| 摘要 |
A sealing unit (8) comprises a sealing plate (11) with heated active surface and back plate (9), die cutting unit (16) with die cutting knife (15), and counter plate for making die cuts at selected locations in the planar substrate material in the region of the applied plastic foil. The sealing plate has set(s) of raised and depressed regions on its active surface. - A sealing unit comprises a sealing plate with heated active surface and back plate, die cutting unit with die cutting knife, and counter plate for making die cuts at selected locations in the planar substrate material (1) in the region of the applied plastic foil (7). The sealing plate generates heat and pressure to the substrate material during the sealing process. It has set(s) of raised regions (14) and depressed regions (13) on its active surface facing the back plate and the location of the depressed regions in the sealing plate corresponds to the location of the die cutting knife, so that cut is made at the selected positions in the substrate material where, because of the depressed regions of the sealing plate, there is reduced heating of the substrate material and associated laminations. |
