Encapsulants For Window Assemblies

摘要

A window assembly for a vehicle having an essentially chlorine-free modified polyolefin primer (24) disposed onto a transparent pane (12) and a two-shot encapsulant applied onto the primer is provided. The two-shot encapsulant includes a first encapsulation layer (22A) disposed on the primer (24) and a second encapsulation layer (22B) disposed on the first encapsulation layer (22A). The first encapsulation layer (22A) has a Shore D hardness of at least 39 and a Flexural modulus of at least 100 MPa, while the second encapsulation layer (22B) has a Shore A hardness of less than 90.

主权项

1. A window assembly comprising:
a transparent pane having a first surface, a second surface, and an edge defined between said first surface and said second surface; a primer comprising a modified polyolefin disposed on at least one of said first surface and said second surface of said transparent pane; a first encapsulation layer disposed on said primer such that said primer is located between said transparent pane and said first encapsulation layer, said first encapsulation layer having a Shore D hardness of at least 39 and a Flexural modulus of at least 100 MPa; and a second encapsulation layer disposed on said first encapsulation layer such that said first encapsulation layer is located between said primer and said second encapsulation layer, said second encapsulation layer having a Shore A hardness of less than 90.