Coextruded pressure sensitive label stock material with integral peelable backing

DETAILED DESCRIPTION What is claimed is: 1.
A biaxially oriented label stock product of which comprises: (a) a facing layer in the form of a polyolefin film having an upper surface and a lower surface, a pressure sensitive adhesive component incorporated within said facing layer or applied as a coating to the lower surface thereof; and, (b) a release layer in the form of a polyolefin film having an upper surface and a lower surface and having a release agent component for the pressure sensitive adhesive component of facing layer (a) incorporated therein or applied as a coating to the upper surface thereof, the lower surface of facing layer (a) being peelably affixed to the upper surface of said release layer (b).
2.
The label stock product of claim 1 wherein facing layer (a) is a single layer of polyproplene film.
3.
The label stock product of claim 1 wherein facing layer (a) is a laminate.
4.
The label stock product of claim 3 wherein the laminate of facing layer (a) comprises: (i) a thermoplastic matrix substrate layer having an upper and lower surface, a pressure sensitive adhesive component incorporated within said substrate layer and a strata of voids located within said substrate layer; positioned at least substantially within at least a substantial number of said voids is at least one spherical void-initiating particle which is phase distinct and incompatible with the matrix material, the void space occupied by said particle being substantially less than the volume of said void, with one generally cross-sectional dimension of said particle at least approximating a corresponding cross-sectional dimension of said void; and, (ii) a void-free thermoplastic skin layer affixed to the upper surface of substrate layer (a) (i).
5.
The label stock product of claim 4 wherein the void-initiating particle is an inorganic material.
6.
The label stock product of claim 4 wherein the void-initiating particle is an organic material.
7.
The label stock product of claim 4 wherein the void-initiating particle is a polymer