DK146882A - Fremgangsmaade ved ekstrusion af en lineaer ethylencopolymer med snaever molekylvaegtsfordeling til at nedbringe tendensen tilsmeltefraktur - Google Patents

Fremgangsmaade ved ekstrusion af en lineaer ethylencopolymer med snaever molekylvaegtsfordeling til at nedbringe tendensen tilsmeltefraktur Download PDF

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Publication number
DK146882A
DK146882A DK146882A DK146882A DK146882A DK 146882 A DK146882 A DK 146882A DK 146882 A DK146882 A DK 146882A DK 146882 A DK146882 A DK 146882A DK 146882 A DK146882 A DK 146882A
Authority
DK
Denmark
Prior art keywords
trend
extrusion
melt
procedure
reduce
Prior art date
Application number
DK146882A
Other languages
Danish (da)
English (en)
Inventor
S J Kurtz
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
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of DK146882A publication Critical patent/DK146882A/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
    • 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
    • B29C48/07—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
    • 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
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene

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)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
DK146882A 1981-04-01 1982-03-31 Fremgangsmaade ved ekstrusion af en lineaer ethylencopolymer med snaever molekylvaegtsfordeling til at nedbringe tendensen tilsmeltefraktur DK146882A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/249,914 US4360494A (en) 1981-04-01 1981-04-01 Process for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer

Publications (1)

Publication Number Publication Date
DK146882A true DK146882A (da) 1982-10-02

Family

ID=22945553

Family Applications (1)

Application Number Title Priority Date Filing Date
DK146882A DK146882A (da) 1981-04-01 1982-03-31 Fremgangsmaade ved ekstrusion af en lineaer ethylencopolymer med snaever molekylvaegtsfordeling til at nedbringe tendensen tilsmeltefraktur

Country Status (12)

Country Link
US (1) US4360494A (ja)
EP (1) EP0061935B1 (ja)
JP (1) JPS57201627A (ja)
KR (1) KR830008827A (ja)
AU (1) AU544475B2 (ja)
BR (1) BR8201846A (ja)
CA (1) CA1171218A (ja)
DE (1) DE3265536D1 (ja)
DK (1) DK146882A (ja)
GR (1) GR81398B (ja)
NO (1) NO821045L (ja)
ZA (1) ZA822239B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110576580A (zh) * 2019-09-04 2019-12-17 深圳市特发信息光网科技股份有限公司 线缆模具及其外模

Families Citing this family (23)

* Cited by examiner, † Cited by third party
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US4532189A (en) * 1982-02-19 1985-07-30 W. R. Grace & Co., Cryovac Div. Linear polyethylene shrink films
US4525257A (en) * 1982-12-27 1985-06-25 Union Carbide Corporation Low level irradiated linear low density ethylene/alpha-olefin copolymers and film extruded therefrom
US4522776A (en) * 1983-06-28 1985-06-11 Union Carbide Corporation Process for substantially eliminating surface melt fracture when extruding ethylene polymers
US4554120A (en) * 1983-06-28 1985-11-19 Union Carbide Corporation Process for eliminating surface melt fracture during extrusion of thermoplastic polymers
US4617241A (en) * 1984-01-23 1986-10-14 W. R. Grace & Co., Cryovac Div. Linear polyethylene stretch/shrink films
US4832897A (en) * 1984-02-07 1989-05-23 Stamicarbon B.V. Process for the preparation of blown film
US4551380A (en) * 1984-05-10 1985-11-05 W. R. Grace & Co., Cryovac Div. Oriented heat-sealable multilayer packaging film
US4590124A (en) * 1984-05-10 1986-05-20 W. R. Grace & Co., Cryovac Div. Storm window film
US4514465A (en) * 1984-05-30 1985-04-30 W. R. Grace & Co., Cryovac Div. Storm window film comprising at least five layers
JPS61196070A (ja) * 1985-02-27 1986-08-30 大成建設株式会社 構造物の止水方法
NL8502191A (nl) * 1985-08-06 1987-03-02 Stamicarbon Werkwijze voor het vervaardigen van vlakfolie.
US4713205A (en) * 1985-09-25 1987-12-15 Mobil Oil Corporation Method for reducing melt fracture during extrusion of linear polyethylene homopolymers and copolymers by varying the geometry of the die exit face
US4671918A (en) * 1985-10-25 1987-06-09 National Distillers And Chemical Corporation Apparatus and process for producing polyolefin film
US4753767A (en) * 1986-04-03 1988-06-28 The Dow Chemical Company Extrusion apparatus and method
US4711602A (en) * 1986-07-17 1987-12-08 Precision Rubber Products Corporation Turbulent flow gate for the injection molding of tubular parts, including parisons suitable for blow molding
US4942010A (en) * 1986-07-17 1990-07-17 Wynn's-Precision, Inc. Method of injection molding of tubular parts to eliminate weld lines
US4780264A (en) * 1987-05-22 1988-10-25 The Dow Chemical Company Linear low density polyethylene cast film
US4859398A (en) * 1987-07-02 1989-08-22 Mobil Oil Corporation High shear extrusion of linear low density polyethylene
CN101346217B (zh) * 2005-12-26 2011-08-31 柯尼卡美能达精密光学株式会社 纤维素膜的制造方法、制造装置、通过该制造装置制造的光学膜、使用该光学膜的偏振片及液晶显示装置
DE102007029310A1 (de) 2007-02-13 2008-08-14 Kiefel Extrusion Gmbh Wendelverteiler für eine Blasfolienanlage
US8771816B2 (en) 2012-05-31 2014-07-08 Chevron Phillips Chemical Company Lp Controlling melt fracture in bimodal resin pipe
JP6776860B2 (ja) * 2016-12-09 2020-10-28 コニカミノルタ株式会社 サイジングダイと押出成形装置、およびそれらを用いた管状部材の製造方法
CN113784829A (zh) 2019-05-30 2021-12-10 陶氏环球技术有限责任公司 挤出熔体中无表面破裂的线性低密度聚乙烯（lldpe）的方法

Family Cites Families (17)

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US3125620A (en) * 1964-03-17 Process for providing improved surface
US2813301A (en) * 1954-12-13 1957-11-19 Monsanto Chemicals Sheeting die
US3038209A (en) * 1958-07-10 1962-06-12 Eastman Kodak Co Method of dope-casting film at high shear rate
US3133313A (en) * 1962-10-30 1964-05-19 Nat Distillers Chem Corp Extrusion die mechanism
AT304753B (de) * 1968-03-02 1973-01-25 Glanzstoff Ag Spinndüsenplatte
US3859017A (en) * 1969-02-20 1975-01-07 Rol Extrusion of sheath onto elongated support using decompression zones
GB1441586A (en) * 1972-07-12 1976-07-07 Ici Ltd Method for reducing sharkskin on extruded polymeric material
US3876740A (en) * 1972-10-27 1975-04-08 Standard Oil Co Process for improving interior surface smoothness and gloss in foamed tubular extrudates by the use of extrusion die faces of novel geometry
US3879158A (en) * 1973-01-09 1975-04-22 Enrique Schele Apparatus for extruding thermoplastic annular shapes
US3947214A (en) * 1974-12-13 1976-03-30 Corning Glass Works Extrusion die mask
US3994654A (en) * 1975-01-02 1976-11-30 Monsanto Company Die for extruding thermoplastic sheets
DE2522357C3 (de) * 1975-05-21 1980-04-24 Hoechst Ag, 6000 Frankfurt Blasextruder
US4187269A (en) * 1975-11-17 1980-02-05 The Dow Chemical Company Extrusion process for reducing melt fracture
US4243619A (en) * 1978-03-31 1981-01-06 Union Carbide Corporation Process for making film from low density ethylene hydrocarbon copolymer
US4267146A (en) * 1979-01-08 1981-05-12 Union Carbide Corporation Method for reducing melt fracture during extrusion of ethylene polymers
US4282177A (en) * 1979-01-08 1981-08-04 Union Carbide Corporation Method for reducing sharkskin melt fracture during extrusion of ethylene polymers
US4348349A (en) * 1980-10-01 1982-09-07 Union Carbide Corporation Method for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110576580A (zh) * 2019-09-04 2019-12-17 深圳市特发信息光网科技股份有限公司 线缆模具及其外模
CN110576580B (zh) * 2019-09-04 2024-04-16 深圳市特发信息光网科技股份有限公司 线缆模具

Also Published As

Publication number Publication date
NO821045L (no) 1982-10-04
BR8201846A (pt) 1983-03-01
ZA822239B (en) 1983-02-23
EP0061935A3 (en) 1983-03-23
AU544475B2 (en) 1985-05-30
AU8222882A (en) 1982-10-07
EP0061935A2 (en) 1982-10-06
KR830008827A (ko) 1983-12-16
GR81398B (ja) 1984-12-11
JPS57201627A (en) 1982-12-10
US4360494A (en) 1982-11-23
CA1171218A (en) 1984-07-24
EP0061935B1 (en) 1985-08-21
DE3265536D1 (en) 1985-09-26

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AHB Application shelved due to non-payment
PBP Patent lapsed