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US 2003/0143357 A1Published application
Biaxially-oriented facestock for conformable pressure-sensitive labels
OwnerLori A. Frauenhoferinventor
Life of this patent
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Abstract
An improved facestock for forming conformable pressure-sensitive labels for automated dispensing. The facestock is an extruded multilayer film structure, including a core layer formed of propylene and an ethylene-containing polyolefin. The coextruded biaxially oriented structure exhibits the squeezability and softness characteristics required for a conformable label while maintaining sufficient stiffness for automated dispensing.
Claims20
A coextraded facestock for forming conformable pressure sensitive labels suitable for automated dispensing, comprising:
- a core layer including approximately 40-80% of polypropylene and approximately 20-60% of an ethylene-containing polyolefin, said core layer having a thickness of at least about 2.15 mils;
- first and second polyolefinic skin layers adhered to opposing sides of said core layer, each of said skin layer having a thickness of less than approximately 0.1 mils;
- and
- wherein said coextruded core and skin layers are biaxially oriented such that the degree of orientation in the transverse direction exceeds the degree of orientation in the machine direction, the degree of orientation in said transverse direction ranging from about 7 to about 10 and the degree of orientation in said machine direction ranging from about 3.5 to about 6.
1 more element
A labelstock for forming conformable pressure sensitive labels, comprising:
- a) a facestock having sufficient stiffness to allow automated dispensing of labels formed therefrom, said facestock comprising:
- a core layer including approximately 40-80% of polypropylene and approximately 20-60% of an ethylene-containing polyolefin;
- first and second polyolefinic skin layers adhered to opposing sides of said core layer;
- wherein said coextruded core and skin layers are biaxially oriented such that the degree of orientation in the transverse direction exceeds the degree of orientation in the machine direction, the degree of orientation in said transverse direction ranging from about 7 to about 10 and the degree of orientation in said machine direction ranging from about 3.5 to about 6;
- and
- wherein said core layer is at least about 20 times the thickness of one of said skin layers;
- b) a pressure-sensitive adhesive applied to the outer surface of said second skin layer;
- c) a release liner covering said pressure-sensitive adhesive and adapted for removal therefrom.
5 more elements
Dependencies are inferred from the claim text.