JPH0511022B2 - - Google Patents

Info

Publication number
JPH0511022B2
JPH0511022B2 JP60190588A JP19058885A JPH0511022B2 JP H0511022 B2 JPH0511022 B2 JP H0511022B2 JP 60190588 A JP60190588 A JP 60190588A JP 19058885 A JP19058885 A JP 19058885A JP H0511022 B2 JPH0511022 B2 JP H0511022B2
Authority
JP
Japan
Prior art keywords
heat
generating material
welding
high frequency
heat generating
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
JP60190588A
Other languages
Japanese (ja)
Other versions
JPS6250122A (en
Inventor
Tatsuo Suzuki
Keinosuke Isono
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.)
SHINSOZAI SOGO KENKYUSHO KK
Original Assignee
SHINSOZAI SOGO KENKYUSHO KK
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 SHINSOZAI SOGO KENKYUSHO KK filed Critical SHINSOZAI SOGO KENKYUSHO KK
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 protrusions 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 protrusions 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

Landscapes

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

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。
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
誘電加熱により溶着する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for welding thermoplastic resins.
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 dielectric 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つ
た。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つた。また、
インパルスシール法も、ヒートシール法と同様
に、ほ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つた。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、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つ
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
つた。[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. Furthermore, since a long cooling time is required after heating and melting, it has been difficult to increase mass productivity. Also,
Like the heat sealing method, the impulse sealing method is also complicated because it can weld most thermoplastic resins, but it is difficult to weld thick thermoplastic resins, and it is difficult to manufacture heaters with complicated shapes. It was not possible to weld a certain shape. The high-frequency welding method can weld even thick thermoplastic resins, requires a short cooling time, and can also weld complex shapes. 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］ 以上のように従来の溶着方法には、ほとんどの
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
はなかつた。[Problems to be Solved by the Invention] As described above, conventional welding methods are capable of welding most thermoplastic resins even in complex shapes without being affected by wall thickness, and are capable of welding with a short cooling time. There was no one that could satisfy all the conditions of being short.

［問題点を解決するための手段］ 本発明は、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
によつて従来の問題点を解決した。[Means for Solving the Problems] The present invention provides a heat-generating material or ferromagnetic material with a large dielectric loss value between the welding surfaces of thermoplastic resins of the same type or different types with a small dielectric loss value that cannot be normally welded by high frequency. The problems of the prior art 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、
熱可塑性樹脂の溶着面の少なくとも一部に、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つた。[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. By melting and welding the thermoplastic resin around the material,
A ferromagnetic heat-generating material is placed 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 provides a beautiful finished product, leading to the completion of the present invention.

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、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 of molecules of the heat-generating material, and the amount of heat generated P is expressed by the following equation.

Ｐ＝Ｋ・ε・tanδ・ｆ（Ｖ／ｄ）2 ……(1) ここで、Ｋ：比定数、ε：誘電率、tanδ：誘電
損失、ｆ：周波数、Ｖ：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。 P=K・ε・tanδ・f(V/d) 2 ...(1) Here, K: specific constant, ε: permittivity, tanδ: dielectric loss, f: frequency, V: interelectrode voltage, d: This is the distance between the 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、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ユール効果
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, it efficiently generates heat due to hysteresis loss and the Joule effect of overcurrent. The amount of heat generated due to hysteresis loss P 1 is expressed by the following equation.

ここで、Ｉ：コイル電流、ｄ：コイルとの距
離、μ：有効透磁率、ｒ：固有抵抗、ｆ：周波数
である。 Here, I: coil current, d: distance to the coil, μ: effective magnetic permeability, r: specific resistance, and f: frequency.

また、過電流のジユール効果による発熱量P2
は次式で示される。 In addition, the amount of heat generated by the Joule effect of overcurrent is P 2
is expressed by the following equation.

P2＝Ｋ・N2・I2√・・ ……(3) ここで、Ｋ：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)から明らかなよ
うに、ヒステリシス損による発熱量P1に比して
過電流のジユ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。 P 2 = K・N 2・I 2 √・・ ...(3) Here, K: Specific constant, N: Number of turns of coil, ρ:
It is electrical resistivity. As is clear from equations (2) and (3), the amount of heat generated P 2 due to the Joule effect of overcurrent is much larger than the amount of heat generated P 1 due to hysteresis loss. Therefore, the effective permeability μ
The larger the value of , that is, the more ferromagnetic the material, the greater the amount of heat generated, and the thermoplastic resin that is the material to be welded can be sufficiently melted and 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イン系樹脂、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一部
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、強磁性体である鉄、フエライ
ト、ステンレス、アルミニウム等の導体が挙げら
れる。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、フエライト、ステンレスである。 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 these thermoplastic resins that cannot be welded by high frequency are polyvinyl chloride resins, polyamide resins, polyester resins, and ethylene-vinyl acetate copolymers, which have large dielectric loss values. There are also conductors such as ferromagnetic materials such as iron, ferrite, stainless steel, and aluminum. More preferably, polyvinyl chloride resin, polyamide resin, ethylene-vinyl acetate copolymer,
These are iron, ferrite, and stainless steel.

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
くくなつ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、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。 The heat generating material is preferably a resin having 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 becomes smaller, making it difficult to melt the thermoplastic resin, resulting in incomplete welding. When the heat generating material has a higher melting point than the thermoplastic resin which is the material to be welded, the thermoplastic resin can be sufficiently melted before the heat generating material melts and deforms, so 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
樹脂を高周波融着で溶着するのと同時に、溶着が
完全であり奇麗にしあがる。 In the welding method of the present invention, since the welding surface side is melted and welded, the polyvinyl chloride resin is welded by high frequency welding using internal heat generation, and at the same time, the welding is complete and beautiful.

［実施例］ 以下図面に基ずいて、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ツク容器
１を示す。プラスチツク容器１は、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
ヨン成形法によつて得られるチユーブ状シートの
両端開放端を溶着することによつて得たものであ
る。また、押出し成形によつ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
つ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
発明の方法によつて溶着されている。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
シユを設置する。ナイロンメツシユを設置した口
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ユが発熱し、
ナイロンメツシユの周辺の上端部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、ナイロンメツシユの周辺及びナイロ
ンメツシユ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
ンメツシユの周辺及びナイロンメツシユの網目の
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、口元部２と上端
部４の溶着部以外の上端部４の溶着は、通常のヒ
ートシールで行つているが、この上端部４におい
てもナイロンメツシユを狭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. A flexible plastic container 1 is shown in FIG. The plastic container 1 is composed of a mouth portion 2 and a container portion 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 tube-shaped 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 equipped with a nylon mesh is inserted into the upper end portion 4, and is pressed from the outside with a high-frequency mold 8 to oscillate high-frequency waves. The high frequency used is generally 40.6MHz. When high frequency is oscillated in this state, the nylon mesh generates heat,
The linear low-density polyethylene at the upper end 4 around the nylon mesh and the high-density polyethylene at the opening 2 are melted and come into contact with each other and welded at the periphery of the nylon mesh and the opening of the mesh of the nylon mesh. A cross-sectional view of the welded mouth part 2 is shown in the third figure.
Shown in the diagram. The mouth part 2 made of high-density polyethylene and the upper end part 4 made of linear low-density polyethylene are each liquid-tightly welded around the nylon mesh and at the openings of the nylon mesh. In the embodiment shown in FIG. 3, the upper end portion 4 other than the welded portion between the mouth portion 2 and the upper end portion 4 is welded by ordinary heat sealing. Alternatively, 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 band-like structure shown in FIG. 5 or a combination of several linear structures shown in FIG. 6. good. 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。第７図に示したように、発熱材料７とし
て鉄製のメツシユを用い、口元部２の外周面にそ
の鉄製のメツシユを設置する。鉄製のメツシユを
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、鉄製のメツシユが発熱し、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
ユの周辺及び鉄製のメツシユ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つて得
られる。使用される高周波は400kHz〜4MHzのも
のが一般的である。 Next, a welding method using high-frequency induction heating will be described. 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 part 2. When the opening part 2 with the iron mesh installed is inserted into the upper end part 4 and placed in a high frequency magnetic field while applying slight pressure from the outside with the compression jig 9, the iron mesh generates heat and the upper end part 4 around it is inserted. The linear low-density polyethylene of the mouth part 2 and the high-density polyethylene of the opening part 2 are melted and come into contact with each other at the periphery of the iron mesh and the opening of the mesh of the iron mesh, and are welded together. 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 400kHz and 4MHz.

以上のようにして作製したプラスチツク容器に
水を注入し、口元部２の開口部に高密度ポリエチ
レン製フイルム（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
つた。 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 sterilized using high-pressure steam 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、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。 Thermoplastic resins, which have a small dielectric loss value and cannot be welded by high frequency, can be welded using high-frequency dielectric heating or high-frequency induction heating, making it easier to weld complex shapes and thick resins, and shortening the cooling time. It is excellent in mass production because only a few steps are required.

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

第１図は本発明の溶着方法によつて作製したプ
ラスチツ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……プラスチツク容器、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 produced by the welding method of the present invention, FIG. 2 is a cross-sectional view showing the method for welding the mouth part, and FIG. 3 is a longitudinal cross-sectional view of the welded mouth part. 4 to 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 part, 4... Upper end, 5... Lower end, 6... Suspension opening, 7... Heat generating material, 8... High frequency mold, 9...
...Compression jig, 10...Induction coil.

Claims (1)

【特許請求の範囲】 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つて、
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。 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。 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。 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。 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、フエライト、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。[Claims] 1. A method of welding thermoplastic resins of the same type or different types having a small dielectric loss value using high frequency, comprising:
A heat generating material having a large dielectric loss value or a ferromagnetic heat generating material is placed between the welding surfaces of the thermoplastic resin, and the heat generating material is heated by high frequency dielectric heating or high frequency induction heating to weld the thermoplastic resin to the welding surface. A welding method characterized by melting between 2. The welding method according to claim 1, wherein the exothermic material has a melting start temperature substantially higher than that of the thermoplastic resin. 3. The welding method according to claim 1 or 2, wherein the heat generating material has a network structure. 4. The welding method according to claim 1 or 2, wherein the heat generating material is strip-shaped or linear. 5. Claims 1 to 5, 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 of item 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 JPS6250122A (en) 1987-03-04
JPH0511022B2 true 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)

Families Citing this family (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
EP0480053B1 (en) * 1990-03-30 1997-11-05 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

Also Published As

Publication number Publication date
JPS6250122A (en) 1987-03-04

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