JPS5686728A - Method and device for continuous bridging of foamable thermoplastic resin material - Google Patents

Method and device for continuous bridging of foamable thermoplastic resin material

Info

Publication number
JPS5686728A
JPS5686728A JP16533579A JP16533579A JPS5686728A JP S5686728 A JPS5686728 A JP S5686728A JP 16533579 A JP16533579 A JP 16533579A JP 16533579 A JP16533579 A JP 16533579A JP S5686728 A JPS5686728 A JP S5686728A
Authority
JP
Japan
Prior art keywords
pressure
resin material
parent material
heated
thermoplastic resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16533579A
Other languages
Japanese (ja)
Inventor
Kazuhiko Masuda
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP16533579A priority Critical patent/JPS5686728A/en
Publication of JPS5686728A publication Critical patent/JPS5686728A/en
Pending legal-status Critical Current

Links

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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To bridge a resin material while supressing to make foams by a method wherein a foamable thermoplastic resin material is continuously heated under a pressure and then, it is cooled to be placed in a normal pressure. CONSTITUTION:A pressure applying part 10 and a cooling part 15 are coupled and N2, etc. is induced into the interior to form a pressure applying chamber 3 having an inner pressure of approximately 10 barometic pressure. A parent material 2 is directly pushed out into the pressure applying chamber 3 via a junction part 4 by means of an extruding machine 1 and this is made to float upto a heating liquid bath 11 of a heating part 10 and further, this is heated from the lower side, and along with this, the upper face is heated with a plane type exothermic body 8 to form a bridge. (At this time, since the parent material is applied with pressure in a high pressure atmosphere, the generation of inner foams due to a decomposition gas generated from a bridging agent and a foaming agent is sharply suppressed.) Next thereto, the back side of the parent material 2 is flushed with a flushing water from a flush water jet nozzle 13 and thereafter, it is cooled passing through a cooling water 17 of a water tank 14 and then passes through a pick up port 5 and is taken out into the air and is wound around a winding machine 23.
JP16533579A 1979-12-18 1979-12-18 Method and device for continuous bridging of foamable thermoplastic resin material Pending JPS5686728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16533579A JPS5686728A (en) 1979-12-18 1979-12-18 Method and device for continuous bridging of foamable thermoplastic resin material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16533579A JPS5686728A (en) 1979-12-18 1979-12-18 Method and device for continuous bridging of foamable thermoplastic resin material

Publications (1)

Publication Number Publication Date
JPS5686728A true JPS5686728A (en) 1981-07-14

Family

ID=15810371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16533579A Pending JPS5686728A (en) 1979-12-18 1979-12-18 Method and device for continuous bridging of foamable thermoplastic resin material

Country Status (1)

Country Link
JP (1) JPS5686728A (en)

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