US 12,435,250 B2
Double pass process of making a self adhering roofing membrane with improved adhesion at lower installation temperature
Jordan Kortmeyer, Parker, CO (US); Diego Pedrazzoli, Littleton, CO (US); Daniel Blasini, Lakewood, CO (US); and Bradley Crume, Lakewood, CO (US)
Assigned to Johns Manville, Denver, CO (US)
Filed by JOHNS MANVILLE, Denver, CO (US)
Filed on Dec. 1, 2022, as Appl. No. 18/073,121.
Application 18/073,121 is a division of application No. 17/324,232, filed on May 19, 2021, granted, now 11,549,037.
Prior Publication US 2023/0087595 A1, Mar. 23, 2023
Int. Cl. C09J 7/40 (2018.01); C09J 7/24 (2018.01); C09J 7/29 (2018.01); C09J 7/35 (2018.01); C09J 7/38 (2018.01); E04D 5/08 (2006.01); E04D 5/14 (2006.01)
CPC C09J 7/401 (2018.01) [C09J 7/243 (2018.01); C09J 7/245 (2018.01); C09J 7/29 (2018.01); C09J 7/35 (2018.01); C09J 7/383 (2018.01); E04D 5/08 (2013.01); E04D 5/148 (2013.01); C09J 2301/122 (2020.08); C09J 2301/208 (2020.08); C09J 2301/304 (2020.08); C09J 2301/416 (2020.08); C09J 2409/00 (2013.01); C09J 2423/006 (2013.01); C09J 2423/166 (2013.01); Y10T 428/14 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a self-adhering roofing membrane, comprising:
applying a first adhesive layer to a major surface of a polymeric roofing membrane;
at least partially curing the first adhesive layer;
applying pressure to the polymeric roofing membrane and the first adhesive layer prior to applying a UV curable adhesive layer;
applying the UV curable adhesive layer atop the at least partially cured first adhesive layer;
exposing the UV curable adhesive to a UV light source to at least partially cure the UV curable adhesive layer; and
compressing the polymeric roofing membrane, the first adhesive layer, and the UV curable adhesive layer to form a self-adhering roofing membrane, wherein:
after compression the UV curable adhesive layer has a thickness of less than about 4 mil; and
the self-adhering roofing membrane remains tacky at a temperature of 15° F.