Extruded particle board

Details Extruded particle board Extruded particle board

1994-06-17

1996-01-02

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Utilizing diverse solid particles

264109, 524 13, C08J 102, B29C 4700

Patent

active

054806020

ABSTRACT:
The present invention relates to an improved material and manufacturing method for the extrusion of particle board. It is shown herein that the use of fine particles of lignocellulosic material, typically wood, in combination with an extrudable plastic, allows an increased proportion of wood to be used (typically greater than 50% by weight, wood to plastic) and still obtain an extrudable particle board with good quality surface finish. The use of wood particles finer than approximately 40 mesh is used in the production of extruded particle board in the present invention. A coupling agent is also used consisting of a polyurethane-type coupling agent, added in an amount of approximately 3% by weight, to the extrusion mixture prior to extrusion. This combination of fine wood particles and the above coupling agent yields good quality extruded particle board having a majority of the composition thereof consisting of wood or other lignocellulosic material.

REFERENCES:
patent: 5064592 (1991-11-01), Ueda et al.
patent: 5082605 (1992-01-01), Brooks et al.
patent: 5088910 (1992-02-01), Goforth et al.

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