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US 8,100,226 B2Granted
Porous nonwoven scrims in acoustical panels
AssigneeUSG Interiors, Inc.
InventorsBangji Cao, Gregory Palm, Weixin D. Song
Life of this patent
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Abstract
An acoustical building panel and method of manufacturing it are disclosed. Embodiments of the panel include a porous nonwoven scrim, a coating deposited on the scrim, a base mat, and an adhesive deposited on either the base mat or the scrim in a discrete form such as in droplets. Embodiments of the method of manufacture include steps of perforating the base mat, applying the adhesive to the base mat in the discrete form, laminating the scrim onto the base mat, and applying the coating to the scrim surface.
Claims15
An acoustical building panel comprising:
- a base mat made from a water based composition;
- a porous nonwoven scrim;
- a coating applied to an outer surface of the scrim;
- an adhesive deposited in a discrete or perforate form between the scrim and the base mat;
- the scrim having an air flow resistance of less than about 30 Rayls such that it is sufficiently porous to allow the coating to penetrate the scrim from an outer surface of the scrim to bond to the base mat, the coating increasing a peel strength of the scrim to the base mat over a peel strength made by the adhesive by at least 40%.
2 more elements
An acoustical building panel comprising:
- a base mat;
- a porous nonwoven scrim;
- and
- a coating applied to an outer surface of the scrim;
- wherein the scrim has a specific air flow resistance of less than about 30 Rayls and the scrim surface coating comprises about 50 percent to about 90 percent
- inorganic pigments based on total solids content,
- the scrim surface coating being effective to wick through and adhere the scrim to the base mat.
4 more elements
Dependencies are inferred from the claim text.