Method for detecting the transverse position of a packing material, in particular a film wrapping

Abstract

The invention relates to a method for detecting the transverse position of at least one sealing section (1, 2) on a packaging material (4), in particular a film wrapping, and / or the transverse position of the packaging material (4), wherein the packaging material (4) is displaced along a running direction (L), wherein the transverse position of the at least one sealing section (1, 2) or the packaging material (4) relative to the running direction (L) is detected by means of at least one sensor unit (5). The packaging material (4) comprises at least one cursor (7) by means of which the transverse position of the at least one sealing section (1, 2) or the packaging material (4) transverse to the running direction (L) is detected, wherein the shape of the cursor (7) changes with respect to a direction running in particular transverse to or at an angle to the running direction (L), wherein said change is detected by the sensor unit (5) and the transverse position of the packaging material (4) or the at least one sealing section (1, 2) is determined by means of the change.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 for detecting the lateral position of at least one sealing section on a packaging material, in particular a film packaging, and / or the lateral position of the packaging material itself and a A device according to the preamble of claim 9. Background technique [0002] Tube packaging is usually provided by a continuous film, wherein the continuous film is formed into a tube around the product to be packaged and closed by means of one longitudinal sealing seal and two transverse sealing seals. [0003] From the prior art, both vertical and horizontal tube bag machines are known. [0004] The two longitudinal side edges or edge regions of the continuous film are connected to the longitudinal sealing seal when the film is formed into a tube. The film inner sides of the longitudinal side edges are merged and connected by suitable sealing methods to form a so-called fin seal (Fin seal). ...

AI Technical Summary

Problems solved by technology

Measuring with sensors is difficult and unreliable especially in the case of transparent films

[0008] Another disadvantage arises because there may be a distance of several meters between the measuring position and the actual sealing, and therefore it is not possible to check for later possible film displacements between the measuring and sealing position

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