GB628467A - Improvements in or relating to moulding plastic materials by extrusion - Google Patents

Improvements in or relating to moulding plastic materials by extrusion

Info

Publication number
GB628467A
GB628467A GB13328/46A GB1332846A GB628467A GB 628467 A GB628467 A GB 628467A GB 13328/46 A GB13328/46 A GB 13328/46A GB 1332846 A GB1332846 A GB 1332846A GB 628467 A GB628467 A GB 628467A
Authority
GB
United Kingdom
Prior art keywords
extrusion
relating
spiral
plastic materials
moulding plastic
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
GB13328/46A
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.)
LAVORAZIONE MAT PLAST
Original Assignee
LAVORAZIONE MAT PLAST
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 LAVORAZIONE MAT PLAST filed Critical LAVORAZIONE MAT PLAST
Publication of GB628467A publication Critical patent/GB628467A/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
    • B29C48/03—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
    • B29C48/03—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
    • B29C48/03—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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Sheets of thermoplastic material are formed by extrusion through a non-continuous slot which is contracted within the relatively small area of the extrusion plate by being formed into a spiral wavy &c. form. The spiral or wavy sheet thus formed is then flattened. The extrusion plate may be electrically heated. The turns of the spiral &c. may be prevented from sticking and the sheet is cooled by a fluid stream, air stream or talc powder. Specification 634,071 is referred to.
GB13328/46A 1943-04-03 1946-05-02 Improvements in or relating to moulding plastic materials by extrusion Expired GB628467A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT628467X 1943-04-03

Publications (1)

Publication Number Publication Date
GB628467A true GB628467A (en) 1949-08-30

Family

ID=11293617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13328/46A Expired GB628467A (en) 1943-04-03 1946-05-02 Improvements in or relating to moulding plastic materials by extrusion

Country Status (1)

Country Link
GB (1) GB628467A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078509A (en) * 1957-12-21 1963-02-26 Canadian Celanese Ltd Extrusion jet
DE1286296B (en) * 1964-10-19 1969-01-02 Fischer Rainer Method and device for the simultaneous loading of at least two injection heads in plastics processing machines from an extrusion press
GB2177044A (en) * 1985-05-29 1987-01-14 Rex Johansen Method and apparatus for extrusion
WO1999041061A1 (en) * 1998-02-17 1999-08-19 Newcourt, Inc. Continuous process for forming structure suitable for use as a core member
US6506276B1 (en) 2000-06-12 2003-01-14 Newcourt, Inc. Method for forming a cellular core member

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078509A (en) * 1957-12-21 1963-02-26 Canadian Celanese Ltd Extrusion jet
DE1286296B (en) * 1964-10-19 1969-01-02 Fischer Rainer Method and device for the simultaneous loading of at least two injection heads in plastics processing machines from an extrusion press
GB2177044A (en) * 1985-05-29 1987-01-14 Rex Johansen Method and apparatus for extrusion
GB2177044B (en) * 1985-05-29 1989-10-11 Rex Johansen Method and apparatus for extrusion
WO1999041061A1 (en) * 1998-02-17 1999-08-19 Newcourt, Inc. Continuous process for forming structure suitable for use as a core member
US6119344A (en) * 1998-02-17 2000-09-19 Newcourt, Inc. Continuous process for forming structure suitable for use of a core member
US6125540A (en) * 1998-02-17 2000-10-03 Newcourt, Inc. Continuous process for forming structure suitable for use as a core member
US6506276B1 (en) 2000-06-12 2003-01-14 Newcourt, Inc. Method for forming a cellular core member

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