JPS571732A - Method of forming synthetic resin expanded body - Google Patents

Method of forming synthetic resin expanded body

Info

Publication number
JPS571732A
JPS571732A JP7514980A JP7514980A JPS571732A JP S571732 A JPS571732 A JP S571732A JP 7514980 A JP7514980 A JP 7514980A JP 7514980 A JP7514980 A JP 7514980A JP S571732 A JPS571732 A JP S571732A
Authority
JP
Japan
Prior art keywords
cavity
synthetic resin
lower mold
stock solution
upper mold
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
JP7514980A
Other languages
Japanese (ja)
Inventor
Kazuhiro Yamauchi
Taro Umemura
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.)
NHK Spring Co Ltd
Original Assignee
NHK Spring 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 NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Priority to JP7514980A priority Critical patent/JPS571732A/en
Publication of JPS571732A publication Critical patent/JPS571732A/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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/16—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining shaped by the expansion of the material

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain the captioned expanded body useful for a pad for a seat and the like and having no crack or the like on the surface layer thereof with a small amount of consumed parting agent and an easy temperature control by a method wherein stock solution is poured into a cavity between an upper mold and a lower mold on which the thin platelike synthetic resin expandable body is disposed to expand it. CONSTITUTION:In case the synthetic resin expanded body is formed by foaming by pouring the stock solution 6 into the cavity 3 between the upper mold 1 and the lower mold 2, the upper mold 1 and the lower mold 2 are opposed so as to be ascendable and descendable relatively to form the cavity 3 having a shape substantially equal to a product (a) such as the pad for a seat or the like between both of the molds. The cavity 3 is communicated with open air through an opening 4 formed between the molds 1, 2. The thin platelike synthetic resin expandable body 5 is disposed on the interior of the lower mold 2 forming the cavity 3 and a proper amount of the stock solution 6 such as urethane or the like is poured thereon, then, the upper mold 1 is arranged at a predetermined position. The expandable body 5 is abutted against the surface of the lower mold 2 by a pressure due to the foaming and expansion of the stock solution 6 and is integrated with an expanded body 7, thereby forming the product (a).
JP7514980A 1980-06-04 1980-06-04 Method of forming synthetic resin expanded body Pending JPS571732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7514980A JPS571732A (en) 1980-06-04 1980-06-04 Method of forming synthetic resin expanded body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7514980A JPS571732A (en) 1980-06-04 1980-06-04 Method of forming synthetic resin expanded body

Publications (1)

Publication Number Publication Date
JPS571732A true JPS571732A (en) 1982-01-06

Family

ID=13567846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7514980A Pending JPS571732A (en) 1980-06-04 1980-06-04 Method of forming synthetic resin expanded body

Country Status (1)

Country Link
JP (1) JPS571732A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638388A1 (en) * 1988-10-31 1990-05-04 Ikeda Bussan Co MOLD FOR THE MANUFACTURE OF A PLASTIC FOAM ARTICLE COVERED WITH A COVER
EP0417516A2 (en) * 1989-09-13 1991-03-20 Grammer Ag Method for production of foam-backed upholstery and apparatus for carrying out the process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638388A1 (en) * 1988-10-31 1990-05-04 Ikeda Bussan Co MOLD FOR THE MANUFACTURE OF A PLASTIC FOAM ARTICLE COVERED WITH A COVER
EP0417516A2 (en) * 1989-09-13 1991-03-20 Grammer Ag Method for production of foam-backed upholstery and apparatus for carrying out the process

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