Method for the production of high density fiberboard

Details Method for the production of high density fiberboard Method for the production of high density fiberboard

1984-12-31

1987-01-06

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With formation of web or article

162 9, 162 25, 162 26, 162 90, D21B 116

Patent

active

046344985

ABSTRACT:
High strength and high density wood fiberboard is formed by treating the wood fiber source material with a highly alkaline solution, such as sodium hydroxide solution, before interfelting the fibers into a loose mat. The wood source material may be treated after refining the material into fibers, but preferably, the wood source material is treated before fibrillation. Further, wood fiber source material may be partially neutralized before felting without substantial change in the resulting densities and strengths.

REFERENCES:
patent: 1881418 (1932-10-01), Lathrop et al.
patent: 2454534 (1948-11-01), Walter
patent: 2482142 (1949-09-01), Chidester et al.
patent: 3202568 (1965-08-01), Coggan et al.
patent: 3597310 (1971-08-01), Sumi et al.

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