JPS6250122A - Method for welding thermoplastic resin - Google Patents

Method for welding thermoplastic resin

Info

Publication number
JPS6250122A
JPS6250122A JP60190588A JP19058885A JPS6250122A JP S6250122 A JPS6250122 A JP S6250122A JP 60190588 A JP60190588 A JP 60190588A JP 19058885 A JP19058885 A JP 19058885A JP S6250122 A JPS6250122 A JP S6250122A
Authority
JP
Japan
Prior art keywords
heat
generating material
welding
resin
high frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60190588A
Other languages
Japanese (ja)
Other versions
JPH0511022B2 (en
Inventor
Tatsuo Suzuki
鈴木　龍夫
Keinosuke Isono
啓之介 磯野
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP60190588A priority Critical patent/JPS6250122A/en
Publication of JPS6250122A publication Critical patent/JPS6250122A/en
Publication of JPH0511022B2 publication Critical patent/JPH0511022B2/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
    • 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
    • B29C65/3644—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 ribbon, band or strip
    • B29C65/3652—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 ribbon, band or strip forming a sleeve, e.g. a wrap-around sleeve
    • 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
    • B29C65/362—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 comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3632—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 comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C65/364—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 woven or non-woven fabric or being a mesh
    • 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
    • B29C65/3644—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 ribbon, band or strip
    • 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
    • B29C65/3644—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 ribbon, band or strip
    • B29C65/3648—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 ribbon, band or strip said strip being perforated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/3684—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 non-metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5028—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being textile in woven or non-woven form
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to 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
    • B29C66/50—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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • 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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • 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
    • B29C65/38—Impulse heating
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0006—Dielectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0008—Magnetic or paramagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags

Abstract

PURPOSE:To attain the enhancement of mass production by simplifying the welding of a resin having a complicated shape or a large thickness and shortening a cooling time, by interposing a specific material generating heat by high frequency dielectric heating between the mutual welding surfaces of thermoplastic resins. CONSTITUTION:As a heat-generating material generating heat by high frequency dielectric heating, a heat-generating material having a larger value of dielectric loss such as polyvinyl chloride resin or polyamide resin or a heat-generating material made of a ferromagnetic material such as ferrite is suitable. Welding is performed as follows. At first, a mesh made of a polyamide resin is arranged to the outer peripheral surface of a mouth part 2 made of high-density polyethylene as a heat-generating material 7 and the mouth part 2 having the heat generating material 7 arranged thereto is inserted in the upper end part 4 of a container 1 made of straight-chain low-density polyethylene and pushed therein from the outside by a high-frequency mold 8 to oscillate high frequency wave. By this method, the mouth part 2 is firmly welded to the upper end part 4 of the container 1.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、熱可塑性樹脂の溶着方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for welding thermoplastic resins.

さらに詳しくは、誘電損失の値の小さな同種又は異種の
熱可塑性樹脂を高周波誘電加熱又は高周波誘導加熱によ
り溶着する方法に関する。More specifically, the present invention relates to a method of welding thermoplastic resins of the same type or different types having a small dielectric loss value by high-frequency dielectric heating or high-frequency induction heating.

［従来の技術］ 従来からある同種又は異種の熱可塑性樹脂を溶着する方
法としては、ヒートシール法、インパルスシール法、高
周波融着法、超音波融着法等が知られている。ヒートシ
ール法は、同種あるいは相溶性のある異種のほとんどの
熱可塑性樹脂を溶着できる。しかし、肉厚の熱可塑性樹
脂の溶着が困難であり、かつ溶着部が奇麗に仕上がらな
かった。[Prior Art] Conventionally known methods for welding thermoplastic resins of the same type or different types include a heat sealing method, an impulse sealing method, a high frequency welding method, an ultrasonic welding method, and the like. The heat sealing method can weld most thermoplastic resins of the same type or compatible different types. However, it was difficult to weld the thick thermoplastic resin, and the welded part was not finished neatly.

さらに加熱溶融後、長い冷却時間を必要とするので量産
性を高めるのが困難であった。また、−イン　・パルス
シール法も、ヒートシール法と同様に、はとんどの熱可
塑性樹脂を溶着できるが肉厚の熱可塑性樹脂の溶着が困
難であり、また複雑な形状のヒーターを作製するのが困
難であるため複雑な形状の溶着ができなかった。高周波
融着法は、肉厚の熱可塑性樹脂も溶着でき冷却時間も短
くてすみ。Furthermore, after heating and melting, a long cooling time is required, making it difficult to increase mass productivity. Also, like the heat sealing method, the -in pulse sealing method can weld most thermoplastic resins, but it is difficult to weld thick thermoplastic resins, and it is difficult to fabricate heaters with complicated shapes. It was difficult to weld complex shapes. The high-frequency welding method can weld even thick thermoplastic resins and requires a short cooling time.

複雑な形状の溶着も可能である。しかし、ポリ塩化ビニ
ル樹脂のような誘電損失の値が大きな樹脂しか溶着でき
ないという欠点があった。超音波融着法は、硬質の熱可
塑性樹脂の溶着は可能であるが、軟質の熱可塑性樹脂の
溶着は困難でありさらに形状が限定されるという欠点が
あった。Welding of complex shapes is also possible. However, there was a drawback that only resins with large dielectric loss values such as polyvinyl chloride resins could be welded. The ultrasonic welding method is capable of welding hard thermoplastic resins, but has the disadvantage that it is difficult to weld soft thermoplastic resins, and furthermore, the shape is limited.

［発明が解決しようとする問題点１ 以上のように従来の溶着方法には、はとんどの熱可塑性
樹脂を肉厚にあまり影響されることなく複雑な形状にお
いても溶着が可能であり、かつ冷却時間が短いという全
ての条件を満足できるものはなかった。[Problem to be solved by the invention 1 As described above, the conventional welding method is capable of welding most thermoplastic resins even in complex shapes without being affected by wall thickness, and There was no one that could satisfy all the conditions of short cooling time.

［問題点を解決するための手段］ 本発明は１通常、高周波融着できない誘電損失の値の小
さな同種又は異種の熱可塑性樹脂の溶着面間に、誘電損
失の値が大きな発熱材料又は強磁性体の発熱材料を位置
させ、該熱可塑性樹脂を溶融することを特徴とする溶着
方法を提供することによって従来の問題点を解決した。[Means for Solving the Problems] The present invention has the following features: 1. Normally, a heat-generating material or ferromagnetic material with a large dielectric loss value is used between the welding surfaces of the same or different thermoplastic resins with a small dielectric loss value, which cannot be welded by high frequency. The conventional problems have been solved by providing a welding method characterized by positioning a heat generating material in a body and melting the thermoplastic resin.

［作用］ 本発明者らは、高周波融着できない熱可塑性樹脂を、複
雑な形状あるいは肉厚のものでも容易に溶着でき、短い
冷却時間ですみ量産性に富み、しかも仕上がり状態が奇
麗な溶着方法を開発すべく種々検討した結果、熱可塑性
樹脂の溶着面の少なくとも一部に誘電損失の値が大きな
発熱材料を設置し、外部より高周波誘電加熱により該発
熱材料を誘電加熱し発熱させ、該発熱材料の周辺の熱可
塑性樹脂を溶融させ溶着することにより、また。[Function] The present inventors have developed a welding method that can easily weld thermoplastic resins that cannot be welded by high frequency, even if they have complex shapes or thick walls, requires only a short cooling time, is highly suitable for mass production, and has a beautiful finish. As a result of various studies to develop a thermoplastic resin, we installed a heat-generating material with a large dielectric loss value on at least a part of the welding surface of the thermoplastic resin, dielectrically heated the heat-generating material using high-frequency dielectric heating from the outside, and generated heat. Also by melting and welding the thermoplastic around the material.

熱可塑性樹脂の溶着面の少なくとも一部に１強磁性体の
発熱材料を設置し、外部より高周波誘導加熱により、該
発熱材料を誘導加熱し発熱させ、該発熱材料の周辺の熱
可塑性樹脂を溶融させ溶着することにより、複雑な形状
あるいは肉厚のものでも容易に溶着でき、短い冷却時間
ですみ量産性に富み、しかも仕上がり状態が奇麗である
ことを見い出し本発明を完成するに至った。A ferromagnetic heat-generating material is installed on at least a part of the welding surface of the thermoplastic resin, and the heat-generating material is induction-heated to generate heat using high-frequency induction heating from the outside, and the thermoplastic resin around the heat-generating material is melted. The present inventors have discovered that by welding, even objects with complex shapes or thick walls can be easily welded, it requires only a short cooling time, is highly suitable for mass production, and the finished state is beautiful, and the present invention has been completed.

誘電損失の大きな値の発熱材料に高周波電流を通じると
２発熱材料分子の衝突、摩擦により発熱し、その発熱量
Ｐは次式で示される。When a high-frequency current is passed through a heat-generating material having a large dielectric loss, heat is generated due to collision and friction between the molecules of the two heat-generating materials, and the amount of heat generated P is expressed by the following equation.

ここで、に：比定数、ε：誘電率、　ｔａｎδ：誘電損
失、ｆ：周波数、■＝電極間電圧、ｄ：電極間距離であ
る。この式から明らかなように、誘電損失の値が大きい
ほど発熱量は多く、被溶着材料である熱可塑性樹脂を充
分に溶融させ溶着することができる。Here, ni: specific constant, ε: dielectric constant, tan δ: dielectric loss, f: frequency, ■=voltage between electrodes, and d: distance between electrodes. As is clear from this equation, the larger the dielectric loss value, the greater the amount of heat generated, and the thermoplastic resin that is the material to be welded can be sufficiently melted and welded.

また１強磁性体の発熱材料を高周波磁界中に入れると、
ヒステリシス損と過電流のジュール効果により効率的に
発熱する。ヒステリシス損による発熱量Ｐ１は次式で示
される。Furthermore, when a ferromagnetic heat-generating material is placed in a high-frequency magnetic field,
Efficient heat generation due to hysteresis loss and Joule effect of overcurrent. The amount of heat generated P1 due to hysteresis loss is expressed by the following equation.

ここで、工：コイル電流、ｄ：コイルとの距離。Here, k: coil current, d: distance from the coil.

μ：有効透磁率、ｒ：固有抵抗、ｆ：周波数である。μ: effective magnetic permeability, r: specific resistance, f: frequency.

また、過電流のジュール効果による発熱量Ｐ２は次式で
示される。Further, the amount of heat generated P2 due to the Joule effect of overcurrent is expressed by the following equation.

ここで、に：比定数、Ｎ：コイルの巻数、ρ：電気比抵
抗である。式（２）及び式（３）がら明らかなように、
ヒステリシス損による発熱量Ｐ１に比して過電流のジュ
ール効果による発熱量Ｐ２のほうが遥かに大きな値であ
る。それゆえ、有効透磁率μの値が大きいすなわち強磁
性体はど発熱量は多く、被溶着材料である熱可塑性樹脂
を充分に溶融させ溶着することができる。Here, N: specific constant, N: number of turns of the coil, and ρ: electrical specific resistance. As is clear from equations (2) and (3),
The amount of heat generated P2 due to the Joule effect of overcurrent is much larger than the amount of heat generated P1 due to hysteresis loss. Therefore, a ferromagnetic material with a large value of effective magnetic permeability μ, that is, a large amount of heat generated, can sufficiently melt and weld the thermoplastic resin that is the material to be welded.

高周波融着できない熱可塑性樹脂とは、誘電損失の値が
小さいものであり、ポリエチレン、ポリプロピレン等の
オレフィン系樹脂、熱可塑性ポリウレタン等が挙げられ
る。これら高周波融着できない熱可塑性樹脂の溶着した
い面と面の間の−部分に設置する発熱材料としては、誘
電損失の値が大きなポリ塩化ビニル樹脂、ポリアミド樹
脂、ポリエステル樹脂、エチレン−酢酸ビニル共重合体
等があり、また１強磁性体である鉄、フェライト。Thermoplastic resins that cannot be high-frequency fused have a small dielectric loss value, and include olefin resins such as polyethylene and polypropylene, thermoplastic polyurethane, and the like. Heat-generating materials to be installed between the surfaces of thermoplastic resins that cannot be welded by high frequency include polyvinyl chloride resin, polyamide resin, polyester resin, and ethylene-vinyl acetate copolymer resin, which have large dielectric loss values. There are combinations, etc., and iron and ferrite, which are ferromagnetic materials.

ステンレス、アルミニウム等の導体が挙げられる。Examples include conductors such as stainless steel and aluminum.

より好ましくは、ポリ塩化ビニル樹脂、ポリアミド樹脂
、エチレン−酢酸ビニル共重合体、鉄、フェライト、ス
テンレスである。　　′ 発熱材料は、誘電損失の値が大きく溶着したい熱可塑性
樹脂の融点より高い融点を有する樹脂が好ましい。すな
わち、高周波誘電加熱により、被溶着材料である熱可塑
性樹脂よりも発熱材料が先に溶融してしまうと熱可塑性
樹脂の溶着面間で変形及び流出してしまい、溶着面での
単位面積当たりの熱容量が小さくなり熱可塑性樹脂を溶
融しにくくなってしまい溶着が不完全になる。発熱材料
が被溶着材料である熱可塑性樹脂の融点よりも高いと１
発熱材料が溶融及び変形する前に熱可塑性樹脂を充分に
溶融することができるので、溶着を完全に行うことがで
きる。More preferred are polyvinyl chloride resin, polyamide resin, ethylene-vinyl acetate copolymer, iron, ferrite, and stainless steel. ' The heat generating material is preferably a resin that has a large dielectric loss value and a melting point higher than the melting point of the thermoplastic resin to be welded. In other words, if the heat-generating material melts earlier than the thermoplastic resin that is the material to be welded due to high-frequency dielectric heating, the thermoplastic resin will deform and flow between the welding surfaces, and the per unit area of the welding surface will decrease. The heat capacity decreases, making it difficult to melt the thermoplastic resin, resulting in incomplete welding. 1 if the heat generating material is higher than the melting point of the thermoplastic resin to be welded.
Since the thermoplastic resin can be sufficiently melted before the heat-generating material melts and deforms, welding can be performed completely.

本発明の溶着方法は、溶着面側が溶融して溶着されるの
で、内部発熱を利用したポリ塩化ビニル樹脂を高周波融
着て溶着するのと同様に、溶着が完全であり奇麗にしあ
がる。In the welding method of the present invention, the welding surface side is melted and welded, so the welding is complete and clean, similar to the welding of polyvinyl chloride resin by high frequency welding using internal heat generation.

［実施例］ 以下図面に基すいて９本発明の方法をさらに詳しく説明
する。第１図に柔軟なプラスチック容器１を示す、プラ
スチック容器１は２口元部２と容器部３から構成される
。口元部２は、高密度ポリエチレンで射出成形法により
形成される。容器部３は、直鎖状低密度ポリエチレンで
インフレーション成形法によって得られるチューブ状シ
ートの両端開放端を溶着することによって得たものであ
る。また、押出し成形によって得られたシート二枚を重
ね合わせ、その周縁部を溶着することによっても得るこ
とができる。容器部３の下端部５は通常のヒートシール
で溶着され懸垂口６が設けられている。口元部２は、容
器部３の上端部４で本発明の方法によって溶着されてい
る。口元部２と上端部４の溶着方法の詳細を第２図に示
す。口元部２の外周面に発熱材料７として、ナイロンメ
ツシュを設置する。ナイロンメツシュを設置した口元部
２を上端部４に挿入し、外側から高周波金型８で押え込
み、高周波を発振させる。使用する高周波は、一般的に
４０．６ＭＨｚが多い。この状態で高周波を発振させる
とナイロンメツシュが発熱し、ナイロンメツシュの周辺
の上端部４の直鎖状低密度ポリエチレン及び口元部２の
高密度ポリエチレンが溶融し、ナイロンメツシュの周辺
及びナイロンメツシュの網目の開口部において互いに接
触し溶着される。溶着された口元部２の断面図を第３図
にしめす。高密度ポリエチレン製の口元部２と直鎖状低
密度ポリエチレン製の上端部４のナイロンメツシュの周
辺及びナイロンメツシュの網目の開口部において、それ
ぞれ液密に溶着されている。第３図に示した実施例では
９口元部２と上端部４の溶着部以外の上端部４の溶着は
１通常のヒートシールで行っているが、この上端部４に
おいてもナイロンメツシュを挟持し本発明の溶着方法を
用いて溶着してもよい。[Example] The method of the present invention will be explained in more detail below based on the drawings. FIG. 1 shows a flexible plastic container 1. The plastic container 1 is composed of two mouth parts 2 and a container part 3. The mouth portion 2 is formed of high-density polyethylene by injection molding. The container portion 3 is obtained by welding the open ends of a tubular sheet made of linear low-density polyethylene obtained by inflation molding. It can also be obtained by overlapping two sheets obtained by extrusion molding and welding their peripheral edges. The lower end portion 5 of the container portion 3 is welded by ordinary heat sealing and is provided with a suspension opening 6. The mouth portion 2 is welded to the upper end portion 4 of the container portion 3 by the method of the present invention. Details of the method of welding the mouth part 2 and the upper end part 4 are shown in FIG. A nylon mesh is installed as a heat generating material 7 on the outer peripheral surface of the mouth part 2. The mouth portion 2 on which the nylon mesh is installed is inserted into the upper end portion 4 and pressed from the outside with a high frequency mold 8 to oscillate high frequency waves. The high frequency used is generally 40.6 MHz. When a high frequency wave is oscillated in this state, the nylon mesh generates heat, and the linear low-density polyethylene at the upper end 4 around the nylon mesh and the high-density polyethylene at the mouth part 2 melt, and the nylon mesh around the nylon mesh and the nylon mesh melt. They come into contact with each other at the openings of the mesh and are welded together. A cross-sectional view of the welded mouth portion 2 is shown in FIG. The mouth part 2 made of high density polyethylene and the upper end part 4 made of linear low density polyethylene are welded in a liquid-tight manner around the nylon mesh and at the openings of the nylon mesh. In the embodiment shown in FIG. 3, the welding of the upper end 4 other than the welded part between the mouth part 2 and the upper end 4 is done by ordinary heat sealing. However, the welding may be performed using the welding method of the present invention.

発熱材料の構造として、実施例では第４図に示す網目構
造体を挙げたが、第５図に示す帯状のものでも良いし、
第６図に示す線状のものを数本組み合わせたものでも良
い。いずれにしても、溶着したい熱可塑性樹脂の溶着面
の面積よりも小さい面積の発熱材料を用いることが必要
である。As the structure of the heat-generating material, the mesh structure shown in FIG. 4 is used in the example, but it may also be a belt-like structure shown in FIG.
A combination of several linear wires shown in FIG. 6 may also be used. In any case, it is necessary to use a heat generating material having an area smaller than the area of the welding surface of the thermoplastic resin to be welded.

次に、高周波誘導加熱を用いた溶着法について述べる。Next, a welding method using high frequency induction heating will be described.

第７図に示したように９発熱材料７として鉄製のメツシ
ュを用い９口元部２の外周面にその鉄製のメツシュを設
置する。鉄製のメツシュを設置した口元部２を上端部４
に挿入し、外側から圧縮用治具９で僅かに加圧しながら
高周波磁界中に入れると、鉄製のメツシュが発熱し、そ
の周辺の上端部４の直鎖状低密度ポリエチレン及び口元
部２の高密度ポリエチレンが溶融し鉄製のメツシュの周
辺及び鉄製のメツシュの網目の開口部において互いに接
触し溶着される。高周波磁界は、誘導コイル１０に高周
波電流を流すことによって得られる。使用される高周波
は４００ｋＨｚ〜４ＭＨｚのものが一般的である。As shown in FIG. 7, an iron mesh is used as the heat generating material 7, and the iron mesh is installed on the outer peripheral surface of the mouth portion 2. The mouth part 2 with the iron mesh installed is connected to the upper end part 4.
When inserted into a high-frequency magnetic field while applying slight pressure from the outside with a compression jig 9, the iron mesh generates heat, and the linear low-density polyethylene at the upper end 4 and the high-profile mouth part 2 around it generate heat. The density polyethylene is melted and welded to contact with each other around the iron mesh and at the openings of the iron mesh. The high frequency magnetic field is obtained by passing a high frequency current through the induction coil 10. The high frequency used is generally between 400 kHz and 4 MHz.

以上のようにして作製したプラスチック容器に水を注入
し１口元部２の開口部に高密度ポリエチレン製フィルム
（０，２ｍｍ厚）を熱溶着し容器を密封後ゴム栓を装着
した。この容器を１１５℃で４０分間高圧蒸気滅菌しが
、変形、破裂、水漏れはなかった。Water was poured into the plastic container prepared as described above, a high-density polyethylene film (0.2 mm thick) was heat welded to the opening of the mouth portion 2, the container was sealed, and a rubber stopper was attached. This container was autoclaved at 115° C. for 40 minutes, but no deformation, rupture, or water leakage occurred.

［発明の効果］ 以上述べた本発明の溶着方法は、以下に示す利点を有す
る。[Effects of the Invention] The welding method of the present invention described above has the following advantages.

誘電損失の値が小さい高周波融着出来ない熱可塑性樹脂
を、高周波誘電加熱あるいは高周波誘導加熱を用いて溶
着できるので、複雑な形状の溶着。Thermoplastic resins that cannot be welded by high frequency because of their small dielectric loss value can be welded using high frequency dielectric heating or high frequency induction heating, making it possible to weld complex shapes.

肉厚樹脂の溶着が容易になり、冷却時間が短くて済むの
で量産性に優れている。It is easy to weld thick resin and requires only a short cooling time, making it suitable for mass production.

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

第１図は本発明の溶着方法によって作製したプラスチッ
ク容器を示す平面図、第２図は口元部の溶着方法を示す
横断面図、第３図は溶着された口元部の縦断面図、第４
図ないし第６図は発熱材料の形態を示す平面図、第７図
は別の実施例の口元部の溶着方法を示す横断面図である
。 １・・・プラスチック容器、２・・・口元部、３・・・
容器部。 ４・・・上端部、５・・・下端部、６・・・懸垂口、７
・・・発熱材料、８・・・高周波金型、９・・・圧縮用
治具。 １０・・・誘導コイルFIG. 1 is a plan view showing a plastic container manufactured by the welding method of the present invention, FIG. 2 is a cross-sectional view showing the method for welding the mouth part, FIG. 3 is a longitudinal cross-sectional view of the welded mouth part, and FIG.
6 through 6 are plan views showing the form of the heat-generating material, and FIG. 7 is a cross-sectional view showing a method of welding the mouth portion of another embodiment. 1...Plastic container, 2...Mouth, 3...
Container section. 4... Upper end, 5... Lower end, 6... Suspension opening, 7
... Heat generating material, 8... High frequency mold, 9... Compression jig. 10...Induction coil

Claims (5)

【特許請求の範囲】[Claims] （１）誘電損失の値の小さな同種又は異種の熱可塑性樹
脂を高周波を用いて溶着する方法であって、熱可塑性樹
脂の溶着面間に、誘電損失の値が大きな発熱材料または
強磁性体の発熱材料を位置させ、高周波誘電加熱又は高
周波誘導加熱により該発熱材料を発熱させて該熱可塑性
樹脂を溶着面間で溶融することを特徴とする溶着方法。(1) A method of welding thermoplastic resins of the same type or different types with a small dielectric loss value using high frequency, in which a heat-generating material or a ferromagnetic material with a large dielectric loss value is placed between the welding surfaces of the thermoplastic resins. A welding method comprising: positioning a heat-generating material; and causing the heat-generating material to generate heat by high-frequency dielectric heating or high-frequency induction heating to melt the thermoplastic resin between welding surfaces. （２）該発熱材料が、該熱可塑性樹脂よりも実質的に高
い溶融開始温度を有することを特徴とする特許請求の範
囲第１項記載の溶着方法。(2) The welding method according to claim 1, wherein the heat generating material has a melting start temperature substantially higher than that of the thermoplastic resin. （３）該発熱材料が網目構造を有することを特徴とする
特許請求の範囲第１項または第２項記載の溶着方法。(3) The welding method according to claim 1 or 2, wherein the heat generating material has a network structure. （４）該発熱材料が帯状又は線状であることを特徴とす
る特許請求の範囲第１項または第２項記載の溶着方法。(4) The welding method according to claim 1 or 2, wherein the heat generating material is strip-shaped or linear. （５）該発熱材料がポリ塩化ビニル樹脂、ポリアミド樹
脂、エチレン−酢酸ビニル共重合体、ポリエステル樹脂
、鉄、フェライト、ステンレス、アルミニウムの内より
選ばれた少なくとも１種である特許請求の範囲第１項な
いし第４項のいずれかに記載の溶着方法。(5) Claim 1, wherein the heat generating material is at least one selected from polyvinyl chloride resin, polyamide resin, ethylene-vinyl acetate copolymer, polyester resin, iron, ferrite, stainless steel, and aluminum. The welding method according to any one of Items 1 to 4.
JP60190588A 1985-08-29 1985-08-29 Method for welding thermoplastic resin Granted JPS6250122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60190588A JPS6250122A (en) 1985-08-29 1985-08-29 Method for welding thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60190588A JPS6250122A (en) 1985-08-29 1985-08-29 Method for welding thermoplastic resin

Publications (2)

Publication Number Publication Date
JPS6250122A true JPS6250122A (en) 1987-03-04
JPH0511022B2 JPH0511022B2 (en) 1993-02-12

Family

ID=16260563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60190588A Granted JPS6250122A (en) 1985-08-29 1985-08-29 Method for welding thermoplastic resin

Country Status (1)

Country Link
JP (1) JPS6250122A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0197624A (en) * 1987-10-09 1989-04-17 Daiwa Kobunshi Kogyo Kk Junction of sheet
WO1991015706A1 (en) * 1990-03-30 1991-10-17 Kubota Corporation Electrically fusion-bonded joint
JPH06179240A (en) * 1992-05-08 1994-06-28 Sakaguchi Dennetsu Kk Bonding method of thermoplastic resin sheet
US6706136B2 (en) 2001-10-16 2004-03-16 Toyo Boseki Kabushiki Kaisha Resin composition for high-frequency bonding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709775A (en) * 1964-06-11 1973-01-09 Heller W Product compositions for magnetic induction methods to treat and heatseal predetermined areas of parent units
JPS4894929A (en) * 1972-03-17 1973-12-06
JPS5265A (en) * 1975-06-23 1977-01-05 Ichiro Teraoka Method of purifying water quality
JPS5321903A (en) * 1976-08-11 1978-02-28 Fujitsu Ltd Preparation of magnetic disc substrate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709775A (en) * 1964-06-11 1973-01-09 Heller W Product compositions for magnetic induction methods to treat and heatseal predetermined areas of parent units
JPS4894929A (en) * 1972-03-17 1973-12-06
JPS5265A (en) * 1975-06-23 1977-01-05 Ichiro Teraoka Method of purifying water quality
JPS5321903A (en) * 1976-08-11 1978-02-28 Fujitsu Ltd Preparation of magnetic disc substrate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0197624A (en) * 1987-10-09 1989-04-17 Daiwa Kobunshi Kogyo Kk Junction of sheet
WO1991015706A1 (en) * 1990-03-30 1991-10-17 Kubota Corporation Electrically fusion-bonded joint
US5462314A (en) * 1990-03-30 1995-10-31 Gas Research Institute Electro-fusion fitting having a solid embedded heater with perpendicular projections
JPH06179240A (en) * 1992-05-08 1994-06-28 Sakaguchi Dennetsu Kk Bonding method of thermoplastic resin sheet
US6706136B2 (en) 2001-10-16 2004-03-16 Toyo Boseki Kabushiki Kaisha Resin composition for high-frequency bonding

Also Published As

Publication number Publication date
JPH0511022B2 (en) 1993-02-12

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