METHOD FOR MANUFACTURING A SET OF EMBOSSING ROLLERS

摘要

In the method for manufacturing embossing rollers for a device for embossing packaging materials that comprises a set of at least two embossing rollers of which one is driven, and whereby the embossing roller set comprises a male roller having a male surface structure including structural elements and/or logo structures and a female roller having a female surface structure that is associated to the surface structure of the male roller for the common embossing operation with the male roller, the female surface structure is produced independently of a previously produced or physically pre-existing associated male surface structure. Along with a high embossing accuracy, this allows creating a very large variety of embossing structures, on one hand, and using a very large number of the most diverse materials, on the other hand, as well as reducing transverse tensions in the embossed material.

主权项

1. Method for manufacturing a set of embossing rollers for a device for embossing packaging materials that has two rollers,
characterized in that
the embossing roller set comprises
a male roller having a male surface structure including structural elements and/or logo structures anda female roller having a female surface structure that is associated to the surface structure of the male roller for the common embossing operation with the male roller,and is designed in view of using the embossing rollers for fine embossing in the on-line process, whereby
the associated female surface structure is produced independently of a previously produced or physically pre-existing male surface structure, contours of the male surface structures and the female surface structures are manufactured for a fine embossing process with an overall linear error of less than +/−10 μm and an angular error of less than 4°, the dimensions of the structural elements of the male roller, on one hand, and the dimensions of the associated structural elements of the female roller, on the other hand, deviate from one another by a determined amount without however impairing their cooperation, and any voluntary deviations of linear dimensions of the structural elements of the rollers from each other are greater than 15 μm and/or the angles of the edges of the structural elements deviate more than 4° from each other.