COMPOSITE TACK FILM FOR ASPHALTIC PAVING, METHOD OF PAVING, AND PROCESS FOR MAKING A COMPOSITE TACK FILM FOR ASPHALTIC PAVING

World Intellectual Property Organization Patent

APP PUB NO WO-2009021040-A2
SERIAL NO

PCTUS2008072339

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A tack film material comprises a carrier substrate comprising a polymer film having first and second major surfaces. A surface layer on the first and second major surfaces comprises a resinous non-asphaltic material or a material including about 50% or more resinous non-asphaltic component and about 50% or less of asphaltic component. The surface layer is capable of forming a bond with an adjacent layer of asphaltic paving material, when the surface layer is heated to a temperature of about 120°C or more under a pressure that is applied to the tack film material by an overlying layer of the asphaltic paving material having a thickness of about 3.8 cm (1.5 inch) or more laid. The surface layer is not tacky at a temperature of about 20°C and a pressure of about one atmosphere.

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