JP2002284895A - Resin molded article - Google Patents

Resin molded article

Info

Publication number
JP2002284895A
JP2002284895A JP2001090597A JP2001090597A JP2002284895A JP 2002284895 A JP2002284895 A JP 2002284895A JP 2001090597 A JP2001090597 A JP 2001090597A JP 2001090597 A JP2001090597 A JP 2001090597A JP 2002284895 A JP2002284895 A JP 2002284895A
Authority
JP
Japan
Prior art keywords
resin material
laser light
transparent
laser
transparent resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001090597A
Other languages
Japanese (ja)
Other versions
JP3610917B2 (en
Inventor
Hideo Nakamura
秀生 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2001090597A priority Critical patent/JP3610917B2/en
Publication of JP2002284895A publication Critical patent/JP2002284895A/en
Application granted granted Critical
Publication of JP3610917B2 publication Critical patent/JP3610917B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B29C65/1603—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
    • 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
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • 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
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—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
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y 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
    • B29C65/1609—Visible light radiation, e.g. by visible light 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/749—Motors
    • B29L2031/7492—Intake manifold

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

Abstract

PROBLEM TO BE SOLVED: To enhance bonding strength by laser welding by permitting more laser light to reach and to be absorbed by the abutting surface of an absorbing resin material even when resin materials less compatible with each other are included in the resin materials constituting a transmitting resin material and an absorbing resin material. SOLUTION: In the resin molded article comprising a transmitting resin material 1 transmitting a laser light as a heat source and an absorbing resin material 2 absorbing the laser light, where the abutting end parts of the transmitting resin material 1 and the absorbing material 2 are bonded by welding by laser light irradiation from the transmitting resin material side, the absorbing resin material 2 is composed of an alloy material comprising a first resin material constituting the transmitting resin material 1 and a second resin material less compatible with the first resin material.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は樹脂成形品に関し、
詳しくは、レーザ光に対して透過性のある透過性樹脂材
と、該レーザ光に対して吸収性のある吸収性樹脂材とを
レーザ溶着により一体的に接合した樹脂成形品に関す
る。The present invention relates to a resin molded product,
More specifically, the present invention relates to a resin molded product in which a transparent resin material that transmits laser light and an absorbent resin material that absorbs the laser light are integrally joined by laser welding.

【０００２】[0002]

【従来の技術】近年、軽量化及び低コスト化等の観点よ
り、自動車部品等、各種分野の部品を樹脂化して樹脂成
形品とすることが頻繁に行われている。また、樹脂成形
品の高生産性化等の観点より、樹脂成形品を予め複数に
分割して成形し、これらの分割成形品を互いに接合する
手段が採られることが多い。2. Description of the Related Art In recent years, from the viewpoints of weight reduction and cost reduction, it has been frequently practiced to convert parts in various fields, such as automobile parts, into resin to obtain a resin molded product. Also, from the viewpoint of increasing the productivity of the resin molded product, a method is often employed in which the resin molded product is divided into a plurality of pieces in advance and molded, and these divided molded articles are joined to each other.

【０００３】ここに、樹脂材同士の接合方法として、従
来よりレーザ溶着方法が利用されている。例えば、特開
昭６０−２１４９３１号公報には、レーザ光に対して透
過性のある透過性樹脂材と、該レーザ光に対して吸収性
のある吸収性樹脂材とを重ね合わせた後、該透過性樹脂
材側からレーザ光を照射することにより、透過性樹脂材
と吸収性樹脂材との当接面同士を加熱溶融させて両者を
一体的に接合するレーザ溶着方法が開示されている。Here, a laser welding method has conventionally been used as a method for joining resin materials. For example, Japanese Patent Application Laid-Open No. Sho 60-214931 discloses that after a transparent resin material that is transparent to laser light and an absorbent resin material that is capable of absorbing the laser light are overlaid, A laser welding method is disclosed in which a laser beam is irradiated from the transparent resin material side to heat and melt the contact surfaces of the transparent resin material and the absorptive resin material so that they are integrally joined.

【０００４】このレーザ溶着方法では、透過性樹脂材内
を透過したレーザ光が吸収性樹脂材の当接面に到達して
吸収され、この当接面に吸収されたレーザ光がエネルギ
ーとして蓄積される。その結果、吸収性樹脂材の当接面
が加熱溶融されるとともに、この吸収性樹脂材の当接面
からの熱伝達により透過性樹脂材の当接面が加熱溶融さ
れる。この状態で、透過性樹脂材及び吸収性樹脂材の当
接面同士を圧着させれば、両者を一体的に接合すること
ができる。In this laser welding method, the laser light transmitted through the transparent resin material reaches the contact surface of the absorbent resin material and is absorbed, and the absorbed laser light is accumulated as energy. You. As a result, the contact surface of the absorbent resin material is heated and melted, and the heat transfer from the contact surface of the absorbent resin material heats and melts the contact surface of the transparent resin material. In this state, if the contact surfaces of the permeable resin material and the absorptive resin material are pressed together, they can be integrally joined.

【０００５】[0005]

【発明が解決しようとする課題】ところで、上記したよ
うなレーザ溶着では、透過性樹脂材及び吸収性樹脂材の
当接面同士を確実に溶着させて十分な接合強度を得るた
めには、吸収性樹脂材の当接面にレーザ光のエネルギー
が十分に吸収される必要があることから、透過性樹脂材
やレーザ光の種類等、具体的には透過性樹脂材のレーザ
光透過率や加熱源として用いるレーザ光の波長等を適切
に設定することにより、吸収性樹脂材の当接面に十分な
量のレーザ光を到達、吸収させることが重要となる。By the way, in the laser welding as described above, in order to ensure that the contact surfaces of the transparent resin material and the absorbent resin material are welded to each other and to obtain a sufficient bonding strength, it is necessary to use an absorbing material. Since the energy of the laser light needs to be sufficiently absorbed by the contact surface of the transparent resin material, the type of the transparent resin material and the laser light, specifically, the laser light transmittance and heating of the transparent resin material By appropriately setting the wavelength and the like of the laser light used as the source, it is important to allow a sufficient amount of the laser light to reach and absorb the contact surface of the absorbent resin material.

【０００６】一方、上記レーザ溶着による樹脂成形品の
接合方法は、互いに相溶性のある樹脂材同士を接合する
ものである。したがって、上記従来のレーザ溶着によっ
ては、互いに相溶性の小さい樹脂材料よりなる樹脂材同
士を良好に接合することができなかった。On the other hand, the above-mentioned method of joining resin molded articles by laser welding is to join mutually compatible resin materials. Therefore, the above-described conventional laser welding cannot satisfactorily join resin materials made of resin materials having low compatibility with each other.

【０００７】そこで、本発明者は、互いに相溶性の小さ
い第１樹脂材料及び第２樹脂材料よりなる樹脂材同士を
レーザ溶着する際の工夫として、一方の樹脂材を第１樹
脂材料で構成するとともに、他方の樹脂材を第１樹脂材
料と第２樹脂材料とからなるアロイ材により構成すると
いう新たな手法に想到した。Therefore, the inventor of the present invention uses one resin material as the first resin material as a device for laser welding resin materials made of the first resin material and the second resin material having low compatibility with each other. At the same time, the present inventors have conceived a new method of forming the other resin material from an alloy material composed of a first resin material and a second resin material.

【０００８】しかし、レーザ光に対して透過性のある透
過性樹脂材側にアロイ材を採用すると、吸収性樹脂材の
当接面に十分な量のレーザ光を到達、吸収させることが
できず、レーザ溶着による十分な接合強度を得ることが
できないという、新たな問題のあることが判った。これ
は、アロイ材の構造によるものと考えられる。すなわ
ち、アロイ材は、一方の樹脂材料が島成分になるととも
に他方の樹脂材料が海成分となる海島構造をなし、島成
分がミクロ（１μｍ以下）に微細分布することで強度や
特性を維持しているが、この島成分の微細分布がレーザ
光の乱反射を招き、レーザ光透過率を低下させているも
のと考えられる。However, if an alloy material is used on the side of the transparent resin material that is permeable to laser light, a sufficient amount of laser light cannot reach and be absorbed at the contact surface of the absorbent resin material. It has been found that there is a new problem that a sufficient bonding strength cannot be obtained by laser welding. This is considered to be due to the structure of the alloy material. That is, the alloy material has a sea-island structure in which one resin material is an island component and the other resin material is a sea component, and the strength and characteristics are maintained by micro-distribution of the island component micro (1 μm or less). However, it is considered that the fine distribution of the island components causes irregular reflection of the laser light, and lowers the laser light transmittance.

【０００９】本発明は上記実情に鑑みてなされたもので
あり、透過性樹脂材及び吸収性樹脂材を構成する樹脂材
料の中に互いに相溶性の小さい樹脂材料同士が含まれて
いても、各樹脂材における樹脂材料の構成の仕方やその
配合割合を工夫することにより、吸収性樹脂材の当接面
により多くのレーザ光を到達、吸収させてレーザ溶着に
よる接合強度を向上させるのに有利となる樹脂成形品を
提供することを解決すべき技術課題とするものである。The present invention has been made in view of the above circumstances, and even if resin materials having low compatibility with each other are contained in the resin materials constituting the permeable resin material and the absorbent resin material, By devising the composition of the resin material in the resin material and the mixing ratio, it is advantageous to improve the bonding strength by laser welding by allowing more laser light to reach and absorb the contact surface of the absorbent resin material. It is a technical problem to be solved to provide such a resin molded product.

【００１０】[0010]

【課題を解決するための手段】（１）請求項１記載の樹
脂成形品は、加熱源としてのレーザ光に対して透過性の
ある透過性樹脂材と、該レーザ光に対して吸収性のある
吸収性樹脂材とからなり、該透過性樹脂材及び該吸収性
樹脂材の当接端部同士が該透過性樹脂材側からの該レー
ザ光の照射により溶着されて接合された樹脂成形品にお
いて、上記吸収性樹脂材が、上記透過性樹脂材を構成す
る第１樹脂材料と、該第１樹脂材料と相溶性の小さい第
２樹脂材料とからなるアロイ材により構成されているこ
とを特徴とするものである。According to a first aspect of the present invention, a resin molded product according to the first aspect includes a transparent resin material that is permeable to a laser beam as a heating source and a resin material that is absorptive to the laser beam. A resin molded product made of a certain absorbent resin material, wherein the transmissive resin material and the abutting ends of the absorbent resin material are welded and joined by irradiation of the laser beam from the transparent resin material side; , Wherein the absorbent resin material is constituted by an alloy material comprising a first resin material constituting the transparent resin material and a second resin material having low compatibility with the first resin material. It is assumed that.

【００１１】（２）請求項２記載の樹脂成形品は、加熱
源としてのレーザ光に対して透過性のある透過性樹脂材
と、該レーザ光に対して吸収性のある吸収性樹脂材とか
らなり、該透過性樹脂材及び該吸収性樹脂材の当接端部
同士が該透過性樹脂材側からの該レーザ光の照射により
溶着されて接合された樹脂成形品において、上記透過性
樹脂材は、第１樹脂材料と、上記吸収性樹脂材を構成
し、該第１樹脂材料と相溶性の小さい第２樹脂材料とか
らなるアロイ材により構成されるとともに、該第１樹脂
材料と該第２樹脂材料との配合割合が、該透過性樹脂材
における上記レーザ光の透過率を２６％以上に確保しう
るように設定されていることを特徴とするものである。(2) The resin molded product according to the second aspect of the present invention comprises a transparent resin material that is permeable to a laser beam as a heating source, and an absorbent resin material that is absorptive to the laser beam. Wherein the abutting ends of the permeable resin material and the absorptive resin material are welded and joined by irradiation of the laser light from the permeable resin material side. The material comprises an alloy material comprising a first resin material and the above-mentioned absorbent resin material, and a second resin material having low compatibility with the first resin material. The mixing ratio with the second resin material is set so that the transmittance of the laser light in the transparent resin material can be secured to 26% or more.

【００１２】[0012]

【発明の実施の形態】本発明の樹脂成形品は、加熱源と
してのレーザ光に対して透過性のある透過性樹脂材と、
該レーザ光に対して吸収性のある吸収性樹脂材とからな
り、該透過性樹脂材及び該吸収性樹脂材の当接端部同士
がレーザ溶着により一体的に接合されている。このレー
ザ溶着は、透過性樹脂材及び吸収性樹脂材の当接端部同
士を当接させた状態で、透過性樹脂材側からレーザ光を
照射することにより行われる。透過性樹脂材側から照射
されたレーザ光は該透過性樹脂材内を透過して吸収性樹
脂材の当接面に到達し、吸収される。この吸収性樹脂材
の当接面に吸収されたレーザ光がエネルギーとして蓄積
される結果、吸収性樹脂材の当接面が加熱溶融されると
ともに、この吸収性樹脂材の当接面からの熱伝達により
透過性樹脂材の当接面が加熱溶融される。この状態で、
透過性樹脂材及び吸収性樹脂材の当接面同士を圧着させ
れば、両者を一体的に接合することができる。BEST MODE FOR CARRYING OUT THE INVENTION A resin molded product according to the present invention comprises:
An absorptive resin material having absorptivity to the laser light is formed, and the abutting ends of the transmissive resin material and the absorptive resin material are integrally joined by laser welding. This laser welding is performed by irradiating a laser beam from the transparent resin material side in a state where the contact ends of the transparent resin material and the absorbent resin material are in contact with each other. The laser light emitted from the transparent resin material side passes through the transparent resin material, reaches the contact surface of the absorbent resin material, and is absorbed. As a result of the laser light absorbed on the contact surface of the absorbent resin material being stored as energy, the contact surface of the absorbent resin material is heated and melted, and the heat from the contact surface of the absorbent resin material is also increased. The contact surface of the transparent resin material is heated and melted by the transmission. In this state,
If the contact surfaces of the permeable resin material and the absorptive resin material are pressed together, they can be integrally joined.

【００１３】こうして得られた接合部では、接合面同士
が溶融されて接合されており、該接合面同士の間では両
成形部材を構成する両樹脂が溶融して互いに入り込み絡
まった状態が形成されているため、強固な接合状態を構
成して高い接合強度及び耐圧強度を有している。In the joint thus obtained, the joining surfaces are melted and joined, and between the joining surfaces, a state is formed in which the two resins constituting the two molded members are melted and enter each other and become entangled with each other. Therefore, it has a strong joining state and has high joining strength and pressure resistance.

【００１４】ここに、請求項１記載の樹脂成形品では、
吸収性樹脂材が、透過性樹脂材を構成する第１樹脂材料
と、該第１樹脂材料と相溶性の小さい第２樹脂材料とか
らなるアロイ材により構成されている。Here, in the resin molded product according to the first aspect,
The absorptive resin material is made of an alloy material including a first resin material constituting the permeable resin material and a second resin material having low compatibility with the first resin material.

【００１５】このため、レーザ光照射により、透過性樹
脂材及び吸収性樹脂材の当接面同士が加熱溶融されれ
ば、吸収性樹脂材を構成するアロイ材中の第１樹脂材料
と透過性樹脂材中の第１樹脂材料とが、すなわち同一樹
脂材料同士が溶着する。Therefore, if the abutting surfaces of the transmissive resin material and the absorptive resin material are heated and melted by the laser beam irradiation, the first resin material in the alloy material constituting the absorptive resin material becomes transparent to the first resin material. The first resin material in the resin material, that is, the same resin material is welded to each other.

【００１６】また、第１樹脂材料及び第２樹脂材料から
なるアロイ材には、互いに相溶性の小さい樹脂材同士を
化学的に結合させる相溶化剤が両樹脂の界面に含まれて
いる。このため、アロイ材により構成された吸収性樹脂
材の当接面が加熱溶融されれば、アロイ材中に含まれる
相溶化剤の相溶作用により、透過性樹脂材中の第１樹脂
材料及び吸収性樹脂材を構成するアロイ材中の第１樹脂
材料と吸収性樹脂材を構成するアロイ材中の第２樹脂材
料とが、すなわち異種材料同士が溶着する。[0016] The alloy made of the first resin material and the second resin material contains a compatibilizing agent for chemically bonding resin materials having low compatibility with each other at the interface between the two resins. Therefore, if the contact surface of the absorbent resin material made of the alloy material is heated and melted, the first resin material in the permeable resin material and The first resin material in the alloy material constituting the absorbent resin material and the second resin material in the alloy material constituting the absorbent resin material, that is, different materials are welded to each other.

【００１７】そして、請求項１記載の樹脂成形品では、
吸収性樹脂材をアロイ材としており、レーザ光を透過さ
せる透過性樹脂材をアロイ材としていないため、前述し
たようなアロイ材の光散乱特性によるレーザ光透過率の
低下の問題が発生しない。したがって、透過性樹脂材及
び吸収性樹脂材を構成する樹脂材料の中に互いに相溶性
の小さい樹脂材料同士が含まれていても、吸収性樹脂材
の当接面により多くのレーザ光を到達、吸収させてレー
ザ溶着による接合強度を向上させるのに有利となり、十
分な接合強度をもった良好なレーザ溶着が可能となる。In the resin molded product according to the first aspect,
Since the absorptive resin material is an alloy material, and the transmissive resin material that transmits laser light is not an alloy material, the above-described problem of a decrease in laser light transmittance due to the light scattering characteristics of the alloy material does not occur. Therefore, even if the resin materials constituting the transmissive resin material and the absorptive resin material include resin materials having low compatibility with each other, more laser light reaches the contact surface of the absorptive resin material, Absorption is advantageous for improving the bonding strength by laser welding, and good laser welding with sufficient bonding strength is possible.

【００１８】上記透過性樹脂材を構成する第１樹脂材料
の種類としては、熱可塑性を有し、加熱源としてのレー
ザ光を所定の透過率以上（好適には２６％以上）で透過
させうるものであれば特に限定されない。例えば、ナイ
ロン６（ＰＡ６）やナイロン６６（ＰＡ６６）等のポリ
アミド（ＰＡ）、ポリエチレン（ＰＥ）、ポリプロピレ
ン（ＰＰ）、スチレン−アクリロニトリル共重合体、ポ
リエチレンテレフタレート（ＰＥＴ）、ポリスチレン、
ＡＢＳ、アクリル（ＰＭＭＡ）、ポリカーボネート（Ｐ
Ｃ）、ポリブチレンテレフタレート（ＰＢＴ）、ポリア
セタール（ＰＯＭ）等を挙げることができる。なお、こ
の透過性樹脂材には、必要に応じて、カーボンブラッ
ク、染料や顔料等の所定の着色材を添加したり、あるい
はガラス繊維、カーボン繊維等の補強繊維を添加したり
してもよい。The first resin material constituting the transparent resin material has thermoplasticity and can transmit a laser beam as a heating source at a predetermined transmittance or higher (preferably 26% or higher). It is not particularly limited as long as it is one. For example, polyamide (PA) such as nylon 6 (PA6) or nylon 66 (PA66), polyethylene (PE), polypropylene (PP), styrene-acrylonitrile copolymer, polyethylene terephthalate (PET), polystyrene,
ABS, acrylic (PMMA), polycarbonate (P
C), polybutylene terephthalate (PBT), polyacetal (POM) and the like. In addition, if necessary, a predetermined coloring material such as carbon black, a dye or a pigment may be added to the transparent resin material, or a reinforcing fiber such as glass fiber or carbon fiber may be added. .

【００１９】上記吸収性樹脂材を構成するアロイ材は、
上記透過性樹脂材を構成する第１樹脂材料と、熱可塑性
を有し、この第１樹脂材料と相溶性の小さい第２樹脂材
料とからなる。The alloy material constituting the absorbent resin material is as follows:
It is composed of a first resin material constituting the permeable resin material, and a second resin material having thermoplasticity and having low compatibility with the first resin material.

【００２０】例えば、上記透過性樹脂材を構成する第１
樹脂材料として、ＰＡ６やＰＡ６６等のＰＡを採用した
場合は、この第１樹脂材料とともにアロイ材を構成する
第２樹脂材料として、ＰＰ、ＰＥ、ＰＰＳ、ＰＢＴやＡ
ＢＳ等を採用することができる。For example, the first resin constituting the transparent resin material
When PA such as PA6 or PA66 is adopted as the resin material, PP, PE, PPS, PBT or A is used as the second resin material constituting the alloy material together with the first resin material.
BS or the like can be adopted.

【００２１】また、上記透過性樹脂材を構成する第１樹
脂材料として、ＰＰを採用した場合は、この第１樹脂材
料とともにアロイ材を構成する第２樹脂材料として、Ｐ
Ａ６やＰＡ６６等のＰＡ、ＰＥ、ＰＰＳ、ＰＢＴやＡＢ
Ｓ等を採用することができる。When PP is used as the first resin material forming the transparent resin material, P is used as the second resin material forming the alloy material together with the first resin material.
PA, PE, PPS, PBT and AB such as A6 and PA66
S or the like can be adopted.

【００２２】また、上記透過性樹脂材を構成する第１樹
脂材料として、ＰＥを採用した場合は、この第１樹脂材
料とともにアロイ材を構成する第２樹脂材料として、Ｐ
Ａ６やＰＡ６６等のＰＡ、ＰＰ、ＰＰＳ、ＰＢＴやＡＢ
Ｓ等を採用することができる。When PE is used as the first resin material forming the transparent resin material, P is used as the second resin material forming the alloy material together with the first resin material.
PA such as A6 and PA66, PP, PPS, PBT and AB
S or the like can be adopted.

【００２３】また、上記透過性樹脂材を構成する第１樹
脂材料として、ＰＣを採用した場合は、この第１樹脂材
料とともにアロイ材を構成する第２樹脂材料として、Ｐ
Ａ６やＰＡ６６等のＰＡ、ＰＰ、ＰＢＴ、ＡＢＳやＰＥ
Ｔ等を採用することができる。When PC is used as the first resin material forming the transparent resin material, P is used as the second resin material forming the alloy material together with the first resin material.
PA, PP, PBT, ABS and PE such as A6 and PA66
T or the like can be adopted.

【００２４】また、上記透過性樹脂材を構成する第１樹
脂材料として、ＰＭＭＡを採用した場合は、この第１樹
脂材料とともにアロイ材を構成する第２樹脂材料とし
て、ＰＣ、ＡＢＳやＰＥＴ等を採用することができる。When PMMA is used as the first resin material forming the transparent resin material, PC, ABS, PET, or the like may be used as the second resin material forming the alloy material together with the first resin material. Can be adopted.

【００２５】また、上記透過性樹脂材を構成する第１樹
脂材料として、ＡＢＳを採用した場合は、この第１樹脂
材料とともにアロイ材を構成する第２樹脂材料として、
ＰＡ６やＰＡ６６等のＰＡ、ＰＰ、ＰＢＴ、ＰＥ、ＰＰ
ＳやＰＥＴ等を採用することができる。When ABS is used as the first resin material constituting the transparent resin material, the second resin material constituting the alloy material together with the first resin material is as follows.
PA, PP, PBT, PE, PP such as PA6 and PA66
S, PET, or the like can be employed.

【００２６】上記吸収性樹脂材を構成するアロイ材にお
ける第１樹脂材料と第２樹脂材料との配合割合は、レー
ザ光に対する吸収性や透過性樹脂材との溶着強度に影響
を与えるため、透過性樹脂材との必要な溶着強度を確保
しうる範囲内で適宜設定可能である。具体的には、第１
樹脂材料と第２樹脂材料との配合割合は、１０：９０〜
９０：１０程度の範囲内で適宜設定可能であり、２５：
７５〜７５：２５程度とすることが好ましい。The mixing ratio of the first resin material and the second resin material in the alloy material constituting the absorptive resin material affects the absorptivity to laser light and the welding strength with the transmissive resin material. It can be set appropriately within a range in which the necessary welding strength with the conductive resin material can be secured. Specifically, the first
The mixing ratio of the resin material and the second resin material is 10: 90-
It can be set appropriately within the range of about 90:10, and 25:
It is preferably about 75 to 75:25.

【００２７】なお、アロイ材は、相溶化剤等又は架橋材
を添加したり、あるいは相溶化剤及び架橋材を添加した
りすることにより製造することができる。The alloy material can be produced by adding a compatibilizer or the like or a cross-linking material, or by adding a compatibilizer and a cross-linking material.

【００２８】そして、上記吸収性樹脂材には、レーザ光
に対して所定の吸収性を発揮しうるように、必要に応じ
て、カーボンブラック、染料や顔料等の所定の着色材を
添加される。また、この吸収性樹脂材には、必要に応じ
て、ガラス繊維、カーボン繊維等の補強繊維を添加して
もよい。If necessary, a predetermined coloring material such as carbon black, a dye or a pigment is added to the absorbing resin material so that the absorbing resin material can exhibit a predetermined absorbing property with respect to the laser beam. . Further, reinforcing fibers such as glass fiber and carbon fiber may be added to the absorbent resin material as needed.

【００２９】一方、請求項２記載の樹脂成形品は、上記
透過性樹脂材が、第１樹脂材料と、上記吸収性樹脂材を
構成し、該第１樹脂材料と相溶性の小さい第２樹脂材料
とからなるアロイ材により構成されるとともに、該第１
樹脂材料と該第２樹脂材料との配合割合が、該透過性樹
脂材における上記レーザ光の透過率を２６％以上に確保
しうるように設定されている。According to a second aspect of the present invention, there is provided a resin molded product, wherein the permeable resin material comprises the first resin material and the absorbent resin material, and the second resin having a low compatibility with the first resin material. And an alloy material comprising
The mixing ratio of the resin material and the second resin material is set so that the transmittance of the laser light in the transparent resin material can be secured to 26% or more.

【００３０】このように透過性樹脂材をアロイ材により
構成する場合は、上記したようにアロイ材の光散乱特性
によるレーザ光透過率の低下の問題が発生しうる。ここ
で、アロイ材の光散乱特性は、アロイ材における第１樹
脂材料と第２樹脂材料との配合割合の影響を受けること
が本発明者の実験により明らかとなっている。すなわ
ち、この配合割合が特定の範囲にあれば、アロイ材であ
っても所定以上のレーザ光透過率を維持することが可能
となる。When the transparent resin material is made of an alloy material as described above, the problem of a decrease in laser light transmittance due to the light scattering characteristics of the alloy material may occur. Here, it has been clarified by experiments of the present inventor that the light scattering characteristics of the alloy material are affected by the mixing ratio of the first resin material and the second resin material in the alloy material. That is, if the compounding ratio is within a specific range, it is possible to maintain a laser light transmittance of a predetermined value or more even with an alloy material.

【００３１】そこで、請求項２記載の樹脂成形品では、
透過性樹脂材を構成するアロイ材において、該透過性樹
脂材におけるレーザ光透過率を２６％以上に確保しうる
ように、第１樹脂材料と第２樹脂材料との配合割合を設
定している。これにより、透過性樹脂材にアロイ材を採
用しつつ、透過性樹脂材におけるレーザ光透過率を２６
％以上に維持して、透過性樹脂材を透過する間における
レーザ光のエネルギーロスを抑えることができる。した
がって、吸収性樹脂材の当接面により多くのレーザ光を
到達、吸収させることができ、透過性樹脂材及び吸収性
樹脂材の当接面同士を十分に加熱溶融させてレーザ溶着
による接合強度を向上させることが可能となる。Therefore, in the resin molded product according to the second aspect,
In the alloy material constituting the transparent resin material, the mixing ratio of the first resin material and the second resin material is set so that the laser light transmittance of the transparent resin material can be maintained at 26% or more. . Thereby, while adopting the alloy material as the transparent resin material, the laser light transmittance of the transparent resin material is increased by 26%.
% Or more, the energy loss of the laser beam during transmission through the transparent resin material can be suppressed. Therefore, more laser light can reach and be absorbed by the abutting surface of the absorptive resin material, and the abutting surfaces of the transmissive resin material and the absorptive resin material are sufficiently heated and melted to form a bonding strength by laser welding. Can be improved.

【００３２】なお、レーザ光透過率とは、透過性樹脂材
を透過したレーザ光のエネルギーの入射光のエネルギー
に対する百分率をいう。また、レーザ光透過率は、レー
ザ光が透過性樹脂材内を透過する透過長が長くなるほど
低下し、またレーザ光の波長や樹脂成形品の吸収スペク
トルの影響も受ける。このため、レーザ光に対する樹脂
成形品の透過率が所定範囲となるように、透過性樹脂材
における透過長及び吸収スペクトル、並びにレーザ光の
波長を適宜設定する必要がある。The laser light transmittance is a percentage of the energy of the laser light transmitted through the transparent resin material with respect to the energy of the incident light. Further, the laser light transmittance decreases as the transmission length of the laser light transmitted through the transparent resin material increases, and is also affected by the wavelength of the laser light and the absorption spectrum of the resin molded product. Therefore, it is necessary to appropriately set the transmission length and the absorption spectrum of the transparent resin material and the wavelength of the laser light so that the transmittance of the resin molded product to the laser light is within a predetermined range.

【００３３】上記吸収性樹脂材を構成する第２樹脂材料
の種類としては、熱可塑性樹脂のうち、例えば、ナイロ
ン６（ＰＡ６）やナイロン６６（ＰＡ６６）等のポリア
ミド（ＰＡ）、ポリエチレン（ＰＥ）、ポリプロピレン
（ＰＰ）、スチレン−アクリロニトリル共重合体、ポリ
エチレンテレフタレート（ＰＥＴ）、ポリスチレン、Ａ
ＢＳ、アクリル（ＰＭＭＡ）、ポリカーボネート（Ｐ
Ｃ）、ポリブチレンテレフタレート（ＰＢＴ）、ＰＰＳ
等を挙げることができる。The type of the second resin material constituting the absorbent resin material is, for example, polyamide (PA) such as nylon 6 (PA6) or nylon 66 (PA66), or polyethylene (PE) among thermoplastic resins. , Polypropylene (PP), styrene-acrylonitrile copolymer, polyethylene terephthalate (PET), polystyrene, A
BS, acrylic (PMMA), polycarbonate (P
C), polybutylene terephthalate (PBT), PPS
And the like.

【００３４】そして、この吸収性樹脂材には、レーザ光
に対して所定の吸収性を発揮しうるように、必要に応じ
て、カーボンブラック、染料や顔料等の所定の着色材が
添加される。また、この吸収性樹脂材には、必要に応じ
て、ガラス繊維、カーボン繊維等の補強繊維を添加して
もよい。Then, a predetermined coloring material such as carbon black, a dye or a pigment is added to the absorptive resin material as needed so as to exhibit a predetermined absorptivity to the laser beam. . Further, reinforcing fibers such as glass fiber and carbon fiber may be added to the absorbent resin material as needed.

【００３５】上記透過性樹脂材を構成するアロイ材は、
上記吸収性樹脂材を構成する第２樹脂材料と、熱可塑性
を有し、この第２樹脂材料と相溶性の小さい第１樹脂材
料とからなり、しかも該透過性樹脂材におけるレーザ光
透過率を２６％以上に確保しうるように、第１樹脂材料
と第２樹脂材料との配合割合が設定されている。なお、
透過性樹脂材におけるレーザ光透過率は、上述のとお
り、レーザ光が透過性樹脂材内を透過する透過長、レー
ザ光の波長の影響も受ける。このため、透過性樹脂材に
おけるレーザ光透過率が２６％以上となるように、透過
長やレーザ光の波長を適宜設定する必要がある。また、
この透過性樹脂材には、必要に応じて、カーボンブラッ
ク、染料や顔料等の所定の着色材を添加したり、あるい
はガラス繊維、カーボン繊維等の補強繊維を添加したり
してもよい。The alloy material constituting the transparent resin material is as follows:
It is composed of a second resin material constituting the above-mentioned absorbent resin material, and a first resin material having thermoplasticity and having low compatibility with the second resin material. The compounding ratio of the first resin material and the second resin material is set so as to secure 26% or more. In addition,
As described above, the laser light transmittance of the transparent resin material is also affected by the transmission length of the laser light transmitted through the transparent resin material and the wavelength of the laser light. Therefore, it is necessary to appropriately set the transmission length and the wavelength of the laser light so that the laser light transmittance of the transparent resin material is 26% or more. Also,
If necessary, a predetermined coloring material such as carbon black, a dye or a pigment, or a reinforcing fiber such as glass fiber or carbon fiber may be added to the permeable resin material.

【００３６】例えば、上記吸収性樹脂材を構成する第２
樹脂材料として、ＰＡ６やＰＡ６６等のＰＡを採用した
場合は、この第２樹脂材料とともにアロイ材を構成する
第１樹脂材料として、ＰＰ、ＰＥ、ＡＢＳやＰＯＭ等を
採用することができる。そして、ＰＡとＰＰとの組合せ
の場合は、ＰＡとＰＰとの配合割合をＰＡ：ＰＰ＝２
０：８０〜８０：２０とすることができ、ＰＡとＰＥと
の組合せの場合は、ＰＡとＰＥとの配合割合をＰＡ：Ｐ
Ｅ＝２０：８０〜８０：２０とすることができる。For example, the second material constituting the absorbent resin material
When PA such as PA6 or PA66 is employed as the resin material, PP, PE, ABS, POM, or the like can be employed as the first resin material constituting the alloy material together with the second resin material. In the case of a combination of PA and PP, the mixing ratio of PA and PP is PA: PP = 2.
0:80 to 80:20, and in the case of a combination of PA and PE, the mixing ratio of PA and PE is PA: P
E = 20: 80 to 80:20.

【００３７】また、上記吸収性樹脂材を構成する第２樹
脂材料として、ＰＢＴを採用した場合は、この第２樹脂
材料とともにアロイ材を構成する第１樹脂材料として、
ＰＣ、ＡＢＳ、ＰＭＭＡやＰＰ等を採用することができ
る。そして、ＰＢＴとＡＢＳの組合せの場合は、ＰＢＴ
とＡＢＳとの配合割合をＰＢＴ：ＡＢＳ＝９０：１０〜
１０：９０とすることができ、ＰＢＴとＰＰとの組合せ
の場合は、ＰＢＴとＰＰとの配合割合をＰＢＴ：ＰＰ＝
９０：１０〜１０：９０とすることができる。When PBT is used as the second resin material forming the absorbent resin material, the first resin material forming the alloy material together with the second resin material is as follows.
PC, ABS, PMMA, PP or the like can be adopted. And in the case of the combination of PBT and ABS, PBT
PBT: ABS = 90: 10
10:90, and in the case of a combination of PBT and PP, the mixing ratio of PBT and PP is expressed as PBT: PP =
90:10 to 10:90.

【００３８】なお、請求項１又は２記載の発明におい
て、加熱源として用いるレーザ光の種類としては、レー
ザ光を透過させる透過性樹脂材の吸収スペクトルや板厚
（透過長）等との関係で、透過性樹脂材内での透過率が
所定値以上となるような波長を有するものが適宜選定さ
れる。例えば、ＹＡＧ：Ｎｄ3+レーザ（レーザ光の波
長：１０６０ｎｍ）や半導体レーザ（レーザ光の波長：
５００〜１０００ｎｍ）を用いることができる。In the first and second aspects of the present invention, the type of the laser beam used as the heating source depends on the absorption spectrum and the plate thickness (transmission length) of the transparent resin material that transmits the laser beam. A material having a wavelength such that the transmittance in the transparent resin material is equal to or more than a predetermined value is appropriately selected. For example, a YAG: Nd 3+ laser (wavelength of laser light: 1060 nm) or a semiconductor laser (wavelength of laser light:
(500-1000 nm) can be used.

【００３９】また、レーザの出力、照射密度や加工速度
（移動速度）等の照射条件は、樹脂の種類等に応じて適
宜設定可能である。Irradiation conditions such as laser output, irradiation density, and processing speed (moving speed) can be appropriately set according to the type of resin and the like.

【００４０】[0040]

【実施例】以下、実施例により本発明を具体的に説明す
る。The present invention will be described below in detail with reference to examples.

【００４１】（実施例１）本実施例は、請求項１記載の
発明を具現化したもので、透過性樹脂材及び吸収性樹脂
材を構成する樹脂材料の中に互いに相溶性の小さい樹脂
材料同士が含まれており、吸収性樹脂材側にアロイ材を
採用したものである。(Embodiment 1) This embodiment is an embodiment of the invention as defined in claim 1, wherein the resin material constituting the permeable resin material and the resin material constituting the absorptive resin material have low compatibility with each other. And an alloy material is employed on the absorbent resin material side.

【００４２】図１は自動車用の電子制御装置（ＥＣＵ）
の斜視図であり、図２はこの電子制御装置の断面図であ
る。FIG. 1 shows an electronic control unit (ECU) for an automobile.
FIG. 2 is a sectional view of the electronic control device.

【００４３】この電子制御装置は、加熱源としてのレー
ザ光に対して透過性のある透過性樹脂材１と、該レーザ
光に対して吸収性のある吸収性樹脂材２とから外郭が構
成された中空体である。なお、透過性樹脂材１が蓋を構
成し、吸収性樹脂材２がハウジングを構成する。この透
過性樹脂材１の下面の周縁部には環状凸部１０が設けら
れ、吸収性樹脂材２の側壁２１の上端面２１ａには該環
状凸部１０と互いに整合して嵌合し合う環状凹部２０が
設けられている。そして、この環状凸部１０及び環状凹
部２０同士が嵌合し合った状態で、吸収性樹脂材２の側
壁２１の上端面２１ａ及びこの上端面２１ａと当接し合
う透過性樹脂材１の周縁部の下面同士と、環状凸部１０
の外面及び環状凹部２０の内面同士とがレーザ溶着によ
り一体的に接合されている。This electronic control unit has an outer shell composed of a transparent resin material 1 that is transparent to a laser beam as a heating source and an absorbent resin material 2 that is absorptive to the laser beam. It is a hollow body. Note that the transparent resin material 1 forms a lid, and the absorbent resin material 2 forms a housing. An annular convex portion 10 is provided on a peripheral portion of a lower surface of the transparent resin material 1, and an annular upper surface 21 a of a side wall 21 of the absorbent resin material 2 is aligned with and fitted to the annular convex portion 10. A recess 20 is provided. Then, in a state where the annular convex portion 10 and the annular concave portion 20 are fitted to each other, the upper end surface 21a of the side wall 21 of the absorbent resin material 2 and the peripheral edge portion of the transparent resin material 1 which comes into contact with the upper end surface 21a. And the annular projection 10
And the inner surface of the annular recess 20 are integrally joined by laser welding.

【００４４】なお、上記吸収性樹脂材２の側壁２１に
は、低コスト化の観点よりコネクタ２２が一体に形成さ
れており（図１参照）、また吸収性樹脂材２内にはこの
コネクタ２２に接続された電気回路２３が配設されてい
る（図２参照）。A connector 22 is integrally formed on the side wall 21 of the absorbent resin material 2 from the viewpoint of cost reduction (see FIG. 1). Is provided (see FIG. 2).

【００４５】そして、透過性樹脂材１は、第１樹脂材料
としてのＰＡ６により構成されている。The permeable resin material 1 is made of PA6 as a first resin material.

【００４６】一方、吸収性樹脂材２は、透過性樹脂材１
を構成する第１樹脂材料としてのＰＡ６と、該第１樹脂
材料と相溶性の小さい第２樹脂材料としてのＰＢＴとか
らなるアロイ材により構成されている。また、この吸収
性樹脂材２を構成するアロイ材における第１樹脂材料と
第２樹脂材料との配合割合は、ＰＡ６：ＰＢＴ＝５０：
５０とされている。さらに、この吸収性樹脂材２には、
加熱源としてのレーザ光に対して所定の吸収性を発揮し
うるように、着色材としてのカーボンブラックが適宜量
添加されている。なお、上記第２樹脂材料としてのＰＢ
Ｔは、結晶構造により材料固有値としての光透過性が低
いことから、透過性樹脂材として用いることは不適であ
る。On the other hand, the absorbent resin material 2 is
And an alloy material composed of PA6 as a first resin material and PBT as a second resin material having low compatibility with the first resin material. The mixing ratio of the first resin material and the second resin material in the alloy material constituting the absorbent resin material 2 is PA6: PBT = 50:
50. Further, the absorbent resin material 2 includes
Carbon black as a coloring material is added in an appropriate amount so as to exhibit a predetermined absorptivity to a laser beam as a heating source. Note that PB as the second resin material is used.
T is unsuitable for use as a transparent resin material because light transmittance as a material intrinsic value is low due to the crystal structure.

【００４７】上記構成を有する本実施例の樹脂成形品
は、以下のようにして製造した。まず、透過性樹脂材１
及び吸収性樹脂材２を射出成形によりそれぞれ所定形状
に形成した後、吸収性樹脂材２の内面に電気回路２３を
配設した。そして、透過性樹脂材１の当接端部と吸収性
樹脂材２の当接端部とを当接させるとともに、透過性樹
脂材１の環状凸部１０と吸収性樹脂材２の環状凹部２０
とを嵌合した。この状態で、透過樹脂材１側から吸収性
樹脂材２の環状凹部２０に向けてレーザ光を照射した。
なお、レーザ光としてはＹＡＧ−ネオジウムレーザ光
（波長１０６０ｎｍ）を用いた。照射条件は、出力：２
００〜４００Ｗ、加工速度：５ｍ／ｍｉｎとした。The resin molded article of the present example having the above configuration was manufactured as follows. First, the permeable resin material 1
After the absorbent resin material 2 was formed into a predetermined shape by injection molding, an electric circuit 23 was provided on the inner surface of the absorbent resin material 2. The contact end of the transparent resin material 1 and the contact end of the absorbent resin material 2 are brought into contact with each other, and the annular convex portion 10 of the transparent resin material 1 and the annular concave portion 20 of the absorbent resin material 2
And were fitted. In this state, laser light was irradiated from the side of the transparent resin material 1 toward the annular concave portion 20 of the absorbent resin material 2.
Note that YAG-neodymium laser light (wavelength 1060 nm) was used as the laser light. Irradiation conditions: output: 2
00 to 400 W, processing speed: 5 m / min.

【００４８】このレーザ光照射により、透過性樹脂材１
及び吸収性樹脂材２の当接面同士を加熱溶融して溶着
し、透過性樹脂材１の周縁部の下面及び吸収性樹脂材２
の側壁２１の上端面２１ａ同士と、環状凸部１０の外面
及び環状凹部２０の内面同士とを一体的に接合した。By this laser beam irradiation, the transparent resin material 1
Then, the contact surfaces of the absorbent resin material 2 are heated and melted and welded, and the lower surface of the peripheral portion of the transparent resin material 1 and the absorbent resin material 2
The upper end surfaces 21a of the side walls 21 and the outer surface of the annular convex portion 10 and the inner surface of the annular concave portion 20 are integrally joined.

【００４９】このように、本実施例に係る樹脂成形品で
は、吸収性樹脂材２をアロイ材としており、レーザ光を
透過させる透過性樹脂材１をアロイ材としていないた
め、レーザ照射時にアロイ材の光散乱特性によりレーザ
光透過率低下の問題が発生することはない。したがっ
て、透過性樹脂材１及び吸収性樹脂材２を構成する樹脂
材料の中に互いに相溶性の小さい樹脂材料同士が含まれ
ていても、吸収性樹脂材２の当接面により多くのレーザ
光を到達、吸収させてレーザ溶着による接合強度を向上
させるのに有利となり、十分な接合強度をもった良好な
レーザ溶着が可能となる。As described above, in the resin molded product according to the present embodiment, the absorptive resin material 2 is an alloy material and the permeable resin material 1 that transmits laser light is not an alloy material. The problem of lowering of the laser light transmittance does not occur due to the light scattering characteristics of. Therefore, even if the resin materials constituting the transmissive resin material 1 and the absorptive resin material 2 include resin materials having low compatibility with each other, more laser light is applied to the contact surface of the absorptive resin material 2. Is achieved and absorbed to improve the bonding strength by laser welding, and good laser welding with sufficient bonding strength can be achieved.

【００５０】また、本実施例によれば、以下に示す作用
効果も期待できる。According to the present embodiment, the following operation and effect can be expected.

【００５１】自動車用の電子制御装置においては、装置
内への水の侵入を防ぐべく密封性が求められる。このた
め、従来、ハウジングと蓋との接合は、熱硬化性接着剤
により接着したり、あるいは高価なフッ素ゴム系のＯリ
ングを介してボルト及び埋め込みナットで締結したりす
ることにより行われている。しかし、熱硬化性接着剤を
利用する場合は、炉内でのバッジ加熱処理時に電気回路
２３のはんだ接合部等に熱影響が発生し易く、また生産
性も悪い。また、Ｏリングを介するボルト及び埋め込み
ナットの締結手段を利用する場合は、部品点数の増加と
工程増加で高コストにある。この点、レーザ溶着を利用
する本実施例によれば、熱影響により電気回路２３に悪
影響が発生したり、部品点数が増加したりすることがな
いことから、上記従来の問題を解消することができる。In an electronic control device for a vehicle, a sealing property is required to prevent water from entering the device. For this reason, conventionally, the housing and the lid have been joined by bonding with a thermosetting adhesive or by fastening with bolts and embedded nuts via expensive fluorine rubber O-rings. . However, when a thermosetting adhesive is used, thermal effects are likely to occur on the solder joints and the like of the electric circuit 23 during badge heating in a furnace, and productivity is poor. In addition, when using the fastening means of the bolt and the embedded nut via the O-ring, the number of parts and the number of processes are increased, resulting in high cost. In this regard, according to the present embodiment using the laser welding, since the electric circuit 23 is not adversely affected by the heat influence and the number of components is not increased, the conventional problem described above can be solved. it can.

【００５２】また、自動車用の電子制御装置におけるコ
ネクタ２２には吸水に対する寸法安定性が求められる。
このため、コネクタ２２の材料として、一般的には耐吸
水性に優れるＰＢＴが採用されている。そして、本実施
例のように低コスト化を図るべくコネクタ２２をハウジ
ングとしての吸収性樹脂材２と一体成形しようとする
と、吸収性樹脂材２の樹脂材料も当然にＰＢＴとなる。
ところが、上述のとおりＰＢＴは材料固有値としての光
透過性が低く、吸収性樹脂材としてしか用いることがで
きない。そして、このＰＢＴと相溶性があり、かつ、レ
ーザ光に対して透過性のある適当な樹脂材料は、一般的
には見あたらない。このため、ハウジングの樹脂材料に
ＰＢＴを採用した場合、従来のレーザ溶着によっては、
蓋部材を接合することができない。この点、本実施例に
よれば、透過性樹脂材１を構成するレーザ透過性に優れ
た第１樹脂材料としてのＰＡ６と、給水に対する寸法安
定性に優れた第２樹脂材料としてのＰＢＴとからなるア
ロイ材によりハウジングとしての吸収性樹脂材料２を構
成していることから、蓋としての透過性樹脂材１とハウ
ジングとしての吸収性樹脂材２とのレーザ溶着が可能と
なる。したがって、ハウジングとしての吸水性樹脂材料
２とコネクタ２２とを一体成形して低コスト化を図りつ
つ、コネクタ２２における吸水に対する寸法安定性を向
上させることが可能となる。The connector 22 of the electronic control unit for a vehicle is required to have dimensional stability against water absorption.
For this reason, PBT which is generally excellent in water absorption resistance is adopted as a material of the connector 22. When the connector 22 is integrally molded with the absorbent resin material 2 as a housing in order to reduce the cost as in the present embodiment, the resin material of the absorbent resin material 2 naturally becomes PBT.
However, as described above, PBT has low light transmittance as a material intrinsic value, and can be used only as an absorbent resin material. A suitable resin material compatible with the PBT and transparent to the laser beam is not generally found. Therefore, when PBT is adopted as the resin material of the housing, depending on the conventional laser welding,
The lid member cannot be joined. In this regard, according to the present embodiment, PA6 as the first resin material having excellent laser transmittance and the PBT as the second resin material having excellent dimensional stability against water supply according to the present embodiment. Since the absorptive resin material 2 as the housing is made of the alloy material, laser welding of the transmissive resin material 1 as the lid and the absorptive resin material 2 as the housing becomes possible. Therefore, it is possible to improve the dimensional stability of the connector 22 against water absorption while reducing the cost by integrally molding the water-absorbent resin material 2 as the housing and the connector 22.

【００５３】なお、この実施例において、蓋としての透
過性樹脂材１を構成する第１樹脂材料をＰＡよりも安価
なポリプロピレン（ＰＰ）として、より低コスト化を図
ることも可能である。In this embodiment, it is possible to reduce the cost by using polypropylene (PP), which is cheaper than PA, as the first resin material constituting the transparent resin material 1 as the lid.

【００５４】（実施例２）本実施例は、請求項２記載の
発明を具現化したもので、透過性樹脂材及び吸収性樹脂
材を構成する樹脂材料の中に互いに相溶性の小さい樹脂
材料同士が含まれており、透過性樹脂材側にアロイ材を
採用したものである。(Embodiment 2) This embodiment is an embodiment of the invention as defined in claim 2, wherein the resin material constituting the permeable resin material and the resin material constituting the absorbent resin material have low compatibility with each other. And an alloy material is employed on the transparent resin material side.

【００５５】射出成形法により、所定のアロイ材により
構成された板厚が３ｍｍの透過性樹脂材３を準備した。
この透過性樹脂材３を構成するアロイ材は、第１樹脂材
料としてのＰＰと、後述する吸収性樹脂材４を構成する
第２樹脂材料としてのＰＡ６とからなる。なお、第１樹
脂材料としてのＰＰと第２樹脂材料としてのＰＡ６とは
互いに相溶性の小さい樹脂である。また、この透過性樹
脂材１には、補強繊維としてのガラス繊維（ＧＦ）が３
０ｍａｓｓ％添加されている。A permeable resin material 3 made of a predetermined alloy material and having a thickness of 3 mm was prepared by injection molding.
The alloy material forming the permeable resin material 3 includes PP as a first resin material and PA6 as a second resin material forming an absorbent resin material 4 described later. Note that PP as the first resin material and PA6 as the second resin material are resins having low compatibility with each other. In addition, the permeable resin material 1 contains glass fibers (GF) 3 as reinforcing fibers.
0 mass% is added.

【００５６】そして、この透過性樹脂材３を構成するア
ロイ材における第１樹脂材料と第２樹脂材料との配合割
合は、ＰＰ：ＰＡ６＝３０：７０とされている。これに
より、該透過性樹脂材３における加熱源としてのレーザ
光の透過率が２６％以上に確保されている。The mixing ratio of the first resin material and the second resin material in the alloy material constituting the transparent resin material 3 is set to PP: PA6 = 30: 70. Thereby, the transmittance of the laser light as a heating source in the transparent resin material 3 is secured to 26% or more.

【００５７】また、射出成形法により、第２樹脂材料と
してのＰＡ６により構成された板厚が３ｍｍの吸収性樹
脂材４を準備した。そして、この吸収性樹脂材４には、
加熱源としてのレーザ光に対して所定の吸収性を発揮し
うるように、着色材としてのカーボンブラックが適宜量
添加されている。また、この吸収性樹脂材には、補強繊
維としてのガラス繊維（ＧＦ）が３０ｍａｓｓ％添加さ
れている。Further, an absorbent resin material 4 made of PA6 as the second resin material and having a thickness of 3 mm was prepared by injection molding. And, in this absorbent resin material 4,
Carbon black as a coloring material is added in an appropriate amount so as to exhibit a predetermined absorptivity to a laser beam as a heating source. In addition, 30 mass% of glass fiber (GF) as a reinforcing fiber is added to the absorbent resin material.

【００５８】一方、波長が１．０６μｍのＹＡＧ：Ｎｄ
3+レーザ光を発するレーザトーチ５を準備した。On the other hand, YAG: Nd having a wavelength of 1.06 μm
A laser torch 5 emitting 3+ laser light was prepared.

【００５９】そして、図３に示すように、吸収性樹脂材
４の上に透過性樹脂材３を重ね合わせるように両者を当
接させるとともに、透過性樹脂材３及び吸収性樹脂材４
を図示しないクランプ手段でクランプした。この状態
で、レーザトーチ５を透過性樹脂材３側から照射して、
透過性樹脂材３と吸収性樹脂材４とをレーザ溶着により
一体的に接合した。Then, as shown in FIG. 3, the transparent resin material 3 is brought into contact with the absorbent resin material 4 so as to be superimposed on the absorbent resin material 4, and the transparent resin material 3 and the absorbent resin material 4
Was clamped by clamping means (not shown). In this state, the laser torch 5 is irradiated from the transparent resin material 3 side,
The transparent resin material 3 and the absorbent resin material 4 were integrally joined by laser welding.

【００６０】本実施例では、透過性樹脂材３をアロイ材
により構成しているが、このアロイ材における第１樹脂
材料と第２樹脂材料との配合割合の好適化又は最適化に
より、アロイ材の光散乱特性によるレーザ光透過率の低
下の問題を解消することができる。すなわち、透過性樹
脂材３を構成するアロイ材において、該透過性樹脂材３
におけるレーザ光透過率を２６％以上に確保しうるよう
に、第１樹脂材料と第２樹脂材料との配合割合が設定さ
れている。これにより、透過性樹脂材３にアロイ材を採
用しつつ、透過性樹脂材３におけるレーザ光透過率を２
６％以上に維持して、透過性樹脂材３を透過する間にお
けるレーザ光のエネルギーロスを抑えることができる。
したがって、吸収性樹脂材４の当接面により多くのレー
ザ光を到達、吸収させることができ、透過性樹脂材３及
び吸収性樹脂材４の当接面同士を十分に加熱溶融させて
レーザ溶着による接合強度を向上させることが可能とな
る。In this embodiment, the permeable resin material 3 is made of an alloy material. However, by optimizing or optimizing the mixing ratio of the first resin material and the second resin material in this alloy material, the alloy material is The problem of lowering of the laser light transmittance due to the light scattering characteristic of the present invention can be solved. That is, in the alloy material constituting the permeable resin material 3, the permeable resin material 3
The mixing ratio of the first resin material and the second resin material is set so that the laser light transmittance in the above can be secured to 26% or more. As a result, while the alloy material is used as the transparent resin material 3, the laser light transmittance of the transparent resin material 3 is reduced by 2%.
By maintaining it at 6% or more, it is possible to suppress energy loss of laser light during transmission through the transparent resin material 3.
Therefore, more laser light can reach and be absorbed by the contact surface of the absorbent resin material 4, and the contact surfaces of the transparent resin material 3 and the absorbent resin material 4 are sufficiently heated and melted to perform laser welding. It is possible to improve the bonding strength due to.

【００６１】なお、本実施例では、板材よりなる透過性
樹脂材３及び吸収性樹脂材４からなる樹脂成形品を示し
たが、具体的な製品（例えばインテークマニホールド、
キャニスター、エアークリーナーやダクト）に適用する
ことは勿論可能である。In the present embodiment, a resin molded product made of a permeable resin material 3 made of a plate material and an absorbent resin material 4 is shown, but specific products (for example, an intake manifold,
Of course, it can be applied to canisters, air cleaners and ducts.

【００６２】（レーザ光透過率と溶着強度との関係）ガ
ラス繊維が３０ｗｔ％添加されて強化されたナイロン６
からなる板厚３ｍｍの透過性樹脂材と、カーボンブラッ
クが所定量添加されたナイロン６からなる板厚３ｍｍの
吸収性樹脂材とを重ね合わせ、ＹＡＧ：Ｎｄ3+レーザ
（波長：１０６０ｎｍ）を透過性樹脂材側から照射し
て、レーザ溶着により一体的に接合した。なお、レーザ
の出力は４００Ｗ、加工速度は４ｍ／ｍｉｎとした。(Relationship between Laser Light Transmittance and Welding Strength) Nylon 6 reinforced by adding 30 wt% of glass fiber
And a 3 mm-thick absorptive resin material made of nylon 6 to which a predetermined amount of carbon black has been added, and a YAG: Nd 3+ laser (wavelength: 1060 nm) is transmitted. Irradiation was performed from the conductive resin material side, and they were integrally joined by laser welding. The output of the laser was 400 W and the processing speed was 4 m / min.

【００６３】そして、透過性樹脂材に着色剤としての染
料を添加し、その添加量を種々変更することにより、透
過性樹脂材におけるレーザ光透過率を種々変更して、透
過性樹脂材におけるレーザ光透過率と溶着強度との関係
を調べた。その結果を図４に示す。Then, a dye as a colorant is added to the transparent resin material, and the amount of the dye is variously changed, so that the laser light transmittance of the transparent resin material is variously changed. The relationship between light transmittance and welding strength was examined. FIG. 4 shows the results.

【００６４】図４から明らかなように、透過性樹脂材に
おけるレーザ光透過率が２６％以上あれば、溶着強度が
４５ＭＰａ以上となり、十分な溶着強度を達成できるこ
とがわかる。As is clear from FIG. 4, when the transmittance of the laser beam in the transparent resin material is 26% or more, the welding strength becomes 45 MPa or more, and a sufficient welding strength can be achieved.

【００６５】なお、レーザ光透過率は、入射エネルギー
をワーク有無で算出することにより測定し、溶着強度
は、溶着部を引張り破断することにより測定した。The laser beam transmittance was measured by calculating the incident energy depending on the presence or absence of the work, and the welding strength was measured by pulling and breaking the welded portion.

【００６６】（樹脂のアロイ化とレーザ光透過率との関
係）樹脂のアロイ化とレーザ光透過率との関係を調べ
た。その結果を図５に示す。なお、レーザ光には、ＹＡ
Ｇ：Ｎｄ3+レーザ（波長：１０６０ｎｍ）を用い、出力
は４００Ｗとした。(Relationship between resin alloying and laser beam transmittance) The relationship between resin alloying and laser beam transmittance was examined. The result is shown in FIG. Note that the laser light includes YA
G: An Nd 3+ laser (wavelength: 1060 nm) was used, and the output was 400 W.

【００６７】図５から明らかなように、ＰＣ、ＰＡ６、
ＡＢＳ又はＰＰは、単独では何れもレーザ光透過率が２
６％以上あるのに対し、ＰＡ６とＰＰとからなるアロイ
材（ＰＡ６：ＰＰ＝６０：４０）やＰＣとＡＢＳとから
なるアロイ材（ＰＣ：ＡＢＳ＝６０：４０）では、レー
ザ光透過率が極端に低下し、板厚によってはレーザ光透
過率が２６％未満になる場合があった。As is apparent from FIG. 5, PC, PA6,
ABS or PP alone has a laser light transmittance of 2
In contrast to 6% or more, the alloy material composed of PA6 and PP (PA6: PP = 60: 40) and the alloy material composed of PC and ABS (PC: ABS = 60: 40) have a low laser beam transmittance. In some cases, the transmittance was extremely reduced, and the laser beam transmittance was less than 26% depending on the plate thickness.

【００６８】[0068]

【発明の効果】以上詳述したように、本発明の樹脂成形
品によれば、透過性樹脂材及び吸収性樹脂材を構成する
樹脂材料の中に互いに相溶性の小さい樹脂材料同士が含
まれていても、吸収性樹脂材の当接面により多くのレー
ザ光を到達、吸収させてレーザ溶着による接合強度を向
上させるのに有利となり、十分な接合強度をもった良好
なレーザ溶着が可能となる。As described above in detail, according to the resin molded product of the present invention, the resin materials constituting the permeable resin material and the absorptive resin material include resin materials having low compatibility with each other. Even if it does, it is advantageous to improve the bonding strength by laser welding by reaching and absorbing more laser light to the contact surface of the absorbent resin material, and it is possible to achieve good laser welding with sufficient bonding strength Become.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例１に係る樹脂成形品の斜視図で
ある。FIG. 1 is a perspective view of a resin molded product according to a first embodiment of the present invention.

【図２】上記実施例１に係る樹脂成形品の断面図であ
る。FIG. 2 is a cross-sectional view of the resin molded product according to the first embodiment.

【図３】本発明の実施例２に係る樹脂成形品の断面図で
ある。FIG. 3 is a sectional view of a resin molded product according to a second embodiment of the present invention.

【図４】透過性樹脂材におけるレーザ光透過率と溶着強
度との関係を示す線図である。FIG. 4 is a diagram showing a relationship between laser beam transmittance and welding strength in a transparent resin material.

【図５】樹脂のアロイ化とレーザ光透過率との関係を示
す線図である。FIG. 5 is a diagram showing the relationship between alloying of resin and laser light transmittance.

【符号の説明】[Explanation of symbols]

１、３…透過性樹脂材 ２、４…吸収性樹脂材 1, 3: transparent resin material 2, 4, ... absorbent resin material

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F071 AA20 AA45 AA54 AH07 AH12 BB05 4F211 AD05 AG03 TA01 TC02 TD11 TN27 4J002 BB03W BB12W BB12X BC03W BC06W BG06W BN15W BN15X CB00W CF06W CF06X CF07W CF07X CG00W CG00X CL01W CL01X CL03W CL03X CN01X FD010 FD090 GN00  ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 4F071 AA20 AA45 AA54 AH07 AH12 BB05 4F211 AD05 AG03 TA01 TC02 TD11 TN27 4J002 BB03W BB12W BB12X BC03W BC06W BG06W BN15W BN15X CB00W CF06W CF06X CG01W CN06X

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 加熱源としてのレーザ光に対して透過性
のある透過性樹脂材と、該レーザ光に対して吸収性のあ
る吸収性樹脂材とからなり、該透過性樹脂材及び該吸収
性樹脂材の当接端部同士が該透過性樹脂材側からの該レ
ーザ光の照射により溶着されて接合された樹脂成形品に
おいて、 上記吸収性樹脂材が、上記透過性樹脂材を構成する第１
樹脂材料と、該第１樹脂材料と相溶性の小さい第２樹脂
材料とからなるアロイ材により構成されていることを特
徴とする樹脂成形品。1. A light transmitting apparatus comprising: a transparent resin material capable of transmitting laser light as a heating source; and an absorbent resin material capable of absorbing the laser light. In the resin molded product in which the contact ends of the conductive resin materials are welded and joined by irradiation of the laser light from the transparent resin material side, the absorbent resin material constitutes the transparent resin material First
A resin molded product comprising an alloy material made of a resin material and a second resin material having low compatibility with the first resin material. 【請求項２】 加熱源としてのレーザ光に対して透過性
のある透過性樹脂材と、該レーザ光に対して吸収性のあ
る吸収性樹脂材とからなり、該透過性樹脂材及び該吸収
性樹脂材の当接端部同士が該透過性樹脂材側からの該レ
ーザ光の照射により溶着されて接合された樹脂成形品に
おいて、 上記透過性樹脂材は、第１樹脂材料と、上記吸収性樹脂
材を構成し、該第１樹脂材料と相溶性の小さい第２樹脂
材料とからなるアロイ材により構成されるとともに、該
第１樹脂材料と該第２樹脂材料との配合割合が、該透過
性樹脂材における上記レーザ光の透過率を２６％以上に
確保しうるように設定されていることを特徴とする樹脂
成形品。2. A method according to claim 1, further comprising a transparent resin material having a transmitting property with respect to a laser beam as a heating source, and an absorbing resin material having an absorbing property with respect to the laser beam. In a resin molded product in which the contact end portions of the transparent resin materials are welded and joined by the irradiation of the laser beam from the transparent resin material side, the transparent resin material comprises: a first resin material; A first resin material and a second resin material having a low compatibility with the first resin material, and the mixing ratio of the first resin material and the second resin material is A resin molded product characterized in that the transmittance of the laser light in the transparent resin material is set to 26% or more.
JP2001090597A 2001-03-27 2001-03-27 Plastic molded product Expired - Lifetime JP3610917B2 (en)

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JP2004195829A (en) * 2002-12-19 2004-07-15 Sumitomo Heavy Ind Ltd Laser welding method and member to be welded
JP2006123192A (en) * 2004-10-26 2006-05-18 Dainippon Ink & Chem Inc Polycarbonate resin molded product
JP2006188553A (en) * 2004-12-28 2006-07-20 Daicel Polymer Ltd Laser welding resin composition and molded product
JP2006257441A (en) * 2006-05-30 2006-09-28 Techno Polymer Co Ltd Molding material for laser fusion and molded article
JP2006312303A (en) * 2004-10-01 2006-11-16 Daicel Polymer Ltd Laser beam welding resin composition and composite molding
JP2007008974A (en) * 2005-06-28 2007-01-18 Nippon A & L Kk Thermoplastic resin composition for laser welding
CN100339206C (en) * 2003-06-24 2007-09-26 株式会社电装 Method for manufacturing laser beam transmitting member capable of preventing poor laser welding, resin molding apparatus and method for manufacturing composite resin product
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US8076415B2 (en) 2003-02-04 2011-12-13 Techno Poly,er Co., Ltd. Molding material and molded article for laser fusion
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JP2018531819A (en) * 2015-10-16 2018-11-01 ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェンＨｅｎｋｅｌ ＡＧ ＆ Ｃｏ． ＫＧａＡ Joining two different plastics

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* Cited by examiner, † Cited by third party
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JP2004195829A (en) * 2002-12-19 2004-07-15 Sumitomo Heavy Ind Ltd Laser welding method and member to be welded
US8076415B2 (en) 2003-02-04 2011-12-13 Techno Poly,er Co., Ltd. Molding material and molded article for laser fusion
US8183323B2 (en) 2003-02-04 2012-05-22 Techno Polymer Co., Ltd. Molding material and molded article for laser fusion
CN100339206C (en) * 2003-06-24 2007-09-26 株式会社电装 Method for manufacturing laser beam transmitting member capable of preventing poor laser welding, resin molding apparatus and method for manufacturing composite resin product
JP2006312303A (en) * 2004-10-01 2006-11-16 Daicel Polymer Ltd Laser beam welding resin composition and composite molding
JP2006123192A (en) * 2004-10-26 2006-05-18 Dainippon Ink & Chem Inc Polycarbonate resin molded product
JP4600745B2 (en) * 2004-10-26 2010-12-15 Ｄｉｃ株式会社 Polycarbonate resin molded product
JP2006188553A (en) * 2004-12-28 2006-07-20 Daicel Polymer Ltd Laser welding resin composition and molded product
JP2007008974A (en) * 2005-06-28 2007-01-18 Nippon A & L Kk Thermoplastic resin composition for laser welding
JP2006257441A (en) * 2006-05-30 2006-09-28 Techno Polymer Co Ltd Molding material for laser fusion and molded article
US7785687B2 (en) 2007-05-14 2010-08-31 Denso Corporation Molded resin product
JP2010005913A (en) * 2008-06-26 2010-01-14 Akebono Brake Ind Co Ltd Laser beam welding method and apparatus
JP2018531819A (en) * 2015-10-16 2018-11-01 ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェンＨｅｎｋｅｌ ＡＧ ＆ Ｃｏ． ＫＧａＡ Joining two different plastics
JP2017094630A (en) * 2015-11-26 2017-06-01 オムロン株式会社 Joint structure
WO2017090394A1 (en) * 2015-11-26 2017-06-01 オムロン株式会社 Joining structure
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