GB758036A - Embossing thermoplastic sheet - Google Patents

Embossing thermoplastic sheet

Info

Publication number
GB758036A
GB758036A GB594754A GB594754A GB758036A GB 758036 A GB758036 A GB 758036A GB 594754 A GB594754 A GB 594754A GB 594754 A GB594754 A GB 594754A GB 758036 A GB758036 A GB 758036A
Authority
GB
United Kingdom
Prior art keywords
sheet
cup
web
pattern
lace
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
GB594754A
Inventor
Leslie John Moncrief
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.)
Acordis UK Ltd
Original Assignee
British Celanese 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 British Celanese Ltd filed Critical British Celanese Ltd
Priority to GB594754A priority Critical patent/GB758036A/en
Publication of GB758036A publication Critical patent/GB758036A/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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

758,036. Embossing. BRITISH CELANESE, Ltd. Feb. 28, 1955 [March . 1, 1954], No. 5947/54. Class 100 (2). A process for embossing surface patterns on a sheet of thermoplastic material consists of heating the sheet to soften it and then urging it into contact with an air-permeable fibrous web, carrying the desired pattern, by creating a vacuum on the other side of the web, allowing the sheet to cool and then stripping it off the web. The web 15 is a patterned fabric, e.g. lace, and is supported on a sheet of wire mesh 14 resting on a perforated platform 11 in a vacuum cup 10. The thermoplastic sheet 17 is stretched over the mouth of the cup and sealed thereagainst by a clamping ring 16. A radiant heater 19 is mounted on rails so as to be movable into and out of position over the mouth of the cup 10. When the sheet 17 is sufficiently softened the heater is moved away and the tap 22 at the bottom of the cup opened to connect the cup with an evacuated chamber. The atmospheric pressure on the upper side of the sheet then forces it into intimate contact with the fabric 15 so that the pattern is transferred to the sheet 17. When the sheet is cooled it is stripped off and the process repeated with another thermoplastic sheet. The cooling may be assisted, e.g. by air blast if necessary and extra pressure may be applied on the upper side of the sheet if desired. Examples are given in which a thermoplastic sheet of cellulose acetate, dimethyl phthalate and triphenyl phosphate is embossed by contact with webs consisting of lace having a floral pattern or of surgical lint having on the upper side a fluffy brushed surface. In the first case the lace pattern is transferred to the plastic sheet and in the second case a matt surface is produced. The web may alternatively consist of a crepe fabric, velvet, satin, knitted, woven or other fabrics.
GB594754A 1954-03-01 1954-03-01 Embossing thermoplastic sheet Expired GB758036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB594754A GB758036A (en) 1954-03-01 1954-03-01 Embossing thermoplastic sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB594754A GB758036A (en) 1954-03-01 1954-03-01 Embossing thermoplastic sheet

Publications (1)

Publication Number Publication Date
GB758036A true GB758036A (en) 1956-09-26

Family

ID=9805601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB594754A Expired GB758036A (en) 1954-03-01 1954-03-01 Embossing thermoplastic sheet

Country Status (1)

Country Link
GB (1) GB758036A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167014A (en) * 1984-10-18 1986-05-21 Honda Motor Co Ltd Embossing
WO2001086743A2 (en) * 2000-05-10 2001-11-15 Ballard Power Systems, Inc. Method and apparatus for embossing expanded graphite sheet material under reduced pressure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167014A (en) * 1984-10-18 1986-05-21 Honda Motor Co Ltd Embossing
WO2001086743A2 (en) * 2000-05-10 2001-11-15 Ballard Power Systems, Inc. Method and apparatus for embossing expanded graphite sheet material under reduced pressure
WO2001086743A3 (en) * 2000-05-10 2003-01-23 Ballard Power Systems Method and apparatus for embossing expanded graphite sheet material under reduced pressure
US6797091B2 (en) 2000-05-10 2004-09-28 Ballard Power Systems Inc. Method for embossing expanded graphite sheet material under reduced pressure

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