Gundlach: Sustainable production with BST object sensor CLS CAM 100

Bielefeld, September 2022 - At its headquarters in Oerlinghausen, the Gundlach Packaging Group produces folding boxes for food products from fiber-based materials using gravure, flexographic and offset printing. In order to use machines and resources efficiently, the company has so far already relied on the CLS PRO 600 contrast and line sensor from BST on its slitters, which performs stable and precise guiding according to web and print edges or printed lines. In the first step, a system was expanded there with the CLS CAM 100 object sensor from BST, which can also be used to guide according to objects and motifs directly in the printed image. The goal: to save the control line and thus waste - about five millimeters of web width.

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The BST sensor is used on the slitter and ensures that the material is precisely fed to the cutting process and matches the print image. Axel Baake, Head of Quality and Innovation at Gundlach, explains the decision in favor of the supplementary sensor as follows: "Our company is committed to consistent sustainability. Every investment decision is made with a view to economic success now and in the future. In line with this maxim, Gundlach produces resource-saving and recyclable packaging in order to make an active contribution to CO2 reduction."


Art guiding

The particular challenge in the production process of cell-based packaging is the spatial change of the material due to external influences such as temperature or humidity. In this context, BST's CLS CAM 100 camera-based sensor brings another advantage: since it can guide the web directly according to objects or motifs in the center of the web, the influence of web width variation is minimized. By doing so, the BST sensor ensures process reliability and the optimum quality of the end product.


Effective compensation of web width

"The CLS CAM 100 enables maximum flexibility, as guiding according to the web edge or a control line is still possible. However, the main advantage of guiding according to objects is obvious," summarizes Ingo Ellerbrock, Head of Product Management at BST. "The control line can be saved without having to compromise on guiding accuracy." Thus, he says, the CLS CAM 100 is the perfect product for Gundlach's plans because the sensor measurably saves material and thus CO2. " According to our company values, we want to avoid waste. Reducing waste by five millimeters at the web edges gives us material savings of up to 1%, depending on the web width," says Baake.


Fast commissioning via plug and play

The installation of the sensor posed no challenge for the packaging specialist because it can be put into operation on the installation side via plug-and-play. "The retrofit succeeded routinely and without long machine downtimes - an advantage of all BST systems, which is why we have been using them for decades with the best results. They run stably and are easy to operate," says Baake. Cooperation, support and training run to the advantage of both companies thanks to business relationships based on partnership.

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