DK94985A - Fremgangsmaade til i det vaesentlige at eliminere overfladesmeltefraktur ved ekstrudering af ethylenpolymere - Google Patents

Fremgangsmaade til i det vaesentlige at eliminere overfladesmeltefraktur ved ekstrudering af ethylenpolymere Download PDF

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Publication number
DK94985A
DK94985A DK94985A DK94985A DK94985A DK 94985 A DK94985 A DK 94985A DK 94985 A DK94985 A DK 94985A DK 94985 A DK94985 A DK 94985A DK 94985 A DK94985 A DK 94985A
Authority
DK
Denmark
Prior art keywords
eliminating
procedure
melt fracture
ethylene polymers
surface melt
Prior art date
Application number
DK94985A
Other languages
English (en)
Other versions
DK94985D0 (da
DK163869C (da
DK163869B (da
Inventor
Arakalgud Venkatapa Ramamurthy
Original Assignee
Union Carbide 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
Priority claimed from US06/508,668 external-priority patent/US4522776A/en
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of DK94985A publication Critical patent/DK94985A/da
Publication of DK94985D0 publication Critical patent/DK94985D0/da
Publication of DK163869B publication Critical patent/DK163869B/da
Application granted granted Critical
Publication of DK163869C publication Critical patent/DK163869C/da

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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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/272—Cleaning; Purging; Avoiding contamination of dies
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/3001—Extrusion nozzles or dies characterised by the material or their manufacturing process
    • B29C48/3003—Materials, coating or lining therefor
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0022—Bright, glossy or shiny surface
    • 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
    • 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
    • B29L2023/003—Tubular articles having irregular or rough surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Paper (AREA)
DK094985A 1983-06-28 1985-02-28 Fremgangsmaade til i alt vaesentligt at eliminere overfladesmeltefraktur ved ekstrudering af ethylenpolymere DK163869C (da)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US50866783A 1983-06-28 1983-06-28
US50866883 1983-06-28
US06/508,668 US4522776A (en) 1983-06-28 1983-06-28 Process for substantially eliminating surface melt fracture when extruding ethylene polymers
US50866783 1983-06-28
PCT/US1984/000976 WO1985000137A1 (en) 1983-06-28 1984-06-27 Process for substantially eliminating surface melt fracture when extruding ethylene polymers
US8400976 1984-06-27

Publications (4)

Publication Number Publication Date
DK94985A true DK94985A (da) 1985-02-28
DK94985D0 DK94985D0 (da) 1985-02-28
DK163869B DK163869B (da) 1992-04-13
DK163869C DK163869C (da) 1992-09-21

Family

ID=27056266

Family Applications (1)

Application Number Title Priority Date Filing Date
DK094985A DK163869C (da) 1983-06-28 1985-02-28 Fremgangsmaade til i alt vaesentligt at eliminere overfladesmeltefraktur ved ekstrudering af ethylenpolymere

Country Status (15)

Country Link
EP (1) EP0133213B1 (da)
JP (1) JPS60501702A (da)
AU (1) AU565764B2 (da)
CA (1) CA1210918A (da)
CS (1) CS268663B2 (da)
DE (1) DE3481286D1 (da)
DK (1) DK163869C (da)
ES (1) ES8706175A1 (da)
FI (1) FI83487C (da)
GR (1) GR81444B (da)
IL (1) IL72236A (da)
IN (1) IN162111B (da)
NO (1) NO850767L (da)
WO (1) WO1985000137A1 (da)
ZA (1) ZA844926B (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8430508U1 (de) * 1984-10-17 1985-02-28 Windmöller & Hölscher, 4540 Lengerich Extrusionsduese fuer einen blaskopf zur herstellung von kunststoffblasfolien
HUT48518A (en) * 1987-06-03 1989-06-28 Zoltan Balajthy Process for facilitating processing of thermoplastic polymers
CN102729447B (zh) * 2012-06-02 2014-07-02 安徽国通高新管业股份有限公司 聚乙烯给水管生产线加工控制方法
US20220176592A1 (en) * 2019-05-30 2022-06-09 Dow Global Technologies Llc Method of extruding linear low-density polyethylene without surface melt fracture

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082618A (en) * 1935-01-30 1937-06-01 Du Pont Extrusion device
FR1197597A (fr) * 1957-07-09 1959-12-01 Lonza Ag Procédé de fabrication de tuyaux lisses en particulier de tubes à paroi mince en matières thermoplastiques, et tête d'extrudeuse chauffée pour sa mise en oeuvre
FR1338715A (fr) * 1962-10-31 1963-09-27 I C P M Ind Chimiche Porto Mar Perfectionnements aux filières d'extrusion pour les matières thermoplastiques
US3665068A (en) * 1969-12-15 1972-05-23 Sun Oil Co Extrusion of extremely high molecular weight polyolefins
JPS5418865A (en) * 1977-07-14 1979-02-13 Kobe Steel Ltd Extrusion molding of synthetic resin and die therefor
DE2829232C2 (de) * 1978-07-03 1983-10-20 Ruhrchemie Ag, 4200 Oberhausen Verfahren zur Herstellung von Formkörpern aus hochmolekularem Niederdruckpolyäthylen

Also Published As

Publication number Publication date
EP0133213B1 (en) 1990-02-07
IL72236A0 (en) 1984-10-31
ES8706175A1 (es) 1987-06-01
CS494084A2 (en) 1989-08-14
DK94985D0 (da) 1985-02-28
ZA844926B (en) 1985-02-27
FI83487B (fi) 1991-04-15
AU3107484A (en) 1985-01-25
CA1210918A (en) 1986-09-09
GR81444B (da) 1984-12-11
FI850833L (fi) 1985-02-28
JPS60501702A (ja) 1985-10-11
FI850833A0 (fi) 1985-02-28
CS268663B2 (en) 1990-04-11
DE3481286D1 (de) 1990-03-15
NO850767L (no) 1985-02-26
IN162111B (da) 1988-03-26
ES533761A0 (es) 1987-06-01
AU565764B2 (en) 1987-09-24
WO1985000137A1 (en) 1985-01-17
DK163869C (da) 1992-09-21
IL72236A (en) 1989-02-28
DK163869B (da) 1992-04-13
EP0133213A1 (en) 1985-02-20
JPS6324809B2 (da) 1988-05-23
FI83487C (fi) 1991-07-25

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