Press for producing pressed board by treating the material with

Details Press for producing pressed board by treating the material with Press for producing pressed board by treating the material with

1991-05-07

1993-03-23

Hornsby, Harvey C.

Presses

With additional treatment of material

Adding materials

100 93P, 4254051, 425406, 425420, B30B 1534

Patent

active

051954281

ABSTRACT:
A press for the production of pressed board with injection of steam utilizes press platens to which the steam is fed to the steam-feed channels from opposite sides in a collision flow, the channels communicating with steam-nozzle bores opening at the pressing surface and such that the cross section of each channel is equal to at least 60% of the total flow cross sections of the boards communicating with that channel. Before the pressing commences, the channels are through-flushed with steam to flush air from the channels and bores and to evacuate air from the pressed mat by a venturi effect.

REFERENCES:
patent: 3295167 (1967-01-01), Corbin
patent: 3372499 (1968-03-01), Gilbert
patent: 3517610 (1970-06-01), Siempelkamp
patent: 4162877 (1979-07-01), Nyberg
patent: 4357194 (1982-11-01), Stofko
patent: 4409170 (1983-10-01), Stofko
patent: 4504205 (1985-03-01), Stofko
patent: 4850849 (1989-07-01), Hsu
patent: 4923555 (1990-05-01), Elliott et al.
patent: 5063010 (1991-11-01), Fischer et al.

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