GB799544A - Improvements relating to synthetic plastic material - Google Patents

Improvements relating to synthetic plastic material

Info

Publication number
GB799544A
GB799544A GB173354A GB173354A GB799544A GB 799544 A GB799544 A GB 799544A GB 173354 A GB173354 A GB 173354A GB 173354 A GB173354 A GB 173354A GB 799544 A GB799544 A GB 799544A
Authority
GB
United Kingdom
Prior art keywords
core
mould
moulding
pipe
polytetrafluoroethylene
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
GB173354A
Inventor
Stanley Thomas Deakin
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.)
Siemens Edison Swan Ltd
Original Assignee
Siemens Edison Swan 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 Siemens Edison Swan Ltd filed Critical Siemens Edison Swan Ltd
Priority to GB173354A priority Critical patent/GB799544A/en
Publication of GB799544A publication Critical patent/GB799544A/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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/027—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry
    • 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
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

Abstract

799,544. Moulding polytetrafluoroethylene. SIEMENS EDISON SWAN, Ltd. Jan. 14, 1955 [Jan. 20, 1954], No. 1733/54. Class 87(2). Loose polytetrafluoroethylene 3 is filled into the space between a rubber core 2 and a mould 1, and a pressure member 12 is lowered to cause a wall 7 of the mould to slide over a piston 10 and thus compress a fluid, e.g., glycerine or air, in a chamber 12 to expand the core and mould the polytetrafluorethylene to the shape shown by the dotted line 3A. In a modification, Fig. 2, the core 2<SP>1</SP> may be expanded by fluid pressure supplied through a pipe 16. Vacuum may be applied to the pipe 16 to contract the core, after moulding. The member 4 which causes the moulded article to be of pipe form may be dispensed with to produce a container. A metal coating may be sprayed on to the moulded article, before a further pressing operation and application of the moulding temperature.
GB173354A 1954-01-20 1954-01-20 Improvements relating to synthetic plastic material Expired GB799544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB173354A GB799544A (en) 1954-01-20 1954-01-20 Improvements relating to synthetic plastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB173354A GB799544A (en) 1954-01-20 1954-01-20 Improvements relating to synthetic plastic material

Publications (1)

Publication Number Publication Date
GB799544A true GB799544A (en) 1958-08-13

Family

ID=9727046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB173354A Expired GB799544A (en) 1954-01-20 1954-01-20 Improvements relating to synthetic plastic material

Country Status (1)

Country Link
GB (1) GB799544A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS492869U (en) * 1972-04-17 1974-01-11
FR2231491A1 (en) * 1973-05-30 1974-12-27 Hopp Gerhard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS492869U (en) * 1972-04-17 1974-01-11
FR2231491A1 (en) * 1973-05-30 1974-12-27 Hopp Gerhard

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