B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/100, 25/46
B28B 1/00 (2006.01) B28B 11/00 (2006.01) B28B 11/08 (2006.01) B28B 11/16 (2006.01) E04D 1/16 (2006.01)
Patent
CA 1240486
ABSTRACT OF THE DISCLOSURE A PLATE WITH A DECORATIVE PATTERN AND A METHOD AND AN APPARATUS FOR PRODUCING THE SAME In order to produce a decorative pattern on the surface of a layer of material in a soft plastic condition, the surface is whipped by the free end portions of a plurality of flexible thread-like members. The whipping action provides random depressions in the surface. The thread-like members are preferably fastened to the peripheral surface of a rotatable body which is spaced from the surface to be treated at a distance which is substantially smaller than the length of the thread-like members, and the surface to be treated is moved in rela- tion to the rotatable body while this body is rotated. By this whip- ping action it is possible to make surface patterns imitating a slaty surface or the surface of other natural materials. Such decorative surfaces may be made on layers of materials which are cut into plates or blocks for use as building materials after firing, setting or harden- ing of the material. As an example, the decorative pattern or struc- ture may be made on plates to be used as roofing plates.
481066
Gregersen Johan C.
Nielsen Jens P.
Dansk Eternit-Fabrik A/s
Mccarthy Tetrault Llp
LandOfFree
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