JP4983662B2 - 樹脂フィルムの生産方法 - Google Patents

樹脂フィルムの生産方法 Download PDF

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Publication number
JP4983662B2
JP4983662B2 JP2008066773A JP2008066773A JP4983662B2 JP 4983662 B2 JP4983662 B2 JP 4983662B2 JP 2008066773 A JP2008066773 A JP 2008066773A JP 2008066773 A JP2008066773 A JP 2008066773A JP 4983662 B2 JP4983662 B2 JP 4983662B2
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JP
Japan
Prior art keywords
film
metal thin
thin film
resin
thermoplastic resin
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 - Fee Related
Application number
JP2008066773A
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English (en)
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JP2009220367A (ja
Inventor
秀和 吉岡
大介 葛山
康司 下元
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.)
Omron Corp
Original Assignee
Omron Corp
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Publication date
Application filed by Omron Corp filed Critical Omron Corp
Priority to JP2008066773A priority Critical patent/JP4983662B2/ja
Priority to PCT/JP2009/053698 priority patent/WO2009113411A1/ja
Publication of JP2009220367A publication Critical patent/JP2009220367A/ja
Application granted granted Critical
Publication of JP4983662B2 publication Critical patent/JP4983662B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B23K26/324—Bonding taking account of the properties of the material involved involving non-metallic parts
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • 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"
    • B29C65/3404—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" characterised by the type of heated elements which remain in the joint
    • B29C65/346—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" characterised by the type of heated elements which remain in the joint being a coating or being printed, e.g. being applied as a paint or forming a printed circuit
    • 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"
    • B29C65/3468—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" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of 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"
    • B29C65/3472—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" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—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" characterised by the composition of the heated elements 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
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • 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
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • B29C66/304—Joining through openings in an intermediate part of the article
    • 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
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—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
    • 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
    • B29C66/70—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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to 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
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
    • 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
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    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/009—Using laser
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating
    • 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
    • B29C2795/00—Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002—Printing on articles made from plastics or substances in a plastic state before shaping
    • 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
    • B29C65/82—Testing the joint
    • B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
    • 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
    • B29C66/3034—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes
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    • 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
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    • 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
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    • 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
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    • B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
    • 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
    • B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
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    • B29K2995/0027—Transparent for light outside the visible spectrum
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3425—Printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/01—Dielectrics
    • H05K2201/0104—Properties and characteristics in general
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    • H05K2201/03—Conductive materials
    • H05K2201/0302—Properties and characteristics in general
    • H05K2201/0317—Thin film conductor layer; Thin film passive component
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    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
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    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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    • H05K2203/06—Lamination
    • H05K2203/065—Binding insulating layers without adhesive, e.g. by local heating or welding, before lamination of the whole PCB
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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    • H05K2203/107—Using laser light

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Description

本発明は、上樹脂フィルムと下樹脂フィルムとを溶着する樹脂フィルムの生産方法に関する。
上樹脂フィルムと下樹脂フィルムとの間に液体からなる光吸収物質を挟み込み、レーザを照射し、このレーザを吸収した光吸収物質からの熱が上下樹脂フィルムに伝導し、上下樹脂フィルムの溶融温度を超えると上下樹脂フィルムが溶融して上下樹脂フィルムを溶着する樹脂フィルムの生産方法が知られている（特許文献１）。
また、上樹脂フィルムと下樹脂フィルムとの間にアルミニウム粉末等のコート材料を挟みこみ、レーザを照射し、このレーザを吸収したアルミニウム粉末からの熱が上下樹脂フィルムに伝導し、上下樹脂フィルムの溶融温度を超えると上下樹脂フィルムが溶融して上下樹脂フィルムを溶着する樹脂フィルムの生産方法が知られている（特許文献２）。
特開２００２−６７１６４号公報（平成１４年３月５日公開） 特開２００２−６６４４６号公報（平成１４年３月５日公開）
しかしながら、上記特許文献１に開示された樹脂フィルムの生産方法では、光吸収物質が液体なので、下樹脂フィルムに均一に塗布することが困難であり、不均一に光吸収物質が樹脂フィルムに塗布されて上下樹脂フィルムの溶着強さのバラツキが大きくなるという問題がある。
また、上記特許文献２に開示された樹脂フィルムの生産方法では、金属の粉末を下樹脂フィルムの表面に載せているので、樹脂フィルムの厚みがばらつき、平坦性が得られないという問題がある。
本発明は、上記の問題点に鑑みてなされたものであり、その目的は、上下樹脂フィルムの間隔が均一に保たれ厚みが均一で平坦性に優れた樹脂フィルムの生産方法を実現することにある。
本発明に係る樹脂フィルムの生産方法は、第１熱可塑性樹脂の表面に金属薄膜を蒸着もしくは印刷し、前記金属薄膜の上に第２熱可塑性樹脂を載置し、前記第１及び第２熱可塑性樹脂を、前記金属薄膜を挟む方向に加圧し、前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通して前記金属薄膜にレーザを照射することによって、前記金属薄膜を開口させて前記第１及び第２熱可塑性樹脂同士を溶着することを特徴とする。
この特徴によれば、前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通して前記金属薄膜にレーザを照射するので、金属薄膜に照射されたレーザが熱に変換され、この熱により金属薄膜に貫通穴が形成されて第１及び第２熱可塑性樹脂同士が溶着する。レーザ光を吸収するために、蒸着もしくは印刷によって形成した金属薄膜を用いるので、第１及び第２熱可塑性樹脂の間隔を均一に保ったままで第１及び第２熱可塑性樹脂を接合することができる。
本発明に係る他の樹脂フィルムの生産方法は、開口を有する金属薄膜を第１熱可塑性樹脂の表面に蒸着もしくは印刷し、前記金属薄膜の上に第２熱可塑性樹脂を載置し、前記第１及び第２熱可塑性樹脂を、前記金属薄膜を挟む方向に加圧し、前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通して前記金属薄膜の開口の周縁にレーザを照射することによって、前記金属薄膜の開口を通して前記第１及び第２熱可塑性樹脂同士を溶着することを特徴とする。
この特徴によれば、前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通してレーザ光を照射する金属薄膜に予め開口が形成されているので、より低いエネルギーで第１及び第２熱可塑性樹脂を接合することができる。
本発明に係る樹脂フィルムの生産方法では、前記金属薄膜の開口の直径は、前記レーザのビーム径よりも小さいことが好ましい。
この構成によれば、金属薄膜の開口の周縁にレーザを確実に照射することができる。
本発明に係る樹脂フィルムの生産方法では、前記第１熱可塑性樹脂の厚みは１００μｍ以下であり、前記第２熱可塑性樹脂の厚みは１００μｍ以下であることが好ましい。
この構成によれば、厚みが１００μｍ以下の薄いフィルムを、フィルム間隔を保ったまま接合することができる。
本発明に係る樹脂フィルムの生産方法では、前記金属薄膜の開口は、複数個であり、マトリックス状に配置されていることが好ましい。
本発明に係る樹脂フィルムの生産方法では、前記金属薄膜の開口は、複数個であり、列状に配置されていることが好ましい。
本発明に係る樹脂フィルムの生産方法は、第１熱可塑性樹脂の表面に金属薄膜を蒸着もしくは印刷し、前記金属薄膜の上に第２熱可塑性樹脂を載置し、前記第１及び第２熱可塑性樹脂を、前記金属薄膜を挟む方向に加圧し、前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通して前記金属薄膜にレーザを照射することによって、前記金属薄膜を開口させて前記第１及び第２熱可塑性樹脂同士を溶着する。このため、第１及び第２熱可塑性樹脂の間隔を均一に保ったままで第１及び第２熱可塑性樹脂を接合することができる。
本発明の実施形態について図１ないし図７に基づいて説明すると以下の通りである。
（実施の形態１）
図１（ａ）〜（ｄ）は、実施の形態１に係る樹脂フィルム１の生産方法を示す断面図である。まず、図１（ａ）に示すように、下フィルム２の表面に、蒸着もしくは印刷によって金属薄膜３を形成する。そして、金属薄膜３の上に上フィルム４を載置する。上フィルム４及び下フィルム２は、０．１ｍｍ以下の厚みを有しており、熱可塑性樹脂によって構成されている。この熱可塑性樹脂は、例えば、ＰＥＮ（Polyethylene Naphthalate ポリエチレンナフタレート）であり、ＰＩ（Polyimide ポリイミド）またはＰＣ（Polycarbonate ポリカーボネイト）であってもよい。金属薄膜３の厚みは、数十ｎｍである。金属薄膜３は、蒸着可能または印刷可能な金属、例えば、Ａｕ、Ａｇ、Ｃｕ、Ｎｉのうちの少なくとも１つによって構成されている。
次に、図１（ｂ）に示すように、透明ガラス基板５及び６によって、下フィルム２、金属薄膜３及び上フィルム４を挟み、金属薄膜３を挟む矢印に示す方向に加圧して、下フィルム２及び上フィルム４を金属薄膜３に密着させる。
その後、図１（ｃ）に示すように、ガラス基板６及び上フィルム４を通して金属薄膜３にレーザ７を照射すると、レーザエネルギが金属薄膜３に吸収され、金属薄膜３が発熱し、近接する下フィルム２及び上フィルム４の樹脂を溶融する。金属薄膜３は、レーザから吸収した熱エネルギによって貫通穴が開口し、この開口を通って、下フィルム２及び上フィルム４の樹脂が溶融して一体化し、下フィルム２及び上フィルム４が溶着する。下フィルム２及び上フィルム４は加圧されて金属薄膜３に密着しているので、効率的に伝熱され、溶融した樹脂が交じり合って、下フィルム２及び上フィルム４が溶着する。
金属薄膜３がレーザエネルギを熱に変換する効率は高いので、低出力のレーザによって、下フィルム２及び上フィルム４を溶着することができる。
そして、図１（ｄ）に示すように、下フィルム２及び上フィルム４の金属薄膜３を突き破った部分のみ溶着する。金属薄膜３がレーザエネルギから吸収した熱は、金属薄膜３の横方向に拡散するため、下フィルム２及び上フィルム４の表面への熱の影響を抑えることができる。このようにして、下フィルム２、金属薄膜３及び上フィルム４を有する樹脂フィルム１が製造される。
本実施の形態では、ガラス基板６及び上フィルム４を通して金属薄膜３にレーザ７を照射する例を示したが、本発明はこれに限定されない。ガラス基板５及び下フィルム２を通して金属薄膜３にレーザ７を照射してもよい。後述する実施の形態２においても同様である。
以上のように実施の形態１によれば、金属薄膜３を下フィルム２に蒸着または印刷によって形成するので、金属薄膜３の厚みを均一にすることができ、厚みのバラツキが小さい樹脂フィルム１を生産することができる。
また、下フィルム２及び上フィルム４によって挟み込まれた金属薄膜３は、光エネルギー吸収率が高いので、低エネルギーのレーザ光７によって、下フィルム２及び上フィルム４を溶着することができる。
溶着された下フィルム２及び上フィルム４によって挟み込まれた金属薄膜３は、配線、電極として活用することができる。
図２（ａ）〜（ｃ）は、実施の形態１に係る樹脂フィルムの生産方法によって生産された樹脂フィルムの剥離強度の測定方法を説明する図である。
下フィルム２の表面に金属薄膜３を蒸着もしくは印刷し、金属薄膜３の上に上フィルム４を載置し、下フィルム２及び上フィルム４を、金属薄膜３を挟む方向に加圧し、上フィルム４を通して金属薄膜３にレーザ７を照射することによって、下フィルム２及び上フィルム４同士を溶着する。そして、剥離強度を測定する。レーザ７の照射径は０．６ｍｍであり、照射時間は０．１秒であり、レーザ出力は２０Ｗである。前述した特許文献１に開示された樹脂フィルムの生産方法では、溶着強度は、０Ｎ（ニュートン）（初期剥離）であった。これに対して、実施の形態１に係る樹脂フィルムの生産方法では、溶着強度が８．１３Ｎであった。
（実施の形態２）
図３（ａ）〜（ｄ）は、実施の形態２に係る樹脂フィルムの生産方法を示す断面図である。実施の形態１で前述した構成要素と同一の構成要素には同一の参照符号を付している。従って、これらの構成要素の詳細な説明は省略する。
まず、図３（ａ）に示すように、下フィルム２の表面に、蒸着もしくは印刷によって金属薄膜３ａを形成する。
図４（ａ）〜（ｆ）は、実施の形態２に係る樹脂フィルムの生産方法によって金属薄膜３ａに形成された開口８のパターンを示す平面図である。図５（ａ）〜（ｆ）は、実施の形態２に係る樹脂フィルムの生産方法によって金属薄膜３ａに形成された溶着領域９ａ〜９ｆを示す平面図である。
図４（ａ）に示すように、金属薄膜３ａの中央には、複数の円形の開口８がマトリックス状パターンに形成されている。このようなパターンは、蒸着では、マスク形状の工夫、及び２個以上の工程を組み合わせることによって実現することができる。また、印刷によれば、より自由度の高いパターンを描くことができる。
そして、この金属薄膜３ａの上に上フィルム４を載置する。上フィルム４及び下フィルム２は、０．１ｍｍ以下の厚みを有しており、熱可塑性樹脂によって構成されている。この熱可塑性樹脂は、例えば、ＰＥＮであり、ＰＩまたはＰＣであってもよい。金属薄膜３ａの厚みは、数十ｎｍである。金属薄膜３ａは、蒸着可能または印刷可能な金属、例えば、Ａｕ、Ａｇ、Ｃｕ、Ｎｉのうちの少なくとも１つによって構成されている。
次に、図３（ｂ）に示すように、透明ガラス基板５及び６によって、下フィルム２、金属薄膜３ａ及び上フィルム４を挟み、金属薄膜３ａを挟む矢印に示す方向に加圧して、下フィルム２及び上フィルム４を金属薄膜３ａに密着させる。
その後、図３（ｃ）に示すように、ガラス基板６及び上フィルム４を通して金属薄膜３ａの開口８の周縁にレーザ７を照射する。金属薄膜３ａの開口８の直径は、レーザ７のビーム径よりも小さい。そして、レーザ７のエネルギが金属薄膜３ａ開口８の周縁に吸収され、金属薄膜３が発熱し、近接する下フィルム２及び上フィルム４の樹脂を溶融する。金属薄膜３ａの開口８を通って、下フィルム２及び上フィルム４の樹脂が溶融して一体化し、下フィルム２及び上フィルム４が溶着する。下フィルム２及び上フィルム４は加圧されて金属薄膜３ａに密着しているので、効率的に伝熱され、溶融した樹脂が交じり合って、下フィルム２及び上フィルム４が溶着する。
そして、図５（ａ）及び図３（ｄ）に示すように、マトリックス状に配置された複数の開口８を通って下フィルム２及び上フィルム４の樹脂が溶着した略正方形状の溶着領域９ａが形成される。金属薄膜３ａがレーザエネルギから吸収した熱は、金属薄膜３ａの横方向に拡散するため、下フィルム２及び上フィルム４の表面への熱の影響を抑えることができる。このようにして、下フィルム２、金属薄膜３ａ及び上フィルム４を有する樹脂フィルム１ａが製造される。
実施の形態２では、複数の開口８をマトリックス状に金属薄膜３ａに形成した例を示したが、本発明はこれに限定されない。例えば、図４（ｂ）に示すように複数の開口８を金属薄膜３ａの中央に配置してもよい。この場合は、図５（ｂ）に示すように、略円状の溶着領域９ｂが金属薄膜３ａの中央に形成される。
また、図４（ｃ）に示すように、複数の開口８を金属薄膜３ａの中央に一列に配置してもよい。この場合は、図５（ｃ）に示すように、略棒状の溶着領域９ｃが金属薄膜３ａの中央に形成される。さらに、図４（ｄ）に示すように、２列に複数の開口８を配置してもよい。この場合は、図５（ｄ）に示すような略長方形状の溶着領域９ｃが形成される。図４（ｅ）に示すように、３列に配置して、図５（ｅ）に示す略正方形状の溶着領域９ｅを形成してもよい。図４（ｆ）に示すように複数の開口８を配置して、図５（ｆ）に示す溶着領域９ｆを形成してもよい。これらのパターンは、蒸着では、マスク形状の工夫、及び２個以上の工程を組み合わせることによって実現することができる。また、印刷によれば、より自由度の高いパターンを描くことができる。
金属薄膜３ａは、蒸着または印刷によって形成するので、エリア制御が容易に行え、上記のような複数の開口８のパターンを精密な位置に形成することができる。このようにして形成した金属薄膜３ａは、配線または電極として活用することができる。
図６（ａ）及び（ｂ）は、実施の形態１及び２に係る樹脂フィルムの生産方法によって金属薄膜に形成された穴を観察する方法を説明する図である。図７（ａ）及び（ｂ）は、実施の形態１及び２に係る樹脂フィルムの生産方法によって金属薄膜に形成された穴の画像を示す図である。
図７（ａ）は、実施の形態１の開口無しの金属薄膜３を形成する場合の溶着箇所の画像を示している。図７（ｂ）は、実施の形態２の複数の開口を有する金属薄膜３ａを形成する場合の溶着箇所の画像を示している。レーザの照射径は両者とも０．６ｍｍであり、照射時間は０．１秒であり、レーザ出力は１２ワット（Ｗ）である。レーザ出力が同じであれば、実施の形態２の複数の開口を有する金属薄膜３ａの溶着面積は、実施の形態１の開口無しの金属薄膜３の溶着面積よりも大きく増大し、溶着強度は向上する。従って、実施の形態２の生産方法によれば、実施の形態１の生産方法よりも低いレーザ出力により溶着することができる。実施の形態２の複数の開口を有する金属薄膜３ａでは、金属薄膜を突き破るためのレーザエネルギーが不要となるためである。
実施の形態１及び２の生産方法によって生産された樹脂フィルムは、ＦＰＣフィルム（フレキシブルプリント基板）に使用することができる。
本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。
本発明は、上樹脂フィルムと下樹脂フィルムとを溶着する樹脂フィルムの生産方法に適用することができる。本発明の生産方法によって生産された樹脂フィルムは、ＦＰＣフィルム（フレキシブルプリント基板）に適用することができる。
（ａ）〜（ｄ）は、実施の形態１に係る樹脂フィルムの生産方法を示す断面図である。 （ａ）〜（ｃ）は、実施の形態１に係る樹脂フィルムの生産方法によって生産された樹脂フィルムの剥離強度の測定方法を説明する図である。 （ａ）〜（ｄ）は、実施の形態２に係る樹脂フィルムの生産方法を示す断面図である。 （ａ）〜（ｆ）は、実施の形態２に係る樹脂フィルムの生産方法によって金属薄膜に形成された穴パターンを示す平面図である。 （ａ）〜（ｆ）は、実施の形態２に係る樹脂フィルムの生産方法によって金属薄膜に形成された溶着領域を示す平面図である。 （ａ）及び（ｂ）は、実施の形態１及び２に係る樹脂フィルムの生産方法によって金属薄膜に形成された穴を観察する方法を説明する図である。 （ａ）及び（ｂ）は、実施の形態１及び２に係る樹脂フィルムの生産方法によって金属薄膜に形成された穴の画像を示す図である。
符号の説明
１ 樹脂フィルム
２ 下フィルム（第１熱可塑性樹脂）
３ 金属薄膜
４ 上フィルム（第２熱可塑性樹脂）
６ ガラス基板
７ レーザ
８ 開口
９ａ〜９ｆ 溶着領域

Claims (6)

  1. 第１熱可塑性樹脂の表面に金属薄膜を蒸着もしくは印刷し、
    前記金属薄膜の上に第２熱可塑性樹脂を載置し、
    前記第１及び第２熱可塑性樹脂を、前記金属薄膜を挟む方向に加圧し、
    前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通して前記金属薄膜にレーザを照射することによって、前記金属薄膜を開口させて前記第１及び第２熱可塑性樹脂同士を溶着することを特徴とする樹脂フィルムの生産方法。
  2. １個以上の開口を有する金属薄膜を第１熱可塑性樹脂の表面に蒸着もしくは印刷し、
    前記金属薄膜の上に第２熱可塑性樹脂を載置し、
    前記第１及び第２熱可塑性樹脂を、前記金属薄膜を挟む方向に加圧し、
    前記第１熱可塑性樹脂または前記第２熱可塑性樹脂を通して前記金属薄膜の開口の周縁にレーザを照射することによって、前記金属薄膜の開口を通して前記第１及び第２熱可塑性樹脂同士を溶着することを特徴とする樹脂フィルムの生産方法。
  3. 前記金属薄膜の開口の直径は、前記レーザのビーム径よりも小さい請求項２記載の樹脂フィルムの生産方法。
  4. 前記第１熱可塑性樹脂の厚みは１００μｍ以下であり、前記第２熱可塑性樹脂の厚みは１００μｍ以下である請求項１または２に記載の樹脂フィルムの生産方法。
  5. 前記金属薄膜の開口は、複数個であり、マトリックス状に配置されている請求項２記載の樹脂フィルムの生産方法。
  6. 前記金属薄膜の開口は、複数個であり、列状に配置されている請求項２記載の樹脂フィルムの生産方法。
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