Patent ID: 7527857
Filing Date: 2009-05-05
Classification: B32B,C09J,G02B,Y10T

Abstract:
1. A multilayer film comprising a resin base film provided with an adhesive resin layer capable of sticking to inorganic materials, wherein the multilayer film has a first average thermal expansion coefficient at temperatures from 60° C. to 80° C. measured during a first raise of the temperature of the multilayer film from 30° C. to 130° C. by heating the multilayer film, which first average thermal expansion coefficient is larger by 30 to 400 ppm/° C. than a second average thermal expansion coefficient measured at temperatures from 60 to 80° C. during a second raise of the temperature from 30° C. to 130° C. after cooling the multilayer film from 130° C. to 30° C. subsequent to the first raise.