Sensor sees through transparent label problems
A
Contrinex UK product story
Edited by the Engineeringtalk editorial team
Nov 29, 2004
A new capacitive label sensor claims to provide a solution to the problem of applying transparent labels to cartons and bottles.
A new Contrinex capacitive label sensor is claimed to provide a solution to the problem of applying transparent labels to cartons and bottles.
Many packaging companies are now using a combination of translucent and transparent labels to produce a more attractive product and it is vital that the position of the leading edge of a label is clearly defined in order to position it accurately on the container.
Conventional photoelectric fork sensors are still widely used for many applications and are ideal for opaque labels but they are not suitable for transparent labels, especially those with transparent backing.
The use of capacitive technology in the new Contrinex label sensor means that accurate and reliable positioning is ensured even with the thinnest transparent labels.
The sensor can also detect adhesive joints, backing strip tears and double sheet feed errors claimed the company.
The sensor is available in a one-piece, compact, nickel-plated aluminium housing with a four-pin M8 plug facility.
Sensitivity is set by means of a two-stage teach-in and the process self-optimises setting adjustments for problem free detection of even the clearest labels, irrespective of shape or size.
The sensor's static operating principle and high switching frequency permit very low to very high strip speeds and having a fast response time, it is claimed to be able to manage material speeds of 500m/min and inter-space gaps as short as 2mm.
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