Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1990-04-20
1992-05-12
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
156555, 100154, 425371, B30B 700
Patent
active
051124319
ABSTRACT:
A press for making pressed board has a plurality of longitudinally spaced rigid frames supporting a lower press plate extending longitudinally through the frames and having an upwardly directed upper surface and a downwardly directed lower surface. A layer of insulation upwardly directly engages the lower press plate and downwardly directly engages the press frames so that the lower press plate is supported via the insulation layer directly on the frames. An upper press plate extending longitudinally above the lower plate through the frames has a lower surface defining with the lower press plate a longitudinally through going press gap and a plurality of vertically effective hydraulic actuators are carried on the frames above the upper plate. A layer of insulation upwardly directly engages the actuators and downwardly directly engages the upper press plate so that the upper press plate is supported via the respective insulation layer directly on the actuators. Respective upper and lower endless belts spanned over respective rollers and having respective lower and upper stretches extend through the gap immediately below and above the respective upper and lower plates and respective upper and lower rollers are engaged between the upper and lower plates and the lower and upper belt stretches. The upper and lower plates are heated at the respective lower and upper surfaces and the lower plate is also heated at the respective lower surface.
REFERENCES:
patent: 3881852 (1975-05-01), Ahrweiler
patent: 4645632 (1987-02-01), Buttger et al.
patent: 4647417 (1987-03-01), Bottger et al.
patent: 4895508 (1990-01-01), Held
Gerhardt Klaus
Sitzler Hans-Dietrich
C. Siempelkamp GmbH & Co.
Dubno Herbert
Engel, Jr. James J.
Simmons David A.
Wilford Andrew
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