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, and 
 wherein the film is configured to be used as a sheet in a machine direction labeling system. 
 
   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 the polymeric film comprises at least one polymer selected from the group of polymers consisting of cyclic olefinic polymers, cyclic olefinic copolymers and   combinations thereof; and   wherein the amount of the polymers is less than 40%.   
     
     
         3 . The method of  claim 1 :
 wherein the film comprises polystyrene.   
     
     
         4 . The method of  claim 3 :
 wherein the film further comprises polyethylene.