FR2311651A1 - Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles - Google Patents

Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles

Info

Publication number
FR2311651A1
FR2311651A1 FR7515841A FR7515841A FR2311651A1 FR 2311651 A1 FR2311651 A1 FR 2311651A1 FR 7515841 A FR7515841 A FR 7515841A FR 7515841 A FR7515841 A FR 7515841A FR 2311651 A1 FR2311651 A1 FR 2311651A1
Authority
FR
France
Prior art keywords
moulding
mould
tool
expanded
quicker
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
FR7515841A
Other languages
French (fr)
Other versions
FR2311651B3 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7515841A priority Critical patent/FR2311651A1/en
Priority to BE167031A priority patent/BE841832A/en
Priority to CH633176A priority patent/CH605091A5/xx
Priority to SE7605713A priority patent/SE411725B/en
Priority to DK223276A priority patent/DK223276A/en
Priority to NO761713A priority patent/NO761713L/no
Priority to GB21144/76A priority patent/GB1523506A/en
Priority to NL7605462A priority patent/NL7605462A/en
Priority to AU14169/76A priority patent/AU502217B2/en
Priority to DE2622903A priority patent/DE2622903C2/en
Publication of FR2311651A1 publication Critical patent/FR2311651A1/en
Priority to US05/895,452 priority patent/US4260571A/en
Application granted granted Critical
Publication of FR2311651B3 publication Critical patent/FR2311651B3/fr
Priority to HK477/79A priority patent/HK47779A/en
Priority to MY8/80A priority patent/MY8000008A/en
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
    • B29C44/34—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

Abstract

Mouldings of expanded plastics materials produced by (a) injecting a predetermined quantity of non-expanded pellets into a (steam-) heated mould to expand and partially melt and agglomerate the pellets, (b) extracting the soft preform from the hot mould to relax in a controlled atmos., (c) loading the preform into a cooler mould, and (d) extracting the chilled moulding for cooling to ambient temp. Suitable for producing shaped packaging or moulded thermal insulation from expanded polystyrene. Use of two tools avoids transfer and waste associated with changing the temp. of a single tool for the thermal cycle necessary to expand, fuse and chill a moulding of material which is a poor heat transfer medium and of low mass c.f. with the mass of the tool. Can also reduce cycle times. Tool designs are simplified for hot or cold duties independently.
FR7515841A 1975-05-21 1975-05-21 Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles Granted FR2311651A1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FR7515841A FR2311651A1 (en) 1975-05-21 1975-05-21 Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles
BE167031A BE841832A (en) 1975-05-21 1976-05-14 PROCESS AND DEVICE FOR THE MOLDING OF PARTS IN EXPANDED PLASTIC MATERIAL
SE7605713A SE411725B (en) 1975-05-21 1976-05-20 SET AND APPARATUS FOR SHAPING PRODUCTS OF EXPANDED PLASTIC MATERIAL
DK223276A DK223276A (en) 1975-05-21 1976-05-20 METHOD AND APPARATUS FOR MANUFACTURE OF EXPANDED PLASTIC ITEMS
NO761713A NO761713L (en) 1975-05-21 1976-05-20
CH633176A CH605091A5 (en) 1975-05-21 1976-05-20
GB21144/76A GB1523506A (en) 1975-05-21 1976-05-21 Method and apparatus for moulding expanded plastics materiial articles
NL7605462A NL7605462A (en) 1975-05-21 1976-05-21 PROCEDURE FOR FORMING EXPANDED PLASTIC MATERIAL AND DEVICE FOR PERFORMING THIS PROCEDURE.
AU14169/76A AU502217B2 (en) 1975-05-21 1976-05-21 A method of molding articles of expanded plastics material
DE2622903A DE2622903C2 (en) 1975-05-21 1976-05-21 Process for the production of molded articles from foam
US05/895,452 US4260571A (en) 1975-05-21 1978-04-11 Method for molding expanded plastic material articles
HK477/79A HK47779A (en) 1975-05-21 1979-07-12 Method and apparatus for molding expanded plastics material articles
MY8/80A MY8000008A (en) 1975-05-21 1980-12-30 Method and apparatus for molding expanded plastics material articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7515841A FR2311651A1 (en) 1975-05-21 1975-05-21 Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles

Publications (2)

Publication Number Publication Date
FR2311651A1 true FR2311651A1 (en) 1976-12-17
FR2311651B3 FR2311651B3 (en) 1978-05-12

Family

ID=9155491

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7515841A Granted FR2311651A1 (en) 1975-05-21 1975-05-21 Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles

Country Status (2)

Country Link
BE (1) BE841832A (en)
FR (1) FR2311651A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346140A1 (en) * 1976-03-31 1977-10-28 Kurtz Eisenwerk Ph MACHINE FOR MANUFACTURING, IN TWO PHASES, THERMOPLASTIC PROFILES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346140A1 (en) * 1976-03-31 1977-10-28 Kurtz Eisenwerk Ph MACHINE FOR MANUFACTURING, IN TWO PHASES, THERMOPLASTIC PROFILES

Also Published As

Publication number Publication date
BE841832A (en) 1976-11-16
FR2311651B3 (en) 1978-05-12

Similar Documents

Publication Publication Date Title
FR2338124A1 (en) Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles
JPS5597917A (en) Device for molding plastic
GB1487002A (en) Manufacture of biaxially oriented hollow containers of thermoplastics material
FR2564373B1 (en) THERMAL CONTROL METHOD AND DEVICE FOR HOT CHANNEL MOLDS
GB1343732A (en) Manufacture of hollow bodies of synthetic resinous material
JPS55109639A (en) Method of injection molding
FR2311651A1 (en) Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles
FR2194548A1 (en) Hollow propylene polymer articles - by drawing heated cut, tubular pieces and blow moulding drawn pieces
GB1456998A (en) Moulded thermoplastic article and method of making same
KR900006104A (en) Manufacturing method of composite foam molding
IT1202994B (en) Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles
US4957671A (en) Manufacture of plastic products
JPS55118837A (en) Manufacture of polystyrene beed foam molded article having outer layer
JPH01133716A (en) Manufacture of biaxial-oriented and heat-set vessel
WO2003097318A3 (en) Mould for producing moulded plastic skins
JPS634497B2 (en)
JPS6431619A (en) Manufacture of polyethylene terephthalate vessel superior in heat resistance
JPS5514278A (en) Molding method
DK463279A (en) FOAM
KR910011421A (en) Isothermal Injection Molding Method
SU412007A1 (en)
ES303762A1 (en) A procedure for manufacturing expanded polystyrene molded bodies. (Machine-translation by Google Translate, not legally binding)
JPS6151535B2 (en)
JPS5753334A (en) Polyestel resin injection molding machine and polyestel resin molding by said machine
SU770817A1 (en) Mould for casting polymeric articles

Legal Events

Date Code Title Description
TP Transmission of property