公开(公告)号：US11029139B2

公开(公告)日：2021-06-08

申请号：US16375670

申请日：2019-04-04

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： Jerry D. Wonderlich ,  John A. Koch ,  Charles W. Cochran ,  Tim Lucas ,  Jenner Omodt

IPC: G01B5/28 ,  B26F3/00 ,  G01B5/14

Abstract: A procedure is provided for evaluating the score, snap and edge appearance of wallboard panels, and includes scoring a wallboard panel with a knife at a constant and known force using a benchtop board scoring device; snapping the scored panel in a Universal Board Testing Machine to measure the breaking force, forming a snapped panel edge; measuring a cleanliness of the snapped panel edge by placing a straight edge against the snapped panel edge and measuring gaps between the snapped panel edge and the straight edge in a plurality of locations on a face of the panel, and a plurality of locations on a back of the panel; and averaging all of the measured gaps to create an Index Score.