Coatings for building panels
AssigneeAWI Licensing LLC
InventorsJohn E. Hughes, Linzhu Zhang
Life of this patent
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Abstract
Described herein is a building panel comprising a first major exposed surface opposite a second major exposed surface, the building panel comprising: a body having a first major surface opposite a second major surface and a plurality of perforations extending from the first major surface toward the second major surface; a flame-retardant coating atop the first major surface of the body and extending into the plurality of perforations, the coating comprising a silicate compound and an amphoteric surfactant; and wherein the building panel has an airflow resistance of less than about 12,000 rayls as measured between the first major exposed surface and the second major exposed surface.
Claims18
A building panel comprising a first major exposed surface opposite a second major exposed surface, the building panel comprising:
- a body having a first major surface opposite a second major surface and a plurality of body perforations extending from the first major surface toward the second major surface;
- a flame-retardant coating atop the first major surface of the body and extending into the plurality of body perforations, the coating comprising a silicate compound and an amphoteric surfactant comprising cocamidopropyl betaine, wherein the amphoteric surfactant is present in an amount ranging from about 0.3 wt. % to about 0.5 wt. % based on the total weight of the flame-retardant coating, and wherein the flame-retardant coating is substantially free of non-ionic surfactant;
- wherein the building panel has an airflow resistance ranging from about 4,000 to about 12,000 rayls, the acoustic airflow resistance representing a pressure drop per unit airflow velocity through the building panel via the plurality of body perforations, as measured between the first major exposed surface and the second major exposed surface;
- and
- wherein the first major surface of the body is a cellulosic material.
A building panel comprising:
- a body having a first major surface opposite a second major surface and a plurality of body perforations extending from the first major surface toward the second major surface;
- a flame-retardant coating in an amount ranging from about 80 g/m2 to about 140 g/m2 atop the first major surface of the body and extending into the plurality of body perforations, the coating comprising a silicate compound and an amphoteric surfactant comprising cocamidopropyl betaine, wherein the amphoteric surfactant is present in an amount ranging from about 0.3 wt. % to about 0.5 wt. % based on the total weight of the flame-retardant coating;
- and
- wherein the building panel comprises:
- a first major exposed surface opposite a second major exposed surface;
- and
- a plurality of coated perforations extending from the first major exposed surface toward the second major exposed surface, wherein the coated perforations are formed by the flame-retardant coating located within of the plurality of the body perforations;
- and
- wherein the each of the plurality of coated perforations form an open channel that provide for fluid communication through the building panel between the first major exposed surface and the second major exposed surface.
A building panel comprising:
- a body having a first major surface opposite a second major surface and a plurality of body perforations extending from the first major surface toward the second major surface, each of the plurality of body perforations circumscribed by a body perforation wall;
- a flame-retardant coating atop the first major surface of the body and extending into the plurality of body perforations and coating at least a portion of the body perforation wall, the coating comprising a silicate compound and an amphoteric surfactant comprising cocamidopropyl betaine, wherein the amphoteric surfactant is present in an amount ranging from about 0.3 wt. % to about 0.5 wt. % based on the total weight of the flame-retardant coating, and wherein the flame-retardant coating is substantially free of non-ionic surfactant;
- and
- wherein each of the plurality of body perorations has a first diameter as measured by the distance between the body perforation wall;
- wherein the flame-retardant coating located within the body perforation and applied to the body perforation wall has a coating thickness;
- and
- wherein the coating thickness is equal to less than about 40% of the first diameter.
Dependencies are inferred from the claim text.