GB1269991A - Improvements in or relating to building panels - Google Patents

Improvements in or relating to building panels

Info

Publication number
GB1269991A
GB1269991A GB47469A GB47469A GB1269991A GB 1269991 A GB1269991 A GB 1269991A GB 47469 A GB47469 A GB 47469A GB 47469 A GB47469 A GB 47469A GB 1269991 A GB1269991 A GB 1269991A
Authority
GB
United Kingdom
Prior art keywords
charge
injected
injection
polymer
vinyl chloride
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
GB47469A
Inventor
David Fairclough Oxley
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB47469A priority Critical patent/GB1269991A/en
Priority to AU10019/70A priority patent/AU1001970A/en
Priority to DE19702000161 priority patent/DE2000161A1/en
Priority to NL7000027A priority patent/NL7000027A/xx
Priority to FR7000081A priority patent/FR2037033A6/fr
Priority to BE744053D priority patent/BE744053R/en
Publication of GB1269991A publication Critical patent/GB1269991A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0461—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers

Abstract

1,269,991. Injection moulding building panels. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 Dec., 1969 [3 Jan., 1969], No. 474/69. Heading B5A. An injection moulded laminar building panel has a foamed core of a polymer of vinyl chloride surrounded at least at all points away from the sprue area by a continuous unfoamed skin of a rigid thermoplastic material. A charge of a rigid thermoplastic material is first injected into a mould, and then a charge of a polymer of vinyl chloride containing a blowing agent is injected to within the first charge. A second charge of the first material may then be injected. The mould cavity is enlarged after the second injection to allow foaming to take place. Examples of thermoplastic materials and of blowing agents are given. Reference has been directed by the Comptroller to Specification 1,156,217.
GB47469A 1969-01-03 1969-01-03 Improvements in or relating to building panels Expired GB1269991A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB47469A GB1269991A (en) 1969-01-03 1969-01-03 Improvements in or relating to building panels
AU10019/70A AU1001970A (en) 1969-01-03 1970-01-02 Improvements in or relating to building panels
DE19702000161 DE2000161A1 (en) 1969-01-03 1970-01-02 Layered building panels and processes for their production
NL7000027A NL7000027A (en) 1969-01-03 1970-01-02
FR7000081A FR2037033A6 (en) 1969-01-03 1970-01-02
BE744053D BE744053R (en) 1969-01-03 1970-01-05 MANUFACTURING PRODUCTS MANUFACTURING PROCESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB47469A GB1269991A (en) 1969-01-03 1969-01-03 Improvements in or relating to building panels

Publications (1)

Publication Number Publication Date
GB1269991A true GB1269991A (en) 1972-04-12

Family

ID=9704999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47469A Expired GB1269991A (en) 1969-01-03 1969-01-03 Improvements in or relating to building panels

Country Status (6)

Country Link
AU (1) AU1001970A (en)
BE (1) BE744053R (en)
DE (1) DE2000161A1 (en)
FR (1) FR2037033A6 (en)
GB (1) GB1269991A (en)
NL (1) NL7000027A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1252203B (en) * 1991-12-12 1995-06-05 Sviluppo Settori Impiego Srl PROCEDURE AND EQUIPMENT FOR THE PRODUCTION OF BODIES OF POLYMER MATERIAL WITH EXPANDED CORE.

Also Published As

Publication number Publication date
BE744053R (en) 1970-07-06
AU1001970A (en) 1971-07-08
FR2037033A6 (en) 1970-12-31
DE2000161A1 (en) 1970-12-17
NL7000027A (en) 1970-07-07

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