Treated gypsum wallboard paper

B - Operations – Transporting – 32 – B

Patent

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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

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