Roofing materials including a parting agent layer

Patent metadata

Field	Value
Publication number	US-12091859-B2
Application number	US-201915733973-A
Country	US
Kind code	B2
Filing date	Jun 28, 2019
Priority date	Jun 29, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

Asphalt-based roofing materials, such as shingles, are disclosed that include a layer of parting material. The layer of parting material is applied to at least a part of the top, bottom, or both the top and the bottom of the shingle. When the shingle includes the parting material on the bottom, the layer of parting material replaces all or a portion of a backdust layer. When the shingle includes the layer of parting material on the top, the layer of parting material replaces a portion of granules on the shingle. The layer of parting material can be applied to the shingle in patterns and configurations that permit an adhesive to be applied to the shingle and function as intended. The parting material may include a metal salt of a fatty acid, a polyolefin, and/or a crosslinkable silane.

First claim

What is claimed is:

1. A shingle comprising:
a first asphalt-coated substrate defining a headlap portion and a tab portion each having opposed top and bottom surfaces;
a layer of parting material applied to at least a portion of the bottom surface of the headlap portion and to at least a portion of the bottom surface of the tab portion, wherein the layer of parting material comprises at least one of a metal salt of a fatty acid, a polyolefin, and a crosslinkable silane, and wherein the layer of parting material has a thickness of 0.25 μm to 5 μm; and
an adhesive applied to at least a portion of the bottom surface of the tab portion,
wherein the shingle is devoid of a backdust particulate layer.

2. The shingle according to claim 1 , wherein the metal salt of a fatty acid is selected from group consisting of metal laurates, metal myristates, metal palmitates, metal stearates, and combinations thereof.

3. The shingle according to claim 2 , wherein the metal stearate is selected from the group consisting of zinc stearate, calcium stearate, aluminum stearate, magnesium stearate, and combinations thereof.

4. The shingle according to claim 1 , wherein the metal salt of a fatty acid includes a metal stearate.

5. The shingle according to claim 1 , wherein the layer of parting material is separated from the adhesive by a gap of 0.0625 inches to 1 inch.

6. The shingle according claim 1 , wherein the layer of parting material abuts the adhesive.

7. The shingle according to claim 1 , wherein the layer of parting material overlaps with the adhesive.

8. The shingle according to claim 7 , wherein the adhesive is applied onto the layer of parting material and a thickness of the layer of parting material that overlaps with the adhesive is less than a thickness of the layer of parting material that does not overlap with the adhesive.

9. The shingle according to claim 7 , wherein the adhesive is applied onto the layer of parting material and an area weight of the parting agent in the layer of parting material that overlaps with the adhesive is less than an area weight of the layer of parting material that does not overlap with the adhesive.

10. The shingle according to claim 1 , further comprising a second layer of parting material applied to at least a portion of the top surface of the headlap portion.

11. The shingle according to claim 1 , further comprising a second asphalt-coated substrate having opposed top and bottom surfaces, wherein the top surface of the second asphalt-coated substrate is attached to the bottom surface of the tab portion of the at least one asphalt-coated substrate.

12. A shingle comprising:
an asphalt-coated substrate defining a headlap portion and a tab portion each having opposed top and bottom surfaces; and
a layer of parting material applied to at least a portion of the bottom surface of the headlap portion and to at least a portion of the bottom surface of the tab portion, wherein the layer of parting material comprises a liquid-applied parting agent comprising at least one of a metal salt of a fatty acid, a polyolefin, and a crosslinkable silane, and wherein the layer of parting material has a thickness of 0.25 μm to 5 μm,
wherein the bottom surface of the headlap portion and the bottom surface of the tab portion are devoid of a backdust particulate comprising sand, talc, mica, calcium carbonate, ground recycled glass, quartz, feldspar, dolomite, or coal slag.

13. The shingle according to claim 12 , wherein the metal salt of a fatty acid is selected from group consisting of metal laurates, metal myristates, metal palmitates, metal stearates, and combinations thereof.

14. The shingle according to claim 13 , wherein the metal stearate is selected from the group consisting of zinc stearate, calcium stearate, aluminum stearate, magnesium stearate, and combinations thereof.

15. The shingle according to claim 12 , wherein the metal salt of a fatty acid consists of one or more of zinc stearate and calcium stearate.

16. A shingle comprising:
a substrate having opposed top and bottom surfaces, wherein the substrate is coated with a first asphalt coating on the top surface of the substrate and a second asphalt coating on the bottom surface of the substrate; and
a surface layer of granules applied to at least a portion of the first asphalt coating on the top surface of the substrate; and
a layer of parting material applied to at least a portion of the second asphalt coating on the bottom surface of the substrate, wherein the layer of parting material comprises a liquid-applied parting agent comprising at least one of a metal salt of a fatty acid, a polyolefin, and a crosslinkable silane, and wherein the layer of parting material has a thickness of 0.25 μm to 5 μm,
wherein the second asphalt coating on the bottom surface of the substrate is devoid of a backdust particulate.

Assignees

• Owens Corning Intellectual Capital Llc

Inventors

• Verhoff Jonathan M
• Schweiger Scott W
• Click Kevin A
• Lewandowski Laurand H
• Hoffman Benjamin R

Classifications

• E04D2001/005

  the roofing elements having a granulated surface · CPC title

• E04D1/20 Primary

  of plastics; {of asphalt;} of fibrous materials · CPC title

• D06N5/00

  Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch (compositions of bituminous materials C08L95/00, roof covering E04D5/00, roofing underlays E04D12/002) · CPC title

• B32B2264/10

  Inorganic particles · CPC title

• B32B2260/042

  Bituminous or tarry substance · CPC title