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JPS557500A - In-mold particle forming method for formed polyolefin synthetic resin particle - Google Patents

In-mold particle forming method for formed polyolefin synthetic resin particle

Info

Publication number
JPS557500A
JPS557500A JP8713979A JP8713979A JPS557500A JP S557500 A JPS557500 A JP S557500A JP 8713979 A JP8713979 A JP 8713979A JP 8713979 A JP8713979 A JP 8713979A JP S557500 A JPS557500 A JP S557500A
Authority
JP
Japan
Prior art keywords
mold
filling
particles
valve
particle
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
JP8713979A
Other languages
Japanese (ja)
Inventor
Tsuneo Kitamura
Itaru Hatano
Sueo Takahama
Masatoshi Iwasaki
Susumu Fujimura
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP8713979A priority Critical patent/JPS557500A/en
Publication of JPS557500A publication Critical patent/JPS557500A/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
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Molding Of Porous Articles (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To speed up the filling of particles into a mold, to increase the filling quantity, and to facilitate even filling into a complicate mold by keeping the mold at reduced pressure, pressurizing a particle container tank to a pressure above the atmospheric, and opening a valve. CONSTITUTION:When foamable particles are filled into a mold which has a small hole and can be closed but cannot be sealed, use is made of an in-mold foaming forming device comprising a mold connected with a particle container tank by a filling hose fitted with a valve. Keeping the mold at a reduced pressure and pressurizing the tnak to a pressure above the atmospheric and below 3 kg/cm<2>, the valve is opened so as to feed the particles into the mold rapidly, to increase the filling quantity, and to facilitate the filling into a complicate mold. Then heat is applied so as to allow the particles to foam and to fuse the particles together, to produce a foamed body which is in the proper shape and has reduced contraction.
JP8713979A 1979-07-09 1979-07-09 In-mold particle forming method for formed polyolefin synthetic resin particle Pending JPS557500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8713979A JPS557500A (en) 1979-07-09 1979-07-09 In-mold particle forming method for formed polyolefin synthetic resin particle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8713979A JPS557500A (en) 1979-07-09 1979-07-09 In-mold particle forming method for formed polyolefin synthetic resin particle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP48024134A Division JPS49112970A (en) 1973-02-27 1973-02-27

Publications (1)

Publication Number Publication Date
JPS557500A true JPS557500A (en) 1980-01-19

Family

ID=13906626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8713979A Pending JPS557500A (en) 1979-07-09 1979-07-09 In-mold particle forming method for formed polyolefin synthetic resin particle

Country Status (1)

Country Link
JP (1) JPS557500A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634940A (en) * 1986-06-26 1988-01-09 Mitsubishi Yuka Badische Co Ltd Method for molding olefinic resin foamed particles in mold
JPH01156338A (en) * 1987-12-11 1989-06-19 Kanegafuchi Chem Ind Co Ltd Prefoamed polypropylene resin particle and production thereof
JPH01263033A (en) * 1988-04-15 1989-10-19 Toyo Mach & Metal Co Ltd Foam molding method for thermoplastic synthetic resin block
JP2017132127A (en) * 2016-01-28 2017-08-03 Ｄａｉｓｅｎ株式会社 Molding method of expanded resin product

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634940A (en) * 1986-06-26 1988-01-09 Mitsubishi Yuka Badische Co Ltd Method for molding olefinic resin foamed particles in mold
JPH0757498B2 (en) * 1986-06-26 1995-06-21 三菱化学ビーエーエスエフ株式会社 Molding method of olefin resin foam particles
JPH01156338A (en) * 1987-12-11 1989-06-19 Kanegafuchi Chem Ind Co Ltd Prefoamed polypropylene resin particle and production thereof
JPH01263033A (en) * 1988-04-15 1989-10-19 Toyo Mach & Metal Co Ltd Foam molding method for thermoplastic synthetic resin block
JP2017132127A (en) * 2016-01-28 2017-08-03 Ｄａｉｓｅｎ株式会社 Molding method of expanded resin product

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