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ES8706175A1 - Un procedimiento para eliminar sustancialmente la fractura superficial de la marca fundida durante la extension de un polimero de etileno. - Google Patents

Un procedimiento para eliminar sustancialmente la fractura superficial de la marca fundida durante la extension de un polimero de etileno.

Info

Publication number
ES8706175A1
ES8706175A1 ES533761A ES533761A ES8706175A1 ES 8706175 A1 ES8706175 A1 ES 8706175A1 ES 533761 A ES533761 A ES 533761A ES 533761 A ES533761 A ES 533761A ES 8706175 A1 ES8706175 A1 ES 8706175A1
Authority
ES
Spain
Prior art keywords
ethylene polymers
melt fracture
substantially eliminating
surface melt
eliminating surface
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
ES533761A
Other languages
English (en)
Other versions
ES533761A0 (es
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.)
Union Carbide Corp
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 ES533761A0 publication Critical patent/ES533761A0/es
Publication of ES8706175A1 publication Critical patent/ES8706175A1/es
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
    • B29C48/30—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)

Abstract

PROCEDIMIENTO PARA ELIMINAR LA FRACTURA SUPERFICIAL DE LA MASA FUNDIDA DURANTE LA EXTRUSION DE UN POLIMERO DE ETILENO. CONSISTE EN EXTRUIR EL POLIMERO (A) A TRAVES DE UNA ZONA ESTRECHA METALICA EN LA QUE EL POLIMERO MANTENGA UN CONTACTO ADHESIVO CON LAS PAREDES DE DICHA ZONA DE MODO QUE LA ADHESION SE PRODUZCA DURANTE UNA EXTENSION SUFICIENTE PARA ELIMINAR SUSTANCIALMENTE LA FRACTURA SUPERFICIAL DE LA MASA FUNDIDA DURANTE LA EXTRUSION, LA CUAL SE PRODUCE A TRAVES DE UNA BOQUILLA (10) CON UNA REGION PARALELA QUE DEFINE SUPERFICIES OPUESTAS (22, 22K), Y CON AL MENOS UNA DE LAS SUPERFICIES COMPUESTA DE UNA DETERMINADA ALEACION.
ES533761A 1983-06-28 1984-06-27 Un procedimiento para eliminar sustancialmente la fractura superficial de la marca fundida durante la extension de un polimero de etileno. Expired ES8706175A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50866783A 1983-06-28 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

Publications (2)

Publication Number Publication Date
ES533761A0 ES533761A0 (es) 1987-06-01
ES8706175A1 true ES8706175A1 (es) 1987-06-01

Family

ID=27056266

Family Applications (1)

Application Number Title Priority Date Filing Date
ES533761A Expired ES8706175A1 (es) 1983-06-28 1984-06-27 Un procedimiento para eliminar sustancialmente la fractura superficial de la marca fundida durante la extension de un polimero de etileno.

Country Status (15)

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

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
WO2020242789A1 (en) * 2019-05-30 2020-12-03 Dow Global Technologies Llc Method of extruding linear low-density polyethylene (lldpe) without surface fractures in the melt

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
GB843320A (en) * 1957-07-09 1960-08-04 Lonza Electric & Chem Works Process and apparatus for the extrusion of thermoplastic material
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
IN162111B (es) 1988-03-26
DE3481286D1 (de) 1990-03-15
GR81444B (es) 1984-12-11
FI850833A0 (fi) 1985-02-28
IL72236A0 (en) 1984-10-31
FI83487B (fi) 1991-04-15
CA1210918A (en) 1986-09-09
AU3107484A (en) 1985-01-25
FI83487C (fi) 1991-07-25
CS494084A2 (en) 1989-08-14
NO850767L (no) 1985-02-26
ES533761A0 (es) 1987-06-01
IL72236A (en) 1989-02-28
CS268663B2 (en) 1990-04-11
FI850833L (fi) 1985-02-28
EP0133213B1 (en) 1990-02-07
DK94985A (da) 1985-02-28
JPS6324809B2 (es) 1988-05-23
EP0133213A1 (en) 1985-02-20
ZA844926B (en) 1985-02-27
DK163869B (da) 1992-04-13
DK94985D0 (da) 1985-02-28
JPS60501702A (ja) 1985-10-11
WO1985000137A1 (en) 1985-01-17
AU565764B2 (en) 1987-09-24
DK163869C (da) 1992-09-21

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401