GB602575A - Production of perforated sheets of thermoplastic material - Google Patents

Production of perforated sheets of thermoplastic material

Info

Publication number
GB602575A
GB602575A GB33889/45A GB3388945A GB602575A GB 602575 A GB602575 A GB 602575A GB 33889/45 A GB33889/45 A GB 33889/45A GB 3388945 A GB3388945 A GB 3388945A GB 602575 A GB602575 A GB 602575A
Authority
GB
United Kingdom
Prior art keywords
roller
heated
thermoplastic material
grooves
solidify
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
GB33889/45A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB33889/45A priority Critical patent/GB602575A/en
Publication of GB602575A publication Critical patent/GB602575A/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
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • 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
    • 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
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

<PICT:0602575/IV(a)/1> Perforated sheets of organic thermoplastic material are produced by covering a heated metal surface engraved with intersecting grooves with a molten hot-melt thermoplastic material, removing excess material not in the grooves, and cooling the surface to solidify the material. Hot-melt thermoplastic material is liquid above 100 DEG C. and of a certain viscosity. Molten material such as polythene is fed from a nozzle 7 and a heated trough 8 on to a rotating roller 1 having the engraved surface. A heated spreader bar 9 forces the material into the grooves and a heated doctor knife 10 removes excess material. Running water 3 in the cylinder and a cooled roller 11 solidify the material which is removed on the roller 11. The roller 1 is supported and rotated by the rollers 2, 11 and is heated by infra-red lamps 6. The surface of the roller 1 is polished and coated with a film of a separating aid, such as high melting point grease, aluminium or zinc stearate, a glazing material such as sodium silicate or a detergent. The roller is of stainless steel, mild steel, brass or aluminium. Specification 516,807 is referred to.
GB33889/45A 1945-12-14 1945-12-14 Production of perforated sheets of thermoplastic material Expired GB602575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33889/45A GB602575A (en) 1945-12-14 1945-12-14 Production of perforated sheets of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33889/45A GB602575A (en) 1945-12-14 1945-12-14 Production of perforated sheets of thermoplastic material

Publications (1)

Publication Number Publication Date
GB602575A true GB602575A (en) 1948-05-28

Family

ID=10358761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33889/45A Expired GB602575A (en) 1945-12-14 1945-12-14 Production of perforated sheets of thermoplastic material

Country Status (1)

Country Link
GB (1) GB602575A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312586A (en) * 1965-10-24 1967-04-04 Barlow Terrence William Method of making synthetic suede and product thereof
US3374133A (en) * 1963-10-10 1968-03-19 Air Reduction Method of making air-pervious thermoplastic-overlaid fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374133A (en) * 1963-10-10 1968-03-19 Air Reduction Method of making air-pervious thermoplastic-overlaid fabric
US3312586A (en) * 1965-10-24 1967-04-04 Barlow Terrence William Method of making synthetic suede and product thereof

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