B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/103
B28B 23/00 (2006.01) B28B 19/00 (2006.01)
Patent
CA 1232122
METHOD FOR MAKING CEMENT BOARD Abstract of the Disclosure A cement board of homogeneous composition from face to face and hav- ing a substantially uniform thickness is made continuously by distributing a sole cementitious composition on a moving carrier sheet and smoothing the surface by rotating a cylindrical roller in a direction counter to the move- ment of the carrier sheet. An upper reinforcing network is submerged under the surface by feeding it under the counter rotating roller.
457998
Company United States Gypsum
Macrae & Co.
LandOfFree
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