Heat Shrink Film with Increased Tear Strength.

Abstract

This invention is related to film wrapping bundles of articles or articles with heat shrink film by providing a film having folded edges to increase tear resistance.

1 . A process for increasing the tear resistance of a heat shrunk film wrapped around an bundle comprising,
 providing a heat shrink film with folded edges,   film wrapping the bundle with the heat shrink film having folded edges, and   heat shrinking the film wrapping the bundle.   
     
     
         2 . A process according to  claim 1  wherein the folded edges are treated to maintain the fold in its proper position. 
     
     
         3 . A process according to  claim 1  wherein a heat shrink tunnel heat shrinks the film. 
     
     
         4 . A product produced by the process of  claim 1 . 
     
     
         5 . A bundle comprising
 a heat shrunk film having folded edges wrapped around the bundle, and openings in the film on opposite sides of the bundle where the edges of opening are folded thereby increasing the tear resistance when manually gripping the folded film to lift the bundle.   
     
     
         6 . An apparatus for increasing the tear resistance of heat shrunk film wrapped around bundle comprising,
 means for forming a heat shrink film with folded edges, means for film wrapping the bundle with the heat shrink film having folded edges, and means for heat shrinking the film wrapping the bundle.   
     
     
         7 . An apparatus according to  claim 6  wherein the folded edges are treated to maintain the fold in its proper position. 
     
     
         8 . An apparatus according to  claim 6  wherein a heat shrink tunnel heat shrinks the film.