B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
92/62, 92/11.2
B32B 13/08 (2006.01) D21H 27/22 (2006.01) E04C 2/04 (2006.01) D21H 17/02 (2006.01) D21H 17/38 (2006.01) D21H 17/48 (2006.01)
Patent
CA 1077317
TREATED GYPSUM WALLBOARD PAPER ABSTRACT OF THE DISCLOSURE Drying oils are used to improve strength and durability characteristics of gypsum wallboard paper with many unexpected additional advantages. Applied before board manufacture, critical porosity characteristics are left uninterrupted. Applied after board manufacture, shear strengths are obtained beyond expectations.
309155
Kole Donald R.
Kossuth Donald A.
Na
National Gypsum Company
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