GB1449472A - Method of moulding thermoplastic articles reinforced with fibrous reinforcing elements - Google Patents

Method of moulding thermoplastic articles reinforced with fibrous reinforcing elements

Info

Publication number
GB1449472A
GB1449472A GB5690673A GB5690673A GB1449472A GB 1449472 A GB1449472 A GB 1449472A GB 5690673 A GB5690673 A GB 5690673A GB 5690673 A GB5690673 A GB 5690673A GB 1449472 A GB1449472 A GB 1449472A
Authority
GB
United Kingdom
Prior art keywords
mass
fibres
mould
compression
polymer
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
GB5690673A
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.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
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 Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Publication of GB1449472A publication Critical patent/GB1449472A/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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B29B11/10—Extrusion moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor

Abstract

1449472 Compression moulding thermoplastic articles OWENS-CORNING FIBERGLAS CORP 7 Dec 1973 [29 Dec 1972] 56906/73 Heading B5A A method of moulding fibre reinforced thermoplastic articles comprises the steps of (a) heating a mass of thermoplastic polymer having fibres distributed therethrough to a temperature, above the melting point of the polymer, at which the viscosity of the mass is such that it will retain its shape unless subjected to a compressive force, (b) introducing the mass into a compression mould, (c) closing the compression mould on the mass at such a speed and with such a force that the mass flows and fills out the mould cavity before there is significant heat transfer to the mould, (d) maintaining the compressive force until the moulded mass is sufficiently cooled to be handleable, and (e) removing the compression moulding forces and removing the article from the mould. Preferably the heating takes place in a screw extruder in which the polymer and fibres are compounded. The heated mass is extruded and cut into billets which are then fed to the compression moulding apparatus which may be, for example, a mechanical stamping press. Polymers which may be used are polyethylene, polypropylene, nylon, thermoplastic polyester, polyvinyl chloride. The fibrous reinforcement may be milled fibres, boron fibres, asbestos fibres or glass fibres, and a filler such as talc, calcium carbonate or silica may be used.
GB5690673A 1972-12-29 1973-12-07 Method of moulding thermoplastic articles reinforced with fibrous reinforcing elements Expired GB1449472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31981472A 1972-12-29 1972-12-29

Publications (1)

Publication Number Publication Date
GB1449472A true GB1449472A (en) 1976-09-15

Family

ID=23243745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5690673A Expired GB1449472A (en) 1972-12-29 1973-12-07 Method of moulding thermoplastic articles reinforced with fibrous reinforcing elements

Country Status (8)

Country Link
JP (1) JPS507860A (en)
BE (1) BE809096A (en)
BR (1) BR7309212D0 (en)
CA (1) CA1025167A (en)
DE (1) DE2361727A1 (en)
FR (1) FR2212225B3 (en)
GB (1) GB1449472A (en)
NL (1) NL7317539A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034076A (en) * 1986-06-17 1991-07-23 Sumitomo Chemical Company, Limited Method for press molding thermoplastic resins
EP0751828A1 (en) * 1994-03-31 1997-01-08 Modern Technologies Corp. System and method for molding parts
US5954601A (en) * 1994-03-31 1999-09-21 Modern Technologies Corp. Basketball backboard with integrally molded graphics sheet
CN103660109A (en) * 2013-11-18 2014-03-26 东莞市瑞山橡塑制品有限公司 Process method of special silica gel product
WO2015066435A1 (en) * 2013-10-31 2015-05-07 Cadillac Products Automotive Company Injection compression molding system and method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49111472A (en) * 1973-02-22 1974-10-23
IT1196847B (en) * 1986-12-16 1988-11-25 Fiat Auto Spa PROCESS FOR THE PRODUCTION BY MOLDING OF UNSATURATED POLYESTER RESIN-BASED ITEMS
DE3726922A1 (en) * 1987-02-10 1988-08-18 Menzolit Gmbh METHOD AND DEVICE FOR PROVIDING FIBER REINFORCED THERMOPLASTIC MASS FOR THE PRODUCTION OF MOLDED PARTS
DE4417435C1 (en) * 1994-05-18 1996-01-04 Automation Industrielle Sa Method and devices for producing a molded body from plastic
US11325281B2 (en) 2018-07-23 2022-05-10 Ut-Battelle, Llc Rapid manufacturing of tailored preforms

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034076A (en) * 1986-06-17 1991-07-23 Sumitomo Chemical Company, Limited Method for press molding thermoplastic resins
EP0751828A1 (en) * 1994-03-31 1997-01-08 Modern Technologies Corp. System and method for molding parts
EP0751828A4 (en) * 1994-03-31 1998-09-30 Modern Techn Corp System and method for molding parts
US5954601A (en) * 1994-03-31 1999-09-21 Modern Technologies Corp. Basketball backboard with integrally molded graphics sheet
US6190586B1 (en) 1994-03-31 2001-02-20 Composite Technologies Co., Llc Method for creating a billet for molding a part
US6620353B2 (en) 1994-03-31 2003-09-16 Composite Technologies Co. Llc Method for molding reinforced thermoplastic parts
WO2015066435A1 (en) * 2013-10-31 2015-05-07 Cadillac Products Automotive Company Injection compression molding system and method
US9216526B2 (en) 2013-10-31 2015-12-22 Cadillac Products Automotive Company Injection compression molding system and method
CN105682883B (en) * 2013-10-31 2017-07-28 凯迪拉克汽车公司 injection compression molding system and method
CN103660109A (en) * 2013-11-18 2014-03-26 东莞市瑞山橡塑制品有限公司 Process method of special silica gel product

Also Published As

Publication number Publication date
DE2361727A1 (en) 1974-07-04
CA1025167A (en) 1978-01-31
FR2212225A1 (en) 1974-07-26
BR7309212D0 (en) 1974-08-15
JPS507860A (en) 1975-01-27
BE809096A (en) 1974-04-16
FR2212225B3 (en) 1976-10-15
NL7317539A (en) 1974-07-02

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Legal Events

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