GB1537481A - Process for manufacturing expanded non-polar plastics material - Google Patents

Process for manufacturing expanded non-polar plastics material

Info

Publication number
GB1537481A
GB1537481A GB3125/75A GB312575A GB1537481A GB 1537481 A GB1537481 A GB 1537481A GB 3125/75 A GB3125/75 A GB 3125/75A GB 312575 A GB312575 A GB 312575A GB 1537481 A GB1537481 A GB 1537481A
Authority
GB
United Kingdom
Prior art keywords
see
expanded
resonating cavity
moulds
resonating
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
GB3125/75A
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.)
Isobox Barbier SA
Original Assignee
Isobox Barbier SA
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 Isobox Barbier SA filed Critical Isobox Barbier SA
Priority to GB3125/75A priority Critical patent/GB1537481A/en
Priority to FR7601049A priority patent/FR2298571A1/en
Priority to DE19762602379 priority patent/DE2602379A1/en
Priority to BE1008323A priority patent/BE857511A/en
Publication of GB1537481A publication Critical patent/GB1537481A/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
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0261—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using ultrasonic or sonic vibrations

Landscapes

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

Abstract

1537481 Expanded non-polar plastics materials ISOBOX-BARBIER and J SOULIER 23 Jan 1976 [24 Jan 1975] 3125/75 Heading C3C [Also in Division B5] Expanded plastics material is made by mixing a non-polar plastics material, such as polystyrene, containing a blowing agent with a liquid polar material, such as water, and subjecting the mixture to a super-high frequency electromagnetic radiation in a resonating cavity. The process may be used to produce moulded articles or dry pre-expanded beads for use in subsequent moulding processes. In a first embodiment (see Fig. 1) expansible polystyrene beads are extruded by a screw extruder 1, 4, 5 through an elongated PTFE die 2 located within a resonating cavity 6 connected to a magnetron 7. The hot expanded material thus formed is cooled by passage through a chamber 3. In a second embodiment (see Fig. 4) expansible polystyrene beads are injected by a screw injector 31, having an injecting head 32 located within a resonating cavity 33 connected to a magnetron 34, into a series of split injection moulds 36 carried by a horizontal turntable 35. In a third embodiment (see Fig. 3, not shown) the horizontal turntable is replaced by a vertical turntable and the moulds pass through a resonating cavity and then a cooling zone. In a fourth embodiment (see Fig. 2, not shown) the split moulds moving around a closed elongated path pass an injection head and then pass through resonating and cooling chambers.
GB3125/75A 1975-01-24 1975-01-24 Process for manufacturing expanded non-polar plastics material Expired GB1537481A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3125/75A GB1537481A (en) 1975-01-24 1975-01-24 Process for manufacturing expanded non-polar plastics material
FR7601049A FR2298571A1 (en) 1975-01-24 1976-01-16 PROCESS FOR THE MANUFACTURING OF EXPANDED PLASTICS
DE19762602379 DE2602379A1 (en) 1975-01-24 1976-01-22 PROCESS FOR MANUFACTURING ARTICLES FROM FOAM PLASTIC
BE1008323A BE857511A (en) 1975-01-24 1977-08-05 PROCESS FOR THE MANUFACTURING OF EXPANDED PLASTICS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3125/75A GB1537481A (en) 1975-01-24 1975-01-24 Process for manufacturing expanded non-polar plastics material

Publications (1)

Publication Number Publication Date
GB1537481A true GB1537481A (en) 1978-12-29

Family

ID=9752395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3125/75A Expired GB1537481A (en) 1975-01-24 1975-01-24 Process for manufacturing expanded non-polar plastics material

Country Status (4)

Country Link
BE (1) BE857511A (en)
DE (1) DE2602379A1 (en)
FR (1) FR2298571A1 (en)
GB (1) GB1537481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064414A1 (en) * 2000-02-29 2001-09-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and device for thermally bonding expanded polymer particles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368513A2 (en) * 1976-10-22 1978-05-19 Isobox Barbier Sa PROCESS AND INSTALLATION FOR THE MANUFACTURING OF EXPANDED PLASTICS
FR2402526A1 (en) * 1977-09-09 1979-04-06 Isobox Barbier Sa DEVICE AND PROCEDURE FOR MOLDING EXPANDED PLASTICS, BY ULTRA-HIGH FREQUENCY RADIATION
DE19707136C2 (en) * 1997-02-22 2001-03-08 Moeller Plast Gmbh Process and foamable mass for the foaming or foam coating of components

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR972523A (en) * 1947-10-03 1951-01-31 Thomson Houston Comp Francaise Induction heating
GB953199A (en) * 1960-12-16 1964-03-25 Dow Chemical Co Process for the production of foamed articles by molding foamable or particulated preformed thermoplastic resinous materials
US3549848A (en) * 1969-02-06 1970-12-22 Varian Associates Composite microwave applicator and product conveyor
US3640913A (en) * 1969-04-17 1972-02-08 Dow Chemical Co Process for heating polymers with dielectric heating
US3771234A (en) * 1969-09-09 1973-11-13 Exxon Research Engineering Co Microwave drying process for synthetic polymers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064414A1 (en) * 2000-02-29 2001-09-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and device for thermally bonding expanded polymer particles

Also Published As

Publication number Publication date
DE2602379A1 (en) 1976-07-29
BE857511A (en) 1978-02-06
FR2298571A1 (en) 1976-08-20
FR2298571B1 (en) 1979-01-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee