Lofted mat for shingles
First Claim
Patent Images
1. A roofing shingle comprising:
- a unitary mat having a densified surface layer;
a layer of asphalt-based material coating the unitary mat; and
a layer of granules deposited on the asphalt-coated mat;
wherein the densified surface layer has regions of varying density;
wherein the variations in the density of the regions of the densified surface layer of the unitary mat give the shingle differences in thickness thereby giving the shingle an appearance of depth.
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Accused Products
Abstract
A roofing shingle comprising a mat having regions of various thicknesses. A layer of asphalt-based material coats the mat and a layer of granules is deposited on the asphalt-coated mat. The variations in the thickness of the regions of the mat give the shingle differences in thickness corresponding to the thickness variations in the regions of the mat, thereby giving the shingle an appearance of depth.
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Citations
32 Claims
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1. A roofing shingle comprising:
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a unitary mat having a densified surface layer; a layer of asphalt-based material coating the unitary mat; and a layer of granules deposited on the asphalt-coated mat; wherein the densified surface layer has regions of varying density; wherein the variations in the density of the regions of the densified surface layer of the unitary mat give the shingle differences in thickness thereby giving the shingle an appearance of depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of manufacturing roofing shingles comprising the steps of:
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providing a mat; selectively modifying regions of the mat to make those regions more dense, thereby producing a densified mat, the densified mat having regions of various thicknesses, with the more dense regions being of lesser thickness than other regions; coating the densified mat with roofing asphalt to make an asphalt-coated sheet; depositing granules onto the asphalt-coated sheet to form a granule-covered sheet; and cutting the granule-covered sheet into shingles; wherein the variations in the thickness of the regions of the mat give the shingle differences in thickness corresponding to the thickness variations in the regions of the mat, thereby giving the shingle an appearance of depth. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of manufacturing roofing shingles comprising the steps of:
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providing a mat; providing a base layer; applying the mat to the top of the base layer to form a multi-layered mat, the base layer being wider in the cross-machine direction than the mat so that the multi-layered mat has regions of various thickness; coating the multi-layered mat with roofing asphalt to make an asphalt-coated sheet; depositing granules onto the asphalt-coated sheet to form a granule-covered sheet; and cutting the granule-covered sheet into shingles; wherein the variations in the thickness of the regions of the multi-layered mat give the shingle differences in thickness corresponding to the thickness variations in the regions of the multi-layered mat, thereby giving the shingle an appearance of depth. - View Dependent Claims (26, 27, 28, 29)
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30. A roofing shingle comprising:
- a unitary mat having a densified surface layer, the densified surface layer having tab regions and cutout regions of various thickness and density; and
a coating layer applied to the unitary mat; wherein the tab regions of the unitary mat have a lower density than the cutout regions of the unitary mat. - View Dependent Claims (31, 32)
- a unitary mat having a densified surface layer, the densified surface layer having tab regions and cutout regions of various thickness and density; and
Specification