JPS57137122A - Manufacture of thermoplastic resin foamed plate - Google Patents

Manufacture of thermoplastic resin foamed plate

Info

Publication number
JPS57137122A
JPS57137122A JP56023719A JP2371981A JPS57137122A JP S57137122 A JPS57137122 A JP S57137122A JP 56023719 A JP56023719 A JP 56023719A JP 2371981 A JP2371981 A JP 2371981A JP S57137122 A JPS57137122 A JP S57137122A
Authority
JP
Japan
Prior art keywords
frame
tube
thermoplastic resin
mouth piece
expanded
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
JP56023719A
Other languages
Japanese (ja)
Other versions
JPH021003B2 (en
Inventor
Tadayasu Tsubone
Mikio Ishikawa
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.)
Sekisui Kaseihin Kogyo KK
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics Co Ltd
Sekisui Kaseihin Kogyo KK
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 Sekisui Plastics Co Ltd, Sekisui Kaseihin Kogyo KK filed Critical Sekisui Plastics Co Ltd
Priority to JP56023719A priority Critical patent/JPS57137122A/en
Publication of JPS57137122A publication Critical patent/JPS57137122A/en
Publication of JPH021003B2 publication Critical patent/JPH021003B2/ja
Granted 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
    • B29C44/507—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 an annular die
    • 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
    • B29L2023/00—Tubular articles

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To obtain a highly expanded resin plate with good surface condition without any wrinkle by a method in which a thermoplastic resin containing a blowing agent is extruded into a tubular form through a mouth piece, directed into a frame of a specific shape, expanded there, and then clamped between rolls. CONSTITUTION:A thermoplastic resin containing a blowing agent is melted and extruded into a tubular form through a mouth piece 22, and then passed along the inner wall of a frame 3 whose mouth piece side portion 31 is provided with a funneled inner cavity expanding toward its tip in its inside and whose roll side portion 32 is also provided with an inner cavity of a practically similar cross section in its inside. The tube coming from the frame 3 is flattened and put between paired rolls 4 in such a way that the inner surfaces of the tube while they are still in unhardened state are bonded with each other to form an expanded plate. In this case, compressed air is fed into the tube a from a pipe 24 to increase forcibly the inner diameter of the tube a until it is closely contacted with the inner wall of the frame 3.
JP56023719A 1981-02-19 1981-02-19 Manufacture of thermoplastic resin foamed plate Granted JPS57137122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023719A JPS57137122A (en) 1981-02-19 1981-02-19 Manufacture of thermoplastic resin foamed plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023719A JPS57137122A (en) 1981-02-19 1981-02-19 Manufacture of thermoplastic resin foamed plate

Publications (2)

Publication Number Publication Date
JPS57137122A true JPS57137122A (en) 1982-08-24
JPH021003B2 JPH021003B2 (en) 1990-01-10

Family

ID=12118129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023719A Granted JPS57137122A (en) 1981-02-19 1981-02-19 Manufacture of thermoplastic resin foamed plate

Country Status (1)

Country Link
JP (1) JPS57137122A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107008U (en) * 1990-02-20 1991-11-05

Also Published As

Publication number Publication date
JPH021003B2 (en) 1990-01-10

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