SUBSTRATE FOR WALLBOARD JOINT TAPE AND PROCESS FOR MAKING SAME

摘要

A multi-ply paper substrate is provided, which comprises at least two plies bonded to one another by an adhesive; a basis weight of 80-200 gsm; an internal bond of 10-180 milli-ft.-lb/sq. in. as measured by TAPPI method 541; an MD tensile of 20-300 lbf/inch width as measured by TAPPI method 494; and a CD tensile of 10-300 lbf/inch width as measured by TAPPI method 494. Methods of making and using the paper substrate, products made therefrom, and uses of the paper substrate are also provided.

主权项

1. A method of making a multi-ply paper substrate, comprising using an air-laid papermaking machine, forming at least two layers, contacting one or both of the layers with an adhesive, and contacting the layers with one another, to form a two-layered web; and
compressing the two-layered web, to make the paper substrate, the multi-ply paper comprising
at least two plies bonded to one another by an adhesive;a basis weight of 80-200 gsm;an internal bond of 10-180 milli-ft.-lb/sq. in. as measured by TAPPI method 541;an MD tensile of 20-300 lbf/inch width as measured by TAPPI method 494; anda CD tensile of 10-300 lbf/inch width as measured by TAPPI method 494.