Production of hardboard

Details Production of hardboard Production of hardboard

1979-07-02

1980-10-14

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With formation of web or article

162 26, 162 75, 162150, 162179, 162221, 162225, 162DIG2, D21B 104

Patent

active

042279658

ABSTRACT:
A process for improving the strengths and resistance to water absorption of wood fiber hardboard, along with a lessening in the number of conventional steps, is disclosed. Hardboad is thereby produced by a process wherein drying oil is added to the wood chips prior to the pulp preparation stage; and optionally an oxidation accelerator is added during the pulp preparation stage. The hardboard is then formed in the usual manner without requiring the conventional addition of binder ingredients in the stock chest, without requiring conventional baking following pressing and, in the case of "tempered" hardboard without requiring the subsequent addition of tempering materials and baking following the conventional press operation.

REFERENCES:
patent: 2044213 (1936-06-01), Irvine
patent: 2388487 (1945-11-01), Linzell
patent: 2495043 (1950-01-01), Willey et al.
patent: 3130114 (1964-04-01), Nagy et al.

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