Multilayer films having at least five film layers, wherein at least one layer is flame retardant
Assignee3M Innovative Properties Company
InventorsRichard A. Kollaja, Douglas A. Devens, Patrise M. Russell, Mark A. Hoisington
Life of this patent
Estimating the term…
Abstract
The present invention provides unified multilayer films having at least one layer that includes a flame retardant film layer. In preferred embodiments the flame retardant film layer is an internal layer. In particularly preferred embodiments of the present invention, multilayer films include flame retardant layers alternating with non flame retardant layers. In other preferred embodiments, multilayer films include alternating layer of different flame retardant materials.
Claims17
A unified multilayer film of at least five continuous film layers wherein at least one layer comprises a flame retardant film layer and at least one layer comprises a non-flame retardant film layer, wherein the flame retardant film comprises a halogenated organic flame retardant additive incorporated into a melt processible polymer.
Dependencies are inferred from the claim text.