Apparatus for making sawdust chipboard

Details Apparatus for making sawdust chipboard Apparatus for making sawdust chipboard

1976-01-29

1977-07-12

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Air felting type shaping means

Means forming stratified products

264113, 264122, 156 622, B29J 502

Patent

active

040351203

ABSTRACT:
A chipboard structure is disclosed which is made substantially of 100% sawdust waste material. The chipboard has a core portion which contains the coarsest particles of the sawdust, the surface portions of the chipboard containing the finest fraction of the sawdust, intervening portions of the chipboard containing fractions which increase in size from the surface to the core portion of the chipboard. The method and apparatus involve the use of sawdust having a width and/or thickness no greater than 4.75 mm, the fractions of the sawdust having a particle size greater than 0.1 mm being sliced to increase the quantity of the fractions below 0.1 mm. Because the small particles are randomly disposed in the chipboard in directions not only parallel to the plane but also perpendicular and at an angle thereto, characteristics are obtained which are as good as chipboard produced from conventional materials other than sawdust.

REFERENCES:
patent: 2276869 (1942-03-01), Pond
patent: 3028287 (1962-04-01), Greten
patent: 3038527 (1962-06-01), Greten
patent: 3134145 (1964-05-01), Miller
patent: 3183287 (1965-05-01), Fischer

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