Patent ID: 9028644
Filing Date: 2015-05-12
Classification: B32B

Abstract:
1. A method for producing a laminated glass, comprising laminating between two glass sheets at least one film A, having a glass transition temperature TA and containing a polyvinyl acetal PA and optionally at least one plasticiser WA, and at least one film B, having a glass transition temperature TB and containing a polyvinyl acetal PB and at least one plasticiser WB, wherein, before the lamination process, film B has a proportion of plasticiser WB from 24.1 to 36.0% by weight, film A has a proportion of plasticiser WA from 23.9 to 0% by weight and film A has a thickness of no more than 30% of the thickness of film B, wherein film B has a Tg of from 10-25° C.