Fiber mat, method of making the fiber mat, and bituminous roofing product
AssigneeSaint-Gobain Adfors Canada, Ltd.
InventorsNancy E. BROWN, Matthew Gacek, Tao Yu
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Abstract
A fiber mat includes a unitary assembly of fibers including at least a first set of fibers and at least a first binder comprising an organic resin, wherein the unitary assembly of fibers includes a minority portion and a majority portion different than the minority portion, wherein the fiber mat provides at least a 5% increase in tear when placed in a bituminous roofing product compared to an equivalent bituminous roofing product made with a fiber mat of equivalent weight containing a homogenous mat structure.
Claims20
A fiber mat comprises:
- a unitary assembly of fibers comprising at least a first set of fibers and at least a first binder comprising an organic resin, wherein the unitary assembly of fibers comprises a minority portion and a majority portion different than the minority portion, wherein the fiber mat provides at least a 5% increase in tear when placed in a bituminous roofing product compared to an equivalent bituminous roofing product made with a fiber mat of equivalent weight containing a homogenous mat structure.
A method of making a fiber mat comprises:
- providing a unitary assembly of fibers comprising at least a first set of fibers;
- applying at least a first binder to the unitary assembly of fibers, wherein the at least first binder comprises an organic resin;
- and
- curing the at least first binder, wherein the unitary assembly of fibers comprises a minority portion and a majority portion different than the minority portion, wherein the fiber mat provides at least a 5% increase in tear when placed in a bituminous roofing product compared to an equivalent bituminous roofing product made with a fiber mat of equivalent weight containing a homogenous mat structure.
A bituminous roofing product comprises a fiber mat comprising a unitary assembly of fibers comprising at least a first set of fibers;
- and
- at least a first binder comprising an organic resin, wherein the unitary assembly of fibers comprises a minority portion and a majority portion different than the minority portion, wherein the fiber mat provides at least a 5% increase in tear when placed in a bituminous roofing product compared to an equivalent bituminous roofing product when made with a fiber mat of equivalent weight containing a homogenous mat structure;
- and
- at least one coating of asphalt.
Dependencies are inferred from the claim text.