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ES8100153A1 - Moulding foamed plastics - Google Patents

Moulding foamed plastics

Info

Publication number
ES8100153A1
ES8100153A1 ES488064A ES488064A ES8100153A1 ES 8100153 A1 ES8100153 A1 ES 8100153A1 ES 488064 A ES488064 A ES 488064A ES 488064 A ES488064 A ES 488064A ES 8100153 A1 ES8100153 A1 ES 8100153A1
Authority
ES
Spain
Prior art keywords
mould
agent
foamed plastics
moulding
plastics
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.)
Expired
Application number
ES488064A
Other languages
Spanish (es)
Other versions
ES488064A0 (en
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.)
JOACHIM TEUBERT ING
Original Assignee
JOACHIM TEUBERT ING
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
Priority claimed from DE2903495A external-priority patent/DE2903495C2/en
Priority claimed from DE2911120A external-priority patent/DE2911120C2/en
Application filed by JOACHIM TEUBERT ING filed Critical JOACHIM TEUBERT ING
Publication of ES488064A0 publication Critical patent/ES488064A0/en
Publication of ES8100153A1 publication Critical patent/ES8100153A1/en
Expired 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
    • B29C44/3461—Making or treating expandable particles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

In a method of making moulded objects (62) from foamed plastics, e.g foamed polystyrene, the plastics raw material is introduced in the form of pre-expanded beads containing an expanding agent into a divisible mould (2) and is subjected in this mould to the action of a hot, gaseous foaming agent, which causes the beads to fuse together while further expanding. The thus obtained foam is, before the moulding is removed from the mould, stabilized by forcing through it a stabilizing agent in the form of a gas, e.g. air. The foaming and stabilizing operation can be repeated. A vacuum can also be applied to the moulded object during the working cycle. The relevant mould may possess, instead of the usual nozzles (26) or slits, mould inner walls (28, 30) of porous material, e.g. sintered metal.
ES488064A 1979-01-30 1980-01-31 Moulding foamed plastics Expired ES8100153A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2903495A DE2903495C2 (en) 1979-01-30 1979-01-30 Process for the production of molded bodies from foamed plastic, in particular from foamed polystyrene
DE2911120A DE2911120C2 (en) 1979-03-21 1979-03-21 Process for producing molded articles from foamed plastic, such as foamed polystyrene

Publications (2)

Publication Number Publication Date
ES488064A0 ES488064A0 (en) 1980-11-01
ES8100153A1 true ES8100153A1 (en) 1980-11-01

Family

ID=25777600

Family Applications (1)

Application Number Title Priority Date Filing Date
ES488064A Expired ES8100153A1 (en) 1979-01-30 1980-01-31 Moulding foamed plastics

Country Status (5)

Country Link
CH (1) CH642903A5 (en)
ES (1) ES8100153A1 (en)
FR (1) FR2447803A1 (en)
GB (1) GB2040788B (en)
SE (1) SE8000748L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6547547B2 (en) * 2000-02-01 2003-04-15 Daisen Industry Co., Ltd. Apparatus for molding composite foam molding element
US20010021402A1 (en) * 2000-03-13 2001-09-13 Iwao Nohara Foam molding die apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1274755A (en) * 1960-10-17 1961-10-27 Wanner Ag Process for shaping materials to be shaped or foamed in molds
DE1778819A1 (en) * 1968-06-08 1972-03-23 Gruenzweig & Hartmann Foam mold for foaming synthetic resin compounds
DE1779415A1 (en) * 1968-08-09 1971-11-18 Basf Ag Process for the production of molded articles
GB1534696A (en) * 1976-03-26 1978-12-06 Precision Rams Ltd Manufacture of insulating blocks

Also Published As

Publication number Publication date
GB2040788B (en) 1982-10-06
CH642903A5 (en) 1984-05-15
FR2447803A1 (en) 1980-08-29
GB2040788A (en) 1980-09-03
SE8000748L (en) 1980-07-31
ES488064A0 (en) 1980-11-01
FR2447803B1 (en) 1983-06-17

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