TRANSPARENT PACKING FILM AND MANUFACTURE THEREOF

摘要

PURPOSE:To obtain a packing film certainly having high slip properties and blocking resistance while keeping transparency by forming many specific protrusions to the surface of the transparent heat-sealable layer not containing a slip agent and a blocking inhibitor provided to a transparent base layer. CONSTITUTION:Many protrusions 3 having height of 0.2-30mum and a plane area of 300-200000mum<2> are formed to the surface of the transparent heat-sealable layer not containing a slip agent and a blocking inhibitor provided to a transparent base layer 1 in a protrusion occupying ratio of 0.4-50%. A transparent packing film is prepared by applying said transparent heat-sealable layer 2 to the transparent base layer 1 by melt extrusion coating and bringing the heat-sealable layer 2 into contact with a cooling roll 5 having many recessed parts 4 having depth of 0.2-50mum and a plane area of 300-200000mum<2> formed to the peripheral surface thereof in a recessed part occupying ratio of 0.4-50%.