| 摘要 |
<p>A method for forming ceramic tiles or slabs having veins similar to those of the natural stones, beginning from powders which are fed to a hopper (2) from which they exit, in the form of a continuous strip (100), atop a movable horizontal surface (10), comprising the following steps:
a) feeding said hopper (2) with successive loads of different powders, so to form a line of separation (101) between adjacent loads;
b) detecting the coordinates of at least a discrete number of points of the level profile (P) in the hopper (2) of each powder load;
c) transmitting the data of said coordinates to a programmed logical unit (60) which drives vein tracing means (40); and
d) creating at least one vein (102) on said strip (100) by means of said tracing means (40), said vein (102) being made by following a motion law which has been previously set in said logical unit (60), said motion law being a function of said coordinates.
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