Heat weldable roofing membrane

Details Heat weldable roofing membrane Heat weldable roofing membrane

2005-03-08

2005-03-08

Ruddock, Ula (Department: 1771)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Scrim

Woven scrim

C442S002000, C442S038000, C442S043000, C442S045000, C442S046000, C442S049000

Reexamination Certificate

active

06864195

ABSTRACT:
A roofing membrane includes a substrate sheet formed of a thermoplastic vulcanizate (TPV) and a film layer of thermoplastic polyolefin (TPO) adhered to at least one surface of the substrate sheet. The TPV preferably includes a copolymer of ethylene and a carbonyl containing monomer dynamically vulcanized in a polyolefin thermoplastic, preferably metallocene-catalyzed polyethylene. A scrim reinforcement layer is optionally embedded in the TPV layer. When installed on a roof substrate, the membrane can be sealed by heat welding the seams of the membrane sheets.

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