Polymeric sheets and articles wrapped therewith

Abstract

A polymeric sheet having low density and comprising a low to non-existent amount of cyclic olefinic polymers (COP) and/or cyclic olefinic copolymers (COC). The overall density of the sheet may be lower than water. The sheet may be stretched and then heat shrinked onto an article. The sheet may be used as a label or package to wrap articles therewith.

1 . A method comprising:
 selecting a polymeric film roll;   wherein the polymeric film roll is configured to be used in a machine direction labeling system; and   wherein the polymeric film roll comprises:
 a polymeric film; 
 wherein the film has a density less than 1 g/cm3;
 wherein the density is calculated as follows: 
 exposing the film to a temperature of 100 degrees Celsius to shrink the film and 
 measuring the density of the film after shrinkage; 
 
 wherein the film is configured to be shrinkable in a machine direction of the film roll by at least 15% upon exposing the film to 100 degrees Celsius with a steam tunnel, 
 wherein the film is configured to be shrinkable in a transverse direction of the film roll by less than 5% upon exposing the film to 100 degrees Celsius with a steam tunnel, 
 wherein the film is configured to be used as a sheet in a machine direction labeling system, and 
 wherein the film is selected from the group consisting of cyclic olefinic polymer, cyclic olefinic copolymer, styrene polymer, styrene copolymer, ethylene polymer, ethylene copolymer, polypropylene polymer, polypropylene copolymer, and mixtures thereof; 
   applying the film to a bottle in a machine direction labeling system; and   shrinking the film applied to the bottle in the machine direction labeling system in a steam tunnel to form a shrink-wrapped bottle.   
     
     
         2 . The method of  claim 1 :
 wherein a total amount of the cyclic olefinic polymer, the cyclic olefinic copolymer and the mixtures thereof is less than 40%.   
     
     
         3 . The method of  claim 1 :
 wherein the film includes the styrene polymer.   
     
     
         4 . The method of  claim 1 :
 wherein the film includes the ethylene polymer.