JPS5463170A - Foamed article and its preparation - Google Patents

Foamed article and its preparation

Info

Publication number
JPS5463170A
JPS5463170A JP13102777A JP13102777A JPS5463170A JP S5463170 A JPS5463170 A JP S5463170A JP 13102777 A JP13102777 A JP 13102777A JP 13102777 A JP13102777 A JP 13102777A JP S5463170 A JPS5463170 A JP S5463170A
Authority
JP
Japan
Prior art keywords
beads
parts
expansion
mold
expansion beads
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
JP13102777A
Other languages
Japanese (ja)
Other versions
JPS6158292B2 (en
Inventor
Mikio Bessho
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 JP13102777A priority Critical patent/JPS5463170A/en
Publication of JPS5463170A publication Critical patent/JPS5463170A/en
Publication of JPS6158292B2 publication Critical patent/JPS6158292B2/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
    • B29C44/02—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
    • B29C44/04—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0461—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
    • 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
    • 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
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould

Landscapes

  • Molding Of Porous Articles (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To prepare a large-sized molded article in high efficiency, by using two or more pre-foamed synthetic resin beads having different resin components and/ or foaming ratios to different parts of the article. CONSTITUTION:A mold 3 is divided into parts A to be filled with high-expansion beads and parts B to filled with low-expansion beads. The parts A and B are furnished with a high-expansion beads-introducing opeing 5 and a low-expansion beads-introducing opening 4, respectively. The openings 5, 4 are connected with metering hoppers 1, 2, respecitvely. The high-expansion beads 7 are introduced to the part of the mold 3 corresponding to the skin layer of the molded article, and then low-expansion beads 6 and high-expansion beads 7 are introduced through the openings 4 and 5 to the respective parts of the mold. The beads are integrated by heating in the mold. The process can be carried out using beads of different resins. For example, when pre-foamed polystyrene and pre-foamed polyethylene are used in the process, both resins are physically intermeshed together to form an integrated article.
JP13102777A 1977-10-31 1977-10-31 Foamed article and its preparation Granted JPS5463170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13102777A JPS5463170A (en) 1977-10-31 1977-10-31 Foamed article and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13102777A JPS5463170A (en) 1977-10-31 1977-10-31 Foamed article and its preparation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1107390A Division JPH02117817A (en) 1989-04-28 1989-04-28 Foam molding apparatus

Publications (2)

Publication Number Publication Date
JPS5463170A true JPS5463170A (en) 1979-05-21
JPS6158292B2 JPS6158292B2 (en) 1986-12-11

Family

ID=15048290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13102777A Granted JPS5463170A (en) 1977-10-31 1977-10-31 Foamed article and its preparation

Country Status (1)

Country Link
JP (1) JPS5463170A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110316198A1 (en) * 2009-03-05 2011-12-29 Basf Se Elastic expanded polymer foam based on polyolefin/styrene polymer mixtures
JP2014168901A (en) * 2013-03-04 2014-09-18 Sekisui Plastics Co Ltd Method for molding foamed molding
US10488753B2 (en) 2015-09-08 2019-11-26 Canon Kabushiki Kaisha Substrate pretreatment and etch uniformity in nanoimprint lithography
US10509313B2 (en) 2016-06-28 2019-12-17 Canon Kabushiki Kaisha Imprint resist with fluorinated photoinitiator and substrate pretreatment for reducing fill time in nanoimprint lithography

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5460366A (en) * 1977-10-22 1979-05-15 Sekisui Plastics Simultaneous molding process using varied raw material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5460366A (en) * 1977-10-22 1979-05-15 Sekisui Plastics Simultaneous molding process using varied raw material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110316198A1 (en) * 2009-03-05 2011-12-29 Basf Se Elastic expanded polymer foam based on polyolefin/styrene polymer mixtures
US8741973B2 (en) * 2009-03-05 2014-06-03 Basf Se Elastic expanded polymer foam based on polyolefin/styrene polymer mixtures
JP2014168901A (en) * 2013-03-04 2014-09-18 Sekisui Plastics Co Ltd Method for molding foamed molding
US10488753B2 (en) 2015-09-08 2019-11-26 Canon Kabushiki Kaisha Substrate pretreatment and etch uniformity in nanoimprint lithography
US10509313B2 (en) 2016-06-28 2019-12-17 Canon Kabushiki Kaisha Imprint resist with fluorinated photoinitiator and substrate pretreatment for reducing fill time in nanoimprint lithography

Also Published As

Publication number Publication date
JPS6158292B2 (en) 1986-12-11

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