Patent ID: 8257524
Filing Date: 2012-09-04
Classification: B32B,C04B,E04C,Y10T

Abstract:
1. A method of manufacturing wallboard comprising: providing a first layer of facing material; creasing the first layer of facing material intermittently by applying a creaser wheel in a rotational manner in a first direction along a length of the first layer of facing material to create a series of creased portions and uncreased portions in a line extending in the first direction along the length of the first layer of facing material, wherein the creaser wheel comprises an alternating series of notches and teeth to create the series of uncreased portions and creased portions, with uncreased portions between creased portions, the creased portions comprising 30% to 90% of the line; providing a gypsum slurry on the first layer of facing material; and providing a second layer of facing material over the gypsum slurry.