ES373363A1 - An extrusion head device for the production of cellular polyolephins. (Machine-translation by Google Translate, not legally binding) - Google Patents

An extrusion head device for the production of cellular polyolephins. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES373363A1
ES373363A1 ES373363A ES373363A ES373363A1 ES 373363 A1 ES373363 A1 ES 373363A1 ES 373363 A ES373363 A ES 373363A ES 373363 A ES373363 A ES 373363A ES 373363 A1 ES373363 A1 ES 373363A1
Authority
ES
Spain
Prior art keywords
translation
cellular
production
machine
legally binding
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
ES373363A
Other languages
Spanish (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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Publication of ES373363A1 publication Critical patent/ES373363A1/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
    • 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
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

An extrusion head device for the production of cellular polyolefins characterized in that it is constituted by an external die and a core whose ends are strongly thinned, in such a way that it is possible to locally perform a strong temperature gradient. (Machine-translation by Google Translate, not legally binding)
ES373363A 1968-12-04 1969-11-08 An extrusion head device for the production of cellular polyolephins. (Machine-translation by Google Translate, not legally binding) Expired ES373363A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE66955A BE724873A (en) 1968-12-04 1968-12-04

Publications (1)

Publication Number Publication Date
ES373363A1 true ES373363A1 (en) 1972-01-16

Family

ID=3841154

Family Applications (1)

Application Number Title Priority Date Filing Date
ES373363A Expired ES373363A1 (en) 1968-12-04 1969-11-08 An extrusion head device for the production of cellular polyolephins. (Machine-translation by Google Translate, not legally binding)

Country Status (5)

Country Link
BE (1) BE724873A (en)
CH (1) CH501489A (en)
DE (1) DE6945123U (en)
ES (1) ES373363A1 (en)
FR (1) FR2025164A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013108045B9 (en) 2013-07-26 2017-09-21 Windmöller & Hölscher Kg Blown film extrusion apparatus, temperature control for a blown film extrusion apparatus and method for temperature control of a blown film extrusion apparatus

Also Published As

Publication number Publication date
CH501489A (en) 1971-01-15
FR2025164A1 (en) 1970-09-04
DE6945123U (en) 1970-04-02
BE724873A (en) 1969-06-04

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