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US 10,519,663 B2Granted
Peel and stick roofing membranes with cured pressure-sensitive adhesives
AssigneeFirestone Building Products Company, LLC
InventorsJiansheng Tang, Michael J. Hubbard
Life of this patent
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Abstract
A membrane composite comprising a polymeric membrane panel, an adhesive layer, and a release member, where the adhesive layer is a pressure-sensitive adhesive that is at least partially cured, and where the adhesive layer has a thickness of at least 102 μm.
Claims17
A process for forming a roofing membrane composite, the process comprising:
- heating a melt-extrudable, UV-curable pressure-sensitive adhesive composition to allow the adhesive to flow, where the adhesive composition comprises a polyacrylate elastomer and, optionally, one or more of photoinitiators, solvents, plasticizers, and resins;
- applying the adhesive composition to a planar surface of a roofing membrane panel, where the membrane panel is adapted to provide a weatherproof polymeric barrier to a building structure, to thereby form an adhesive layer having a thickness of at least 152 μm;
- subjecting the adhesive layer to UV radiation to thereby effect crosslinking of the polyacrylate elastomer to form a cured adhesive layer comprising a cross-linked infinite polymer network;
- applying a release member to the cured adhesive layer to form a roofing member composite;
- and
- winding the composite.
3 more elements
Dependencies are inferred from the claim text.