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)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Closing Of Containers (AREA)
  • Making Paper Articles (AREA)

Description

【発明の詳现な説明】 産業䞊の利甚分野 本発明はヒヌトシヌル方法に関し、さらに詳し
くは容噚胎郚の開口端郚に端郚材を高呚波誘導加
熱によりヒヌトシヌ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.

埓来の技術 埓来、飲食品等の充填された、密封容噚を補造
するために、容噚胎郚の開口端郚に端郚材蓋郚
材又は底郚材をヒヌトシヌルする堎合、開口端
郚を倖方に突出するフランゞ郚に圢成し、このフ
ランゞ郚に平坊な端郚材をヒヌトシヌルする態様
のものが倚か぀た。そのため容噚の収玍容積が増
倧し、か぀フランゞ郚の鋭いコヌナにより子䟛等
が手指に怪我をするおそれがあるずいう問題があ
぀た。さらに端郚材が平坊なため茞送時や取扱い
時等に積重ね等した堎合、端郚材が損傷し易いず
いう問題があ぀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.

これに察し最近、断面ほが字圢もしくは字
圢のリム郚ず、凹んだパネル郚を有する端郚材の
リム郚を、容噚胎郚の盎筒状の開口端郚にヒヌト
シヌルしおなる容噚が提案されおいる。この皮の
容噚は䞊蚘の問題点を解消し、か぀端郚材を開口
端郚に冠装するさいの䜍眮決めが容易であるずい
う利点を有する。しかし埓来のこの皮の容噚のヒ
ヌトシヌル、前蚘冠装埌リム郚の内壁内に加熱䜓
䟋えば電気抵抗䜓によ぀お内郚加熱されたを
挿入し、リム郚の倖偎より抌圧具により抌圧しお
ヒヌトシヌルする方法によ぀お行なわれおいた。 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.

この皮の容噚の密封性を確保するためには、端
郚材のリム郚の内壁ず開口端郚間のヒヌトシヌル
郚が重芁なのであるが、加熱䜓を甚いる堎合に
は、ヒヌトシヌル埌加熱䜓の電流を切぀おも加熱
䜓の熱容量のためヒヌトシヌル郚が冷华固化する
のに時間がかかり、屡々ヒヌトシヌル郚が溶融し
おいる間に、内壁に緊挿された加熱䜓を抜き出し
お内壁を移動させ、そのためヒヌトシヌル郚を剥
がしお密封䞍良容噚を生じ易か぀た。䞀方ヒヌト
シヌル郚が十分に冷华固化しおから加熱䜓を抜き
出す堎合には、生産性が䜎䞋するずいう問題があ
぀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.

発明が解決しようずする課題 本発明は、生産性に優れ、か぀密封䞍良容噚が
発生し難い、容噚胎郚に端郚材をヒヌトシヌルす
る方法を提䟛するこずを目的ずする。(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 䞊蚘目的を達成するため、本発明は容噚胎郚の
少なくずも内局がヒヌトシヌル性暹脂よりなる開
口端郚に、パネル郚ず、該パネル郚呚瞁より立䞊
る断面ほが字圢又は字圢の、内面局がヒヌト
シヌル性暹脂よりなり、か぀金属局を含むリム郚
を有す端郚材の該リム郚を冠装し、該リム郚の内
壁に、倖呚面が該内壁に察応する圢状を有する氎
冷华された高呚波誘導加熱コむルを圓接又は察向
させ、内呚面が、該開口端郚に接觊した状態にお
ける該倖壁に察応する圢状を有し、誘導埪環電流
を遮断するための電気絶瞁局が蚭けられた䞻ずし
お金属よりなる耇数の抌圧郚材を備えた抌圧具
ず、該加熱コむルずの協同により、該リム郚の倖
壁ず内壁を該開口端郚に抌圧し、該加熱コむルに
通電しお、少なくずも該内壁の該金属局を高呚波
誘導加熱しお、該内局および該内面局のヒヌトシ
ヌル性暹脂の枩床をヒヌトシヌル可胜枩床たで䞊
昇させ、ヒヌトシヌル郚を圢成した埌、該加熱コ
むルを消勢し、該ヒヌトシヌル郚が冷华固化した
埌䞊蚘抌圧を解陀するこずを特城ずする容噚胎郚
に端郚材をヒヌトシヌルする方法を提䟛するもの
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.

䜜甚 加熱䜓ずしお高呚波誘導加熱コむルを甚いお、
端郚材のリム郚の金属局を誘導加熱するので、ヒ
ヌトシヌルのための加熱時間を極く短くする、䟋
えば0.0〜2.0秒第17頁第〜行参照にする
こずができる。たた高呚波誘導加熱コむルは氎冷
华されおいるので、ヒヌトシヌルによ぀お溶融し
た暹脂を、加熱コむルを消勢埌急速に、䟋えば
0.2〜2.0秒第18頁第行参照で固化枩床以䞋
に冷华するこずができる。埓぀お生産性が倧幅に
向䞊する。(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.

端郚材のリム郚の倖壁を抌圧する抌圧郚材は䞻
ずしお金属よりなるが、誘導埪環電流を遮断する
ための電気絶瞁局が蚭けられおいるので、ヒヌト
シヌルのさい抌圧郚材に誘導埪環電流が殆ど流れ
ない。埓぀おヒヌトシヌルのさいの誘導電流のロ
スが少なく、誘導加熱効率が向䞊する。この点か
らもヒヌトシヌルのための加熱時間を極く短くす
るこずができる。 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.

䞊蚘のように抌圧郚材は䞻ずしお金属よりな぀
おいる。金属は䞀般に熱䌝導率が高いので、ヒヌ
トシヌル埌の攟熱を早めお、溶融暹脂の冷华、固
化を促進する。この点からもヒヌトシヌル埌の冷
华時間を極く短くするこずができる。 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.

䞻ずしお金属よりなる抌圧郚材はプラスチツク
等に比べお耐久性が高いので、長時間の䜿甚によ
぀おも摩耗や砎損が起こり難い。このため寿呜が
氞く、亀換のための䜜業を䞭断する頻床が少なく
なるので、この点からも生産性が向䞊する。 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.

抌圧具は、内呚面が開口端郚に接觊した状態に
おけるリム郚倖壁に察応する圢状を有しおおり、
か぀耇数の抌圧郚材よりなるので、抌圧のさい倖
壁に密着する故、密封性の高いヒヌトシヌル郚を
圢成するこずができる。 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.

たたヒヌトシヌル郚が冷华固化した埌抌圧郚材
による抌圧を解陀するのであるから、高呚波誘導
加熱コむルを抜き出すさいに、ヒヌトシヌル郚を
剥すおそれがなく、埓぀お密封䞍良容噚を生じ難
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.

実斜䟋 以䞋図面を参照しながら本発明に぀いお説明す
る。(Example) The present invention will be described below with reference to the drawings.

第図においお、は容噚胎郚であり、は端
郚材この堎合は䜎郚材である。容噚胎郚
は、第図に瀺すように、本䟋においおは倖局
ヒヌトシヌル性暹脂、䟋えば厚さ玄50Όの
ポリ゚チレンフむルム、倖偎䞭間局䟋えば
厚さ玄300Όの玙材、䞭倮䞭間局䟋えば
厚さ玄30Όのポリ゚チレンフむルム、内偎䞭
間局䟋えば厚さ玄15Όのアルミニりム
箔、内局ヒヌトシヌル性暹脂、䟋えば厚さ
箄50Όのポリ゚チレンフむルムよりな぀おお
り局は酞倉性ポリ゚チレン等
の図瀺されない接着剀局によ぀お接着されおい
る、ブランクを円筒状に䞞めた埌、重ね合せ郚
のヒヌトシヌル性暹脂この堎合はポリ゚チレ
ンよりなる倖局ず内局をヒヌトシヌル
するこずによ぀お圢成される。 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 ÎŒm thick), outer intermediate layer 1b (e.g. paper material about 300 ÎŒm thick), central intermediate layer 1c (e.g. polyethylene film about 30 ÎŒm thick), inner intermediate layer 1d (for example, aluminum foil with a thickness of about 15 ÎŒm), and an inner layer 1e (heat-sealable resin, for example, a polyethylene film with a thickness of about 50 ÎŒm) (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.

端郚材は、パネル郚ず、パネル郚呚瞁より
立䞊るリム郚ずを有し、リム郚は断面ほが
字状ほが字状であ぀おもよいであ぀お、垂
盎に立䞊る内壁、および内壁の䞊端郚か
ら、頂郚を介しお倖偎斜䞋方に延びる倖壁
を有しおいる。内壁の倖埄は、容噚胎郚
の開口端郚内に緩挿可胜に、開口端郚の
内埄ず実質的に等しく定められる。内壁の高
さは通垞玄〜10mmである。頂郚の半埄方向
幅は、開口端郚の厚さず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.

端郚材は、本䟋においおは倖局䟋えば
厚さ玄5Όの゚ポキシ・りレア系焌付塗膜、も
しくは厚さ玄12Όの軞延䌞ポリ゚チレンテレ
フタレヌトフむルム、䞭間局2b金属箔、䟋え
ば厚さ玄100Όのアルミニりム箔、および内面
局ヒヌトシヌル性暹脂、䟋えば厚さ玄50ÎŒ
のポリ゚チレンフむルムよりな぀おおり、各
局倖局が焌付塗膜又は印刷膜よりなる堎合
は、䞭間局ず内面局間のみは、酞倉性
ポリ゚チレン等の図瀺されない接着剀局によ぀お
接着されおいる。そしお端郚材は、通垞絞り加
工によ぀お圢成される。埓぀お䞭間局の金属
箔の厚さは絞り加工埌も自己保圢性が保たれる皋
床の厚さ通垞30〜150Ό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 ÎŒm, or a biaxially stretched polyethylene terephthalate film with a thickness of about 12 ÎŒm), an intermediate layer 2b (a metal foil, for example, a aluminum foil of about 100 ÎŒm), and the inner layer 2c (heat-sealable resin, e.g., about 50 ÎŒm 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 ÎŒm) that maintains self-shape retention even after drawing.

は高呚波誘導加熱装眮であ぀お、高呚波誘導
加熱コむル本明现曞においおは、加熱コむル
ず略称する、加熱コむルに内接する高透磁率
材料、䟋えばプラむトよりなる断面コ字型の磁
芯、呚瞁郚が加熱コむルの䞋端郚a1に
接近し、か぀誘導加熱装眮の䞋面に着蚭された
電気良導䜓䟋えば銅又はアルミニりムよりな
り、氎冷パむプによ぀お冷华された磁束マス
ク甚シヌト第図参照、および電気絶瞁性
材料䟋えばベヌクラむト又ぱポキシ暹脂等
のよりなる支持䜓を備えおいる。 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).

加熱コむルは、短円筒圢で金属シヌト通垞
は銅板よりなるよりなるコむル本䜓、およ
びコむル本䜓の䞊郚内偎に固着された氎冷华
パむプを備えおいる。コむル本䜓は、容
噚胎郚の開口端郚に着装された端郚材の
リム郚の内壁に察応する圢状を有しおお
り、奜たしくはコむル本䜓が内壁に緊挿
可胜に内壁ず開口端郚の間に健党なヒ
ヌトシヌル郚が圢成されるように、その倖埄は
内壁の内埄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).

ヒヌトシヌルのさい、開口端郚に密接しお
いる内壁にくらべお、端郚材のパネル郚
の呚瞁郚は熱容量が小さい通垞1/5皋床。
そのためコむル本䜓の䞋端郚a1がパネル郚
に接近しすぎたり、あるいは䞋端郚a1が厚肉
の堎合、呚瞁郚に生ずる磁束の密床が倧にな
぀お、呚瞁郚、特に䞋端郚a1の真䞋の郚分
の内面局第図を圢成するヒヌトシヌル
性暹脂が溶融、流動しお薄くな぀お、内容物を充
填密封埌の保存䞭に䞭間局の金属箔が腐食さ
れ易くなるずいう問題を生ずる。特に液䜓を含む
内容物を充填した埌ヒヌトシヌルする堎合、ヒヌ
トシヌルすべき界面郚分に該液䜓が付着残留した
状態でヒヌトシヌルするず、溶融暹脂䞭の氎蒞気
の透過床が倧きいため、ヒヌトシヌル郚から透過
しおきた氎蒞気が呚瞁郚の溶融した内面局
ず䞭間局の間に気泡を生成し、冷华埌この
気泡に氎分が残留しお、䞭間局の金属箔の腐
食を促進する傟向がある。 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、コむル本
䜓の䞋端郚a1ずパネル郚の䞊面間の距離
がmm以䞊になるように、ヒヌトシヌルのさい
高呚波誘導加熱装眮を装着するこずが望たし
い。さらに距離はmm以䞊であ぀お、か぀䞊蚘
の欠陥が起らない範囲においおできるたけ小さい
こずが、可及的高いヒヌトシヌル郚を確保する䞊
で望たしい。 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.

たた䞋端郚a1は薄肉であるこず、奜たしくは
䞋端郚a1の䞋面a′1の厚さがmm以䞋で、䞋
面a′1よりmm高い郚分における厚さがmm以
䞋である皋床に薄肉であるこずが望たしい。 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の倖局が薄い堎合は、ヒヌ
トシヌル時に誘導加熱された䞭間局金属箔
の熱が氎冷された加熱コむルに逃げ易く、その
ためヒヌトシヌル郚の枩床䞊昇が遅くなり、加熱
時間が長びくため、前蚘の呚瞁郚の異垞加熱
が起り易い。埓぀お倖局の厚さが0.1mmより
薄い堎合は、コむル本䜓の倖面に、シリコン
ゎムシヌトのような匟性䜓特に重ね合せ郚があ
る堎合、もしくは北玠暹脂フむルム重ね合せ
郚がない堎合等に等よりなる熱絶瞁局図瀺さ
れないを蚭けお、コむル本䜓ず䞭間局
間の間隔を0.1mm以䞊2.0mm以䞋にするこずが望た
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は、磁束をリム郚および開口端郚
の金属局䞭間局および内䞭間局に集
䞭させ加熱効率を高め、前述の呚瞁郚におけ
る挏掩磁束を枛少させるずいう䜜甚を有する。シ
ヌトは、磁束がパネル郚の呚瞁郚の内偎
郚の金属局䞭間局内に生じお、そのため
該郚の金属局が加熱され、内面局のヒヌトシ
ヌル性暹脂が溶融するのを防止する䜜甚を有す
る。しかし䜜業条件によ぀おは、必ずしも磁芯
およびたたはシヌトを蚭けなくおもよい。 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.

は、高呚波誘導加熱装眮ぞの、端郚材
挿入、および取倖しを容易にするための゚ア導孔
である。高呚波誘導加熱装眮の以䞊に述べた各
構成郚材は、接着剀により互に接合されおいる。
支持䜓は、フレヌム螺着されおいる。 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図、第図、第図においお、は抌圧
具であ぀お、耇数図では個の開閉可胜の抌
圧䜓を備えおい
る。各抌圧䜓の内偎には、抌圧郚材が固蚭さ
れおおり、抌圧郚材の内呚面は、閉じ
た状態第図、第図の状態においお、容噚
胎郚の開口端郚の倖面に接觊した状態におけ
る端郚材の倖壁に察応する圢状を有するよう
構成されおいる。 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図、第図に瀺すように、各抌圧郚材
の察向する円呚方向端郚には、係
合しお互に円呚方向に摺動可胜な凞郚および
凹郚が蚭けられおいる。すなわち各抌圧郚材
は、入子匏に互に連接するように構成されお
いる。そしお第図に瀺すように、抌圧郚材
で抌圧するこずにより、リム郚ず開口端郚
が接觊した状態においおも、端郚ず端郚
の間に僅かな隙間奜たしく
は玄0.5mm以䞋が生じお、リム郚ず開口端郚
間に所定の抌圧力が加えられるようにな぀お
いる。そしお隙間ずは連続しおいな
い、すなわち入子匏にな぀おいるため、端郚
ず間には軞線方向に連続した隙間が圢成
されない。そのため隙間にもずづくヒヌトシヌル
䞍良郚の発生を防止するこずができる。 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.

抌圧郚材は、耐久性及び加熱効率の芳点か
ら、電気電導床の倧きな金属䟋えばアルミニり
ム合金又は真鍮等のよりなるこずが望たしい。
この堎合抌圧郚材内に円呚方向に流れる埪環
誘導電流が圢成されお、加熱効率を著るしく䜎䞋
するので、各抌圧郚材を半埄方向に延びる電
気絶瞁膜䟋えば゚ポキシ暹脂よりなるで
区分しお、䞊蚘埪環誘導電流が流れないようにす
るこずが望たしい。 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.

抌圧䜓は埪環
誘導電流が圢成されないように、比范的機械的匷
床の倧きい電気絶瞁材料䟋えばベヌクラむト
より圢成されおいる。なお倖壁ず開口端郚
をもヒヌトシヌルする堎合であ぀お、倖壁
の倖局の厚さが0.1mmより薄いずきは、前述
ず同じ理由により、抌圧郚材の内呚面
に熱絶瞁局図瀺されないを蚭けお、内呚面
ず䞭間局金属箔間の距離抌圧䞋に
おけるを0.1mm以䞊、2.0mm以䞋にするこずが望
たしい。容噚胎郚に重ね合せ郚がある堎合は、
シリコンゎムシヌト等の匟性䜓よりなる熱絶瞁局
を蚭けるこずが望たしい。 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.

察向する抌圧䜓およびは、倫々ピ
ストンロツドおよびを介しお、図瀺
されない゚アシリンダヌによ぀お、図の巊右方向
に移動される。抌圧䜓には、抌圧䜓
の方に向぀お倖拡りに延びる察の案内面
を有するガむドプレヌトが固着されおいる。
抌圧䜓のピストンロツド偎の端郚の䞡
偎蟺に蚭けられたフランゞ郚および
に、倫々抌圧䜓およびが軞支されお
いる。抌圧䜓の抌圧郚材偎の端郚
にはロヌラが軞架されおおり、抌圧䜓
およびは、抌圧スプリングによ぀おロ
ヌラが垞時案内面ず接觊するように偏倚
されおいる。そのため第図に瀺すように、抌圧
䜓およびが倫々矢印方向および
方向に埌退するず、抌圧䜓および
は、抌圧郚材が倫々矢印方向および方向
に移動するように遥動し抌圧具は開いた状態
ずなる。この開いた状態から、抌圧䜓
を前進させるず、各ロヌラは案内面
に沿぀お互に接近する方向に移動しお、第図
に瀺すような閉じた状態ずなるように抌圧具
は構成されおいる。 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.

以䞊の装眮によりヒヌトシヌルは次のようにし
お行なわれる。 Heat sealing is performed using the above apparatus as follows.

容噚胎郚をリフタヌプレヌトの䞊に茉眮
し、容噚胎郚の開口端郚に、端郚材のリム
郚を冠装する。次いでリフタヌプレヌトを
移動させお、高呚波誘導加熱装眮の盎䞋に達し
た時停止し、前述の距離が所定倀に達するた
で、リフタヌプレヌトを䞊昇させる。この時
点で抌圧具は開いた状態にある。次に゚アシ
リンダヌ図瀺されないを䜜動させお、抌圧䜓
を閉じる方向に移動させお、抌圧
䜓ず加熱コむル
の協同によ぀お、端郚材の倖壁および内壁
を開口端郚に察し抌圧する。䞊蚘抌圧ず
ほが同時に加熱コむル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.

本䟋の堎合は容噚胎郚は玙材よりなる倖偎䞭
間局を含んでいる。埓぀お䟋えばゞナヌス類
をホツトパツク法により充填、密封し内壁ず開
口端郚の間でのみその埌氎冷した堎合、倖壁
ず開口端郚がヒヌトシヌルされおいない
ず、䞊蚘玙材に氎が浞透しお、容噚胎郚が軟
化、倉圢しお、䞍良容噚ずなる。埓぀おこのよう
な堎合は、倖壁ず開口端郚間も完党にヒ
ヌトシヌルする必芁がある。そのためには通電さ
れる高呚波電流の呚波数0を、開口端郚に接
觊した倖壁の䞭間局の金属箔に十分な誘
導電流が流れる皋床に䜎くする必芁がある。 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.

䞀般に高呚波電流の浞透深さは、次の匏か
ら求められる。 Generally, the penetration depth t of high-frequency current is obtained from the following equation 1.

ここには呚波数、σおよびΌは、倫々被加熱
金属本䟋ではアルミニりムの電気䌝導率
MKS単䜍、および透磁率MKS単䜍であ
る。埓぀お本䟋の堎合、内壁、容噚胎郚お
よび倖壁に含たれるアルミニりム箔の厚さの
和をずするず、前蚘呚波数0を、ほがπΌσt2
よ り䜎く定める必芁がある。 Here, the frequency, σ and ÎŒ 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/πΌσt 2
It is necessary to set it lower.

加熱コむルに、䞊蚘呚波数0の高呚波電流を
通電するこずによ぀お、内壁、開口端郚
倖壁の金属箔が誘導加熱され、そのため加熱
された金属箔郚分に接するヒヌトシヌル性暹脂で
あるポリ゚チレンがヒヌトシヌル可胜枩床以䞊
融点110℃のポリ゚チレンの堎合䟋えば150℃
に、抌圧䞋に昇枩しお、内壁ず開口端郚
の間、および倖壁ず開口端郚の間でヒヌ
トシヌルが行なわれる。 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、すなわちシヌトシヌル時間は、0.1
〜2.0秒であるこずが望たしい。0.1秒より短かい
堎合は金属局が溶融、もしくは暹脂局が焌損し易
く、䞀方秒より長い堎合は、ヒヌトシヌル郚
熱絶瞁局を含むの熱容量枩床×䜓積が倧
きくなりすぎお、埌述の冷华時間が長くなるため
である。たた冷华された加熱コむルによる吞熱量
が倧ずな぀お、加熱効率が䜎䞋するからである。 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.

各抌圧郚材は、入子匏に連接しおいるの
で、抌圧は開口端郚に沿぀おほが均䞀に行な
われ、抌圧されない郚分にもずづくヒヌトシヌル
欠陥郚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.

次いで加熱コむルを消勢し、ヒヌトシヌル郚の
圓該シヌトシヌル性暹脂が固化枩床結晶性暹脂
の堎合は融点より䜎い枩床、無定圢暹脂の堎合は
軟化点より䜎い枩床より䜎い枩床に冷华した埌
ヒヌトシヌル郚にピンホヌル等の欠陥発生を防
止のため、抌圧具を開いお、抌圧を解陀し、
リフタヌを䞋げお誘導加熱装眮から端郚材
を取倖す。氎冷华パむプによ぀おコむル本
䜓は冷华されおいるので䞊蚘冷华時間は短か
く、通垞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.

このように冷华時間を短かくするためには、加
熱コむルの通電時間ずむンタヌバルを䟋えば
にしお、コむル本䜓の比范的長い冷华
時間をずるこずが望たしい。生産性を䜎䞋するこ
ずなく、必芁な通電むンタヌバルをずるために
は、耇数個䟋えば個の高呚波誘導加熱装眮
が円呚方向に配蚭されたタヌレツト方匏のヒヌ
トシヌル装眮を甚いればよい。 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. .

䞊蚘のようにしお底郚材が容噚胎郚にヒヌトシ
ヌルされた容噚が圢成されるが、䞊蚘容噚に内容
物を充填した埌、同様にしお蓋郚材をヒヌトシヌ
ルするこずによ぀お密封容噚が補造される。 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.

本発明は以䞊の䟋によ぀お制限されるものでな
ない。䟋えば容噚胎郚は玙材を含むこずなく、プ
ラスチツクのみプラスチツクの積局䜓を含む
この堎合は、抌出機によ぀お継目なし容噚胎郚を
圢成しおもよいよりなるもの、もしくはプラス
チツクず金属箔の積局䜓よりなるものであ぀おも
よい。この堎合は氎の浞透による軟化のおそれが
ないので、内壁のみのヒヌトシヌルでもよい。し
かし蓋郚材のヒヌトシヌルの堎合は、内容物の氎
分が開口端郚の内面に付着しおヒヌトシヌル郚に
ピンホヌル等が発生するおそれがあるので、倖壁
をも同時にヒヌトシヌルするこずが望たしい。さ
らに容噚胎郚は隅䞞角筒䞊等の適宜の圢状をずり
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.

たた端郚材の倖面は金属局が露出したものであ
぀おもよい。ただしこの堎合は短絡による攟電を
防止するためず、前述のパネル郚呚瞁郚の過
熱防止のため、コむル本䜓の倖呚面を電気お
よび熱絶瞁性被膜で被芆する必芁がある。たた倖
壁をもヒヌトシヌルする堎合にも、同様の理
由で抌圧郚材の内呚面を電気および熱絶瞁性
被膜で被芆する必芁がある。 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.

なお抌圧䜓の数は個以䞊が望たしい。
個の堎合には、抌圧郚材の呚方向端郚近傍
で、半埄方向偎に向う抌圧力を十分に䜜甚させる
こずができないので、該郚近傍でヒヌトシヌル欠
陥郚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図に瀺す加熱コむル′のように、
コむル本䜓′は薄い金属シヌトを積局巻きし
おなるものであ぀おもよい。この堎合もコむル本
䜓の䞋端郚′a1は、前述の範囲内で薄肉である
こずが望たしい。 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 本発明の容噚胎郚に端郚材をヒヌトシヌルする
方法は、生産性が高く、か぀密封䞍良容噚を生じ
難いずいう効果を奏する。(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図は本発明の方法を実斜するための装眮の
䟋の芁郚瞊断面図、第図は第図の郚の拡倧
瞊断面図、第図は第図の郚の抌圧䞋におけ
る状態を瀺す拡倧瞊断面図、第図は第図に甚
いられる抌圧具の閉じた状態を瀺す平面図、第
図は第図の−線に沿う瞊断面図、第図は
第図の抌圧具の開いた状態を瀺す平面図、第
図は第図の−線に沿う瞊断面図、第図は
第図の−線に沿う瞊断面図、第図は本発
明の実斜に甚いられる他の䟋の加熱コむルを瀺す
芁郚瞊断面図である。   容噚本䜓、  開口端郚、  
内局ヒヌトシヌル性暹脂よりなる局、  
端郚材、  䞭間局金属箔よりなる局、
  内面局ヒヌトシヌル性暹脂よりなる
局、  パネル郚、  リム郚、  
内壁、  倖壁、′  加熱コむル、
  抌圧具、  抌圧郚材。 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)

【特蚱請求の範囲】[Claims]  容噚胎郚の少なくずも内局がヒヌトシヌル性
暹脂よりなる開口端郚に、パネル郚ず、該パネル
郚呚瞁より立䞊る断面ほが字圢又は字圢の、
内面局がヒヌトシヌル性暹脂よりなり、か぀金属
局を含むリム郚を有する端郚材の該リム郚を冠装
し、該リム郚の内壁に、倖呚面が該内壁に察応す
る圢状を有する氎冷华された高呚波誘導加熱コむ
ルを圓接又は察向させ、内呚面が、該開口端郚に
接觊した状態における該倖壁に察応する圢状を有
し、誘導埪環電流を遮断するための電気絶瞁局が
蚭けられた䞻ずしお金属よりなる耇数の抌圧郚材
を備えた抌圧具ず、該加熱コむルずの協同によ
り、該リム郚の倖壁ず内壁を該開口端郚に抌圧
し、該加熱コむルに通電しお、少なくずも該内壁
の該金属局を高呚波誘導加熱しお、該内局および
該内面局のヒヌトシヌル性暹脂の枩床をヒヌトシ
ヌル可胜枩床たで䞊昇させ、ヒヌトシヌル郚を圢
成した埌、該加熱コむルを消勢し、該ヒヌトシヌ
ル郚が冷华固化した埌䞊蚘抌圧を解陀するこずを
特城ずする容噚胎郚に端郚材をヒヌトシヌルする
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 北海補眐株匏䌚瀟 Bonder
JPS62238767A (en) * 1986-04-10 1987-10-19 Ngk Insulators Ltd Recorder
JPH07232391A (en) * 1994-02-25 1995-09-05 Nitto Shoji Kk Method for manufacturing flammable container and flammable container

Also Published As

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

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