Transparent polypropylene film for candy twist wrapping
AssigneeHoechst Aktiengesellschaft
InventorsGuenther Crass, Lothar Bothe
Life of this patent
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Abstract
A transparent propylene polymer film, produced by coextrusion and coated on one or both sides, for candy twist wrapping, wherein the propylene polymer base layer additionally contains a low molecular hydrocarbon resin in an amount of 10 to 40% by weight, based on the total weight of propylene polymer and resin, the base layer has a modulus of elasticity of not less than 3,000 N/mm.sup.2, measured in both directions of molecular orientation, and each top layer contains a polydialkylsiloxane in an amount of 0.3 to 1.5% by weight, based on the weight of the top layer.
Claims29
A transparent stretch oriented polymer film, comprising:
- a base layer of a propylene polymer containing a low molecular weight hydrocarbon resin in an amount from about 10 to 40% by weight, calculated on the total weight of said base layer;
- and
- at least one polyolefinic top layer situated on said base layer and containing a polydialkylsiloxane in an amount of about 0.3 to 1.5% by weight calculated on total weight of said cover layer,
- wherein said base layer has a modulus of elasticity of not less than about 3,000N/mm.sup.2 as measured in both directions of orientation.
A twist wrapper for small goods, comprising:
- a base layer of a propylene polymer containing a low molecular weight hydrocarbon resin in an amount from about 10 to 40% by weight, calculated on the total weight of said base layer;
- and
- at least one polyolefinic top layer situated on said base layer and containing a polydialkylsiloxane in an amount of about 0.3 to 1.5% by weight calculated on total weight of said cover layer,
- wherein said base layer has a modulus of elasticity of not less than about 3,000N/mm.sup.2 as measured in both directions of orientation.
Dependencies are inferred from the claim text.