| 摘要 |
<p>The invention relates to a plastic bag (1) with at least two walls (2, 3) which are connected by seams (4, 12) and which are made of a polyethylene monofilm or a layered film with a polyethylene layer on the inner face of the bag (1). The inner face is modified by a corona treatment or a similar printing pretreatment of the surface in order to improve the printability. The bag is designed to be usable with respect to the problematic heat sealability of printing-pretreated polyethylene surfaces to one another for the purpose of a machine-adapted processing with quick work cycles, such as the processing which is already used for unpretreated surfaces, by forming at least one seam between the pressure-pretreated inner faces of the walls (2, 3) as a sealing seam (12) with an intermediate layer (14) as a film made of a polyolefin which is not modified in the surface and the melting point of which does not lie above the melting point of the film of the plastic bag.</p> |
