CA997519A - Process for molding expandable thermoplastic material - Google Patents

Process for molding expandable thermoplastic material

Info

Publication number
CA997519A
CA997519A CA150,803A CA150803A CA997519A CA 997519 A CA997519 A CA 997519A CA 150803 A CA150803 A CA 150803A CA 997519 A CA997519 A CA 997519A
Authority
CA
Canada
Prior art keywords
thermoplastic material
expandable thermoplastic
molding expandable
molding
thermoplastic
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
CA150,803A
Other languages
English (en)
Other versions
CA150803S (en
Inventor
Stuart B. Smith
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.)
Foster Grant Co Inc
Original Assignee
Foster Grant Co Inc
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 Foster Grant Co Inc filed Critical Foster Grant Co Inc
Application granted granted Critical
Publication of CA997519A publication Critical patent/CA997519A/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/09—Pre-expansion of foamed polystyrene
CA150,803A 1971-09-02 1972-09-01 Process for molding expandable thermoplastic material Expired CA997519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/177,476 US3963816A (en) 1971-09-02 1971-09-02 Process for molding expandable thermoplastic material

Publications (1)

Publication Number Publication Date
CA997519A true CA997519A (en) 1976-09-28

Family

ID=22648749

Family Applications (1)

Application Number Title Priority Date Filing Date
CA150,803A Expired CA997519A (en) 1971-09-02 1972-09-01 Process for molding expandable thermoplastic material

Country Status (7)

Country Link
US (1) US3963816A (it)
JP (1) JPS4861571A (it)
CA (1) CA997519A (it)
DE (1) DE2243123A1 (it)
FR (1) FR2151098B1 (it)
GB (1) GB1402115A (it)
IT (1) IT967099B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073843A (en) * 1972-09-11 1978-02-14 Foster Grant Co., Inc. Process of partially expanding thermoplastic particles using a mixture of steam and a hot dry gas
SE448357B (sv) * 1982-09-14 1987-02-16 Korpela Heikki Sett och anordning for metning och reglering av volymvikten hos ett expanderat partikulert material
AT374206B (de) * 1982-11-15 1984-03-26 Hirsch Kurt Verfahren und vorrichtung zum vorschaeumen von kunststoffen
DE3502006A1 (de) * 1985-01-23 1986-07-24 Hahn, Ortwin, Prof. Dr.-Ing., 4790 Paderborn Verfahren zum schaeumen und sintern von kunststoffen
DE3836875A1 (de) * 1988-04-07 1989-10-26 Erlenbach Gmbh & Co Kg Verfahren und vorrichtung zum herstellen von formlingen aus expandierbaren kunststoffpartikeln
DE19921673B4 (de) * 1999-05-07 2004-03-11 Schaumaplast Sachsen Gmbh Vorrichtung und Verfahren zur Herstellung von Formkörpern aus expandierbaren Kunststoffteilchen
ATE526358T1 (de) * 2003-03-25 2011-10-15 Sekisui Plastics Expandierbare harzteilchen aus styrolmodifiziertem linearen polyethylen niederer dichte
EP1607437B2 (en) * 2003-03-25 2016-08-24 Sekisui Plastics Co., Ltd. Expandable resin beads of styrene-modified, linear low-density polyethylene, process for production thereof, pre-expanded beads, and foams
JP2007503324A (ja) * 2003-08-15 2007-02-22 ノバ・ケミカルズ（インターナシヨナル）・エス・アー 発泡性ポリマー粒子およびその発泡物品を加工する方法
EP1813408A1 (de) * 2006-01-26 2007-08-01 Basf Aktiengesellschaft Verfahren zum Befüllen von Formwerkzeugen mit expendierten Polymerpartikeln
MXGT06000017A (es) * 2006-08-30 2008-02-28 Univ Guanajuato Proceso para producir piezas continuas de espuma de poliestireno expandido.
EP1914052B1 (de) * 2006-10-19 2017-06-28 Basf Se Leichte Holzwerkstoffe
CN105008103B (zh) 2013-02-20 2017-09-26 库尔特股份有限公司 用于生产颗粒状泡沫件的方法和设备
EP3159129A1 (de) 2015-10-22 2017-04-26 Evonik Röhm GmbH Herstellung von komplexen schaum-/ oder sandwichholstrukturen mittels eines formkerns

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086248A (en) * 1959-12-07 1963-04-23 Armstrong Cork Co Process for reducing aging period of cellular products formed with steam
NL264938A (it) * 1961-05-18
US3162704A (en) * 1961-09-22 1964-12-22 Champlain Zapata Plastics Mach Molding of expandable plastic pellets
US3155379A (en) * 1962-01-29 1964-11-03 Champlain Zapata Plastics Mach Pre-expander for pellets of plastic material
US3207820A (en) * 1962-04-09 1965-09-21 Owens Illinois Glass Co Method of preparing polystyrene beads for molding
GB1005137A (en) * 1963-09-16 1965-09-22 Monsanto Chemicals Production of foamed vinylaromatic polymer articles
US3452124A (en) * 1964-08-27 1969-06-24 Corning Glass Works Reduction of cooling cycles through rapid decompression of heated beads
US3417170A (en) * 1964-08-27 1968-12-17 Corning Glass Works Reduction of cycle time by the use of heated expanded polystyrene beads
US3446882A (en) * 1966-07-15 1969-05-27 Frank L Landon Process of forming a polystyrene structure within a container
FR1515373A (fr) * 1967-03-09 1968-03-01 Swedish Crucible Steel Company Production de feuilles de mousse de polystyrène flexible
DE1908616C3 (de) * 1969-02-21 1978-04-20 Friedrich 6702 Bad Duerkheim Heck Verfahren zum Herstellen von Formkörpern aus Schaumpolystyrol unter Verwendung von vorgeschäumten Polystyrolteilchen

Also Published As

Publication number Publication date
JPS4861571A (it) 1973-08-29
GB1402115A (en) 1975-08-06
DE2243123A1 (de) 1973-03-08
FR2151098B1 (it) 1979-03-30
FR2151098A1 (it) 1973-04-13
IT967099B (it) 1974-02-28
US3963816A (en) 1976-06-15

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