JPS63258729A - High-frequency heat sealing method and device - Google Patents

High-frequency heat sealing method and device

Info

Publication number
JPS63258729A
JPS63258729A JP62089918A JP8991887A JPS63258729A JP S63258729 A JPS63258729 A JP S63258729A JP 62089918 A JP62089918 A JP 62089918A JP 8991887 A JP8991887 A JP 8991887A JP S63258729 A JPS63258729 A JP S63258729A
Authority
JP
Japan
Prior art keywords
frequency
sealing
heater
pedestal
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62089918A
Other languages
Japanese (ja)
Inventor
豊 青山
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.)
BURUUMAN II KK
Original Assignee
BURUUMAN II 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 BURUUMAN II KK filed Critical BURUUMAN II KK
Priority to JP62089918A priority Critical patent/JPS63258729A/en
Publication of JPS63258729A publication Critical patent/JPS63258729A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3668—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special induction coils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81453—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being made of flexible slats, flexible fins, flexible bristles or springs, e.g. coiled springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91951—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to time, e.g. temperature-time diagrams
    • 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
    • B29C66/70—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
    • B29C66/735—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 extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • 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
    • B29C66/735—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 extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Package Closures (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、重ね合わせた面の少なくとも一方がポリエチ
レン、ポリ塩化ビニル等の熱可塑性材料で構成される各
種包装材及び成形材をヒートシールする方法及び装置に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for heat sealing various packaging materials and molding materials in which at least one of the overlapping surfaces is made of a thermoplastic material such as polyethylene or polyvinyl chloride. METHODS AND APPARATUS.

〔従来の技術〕及び〔発明が解決しにウドｔル問題点〕
従来この種のシール方法及び装置には、外部加熱式のも
のとしてインパルスシール式等があり、またシール材料
自身を発熱させる方式のものに高周波誘電加熱式、高周
波誘導加熱式等がある。[Prior art] and [Problems that the invention cannot solve]
Conventionally, this type of sealing method and apparatus includes an external heating type such as an impulse seal type, and a high frequency dielectric heating type, a high frequency induction heating type, etc. which generate heat in the sealing material itself.

前記インパルスシール法は第１４図に示す様に通常、発
熱体にニクロムバンド２２を用い、これに瞬間的に電流
を通じて加熱しこの発熱面を、重ね合わせたフィルムに
圧着し一定時間加熱後冷却して圧力を除去するまでの一
連の熱接着操作を連続して行う方法であるが、ミルクカ
ートン高速充填シール機に組み込まれた場合、高い圧着
力と急熱急冷の繰り返しの為ニクロムバンドの疲労が激
しく、寿命が短い、製品歩留まりが悪い、メンテナンス
が大変等の欠点があった。またカートンにアルミニウム
箔がラミネートされた「ロングライフカートン」製品を
製造する場合、カートンの外装面からの加熱だけでは内
層のアルミニウム箔が熱を拡散してシール面に充分に熱
が伝わらない為、シールができず、この場合は高周波シ
ール機の組み込まれた充填装置を別途設備しなければな
らなかった。As shown in FIG. 14, the impulse sealing method usually uses a nichrome band 22 as a heating element, which is instantaneously heated by passing an electric current through it, the heating surface of which is pressed onto a superimposed film, heated for a certain period of time, and then cooled. In this method, a series of thermal bonding operations are performed continuously until the pressure is removed. However, when installed in a milk carton high-speed filling and sealing machine, the high pressure bonding force and repeated rapid heating and cooling may cause fatigue of the nichrome band. It has disadvantages such as short life, poor product yield, and difficult maintenance. In addition, when manufacturing "long life carton" products in which the carton is laminated with aluminum foil, heating only from the exterior surface of the carton will cause the inner layer of aluminum foil to diffuse the heat and the heat will not be sufficiently transferred to the sealing surface. In this case, it was necessary to separately install a filling device with a built-in high-frequency sealing machine.

なお、第１４図中６は加圧台、７はシール材料、１２は
受台、１３はクッション台である。In FIG. 14, 6 is a pressure base, 7 is a sealing material, 12 is a pedestal, and 13 is a cushion base.

一方、高周波誘導加熱式は包装シール関係に広く使用さ
れているが、これは高周波コイルによりシール材料内の
金属層を発熱させるものであるため、アルミニウム箔層
を含むラミネートフィルムの場合には、該層で発熱が充
分に生じ一応満足のいくシール効果が得られるが、紙と
熱可塑性プラスチック材料による包装材料には、その発
熱がないため適用できなかった。On the other hand, high-frequency induction heating is widely used for packaging seals, but since it uses a high-frequency coil to generate heat in the metal layer within the sealing material, it is not suitable for laminated films containing aluminum foil layers. Although sufficient heat is generated in the layer and a satisfactory sealing effect can be obtained, it could not be applied to packaging materials made of paper and thermoplastic materials because they do not generate heat.

また誘導加熱の場合、シール面の両端部や断層部でのう
ず電流の流れ方が高周波コイルの沿いどおりにはならず
、加熱の均一性が得られないため均一で確実なシールが
できないという欠点もあった。Another disadvantage of induction heating is that the eddy current does not flow along the high-frequency coil at both ends of the sealing surface or at the fault, making it impossible to achieve uniform and reliable sealing. There was also.

本発明は、従来のものの上記問題点に着目してなされた
もので、その目的は包装シール材料にアルミニウム箔層
の有る無しに拘らず確実なシールが可能なヒートシール
方法及び装置を提供することにある。The present invention has been made in view of the above-mentioned problems of the conventional methods, and its purpose is to provide a heat sealing method and apparatus that can perform reliable sealing regardless of whether or not the packaging seal material has an aluminum foil layer. It is in.

また、本発明の目的はメンテナンスフリーで生産性が高
く、省エネルギー的で長期間性能上の安定性に優れたヒ
ートシール装置を提供することにある。Another object of the present invention is to provide a heat sealing device that is maintenance-free, highly productive, energy-saving, and has excellent long-term performance stability.

〔問題点を解決するための手段〕[Means for solving problems]

本発明のヒートシール方法は、複数のシール材料を重合
挟圧し、高周波加熱により加熱したのち冷却して熱接着
するに当たり、前記挟圧時に高周波コイルで誘導加熱さ
れるヒータによる外部加熱と、前記高周波コイルによる
前記シール材料自身の誘導発熱に基づく内部加熱とを同
時に行なうことを特徴とする高周波ヒートシール方法で
ある。In the heat sealing method of the present invention, a plurality of sealing materials are polymerized and pressed, heated by high frequency heating, and then cooled and thermally bonded. This is a high frequency heat sealing method characterized in that internal heating based on induction heat generation of the sealing material itself by a coil is simultaneously performed.

また本発明のヒートシール装置は、複数のシール材料を
重合した重合物を加圧台と、この加圧台に対向して配備
された受台との間に配置し、前記重合物を、これら加圧
台と受台により挟圧して、前記シール材料を熱接着する
装置において、前記加圧台、受台のいずれか一方に、高
周波電源に接続された高周波コイルを設けると共に、こ
の筒周ゝ。Further, in the heat sealing device of the present invention, a polymer obtained by polymerizing a plurality of sealing materials is arranged between a pressure table and a pedestal arranged opposite to the pressure table, and the polymer is In an apparatus for thermally bonding the sealing material by applying pressure between a pressure table and a pedestal, a high-frequency coil connected to a high-frequency power source is provided on either the pressure table or the pedestal, and the cylindrical circumference is .

波コイルにより誘導加熱されるようにヒータを適所に配
備したことを特徴とする高周波ヒートソール装置である
。This is a high frequency heat sole device characterized by having heaters placed at appropriate locations so as to be heated by induction using a wave coil.

すなわち本発明は、一つのシール装置に高周波誘導加熱
シール機能（シール材料自身が発熱することによる内部
加熱シール機能）と、高周波誘導加熱で発熱するヒータ
による外部加熱シール機能とを兼ね備えたことを特徴と
し、シール面への熱の供給が、アルミニウム箔層のない
シール材料の場合には両性装面から、またアルミニウム
箔層のあるシール材料の場合には両性装面および内層（
アルミニウム箔層）から行うことができるという効果が
あり、更に本発明はニクロムヒータやクッションゴムの
様な短期消耗品を使用しなくて済むという利点や、高周
波誘導加熱シールにおける発熱の不均一を外装面からの
熱で補償できるという利点があり、新しい包装シール技
術としての高周波誘導加熱シール機を提供することがで
きるものである。In other words, the present invention is characterized in that a single sealing device has both a high-frequency induction heating sealing function (an internal heating sealing function due to the sealing material itself generating heat) and an external heating sealing function using a heater that generates heat through high-frequency induction heating. The heat supply to the sealing surface is from the ampholytic surface in the case of a sealing material without an aluminum foil layer, or from the ampholytic surface and the inner layer (in the case of a sealing material with an aluminum foil layer).
In addition, the present invention has the advantage of not requiring the use of short-term consumables such as nichrome heaters and cushion rubber, and eliminates uneven heat generation in high-frequency induction heating seals. It has the advantage of being able to compensate with heat from the surface, and can provide a high-frequency induction heating sealing machine as a new packaging sealing technology.

〔実施例〕〔Example〕

本発明の実施例を第１図乃至第７図を参照しつつ説明す
ると、ヒートシール装置は、高周波電源（高周波発生器
）１に接続された高周波コイル２及びこの高周波コイル
により誘導加熱されるように配備されたヒータ４を備え
た加圧台６と、コイルバネ８を有する冷却器９１を台枠
９□に固定してなる受台Ｉ２とを互いに対向配備して構
成されている。An embodiment of the present invention will be described with reference to FIGS. 1 to 7. The heat sealing device includes a high-frequency coil 2 connected to a high-frequency power source (high-frequency generator) 1, and a high-frequency coil 2 that is inductively heated by the high-frequency coil. It is constructed by arranging a pressurizing table 6 equipped with a heater 4 and a cradle I2 formed by fixing a cooler 91 having a coil spring 8 to a frame 9□ facing each other.

前記ヒータ４は断面コ字状で誘導加熱が生じ得る任意の
金属材料によりなるものであり、加圧台６の中央下方部
を構成する絶縁層５．の下端部に形成された凹溝に固着
され、その両脚部の先端部が受台１２に向いている。そ
して、このヒータの内側に断面コ字状の絶縁層５□が形
成され、さらに、この絶縁層の内側に断面長方形の前記
高周波コイル２が固着配備されている。この高周波コイ
ルの外周面の一部は外部に露出し、その中心部、すなわ
ち前記管体の内部は冷却水の通水路３となっている。The heater 4 has a U-shaped cross section and is made of any metal material that can cause induction heating, and is made of an insulating layer 5 that forms the lower central portion of the pressurizing table 6. It is fixed in a groove formed at the lower end of the holder 12, with the tips of both legs facing the pedestal 12. An insulating layer 5□ having a U-shaped cross section is formed inside this heater, and the high frequency coil 2 having a rectangular cross section is fixedly disposed inside this insulating layer. A part of the outer circumferential surface of this high-frequency coil is exposed to the outside, and the center thereof, that is, the inside of the tube body, serves as a cooling water passage 3.

一方、前記冷却器９Ｉでは、その上端部に凹溝が、また
、この凹溝より下方部位に冷却水の通水孔１）がそれぞ
れ形成され、前記凹溝には断面楕円形のコイルバネ８が
金属製のビン１ｏにより固定配備され、このコイルバネ
の外周面の一部は自由状態において加圧台６と対向する
側に突出している。On the other hand, in the cooler 9I, a groove is formed at the upper end thereof, and a cooling water passage hole 1) is formed below the groove, and a coil spring 8 having an oval cross section is installed in the groove. It is fixedly arranged by a metal pin 1o, and a part of the outer circumferential surface of this coil spring protrudes toward the side facing the pressurizing table 6 in a free state.

しかして、前記ヒータ４を強磁性金属材質のものとする
と高周波コイル２で発性する磁力線が収束されヒータ自
身がより効率良く発熱すると共に、シール幅ｄに対向す
るシール材料７中のアルミ箔及び前記コイルバネ８をも
効率良く発熱させることができる。このヒータの形状や
配置の例としては、第１３図（Ａ）、　（Ｂ）、　（Ｃ
）などを挙げることができ（第１図は第１３図（Ａ）に
該当する）、シール材料７の種類や形状等に適応した加
熱を行うことができるが、上記（Ａ）乃至（Ｃ）のうち
エネルギーの消費効果が最も高いのは、図中点線で示す
磁力線分布から明らかなように、（Ａ）である。If the heater 4 is made of a ferromagnetic metal material, the lines of magnetic force generated by the high-frequency coil 2 are converged, and the heater itself generates heat more efficiently. The coil spring 8 can also be made to generate heat efficiently. Examples of the shape and arrangement of this heater are shown in Figures 13 (A), (B), (C
), etc. (Fig. 1 corresponds to Fig. 13 (A)), and heating can be performed in accordance with the type and shape of the sealing material 7, but the above (A) to (C) Among them, the one with the highest energy consumption effect is (A), as is clear from the magnetic field line distribution shown by the dotted line in the figure.

ヒータ４の板厚ａは、使用する高周波電流の周波数によ
って決まる誘導電流の浸透深さ以上の厚みが必要であり
、これが薄い程エネルギーが少なくてすむが、ヒータ材
料の加工性及び組立て上の理由により０．１　ｗ以上と
するのが望ましい。The plate thickness a of the heater 4 needs to be at least the penetration depth of the induced current, which is determined by the frequency of the high-frequency current used, and the thinner it is, the less energy is required, but this is due to the workability of the heater material and assembly reasons. Therefore, it is desirable to set it to 0.1 W or more.

前記絶縁層５１．５□は電気絶縁性に富み、熱伝導性の
良い、かつ耐熱性に優れた材料、例えば市販の「デブコ
ン」等を使用したものであるが、これらの絶縁層を包囲
して加圧台６を構成する材料も、電気絶縁性、耐熱性に
富む材料、例えばセラミックス等を適用することが好ま
しい。The insulating layer 51.5□ is made of a material that is rich in electrical insulation, has good thermal conductivity, and has excellent heat resistance, such as commercially available "Devcon". The material constituting the pressurizing table 6 is also preferably a material with high electrical insulation and heat resistance, such as ceramics.

前記コイルバネ８の形状は、シール幅ｄやその他の要因
により真円形に至るまでのいろいろな楕円形状に形成さ
れて使用される。コイル径ｅ、ｆ及び線径ｇについても
同様である。また、コイルバネ８の材質については一般
のバネ鋼材で良いが、前述の通り強磁性材のものほど発
熱効果が高いので好ましい。なお、このコイルバネのシ
ール面に当たる側はテフロンコート等によりシール外装
面（シールする面と反対側の面）からの剥離性を高める
ことができる。The coil spring 8 may be formed into various elliptical shapes up to a perfect circle depending on the seal width d and other factors. The same applies to the coil diameters e and f and the wire diameter g. Further, the material of the coil spring 8 may be a general spring steel material, but as mentioned above, a ferromagnetic material is preferable because it has a higher heat generation effect. Note that the side of the coil spring that contacts the sealing surface can be coated with Teflon or the like to improve releasability from the seal exterior surface (the surface opposite to the surface to be sealed).

本発明装置に使用される高周波電流の周波数は、前記ヒ
ータの板厚ａの最小寸法０．１龍に対応すると同時に、
シール材料７にラミネートされるアルミニウム箔（一般
的板厚７〜１５μｍ）に対し適量の磁力線を透過させコ
イルバネ８に作用して発熱を起こさせ得るものであるこ
とが望ましく、その範囲は約０．１＝　０．５ＭＨｚで
ある。この周波数はシール材料にアルミ箔のない場合に
も適応できる。The frequency of the high-frequency current used in the device of the present invention corresponds to the minimum dimension of the plate thickness a of the heater of 0.1 mm, and at the same time,
It is desirable that the aluminum foil laminated to the sealing material 7 (typically 7 to 15 μm in thickness) be capable of transmitting an appropriate amount of magnetic lines of force and acting on the coil spring 8 to generate heat, and the range is approximately 0.5 μm. 1=0.5MHz. This frequency can also be applied when the sealing material does not include aluminum foil.

次に、この実施例装置の作用について説明すると、第１
図のように加圧台６を降下させ、複数枚のシール材料７
をこの加圧台と受台１２のコイルバネ８とで挟圧し、こ
の挟圧の間に高周波電源１を作動させてヒータ４及びコ
イルバネ８を発熱させ、各シール材料７をその外面側（
シール材料同士が接触している面と反対側の面）から加
熱すると同時に、同じく誘導加熱によりシール材料７内
のアルミニウム箔層自身を発熱させて、シール材料７同
士の接触面を溶融し、次いで前記挟圧状態のまま、加圧
台６の通水路３及び受台１２の通水孔１）に流過する冷
却水により高周波コイル２、絶縁層５ｔ１ヒータ４及び
コイルバネ８を冷却し、各シール材料７の外面側から、
これを伝導伝熱により迅速に冷却したのち、加圧台６を
上昇・離反させて１サイクルの熱接着工程が終了し、か
くてシール材料７は幅ｄに亘ってヒートシールが行われ
る。Next, to explain the operation of this embodiment device, the first
Lower the pressure table 6 as shown in the figure, and remove multiple sheets of sealing material 7.
is clamped between this pressure base and the coil spring 8 of the pedestal 12, and during this clamping, the high frequency power supply 1 is operated to generate heat in the heater 4 and the coil spring 8, and each sealing material 7 is pressed against its outer surface (
At the same time, the aluminum foil layer itself in the sealing material 7 is heated by induction heating to melt the contacting surfaces of the sealing materials 7, and then In the pinched state, the high frequency coil 2, the insulating layer 5t1, the heater 4, and the coil spring 8 are cooled by the cooling water flowing through the water passage 3 of the pressure table 6 and the water passage hole 1 of the pedestal 12, and each seal is sealed. From the outer surface of material 7,
After this is quickly cooled by conductive heat transfer, the pressurizing table 6 is raised and separated to complete one cycle of the thermal bonding process, and thus the sealing material 7 is heat-sealed over the width d.

なお、この実施例とは反対に前記受台１２を上下動させ
るか、又はその両方を開閉挟圧するようにしてもよいこ
とは勿論である。Note that, contrary to this embodiment, it is of course possible to move the pedestal 12 up and down, or to open and close both of them.

上記工程において、前記コイルバネ８は第４図及び第５
図に示すように、シール材料７の形状に応じて第３図の
自由状態に比べて少し扁平に変形し、シール材料７に対
する押圧力の付与と、シール材料の加熱・冷却の作用を
行うものである。したがって、上記コイルバネを設けた
ことによって、段差のあるシール面をより確実にシール
できる効果がある。In the above process, the coil spring 8 is
As shown in the figure, it deforms into a slightly flatter shape compared to the free state in Figure 3 depending on the shape of the sealing material 7, and applies a pressing force to the sealing material 7 and acts to heat and cool the sealing material. It is. Therefore, by providing the coil spring, there is an effect that the sealing surface having a step can be sealed more reliably.

また、上記工程において、熱接着のサイクルタイムとシ
ール材料７の外面温度（ここで、外面とはヒートシール
する面と反対側の面を意味する）と、内面温度（ここで
、内面とはヒートシール面を意味する）は第７図に示す
とおりとなり、優れたｗ熱・冷却効果が得られることが
わかる。In addition, in the above process, the thermal bonding cycle time, the outer surface temperature of the sealing material 7 (here, the outer surface means the surface opposite to the surface to be heat sealed), and the inner surface temperature (here, the inner surface means the surface opposite to the surface to be heat sealed), (meaning the sealing surface) is as shown in FIG. 7, and it can be seen that excellent heating and cooling effects can be obtained.

ここで第１図例装置を使用して行った、第６図に示すア
ルミ箔層の無いミルクカートンの胴部液中シールの実験
条件及び結果を示すと、以下のとおりである。Here, the experimental conditions and results of submerged sealing of the body of a milk carton without an aluminum foil layer shown in FIG. 6, which were conducted using the apparatus shown in FIG. 1, are as follows.

＋１）　　シール材料カートンの厚みは「ポリエチレン
十紙」で合計約２５０μｍ、第６図のシール長さｈは１
０４ｍｍ、重ね幅ｉは９ｆｉ （２）高周波コイル２のコイル幅Ｃは３ｆｉ、ヒータ４
の板厚ａは０．２１、絶縁層５．の厚みｂは平均で約０
．１５鶴 （３）　　コイルバネ８のコイル径ｅ及びｒは６×５ｆ
ｉ、線径ｇは０．４鶴 （４）冷却水の供給温度は１０℃で、通水路３の水量は
１．２１　／ｌ１ｉｎ　、通水孔１）の水量はＱ、３１
７ｓｉｎ（５）加圧力は６００　ｋｇ、高周波コイル通
電電流は２５０ｋＨｚで約８００Ａ （６）　　サイクルタイムは加熱時間が０．４秒、冷却
時間が０．２秒で合計０．６秒、加圧開放時間０．４秒
とし、１サイクル１秒での繰り返し運転テストを実施し
た。+1) The thickness of the sealing material carton is "polyethylene ten paper" and the total thickness is approximately 250 μm, and the seal length h in Figure 6 is 1
04mm, overlap width i is 9fi (2) Coil width C of high frequency coil 2 is 3fi, heater 4
The plate thickness a is 0.21, and the insulating layer 5. The average thickness b is about 0
．． 15 Crane (3) Coil diameter e and r of coil spring 8 are 6 x 5f
i, the wire diameter g is 0.4 Tsuru (4) The cooling water supply temperature is 10℃, the water volume of water passage 3 is 1.21/l1in, the water volume of water passage hole 1) is Q, 31
7sin (5) Pressure force is 600 kg, high frequency coil current is approximately 800 A at 250 kHz (6) Cycle time is heating time 0.4 seconds, cooling time 0.2 seconds, total 0.6 seconds, pressure release A repeated driving test was conducted with a time of 0.4 seconds and one cycle of 1 second.

この実験では第４図及び第５図から明らかなように特に
カートンの中央部で重なり合った部分でのコイルバネ８
とカートンの沈み込み具合がシールの確実性を明確に表
しており、市販されている従来のインパルスシール法に
よるシール製品と同等の結果を得ることができた。In this experiment, as is clear from Figures 4 and 5, the coil springs 8
The degree of sinking of the carton clearly indicates the reliability of the seal, and we were able to obtain results equivalent to seal products made using the conventional impulse seal method on the market.

また、アルミニウム箔がラミネートされたミルクカート
ンについて上記条件のうち高周波コイル通電電流を上記
の約１７３にして同様のヒートシール実験を行ったとこ
ろ、市販されている従来の高周波シール法による製品シ
ールと同等の結果を得ることができた。In addition, when we conducted a similar heat-sealing experiment on a milk carton laminated with aluminum foil under the above conditions with the high-frequency coil energizing current set to about 173, we found that it was equivalent to the product seal made by the conventional high-frequency sealing method on the market. I was able to obtain the following results.

次に、第８図は本発明の別の実施例を示すもので、この
例では受台１２は、台枠１２Ｉに伸縮性に冨むゴム系成
形物からなるクッション台１３を嵌合して構成されてお
り、このクッション台と加圧台６によりシール材料を挟
圧するようにしである。Next, FIG. 8 shows another embodiment of the present invention. In this example, the pedestal 12 is constructed by fitting a cushion pedestal 13 made of a highly elastic rubber-based molded product into a pedestal frame 12I. The cushion table and the pressure table 6 are used to press the sealing material.

また、第９図に示す更に別の実施例は、ミルクカートン
のボトムシール用に好適なものであって、この例では加
圧台６に前記第１図例の受台１２におけるものと同様の
コイルバネ８、これを固定するだめのピン１０、及び通
水孔１）と同一の作用をする冷却水管１）□が配備され
ており、ヒートシールするべき部分はコイルバネ８と受
台１２により挟圧され、高周波コイル２によるコイルバ
ネ８の発熱により加熱され、冷却水管１）１に流過する
冷却水により冷却されるものである。Further, another embodiment shown in FIG. 9 is suitable for the bottom seal of a milk carton, and in this embodiment, the pressurizing table 6 is provided with a pressure plate 6 similar to that in the pedestal 12 of the example in FIG. A coil spring 8, a pin 10 for fixing it, and a cooling water pipe 1) which has the same function as the water passage hole 1) are provided, and the area to be heat-sealed is compressed by the coil spring 8 and the pedestal 12. It is heated by the heat generated by the coil spring 8 by the high frequency coil 2, and is cooled by the cooling water flowing through the cooling water pipe 1).

なお、高周波コイル２内部の通水路は該コイルを冷却し
てその耐久性を高めるためのものである。Note that the water passage inside the high-frequency coil 2 is for cooling the coil and increasing its durability.

さらに第１０図及び第１）図に示す実施例は、アルミ箔
及び紙入りラミネートチューブのチューブ２０の先端に
プラスチック成形によるヘッド２１の肩部をシールする
のに好適なものである。Further, the embodiment shown in FIGS. 10 and 1) is suitable for sealing the shoulder of the head 21 formed by plastic molding onto the tip of the tube 20, which is a laminate tube filled with aluminum foil and paper.

この実施例では、装置カバー１７内に、高周波コイル１
火源体２．を巻き付けた加圧台６と、冷却水管１）．を
巻き付けた冷却器１５を配備し、この間に上方から下方
に順に絶縁シート１６、高周波コイル２火源体２：、絶
縁層５及び強磁性金属からなるヒータ４が配設され、前
記高周波コイル１火源体２１内には冷却水が流過するよ
うに構成されている。In this embodiment, a high frequency coil 1 is installed inside the device cover 17.
Fire source 2. The pressurizing table 6 wrapped around the cooling water pipe 1). A cooler 15 is provided, in which an insulating sheet 16, a high-frequency coil 2, an insulating layer 5, and a heater 4 made of a ferromagnetic metal are arranged in order from above to below. The fire source body 21 is configured to allow cooling water to flow therethrough.

一方、受台１２は円錐状のヘッドホルダ１９と円柱状の
金属マンドレル１８により構成され、前記ラミネートチ
ューブは第１０図に示すＢ様でシールされる。On the other hand, the pedestal 12 is composed of a conical head holder 19 and a cylindrical metal mandrel 18, and the laminate tube is sealed in the shape B shown in FIG.

しかして、高周波誘導加熱によるうず電流の流れかたは
第１２図の矢印の様に断層部で弧を描いてＵターンする
ものであるため、全周をシールに必要な均一温度にする
ことは容易でない。この為、従来の高周波シール装置で
は断層部付近はどうしてもシールがあまいという欠陥が
あったが、この実施例では第１）図で見るとおり、ヒー
タ４は強磁性金属なので高周波コイルで発生するほとん
どの磁力線を効率良く集束し断層部におけろうず電流の
Ｕターン現象を断層部の両端末コーナ一部に引込んでそ
の発熱を促し、且つヒータ４による外部加熱で補償され
るのでシール面は全周が均一に加熱される。However, since the flow of eddy current caused by high-frequency induction heating draws an arc and makes a U-turn at the fault, as shown by the arrow in Figure 12, it is not easy to maintain the uniform temperature required for sealing all around the circumference. . For this reason, conventional high-frequency sealing devices had the defect that the seal was inevitably vague near the fault, but in this embodiment, as shown in Figure 1), the heater 4 is made of ferromagnetic metal, so most of the sealing that occurs in the high-frequency coil is The lines of magnetic force are efficiently focused and the U-turn phenomenon of the wax current at the fault is drawn into a part of both end corners of the fault, promoting heat generation.Also, since it is compensated for by external heating by the heater 4, the sealing surface is covered all around the circumference. is heated evenly.

ところで上記ラミネートチューブに係る従来の工法は、
（１）ヘッド成形時にチューブを供給して同時成形する
方法と、（２）予めリング状のアルミラミネートフィル
ムを成形ヘッドの表面に接合しておき、前記高周波誘導
加熱方式でシールする方法の２通りがあり＋１）は生産
能力が低く、（２）は製造工程が増え且つ資材費が増す
という欠点があったが、上記装置により工程や資材を何
ら変える事なく生産量を３倍に上げることができた。By the way, the conventional construction method for the above laminated tube is
There are two methods: (1) a method in which a tube is supplied during head molding and molding is carried out simultaneously, and (2) a method in which a ring-shaped aluminum laminate film is bonded to the surface of the molding head in advance and sealed using the high-frequency induction heating method. +1) had the disadvantage of low production capacity, and (2) had the disadvantage of increasing the number of manufacturing processes and material costs, but with the above equipment it was possible to triple the production volume without changing the process or materials. did it.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明は、高周波コイルによる高周波
誘導加熱シール（内部加熱シール）機能と、この高周波
コイルで誘導加熱されるヒータによる外部加熱シール機
能を兼ね備えたものであり、シール材料にアルミニウム
箔層のあるなしに拘らずシールが可能であり、しかも確
実で品質の高いシール効果が得られ、メンテナンスフリ
ーで生産性が高く、省エネルギー的で経済性にも富むな
ど、多大の利点をもたらすものである。As described above, the present invention has both the high-frequency induction heating sealing (internal heating sealing) function using a high-frequency coil and the external heating sealing function using a heater that is inductively heated by this high-frequency coil, and uses aluminum foil as the sealing material. It is possible to seal with or without a layer, provides a reliable and high-quality sealing effect, is maintenance-free, has high productivity, is energy-saving, and is highly economical. be.

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

第１図乃至第７図は本発明の実施例に係るもので、第１
図は一部を断面で示したヒートシール装置の斜視図、第
２図は加圧台の縦断面図、第３図は受台の縦断面図、第
４図はヒートシール装置の作用説明図、第５図は第４図
の横断面図、第６図はシール前におけるミルクカートン
の横断面図、第７図はミルクカートンシール時のサイク
ルタイムとカートン温度との関係を示すグラフである。 第８図、第９図はそれぞれ別の実施例の縦断面図である
。第１０図乃至第１２図は更に別の実施例に係るもので
、第１０図はヒートシール装置の縦断面図、第１）図は
第１０図イ部の拡大図、第１２図はラミネートチューブ
のチューブとヘッドの斜視図である。第１３図（Ａ）　
、　（Ｂ）　、　（Ｃ）はいずれも高周波コイル及びヒ
ータの、形状と配置の例を示す加圧台下部の縦断面図、
第１４図は従来のインパルスシーラの縦断面図である。 １・・・高周波電源、２・・・高周波コイル、２Ｉ・・
・高周波コイル１火源体、２□・・・高周波コイル２火
源体、３・・・通水路、４・・・ヒータ、５，５．．５
□・・・絶縁層、６・・・加圧台、７・・・シール材料
、８・・・コイルバネ、９、・・・冷却器、９ｆ、１２
．・・・台枠、１０・・・ピン、１）・・・通水孔、１
）＋　・・・冷却水管、１２・・・受台、１３・・・ク
ッション台、１５・・・冷却器、１６・・・絶縁シート
、１７・・・装置カバー、１８・・・金属マンドレル、
１９・・・ヘッドホルダ、２０・・・チューブ、２１・
・・ヘッド、２２・・・ニクロムバンド、ａ・・・板厚
、ｂ・・・厚み、Ｃ・・・コイル幅、ｄ・・・シール幅
、ｅ、ｆ・・・コイル径、ｇ・・・線径、ｈ・・・シー
ル長さ、ｉ・・・重ね幅。1 to 7 are related to embodiments of the present invention, and the first
The figure is a perspective view of the heat sealing device partially shown in cross section, FIG. 2 is a vertical cross-sectional view of the pressure table, FIG. 3 is a vertical cross-sectional view of the pedestal, and FIG. , FIG. 5 is a cross-sectional view of FIG. 4, FIG. 6 is a cross-sectional view of the milk carton before sealing, and FIG. 7 is a graph showing the relationship between cycle time and carton temperature during milk carton sealing. FIGS. 8 and 9 are longitudinal sectional views of different embodiments, respectively. Figures 10 to 12 relate to yet another embodiment, in which Figure 10 is a longitudinal sectional view of the heat sealing device, Figure 1) is an enlarged view of part A in Figure 10, and Figure 12 is a laminate tube. FIG. 2 is a perspective view of the tube and head of. Figure 13 (A)
, (B) and (C) are vertical cross-sectional views of the lower part of the pressure table showing examples of the shape and arrangement of the high-frequency coil and heater,
FIG. 14 is a longitudinal sectional view of a conventional impulse sealer. 1...High frequency power supply, 2...High frequency coil, 2I...
- High frequency coil 1 fire source body, 2□... High frequency coil 2 fire source body, 3... Water passage, 4... Heater, 5, 5. ．． 5
□... Insulating layer, 6... Pressure table, 7... Seal material, 8... Coil spring, 9... Cooler, 9f, 12
．． ...Underframe, 10...Pin, 1)...Water hole, 1
)+...Cooling water pipe, 12...Base, 13...Cushion stand, 15...Cooler, 16...Insulating sheet, 17...Device cover, 18...Metal mandrel,
19...Head holder, 20...Tube, 21.
... Head, 22... Nichrome band, a... Plate thickness, b... Thickness, C... Coil width, d... Seal width, e, f... Coil diameter, g...・Wire diameter, h...Seal length, i...Overlap width.

Claims (8)

【特許請求の範囲】[Claims] （１）複数のシール材料を重合挟圧し、高周波加熱によ
り加熱したのち冷却して熱接着するに当たり、前記挟圧
時に高周波コイルで誘導加熱されるヒータによる外部加
熱と、前記高周波コイルによる前記シール材料自身の誘
導発熱に基づく内部加熱とを同時に行なうことを特徴と
する高周波ヒートシール方法。(1) When a plurality of sealing materials are polymerized and pressed, heated by high-frequency heating, and then cooled and thermally bonded, external heating is performed by a heater that is inductively heated by a high-frequency coil during the pressing, and the sealing material is heated by the high-frequency coil. A high-frequency heat sealing method characterized by simultaneously performing internal heating based on its own induction heat generation. （２）前記冷却処理を、前記挟圧状態のまま前記加圧台
及び／又は受台に設けた冷却器により前記シール材料を
伝導伝熱により冷却して行う特許請求の範囲第１項記載
の方法。(2) The cooling treatment is performed by cooling the sealing material by conductive heat transfer using a cooler provided on the pressurizing table and/or the pedestal while maintaining the compressed state. Method. （３）複数のシール材料を重合した重合物を加圧台と、
この加圧台に対向して配備された受台との間に配置し、
前記重合物を、これら加圧台と受台により挟圧して、熱
接着する装置において、前記加圧台、受台のいずれか一
方に、高周波電源に接続された高周波コイルを設けると
共に、この高周波コイルにより誘導加熱されるように適
所にヒータを配備したことを特徴とする高周波ヒートシ
ール装置。(3) A pressure table and a polymer made by polymerizing multiple sealing materials,
Placed between this pressure table and a pedestal placed opposite to it,
In an apparatus for thermally bonding the polymer by pressing the polymer between a pressure table and a pedestal, a high-frequency coil connected to a high-frequency power source is provided on either the pressure table or the pedestal, and the high-frequency coil is connected to a high-frequency power supply. A high-frequency heat sealing device characterized by having a heater placed at an appropriate location so that induction heating is performed by a coil. （４）前記加圧台及び／又は受台の適所に冷却媒体の流
路を設けて冷却器を構成し、前記挟圧時に前記ヒータ及
び／又はシール材料を冷却可能とした特許請求の範囲第
３項記載の装置。(4) A cooler is constructed by providing a cooling medium flow path at an appropriate location in the pressure table and/or the pedestal, and the heater and/or the sealing material can be cooled during the pressurization. The device according to item 3. （５）前記高周波コイルの外周面の少なくとも一部が電
気絶縁性材料により包囲されていると共に、該電気絶縁
性材料の外周面の少なくとも一部が前記ヒータにより包
囲されているものである特許請求の範囲第３項又は第４
項記載の装置。(5) At least a portion of the outer peripheral surface of the high-frequency coil is surrounded by an electrically insulating material, and at least a portion of the outer peripheral surface of the electrically insulating material is surrounded by the heater. Range 3 or 4
Apparatus described in section. （６）前記高周波コイルが断面略長方形に、前記ヒータ
が断面コ字状又はニ字状にそれぞれ形成されていると共
に、該ヒータの各脚部の先端部が前記重合物のヒートシ
ール時に前記受台に向くように配備されているものであ
る特許請求の範囲第５項記載の装置。(6) The high frequency coil is formed to have a substantially rectangular cross section, and the heater is formed to have a U-shape or a K-shape in cross section, and the tip of each leg of the heater is formed into the receiver during heat sealing of the polymer. 6. The device according to claim 5, wherein the device is arranged so as to face a table. （７）前記高周波コイル及びヒータが前記加圧台に設け
られていると共に、前記受台が金属材料からなるコイル
バネを、前記加圧台と対向する側にその外周面の一部を
突出して配備されているものである特許請求の範囲第３
〜６項のいずれか一つの項記載の装置。(7) The high-frequency coil and the heater are provided on the pressure table, and the pedestal is provided with a coil spring made of a metal material with a part of its outer peripheral surface protruding on the side facing the pressure table. Claim 3 which is
6. The device according to any one of items 6 to 6. （８）前記受台が、前記コイルバネ近傍の適所に冷却媒
体の流路を備えているものである特許請求の範囲第７項
記載の装置。(8) The device according to claim 7, wherein the pedestal is provided with a cooling medium flow path at a suitable location near the coil spring.
JP62089918A 1987-04-14 1987-04-14 High-frequency heat sealing method and device Pending JPS63258729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62089918A JPS63258729A (en) 1987-04-14 1987-04-14 High-frequency heat sealing method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62089918A JPS63258729A (en) 1987-04-14 1987-04-14 High-frequency heat sealing method and device

Publications (1)

Publication Number Publication Date
JPS63258729A true JPS63258729A (en) 1988-10-26

Family

ID=13984085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62089918A Pending JPS63258729A (en) 1987-04-14 1987-04-14 High-frequency heat sealing method and device

Country Status (1)

Country Link
JP (1) JPS63258729A (en)

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US11548238B2 (en) 2018-09-10 2023-01-10 Tetra Laval Holdings & Finance S.A. Method for forming a tube and a method and a packaging machine for forming a package
US11554555B2 (en) 2017-05-30 2023-01-17 Tetra Laval Holdings & Finance S.A. Apparatus for sealing the top of a package for a food product and system for forming and filling a food package
US11820540B2 (en) 2018-09-11 2023-11-21 Tetra Laval Holdings & Finance S.A. Packaging apparatus for forming sealed packages
US12122547B2 (en) 2019-02-05 2024-10-22 Tetra Laval Holdings & Finance S.A. Induction heat sealing device and a method for transversally seal a tube of packaging material

Cited By (16)

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JP2007099339A (en) * 2005-10-04 2007-04-19 Toyo Seikan Kaisha Ltd Method and apparatus for heat-sealing container
WO2008129679A1 (en) * 2007-04-11 2008-10-30 Toyo Seikan Kaisha, Ltd. Method and apparatus for heat-sealing container
JP5200266B2 (en) * 2007-04-11 2013-06-05 東洋製罐株式会社 Container heat sealing method and apparatus
JP2017513738A (en) * 2014-04-16 2017-06-01 テトラ ラバル ホールディングス アンド ファイナンス エス エイ Induction sealing device and packaging material sealing method using induction sealing device
US10358243B2 (en) 2014-04-16 2019-07-23 Tetra Laval Holdings & Finance S.A. Induction sealing device and method of sealing a packaging material using said induction sealing device
US10350832B2 (en) 2014-11-24 2019-07-16 Tetra Laval Holdings & Finance S.A. Simplified transversal induction sealing device
US10994495B2 (en) 2015-11-27 2021-05-04 Tetra Laval Holdings & Finance S.A. Sealing device with increased robustness
US11534985B2 (en) 2016-05-02 2022-12-27 Tetra Laval Holdings & Finance S.A. Induction sealing system
IT201700046654A1 (en) * 2017-04-28 2018-10-28 Cavanna S P A Con Socio Unico SEALING BAR
WO2018198031A1 (en) * 2017-04-28 2018-11-01 Cavanna S.P.A. Welding bar
US11554555B2 (en) 2017-05-30 2023-01-17 Tetra Laval Holdings & Finance S.A. Apparatus for sealing the top of a package for a food product and system for forming and filling a food package
US10899082B2 (en) 2017-07-17 2021-01-26 Tetra Laval Holdings & Finance S.A. Inductor coil for induction welding of a packaging material
US11370571B2 (en) 2017-07-18 2022-06-28 Tetra Laval Holdings & Finance S.A. Induction sealing device
US11548238B2 (en) 2018-09-10 2023-01-10 Tetra Laval Holdings & Finance S.A. Method for forming a tube and a method and a packaging machine for forming a package
US11820540B2 (en) 2018-09-11 2023-11-21 Tetra Laval Holdings & Finance S.A. Packaging apparatus for forming sealed packages
US12122547B2 (en) 2019-02-05 2024-10-22 Tetra Laval Holdings & Finance S.A. Induction heat sealing device and a method for transversally seal a tube of packaging material

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