ES357903A1 - Improvements in or relating to processes for the manufacturing of shaped articles - Google Patents

Improvements in or relating to processes for the manufacturing of shaped articles

Info

Publication number
ES357903A1
ES357903A1 ES357903A ES357903A ES357903A1 ES 357903 A1 ES357903 A1 ES 357903A1 ES 357903 A ES357903 A ES 357903A ES 357903 A ES357903 A ES 357903A ES 357903 A1 ES357903 A1 ES 357903A1
Authority
ES
Spain
Prior art keywords
sheet
film
polyethylene terephthalate
heated
shaped articles
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
ES357903A
Other languages
Spanish (es)
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.)
Akzo NV
Original Assignee
Algemene Kunstzijde Unie NV
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 Algemene Kunstzijde Unie NV filed Critical Algemene Kunstzijde Unie NV
Publication of ES357903A1 publication Critical patent/ES357903A1/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
    • B29C51/002—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 characterised by the choice of material
    • 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
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Shaped articles of polyethylene terephthalate are made by heating a sheet or film of amorphous polyethylene terephthalate and vacuum forming the hot sheet or film, the part or parts of the sheet or film which are to be subjected to the greatest deformation in the vacuum forming step being subjected to an additional heat treatment to increase the crystallinity of the polymer. The sheet may be heated by infra-rod radiators to 90-120 C. with the particular parts thereof being additionally heated to 110-140 C. The shaped article formed may be heated at a temperature higher than that used at the beginning of the shaping operation so as to further increase the crystallinity of the polymer. The term polyethylene terephthalate includes copolymers containing not more than 10% of other units.
ES357903A 1967-09-08 1968-09-06 Improvements in or relating to processes for the manufacturing of shaped articles Expired ES357903A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6712321A NL6712321A (en) 1967-09-08 1967-09-08

Publications (1)

Publication Number Publication Date
ES357903A1 true ES357903A1 (en) 1970-04-01

Family

ID=19801151

Family Applications (1)

Application Number Title Priority Date Filing Date
ES357903A Expired ES357903A1 (en) 1967-09-08 1968-09-06 Improvements in or relating to processes for the manufacturing of shaped articles

Country Status (8)

Country Link
AT (1) AT308397B (en)
BE (1) BE720425A (en)
CH (1) CH497966A (en)
ES (1) ES357903A1 (en)
FR (1) FR1579328A (en)
GB (1) GB1236432A (en)
NL (1) NL6712321A (en)
SE (1) SE346081B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417592B (en) * 1978-03-13 1981-03-30 Plm Ab CONTAINER OF THERMO-PLASTIC PLASTIC MATERIAL WITH STRENGTHS INSIDE THE CONTAINER WALL, AND PROCEDURE FOR THE PREPARATION OF SUCH A CONTAINER
CH637893A5 (en) * 1979-05-03 1983-08-31 Tetra Pak Dev METHOD FOR PRODUCING A CONTAINER.
SE424286B (en) * 1979-06-11 1982-07-12 Plm Ab PROCEDURE TO GET AN ARTICLE OF THERMOPLASTIC MATERIAL THROUGH TOWING, AND CONTAINERS MANUFACTURED AS SET
SE424285B (en) * 1979-06-11 1982-07-12 Plm Ab ELEMENTS OF THERMOPLASTIC MATERIALS WITH AN EDGE PART AND ONE, IN RELATION TO THIS, SUBMITTED BODY AND PROCEDURE FOR MANUFACTURE OF SAID ELEMENTS
SE424420B (en) * 1979-06-11 1982-07-19 Plm Ab MANUFACTURING OF ARTICLES BY DRAWING AND BLASHING
EP0095865A3 (en) * 1982-06-01 1984-02-08 Celanese Corporation Thermoformed shaped articles of thermotropic liquid crystal polymers and methods of production thereof
US4619806A (en) * 1985-03-15 1986-10-28 The Procter & Gamble Company Method of forming highly oriented thermoplastic articles

Also Published As

Publication number Publication date
AT308397B (en) 1973-07-10
NL6712321A (en) 1967-11-27
DE1779640B2 (en) 1976-12-30
GB1236432A (en) 1971-06-23
DE1779640A1 (en) 1971-09-16
CH497966A (en) 1970-10-31
FR1579328A (en) 1969-08-22
BE720425A (en) 1969-02-17
SE346081B (en) 1972-06-26

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