DE203367C - - Google Patents

Description

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PATENT OFFICE.

PATENT LETTERING

CLASS 396. GROUP

Process for the production of synthetic wood. Patented in the German Empire on February 27, 1907.

The present invention relates to the manufacture of a product which. all properties of natural wood. The method offers the advantage in particular, without Applying greater pressure to achieve a product that is not significantly harder than is natural wood, i.e. just as it can be processed.

The new product mainly consists of

ίο a mixture of wood fibers, which after previously treated with alkaline agents in a known manner and more or less were bleached, arranged in the same direction, then by means of a binder, like casein, glued together and then in more or less thick layers with one Pulp, which is made from wood sawdust and casein. The one made in this way The product is sufficiently plastic to be molded directly, possibly with simultaneous pressing.

The product is obtained in the following way: The fibers of any origin, for example . Coming from alfa grass, jute, New Zealand flax, palm trees and the like, become of length after being piled up in a toasting box and then treated with a caustic alkali solution subject. Then they are more or less bleached, depending on the color they are one wants to achieve.

The toasted and bleached fibers are then passed between a series of draw rollers brought, which may be provided with longitudinal grooves that facilitate the separation of the fibers.

Then the fibers are mixed with a binder, which is obtained by . it is expedient to dissolve the casein in its own • weight of ammonia and to do this a small amount Amount of linseed oil, resin and wood tar sets. In certain cases you will go through the casein Can replace arabic gum or rubber solution.

This gives a plate of glued fibers, which are then dried in a suitable manner will. ■. ■

Then the plate is cut into a number of horizontal layers with a knife, between which one brings layers of a pulp, which is essentially a mixture of casein and finely ground wood flour consists. This pulp is preferably made in the following way:

100 parts by weight of finely ground wood flour are sifted with. 33 parts Casein mixed, which is dissolved in ammonia when heated slightly, also with eight parts of linseed oil and four parts of resin, which is either dissolved in ammonia or fine powdered mixed with the linseed oil.

The bonded fibers bonded in layers with this binder can be used with or shaped in any way without pressure.

The binders for the fibers and the sawdust can be colored to match that To give the product any appearance.

One already has cellulose pretreated with alkalis with binders for the production of artificial wood used. After the previous

However, fibrous waste wood is used lying in its longitudinal direction to be ordered. In addition, a special binder is used. The products obtained by the known processes are essentially harder than ordinary wood and therefore cannot be like the latter machined while the new product is machined just like wood ίο behaves. The wood fibers used also imitate the structure of natural wood naturally after. One can use the mass in the manufacture of threads, cords and the like made of fibers, wire, iron strips for reinforcement and during pressing Apply decorations.

Claims (1)

Patent claim: Process for the production of synthetic wood, characterized in that ¹ .. and bleached wood fiber material pretreated with alkali is arranged in the same fiber direction and the individual fibers are cleaned with a binder obtained by mixing casein with finely ground wood flour.