体７′ａは薄い金属シートを積層巻きし
てなるものであつてもよい。この場合もコイル本
体の下端部７′a1は、前述の範囲内で薄肉である
ことが望ましい。 Furthermore, like the heating coil 7' shown in FIG.
The coil body 7'a may be formed by laminating and winding thin metal sheets. In this case as well, it is desirable that the lower end portion 7'a1 of the coil body is thin within the above-mentioned range.

（発明の効果） 本発明の容器胴部に端部材をヒートシールする
方法は、生産性が高く、かつ密封不良容器を生じ
難いという効果を奏する。(Effects of the Invention) The method of heat-sealing an end member to a container body according to the present invention is highly productive and has the advantage of being less likely to produce a poorly sealed container.

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

第１図は本発明の方法を実施するための装置の
例の要部縦断面図、第２図は第１図のＡ部の拡大
縦断面図、第３図は第１図のＢ部の押圧下におけ
る状態を示す拡大縦断面図、第４図は第１図に用
いられる押圧具の閉じた状態を示す平面図、第５
図は第４図の−線に沿う縦断面図、第６図は
第４図の押圧具の開いた状態を示す平面図、第７
図は第４図の−線に沿う縦断面図、第８図は
第６図の−線に沿う縦断面図、第９図は本発
明の実施に用いられる他の例の加熱コイルを示す
要部縦断面図である。 １……容器本体、１ｆ……開口端部、１ｅ……
内層（ヒートシール性樹脂よりなる層）、２……
端部材、２ｂ……中間層（金属箔よりなる層）、
２ｃ……内面層（ヒートシール性樹脂よりなる
層）、３……パネル部、４……リム部、４ａ……
内壁、４ｃ……外壁、７，７′……加熱コイル、
１５……押圧具、１８……押圧部材。 FIG. 1 is a longitudinal cross-sectional view of a main part of an example of an apparatus for implementing the method of the present invention, FIG. 2 is an enlarged vertical cross-sectional view of section A in FIG. 1, and FIG. 3 is an enlarged longitudinal cross-sectional view of section B in FIG. FIG. 4 is an enlarged vertical sectional view showing the state under pressure; FIG. 4 is a plan view showing the pressing tool used in FIG. 1 in the closed state;
The figure is a longitudinal cross-sectional view taken along the - line in Fig. 4, Fig. 6 is a plan view showing the pressing tool in Fig. 4 in an open state, and Fig. 7 is a longitudinal sectional view taken along the - line in Fig.
The figure is a longitudinal sectional view taken along the - line in Fig. 4, Fig. 8 is a longitudinal sectional view taken along the - line in Fig. 6, and Fig. 9 is a schematic view showing another example of a heating coil used for carrying out the present invention. FIG. 1... Container body, 1f... Opening end, 1e...
Inner layer (layer made of heat-sealable resin), 2...
End member, 2b...middle layer (layer made of metal foil),
2c... Inner layer (layer made of heat-sealable resin), 3... Panel part, 4... Rim part, 4a...
Inner wall, 4c...Outer wall, 7, 7'...Heating coil,
15...pressing tool, 18...pressing member.

Claims (1)

【特許請求の範囲】[Claims] １ 容器胴部の少なくとも内層がヒートシール性
樹脂よりなる開口端部に、パネル部と、該パネル
部周縁より立上る断面ほぼＵ字形又はＶ字形の、
内面層がヒートシール性樹脂よりなり、かつ金属
層を含むリム部を有する端部材の該リム部を冠装
し、該リム部の内壁に、外周面が該内壁に対応す
る形状を有する水冷却された高周波誘導加熱コイ
ルを当接又は対向させ、内周面が、該開口端部に
接触した状態における該外壁に対応する形状を有
し、誘導循環電流を遮断するための電気絶縁層が
設けられた主として金属よりなる複数の押圧部材
を備えた押圧具と、該加熱コイルとの協同によ
り、該リム部の外壁と内壁を該開口端部に押圧
し、該加熱コイルに通電して、少なくとも該内壁
の該金属層を高周波誘導加熱して、該内層および
該内面層のヒートシール性樹脂の温度をヒートシ
ール可能温度まで上昇させ、ヒートシール部を形
成した後、該加熱コイルを消勢し、該ヒートシー
ル部が冷却固化した後上記押圧を解除することを
特徴とする容器胴部に端部材をヒートシールする
方法。1 At the open end of the container body, at least the inner layer of which is made of heat-sealable resin, there is a panel portion and a substantially U-shaped or V-shaped cross section rising from the periphery of the panel portion.
An end member having a rim portion whose inner layer is made of a heat-sealable resin and includes a metal layer is crowned with the rim portion of the end member, and the outer peripheral surface has a shape corresponding to the inner wall of the rim portion. The high-frequency induction heating coils are placed in contact with or facing each other, the inner circumferential surface has a shape corresponding to the outer wall in contact with the open end, and an electrical insulating layer is provided for blocking the induced circulating current. A pressing tool having a plurality of pressing members mainly made of metal cooperates with the heating coil to press the outer wall and inner wall of the rim portion against the open end, and energizes the heating coil to at least The metal layer on the inner wall is heated by high-frequency induction to raise the temperature of the inner layer and the heat-sealable resin of the inner layer to a heat-sealable temperature to form a heat-sealable portion, and then the heating coil is deenergized. . A method for heat sealing an end member to a container body, the method comprising releasing the pressure after the heat seal portion is cooled and solidified.
JP57166643A 1982-09-27 1982-09-27 Heat sealing method Granted JPS5955736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57166643A JPS5955736A (en) 1982-09-27 1982-09-27 Heat sealing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57166643A JPS5955736A (en) 1982-09-27 1982-09-27 Heat sealing method

Publications (2)

Publication Number Publication Date
JPS5955736A JPS5955736A (en) 1984-03-30
JPH038262B2 true JPH038262B2 (en) 1991-02-05

Family

ID=15835072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57166643A Granted JPS5955736A (en) 1982-09-27 1982-09-27 Heat sealing method

Country Status (1)

Country Link
JP (1) JPS5955736A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61244537A (en) * 1985-04-24 1986-10-30 北海製罐株式会社 Bonder
JPS62238767A (en) * 1986-04-10 1987-10-19 Ngk Insulators Ltd Recorder
JPH07232391A (en) * 1994-02-25 1995-09-05 Nitto Shoji Kk Combustible container and production thereof

Also Published As

Publication number Publication date
JPS5955736A (en) 1984-03-30

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