Opaque film-web laminate

Abstract From the Canadian patent

There is disclosed a laminate which comprises an outer layer of an opaque, biaxially oriented polymeric film structure, which comprises a voided core layer having an outer and an inner surface and comprising a matrix of a thermoplastic polymeric material in which are dispersed void-initiating solid particles which are phase-distinct from the matrix and about which particles are located opacifying voids; and at least one transparent skin layer adhering to at least the outer surfaces of the voided core layer and comprising a thermoplastic polymeric material the layer, being sufficiently thick substantially to prevent the asperities of the core layer from being manifest; the light transmission …