JP2011189663A - Method for joining sheet members, and joined sheet body - Google Patents

Method for joining sheet members, and joined sheet body Download PDF

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Publication number
JP2011189663A
JP2011189663A JP2010058876A JP2010058876A JP2011189663A JP 2011189663 A JP2011189663 A JP 2011189663A JP 2010058876 A JP2010058876 A JP 2010058876A JP 2010058876 A JP2010058876 A JP 2010058876A JP 2011189663 A JP2011189663 A JP 2011189663A
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Prior art keywords
sheet
sheet member
connecting member
joining
joined
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JP2010058876A
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Japanese (ja)
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JP5608395B2 (en
Inventor
Mayu Shimoda
麻由 下田
Naoyuki Matsuo
直之 松尾
ryuta Kibe
龍太 木部
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Nitto Denko Corp
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Nitto Denko Corp
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    • 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
    • B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour laser 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
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams making use of an absorber or impact modifier placed at 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/73—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
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7316—Surface properties
    • B29C66/73161—Roughness or rugosity
    • 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
    • B29C66/73—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
    • B29C66/7394—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 thermoset
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for joining sheet members which joins the same satisfactorily using a laser beam even when the sheet members of different kinds of thermoplastic resins and a join member are joined to each other or even when the sheet members one of which is composed of a non-melting resin such as a thermosetting resin and the join member are joined to each other, and to provide a joined sheet body. <P>SOLUTION: In the method for joining the sheet members 10 and 20 by joining the ends 11 and 12 of the sheet members 10 and 20 via the join member 30, either one of the sheet members 10 and 20 and the join member 30 is composed of a thermoplastic resin having a storage modulus (E') of less than 1.0×10<SP>6</SP>Pa at 170°C. The sheet members 10 and 20 and the join member 30 are brought into contact with each other, and a laser beam R is irradiated on the contact part to join them. The contact angle at the laser beam R radiation part of the sheet members 10 and 20 and the join member 30 is less than 100 degrees. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、シート部材の接合方法及びシート接合体に関する。   The present invention relates to a sheet member bonding method and a sheet bonded body.

従来、例えば、２枚のシート部材を接合して一枚のシート接合体としたり、あるいは、一枚のシート部材の一端部と他端部とを接合して筒状のシート接合体を形成させたりすることが行われている。
このようなシート部材の接合方法としては、粘着テープを用いて接合する方法、接着剤を用いて接合する方法などが採用されている。
しかしながら、粘着テープを用いる方法に於いては、粘着テープからはみ出した粘着剤が周辺の機器や部材に付着したり、はみ出した粘着剤にホコリ等が付着して美観を低下させたりするという問題がある。
また、接着剤を用いて接着する方法に於いては、接着剤を硬化させるために時間を要することから、リードタイムが長く生産性が悪くなるという問題がある。 Conventionally, for example, two sheet members are joined to form a single sheet joined body, or one end and the other end of one sheet member are joined to form a tubular sheet joined body. Has been done.
As a method for joining such sheet members, a method of joining using an adhesive tape, a method of joining using an adhesive, and the like are employed.
However, in the method using the adhesive tape, there is a problem that the adhesive protruding from the adhesive tape adheres to peripheral devices and members, or dust or the like adheres to the protruding adhesive and deteriorates the aesthetic appearance. is there.
Further, in the method of bonding using an adhesive, since it takes time to cure the adhesive, there is a problem that the lead time is long and the productivity is deteriorated.

これに対して、下記特許文献１には、接合される各シート部材につなぎ部材を当接させ、その当接部分にレーザー光を照射することにより、つなぎ部材を介してシート部材同士を接合させる方法が提案されている。
斯かる方法によれば、上述の如く粘着剤に起因した美観の低下や接着剤に起因した生産性の低下は防止されるものとなる。 On the other hand, in the following Patent Document 1, the connecting member is brought into contact with each sheet member to be joined, and the contact member is irradiated with laser light to join the sheet members through the joining member. A method has been proposed.
According to such a method, as described above, a decrease in aesthetics due to the pressure-sensitive adhesive and a decrease in productivity due to the adhesive can be prevented.

しかしながら、斯かる方法に於いては、異種のつなぎ部材とシート部材同士を接合する場合には、異種の熱可塑性樹脂が多くの場合相溶しないため接合が困難であり、更に、つなぎ部材及びシート部材の一方が熱硬化性樹脂によって構成されている場合には、熱硬化性樹脂が加熱によって溶けることがないため、接合が困難となる。   However, in such a method, when different types of joining members and sheet members are joined together, it is difficult to join because different types of thermoplastic resins are not compatible with each other. When one of the members is made of a thermosetting resin, the thermosetting resin is not melted by heating, so that joining becomes difficult.

特開２００９−２９８１３６JP 2009-298136 A

本発明は、上記のような問題点に鑑みてなされたもので、異種の熱可塑性樹脂のシート部材及びつなぎ部材を接合する場合や、一方が熱硬化性樹脂のように溶けない樹脂で構成されているシート部材及びつなぎ部材を接合する場合などにおいても、レーザーを用いて良好に接合することができるシート部材の接合方法及び該方法によって接合されたシート接合体を提供することを課題とする。   The present invention has been made in view of the above problems, and is composed of a resin that does not melt, such as a thermosetting resin, when joining different sheet members and connecting members of thermoplastic resin. It is an object of the present invention to provide a method for joining sheet members that can be satisfactorily joined using a laser, and a sheet joined body joined by the method, even when joining the sheet member and the connecting member.

上記課題を解決すべく、本発明は、シート部材の端部同士をつなぎ部材を介して接合するシート部材の接合方法であって、
前記シート部材又はつなぎ部材の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満である熱可塑性樹脂によって構成されてなり、前記シート部材及びつなぎ部材を当接させ当接部分にレーザー光を照射することにより互いに接合し、前記シート部材及びつなぎ部材のレーザー光が照射される部位の接触角は、１００°未満であることを特徴とするシート部材の接合方法を提供する。
本発明に於いては、前記シート部材又はつなぎ部材の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満の低弾性熱可塑性樹脂によって構成されてなり、前記シート部材及びつなぎ部材のレーザー光が照射される部位の接触角は、１００°未満であるところ、斯かる低弾性熱可塑性樹脂がレーザー光の照射によって溶融してアンカー効果にて前記シート部材とつなぎ部材とが接合されることとなる。
従って、異種の熱可塑性樹脂のシート部材及びつなぎ部材を接合する場合や、一方が熱硬化性樹脂のように溶けない樹脂で構成されているシート部材及びつなぎ部材を接合する場合などにおいても、レーザーを用いて良好に接合することができる。 In order to solve the above problems, the present invention is a sheet member joining method for joining the end portions of a sheet member via a joining member,
At least one of the sheet member and the connecting member is made of a thermoplastic resin having a storage elastic modulus (E ′) at 170 ° C. of less than 1.0 × 10 6 Pa, and the sheet member and the connecting member The sheet member is bonded to each other by irradiating the abutting portion with a laser beam, and the contact angle of the portion of the sheet member and the connecting member irradiated with the laser beam is less than 100 ° A bonding method is provided.
In the present invention, at least one of the sheet member and the connecting member is composed of a low elastic thermoplastic resin having a storage elastic modulus (E ′) at 170 ° C. of less than 1.0 × 10 6 Pa. The contact angle of the portion irradiated with the laser beam of the sheet member and the connecting member is less than 100 °, and such a low elastic thermoplastic resin is melted by the irradiation of the laser beam and the sheet has an anchor effect. A member and a connection member will be joined.
Therefore, even when joining a sheet member and a joining member of different types of thermoplastic resin, or when joining a sheet member and a joining member made of a resin that is not soluble, such as a thermosetting resin, the laser is used. Can be satisfactorily bonded using.

また、本発明は、シート部材の端部同士がつなぎ部材を介して接合されてなるシート接合体であって、
前記シート部材又はつなぎ部材の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満である熱可塑性樹脂によって構成されてなり、前記シート部材及びつなぎ部材は、当接部分にレーザー光が照射されることにより互いに接合されてなり、前記シート部材及びつなぎ部材のレーザー光が照射される部位の接触角は、１００°未満であることを特徴とするシート接合体を提供する。 Further, the present invention is a sheet joined body in which the end portions of the sheet member are joined together via a connecting member,
At least one of the sheet member and the connecting member is made of a thermoplastic resin having a storage elastic modulus (E ′) at 170 ° C. of less than 1.0 × 10 6 Pa, and the sheet member and the connecting member Are joined to each other by irradiating the contact portion with laser light, and the contact angle of the portion of the sheet member and the connecting member to which the laser light is irradiated is less than 100 °. Provide a joined body.

以上の通り、本発明のシート部材の接合方法によれば、異種の熱可塑性樹脂のシート部材及びつなぎ部材を接合する場合や、一方が熱硬化性樹脂のように溶けない樹脂で構成されているシート部材及びつなぎ部材を接合する場合などにおいても、レーザーを用いて良好に接合することができる。また、本発明のシート接合体は、良好に接合されたものとなる。   As described above, according to the method for joining sheet members of the present invention, when joining a sheet member and a joining member of different types of thermoplastic resin, or one of them is composed of a resin that does not melt like a thermosetting resin. Even in the case where the sheet member and the connecting member are joined, it is possible to favorably join them using a laser. The sheet joined body of the present invention is well joined.

一実施形態のシート接合体の製造方法を示す側面図であり、 （ａ）は準備工程、（ｂ）は接合工程、（ｃ）は取出し工程を示す。It is a side view which shows the manufacturing method of the sheet | seat joined body of one Embodiment, (a) shows a preparation process, (b) shows a joining process, (c) shows a taking-out process. 他実施形態のシート接合体の製造方法を示す側面図であり、 （ａ）は準備工程、（ｂ）は接合工程、（ｃ）は取出し工程を示す。It is a side view which shows the manufacturing method of the sheet | seat joined body of other embodiment, (a) is a preparatory process, (b) is a joining process, (c) shows an extraction process. 実施例１のシート接合体の製造方法を示す側面図。The side view which shows the manufacturing method of the sheet | seat joined body of Example 1. FIG.

以下に、本発明の好ましい実施の形態について図面を参照しつつ説明する。
本実施形態に於けるシート部材の接合方法は、シート部材をつなぎ部材３０を介して接合するシート部材の接合方法であって、前記シート部材又はつなぎ部材３０の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満の低弾性熱可塑性樹脂によって構成されてなり、前記シート部材及びつなぎ部材３０を当接させる準備工程を実施し、次いで、当接部分にレーザー光Ｒを照射することにより互いに軟化し、それによってシート部材を接合する接合工程を実施し、接合工程後にシート接合体１を取り出す取り出し工程を実施するものである。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The joining method of the sheet member in the present embodiment is a joining method of the sheet member that joins the sheet member via the joining member 30, and at least one of the sheet member or the joining member 30 is 170 ° C. The storage elastic modulus (E ′) is made of a low-elasticity thermoplastic resin having a viscosity of less than 1.0 × 10 6 Pa, and a preparatory step for bringing the sheet member and the connecting member 30 into contact is performed. By irradiating the portions with laser light R, they soften each other, thereby performing a joining step for joining the sheet members, and carrying out a taking-out step for taking out the sheet joined body 1 after the joining step.

図１（ａ）〜（ｃ）は、本実施形態に於けるシート部材の接合方法の一例を示す側面図であり、図１（ａ）は、準備工程の一例を示す側面図であり、図１（ｂ）は、接合工程の一例を示す側面図であり、図１（ｃ）は、取出し工程の一例を示す側面図である。
尚、この図１には、第一シート部材１０と第二シート部材２０の２枚のシート部材をつなぎ部材３０を介して接合する具体例が示されている。 1A to 1C are side views showing an example of a method for joining sheet members in the present embodiment, and FIG. 1A is a side view showing an example of a preparation process. 1 (b) is a side view showing an example of the joining step, and FIG. 1 (c) is a side view showing an example of the take-out step.
FIG. 1 shows a specific example in which two sheet members, a first sheet member 10 and a second sheet member 20, are joined via a connecting member 30.

前記準備工程においては、シート部材の端部同士を付き合わせ、付き合わせた端部同士を被覆するようにつなぎ部材３０を各端部に当接させ、互いに圧接するように押圧する。
例えば、図１（ａ）に示すように、平盤状のステージ４０の上面中央部に、第一シート部材１０や第二シート部材２０の端部１１との端部２１とを位置させ、しかも、これら端部同士が突き合わせられた状態となるようにして第一シート部材１０と第二シート部材２０とを配置し、さらに、この第一シート部材１０の端部１１と第二シート部材２０の端部２１とが突き合わせられている箇所の上面側を被覆するように前記つなぎ部材３０を配置させる。
すなわち、第一シート部材１０の端部１１から第二シート部材２０の端部２１に跨るようにしてこれらのシート部材上面に前記つなぎ部材３０を載置する。
このように配置させたつなぎ部材３０の上方に透明ガラス部材５０を配置し、該透明ガラス部材５０を下方側（ステージ４０側）に向けて押圧し、該押圧力によって第一シート部材１０第二シート部材２０及びつなぎ部材３０の位置を固定させる。 In the preparation step, the end portions of the sheet member are attached to each other, and the connecting member 30 is brought into contact with each end portion so as to cover the attached end portions, and pressed so as to be pressed against each other.
For example, as shown in FIG. 1 (a), the end portion 21 of the first sheet member 10 and the end portion 11 of the second sheet member 20 is positioned at the center of the upper surface of the flat plate-like stage 40, and The first sheet member 10 and the second sheet member 20 are arranged so that these end portions are in contact with each other, and the end portion 11 of the first sheet member 10 and the second sheet member 20 The connecting member 30 is arranged so as to cover the upper surface side of the portion where the end 21 is abutted.
That is, the connecting member 30 is placed on the upper surface of these sheet members so as to extend from the end 11 of the first sheet member 10 to the end 21 of the second sheet member 20.
The transparent glass member 50 is arranged above the connecting member 30 arranged in this manner, the transparent glass member 50 is pressed toward the lower side (stage 40 side), and the first sheet member 10 second is pressed by the pressing force. The positions of the sheet member 20 and the connecting member 30 are fixed.

なお、このときつなぎ部材３０の全面へ均一に圧力を加える目的で、透明ガラス部材５０とつなぎ部材３０との間、または、シート部材１０，２０とステージ４０との間の、少なくとも一方に、低硬度で且つ用いるレーザー光Ｒの波長に対して高い光透過性を示す緩衝シート材を挿入することも可能である。
このような緩衝シート材としては、例えば、シリコンラバー、ウレタンラバーなどのゴム系材料やポリエチレンなどの樹脂材料を用いることができ、この緩衝シート材は、常温（例えば２３℃）における硬度（ＪＩＳ Ｋ６２５３に定められたタイプＡデュロメータ硬さ）が、９０°以下であることが好ましく、７０°以下であることがさらに好ましい。
前記緩衝シートの厚みは、５０μｍ以上５ｍｍ未満が好ましく、１ｍｍ以上３ｍｍ未満がさらに好ましい。５０μｍ未満であると、クッション性に乏しく、５ｍｍ以上の場合は、吸収や散乱によってレーザー光Ｒが到達する効率が下がってしまう。緩衝シートは、用いるレーザー光Ｒの波長に対して＞３０％の光透過率を有することが好ましく、＞５０％が更に好ましい。
なお、「光透過率」は、「１００％−“光吸収率（％）”」にて示される値であり、下記式（１）によって求められる値である。
透過光強度÷入射光強度×１００％ ・・・（１）
また、レーザー光Ｒが照射される部分のステージ４０の材質としては、金属、セラミクス、樹脂、ラバーなどが挙げられる。広い面積を均一に加圧して良好な接合状態を得る観点から、ラバーが好ましい。さらに、接合後の部材及びつなぎ部材３０との剥離性を高めるために、ラバー表面が表面処理されていてもよいし、剥離性を高める樹脂部材がラバー上に配置されていてもよい。 At this time, for the purpose of uniformly applying pressure to the entire surface of the connecting member 30, at least one between the transparent glass member 50 and the connecting member 30 or between the sheet members 10, 20 and the stage 40 is low. It is also possible to insert a buffer sheet material that is hard and exhibits high light transmittance with respect to the wavelength of the laser beam R to be used.
As such a buffer sheet material, for example, a rubber-based material such as silicon rubber or urethane rubber, or a resin material such as polyethylene can be used. This buffer sheet material has a hardness (JIS K6253) at normal temperature (for example, 23 ° C.). Is preferably 90 ° or less, and more preferably 70 ° or less.
The thickness of the buffer sheet is preferably 50 μm or more and less than 5 mm, more preferably 1 mm or more and less than 3 mm. If it is less than 50 μm, the cushioning property is poor, and if it is 5 mm or more, the efficiency with which the laser beam R reaches due to absorption or scattering decreases. The buffer sheet preferably has a light transmittance of> 30% with respect to the wavelength of the laser light R to be used, and more preferably> 50%.
The “light transmittance” is a value represented by “100% −“ light absorption rate (%) ””, and is a value obtained by the following equation (1).
Transmitted light intensity ÷ incident light intensity × 100% (1)
Examples of the material of the stage 40 where the laser beam R is irradiated include metal, ceramics, resin, rubber, and the like. Rubber is preferred from the viewpoint of uniformly pressing a large area to obtain a good bonded state. Furthermore, in order to improve the peelability between the joined member and the connecting member 30, the rubber surface may be surface-treated, or a resin member that enhances the peelability may be disposed on the rubber.

前記接合工程においては、シート部材とつなぎ部材３０とを当接させ、更に互いに圧接しつつ当接部分にレーザー光Ｒを照射することにより互いに軟化し、それによってシート部材を接合する。
例えば、図１（ｂ）に示すように、前記透明ガラス部材５０での前記つなぎ部材３０への押圧を維持しつつ、つなぎ部材３０が第一シート部材１０の端部１１と第二シート部材２０の端部２１とを被覆している箇所に向けて透明ガラス部材５０の上方側からレーザー光Ｒを照射する。
そして、照射したレーザー光Ｒを透明ガラス部材５０を通過させ、つなぎ部材３０と第一シート部材１０とが当接している界面、及び、つなぎ部材３０と第二シート部材２０とが当接している界面に到達させ、主としてこの当接界面で照射したレーザー光Ｒを吸収させて光エネルギーを熱エネルギーに変換し、つなぎ部材３０と第一シート部材１０との接合、及びつなぎ部材３０と第二シート部材２０との接合を実施する。
なお、シート部材とつなぎ部材３０との当接界面におけるレーザー光Ｒの吸収が不十分となることが予測されるようであれば、レーザー光Ｒを効率良く吸収して熱を発生させる目的として、予めシート部材とつなぎ部材３０との当接界面に染料、顔料、カーボンブラックといった光吸収剤を配し、光吸収性（発熱性）を向上させておくことも可能である。
この当接界面に光吸収剤を配する態様としては、有機溶媒などで希釈して、シート部材やつなぎ部材３０の表面に塗布する方法や、光吸収剤を含有させたつなぎ部材３０を用いて、シート部材とつなぎ部材３０との当接界面に光吸収剤を存在させる方法が挙げられる。 In the joining step, the sheet member and the connecting member 30 are brought into contact with each other, and further, the contact portions are irradiated with laser light R while being pressed against each other, thereby softening each other, thereby joining the sheet member.
For example, as shown in FIG. 1B, the connecting member 30 is connected to the end portion 11 of the first sheet member 10 and the second sheet member 20 while maintaining the pressing of the connecting member 30 with the transparent glass member 50. The laser beam R is irradiated from the upper side of the transparent glass member 50 toward the portion covering the end portion 21 of the transparent glass member 50.
And the irradiated laser beam R is allowed to pass through the transparent glass member 50, the interface where the connecting member 30 and the first sheet member 10 are in contact, and the connecting member 30 and the second sheet member 20 are in contact. It reaches the interface, absorbs the laser light R irradiated mainly at the contact interface, converts the light energy into heat energy, joins the connecting member 30 and the first sheet member 10, and connects the connecting member 30 and the second sheet. Bonding with the member 20 is performed.
If it is predicted that the absorption of the laser beam R at the contact interface between the sheet member and the connecting member 30 will be insufficient, the purpose of efficiently absorbing the laser beam R and generating heat is as follows: It is also possible to improve the light absorption (heat generation) by previously arranging a light absorber such as a dye, pigment, or carbon black at the contact interface between the sheet member and the connecting member 30.
As a mode of disposing the light absorber on the contact interface, a method of diluting with an organic solvent and applying to the surface of the sheet member or the connecting member 30, or a connecting member 30 containing the light absorber is used. There is a method in which a light absorber is present at the contact interface between the sheet member and the connecting member 30.

この接合工程における前記レーザー光Ｒの照射方法については、特に限定されるものではなく、例えば、所望の接合箇所において、集光レンズによって所望のビームサイズに集光されたスポットビームを所定の速度で走査させる方法を採用することができる。
また、ガルバノスキャナーによってレーザーヘッドを固定した状態でビームを走査照射する方法や、接合面に沿ってレーザー光源を複数配置して、無走査によって一括して照射する方法も採用できる。更に、スループットを向上させる目的で、部材の表裏面からレーザー光Ｒを照射することも可能である。
本実施形態に於いては、レーザー照射された前記低弾性熱可塑性樹脂が軟化し、密着及びアンカー効果による接合を行うため、部材間ギャップ以上の照射巾でレーザー光Ｒを照射すれば、良好な接合が可能となる。 The method for irradiating the laser beam R in this joining step is not particularly limited. For example, a spot beam condensed to a desired beam size by a condenser lens at a desired joining location at a predetermined speed. A scanning method can be employed.
In addition, a method of scanning and irradiating a beam with a laser head fixed by a galvano scanner, or a method of irradiating a plurality of laser light sources along a bonding surface and irradiating all at once without scanning can be employed. Further, for the purpose of improving the throughput, it is possible to irradiate the laser beam R from the front and back surfaces of the member.
In the present embodiment, the low-elasticity thermoplastic resin irradiated with the laser is softened and bonded by adhesion and an anchor effect. Therefore, if the laser beam R is irradiated with an irradiation width equal to or greater than the gap between the members, it is preferable. Joining is possible.

レーザー光Ｒの照射時における前記透明ガラス部材５０による押圧は、シート部材とつなぎ部材３０との接合強度を向上させるべく実施するものであり、つなぎ部材３０、シート部材の材質や、レーザー光Ｒの照射強度などにもよるが、０．５ｋｇｆ／ｃｍ2以上１００ｋｇｆ／ｃｍ2以下のいずれかの圧力がつなぎ部材３０又はシート部材に加えられるように実施されることが好ましく、１ｋｇｆ／ｃｍ2以上５０ｋｇｆ／ｃｍ2以下のいずれかの圧力とされることがさらに好ましい。 The pressing by the transparent glass member 50 at the time of irradiation with the laser beam R is performed in order to improve the bonding strength between the sheet member and the connecting member 30. The material of the connecting member 30, the sheet member, and the laser beam R Although it depends on the irradiation intensity, it is preferable that the pressure is applied so that any pressure of 0.5 kgf / cm 2 or more and 100 kgf / cm 2 or less is applied to the connecting member 30 or the sheet member, and 1 kgf / cm 2 or more and 50 kgf. More preferably, the pressure is any one of / cm 2 or less.

前記取出し工程においては、接合工程にて製造されたシート接合体１を接合装置から取り出す。例えば、図１（ｃ）においては、必要に応じて接合部等の冷却を実施した後に、透明ガラス部材５０の押圧を解除してシート接合体１の取り出しを実施する。
なお、この図１（ａ）〜（ｃ）においては、第一シート部材１０の端部１１と第二シート部材２０の端部２１とが突き合わせられている箇所をレーザー光Ｒが照射される表側（上側）から被覆する場合を例示しているが、例えば、図２（ａ）〜（ｃ）に記載されているように、第一シート部材１０の端部１１と第二シート部材２０の端部２１とが突き合わせられている箇所を裏側（下側）から被覆させる場合も本発明の意図する範囲である。
また、この図２に示すような態様においても、緩衝シート材や光吸収剤の使用が可能である。 In the take-out step, the sheet joined body 1 manufactured in the joining step is taken out from the joining device. For example, in FIG.1 (c), after cooling a junction part etc. as needed, the press of the transparent glass member 50 is cancelled | released and the sheet | seat joined body 1 is taken out.
1A to 1C, the front side on which the laser beam R is irradiated at a position where the end portion 11 of the first sheet member 10 and the end portion 21 of the second sheet member 20 are abutted with each other. Although the case where it coat | covers from (upper side) is illustrated, as FIG. 2 (a)-(c) describes, for example, the edge part 11 of the 1st sheet member 10 and the edge of the 2nd sheet member 20 The case where the portion where the portion 21 is abutted is covered from the back side (lower side) is also within the intended range of the present invention.
Also in the embodiment as shown in FIG. 2, a buffer sheet material or a light absorber can be used.

さらには、この図１、図２においては、第一シート部材１０と第二シート部材２０の一面側にのみつなぎ部材３０が接合されている片面接合のシート接合体１を作製することが図示されているが、例えば、第一シート部材１０の端部１１と第二シート部材２０の端部２１とが突き合わせられている箇所の両面につなぎ部材３０を接合させて両面接合されたシート接合体１を上記と同様にして作製することも可能である。
この場合には、例えば、上記に示した一連の工程で一面側につなぎ部材３０を軟化させて片面接合が行われたシート接合体１を一旦作製した後に、他面側に新たなつなぎ部材３０を接合させる方法などを採用することができる。 Further, in FIGS. 1 and 2, it is illustrated that the single-side bonded sheet joined body 1 in which the connecting member 30 is joined only on one surface side of the first sheet member 10 and the second sheet member 20 is illustrated. However, for example, the joined sheet 1 is bonded on both sides by joining the connecting member 30 to both sides where the end 11 of the first sheet member 10 and the end 21 of the second sheet member 20 are abutted. Can be produced in the same manner as described above.
In this case, for example, after the connecting member 30 is softened on one side in the series of steps described above and the sheet joined body 1 that has been single-sided bonded is once manufactured, a new connecting member 30 is formed on the other side. It is possible to employ a method of joining the two.

このような方法としては、例えば、図１（ａ）〜（ｃ）に示すような方法によって片面接合されたシート接合体１を、接合されたつなぎ部材３０が下面側となるようにして前記ステージ４０上に載置し、新たなつなぎ部材３０をシート部材の突き合わせ箇所に配置して前記接合工程と同様にこの新たなつなぎ部材３０の接合を実施する方法などが挙げられる。
また、例えば、図２（ａ）〜（ｃ）に示すような方法によって下面側の片面接合がされたシート接合体１の突き合わせ箇所に新たなつなぎ部材３０を上面側から被覆させて図１（ａ）〜（ｃ）と同様にこの新たなつなぎ部材３０の接合を実施する方法などが挙げられる。 As such a method, for example, the sheet bonded body 1 bonded on one side by a method as shown in FIGS. 1A to 1C is used as the stage with the bonded connecting member 30 on the lower surface side. And a method of placing the new joining member 30 at the position where the sheet member is abutted and performing joining of the new joining member 30 in the same manner as the joining step.
Further, for example, a new connecting member 30 is covered from the upper surface side at the abutting portion of the sheet bonded body 1 which has been bonded on the lower surface side by the method shown in FIGS. 2 (a) to 2 (c). The method etc. which implement joining of this new connecting member 30 similarly to a)-(c) are mentioned.

本実施形態に於いて、前記第一シート部材１０や第二シート部材２０などのシート部材及びつなぎ部材３０の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満の低弾性熱可塑性樹脂によって構成されてなる。
即ち、シート部材及びつなぎ部材３０の双方又は何れか一方は、前記低弾性熱可塑性樹脂によって構成されてなる。
ここで、本明細書において、シート部材が前記低弾性熱可塑性樹脂によって構成されてなるとは、シート部材のつなぎ部材３０に当接する部分が前記低弾性熱可塑性樹脂によって形成されていればよく、必ずしもシート部材全体が前記低弾性熱可塑性樹脂によって構成されていることは要しない。同様に、つなぎ部材３０が前記低弾性熱可塑性樹脂によって構成されてなるとは、シート部材に当接する部分が前記低弾性熱可塑性樹脂によって形成されていればよく、必ずしもつなぎ部材３０全体が前記低弾性熱可塑性樹脂によって構成されていることは要しない。
尚、本実施形態に於いては、シート部材が複数の場合であって、つなぎ部材３０が前記低弾性熱可塑性樹脂でない場合には、接合される全てのシート部材が前記低弾性熱可塑性樹脂で構成されていることを要する。 In the present embodiment, at least one of the sheet member such as the first sheet member 10 and the second sheet member 20 and the connecting member 30 has a storage elastic modulus (E ′) at 170 ° C. of 1.0 ×. It is composed of a low elastic thermoplastic resin of less than 10 6 Pa.
That is, both or any one of the sheet member and the connecting member 30 is made of the low-elasticity thermoplastic resin.
Here, in the present specification, the fact that the sheet member is made of the low-elasticity thermoplastic resin is not limited as long as the portion of the sheet member that contacts the connecting member 30 is formed of the low-elasticity thermoplastic resin. It is not necessary that the entire sheet member is made of the low-elasticity thermoplastic resin. Similarly, the connecting member 30 is composed of the low-elasticity thermoplastic resin as long as the portion in contact with the sheet member is formed of the low-elasticity thermoplastic resin, and the entire connecting member 30 is not necessarily limited to the low-elasticity resin. It is not necessary to be constituted by a thermoplastic resin.
In the present embodiment, when there are a plurality of sheet members and the connecting member 30 is not the low elastic thermoplastic resin, all the sheet members to be joined are made of the low elastic thermoplastic resin. It needs to be configured.

本発明において１７０℃での貯蔵弾性率（Ｅ’）は、ＴＡ Ｉｎｓｔｒｕｍｅｎｔｓ社製のＲＳＡIIIを用いて測定したものを意味する。
斯かる装置を用いることによって、試料である試験片に定常的な正弦波ひずみを与え、応答応力を測定し、１７０℃での貯蔵弾性率（Ｅ’）を求める。
この測定では、具体的な条件として、周波数１Ｈｚ、昇温温度１０℃／ｍｉｎ、測定温度範囲としては室温〜４００℃の条件下で行い、１７０℃での貯蔵弾性率（Ｅ’）を求める。
また、測定には、一対の引張治具を用い、治具間の距離は２２．５ｍｍとする。測定時の試料形態は１０ｍｍ幅とし、試料長さは治具間距離の２２．５ｍｍ以上とし、治具で良好に挟んで引張試験できる長さであれば特に問わない。 In the present invention, the storage elastic modulus (E ′) at 170 ° C. means that measured using RS Instruments III manufactured by TA Instruments.
By using such an apparatus, a stationary sine wave distortion is applied to a test piece as a sample, a response stress is measured, and a storage elastic modulus (E ′) at 170 ° C. is obtained.
In this measurement, as specific conditions, the frequency is 1 Hz, the temperature rise temperature is 10 ° C./min, and the measurement temperature range is room temperature to 400 ° C., and the storage elastic modulus (E ′) at 170 ° C. is obtained.
In addition, a pair of tension jigs is used for the measurement, and the distance between the jigs is 22.5 mm. The sample form at the time of measurement is not particularly limited as long as the width is 10 mm, the sample length is 22.5 mm or more of the distance between the jigs, and the length can be satisfactorily sandwiched between the jigs.

本実施形態に於いて、第一シート部材１０及び第二シート部材２０等のシート部材は、その材質が特に限定されるものではなく、単層構造、積層構造などといったシートの構成についても特に限定されるものではない。   In the present embodiment, the material of the sheet members such as the first sheet member 10 and the second sheet member 20 is not particularly limited, and the structure of the sheet such as a single layer structure or a laminated structure is also particularly limited. Is not to be done.

これらのシート部材としては、高分子樹脂で構成されてなるものが好ましく、例えばトリアセチルセルロース、ポリオレフィン（例えば、ポリプロピレン、ポリエチレン）、ポリエチレンテレフタレート、ポリカーボネート、ポリスチレン、シクロオレフィンポリマー、ポリビニルアルコール、ポリエチレンナフタレート、ポリメタクリル酸メチル、ポリウレタン、ポリブタジエン、ポリアセタール、フェノール樹脂、エポキシ樹脂、メラミン樹脂、尿素樹脂、アルキド樹脂、ポリイミドなどのを用いることができる。
但し、つなぎ部材３０が前記低弾性熱可塑性樹脂によって構成されていない場合においては、全てのシート部材は、前記低弾性熱可塑性樹脂によって構成されてなることを要する。
尚、前記シート部材が、前記低弾性熱可塑性樹脂によって構成されていない場合に於いては、優れたアンカー効果を得る観点から、つなぎ部材３０が接合される表面は粗化されていることが好ましい。 These sheet members are preferably composed of a polymer resin, for example, triacetyl cellulose, polyolefin (eg, polypropylene, polyethylene), polyethylene terephthalate, polycarbonate, polystyrene, cycloolefin polymer, polyvinyl alcohol, polyethylene naphthalate. Polymethyl methacrylate, polyurethane, polybutadiene, polyacetal, phenol resin, epoxy resin, melamine resin, urea resin, alkyd resin, polyimide, and the like can be used.
However, when the connecting member 30 is not composed of the low elastic thermoplastic resin, all the sheet members are required to be composed of the low elastic thermoplastic resin.
In the case where the sheet member is not composed of the low-elasticity thermoplastic resin, the surface to which the connecting member 30 is joined is preferably roughened from the viewpoint of obtaining an excellent anchor effect. .

また、前記シート部材として、つなぎ部材３０が接合される側の表面に金属材料で形成された金属層が設けられ、熱可塑性樹脂が用いられてなる樹脂層が前記金属層の背面側に設けられている積層シートを採用した場合には、つなぎ部材３０に用いられている低弾性熱可塑性樹脂がレーザーによって軟化されて前記金属層に接合されることでアンカー効果による優れた接合強度が発揮され得るとともに、金属材料の優れた熱伝導性によって樹脂層の熱可塑性樹脂を軟化させることができ、この軟化された樹脂層の熱可塑性樹脂によってシート部材の背面側ならびに端面における接合が実施されるという優れた効果が発揮される。   Further, as the sheet member, a metal layer formed of a metal material is provided on the surface to which the connecting member 30 is bonded, and a resin layer using a thermoplastic resin is provided on the back side of the metal layer. When the laminated sheet is used, the low elastic thermoplastic resin used for the connecting member 30 is softened by the laser and joined to the metal layer, so that excellent joint strength due to the anchor effect can be exhibited. In addition, the thermoplastic resin of the resin layer can be softened by the excellent thermal conductivity of the metal material, and the bonding on the back side and the end face of the sheet member is performed by the thermoplastic resin of the softened resin layer. The effect is demonstrated.

また、前記シート部材の厚みは、１μｍ以上２ｍｍ以下が好ましく、１０μｍ以上２００μｍ以下の厚みを有するものが好ましい。   Further, the thickness of the sheet member is preferably 1 μm or more and 2 mm or less, and preferably has a thickness of 10 μm or more and 200 μm or less.

前記シート部材のレーザー光Ｒが照射される部位は、水に対する接触角が１００°未満であり、９０°未満を有するものが好ましい。
水に対する接触角がこの範囲であれば、撥水性が低く、つなぎ部材３０との接合性がより良好となる。シート部材の表面は、レーザー照射部位を予め低接触角化させるような前処理がされていても良い。このような前処理としては、例えば、コロナ処理、プラズマ処理、薬液による官能基修飾、表面研磨などの一般的な表面処理技術を用いることができる。
ここで、本発明において接触角は、ＪＩＳ Ｒ３２５７の静置法に準拠して、蒸留水１μＬに対する接触角を室温下で測定したものを意味する。 The part irradiated with the laser beam R of the sheet member has a contact angle with respect to water of less than 100 ° and preferably less than 90 °.
If the contact angle with respect to water is within this range, the water repellency is low, and the bondability with the connecting member 30 becomes better. The surface of the sheet member may be pretreated so as to reduce the contact angle of the laser irradiation site in advance. As such pretreatment, for example, general surface treatment techniques such as corona treatment, plasma treatment, functional group modification with a chemical solution, and surface polishing can be used.
Here, in this invention, a contact angle means what measured the contact angle with respect to 1 microliters of distilled water at room temperature based on the stationary method of JISR3257.

前記シート部材の接合される枚数は、図１等に於いては、二枚を例示しているが、三枚以上のシート部材を接合してシート接合体１とすることも可能である。
さらには、一枚のシート部材の一端部と他端部とを接合してシート接合体１とすることも可能である。 In FIG. 1 and the like, the number of sheets to be joined is exemplified by two sheets, but three or more sheet members can be joined to form the sheet joined body 1.
Furthermore, the sheet joined body 1 can be formed by joining one end and the other end of one sheet member.

前記つなぎ部材３０としては、樹脂材料で構成されてなるものが好ましく、例えばトリアセチルセルロース、ポリオレフィン（例えば、ポリプロピレン、ポリエチレン）、ポリエチレンテレフタレート、ポリカーボネート、ポリスチレン、シクロオレフィンポリマー、ポリビニルアルコール、ポリエチレンナフタレート、ポリメタクリル酸メチル、ポリウレタン、ポリブタジエン、ポリアセタール、フェノール樹脂、エポキシ樹脂、メラミン樹脂、尿素樹脂、アルキド樹脂、ポリイミドなどを用いることができる。
但し、接合される全てのシート部材が、前記低弾性熱可塑性樹脂によって構成されていない場合に於いては、前記つなぎ部材３０は、前記低弾性熱可塑性樹脂によって構成されてなるものであることを要する。 The connecting member 30 is preferably made of a resin material, such as triacetyl cellulose, polyolefin (for example, polypropylene, polyethylene), polyethylene terephthalate, polycarbonate, polystyrene, cycloolefin polymer, polyvinyl alcohol, polyethylene naphthalate, Polymethyl methacrylate, polyurethane, polybutadiene, polyacetal, phenol resin, epoxy resin, melamine resin, urea resin, alkyd resin, polyimide, and the like can be used.
However, when all the sheet members to be joined are not composed of the low-elasticity thermoplastic resin, the connecting member 30 is composed of the low-elasticity thermoplastic resin. Cost.

前記つなぎ部材３０は、シート部材の上側又は下側へ配置しなければならないため、更には、シート部材との界面へのレーザー光Ｒの透過を容易にさせ得るとともに接合面積の確保が容易である点においてシート状であることが好適であり、その厚みは、１μｍ以上２ｍｍ以下が好ましく、１０μｍ以上２００μｍ以下がより好ましい。   Since the connecting member 30 has to be disposed on the upper side or the lower side of the sheet member, the laser beam R can be easily transmitted to the interface with the sheet member, and the joining area can be easily secured. In terms of point, it is preferably a sheet, and the thickness is preferably 1 μm or more and 2 mm or less, more preferably 10 μm or more and 200 μm or less.

前記つなぎ部材３０のレーザー光Ｒが照射される部位は、水に対する接触角が１００°未満であり、９０°未満を有するものが好ましい。
水に対する接触角がこの範囲であれば、撥水性が低く、シート部材との接合性がより良好となる。つなぎ部材３０の表面は、レーザー照射部位を予め低接触角化させるような前処理がされていても良い。このような前処理としては、例えば、コロナ処理、プラズマ処理、薬液による官能基修飾、表面研磨などの一般的な表面処理技術を用いることができる。 The part to which the laser beam R of the connecting member 30 is irradiated has a contact angle with water of less than 100 ° and preferably less than 90 °.
If the contact angle with respect to water is within this range, the water repellency is low, and the bondability with the sheet member becomes better. The surface of the connecting member 30 may be pretreated so as to reduce the contact angle of the laser irradiation site in advance. As such pretreatment, for example, general surface treatment techniques such as corona treatment, plasma treatment, functional group modification with a chemical solution, and surface polishing can be used.

前記つなぎ部材３０が樹脂材料で構成されている場合に於いては、該樹脂材料には、各種配合剤が含まれていてもよい。配合剤としては、老化防止剤、耐候剤などの機能性薬剤、各種フィラー、顔料などが挙げられる。
なお、要すれば、樹脂材料中に粘着剤を含有させてつなぎ部材３０の表面に粘着性（タック性）を付与したり、つなぎ部材３０の表面に薄い粘着剤層を設けたりしてシート部材への仮接着性を付与させることも可能ではある。但し、粘着剤の付着等の問題を防止し得る点において、樹脂材料中に粘着剤を含有させたり、粘着剤層を接合シートに設けたりしないことが好ましい。
すなわち、シート部材の接合には、粘着剤が用いられていないことが好ましく、前記つなぎ部材３０は、非粘着性のものであることが好ましい。 When the connecting member 30 is made of a resin material, the resin material may contain various compounding agents. Examples of the compounding agent include functional agents such as anti-aging agents and weathering agents, various fillers, and pigments.
In addition, if necessary, a sheet member is obtained by adding an adhesive in the resin material to impart adhesiveness (tackiness) to the surface of the connecting member 30, or providing a thin adhesive layer on the surface of the connecting member 30. It is also possible to impart temporary adhesion to the surface. However, in terms of preventing problems such as adhesion of the pressure-sensitive adhesive, it is preferable not to include a pressure-sensitive adhesive in the resin material or to provide a pressure-sensitive adhesive layer on the bonding sheet.
That is, it is preferable that an adhesive is not used for joining the sheet members, and the connecting member 30 is preferably non-adhesive.

なお、粘着剤としては、スチレン−ブタジエンブロック共重合体やスチレン−イソプレン共重合体のような熱可塑性エラストマーを利用したゴム系粘着剤 、アクリル酸エステル共重合体を主成分とするアクリル系粘着剤 、シリコーンゴムとシリコーン樹脂とを主成分とするシリコーン系粘着剤 、ビニルエーテル系ポリマーを原料とするビニル系粘着剤などが広く用いられており、通常、これらには移行性の高い成分（例えば、低分子量成分等）が多く含有されており、シート接合体１を薬液などに浸漬する工程などが実施されると粘着剤からの低分子量成分の溶出によって薬液を汚染するおそれがあるが、このように粘着剤を用いずに接合されたシート接合体１は、薬液が汚染されるおそれが低く、このことを原因とした用途の制限を防止することができて用途の拡大を図ることができる。   The pressure-sensitive adhesive is a rubber-based pressure-sensitive adhesive using a thermoplastic elastomer such as a styrene-butadiene block copolymer or a styrene-isoprene copolymer, and an acrylic pressure-sensitive adhesive mainly composed of an acrylate copolymer. Silicone adhesives mainly composed of silicone rubber and silicone resin, vinyl adhesives based on vinyl ether polymers, etc. are widely used. Usually, these are components having high migration properties (for example, low A large amount of molecular weight components, etc., and if the step of immersing the sheet joined body 1 in a chemical solution or the like is performed, the chemical solution may be contaminated by the elution of low molecular weight components from the adhesive. The sheet joined body 1 joined without using the adhesive is less likely to contaminate the chemical solution, and prevents the restriction of use due to this. It is possible to increase the use and be Rukoto.

前記透明ガラス部材５０は、通常、接合に用いるレーザー光Ｒに対する透過性能に優れ、接合部材に対する押圧に耐え得る強度を有するものであれば特に限定されるものではない。
また、透明ガラス部材５０の形状は特に限定されず、例えば、平板、円筒、球状のものを使用することができる。
また、要すれば、これらに代えて透明な樹脂によって形成された部材で押圧を実施することも可能である。
前記透明ガラス部材５０の厚みは特に限定されないが、薄すぎると歪みによって良好な加圧ができず、厚すぎるとレーザー光Ｒの利用効率が下がるため、３ｍｍ以上３０ｍｍ未満が好ましく、５ｍｍ以上２０ｍｍ未満が更に好ましい。材質としては、例えば、溶融石英、無アルカリガラス、テンパックス、パイレックス、バイコール、Ｄ２６３、ＯＡ１０、ＡＦ４５などを用いることができる。レーザー光Ｒの利用効率を高めるために、前記透明ガラス部材５０は、用いるレーザー光Ｒの波長に対して高い透明性を有することが好ましく、＞５０％の光透過率が好ましく、＞７０％の光透過率が更に好ましい。 The transparent glass member 50 is not particularly limited as long as it has excellent transmission performance with respect to the laser light R used for bonding and has a strength that can withstand pressing against the bonding member.
Moreover, the shape of the transparent glass member 50 is not specifically limited, For example, a flat plate, a cylinder, and a spherical thing can be used.
Further, if necessary, it is also possible to carry out pressing with a member formed of a transparent resin instead of these.
The thickness of the transparent glass member 50 is not particularly limited, but if it is too thin, good pressure cannot be applied due to strain, and if it is too thick, the utilization efficiency of the laser light R is reduced, and is preferably 3 mm or more and less than 30 mm, preferably 5 mm or more and less than 20 mm. Is more preferable. As a material, for example, fused quartz, non-alkali glass, Tempax, Pyrex, Vycor, D263, OA10, AF45, or the like can be used. In order to increase the utilization efficiency of the laser light R, the transparent glass member 50 preferably has high transparency with respect to the wavelength of the laser light R to be used, preferably has a light transmittance of> 50%, and> 70%. The light transmittance is more preferable.

前記レーザー光Ｒは、光吸収剤によって吸収され、発熱する役割を担うものであり、レーザーの種類は特に限定されない。好ましくは、熱へのエネルギー変換効率が良い波長である可視光域または赤外線域を有する半導体レーザー、ファイバーレーザー、フェムト秒レーザー、ＹＡＧレーザーなどの固体レーザー、ＣＯ2 レーザーなどである。さらに好ましくは、安価で且つ空間的に面内均一なレーザービームが容易に得られる半導体レーザーやファイバーレーザーである。ただし、フェムト秒レーザーやピコ秒レーザーによるプロセスのような多光子吸収過程を経由するプロセスにおいてはその限りではなく、レーザー波長に対する基材の透明性に関係なく、レーザーの焦点位置や投入エネルギーを最適化することにより、接合を達成することが可能である。
また、シート部材やつなぎ部材３０の分解を避け、軟化を促す目的で、瞬間的に高いエネルギーを投入するパルスレーザーよりも連続波のＣＷレーザーのほうが好ましい。レーザーの出力（パワー）、パワー密度、ビーム形状、照射回数、走査速度、照射時間、積算照射量などは、シート部材やつなぎ部材３０の光吸収率といった光学特性や融点、Tｇといった熱特性などの違いに対して適宜最適化されればよい。
レーザー照射によって照射部位の樹脂を軟化させて２つの部材間ギャップを確実に埋めるためには、通常、レーザー光Ｒは、ギャップ値以上の幅に集光照射される。 The laser light R is absorbed by the light absorber and plays a role of generating heat, and the type of laser is not particularly limited. Preferably, a semiconductor laser having a visible light region or an infrared region that has a wavelength with good energy conversion efficiency to heat, a solid laser such as a fiber laser, a femtosecond laser, or a YAG laser, a CO 2 laser, or the like. More preferably, it is a semiconductor laser or a fiber laser that can easily obtain a laser beam that is inexpensive and spatially uniform in the plane. However, this does not apply to processes that pass through a multiphoton absorption process, such as a process using a femtosecond laser or a picosecond laser, and the focal position and input energy of the laser are optimal regardless of the transparency of the substrate with respect to the laser wavelength. By joining, it is possible to achieve joining.
Further, in order to avoid disassembly of the sheet member and the connecting member 30 and to promote softening, a continuous wave CW laser is preferable to a pulse laser in which high energy is instantaneously input. The laser output (power), power density, beam shape, number of irradiations, scanning speed, irradiation time, integrated irradiation amount, and the like include optical characteristics such as the light absorption rate of the sheet member and the connecting member 30, and thermal characteristics such as melting point and Tg. What is necessary is just to optimize suitably with respect to a difference.
In order to soften the resin at the irradiated site by laser irradiation and reliably fill the gap between the two members, the laser beam R is usually focused and irradiated to a width equal to or greater than the gap value.

前記レーザー光Ｒを吸収させるための光吸収剤としては、フタロシアニン系吸収剤、ナフタロシアニン系吸収剤、ポリメチン系吸収剤、ジフェニルメタン系吸収剤、トリフェニルメタン系吸収剤、キノン系吸収剤、アゾ系吸収剤、ジインモニウム塩などを用いることができる。
例えば、８００〜１２００ｎｍの波長を有するレーザー光Ｒを用いる場合、例えば、米国Ｇｅｎｔｅｘ社製の「Ｃｌｅａｒｗｅｌｄ」（商品名）を用いることができる。
光吸収性としては、前記のとおり＞２０％が好ましく、＞３０％が更に好ましい。光吸収剤層が形成される場合に於いては、光吸収剤層の厚みは、用いる材料の特性及び要求される光吸収率を考慮して、適宜最適化されればよい。塗布幅はレーザー照射領域に合わせて適宜最適化されればよい。
これらの光吸収剤を塗布する手段としては、例えばニードルチップディスペンサー、インクジェットプリンター、スクリーン印刷、２流体式、１流体式または超音波式スプレー、スタンパーなどの一般的な手法を用いることができる。 Examples of the light absorber for absorbing the laser light R include phthalocyanine absorbers, naphthalocyanine absorbers, polymethine absorbers, diphenylmethane absorbers, triphenylmethane absorbers, quinone absorbers, and azo absorbers. An absorbent, a diimmonium salt, or the like can be used.
For example, when using the laser beam R having a wavelength of 800 to 1200 nm, for example, “Clearweld” (trade name) manufactured by Gentex, USA can be used.
As described above, the light absorption is preferably> 20%, more preferably> 30%. When the light absorber layer is formed, the thickness of the light absorber layer may be optimized as appropriate in consideration of the characteristics of the material used and the required light absorption rate. The coating width may be optimized as appropriate according to the laser irradiation area.
As means for applying these light absorbers, for example, general techniques such as a needle tip dispenser, an ink jet printer, screen printing, a two-fluid type, a one-fluid type or an ultrasonic spray, a stamper, and the like can be used.

なお、ここでは詳述しないが本発明の効果が著しく損なわれない範囲において、従来公知のシート部材の接合方法、及びシート接合体１にかかる技術事項を本発明のシート部材の接合方法、及びシート接合体１にも採用することが可能である。   Although not described in detail here, the sheet member joining method according to the present invention and the technical matters relating to the sheet joined body 1 according to the related art are known to the extent that the effects of the present invention are not significantly impaired. It is also possible to employ the bonded body 1.

次に実施例を挙げて本発明をさらに詳しく説明するが、本発明はその要旨を超えない限り、以下の実施例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 a following example, unless the summary is exceeded.

（実施例１）
実施例１のシート部材の接合方法における詳細な条件は下記の通りである。
・第一シート部材１０
材質：トリアセチルセルロース（富士フィルム社製、ＴＡＣ）
厚み：８０μｍ
形状：５０ｍｍ×３０ｍｍ
貯蔵弾性率Ｅ’：９．３×１０7 Ｐａ（１７０℃）
接触角：６０°
・第二シート部材２０
第一シート部材１０に同じ
・つなぎ部材３０
材質：ポリメタクリル酸メチル（三菱レイヨン社製、アクリプレン（登録商標））
厚み：４０μｍ
形状：５ｍｍ×３０ｍｍ
貯蔵弾性率Ｅ’：７．３×１０5 Ｐａ（１７０℃）
接触角：８４°
・レーザー光照射装置
レーザー光源：半導体レーザー
波長：９４０ｎｍ
レーザー光スポット径：２ｍｍφ
出力：３０Ｗ
走査速度：１００ｍｍ／ｓ
・光吸収剤６０
種類：Ｃｌｅａｒｗｅｌｄ（登録商標）（Ｇｅｎｔｅｘ社製、ＬＤ１２０Ｃ）
つなぎ部材３０への塗布量 ８．５ｎＬ／ｍｍ2
・加圧
使用部材：透明ガラス部材（溶融石英ガラス製）
圧力：１４．７ｋｇｆ／ｃｍ2
・ステージ４０
シリコンラバー（３ｍｍ厚）の上部にポリイミド（１２５μｍ厚）を配置 Example 1
The detailed conditions in the joining method of the sheet | seat member of Example 1 are as follows.
・ First sheet member 10
Material: Triacetylcellulose (manufactured by Fuji Film, TAC)
Thickness: 80 μm
Shape: 50mm x 30mm
Storage elastic modulus E ′: 9.3 × 10 7 Pa (170 ° C.)
Contact angle: 60 °
・ Second sheet member 20
Same as the first sheet member 10 and the connecting member 30
Material: Polymethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd., Acryprene (registered trademark))
Thickness: 40μm
Shape: 5mm x 30mm
Storage elastic modulus E ′: 7.3 × 10 5 Pa (170 ° C.)
Contact angle: 84 °
・ Laser beam irradiation device
Laser light source: Semiconductor laser
Wavelength: 940nm
Laser spot diameter: 2mmφ
Output: 30W
Scanning speed: 100mm / s
・ Light absorber 60
Type: Clearweld (registered trademark) (Gentex, LD120C)
Application amount to connecting member 30 8.5 nL / mm 2
·Pressurization
Use member: Transparent glass member (product made from fused silica glass)
Pressure: 14.7 kgf / cm 2
・ Stage 40
Polyimide (125 μm thick) is placed on top of silicon rubber (3 mm thick)

上記部材ならびにレーザー光照射装置を用いた実施例１のシート部材の接合方法は、以下の如くで実施した（図３：シート接合体１の製造方法を表す側面図参照）。
まず、上記第一シート部材１０と第二シート部材２０とをその端部どうしを突き合せた状態で上記ステージ４０上に並べ、上記つなぎ部材３０を、この突き合わせられた第一シート部材１０の端部から第二シート部材２０の端部に跨るようにしてこれらのシート部材上に載置した。
すなわち、この幅５ｍｍのつなぎ部材３０が第一シート部材１０の端部と第二シート部材２０の端部の上面をそれぞれ約２．５ｍｍずつ被覆する状態となるように第一シート部材１０と第二シート部材２０との境界線に沿ってつなぎ部材３０を配した。
なお、第一シート部材１０及び第二シート部材２０とつなぎ部材３０との界面にはレーザー光Ｒの吸収性を向上させるべく光吸収剤６０を塗布した。
このようにセットされた第一シート部材１０、第二シート部材２０、及びつなぎ部材３０の上部に透明ガラス部材５０を載置して、つなぎ部材３０に加わる圧力が約１４．７ｋｇｆ／ｃｍ2となるように上記透明ガラス部材５０でつなぎ部材３０を押圧しつつ、このつなぎ部材３０によって被覆されている箇所に出力３０Ｗのレーザー光Ｒを１ライン走査照射した。
このとき直径２ｍｍのレーザー光スポットの中心部が第一シート部材１０と第二シート部材２０との境界線に沿って移動するようにレーザー光Ｒの照射位置を１００ｍｍ／ｓで走査しつなぎ部材３０と第一シート部材１０、及びつなぎ部材３０と第二シート部材２０とを一度に接合させて実施例１のシート接合体１を製造した。
得られたシート接合体１の接合部分の強度としてせん断強度を測定したところ、３６Ｎが得られ、良好な接合性が確認された。
尚、せん断強度は、３０ｍｍ幅の接合サンプルを引張試験機（島津製作所社製）にチャック間距離５０ｍｍでロードセルに固定し、室温下で５０ｍｍ／分の引張速度にて引張試験を行い、接合部若しくはシート部材が破断または剥離した際の値である。 The joining method of the sheet | seat member of Example 1 using the said member and a laser beam irradiation apparatus was implemented as follows (refer FIG. 3: side view showing the manufacturing method of the sheet | seat joined body 1).
First, the first sheet member 10 and the second sheet member 20 are arranged on the stage 40 with their end portions butted together, and the connecting member 30 is placed on the end of the butted first sheet member 10. It was placed on these sheet members so as to straddle the end of the second sheet member 20 from the part.
That is, the connecting member 30 having a width of 5 mm and the first sheet member 10 and the first sheet member 10 so as to cover the upper surface of the end portion of the first sheet member 10 and the upper surface of the end portion of the second sheet member 20 respectively. The connecting member 30 was arranged along the boundary line with the two sheet member 20.
In addition, the light absorber 60 was apply | coated to the interface of the 1st sheet | seat member 10 and the 2nd sheet | seat member 20, and the connection member 30 in order to improve the absorptivity of the laser beam R. FIG.
The transparent glass member 50 is placed on top of the first sheet member 10, the second sheet member 20, and the connecting member 30 set in this manner, and the pressure applied to the connecting member 30 is about 14.7 kgf / cm 2 . While pressing the connecting member 30 with the transparent glass member 50, the laser beam R with an output of 30 W was irradiated to the portion covered with the connecting member 30 by one line scanning.
At this time, the linking member 30 scans the irradiation position of the laser beam R at 100 mm / s so that the center portion of the laser beam spot having a diameter of 2 mm moves along the boundary line between the first sheet member 10 and the second sheet member 20. The first sheet member 10, the connecting member 30, and the second sheet member 20 were joined at a time to produce the sheet joined body 1 of Example 1.
When the shear strength was measured as the strength of the joined portion of the obtained sheet joined body 1, 36N was obtained, and good bondability was confirmed.
As for the shear strength, a 30 mm wide bonded sample was fixed to a load cell with a chuck distance of 50 mm on a tensile tester (manufactured by Shimadzu Corporation), and a tensile test was performed at a tensile speed of 50 mm / min at room temperature. Or the value when the sheet member is broken or peeled off.

（実施例２）
第一シート部材１０、第二シート部材２０を下記条件とした以外は、実施例１と同様にして、実施例２のシート接合体１を製造した。
・第一シート部材１０
材質：ポリスチレン（旭化成ケミカルズ社製、ＯＳＰフィルム（登録商標））
厚み：６０μｍ
形状：５０ｍｍ×３０ｍｍ
貯蔵弾性率Ｅ’：８．６×１０4 Ｐａ（１７０℃）
接触角：８９°
・第二シート部材２０
第一シート部材１０に同じ
得られたシート接合体１の接合部分の強度としてせん断強度を測定したところ、６１Ｎが得られ、良好な接合性が確認された。 (Example 2)
A sheet joined body 1 of Example 2 was manufactured in the same manner as in Example 1 except that the first sheet member 10 and the second sheet member 20 were set to the following conditions.
・ First sheet member 10
Material: Polystyrene (Asahi Kasei Chemicals, OSP film (registered trademark))
Thickness: 60 μm
Shape: 50mm x 30mm
Storage elastic modulus E ′: 8.6 × 10 4 Pa (170 ° C.)
Contact angle: 89 °
・ Second sheet member 20
When the shear strength was measured as the strength of the joined portion of the obtained sheet joined body 1 which was the same as that of the first sheet member 10, 61N was obtained, and good jointability was confirmed.

（実施例３）
つなぎ部材３０を下記条件とした以外は、実施例２と同様にして、実施例３のシート接合体１を製造した。
・つなぎ部材３０
材質：ポリブチレンテレフタレート（ポリプラスチックス社製、ジュラネックス（登録商標））
厚み：５０μｍ
形状：５ｍｍ×３０ｍｍ
貯蔵弾性率Ｅ’：４．４×１０7 Ｐａ（１７０℃）
接触角：８２°
得られたシート接合体１の接合部分の強度としてせん断強度を測定したところ、５５Ｎが得られ、良好な接合性が確認された。 (Example 3)
A sheet joined body 1 of Example 3 was manufactured in the same manner as in Example 2 except that the connecting member 30 was subjected to the following conditions.
・ Connecting member 30
Material: Polybutylene terephthalate (manufactured by Polyplastics, DURANEX (registered trademark))
Thickness: 50 μm
Shape: 5mm x 30mm
Storage elastic modulus E ′: 4.4 × 10 7 Pa (170 ° C.)
Contact angle: 82 °
When the shear strength was measured as the strength of the joined portion of the obtained sheet joined body 1, 55N was obtained, and good joining properties were confirmed.

（比較例１）
実施例３のつなぎ部材３０を用いた以外は、実施例１と同様にして、比較例１のシート接合体１を製造した。
得られたシート接合体１の接合部分の強度としてせん断強度を測定したところ、２２Ｎが得られたが、部材とつなぎ材は軽剥離であり、良好な接合性が確認できなかった。 (Comparative Example 1)
A sheet joined body 1 of Comparative Example 1 was produced in the same manner as in Example 1 except that the connecting member 30 of Example 3 was used.
When the shear strength was measured as the strength of the joined portion of the obtained sheet joined body 1, 22N was obtained, but the member and the binder were lightly peeled, and good jointability could not be confirmed.

（比較例２）
第一シート部材１０、第二シート部材２０を下記条件とした以外は、実施例１と同様にして、比較例２のシート部材の接合方法を実施した。
・第一シート部材１０
材質：ポリメチルペンテンポリマー（三井化学社製、ＴＰＸ（登録商標）フィルム）
厚み：５０μｍ
形状：５０ｍｍ×３０ｍｍ
貯蔵弾性率Ｅ’：３．９×１０7 Ｐａ（１７０℃）
接触角：１１２°
・第二シート部材２０
第一シート部材１０に同じ
シート部材とつなぎ材とが接合せず、良好な接合性が確認できなかった。 (Comparative Example 2)
The joining method of the sheet member of the comparative example 2 was implemented like Example 1 except having made the 1st sheet member 10 and the 2nd sheet member 20 into the following conditions.
・ First sheet member 10
Material: Polymethylpentene polymer (Mitsui Chemicals, TPX (registered trademark) film)
Thickness: 50 μm
Shape: 50mm x 30mm
Storage elastic modulus E ′: 3.9 × 10 7 Pa (170 ° C.)
Contact angle: 112 °
・ Second sheet member 20
The same sheet member and the connecting material were not joined to the first sheet member 10, and good jointability could not be confirmed.

（比較例３）
つなぎ部材３０を下記条件とした以外は、実施例１と同様にして、比較例３のシート接合体１を製造した。
・つなぎ部材３０
材質：シクロオレフィンポリマー（オプテス社製、ＺＥＯＮＯＲ（登録商標）
厚み：７５μｍ
形状：５ｍｍ×３０ｍｍ
貯蔵弾性率Ｅ’：１．３×１０6 Ｐａ（１７０℃）
接触角：９８°
シート部材とつなぎ材とが接合せず、良好な接合性が確認できなかった。 (Comparative Example 3)
A sheet joined body 1 of Comparative Example 3 was produced in the same manner as in Example 1 except that the connecting member 30 was made the following conditions.
・ Connecting member 30
Material: cycloolefin polymer (manufactured by Optes, ZEONOR (registered trademark)
Thickness: 75μm
Shape: 5mm x 30mm
Storage elastic modulus E ′: 1.3 × 10 6 Pa (170 ° C.)
Contact angle: 98 °
The sheet member and the binder were not bonded, and good bonding properties could not be confirmed.

１：シート接合体、１０：第一シート部材、１１：端部、２０：第二シート部材、２１：端部、３０：つなぎ部材３０、４０：ステージ、５０：透明ガラス部材、６０：光吸収剤、Ｒ：レーザー光   1: sheet joined body, 10: first sheet member, 11: end, 20: second sheet member, 21: end, 30: connecting member 30, 40: stage, 50: transparent glass member, 60: light absorption Agent, R: Laser light

Claims (2)

シート部材の端部同士をつなぎ部材を介して接合するシート部材の接合方法であって、
前記シート部材又はつなぎ部材の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満である熱可塑性樹脂によって構成されてなり、前記シート部材及びつなぎ部材を当接させ当接部分にレーザー光を照射することにより互いに接合し、前記シート部材及びつなぎ部材のレーザー光が照射される部位の接触角は、１００°未満であることを特徴とするシート部材の接合方法。 A joining method for a sheet member that joins end portions of the sheet member together via a joining member,
At least one of the sheet member and the connecting member is made of a thermoplastic resin having a storage elastic modulus (E ′) at 170 ° C. of less than 1.0 × 10 6 Pa, and the sheet member and the connecting member The sheet member is bonded to each other by irradiating the abutting portion with a laser beam, and the contact angle of the portion of the sheet member and the connecting member irradiated with the laser beam is less than 100 ° Joining method. シート部材の端部同士がつなぎ部材を介して接合されてなるシート接合体であって、
前記シート部材又はつなぎ部材の少なくとも何れか一方は、１７０℃での貯蔵弾性率（Ｅ’）が１．０×１０6 Ｐａ未満である熱可塑性樹脂によって構成されてなり、前記シート部材及びつなぎ部材は、当接部分にレーザー光が照射されることにより互いに接合されてなり、前記シート部材及びつなぎ部材のレーザー光が照射される部位の接触角は、１００°未満であることを特徴とするシート接合体。 A sheet joined body in which the end portions of the sheet member are joined via a connecting member,
At least one of the sheet member and the connecting member is made of a thermoplastic resin having a storage elastic modulus (E ′) at 170 ° C. of less than 1.0 × 10 6 Pa, and the sheet member and the connecting member Are joined to each other by irradiating the contact portion with laser light, and the contact angle of the portion of the sheet member and the connecting member to which the laser light is irradiated is less than 100 °. Joined body.
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* Cited by examiner, † Cited by third party
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JP2008007584A (en) * 2006-06-28 2008-01-17 Okayama Prefecture Joining method for different kinds of members and joined article of different kinds of members

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