B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1051, 18/1077
B29C 51/42 (2006.01) B29C 33/04 (2006.01) B29C 35/02 (2006.01) B29C 51/10 (2006.01) B29C 35/04 (2006.01)
Patent
CA 1088721
ABSTRACT OF THE DISCLOSURE A method of forming articles from thermoplastics sheet by free- blowing, without use of moulds, in which the sheet is pre-heated to elastic state, free-blown by establishing a differential fluid pressure between opposite faces of the sheet and maintained at optimum temperature during the period of free-blowing by heating or cooling by heat-exchange between the sheet and fluid flowing over at least one face. Apparatus for performing the method comprises a tank divisible into two halves adapted to hold the sheet edgewise in between, the differential fluid pressures being established between the volumes in the two halves and fluid flow over the face of the sheet being established in one half.
273013
Fetherstonhaugh & Co.
Redifon Flight Simulation Limited
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