Device for embossing packaging material with a set of embossing rollers of the male-female die type

摘要

The embossing device for embossing packaging material comprises a set of embossing rollers with male die and female die rollers co-operating with one another, the surface of which is provided with texture elements, wherein the texture elements (M6R6) on the surface of the female die roller (M6), which are assigned to the texture elements (P6E6) on the surface of the male die roller (P6) are not inversely congruent by an amount of above 15 μm in axial and radial direction and the texture elements of the male die and female roller associated with one another comprise facets (F) for the purpose of local pressure elevation. A facet (F) comprises faces (FN), which with respect to the imaginary, continuous surface of the texture is inclined. With such facetted rollers, a very large variety of films can be embossed in an aesthetically appealing manner, wherein the films can be mainly employed in the tobacco and foodstuff industry.

主权项

1. An embossing device for embossing packaging material comprising:
a set of embossing rollers including a male die roller and a female die roller co-operating with each other, a surface of the male die roller having texture elements, and a surface of the female die roller having texture elements, wherein the texture elements of the female die roller and the texture elements of the male die roller that are associated to the texture elements of the female die roller, include intended deviations so that a texture element of the female die roller and an associated texture element of the male die roller are not inversely congruent, the intended deviations include,
an angular deviation between a side of the texture element of the female die roller and an associated side of the texture element of the male die roller being up to 20°, anda linear deviation between the texture element of the female die roller and an associated texture element of the male die roller being above 15 μm in an axial and a radial direction, and wherein the texture elements of the male die roller, which are assigned to the texture elements of the female die roller, have facets configured to increase a local pressure.