| 摘要 |
<p>The method for producing a plastic film (1) for packing such as butt-ended bags useful as a food package for humans or animal and package for dry, damp or liquid food, comprises stamping the plastic film in longitudinal direction to receive an asymmetric groove structure (2). The groove walls are located in an angle of 90-45[deg] C to the film surface. The structure is intercepted by bars (3), which have a length of 50-1000 mu m and the portion of the bars is less than 50% of the total length of the groove structure. The distance between the grooves and/or intercepted grooves is 0.05-0.5 mm. The method for producing a plastic film (1) for packing such as butt-ended bags useful as a food package for humans or animal and package for dry, damp or liquid food, comprises stamping the plastic film in longitudinal direction to receive an asymmetric groove structure (2). The groove walls are located in an angle of 90-45[deg] C to the film surface. The structure is intercepted by bars (3), which have a length of 50-1000 mu m and the portion of the bars is less than 50% of the total length of the groove structure. The distance between the grooves and/or intercepted grooves is 0.05-0.5 mm. The asymmetrical structure on the film top side has a width of 300-500mu m and a depth of 50-300 mu m. The grooves of the plastic film are arranged on the side turned to the layers. An independent claim is included for a plastic film for packing purposes.</p> |
