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US 10,132,082 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.
Claims8
A process for forming a roofing membrane composite, the process comprising:
- (a) heating a melt-extrudable, UV-curable pressure-sensitive adhesive to allow the adhesive to flow, where the adhesive consists of a polyacrylate elastomer and, optionally, one or more of photoinitiators, solvents, plasticizers, and resins selected from the group consisting of natural resins and hydrocarbon resins;
- (b) applying the adhesive to a planar surface of a thermoplastic or cured rubber roofing membrane panel for providing a weatherproof polymeric barrier to a building structure, to thereby form a coating layer of adhesive having a thickness of at least 152 μm, where the roofing membrane panel has a thickness of from about 500 μm to about 3 mm;
- (c) subjecting the coating layer of the adhesive to UV radiation to thereby effect crosslinking of the adhesive to form a cross-linked infinite polymer network;
- (d) applying a release member to the adhesive coating layer to form a roofing member composite;
- and
- (e) winding the composite.
3 more elements
Dependencies are inferred from the claim text.