GB1078644A - Improvements in and relating to films of thermoplastic material - Google Patents

Improvements in and relating to films of thermoplastic material

Info

Publication number
GB1078644A
GB1078644A GB2149163A GB2149163A GB1078644A GB 1078644 A GB1078644 A GB 1078644A GB 2149163 A GB2149163 A GB 2149163A GB 2149163 A GB2149163 A GB 2149163A GB 1078644 A GB1078644 A GB 1078644A
Authority
GB
United Kingdom
Prior art keywords
thermoplastic material
films
relating
film
rollers
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
GB2149163A
Inventor
John Duns
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.)
Smith and Nephew Extruded Films Ltd
Original Assignee
Smith and Nephew Plastics 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 Smith and Nephew Plastics Ltd filed Critical Smith and Nephew Plastics Ltd
Priority to GB2149163A priority Critical patent/GB1078644A/en
Publication of GB1078644A publication Critical patent/GB1078644A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins

Abstract

1,078,644. Perforating thermoplastic film. SMITH & NEPHEW PLASTICS Ltd. May 27, 1964 [May 29, 1963], No. 21491/63. Heading B5A. Thin film 24 of thermoplastic material is perforated by passing it between two rollers 15, 16 one of which has a rubber or like cushioned surface 19 while the other has a multiplicity of heated truncated pyramids or cones which form the perforations by melting the material of the film. Feed rollers 26 ... 29 and electric heaters 18 are provided.
GB2149163A 1963-05-29 1963-05-29 Improvements in and relating to films of thermoplastic material Expired GB1078644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2149163A GB1078644A (en) 1963-05-29 1963-05-29 Improvements in and relating to films of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2149163A GB1078644A (en) 1963-05-29 1963-05-29 Improvements in and relating to films of thermoplastic material

Publications (1)

Publication Number Publication Date
GB1078644A true GB1078644A (en) 1967-08-09

Family

ID=10163839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2149163A Expired GB1078644A (en) 1963-05-29 1963-05-29 Improvements in and relating to films of thermoplastic material

Country Status (1)

Country Link
GB (1) GB1078644A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502765A (en) * 1967-08-24 1970-03-24 Eastman Kodak Co Method of controlling edge flatness of mechanically embossed oriented polymer sheeting
FR2088433A1 (en) * 1970-05-08 1972-01-07 Ici Ltd Perforating thermoplastic film
US4614632A (en) * 1983-12-30 1986-09-30 Nippon Petrochemicals Company, Limited Method and apparatus for continuously forming embossed sheets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502765A (en) * 1967-08-24 1970-03-24 Eastman Kodak Co Method of controlling edge flatness of mechanically embossed oriented polymer sheeting
FR2088433A1 (en) * 1970-05-08 1972-01-07 Ici Ltd Perforating thermoplastic film
US4614632A (en) * 1983-12-30 1986-09-30 Nippon Petrochemicals Company, Limited Method and apparatus for continuously forming embossed sheets

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