GB1233184A - - Google Patents

Info

Publication number
GB1233184A
GB1233184A GB1233184DA GB1233184A GB 1233184 A GB1233184 A GB 1233184A GB 1233184D A GB1233184D A GB 1233184DA GB 1233184 A GB1233184 A GB 1233184A
Authority
GB
United Kingdom
Prior art keywords
sheet
vacuum
box
over
drawn
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
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 filed Critical
Publication of GB1233184A publication Critical patent/GB1233184A/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
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
    • 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
    • B29C51/425—Heating or cooling of preforms, specially adapted for thermoforming using movable heating devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

1,233,184. Sheet forming. I. E. LITTLE. 8 April, 1969 [13 Jan., 1968], No. 2036/68. Heading B5A. In a vacuum-forming process a sheet drawn from a roll 9 is clamped over a vacuum box 1, and drawn into the box over an increasing area starting from one end by applying a vacuum to the box and then moving a heater 12, dimensioned to heat only a fraction of the clamped area of the sheet over the sheet.
GB1233184D 1968-01-13 1968-01-13 Expired GB1233184A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB203668 1968-01-13

Publications (1)

Publication Number Publication Date
GB1233184A true GB1233184A (en) 1971-05-26

Family

ID=9732481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233184D Expired GB1233184A (en) 1968-01-13 1968-01-13

Country Status (1)

Country Link
GB (1) GB1233184A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2525390R1 (en) * 2013-06-19 2015-04-10 Roca Sanitario, S. A. THERMOCONFORMING MACHINE AND PARTS THERMOCONFORMING PROCEDURE THROUGH THE MACHINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2525390R1 (en) * 2013-06-19 2015-04-10 Roca Sanitario, S. A. THERMOCONFORMING MACHINE AND PARTS THERMOCONFORMING PROCEDURE THROUGH THE MACHINE

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee
728C Application made for restoration (sect. 28/1977)
728A Order made restoring the patent (sect. 28/1977)
PCNP Patent ceased through non-payment of renewal fee