GB1000841A - Improvements in or relating to the manufacture of strip-shaped articles from materials containing thermoplastic synthetic resins - Google Patents

Improvements in or relating to the manufacture of strip-shaped articles from materials containing thermoplastic synthetic resins

Info

Publication number
GB1000841A
GB1000841A GB18930/63A GB1893063A GB1000841A GB 1000841 A GB1000841 A GB 1000841A GB 18930/63 A GB18930/63 A GB 18930/63A GB 1893063 A GB1893063 A GB 1893063A GB 1000841 A GB1000841 A GB 1000841A
Authority
GB
United Kingdom
Prior art keywords
mandrel
tube
zone
contact
strip
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
GB18930/63A
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.)
Svenska Cellulosa AB
Original Assignee
Svenska Cellulosa AB
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 Svenska Cellulosa AB filed Critical Svenska Cellulosa AB
Publication of GB1000841A publication Critical patent/GB1000841A/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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/902—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
    • 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

Abstract

1,000,841. Forming thermoplastic sheet material; making flat films. SVENSKA CELLULOSA A.B. May 13, 1963 [May 14, 1962], No. 18930/63. Headings B5A and B5B. A continuous, substantially stress free, strip or film of material, containing a thermoplastic resin, is formed by extruding a heated tube 4 of the material around a cooled, double-walled mandrel 3, cutting the tube by a knife 5, then drawing the cut tube off the mandrel, and subsequently flattening and storing it on a suitable wind-up device. Contact between the tube and tho mandrel in zone I is prevented by compressed air introduced between the tube and the mandrel through inlet 3d. As the tube progresses along the mandrel to zones II and III it cools to an elastic state and shrinks into contact with the mandrel. The frictional forces caused by this contact are sufficient to prevent any stresses caused by the wind-up device from reaching the still plastic material in zone I, thus allowing the plastic material in said zone to cool to a substantially stress-free state. In an alternative embodiment the zone III comprises an expansible, non- cooled member, zone II having a smaller diameter than either zones I or II. Patterned products may be obtained by introducing different coloured granules into the working material which preferably comprises polyvinyl chloride together with a filler, e.g. chalk or kaolin.
GB18930/63A 1962-05-14 1963-05-13 Improvements in or relating to the manufacture of strip-shaped articles from materials containing thermoplastic synthetic resins Expired GB1000841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE534262 1962-05-14

Publications (1)

Publication Number Publication Date
GB1000841A true GB1000841A (en) 1965-08-11

Family

ID=20266248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18930/63A Expired GB1000841A (en) 1962-05-14 1963-05-13 Improvements in or relating to the manufacture of strip-shaped articles from materials containing thermoplastic synthetic resins

Country Status (3)

Country Link
DK (1) DK112409B (en)
FI (1) FI43014B (en)
GB (1) GB1000841A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053174A (en) * 1987-10-12 1991-10-01 Muolon Oy Method of producing a shrinkable product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053174A (en) * 1987-10-12 1991-10-01 Muolon Oy Method of producing a shrinkable product

Also Published As

Publication number Publication date
FI43014B (en) 1970-09-02
DK112409B (en) 1968-12-09

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