SE8000748L - SET TO MANUFACTURE FORM CARBON SYNTHETIC MATERIAL, EXAMPLE OF FOAM POLYSTEROL - Google Patents
SET TO MANUFACTURE FORM CARBON SYNTHETIC MATERIAL, EXAMPLE OF FOAM POLYSTEROLInfo
- Publication number
- SE8000748L SE8000748L SE8000748A SE8000748A SE8000748L SE 8000748 L SE8000748 L SE 8000748L SE 8000748 A SE8000748 A SE 8000748A SE 8000748 A SE8000748 A SE 8000748A SE 8000748 L SE8000748 L SE 8000748L
- Authority
- SE
- Sweden
- Prior art keywords
- mould
- foam
- polysterol
- agent
- synthetic material
- Prior art date
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)
- Molding Of Porous Articles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Carbon And Carbon Compounds (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. <IMAGE>
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 (1)
Publication Number | Publication Date |
---|---|
SE8000748L true SE8000748L (en) | 1980-07-31 |
Family
ID=25777600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8000748A SE8000748L (en) | 1979-01-30 | 1980-01-30 | SET TO MANUFACTURE FORM CARBON SYNTHETIC MATERIAL, EXAMPLE OF FOAM POLYSTEROL |
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)
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)
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 |
-
1980
- 1980-01-09 CH CH14680A patent/CH642903A5/en not_active IP Right Cessation
- 1980-01-09 FR FR8000379A patent/FR2447803A1/en active Granted
- 1980-01-15 GB GB8001259A patent/GB2040788B/en not_active Expired
- 1980-01-30 SE SE8000748A patent/SE8000748L/en not_active Application Discontinuation
- 1980-01-31 ES ES488064A patent/ES8100153A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH642903A5 (en) | 1984-05-15 |
ES488064A0 (en) | 1980-11-01 |
FR2447803B1 (en) | 1983-06-17 |
GB2040788B (en) | 1982-10-06 |
GB2040788A (en) | 1980-09-03 |
FR2447803A1 (en) | 1980-08-29 |
ES8100153A1 (en) | 1980-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8000748-7 |