Method of producing processed wood material panels

Details Method of producing processed wood material panels Method of producing processed wood material panels

1988-04-21

1990-05-08

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Treatment of material by vibrating, jarring, or agitating...

Continuously formed or indefinite length article

156 622, 156 628, 264 83, 264109, 264113, 264123, B29C 4322

Patent

active

049236563

ABSTRACT:
The production of wood material particles into board or panels, such as chipboard, fiberboard, OSB panels, MDF panels and the like, involves coating the particles with a binder free of any hardener. The coated particles are deposited on a support surface in the form of a mat and then are compressed. While the particles are being compressed in a press, an acid or basic hardener in a gaseous phase or in a binary phase with a gaseous carrier agent, is introduced across and into the surface of the mat or directly into the interior mat. The compression of the mat can be performed either in a continuous double band press or a discontinuous single or multi-platen press. In a double band press, two press bands are arranged in opposed relation and the hardener is introduced into the mat in a wedge-shaped inlet zone between the press bands. The hardener flows through openings in the press band onto the surface of the mat. Conduits are located in pressure plates associated with the press and bores extend from the conduits to the pressure plate surfaces in contact with the mat.

REFERENCES:
patent: 3699202 (1972-10-01), Verbestel
patent: 4044087 (1977-08-01), Robitschek et al.
patent: 4589948 (1986-05-01), Held
patent: 4605467 (1986-08-01), Bottger
patent: 4623499 (1986-11-01), Fuma et al.

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