| 摘要 |
FIELD: packaging industry.SUBSTANCE: invention relates to laminated packaging materials and relates to packaging. The packaging wrapper is made of a material having the inner laminated structure and the outer laminated structure, connected together. The delaminated valve is determined in the wrapper by means of offset notch lines in the laminated structures, at that the structures are connected together at a boundary region between the notch lines by means of delaminating adhesive. In one aspect of the invention the notch lines are formed using a pair of counter-rotating cylinders-stamps located on the opposite sides of the laminated film. Each cylinder is in contact with the corresponding laminated structure and has a blade to form the notch line in this structure. In another aspect, the laminated structures are connected together using the single delaminating adhesive both inside and outside the boundary region. In another aspect, the structures are connected together at least in part of a boundary region with the creation of the rising tab for the valve.EFFECT: improved design.23 cl, 12 dwg |
