Patent ID: 9630341
Date: 2017-04-25
CPC Classifications: B28B,B29C

Claim:
1. A method for molding a part from a fiber cement slurry, the fiber cement slurry comprising cementitious material, additives, fibers and water, said method comprising the steps of: a) providing a mold assembly including at least a first and second molding sections, the first molding section being covered with a bladder and the second molding section being covered with a permeable filter, the first and second molding sections defining, at least partially, a chamber for receiving the fiber cement slurry, the second molding section comprising at least one evacuating channel; b) inserting the fiber cement slurry in the chamber; c) inflating the bladder for compressing the fiber cement slurry between said bladder and the second molding section, thereby evacuating the water contained in the fiber cement slurry from the chamber through the filter and through the at least one evacuating channel while retaining the cementitious material and fibers within the chamber; d) deflating the bladder; e) removing the mold assembly, the method thereby providing a shaped body having sufficient green strength to be handled.