YARN-CEMENT SLAB MANUFACTURING METHOD FOR PRODUCTION OF FIBER-CEMENT SLABS Russian patent published in 2017 - IPC B28B1/52 

FIELD: technological processes.

SUBSTANCE: method comprises the steps for producing a continuous fiber-cement multilayer preform in production area by laying at least one monolayer of first type of monolayers having a first width (W1) in transverse direction and at least one monolayer of the second type of monolayers having a second width (W2) in said transverse direction. Herewith specified first width (W1) is less than said second width (W2). At least one monolayer of the second type of monolayers extends laterally beyond at least one monolayer of the first type of monolayers. At least one layer of said continuous fiber-cement multilayer preform is accumulated on a profiled collecting roller. Said collecting roller has a recess in axial direction along at least a part of its circumference, as a result of which at least the first monolayer is produced inside said recess, whereby an accumulated blank is produced. Said accumulated blank is removed from the collecting roller, whereby an uncured shaped fiber-cement slab is produced. Said uncured fiber-cement slab is cured to produce said shaped fiber-cement slab.

EFFECT: increase of fiber-cement slab production efficiency.

14 cl, 18 dwg