Polypropylene film comprising an opening aid

Abstract

A biaxially oriented polypropylene film with perforated lines is described. The film has at least two perforated lines which run parallel to one another and are located at a maximum interval of 10 mm. The perforations of the two lines are offset relative to one another.

1 - 11 . (canceled) 
     
     
         12 . A biaxially oriented polypropylene film roll, wherein the film exhibits at least two perforated lines, which run parallel to one another and are located at a maximum interval of 10 mm and wherein the perforations of the two lines are offset relative to one another. 
     
     
         13 . The polypropylene film roll according to  claim 12 , wherein there are intervals of undamaged film between the perforations and the perforations are longer than or just as long as the intervals between the perforations. 
     
     
         14 . The polypropylene film roll according to  claim 12 , wherein the perforations are made by means of a needle and are circular or elliptical or propeller-shaped. 
     
     
         15 . The polypropylene film according to  claim 12 , wherein the perforations are made by means of a knife and are rhomboid or rectangular. 
     
     
         16 . The polypropylene film roll according to  claim 12 , wherein the perforations are thin points which exhibit 10 to 80% of the remaining film thickness. 
     
     
         17 . The polypropylene film roll according to  claim 12 , wherein the perforations are 0.1-8 mm long. 
     
     
         18 . The polypropylene film roll according to  claim 12 , wherein the length of the intervals between these perforations is 10 to 95% of the length of the perforations. 
     
     
         19 . The polypropylene film roll according to  claim 12 , wherein the centre of the sections of the first perforated line is aligned with the centre of the opposite perforations in the second perforated line in each case. 
     
     
         20 . A process for packaging cylindrical or prismatic individual goods which comprises utilizing the perforated film roll according to  claim 12 . 
     
     
         21 . A cigarette pack which comprises utilizing the perforated film roll according to  claim 12 . 
     
     
         22 . The cigarette pack produced by the process according to  claim 20 .