Polypropylene film comprising an opening aid

Abstract

A biaxially oriented polypropylene film with at least two perforated lines is described, 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. The intervals of undamaged film between the perforations are longer than the perforations.

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 and there are intervals of undamaged film between the perforations and the intervals between the perforations are longer than the perforations themselves. 
     
     
         13 . The polypropylene film roll according to  claim 12 , wherein the intervals are at least 5% longer than 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 0.1-6 mm long. 
     
     
         18 . The polypropylene film roll according to  claim 12 , wherein the length B of the perforations is 5 to 60% of the length A of the intervals. 
     
     
         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 the perforated film roll according to  claim 12 . 
     
     
         22 . The cigarette pack produced through the use according to  claim 21 .