MULTILAYER INTERLAYER POLYMER FILM FOR FIRE-SCREEN GLAZINGS AND RELATED FIRE-SCREEN PRODUCTS

摘要

A multilayer interlayer polymer film for use within and a high clarity and high efficiency fire-screen glazing or related fire-screen product uses a particular ordering of layers. The particular ordering of layers includes: (1) a core layer comprising one of a sulfur containing thermoplastic polymer material and a fluorine containing thermoplastic polymer material; (2) at least one intermediate layer laminated to the core layer and comprising the other of the sulfur containing thermoplastic polymer material and the fluorine containing thermoplastic polymer material; and (3) at least one skin layer laminated to the at least one intermediate layer and comprising a thermoplastic polyurethane material. The multilayer interlayer polymer film provides cost effective and efficient fire-screen glazings and related fire-screen products due to use of the thermoplastic polyurethane polymer material and the sulfur containing thermoplastic polymer materials which also may be used in absence of the fluorine containing thermoplastic polymer material to provide an additional embodiment.