GB1345578A - Method of manufacturing hollowelements from thermoplastic materials - Google Patents

Method of manufacturing hollowelements from thermoplastic materials

Info

Publication number
GB1345578A
GB1345578A GB2330171A GB2330171A GB1345578A GB 1345578 A GB1345578 A GB 1345578A GB 2330171 A GB2330171 A GB 2330171A GB 2330171 A GB2330171 A GB 2330171A GB 1345578 A GB1345578 A GB 1345578A
Authority
GB
United Kingdom
Prior art keywords
mould
moulding
continuing
whilst
heating
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
GB2330171A
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.)
METALLURG DU VAL DAMBY ETS
Original Assignee
METALLURG DU VAL DAMBY ETS
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
Priority claimed from FR7008322A external-priority patent/FR2082251A5/fr
Application filed by METALLURG DU VAL DAMBY ETS filed Critical METALLURG DU VAL DAMBY ETS
Publication of GB1345578A publication Critical patent/GB1345578A/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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

1345578 Rotational casting ETABS METALLURGIQUES DU VAL D'AMBY 19 April 1971 [9 March 1970] 23301/71 Heading B5A Large cylindrical hollow vessels are moulded from thermoplastic powdered resins, e.g. polyolefins or polyamides, by a process comprising first heating the mould containing the powdered resin whilst it is rotated about a horizontal axis; then moulding the ends by tilting the mould first towards one end then the other whilst alternately rotating the mould in each direction; then continuing this whilst allowing the ends to cool; then moulding the body by continuing the alternating rotation sequence but with the mould horizontal, only the body part of the mould being heated; then continuing the alternating rotations without heating, and finally removing the mould. A two-part mould (Figs. 1-3, not shown) separated in the vertical plane and joined together by circumferential flanges is used, this being placed within an insulating enclosure carrying the heating elements and mounted in a framework arranged to be tilted to either side of a horizontal axle by a chain drive from an electric motor. At least two plug vents are provided, and are filled with material having a melting point such that it will melt after the powdered moulding material has coalesced. Details for the moulding of a 3000 litre polyethylene vat are described, the mould being alternately rotated, e.g. 5¥ revolutions in one direction and 6“ in the other.
GB2330171A 1970-03-09 1971-04-19 Method of manufacturing hollowelements from thermoplastic materials Expired GB1345578A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7008322A FR2082251A5 (en) 1970-03-09 1970-03-09

Publications (1)

Publication Number Publication Date
GB1345578A true GB1345578A (en) 1974-01-30

Family

ID=9051932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2330171A Expired GB1345578A (en) 1970-03-09 1971-04-19 Method of manufacturing hollowelements from thermoplastic materials

Country Status (7)

Country Link
BE (1) BE763771A (en)
CA (1) CA946111A (en)
CH (1) CH529625A (en)
DE (1) DE2110895A1 (en)
GB (1) GB1345578A (en)
NL (1) NL7103151A (en)
SE (1) SE367950B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136098A (en) * 1983-03-04 1984-09-12 Bryant & Sons Limited Barry Hot water cylinders

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136098A (en) * 1983-03-04 1984-09-12 Bryant & Sons Limited Barry Hot water cylinders

Also Published As

Publication number Publication date
BE763771A (en) 1971-08-02
CA946111A (en) 1974-04-30
SE367950B (en) 1974-06-17
CH529625A (en) 1972-10-31
NL7103151A (en) 1971-09-13
DE2110895A1 (en) 1971-10-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees