US 12,446,329 B2
Photovoltaic module frontsheet and backsheet
Alexander Sharenko, Berkeley, CA (US); Paul Martin Adriani, Palo Alto, CA (US); and Ryan Lemon Devine, Richmond, CA (US)
Assigned to GAF Energy LLC, Parsippany, NJ (US)
Filed by GAF Energy LLC, Parsippany, NJ (US)
Filed on Jun. 1, 2023, as Appl. No. 18/327,724.
Application 18/327,724 is a continuation of application No. 17/881,485, filed on Aug. 4, 2022, granted, now 11,705,531.
Application 17/881,485 is a continuation of application No. 17/563,786, filed on Dec. 28, 2021, granted, now 11,424,379, issued on Aug. 23, 2022.
Application 17/563,786 is a continuation of application No. 17/166,640, filed on Feb. 3, 2021, granted, now 11,217,715, issued on Apr. 4, 2022.
Claims priority of provisional application 63/111,196, filed on Nov. 9, 2020.
Claims priority of provisional application 63/018,013, filed on Apr. 30, 2020.
Claims priority of provisional application 63/018,003, filed on Apr. 30, 2020.
Prior Publication US 2023/0327033 A1, Oct. 12, 2023
Int. Cl. H10F 19/80 (2025.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 17/10 (2006.01); B32B 25/16 (2006.01); B32B 27/12 (2006.01); B32B 27/18 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 37/12 (2006.01); H10F 19/85 (2025.01)
CPC H10F 19/804 (2025.01) [B32B 5/02 (2013.01); B32B 7/12 (2013.01); B32B 17/10 (2013.01); B32B 25/16 (2013.01); B32B 27/12 (2013.01); B32B 27/18 (2013.01); B32B 27/283 (2013.01); B32B 27/304 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B32B 37/1207 (2013.01); H10F 19/807 (2025.01); B32B 2305/72 (2013.01); B32B 2307/3065 (2013.01); B32B 2307/7265 (2013.01); B32B 2327/18 (2013.01); B32B 2457/12 (2013.01); H10F 19/85 (2025.01)] 14 Claims
OG exemplary drawing
 
1. A roofing system, comprising:
a roof deck; and
a photovoltaic module installed on the roof deck,
wherein the photovoltaic module comprises:
a frontsheet;
a first encapsulant layer;
at least one solar cell,
wherein the first encapsulant layer is between the frontsheet and the at least one solar cell;
a second encapsulant layer,
wherein the at least one solar cell is between and encapsulated by the first encapsulant layer and the second encapsulant layer; and
a backsheet,
wherein the backsheet is in contact with the second encapsulant layer,
wherein the backsheet provides a lowermost surface of the photovoltaic module on the roof deck,
wherein the backsheet comprises a single layer, moisture-resistant, fire-retardant membrane,
wherein the membrane is composed of thermoplastic polyolefin (TPO), and
wherein the backsheet has a water vapor transmission rate of 0.01 U.S. perm to 0.05 U.S. perm as measured by ASTM E 96, Procedure B.