GB1372726A - Manufacture of extruded plastics tube or film - Google Patents

Manufacture of extruded plastics tube or film

Info

Publication number
GB1372726A
GB1372726A GB682471A GB682471A GB1372726A GB 1372726 A GB1372726 A GB 1372726A GB 682471 A GB682471 A GB 682471A GB 682471 A GB682471 A GB 682471A GB 1372726 A GB1372726 A GB 1372726A
Authority
GB
United Kingdom
Prior art keywords
film
take
rollers
turner
tube
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
GB682471A
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.)
General Engineering Co Ltd
Original Assignee
General Engineering Co Ltd
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 General Engineering Co Ltd filed Critical General Engineering Co Ltd
Priority to GB682471A priority Critical patent/GB1372726A/en
Priority to DE2211475A priority patent/DE2211475C3/en
Publication of GB1372726A publication Critical patent/GB1372726A/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
    • B29C48/355—Conveyors for extruded 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

1372726 Films GENERAL ENG CO (RADCLIFFE) Ltd 10 March 1972 [13 March 1971] 6824/71 Heading B5B An apparatus for oscillating and re-orienting extruded plastics material tube or film 103 includes take-off rollers 100, 101 adapted to be oscillated about the longitudinal axis of the tube or film approaching the take-off roller to create a helical twist in the tube, and film re-orienting means oscillatable with and at the same angular rate as the take off rollers, including at least two turner bars 105, 107 he axes of which are disposed angularly relative to the axes of the take off rollers, whereby, in ue, film passing therethrough is re-oriented, and at least two guide elements 108 disposed with their axes parallel to and minimally offset from the axis of oscillation of the take-off rollers, between which re-oriented film is, in use, passed for delivery to a non- oscillatory reeling or winding mechanism. As shown, a guide roller 106 may be located between the two turner bars, which are suitably disposed so that the first turner bar 105 has its longitudinal axis in a plane substantially at right angles to the axis of oscillation of the take off rollers, and the second 107 having its longitudinal axis in a plane parallel to the axis of oscillation of the take off rollers. In use, the first turner bar preferably turns the film to reverse its direction of movement and simultaneously displace its direction of movement by approximately 45 degrees in the plane of the film. Preferably the turner bars have a rounded surface, and are hollow and apertured at spaced intervals so that they may be supplied with air or other gas so as to provide a gaseous cushion at the surface over which the tube or film slides during re-orientation. The guide roller and turner bar system is suitably mounted upon an oscillatable table; in this way the system can be rotated through substantially a complete revolution in one direction and then reversed. Alternatively, the guide elements can be non-oscillatory.
GB682471A 1971-03-13 1971-03-13 Manufacture of extruded plastics tube or film Expired GB1372726A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB682471A GB1372726A (en) 1971-03-13 1971-03-13 Manufacture of extruded plastics tube or film
DE2211475A DE2211475C3 (en) 1971-03-13 1972-03-09 Device for deflecting a tubular film web, laid flat by reversibly pivotable take-off rollers, to a stationary winder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB682471A GB1372726A (en) 1971-03-13 1971-03-13 Manufacture of extruded plastics tube or film

Publications (1)

Publication Number Publication Date
GB1372726A true GB1372726A (en) 1974-11-06

Family

ID=9821426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB682471A Expired GB1372726A (en) 1971-03-13 1971-03-13 Manufacture of extruded plastics tube or film

Country Status (2)

Country Link
DE (1) DE2211475C3 (en)
GB (1) GB1372726A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110181788A (en) * 2019-06-26 2019-08-30 郑州新生印务有限公司 A kind of PVDC film bubble torsion device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110181788A (en) * 2019-06-26 2019-08-30 郑州新生印务有限公司 A kind of PVDC film bubble torsion device
CN110181788B (en) * 2019-06-26 2024-06-11 郑州新生印务有限公司 PVDC film bubble torsion device

Also Published As

Publication number Publication date
DE2211475C3 (en) 1975-05-15
DE2211475A1 (en) 1972-09-14
DE2211475B2 (en) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee