White, Conformable Films for Pressure-Sensitive-Labeling Applications

A squeezable, white polypropylene film is disclosed having a novel balance of conformability, stiffness, modulus, opacity, and whiteness. The film comprises an ABCBA structure having a core layer of polypropylene resin with an elastomeric copolymer and a cavitating agent. Two intermediate layers of...

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Bibliographische Detailangaben
Hauptverfasser:	Cleckner, Michael D, Ambroise, Benoît, Hinman, Daniel L, Sheppard, Robert M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	A squeezable, white polypropylene film is disclosed having a novel balance of conformability, stiffness, modulus, opacity, and whiteness. The film comprises an ABCBA structure having a core layer of polypropylene resin with an elastomeric copolymer and a cavitating agent. Two intermediate layers of polyproplene resin are present on either side, the intermediate layers optionally comprising an elastomeric copolymer and a pigmenting agent. Two polymer skin layers surround the two intermediate layers. The resins are co-extruded into a biaxially oriented film having a thickness between 40 to 70 μm for use in pressure-sensitive labeling applications.