JP5049799B2 - Member joining method and sheet joined body manufacturing method - Google Patents

Member joining method and sheet joined body manufacturing method Download PDF

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Publication number
JP5049799B2
JP5049799B2 JP2008008229A JP2008008229A JP5049799B2 JP 5049799 B2 JP5049799 B2 JP 5049799B2 JP 2008008229 A JP2008008229 A JP 2008008229A JP 2008008229 A JP2008008229 A JP 2008008229A JP 5049799 B2 JP5049799 B2 JP 5049799B2
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Prior art keywords
sheet
welded
joined body
members
laser beam
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JP2008008229A
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Japanese (ja)
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JP2009166394A (en
Inventor
直之 松尾
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Nitto Denko Corp
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Nitto Denko Corp
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Priority to JP2008008229A priority Critical patent/JP5049799B2/en
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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
    • 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
    • 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
    • B29C66/40—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
    • 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
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7292—Textile or other fibrous material made from plastics coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—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
    • 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
    • B29C66/92—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
    • B29C66/9292—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 in explicit relation to another variable, e.g. pressure 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
    • 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
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • 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
    • B29C65/1638—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 focusing the laser beam on the interface
    • 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
    • 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
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8223—Peel tests
    • 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
    • B29C66/70—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
    • B29C66/72—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
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides 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
    • B29K2277/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as reinforcement
    • B29K2277/10—Aromatic polyamides [Polyaramides] or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B29K2995/0027—Transparent for light outside the visible spectrum

Description

本発明は、部材接合方法、および、シート接合体製造方法に関する。   The present invention relates to a member joining method and a sheet joined body manufacturing method.

従来、部材どうしを接合する接合方法には種々の方法が採用されており、部材どうしを直接接合する部材接合方法が広く採用されている。
このような部材接合方法として、従来、樹脂部材どうしをレーザー光で溶着させる方法などが採用されたりしている。
この樹脂部材どうしをレーザー光で溶着させる場合には、通常、表面が樹脂材料で形成された部材どうしをその表面を面接させた状態で重畳させて、この重ね合わせた部分にレーザー光を照射して表面の樹脂材料を溶融させて溶着部を形成させる方法が採用されている。
このような樹脂部材の表面が溶着されて接合された接合体の形成においては、例えば、赤外線レーザーあるいは近赤外線レーザーが用いられ、樹脂部材の面接触箇所には、カーボンブラックや、ポルフィリン系色素など、赤外領域や近赤外領域に吸収ピークを有する物質（以下「吸収剤」ともいう）が用いられたりしている。
すなわち、溶着させる箇所に吸収剤を配した状態で該吸収剤が配置された箇所に向けてレーザー光を照射し、該照射したレーザー光を樹脂部材の背面側から表面側に透過させて吸収剤によって吸収させることによりレーザー光の光エネルギーを部材の面接箇所において熱エネルギーに変換させて溶着させる方法が従来採用されている（下記特許文献１参照）。
ところで、部材どうしの接合においては、一般的に、接合強度の向上が求められており、このようなレーザー光による部材の接合においても接合強度の向上が求められている。 Conventionally, various methods have been adopted as joining methods for joining members, and member joining methods for joining members directly have been widely adopted.
As such a member joining method, conventionally, a method of welding resin members with a laser beam or the like has been adopted.
When the resin members are welded with laser light, the members whose surfaces are formed of a resin material are usually overlapped with the surfaces in contact with each other, and the overlapped portions are irradiated with laser light. A method of forming a welded portion by melting the resin material on the surface is employed.
In the formation of a joined body in which the surfaces of such resin members are welded and joined, for example, an infrared laser or a near infrared laser is used, and carbon black, porphyrin-based dyes, etc. A substance having an absorption peak in the infrared region or near infrared region (hereinafter also referred to as “absorbent”) is used.
That is, in the state where the absorbent is arranged at the place to be welded, the laser beam is irradiated toward the place where the absorbent is disposed, and the irradiated laser light is transmitted from the back side to the surface side of the resin member to absorb the absorbent. Conventionally, a method in which the light energy of the laser beam is converted into thermal energy at the position where the member is interviewed and then welded is absorbed (see Patent Document 1 below).
By the way, in joining of members, generally improvement of joining strength is calculated | required, and improvement of joining strength is calculated | required also in joining of the member by such a laser beam.

このような要望に対し、例えば、シート状の部材（以下「シート部材」ともいう）などにおいては、同じ樹脂材料が用いられて形成されたシート部材であっても表面が樹脂繊維によって紙状や布状に形成されているシート部材は、樹脂フィルムなどの表面平滑なシート部材に比べてレーザー光による接合が難しく、十分な接合強度を有するシート接合体を得ることが困難であるという問題を有している。
なお、このような問題はシート部材のみならず棒状部材など他の形状の部材を接合する場合においても共通する問題である。
すなわち、従来、表面が樹脂繊維によって紙状または布状に形成された部材をレーザー光によって接合する場合においては、接合強度を向上させることが困難であるという問題を有している。 In response to such a request, for example, in the case of a sheet-like member (hereinafter also referred to as “sheet member”), even if the sheet member is formed using the same resin material, the surface is made of paper-like or resin-like fibers. The sheet member formed in a cloth shape has a problem that it is difficult to bond with a laser beam compared to a sheet member having a smooth surface such as a resin film, and it is difficult to obtain a sheet bonded body having sufficient bonding strength. is doing.
Such a problem is a common problem when not only a sheet member but also other shape members such as a rod-shaped member are joined.
That is, conventionally, when a member whose surface is formed into a paper shape or a cloth shape with resin fibers is bonded by laser light, it has been difficult to improve the bonding strength.

特開２００４−１９５８２９号公報JP 2004-195829 A

本発明は、表面が樹脂繊維によって紙状または布状に形成されている部材がレーザー光によって溶着された接合体の接合強度を向上させることを課題としている。   An object of the present invention is to improve the bonding strength of a bonded body in which a member whose surface is formed into a paper shape or a cloth shape by resin fibers is welded by laser light.

本発明者は、上記課題を解決すべく鋭意検討を行ったところ、表面が樹脂繊維によって紙状または布状に形成されている部材であっても、レーザー光による溶着の際に、一定以上の圧力で加圧することにより優れた接合強度を発揮させうることを見出した。   The present inventor has intensively studied to solve the above-mentioned problems. As a result, even when the surface is a member formed of resin fibers in a paper shape or a cloth shape, a certain amount or more is required during welding with a laser beam. It has been found that excellent bonding strength can be exerted by pressurizing with pressure.

すなわち、本発明にかかる部材接合方法は、少なくとも表面が樹脂繊維によって紙状または布状に形成されている部材を用い、前記表面どうしを溶着させて接合する部材接合方法であって、前記樹脂繊維は、芳香族ポリアミド繊維であり、前記芳香族ポリアミドは、ｍ−フェニレンジアミンとイソフタル酸クロリドが共縮重合されてなる芳香族ポリアミドであり、前記部材の表面どうしを面接させ、該面接されている箇所の前記部材の背面側から前記面接されている表面側にレーザー光を透過させて前記表面の樹脂繊維を加熱溶融させることにより前記表面どうしを溶着し、しかも、その際に前記表面が面接されている箇所を５０ｋｇｆ／ｃｍ2以上の圧力で加圧しつつ前記レーザー光を照射して前記表面どうしを溶着することを特徴としている。
That is, the member joining method according to the present invention is a member joining method in which at least the surface is formed into a paper or cloth shape with resin fibers, and the surfaces are welded together to join the resin fibers. Is an aromatic polyamide fiber, and the aromatic polyamide is an aromatic polyamide obtained by co-condensation polymerization of m-phenylenediamine and isophthalic chloride, and the surfaces of the members are in contact with each other and are in contact with each other. Laser beams are transmitted from the back side of the member to the surface side that is in contact with each other, and the resin fibers on the surface are heated and melted to weld the surfaces together. as characterized by welding the said surface each other the laser beam by irradiating it has portions while pressing at 50 kgf / cm 2 or more pressure That.

また、本発明にかかるシート接合体の製造方法は、少なくとも表面が樹脂繊維によって紙状または布状に形成されているシート部材の前記表面どうしが溶着されて接合されているシート接合体の製造方法であって、前記樹脂繊維は、芳香族ポリアミド繊維であり、前記芳香族ポリアミドは、ｍ−フェニレンジアミンとイソフタル酸クロリドが共縮重合されてなる芳香族ポリアミドであり、前記シート部材の表面どうしを面接させ、該面接されている箇所の前記シート部材の背面側から前記面接されている表面側にレーザー光を透過させて前記表面の樹脂繊維を加熱溶融させることにより前記表面どうしを溶着し、しかも、その際に前記表面が面接されている箇所を５０ｋｇｆ／ｃｍ2以上の圧力で加圧しつつ前記レーザー光を照射して前記表面どうしを溶着することを特徴としている。
Further, the method for producing a sheet joined body according to the present invention is a method for producing a sheet joined body in which the surfaces of the sheet members, at least the surfaces of which are formed into a paper shape or a cloth shape by resin fibers, are welded together. The resin fiber is an aromatic polyamide fiber, and the aromatic polyamide is an aromatic polyamide obtained by co-condensation polymerization of m-phenylenediamine and isophthalic acid chloride, and the surfaces of the sheet members are bonded to each other. The surfaces are welded to each other by heat-melting resin fibers on the surface by transmitting laser light from the back side of the sheet member to the surface side that is in contact with the surface, In this case, the surface is irradiated with the laser light while pressurizing the portion where the surface is in contact with a pressure of 50 kgf / cm 2 or more. It is characterized by welding each other.

本発明によれば、表面が樹脂繊維によって紙状または布状に形成された部材を用いながらも、前記表面どうしを面接させた箇所に５０ｋｇｆ／ｃｍ2以上の圧力を加えつつレーザー光を照射して前記表面どうしを溶着させることから接合体に優れた接合強度を付与することができる。 According to the present invention, a laser beam is irradiated while applying a pressure of 50 kgf / cm 2 or more to a portion where the surfaces are in contact with each other while using a member whose surface is formed into a paper shape or a cloth shape with resin fibers. Thus, since the surfaces are welded to each other, an excellent bonding strength can be imparted to the bonded body.

以下に、本発明の好ましい実施の形態について説明する。
まず、本実施形態の部材接合方法として、アラミド繊維が紙状に加工された素材（以下「アラミド紙」ともいう）で表面層が形成された積層シートどうしをレーザー光によって溶着してシート接合体を製造する場合を例に説明する。 The preferred embodiments of the present invention will be described below.
First, as a member joining method of the present embodiment, a laminated sheet in which a surface layer is formed of a material in which aramid fibers are processed into a paper shape (hereinafter also referred to as “aramid paper”) is welded with a laser beam to join the sheet. An example of manufacturing the case will be described.

図１は、本実施形態の部材接合方法によって形成されるシート接合体の部分断面図を示しており、前記シート接合体は、２枚のシート部材が接合されて形成されている。
図１中の１は、２枚のシート部材の内の第一のシート部材である積層シート（以下「第一積層シート」ともいう）を表している。
また、図１中の１’は、前記第一積層シート１とともにシート接合体を形成する第二のシート部材（以下「第二積層シート」ともいう）を表している。 FIG. 1 shows a partial cross-sectional view of a sheet joined body formed by the member joining method of the present embodiment, and the sheet joined body is formed by joining two sheet members.
1 in FIG. 1 represents a laminated sheet (hereinafter also referred to as “first laminated sheet”) which is a first sheet member of two sheet members.
Moreover, 1 'in FIG. 1 represents the 2nd sheet | seat member (henceforth a "2nd lamination sheet") which forms a sheet joined body with the said 1st lamination sheet 1. FIG.

図１中の１０は、第一積層シート１と第二積層シート１’とがその表面どうしを面接させて接合されている接合部を表しており、１０ａは、前記接合部１０を形成させるべく第一積層シート１と第二積層シート１’とが面接された状態で重畳されている領域（以下「重畳部」ともいう）を表している。
さらに、図１中の２０は、第一積層シート１と第二積層シート1’の表面どうしが溶着されて形成された溶着部を表している。
この溶着部２０の形成は、前記第二積層シート１’の背面側からレーザー光が照射され、しかも、前記第二積層シート１’をその背面側から表面側に向けて透過させるべくレーザー光が照射されて第一積層シート１と第二積層シート1’の面接箇所が加熱されることにより形成されている。
この溶着部２０の形成方法（シート部材接合方法）については、後段において詳述する。 1 in FIG. 1 represents a joint part in which the first laminated sheet 1 and the second laminated sheet 1 ′ are joined with their surfaces in contact with each other, and 10 a is to form the joined part 10. The area | region (henceforth a "superimposition part") on which the 1st lamination sheet 1 and 2nd lamination sheet 1 'were overlapped in the surface-contact state is represented.
Furthermore, 20 in FIG. 1 represents a welded portion formed by welding the surfaces of the first laminated sheet 1 and the second laminated sheet 1 ′.
The welded portion 20 is formed by irradiating a laser beam from the back side of the second laminated sheet 1 'and transmitting the second laminated sheet 1' from the back side toward the surface side. It forms by being irradiated and heating the interview location of 1st lamination sheet 1 and 2nd lamination sheet 1 '.
A method for forming the welded portion 20 (sheet member joining method) will be described in detail later.

図２は、前記第一積層シート１ならびに前記第二積層シート１’として本実施形態の部材接合方法に用いられている積層シートの積層構造を示す断面図である。
この図２に示すように、第一積層シート１（第二積層シート１’も同じ）は、ポリエチレンナフタレート（以下「ＰＥＮ」ともいう）が用いられたフィルムと、このＰＥＮフィルム２の表裏両面に配されたアラミド紙４、４との３枚のシートが、接着剤３を介して接着されて積層されている。 FIG. 2 is a cross-sectional view showing a laminated structure of laminated sheets used in the member joining method of the present embodiment as the first laminated sheet 1 and the second laminated sheet 1 ′.
As shown in FIG. 2, the first laminated sheet 1 (the same applies to the second laminated sheet 1 ′) includes a film using polyethylene naphthalate (hereinafter also referred to as “PEN”), and both front and back surfaces of the PEN film 2. Three sheets of aramid paper 4, 4 arranged on each other are bonded and laminated via an adhesive 3.

この積層シートの厚さについては、特に限定されるものではないが、通常５０μｍ以上、５ｍｍ以下程度の厚さのものを好適に用い得る。
前記アラミド紙４は、その厚みや坪量などについては、使用されるレーザー光の波長などによって変更されるものではあるが、８００〜２０００ｎｍの波長の赤外線レーザーを用いる場合においては、通常、１６〜１２５μｍ厚さのアラミド紙４を用いることができる。
このような、アラミド紙４としては、ｍ−フェニレンジアミンとイソフタル酸クロリドが共縮重合されてなるメタ系芳香族ポリアミドの繊維が用いられたアラミド紙（例えば、デュポン社製、ノーメックスペーパー（ＮｏｍｅｘＰａｐｅｒ））が特に好適である。
ＰＥＮフィルム２、あるいは、接着剤３については、特に限定されるものではないが、前記アラミド紙４よりもレーザー光の吸収（吸光係数）が低減されるように形成されていることが好ましい。 The thickness of the laminated sheet is not particularly limited, but normally a thickness of about 50 μm or more and 5 mm or less can be suitably used.
The aramid paper 4 is changed in thickness, basis weight, and the like depending on the wavelength of the laser light to be used. In the case where an infrared laser having a wavelength of 800 to 2000 nm is used, it is usually 16 to Aramid paper 4 having a thickness of 125 μm can be used.
As such an aramid paper 4, an aramid paper (for example, Nomex Paper manufactured by DuPont) using a meta-aromatic polyamide fiber obtained by co-condensation polymerization of m-phenylenediamine and isophthalic acid chloride is used. Is particularly preferred.
Although it does not specifically limit about the PEN film 2 or the adhesive agent 3, It is preferable that it forms so that absorption (absorption coefficient) of a laser beam may be reduced rather than the said aramid paper 4. FIG.

なお、本実施形態における部材接合方法に用いる積層シートとしては、上記例示のものに代えて種々の態様のものを採用することができる。
例えば、層数や各層の材質などは適宜変更が可能である。
また、積層シートではなく、アラミド紙の単層シートなども本実施形態における部材接合方法に用いるシート部材として採用することが可能である。
ただし、溶着を実施すべく前記重畳部１０ａにレーザー光を照射した際に、より効率よくシート部材どうしが面接する面接箇所にレーザー光の光エネルギーを到達させ得るように少なくとも一方のシート部材は、使用するレーザー光に対する光透過率に優れた（吸光係数が小さい）状態に形成されていることが好適である。
また、溶着時における相溶性を向上させることができ、よりいっそう接合強度を向上させうる点において一方のシート部材の表面を形成する樹脂繊維と他方のシート部材の表面を形成する樹脂繊維とは、同種の樹脂材料が用いられていることが好適である。 In addition, as a lamination sheet used for the member joining method in this embodiment, it can replace with the said illustration and can employ | adopt the thing of a various aspect.
For example, the number of layers and the material of each layer can be changed as appropriate.
Further, not a laminated sheet but also a single layer sheet of aramid paper can be employed as the sheet member used in the member joining method in the present embodiment.
However, when irradiating the overlapping portion 10a with laser light so as to perform welding, at least one of the sheet members is such that the light energy of the laser light can be reached more efficiently at the contact point where the sheet members are in contact with each other. It is preferable that the light transmittance of the laser beam to be used is excellent (small extinction coefficient).
In addition, the resin fiber that forms the surface of one sheet member and the resin fiber that forms the surface of the other sheet member in that the compatibility at the time of welding can be improved and the bonding strength can be further improved. It is preferable that the same kind of resin material is used.

また、このシート部材の面接箇所には、レーザー光の光エネルギーの吸収効率を高めるべく、吸収剤を配することも可能である。
この吸収剤は、溶着に用いるレーザー光の波長などにもよるが、例えば、赤外領域や近赤外領域に波長の主ピークを有するレーザー光（赤外線レーザー、近赤外線レーザー）を用いて溶着を実施させる場合においては、カーボンブラックや、ポルフィリン系色素など用いることができる。 Moreover, it is also possible to arrange | position an absorber in the interview location of this sheet | seat member in order to improve the absorption efficiency of the optical energy of a laser beam.
Depending on the wavelength of the laser beam used for welding, this absorber can be welded using, for example, laser light (infrared laser, near infrared laser) having a main peak of wavelength in the infrared region or near infrared region. In the case of carrying out, carbon black, porphyrin pigment, etc. can be used.

なお、用いるレーザー光には、半導体レーザー、ＹＡＧレーザー、ファイバーレーザーなど種々の発振手段によって得られるものを採用することができ、その発振方法も限定されるものではなく、連続的にレーザー光が照射される、いわゆる、ＣＷレーザー（Ｃｏｎｔｉｎｕｏｕｓ Ｗａｖｅ Ｌａｓｅｒ）と呼ばれるものや、フェムト秒レーザーなどのパルスレーザーを採用することができる。   In addition, what is obtained by various oscillation means, such as a semiconductor laser, a YAG laser, a fiber laser, can be employ | adopted for the laser beam to be used, The oscillation method is not limited, A laser beam is irradiated continuously. A so-called CW laser (continuous wave laser) or a pulsed laser such as a femtosecond laser can be employed.

さらには、レーザー光のビーム形状についても、スポットビーム、ラインビーム、エリアビームなど種々の形態で照射されるレーザー光を本実施形態の部材接合方法に採用することができる。
また、集光レーザーなども本実施形態の部材接合方法に採用することが可能である。 Furthermore, with respect to the beam shape of the laser beam, laser beam irradiated in various forms such as a spot beam, a line beam, and an area beam can be employed in the member bonding method of the present embodiment.
A condensing laser or the like can also be employed in the member bonding method of the present embodiment.

次いで、これらを用いた部材接合方法（溶着部の形成方法）について、図３を参照しつつ説明する。
図３は、溶着のための装置の概略側面図であり、図中のＴは、ＸＹテーブルを表しており、Ｇは、第一積層シート１と第二積層シート1’とが面接された重畳部１０ａに対して荷重（図３中の矢印Ｆ）を付加するためのガラス基板を表している。
また、Ｒはレーザー光を表している。 Next, a member joining method (a method for forming a welded portion) using these will be described with reference to FIG.
FIG. 3 is a schematic side view of an apparatus for welding, in which T denotes an XY table, and G denotes a superposition in which the first laminated sheet 1 and the second laminated sheet 1 ′ are in contact with each other. The glass substrate for applying a load (arrow F in FIG. 3) with respect to the part 10a is represented.
R represents laser light.

まず、このＸＹテーブルＴの上に第一積層シート１を載置し、この第一積層シート１上に第二積層シート1’の一部を重畳させた状態で載置して樹脂接合体として求められる形態に第一積層シート１と第二積層シート1’とを位置決めしてセットする。
このとき、第一積層シート１、第二積層シート1’は、いずれも、両面にアラミド紙が備えられていることから、重畳部１０ａにおいては、アラミド紙どうしが面接されることとなる。
また、このときアラミド紙どうしの面接個所に必要に応じてカーボンブラックや、ポルフィリン色素などの吸収剤を配する。
さらに、この重畳部１０ａの上にガラス基板Ｇを載置し、該ガラス基板Ｇにより第一積層シート１と第二積層シート1’との位置関係を固定するとともに、溶着をより確実なものとさせるべくこのガラス基板Ｇで第一積層シート１と第二積層シート1’との面接箇所（重畳部１０ａ）に対して圧力を加えた状態とさせる。
しかも、このときの重畳部１０ａに対する圧力が５０ｋｇｆ／ｃｍ2以上となるように加圧する。
なお、この“圧力”は、荷重Ｆを重畳部１０ａの面積で除して求めることができる。 First, the first laminated sheet 1 is placed on the XY table T, and a part of the second laminated sheet 1 ′ is placed on the first laminated sheet 1 to form a resin joined body. The first laminated sheet 1 and the second laminated sheet 1 ′ are positioned and set in the required form.
At this time, since both the first laminated sheet 1 and the second laminated sheet 1 ′ are provided with aramid paper on both surfaces, the aramid papers are in contact with each other in the overlapping portion 10a.
Further, at this time, an absorbent such as carbon black or a porphyrin dye is disposed at an interview location between the aramid papers as necessary.
Furthermore, the glass substrate G is placed on the overlapping portion 10a, and the positional relationship between the first laminated sheet 1 and the second laminated sheet 1 ′ is fixed by the glass substrate G, and the welding is more reliable. In order to make this, the glass substrate G is brought into a state in which pressure is applied to the contact portion (the overlapping portion 10a) between the first laminated sheet 1 and the second laminated sheet 1 ′.
In addition, the pressure is applied so that the pressure on the overlapping portion 10a at this time is 50 kgf / cm 2 or more.
This “pressure” can be obtained by dividing the load F by the area of the overlapping portion 10a.

次いで、上記のようにガラス基板Ｇによって重畳部１０ａが加圧された状態にセットされた第一積層シート１と第二積層シート1’に対して、前記加圧状態を維持しつつガラス基板Ｇの上方から重畳部１０ａにレーザー光Ｒを照射する。
そして、第二積層シート1’の背面側（図４における上面側）から表面側（図４における下面側）にかけて前記レーザー光Ｒを透過させて第一積層シート１との面接箇所に配した吸収剤に吸収させる。
このようにしてレーザー光Ｒを吸収剤に吸収させることによりレーザー光Ｒの光エネルギーをシート部材の面接箇所において熱エネルギーに変換させて第一積層シート１と第二積層シート1’の表面どうしを溶着させる。
あるいは、レーザー光Ｒとして集光レーザーを用いる場合には、例えば、前記吸収剤を用いずに、集光レーザーの焦点位置をアラミド紙どうしの面接箇所近傍に調整してレーザー光Ｒを照射することにより吸収剤を用いる場合と同様に第一積層シート１と第二積層シート1’の表面どうしを溶着させることもできる。 Next, the glass substrate G is maintained while maintaining the pressurized state with respect to the first laminated sheet 1 and the second laminated sheet 1 ′ set in a state where the overlapping portion 10a is pressurized by the glass substrate G as described above. The overlapping portion 10a is irradiated with laser light R from above.
And the absorption which distribute | arranged the said laser beam R from the back side (upper surface side in FIG. 4) of 2nd laminated sheet 1 'to the surface side (lower surface side in FIG. 4), and distribute | arranged to the 1st laminated sheet 1 interview location. Absorb to agent.
In this way, by absorbing the laser beam R into the absorbent, the light energy of the laser beam R is converted into thermal energy at the position where the sheet member is interviewed, so that the surfaces of the first laminated sheet 1 and the second laminated sheet 1 ′ are brought together. Weld.
Alternatively, when a condensing laser is used as the laser light R, for example, the focal point of the condensing laser is adjusted to the vicinity of the interview area between the aramid papers without using the absorbent, and the laser light R is irradiated. As in the case of using the absorbent, the surfaces of the first laminated sheet 1 and the second laminated sheet 1 ′ can be welded together.

また、同時にＸＹテーブルＴを操作して、この重畳部１０ａにおけるレーザー光Ｒの照射位置を移動させ、所定の領域ならびに所定のパターンで溶着部２０を形成させて樹脂接合体を形成させる。
なお、このときレーザー光のエネルギー密度が１．２Ｗ／ｍ2以上となるようにレーザー光を照射することが好ましく、１．５Ｗ／ｍ2以上であることがさらに好ましく、１．７Ｗ／ｍ2以上であることがより好ましい。 Simultaneously, the XY table T is operated to move the irradiation position of the laser beam R in the overlapping portion 10a, and the welded portion 20 is formed in a predetermined region and a predetermined pattern to form a resin joined body.
Incidentally, it is preferable that the energy density of the laser beam is irradiated with a laser beam so as to 1.2 W / m 2 or more, more preferably 1.5 W / m 2 or more, 1.7 W / m 2 More preferably.

このようにして面接箇所（重畳部１０ａ）に対する圧力が５０ｋｇｆ／ｃｍ2以上となるように加圧しつつレーザー光を照射することにより、表面が樹脂繊維によって紙状または布状に形成されている部材であっても溶着範囲を広く確保することができ、強固な接合部を形成させることができる。
しかも、アラミド繊維のような、例えば、３００℃を超えるような温度においても溶融することがなく、４００℃を超える温度で、溶融と分解とが同時に生じて通常の方法においては溶着させることができない樹脂繊維によって表面が紙状または布状に形成されているシート部材であっても溶着部に優れた接合強度を発揮させて接合体を形成させうる。 In this way, a member whose surface is formed into a paper or cloth shape with resin fibers by irradiating the laser beam while applying pressure so that the pressure on the interview location (overlapping portion 10a) is 50 kgf / cm 2 or more. Even so, a wide welding range can be secured, and a strong joint can be formed.
Moreover, it does not melt even at temperatures exceeding 300 ° C., such as aramid fibers, and melting and decomposition occur simultaneously at temperatures exceeding 400 ° C. and cannot be welded in a normal method. Even in the case of a sheet member whose surface is formed in the form of paper or cloth with resin fibers, a bonded body can be formed by exhibiting excellent bonding strength at the welded portion.

なお、レーザー光の照射時に重畳部１０ａに加える圧力を５０ｋｇｆ／ｃｍ2以上としているのは、５０ｋｇｆ／ｃｍ2未満の圧力では十分な接合強度を有するシート接合体を得ることができないためである。
したがって、より確実に接合強度に優れたシート接合体を得るためには、この重畳部１０ａに加える圧力を７５ｋｇｆ／ｃｍ2以上とすることが好ましく、１００ｋｇｆ／ｃｍ2以上とすることがさらに好ましい。
一方で、圧力を上げ過ぎると、圧力の増大に見合う接合強度の向上を得ることが困難となり、加圧が過剰となるおそれを有する点において、レーザー光の照射時に重畳部１０ａに加える圧力は、２５０ｋｇ／ｃｍ2以下とすることが好ましく、２００ｋｇｆ／ｃｍ2以下とすることがさらに好ましい。 The reason why the pressure applied to the overlapping portion 10a at the time of laser light irradiation is 50 kgf / cm 2 or more is that a sheet joined body having sufficient joining strength cannot be obtained at a pressure less than 50 kgf / cm 2 .
Therefore, in order to obtain a sheet joined body excellent in reliably bonding strength, it is preferable to the pressure applied to the overlapped portions 10a and 75 kgf / cm 2 or more, still more preferably 100 kgf / cm 2 or more.
On the other hand, if the pressure is increased too much, it will be difficult to obtain an improvement in bonding strength commensurate with the increase in pressure, and the pressure applied to the overlapping portion 10a during laser light irradiation may be excessive. It is preferably 250 kg / cm 2 or less, and more preferably 200 kgf / cm 2 or less.

なお、本実施形態においては、従来、接合強度に優れた溶着の実施が困難であり、本発明の効果をより顕著に発揮させ得る点において、アラミド（芳香族ポリアミド）繊維によって表面が形成されているシート部材の接合方法を説明した。
なかでも、特に接合強度に優れた溶着の実施が従来困難であったメタ系アラミド繊維によって表面が形成されているシート部材の説明方法を説明している。
また、積層シートに限定されるものでもなく、溶着される部材の少なくとも表面が樹脂繊維により紙状または布状に形成されているものであれば単層のシートであっても本発明の効果を上記例示と同様に得ることができる。
さらには、シート状の部材にも限定されるものでもなく、表面が樹脂繊維により紙状または布状に形成されているものであれば、棒状など他の形状の部材においてもこのような効果を得ることができる。 In the present embodiment, conventionally, it is difficult to perform welding with excellent bonding strength, and the surface is formed by aramid (aromatic polyamide) fibers in that the effects of the present invention can be exhibited more remarkably. The method for joining the sheet members has been described.
Among them, that describes the description method of the sheet member which is formed surface by particularly meta-aramid fibers performed with excellent welded joint strength was conventionally difficult.
Further, the present invention is not limited to a laminated sheet, and the effect of the present invention can be obtained even if it is a single-layer sheet as long as at least the surface of the member to be welded is formed in a paper or cloth shape with resin fibers. It can be obtained in the same manner as in the above examples.
Furthermore, the present invention is not limited to a sheet-like member. If the surface is formed into a paper-like or cloth-like shape with resin fibers, such an effect can be obtained even in a member having another shape such as a rod. Obtainable.

また、本実施形態においては、２枚の積層シートを用いてシート接合体を作製する場合を例示しているが、例えば、両面が樹脂繊維によって紙状または布状に形成されている１枚のシート部材を丸めて両端部を重畳させたり、前記シート部材を折り曲げて二重にしたりして形成された重畳部に対して所定の圧力を加えつつレーザー光で溶着するような場合も本発明の意図する範囲である。   Moreover, in this embodiment, although the case where a sheet | seat joined body is produced using two lamination sheets is illustrated, for example, one sheet by which both surfaces are formed in the shape of paper or cloth with resin fiber Even in the case where the sheet member is rolled and overlapped at both ends, or the sheet member is bent and doubled to be welded with a laser beam while applying a predetermined pressure to the overlapping portion, the present invention is also applicable. This is the intended range.

次に実施例を挙げて本発明をさらに詳しく説明するが、本発明はこれらに限定されるものではない。   EXAMPLES Next, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to these.

（実施例１）
実施例１のシート接合体を、下記のようなレーザー光照射装置を用いて製造した。
（使用レーザー光照射装置）
・レーザー光源：半導体レーザー
・レーザー波長：９４０ｎｍ
・最高出力：５０Ｗ
・スポット径：直径２ｍｍ Example 1
The sheet joined body of Example 1 was manufactured using the following laser beam irradiation apparatus.
(Used laser light irradiation device)
・ Laser light source: Semiconductor laser ・ Laser wavelength: 940 nm
・ Maximum output: 50W
・ Spot diameter: 2mm in diameter

また、シート接合体の形成には、下記構成の積層シートを用いた。
（積層シートの構成）
「アラミド紙／接着剤／ＰＥＮフィルム／接着剤／アラミド紙」の５層構成
なお、各層の“厚さ”ならびに“具体的な材質”は以下の通り。
・アラミド紙（５５μｍ厚さ）：「デュポン社製、商品名“ノーメックスペーパー”」
・接着剤（２５μｍ厚さ）：「アクリル系接着剤」
・ＰＥＮフィルム（１２５μｍ厚さ） Moreover, the laminated sheet of the following structure was used for formation of a sheet | seat joined body.
(Configuration of laminated sheet)
“Aramid paper / adhesive / PEN film / adhesive / aramid paper” 5-layer structure The “thickness” and “specific material” of each layer are as follows.
-Aramid paper (55 μm thickness): “DuPont's product name“ Nomex Paper ””
・ Adhesive (25μm thickness): “Acrylic adhesive”
・ PEN film (125μm thickness)

この積層シートにより形成された短冊状試料の一端側の表面に吸収剤（Ｇｅｎｔｅｘ社製、商品名「Ｃｌｅａｒｗｅｌｄ ＬＤ１２０Ｃ」）を塗布し、該短冊状試料と同一形状に形成された別の短冊状試料を全体が重なり合うようにして重畳させ、レーザー光に対する吸光係数が十分小さいガラス基板で、重畳されている２枚の短冊状試料の吸収剤塗布側の端部に圧力が５０ｋｇｆ／ｃｍ2となるように加圧して、レーザー光の照射を実施し溶着を行った。
このとき、レーザー光の照射位置を５０ｍｍ／秒の速度で移動させつつ、一辺１ｃｍの正方形の領域を走査させて溶着を実施した。 Another strip-shaped sample formed in the same shape as the strip-shaped sample by applying an absorbent (manufactured by Gentex, trade name “Clearweld LD120C”) to the surface of one end of the strip-shaped sample formed by the laminated sheet Are overlapped so as to overlap each other, and the pressure is 50 kgf / cm 2 at the end of the two strip-shaped samples superimposed on the absorbent coating side with a glass substrate having a sufficiently small extinction coefficient for laser light. And welding was performed by irradiating with laser light.
At this time, welding was carried out by scanning a square region having a side of 1 cm while moving the irradiation position of the laser beam at a speed of 50 mm / sec.

（実施例２〜６、比較例１）
ガラス基板での加圧を７５ｋｇｆ／ｃｍ2（実施例２）、１００ｋｇｆ／ｃｍ2（実施例３）、１２５ｋｇｆ／ｃｍ2（実施例４）、１５０ｋｇｆ／ｃｍ2（実施例５）、１７５ｋｇｆ／ｃｍ2（実施例６）とした以外は、実施例１と同様にして実施例２〜６のシート接合体を作製した。
また、ガラス基板での加圧を２５ｃｍ2とした以外は、実施例１と同様にして比較例１のシート接合体を作製した。 (Examples 2-6, Comparative Example 1)
The pressure in the glass substrate 75 kgf / cm 2 (Example 2), 100kgf / cm 2 (Example 3), 125kgf / cm 2 (Example 4), 150kgf / cm 2 (Example 5), 175kgf / cm 2 A sheet joined body of Examples 2 to 6 was produced in the same manner as in Example 1 except that it was changed to (Example 6).
Further, a sheet joined body of Comparative Example 1 was produced in the same manner as in Example 1 except that the pressure on the glass substrate was 25 cm 2 .

（接合強度評価）
この一端側が溶着された２枚の短冊状試料（シート接合体）の溶着されていない側の端部をそれぞれ引張り試験機のチャックにはさんで１８０度剥離試験を実施し、溶着部の剥離に要した応力を接合強度として測定した。
測定結果を、図４に示す。
この図４にも示されているように、レーザー光照射時における重畳部の圧力が５０ｋｇｆ／ｃｍ2以上となった時点で、溶着部の剥離に必要な応力が急激に増大している。 (Joint strength evaluation)
A 180 degree peel test is carried out by holding the end of the two strip-shaped specimens (sheet joined bodies) welded on one end side of each of the unwelded sides with a chuck of a tensile tester to peel off the welded part. The required stress was measured as the bonding strength.
The measurement results are shown in FIG.
As also shown in FIG. 4, when the pressure of the overlapped portion at the time of laser light irradiation becomes 50 kgf / cm 2 or more, the stress necessary for peeling of the welded portion increases rapidly.

（溶着部の断面観察）
実施例３のシート接合体における溶着部の断面状況ならびに比較例１のシート接合体における溶着部の断面状況を走査型電子顕微鏡（ＳＥＭ）にて観察した。
ＳＥＭによって撮影された写真を図５（実施例３）、図６（比較例１）に示す。
この図５、図６からもわかるように、実施例３のシート接合体には、シート表面どうしが良好に相溶した状態の溶着部が形成されているのに対し、比較例１のシート接合体では表面どうしが十分相溶されていない。
上記接合強度評価結果を示す図４、ならびに、溶着部の断面観察結果を示す図５、図６からも、本発明によれば、表面が樹脂繊維によって紙状または布状に形成されている部材であっても、接合体に優れた接合強度を発揮させうることがわかる。 (Section observation of welded part)
The cross-sectional state of the welded part in the sheet joined body of Example 3 and the cross-sectional state of the welded part in the sheet joined body of Comparative Example 1 were observed with a scanning electron microscope (SEM).
Photographs taken by SEM are shown in FIG. 5 (Example 3) and FIG. 6 (Comparative Example 1).
As can be seen from FIGS. 5 and 6, the sheet joined body of Example 3 is formed with a welded portion in which the sheet surfaces are well mixed with each other, whereas the sheet joined body of Comparative Example 1 is formed. In the body, the surfaces are not sufficiently compatible with each other.
According to the present invention, FIG. 4 showing the bonding strength evaluation result and FIG. 5 and FIG. 6 showing the cross-sectional observation result of the welded portion, the member whose surface is formed into a paper shape or a cloth shape by the resin fiber. Even so, it can be seen that the bonded body can exhibit excellent bonding strength.

（実施例７、比較例２）
積層シートに代えて、アラミド紙（５５μｍ厚さ：「デュポン社製、商品名“ノーメックスペーパー”」）のみを用いたことを除き、実施例３（圧力：１００ｋｇｆ／ｃｍ2）と同様にして実施例７のシート接合体を作製した。
また、圧力を１００ｋｇｆ／ｃｍ2に代えて３０ｋｇｆ／ｃｍ2としたしたこと以外は、上記実施例７と同様にしてシート接合体を作製した。
この実施例７、比較例２のシート接合体を、実施例１〜６、比較例１と同様に接合強度評価を実施したところ、実施例７のシート接合体の接合強度（溶着部の剥離に必要な応力）は、６Ｎ以上であり、比較例２のシート接合体の接合強度は３Ｎ以下であることが確認された。
このことからも本発明によれば、表面が樹脂繊維によって紙状または布状に形成されている部材であっても、接合体に優れた接合強度を発揮させうることがわかる。 (Example 7, Comparative Example 2)
Implemented in the same manner as in Example 3 (pressure: 100 kgf / cm 2 ) except that only the aramid paper (55 μm thickness: “DuPont's product name“ Nomex Paper ””) was used instead of the laminated sheet. The sheet joined body of Example 7 was produced.
Further, a sheet joined body was produced in the same manner as in Example 7 except that the pressure was changed to 30 kgf / cm 2 instead of 100 kgf / cm 2 .
When the joint strength of the sheet joined body of Example 7 and Comparative Example 2 was evaluated in the same manner as in Examples 1 to 6 and Comparative Example 1, the joint strength of the sheet joined body of Example 7 (for peeling the welded portion) Necessary stress) was 6N or more, and it was confirmed that the joint strength of the sheet joined body of Comparative Example 2 was 3N or less.
This also shows that according to the present invention, even when the surface is a member formed of resin fibers in a paper shape or a cloth shape, the bonded body can exhibit excellent bonding strength.

一実施形態のシート接合体を示す部分断面図。The fragmentary sectional view showing the sheet zygote of one embodiment. シート接合体に用いられる積層シートの構造を示す断面図。Sectional drawing which shows the structure of the lamination sheet used for a sheet joined body. レーザー光によりシート接合体を形成（溶着）させる様子を示した概略断面図。The schematic sectional drawing which showed a mode that a sheet | seat assembly was formed (welding) with a laser beam. 接合強度測定グラフ。Bond strength measurement graph. 実施例３のシート接合体溶着部の断面ＳＥＭ写真。FIG. 4 is a cross-sectional SEM photograph of a welded part of a sheet joined body of Example 3. FIG. 比較例１のシート接合体溶着部の断面ＳＥＭ写真。The cross-sectional SEM photograph of the sheet | seat joined_body | zygote weld part of Comparative Example 1.

符号の説明Explanation of symbols

１：積層シート、４：アラミド紙、１０：接合部、１０ａ：重畳部、２０：溶着部、Ｇ：ガラス基板、Ｒ：レーザー光、Ｔ：ＸＹテーブル   1: Laminated sheet, 4: Aramid paper, 10: Bonding part, 10a: Superposition part, 20: Welding part, G: Glass substrate, R: Laser light, T: XY table

Claims (2)

少なくとも表面が樹脂繊維によって紙状または布状に形成されている部材を用い、前記表面どうしを溶着させて接合する部材接合方法であって、
前記樹脂繊維は、芳香族ポリアミド繊維であり、
前記芳香族ポリアミドは、ｍ−フェニレンジアミンとイソフタル酸クロリドが共縮重合されてなる芳香族ポリアミドであり、
前記部材の表面どうしを面接させ、該面接されている箇所の前記部材の背面側から前記面接されている表面側にレーザー光を透過させて前記表面の樹脂繊維を加熱溶融させることにより前記表面どうしを溶着し、しかも、その際に前記表面が面接されている箇所を５０ｋｇｆ／ｃｍ2以上の圧力で加圧しつつ前記レーザー光を照射して前記表面どうしを溶着することを特徴とする部材接合方法。 A member joining method in which at least the surface is formed into a paper-like or cloth-like shape with resin fibers, and the surfaces are welded to join each other,
The resin fiber is an aromatic polyamide fiber,
The aromatic polyamide is an aromatic polyamide obtained by co-condensation polymerization of m-phenylenediamine and isophthalic acid chloride,
The surfaces of the members are in contact with each other, and the surfaces of the members are heated and melted by transmitting laser light from the back surface side of the members in the contacted area to the surface side of the surface contacted. And joining the surfaces by irradiating the laser beam while pressurizing at a pressure of 50 kgf / cm 2 or more at the portion where the surfaces are in contact with each other . 少なくとも表面が樹脂繊維によって紙状または布状に形成されているシート部材の前記表面どうしが溶着されて接合されているシート接合体の製造方法であって、
前記樹脂繊維は、芳香族ポリアミド繊維であり、
前記芳香族ポリアミドは、ｍ−フェニレンジアミンとイソフタル酸クロリドが共縮重合されてなる芳香族ポリアミドであり、
前記シート部材の表面どうしを面接させ、該面接されている箇所の前記シート部材の背面側から前記面接されている表面側にレーザー光を透過させて前記表面の樹脂繊維を加熱溶融させることにより前記表面どうしを溶着し、しかも、その際に前記表面が面接されている箇所を５０ｋｇｆ／ｃｍ2以上の圧力で加圧しつつ前記レーザー光を照射して前記表面どうしを溶着することを特徴とするシート接合体の製造方法。 A method for producing a sheet joined body in which at least the surfaces of the sheet member formed of resin fibers in a paper or cloth shape are welded and joined together,
The resin fiber is an aromatic polyamide fiber,
The aromatic polyamide is an aromatic polyamide obtained by co-condensation polymerization of m-phenylenediamine and isophthalic acid chloride,
The surfaces of the sheet members are in contact with each other, and the resin fibers on the surface are heated and melted by transmitting laser light from the back surface side of the sheet members at the contacted portions to the surface side of the surface contact. A sheet characterized in that the surfaces are welded together, and the surfaces are welded by irradiating the laser beam while pressurizing a portion where the surfaces are in contact at a pressure of 50 kgf / cm 2 or more. Manufacturing method of joined body.
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