GB2024701B - Extruding high molecular weight low pressure polyethylene - Google Patents

Extruding high molecular weight low pressure polyethylene

Info

Publication number
GB2024701B
GB2024701B GB7922466A GB7922466A GB2024701B GB 2024701 B GB2024701 B GB 2024701B GB 7922466 A GB7922466 A GB 7922466A GB 7922466 A GB7922466 A GB 7922466A GB 2024701 B GB2024701 B GB 2024701B
Authority
GB
United Kingdom
Prior art keywords
molecular weight
low pressure
high molecular
pressure polyethylene
weight low
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
GB7922466A
Other versions
GB2024701A (en
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.)
Ruhrchemie AG
Original Assignee
Ruhrchemie AG
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 Ruhrchemie AG filed Critical Ruhrchemie AG
Publication of GB2024701A publication Critical patent/GB2024701A/en
Application granted granted Critical
Publication of GB2024701B publication Critical patent/GB2024701B/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
    • 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
GB7922466A 1978-07-03 1979-06-28 Extruding high molecular weight low pressure polyethylene Expired GB2024701B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2829232A DE2829232C2 (en) 1978-07-03 1978-07-03 Process for the production of moldings from high molecular weight low-pressure polyethylene

Publications (2)

Publication Number Publication Date
GB2024701A GB2024701A (en) 1980-01-16
GB2024701B true GB2024701B (en) 1982-08-25

Family

ID=6043454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7922466A Expired GB2024701B (en) 1978-07-03 1979-06-28 Extruding high molecular weight low pressure polyethylene

Country Status (8)

Country Link
AT (1) AT380656B (en)
CH (1) CH642906A5 (en)
DE (1) DE2829232C2 (en)
FR (1) FR2430305A1 (en)
GB (1) GB2024701B (en)
IT (1) IT1162648B (en)
NL (1) NL7808330A (en)
YU (1) YU40223B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1210918A (en) * 1983-06-28 1986-09-09 Arakalgud V. Ramamurthy Process for substantially eliminating surface melt fracture when extruding ethylene polymers
DE3401669A1 (en) * 1984-01-19 1985-08-01 Plastik-Maschinenbau Gmbh & Co Kg Entwicklungsgesellschaft, 5489 Kelberg Sliding component in the form of a section from a plastic profile made from polyethylene
DD230826A1 (en) * 1984-03-05 1985-12-11 Univ Dresden Tech METHOD AND EXTRUSION DEVICE FOR FORMING FLOW-PROOF MASSES
DE3418259C2 (en) * 1984-05-17 1986-07-10 Plastik-Maschinenbau Gmbh & Co Kg Entwicklungsgesellschaft, 5489 Kelberg Process and system for the further processing of household waste
DE3828662A1 (en) * 1988-08-24 1990-03-08 Priesemuth W DEVICE FOR PRODUCING PLASTIC REGENERATE
DE9014506U1 (en) * 1990-10-19 1991-01-10 Wk Worek Kunststofftechnik Gmbh, 8555 Adelsdorf, De
DE4212335C2 (en) * 1992-04-13 1995-05-18 Marijan Bradic Extrusion device for the production of plates

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883631A (en) * 1966-11-25 1975-05-13 Impact Plastics Inc Method and means for making high molecular weight polyethylene sheets
US3483597A (en) * 1966-12-23 1969-12-16 Allied Chem Ram extrusion of granular resins
CA930116A (en) * 1967-02-01 1973-07-17 E. Murray Coyt Reinforced extruder for high molecular weight polyethylene
US3887319A (en) * 1972-12-08 1975-06-03 Polymer Corp Apparatus for the extrusion of ultra high molecular weight polymeric resins
DE2907523C2 (en) * 1979-02-26 1985-01-10 Salem Furnace Co.,, Carnegie, Pa. Method and device for heat treatment of materials on a rotary hearth

Also Published As

Publication number Publication date
YU40223B (en) 1985-08-31
ATA445779A (en) 1985-11-15
DE2829232C2 (en) 1983-10-20
DE2829232A1 (en) 1980-01-17
AT380656B (en) 1986-06-25
GB2024701A (en) 1980-01-16
FR2430305B1 (en) 1983-08-12
YU149279A (en) 1983-01-21
IT7949615A0 (en) 1979-07-02
IT1162648B (en) 1987-04-01
CH642906A5 (en) 1984-05-15
NL7808330A (en) 1980-01-07
FR2430305A1 (en) 1980-02-01

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Legal Events

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