초록 ▼

A polymeric laminate for use in polymeric films, and packaging material and packages made therefrom, that is roughened or knurled to produce a series of nicks or cuts over substantially the entire surface area of the laminate, producing an easy-opening feature. The laminate may be a multilayer, poly

A polymeric laminate for use in polymeric films, and packaging material and packages made therefrom, that is roughened or knurled to produce a series of nicks or cuts over substantially the entire surface area of the laminate, producing an easy-opening feature. The laminate may be a multilayer, polymeric structure that may comprise an oriented polypropylene, polyethylene terephthalate, or a biaxially oriented nylon. The packaging material of the invention may contain a sealant film, either a single layer or multilayer film, and may also comprise an intermediate layer of foil.

대표청구항 ▼

[ Having thus described the invention, what is claimed is:] [1.] A multilayer polymeric packaging material, comprising:(a) a first layer, constituting the outer layer of said packaging material having first and second surfaces, said first surface being roughened over substantially the entire surface

[ Having thus described the invention, what is claimed is:] [1.] A multilayer polymeric packaging material, comprising:(a) a first layer, constituting the outer layer of said packaging material having first and second surfaces, said first surface being roughened over substantially the entire surface area of said first surface;(b) a second layer of a polymeric adhesive, said second layer having first and second surfaces, said first surface of said second layer disposed in surface-to-surface contact with said second surface of said first layer;(c) a third layer of a foil, said third layer having first and second surfaces, said first surface of said third layer disposed in contact with said second surface of said second layer;(d) a fourth layer of a polymeric adhesive, said fourth layer having first and second surfaces, said first surface of said fourth layer disposed in contact with said second surface of said third layer; and(e) a fifth layer of a polymeric sealant film, said fifth layer having first and second surfaces, said first surface of said fifth layer disposed in contact with said second surface of said fourth layer.