Plastic article or earthenware shaping or treating: apparatus – Sets of shaping couples comprising an endless surface for...
Patent
1987-05-13
1988-10-18
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Sets of shaping couples comprising an endless surface for...
156555, 1565835, 264347, 264DIG46, 425371, B29C 4348
Patent
active
047783737
ABSTRACT:
For the continuous pressing of sheet material in a reaction zone between two endless, heated press belts of a double band press at increased process temperatures, the capability for operating at process temperatures which are higher than critical, permissible operating temperatures of the double band press is achieved by heating the press belts in such a way that they have the highest temperature at their outsides facing the sheet material with heat flow through the press belt being effected from the hot outer side to the opposite inner side of the press belt. The heat flow direction in the reaction zone which otherwise leads from a pressure plate to the press belt outer side is thus reversed and, heating members are arranged in the vicinity of the press belt on the outer side thereof shortly before the reaction zone.
REFERENCES:
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patent: 3347697 (1967-10-01), Gmitro
patent: 3361607 (1968-01-01), Bruno
patent: 3783062 (1974-01-01), Martin
patent: 4090902 (1978-05-01), Ferrentino et al.
patent: 4283246 (1981-08-01), Held
patent: 4573404 (1986-03-01), Held
Bushey C. Scott
Woo Jay H.
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