CPC E04D 5/148 (2013.01) [B32B 7/12 (2013.01); B32B 25/042 (2013.01); B32B 25/14 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 37/12 (2013.01); C09J 7/29 (2018.01); C09J 7/385 (2018.01); C09J 7/403 (2018.01); E04D 5/06 (2013.01); E04D 5/10 (2013.01); B32B 2037/1253 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/748 (2013.01); B32B 2419/06 (2013.01); C09J 2301/414 (2020.08); C09J 2423/166 (2013.01); C09J 2433/00 (2013.01)] | 12 Claims |
1. A roofing membrane composite comprising:
(i) a roofing membrane panel having opposed first and second planar surfaces and first and second lateral edges, said first planar surface including a roof-substrate contacting portion and a lap portion adjacent to one of said first and second lateral edges;
(ii) a layer of UV-cured pressure-sensitive adhesive disposed on said roof-substrate contacting portion and said lap portion, where the layer of UV-cured pressure-sensitive adhesive is disposed on the entirety of the roof-substrate contacting portion from the first lateral edge to the second lateral edge, the UV-cured pressure-sensitive adhesive including a UV-cured polyacrylate having a gel content, as determined by THF extraction after boiling in THF after four hours, of at least 50% by weight, and where the polyacrylate, prior to UV curing, has a Tg of less than −20° C. and a number average molecular weight of from about 100 to about 350 kg/mol, and where the degree of cure of said UV-cured pressure-sensitive adhesive varies by no more than 10% between said roof-substrate contacting portion and said lap portion; and
(iii) a release member removable affixed to said UV-cured adhesive in both said roof-substrate contacting portion and said lap portion, where said UV-cured adhesive disposed on said roof-substrate portion and said lap portion is substantially homogeneous.
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