Process for preparing particle board

Details Process for preparing particle board Process for preparing particle board

1982-12-23

1984-01-31

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

264338, B28B 704

Patent

active

044288972

ABSTRACT:
Particle boards are currently prepared by treating the particles (e.g. wood chips) with a binder comprising an organic polyisocyanate and, optionally, a release agent and then subjecting the treated particles to a molding process involving heat and pressure. The resulting particle board will generally release well from the caul plates of the press after forming. However, it has been found that the ease of release is enhanced, particularly where the wood particles in the board are derived from hardwood, by utilizing a metal selected from magnesium and zinc in the metallic surfaces of the caul plates or platens which come into contact with the particle board during the application of heat and pressure.

REFERENCES:
patent: 4110397 (1978-08-01), Wooler
patent: 4257995 (1981-03-01), McLaughlin et al.
patent: 4257996 (1981-03-01), Farrissey et al.
patent: 4258169 (1981-03-01), Prather et al.
patent: 4352696 (1982-10-01), Prather

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