WO2013051494A1 - 溶着体の製造方法 - Google Patents

溶着体の製造方法 Download PDF

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Publication number
WO2013051494A1
WO2013051494A1 PCT/JP2012/075330 JP2012075330W WO2013051494A1 WO 2013051494 A1 WO2013051494 A1 WO 2013051494A1 JP 2012075330 W JP2012075330 W JP 2012075330W WO 2013051494 A1 WO2013051494 A1 WO 2013051494A1
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WO
WIPO (PCT)
Prior art keywords
welding
resin molded
molded body
resin
insulating layer
Prior art date
Application number
PCT/JP2012/075330
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
貴之 宮下
岡田　章
Original Assignee
ポリプラスチックス株式会社
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 ポリプラスチックス株式会社 filed Critical ポリプラスチックス株式会社
Priority to KR1020147009460A priority Critical patent/KR20140079395A/ko
Priority to CN201280048766.6A priority patent/CN103842155A/zh
Publication of WO2013051494A1 publication Critical patent/WO2013051494A1/ja

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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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • 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
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • 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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1226—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one bevelled joint-segment
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/2422—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 circular, oval or elliptical
    • B29C66/24221—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 circular, oval or elliptical being circular
    • 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
    • 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
    • B29C66/50—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
    • B29C66/543—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 more than two hollow-preforms to form said hollow 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time

Definitions

  • the present invention relates to a method for manufacturing a welded body including a first resin molded body and a second resin molded body.
  • a product having a complicated shape may be manufactured by joining a plurality of resin molded bodies.
  • a joining method joining with an adhesive, mechanical joining with a bolt or the like is known.
  • polyphenylene sulfide resin is widely used as a raw material for electric / electronic parts and automobile parts because it has a good balance of mechanical properties, heat resistance, chemical resistance and thin-wall fluidity.
  • each welding method has its own advantages, and it is desirable to determine which welding method to use when joining between resin molded bodies in consideration of the shape of the welded body.
  • the bonding strength tends to decrease, and there are attempts to improve the bonding strength by improving the resin itself or using specific additives. . However, it may be necessary to improve the bonding strength regardless of the type of material and the additive used.
  • the present invention has been made to solve the above-mentioned problems, and its purpose is to increase the bonding strength between resin molded bodies without using a specific material, although various welding methods can be adopted. It is to provide a welding technique.
  • the inventors of the present invention have made extensive studies to solve the above problems. As a result, if a heat insulating layer is formed on a part of the cavity surface of the mold and a resin molded body is manufactured using this mold, the low crystallinity region and the high crystallinity region are formed in the same resin molding. It was found that it can be formed on the body. Based on this knowledge, at least one of the first resin molded body and the second resin molded body used for joining by generating heat and welding the overlapped portion is a gold having a heat insulating layer formed on a part of the cavity surface.
  • thermoplastic resin constituting the molded resin article It has been found that the above-mentioned problems can be solved by using a mold and producing a mold at a cold crystallization temperature (T c1 ) of ⁇ 10 ° C. or less of the thermoplastic resin constituting the molded resin article.
  • T c1 cold crystallization temperature
  • a method for producing a welded body in which a first resin molded body and a second resin molded body are welded, the first welding planned surface being a welding planned surface of the first resin molded body, and the second resin A welding preparation step for superimposing a second welding planned surface, which is a surface to be welded of the molded body, and after the welding preparation step, heat is generated in the overlapping portion, and the first resin molded body and the second resin molding are formed.
  • a welding step for welding the body, and at least one of the first resin molded body and the second resin molded body uses a mold in which a heat insulating layer is formed on a part of the cavity surface, and a mold temperature Is manufactured under the condition of a cold crystallization temperature (T c1 ) of the thermoplastic resin constituting the molded resin body to be molded at ⁇ 10 ° C. or less, and the heat insulating layer is formed on the cavity surface with the first welding scheduled surface and A portion in contact with at least one of the second welding planned surfaces
  • T c1 cold crystallization temperature
  • the first resin molded body and the second resin molded body are manufactured using a mold in which a heat insulating layer is formed on a part of the cavity surface, and the heat insulating layer is formed on all the cavity surfaces.
  • various welding methods can be preferably employed, but the bonding strength between the resin molded bodies can be increased without using a specific material.
  • FIG. 1 is a schematic view showing an example of a welded body, in which (a) is a perspective view and (b) is an MM cross-sectional view.
  • FIG. 2 is a bottom view schematically showing the lid.
  • FIG. 3 is a plan view schematically showing the main body.
  • FIG. 4 is a view schematically showing a cross section of a cavity of a mold for manufacturing a lid.
  • FIG. 5 is a diagram schematically showing a cross section of a cavity of a second mold for manufacturing the main body.
  • FIG. 6 is a schematic view showing a welded body of an embodiment different from the embodiment shown in FIG. FIG.
  • FIG. 7 is a diagram schematically showing a welded body manufactured in Example 1, (a) is an overall cross-sectional view, and (b) is an enlarged view of a portion surrounded by a two-dot chain line in (a). It is.
  • FIG. 8 is a schematic diagram for explaining a portion where a heat insulating layer is formed in a mold, where (a) represents a lid portion and (b) represents a main body portion.
  • FIG. 9 is a diagram schematically showing a manufacturing process of a test piece for measuring the welding strength.
  • the method for manufacturing a welded body according to the present invention is a method for manufacturing a welded body in which a first resin molded body and a second resin molded body are welded, and one of the features of the present invention is that the first resin molded body and the second resin molded body are It exists in the point which manufactures at least one of the resin molding by a specific method.
  • the shape of the welded body and the manufacturing conditions of the welded body are not particularly limited.
  • the first resin molded body and the second resin molded body used for the above-mentioned specific welded body are taken as an example for these manufacturing methods. explain.
  • FIG. 1A is a perspective view schematically showing a welded body
  • FIG. 1B is a cross-sectional view schematically showing an MM cross section of the welded body.
  • the welded body used for explanation in the present embodiment is a container 1, and has a lid portion 10 and a main body portion 20.
  • the lid portion 10 is a member corresponding to the first resin molded body
  • the main body portion 20 is a member corresponding to the second resin molded body.
  • the container 1 is formed by welding the outer peripheral part of the bottom face of the disk-shaped lid part 10 and the opening edge of the recessed part which the main-body part 20 has.
  • FIG. 2 is a bottom view schematically showing the lid 10.
  • the cover part 10 has the 1st welding plan surface 101, as shown in FIG.
  • the first welding planned surface 101 is a part that comes into contact with the opening edge of the concave portion of the main body 20 at the time of welding. As shown in FIG. 2, the first welding planned surface 101 in the present embodiment is an annular surface existing on the bottom side of the disc-shaped lid 10 (represented by a dot pattern in FIG. 2).
  • FIG. 3 is a plan view schematically showing the main body 20. As shown in FIG. 3, the main body 20 has a second welding scheduled surface 201 at the opening edge of the recess.
  • the second welding scheduled surface 201 refers to a portion that comes into contact with the first welding planned surface 101 in the outer peripheral portion of the bottom surface of the lid 10 during welding.
  • the second welding scheduled surface 201 in the present embodiment is an annular surface formed at the opening edge of the main body 20 as shown in FIG.
  • the container 1 by welding the lid 10 and the main body 20
  • the welding method include vibration welding, ultrasonic welding, spin welding, and heat ray welding.
  • adopting these welding methods is demonstrated.
  • the welding preparation process in the case of vibration welding is a process in which the first welding planned surface 101 that is the welding scheduled surface of the lid 10 and the second welding scheduled surface 201 that is the welding planned surface of the main body 20 are overlapped. is there. In the subsequent welding step, the overlapped welding scheduled surfaces are brought into pressure contact with each other in this state, and in this state, welding is performed by frictional heat generated by applying vibration in the lateral direction.
  • the vibration conditions in the welding process are not particularly limited, and the conditions such as the frequency and amplitude can be set as appropriate according to the type of material used.
  • the welding preparation process in the case of ultrasonic welding is the same as in the case of vibration welding, the first welding planned surface 101 that is the welding planned surface of the lid 10 and the second welding schedule that is the welding planned surface of the main body 20.
  • the surface 201 is superposed on the surface 201.
  • the overlapped scheduled welding surfaces are brought into pressure contact with each other in this state, and in this state, longitudinal vibrations are generated on the joining surfaces by ultrasonic waves and are welded by the frictional heat.
  • the welding preparation step in the case of spin welding is a first welding planned surface 101 that is a welding planned surface of the lid 10 and a second welding planned surface that is a welding planned surface of the main body 20. 201.
  • the overlapping welding scheduled surfaces are brought into pressure contact with each other in this state, and in this state, one of the lid portion 10 and the main body portion 20 is rotated at a high speed to generate frictional heat and perform welding. .
  • the first welding scheduled surface 101 which is the welding scheduled surface of the lid portion 10 and the second welding scheduled surface 201 which is the welding scheduled surface of the main body portion 20 are interposed between the wires ( For example, it is a step of superposing the iron-chromium wire).
  • the overlapped welding scheduled surfaces are brought into a state of being pressed upward and downward, and in this state, an electric current is passed through the wire to generate Joule heat, and this heat is used for welding.
  • the lid portion 10 and the main body portion 20 can be welded.
  • the welding method of the 1st resin molding and the 2nd resin molding in this invention is not limited to said method.
  • the first resin molded body is a resin molded body that becomes a part of the welded body.
  • the first resin molded body is composed of a crystalline thermoplastic resin composition.
  • the type of crystalline thermoplastic resin is not particularly limited, and crystalline heat such as polyarylene sulfide resin such as polyphenylene sulfide resin, polyester resin such as polybutylene terephthalate resin, polyacetal resin such as polyoxymethylene resin, and various liquid crystalline resins.
  • a plastic resin can be used.
  • a plurality of types of crystalline thermoplastic resins may be used in combination.
  • the crystalline resin is crystallized in the first resin molded body.
  • this crystallized state makes it difficult to melt the resin molded bodies, and thus makes it difficult to increase the bonding strength between the resin molded bodies.
  • at least one of the first welding planned surface and the second welding planned surface, which are the parts to be joined is in a state where the crystallinity of the crystalline thermoplastic resin is low, Even when any crystalline thermoplastic resin is used, the bonding strength between the resin molded bodies can be increased.
  • the above-mentioned crystallized state is a cause. It is considered difficult to increase the joint strength between the molded bodies. However, according to the manufacturing method of the present invention, the bonding strength can be sufficiently increased.
  • the crystalline thermoplastic resin composition is within a range that does not greatly impair the effects of the present invention, other resins, various conventionally known inorganic / organic fillers, flame retardants, ultraviolet absorbers, heat stabilizers, light stabilizers. You may contain additives, such as an agent, a coloring agent, carbon black, a mold release agent, and a plasticizer.
  • the crystalline thermoplastic resin composition may be substantially composed of a crystalline resin, for example, containing only a small amount of impurities.
  • the method for manufacturing the first resin molded body will be described by taking the case of manufacturing the lid 10 as an example. Since this embodiment manufactures the first resin molded body by a specific method, the problem of low bonding strength can be solved.
  • the lid 10 (first resin molded body) uses a mold having a heat insulating layer formed on a part of the cavity surface, and the mold temperature is the cold crystallization temperature (T) of the resin constituting the first resin molded body.
  • c1 Manufactured under conditions of ⁇ 10 ° C. or lower.
  • the cold crystallization temperature (T c1 ) refers to the temperature at which crystallization occurs when the temperature of a resin molded with insufficient crystallization is increased.
  • the cold crystallization temperature (T c1 ) is a heat curve when the molten resin is rapidly cooled, solidified and pulverized, and heated at a rate of 10 ° C./min using a differential scanning calorimeter (DSC). It can be determined from the nick (bending point) or the crystallization exothermic peak.
  • the cavity refers to the entire space filled with the resin inside the mold.
  • the heat insulation layer is formed on substantially the entire surface other than the portion in contact with the first welding planned surface 101.
  • a heat insulation layer is formed as shown in FIG. FIG. 4 schematically shows a cross section of the cavity of the first mold 2 suitable for manufacturing the lid 10.
  • the first mold 2 includes a first cavity 3 for forming the shape of the lid 10 and a first heat insulating layer 4 formed on a part of the cavity surface of the first mold 2.
  • the surface of the 1st cavity 3 is comprised from the surface of the 1st heat insulation layer 4, and the metal surface in which the 1st heat insulation layer 4 of the said 1st metal mold
  • the first heat insulating layer 4 is formed on substantially the entire surface other than the portion in contact with the first welding planned surface 101. And the 1st heat insulation layer 4 is not formed in the whole surface of the part in contact with the 1st welding plan surface 101 in the cavity surface of the 1st metal mold
  • substantially the entire surface includes the entire surface.
  • the first heat insulating layer 4 may be any material as long as it has low heat conductivity and has heat resistance to such an extent that it does not cause problems even when it comes into contact with a high-temperature resin composition. It is not limited.
  • Examples of materials satisfying the heat resistance and thermal conductivity required for the first heat insulating layer 4 include resins having high heat resistance such as polyimide resin and low thermal conductivity, and porous ceramics. Hereinafter, these materials will be described.
  • polyimide resins include pyromellitic acid (PMDA) based polyimide, biphenyltetracarboxylic acid based polyimide, polyamideimide using trimellitic acid, bismaleimide based resin (bismaleimide / triazine based, etc.), benzophenone tetracarboxylic acid.
  • PMDA pyromellitic acid
  • biphenyltetracarboxylic acid based polyimide polyamideimide using trimellitic acid
  • bismaleimide based resin bismaleimide based resin (bismaleimide / triazine based, etc.)
  • benzophenone tetracarboxylic acid bismaleimide based resin
  • acetylene-terminated polyimide acetylene-terminated polyimide
  • thermoplastic polyimide thermoplastic polyimide, and the like.
  • the method for forming the first heat insulating layer 4 on the cavity surface of the first mold 2 is not particularly limited.
  • the first heat insulating layer 4 is preferably formed on the cavity surface of the first mold 2 by the following method.
  • a solution of a polymer precursor such as a polyimide precursor capable of forming a polymer heat insulating layer is applied to a desired metal surface of the first mold 2, heated to evaporate the solvent, and further heated to polymerize.
  • a method for forming the first heat insulating layer 4 such as a polyimide film
  • a method for vapor-deposition polymerization of a monomer of a heat-resistant polymer, for example, pyromellitic anhydride and 4,4-diaminodiphenyl ether, or a planar mold An appropriate bonding method or a method of forming the first heat insulating layer 4 by sticking the polymer heat insulating film to a desired portion of the metal surface of the first mold 2 using a polymer heat insulating film in the form of an adhesive tape. It is also possible to form a polyimide film and further form a chromium (Cr) film or a titanium nitride (TiN) film as a metal-based hard film on
  • the thermal conductivity required for the first heat insulating layer 4 composed of the above resin varies depending on the use and the like, but is particularly preferably 2 W / m ⁇ K or less.
  • the degree of crystallinity can be further increased at the portion of the resin molded body that contacts the first heat insulating layer 4.
  • the said heat conductivity points out the heat conductivity measured by the method as described in an Example.
  • the thickness of the first heat insulating layer 4 is not particularly limited, and can be appropriately set to a preferable thickness depending on the material used, the shape of the molded product, and the like.
  • the 1st heat insulation layer 4 is comprised from a polyimide resin, if the thickness of a heat insulation layer is 20 micrometers or more, since a sufficiently high heat insulation effect is acquired, it is preferable.
  • the thickness of the first heat insulating layer 4 formed on the cavity surface of the first mold 2 may be uniform or may include portions having different thicknesses.
  • porous ceramics include porous zirconia.
  • the zirconia contained in the porous zirconia is not particularly limited, and may be any of stabilized zirconia, partially stabilized zirconia, and unstabilized zirconia.
  • Stabilized zirconia is one in which cubic zirconia is stabilized even at room temperature, and is excellent in mechanical properties such as strength and toughness and wear resistance.
  • Partially stabilized zirconia refers to a state in which tetragonal zirconia partially remains even at room temperature, and when subjected to external stress, a martensitic transformation from tetragonal to monoclinic occurs, and is particularly advanced by the action of tensile stress. Suppresses crack growth and has high fracture toughness.
  • Unstabilized zirconia refers to zirconia that is not stabilized by a stabilizer. In addition, you may use combining at least 2 or more types selected from stabilized zirconia, partially stabilized zirconia, and unstabilized zirconia.
  • the stabilizer contained in the stabilized zirconia and the partially stabilized zirconia conventionally known general ones can be employed.
  • yttria, ceria, magnesia and the like can be mentioned.
  • the amount of the stabilizer used is not particularly limited, and the amount used can be appropriately set according to the application, the material used, and the like.
  • porous ceramics other than porous zirconia can be used, but porous zirconia has higher durability than other porous ceramics. For this reason, if the 1st metal mold
  • the raw material for forming the first heat insulating layer 4 may further contain conventionally known additives and the like in addition to the above zirconia and stabilizer as long as the effects of the present invention are not impaired.
  • the method for forming the first heat insulating layer 4 using the above raw materials is not particularly limited, but it is preferable to employ a thermal spraying method.
  • the thermal spraying method By adopting the thermal spraying method, the thermal conductivity of porous zirconia is easily adjusted to a desired range. Moreover, problems such as a significant decrease in the mechanical strength of the first heat insulating layer 4 due to excessive formation of bubbles in the porous zirconia do not occur.
  • the structure of the 1st heat insulation layer 4 becomes a thing suitable for the use of this invention by forming a heat insulation layer by thermal spraying.
  • Formation of the 1st heat insulation layer 4 by thermal spraying can be performed as follows, for example. First, the raw material is melted to form a liquid. The liquid is accelerated and collides with a desired metal surface of the first mold 2. Finally, the raw material that collides with and adheres to the desired metal surface of the first mold 2 is solidified. By doing in this way, the very thin 1st heat insulation layer 4 is formed in the desired metal surface of the 1st metal mold
  • FIG. The thickness of the 1st heat insulation layer 4 can be adjusted by making the melt
  • a conventionally known cooling means may be used, or the raw material may be solidified simply by leaving it to stand.
  • the thermal spraying method is not particularly limited, and a preferable method can be appropriately selected from conventionally known methods such as arc spraying, plasma spraying, and flame spraying.
  • the thermal conductivity of the first heat insulating layer 4 composed of porous ceramic can be adjusted as appropriate according to the use of the molded product. In the present invention, it is preferably 2 W / m ⁇ K or less, more preferably 0.3 W / m ⁇ K or more and 2 W / m ⁇ K or less. If the thermal conductivity is 0.3 W / m ⁇ K or more, the productivity of the injection molded product is greatly reduced due to a decrease in the strength of the first heat insulating layer 4 due to excessive bubbles in the first heat insulating layer 4. This is preferable because there is almost no occurrence.
  • the thermal conductivity of the first heat insulating layer 4 is 0.7 W / m ⁇ K or more, the strength of the first heat insulating layer 4 is greatly reduced due to excessive bubbles in the first heat insulating layer 4. This is preferable because it tends to be suppressed to a small range.
  • the value obtained by the method as described in an Example is employ
  • the heat conductivity ( ⁇ ) of the heat insulating layer is obtained by obtaining the heat conductivity of each of the low density layer and the high layer, and the heat conductivity of the low density layer ( ⁇ l).
  • [1 / ⁇ ] [t / ⁇ l] + [(1) where the thermal conductivity ( ⁇ h) of the high-density layer and the thickness ratio (t) of the low-density layer to the total thickness of the heat insulating layer -T) / ⁇ h].
  • the thickness of the first heat insulation layer 4 when the first heat insulation layer 4 is composed of porous zirconia is not particularly limited, but is preferably 200 ⁇ m or more, more preferably 500 ⁇ m or more and 1000 ⁇ m or less. If it is 500 micrometers or more, it is preferable because the intensity
  • the method for manufacturing the lid 10 will be specifically described by taking the case of using the first mold 2 shown in FIG. 4 as an example.
  • a molten crystalline thermoplastic resin composition is injected into the first mold 2.
  • the surface of the first cavity 3 is in contact with the injected crystalline thermoplastic resin composition.
  • the crystalline thermoplastic resin composition in contact with the surface of the first heat insulating layer 4 is heated by the heat of the molten crystalline thermoplastic resin composition due to the heat insulating effect. It becomes difficult to be discharged outside. As a result, the crystalline thermoplastic resin composition hardens while being sufficiently crystallized.
  • the heat of the molten crystalline thermoplastic resin composition in contact with the metal surface on which the heat insulating layer of the first mold 2 is not formed is quickly discharged out of the mold through the first mold 2. Is done.
  • the crystalline thermoplastic resin composition in contact with the metal surface on which the heat insulating layer of the first mold 2 is not formed is rapidly cooled, and thus solidifies without progressing crystallization.
  • the mold temperature is adjusted to a cold crystallization temperature (T c1 ) of ⁇ 10 ° C. or lower of the crystalline thermoplastic resin.
  • T c1 cold crystallization temperature
  • the mold temperature condition is determined by paying attention to the crystalline thermoplastic resin as the main component.
  • the crystallinity of the crystalline resin existing in the vicinity of the first welding planned surface 101 is lowered.
  • the vicinity of the first welding planned surface 101 is easily melted by heat applied between the first welding planned surface 101 and the second welding planned surface 201 during welding, and the first resin molded body and the second resin are melted. Bonding strength with the molded body is increased.
  • the amount of energy required for joining can be reduced.
  • the crystalline thermoplastic resin is sufficiently crystallized due to the effect of the heat insulating layer.
  • the lid 10 that is the resin molded body to be obtained is exposed to a high temperature environment or the like, the dimensional change due to the crystallization of the crystalline thermoplastic resin is small.
  • the first welding planned surface 101 on the cavity surface of the first mold 2 is used.
  • the first heat insulating layer 4 is not formed in a portion other than the portion in contact with.
  • the portion where the first heat insulating layer 4 is not formed may include a shape including the first welding scheduled surface 101. If it can be determined that the bonding strength is sufficiently high, the first heat-insulating layer 4 is formed on the cavity surface of the first mold 2 at the portion in contact with the first welding planned surface 101 as in this embodiment. There may be some parts.
  • the part to be welded may be plural.
  • a heat insulating layer is formed on substantially the entire surface other than the portion in contact with the planned welding surface on all the planned welding surfaces on the cavity surface of the mold for manufacturing the first resin molded body.
  • the 2nd resin molding body is manufactured using the metal mold
  • the heat-insulating layer may not be formed on the mold for producing the first resin molded body.
  • the mold temperature is generally set to about T c1 + 15 ° C.
  • sufficient crystallinity refers to the case where a crystalline thermoplastic resin composition is molded by using a mold in which a heat insulating layer is not formed and setting the mold temperature condition to T c1 + 15 ° C. The crystallinity of the crystalline thermoplastic resin.
  • the second resin molded body is a resin molded body that becomes a part of the welded body.
  • the type of resin that can be contained is not particularly limited, and various thermoplastic resins such as olefin resins, vinyl resins, styrene resins, acrylic resins, polyester resins, polycarbonate resins, polyarylate resins, polysulfones. Resin, polyphenylene oxide resin, polyether sulfone resin, polyetherimide resin, polyether ketone resin, heat-resistant cyclic olefin resin, various liquid crystalline polymers, and the like.
  • a second resin molded body composed of a resin of the same type or system as the resin constituting the first resin molded body, or a resin composition containing the resin.
  • the method for producing the second resin molded body is not particularly limited, and general methods such as injection molding, extrusion molding, compression molding, blow molding, injection compression molding, transfer molding, and vacuum molding can be employed.
  • a 2nd resin molding is manufactured by the injection molding method using the crystalline thermoplastic resin composition as a raw material, and the metal mold
  • the manufacturing method of the second resin molded body will be described by taking the case where the main body portion 20 is manufactured by an injection molding method as an example.
  • the heat insulating layer is formed on substantially the entire surface other than the portion in contact with the second welding planned surface 201.
  • a heat insulation layer is formed as shown in FIG. FIG. 5 schematically shows a cross section of the cavity of the second mold 5 suitable for manufacturing the main body 20.
  • the second mold 5 includes a second cavity 6 for forming the shape of the main body 20 and a second heat insulating layer 7 formed on a part of the cavity surface of the second mold 5.
  • the surface of the 2nd cavity 6 is comprised from the surface of the 2nd heat insulation layer 7, and the metal surface in which the 2nd heat insulation layer 7 of the said 2nd metal mold
  • the second heat insulating layer 7 is formed on substantially the entire surface other than the portion in contact with the second welding planned surface 201. And the 2nd heat insulation layer 7 is not formed in the whole surface of the part in contact with the 2nd planned welding surface 201 in the cavity surface of the 2nd metal mold
  • the main body 20 that is an example of the second resin molded body is crystalline at the portion that contacts the second heat insulating layer 7 during molding.
  • the crystallinity of the thermoplastic resin is increased, and the crystallinity of the crystalline thermoplastic resin is suppressed to a low level in a portion not in contact with the second heat insulating layer 7.
  • T c1 cold crystallization temperature
  • the second heat insulating layer 7 is formed on most of the cavity surface of the second mold 5, the main body 20 may be exposed to a high temperature environment after molding.
  • the dimensional change due to crystallization of the crystalline thermoplastic resin is small.
  • the second heat insulating layer 7 is formed on most of the cavity surface of the second mold 5 in order to prevent the dimensional change of the main body 20 as described above, and this effect is achieved.
  • the area for forming the second heat insulating layer 7 on the cavity surface may be determined within the range.
  • FIG. 6 shows an exploded perspective view of the welded body 8.
  • the welded body 8 includes a first resin molded body 80, a second resin molded body 81, and a second resin molded body 82. There are a total of four parts to be welded.
  • this welded body is used as the first resin molded body, and the other second
  • the two resin molded bodies 82 or 81 may be welded, or the first resin molded body 80 and the second resin molded bodies 81 and 82 may be welded simultaneously. In the case of simultaneous welding, there are four second welding scheduled surfaces.
  • Polyphenylene sulfide resin manufactured by Polyplastics, “Fortron (registered trademark) 1140A1”, cold crystallization temperature (T c1 ) is 125 ° C.
  • Insulating layer forming material Polyimide (thermal conductivity 0.22 (W / m ⁇ K))
  • the thermal conductivity of the heat insulating layer is measured by the laser flash method, the thermal diffusivity by DSC, the specific heat by DSC, and the specific gravity by water displacement method (based on the JIS Z8807 solid specific gravity measurement method). Rate ⁇ specific heat ⁇ specific gravity].
  • a container including a first resin molded body (lid) and a second resin molded body (main body) having a cross-sectional shape as shown in FIG. 7 was manufactured (the unit of the numbers in FIG. 7 is mm).
  • the first resin molded body has a circular box shape as shown in FIG.
  • FIG. 8 (a) (a diagram showing a surface to be welded and a portion where the heat insulation layer is not formed), a portion that comes into contact with the second resin molded body at the time of welding was defined as the first surface to be welded.
  • the portion represented by is the first welding scheduled surface.
  • a mold having a cavity with the above dimensions was prepared.
  • die (used in an Example) provided with a heat insulation layer and the metal mold
  • die provided with a heat insulation layer, as shown to Fig.8 (a)
  • the heat insulation layer was not formed in the vicinity containing the 1st welding plan surface, but the heat insulation layer was formed in the other part.
  • the heat insulating layer may not be formed only on the first welding planned surface, and the heat insulating layer may be formed in other portions. However, in the examples, the dimensional change can be ignored and the ease of forming the heat insulating layer is considered.
  • the thickness of the heat insulating layer was 200 ⁇ m. Using these molds, first resin molded bodies necessary for Examples and Comparative Examples were produced. About the conditions of the metal mold
  • the second resin molded body has a circular box shape having an inclined surface with an inclination of 50 ° as shown in FIG.
  • the said inclined surface which contacts with the 1st resin molding at the time of welding was made into the 2nd welding plan surface.
  • die which has the cavity of this dimension
  • the mold having the heat insulation layer is not formed with the heat insulation layer on the second welding scheduled surface (the portion indicated by the thick line in FIG. 8 (b)), A heat insulating layer was formed.
  • the thickness of the heat insulating layer was 200 ⁇ m.
  • the second resin molded bodies necessary for Examples and Comparative Examples were produced.
  • the conditions of the mold temperature at the time of manufacturing a 2nd resin molding it is 100 degreeC (Example 1, comparative example 3) and 150 degreeC (Example 2, comparative example 2), respectively.
  • the ultrasonic wave frequency is 20 kHz
  • the amplitude is 60 ⁇ m
  • the air pressure is 0.1 MPa under the conditions of the set sinking amount shown in Table 1. Then, ultrasonic welding was performed, and a welded body was manufactured with the first resin molded body and the second resin molded body.
  • the weld strength is obtained by cutting the welded body at a cut portion (part indicated by a dotted line) shown in FIG. 9 after manufacturing the welded body, removing the second resin molded body side of the cut welded body, and including the welded surface.
  • the first resin molded body side as a test piece, fixing the vicinity of the welding position of the first resin molded body with the second resin molded body (range of ⁇ 48 to ⁇ 51), using a universal testing machine (Orientec, UTA50KN) Then, a ⁇ 48 measuring jig was inserted into the cut and removed portion of the first resin molded body, the first resin molded body and the second resin molded body were subjected to tensile shear at 5 mm / min, and the welding strength was measured. The measurement results are shown in Table 1. Moreover, the annealing process (140 degreeC x 2 hours) was performed about the welded body of the Example and the welded body of the comparative example. The welded body after the annealing treatment was visually confirmed, and the presence or absence of peeling of the welded surface was confirmed.
  • a universal testing machine Orientec, UTA50KN
  • the welds of the example showed higher weld strength than the welds of the comparative example even under the same set sinking conditions.
  • the resin molded body constituting the welded body obtained by the manufacturing method of the present invention is manufactured using a mold in which a heat insulating layer is formed, crystallization of the crystalline thermoplastic resin in the resin molded body is performed. The degree is sufficiently raised. For this reason, even if it anneals with respect to a welded body, the dimensional change of a resin molding is small and peeling etc. do not generate

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JP6700064B2 (ja) * 2016-02-25 2020-05-27 Ntn株式会社 電動式直動アクチュエータおよび電動ブレーキ装置
CN111941069B (zh) * 2020-08-07 2021-12-24 惠州中京电子科技有限公司 一种5g通讯立体fpc天线的做法

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