With welded rule joints Marbach offers its customers a solution for the best die-cutting results – even for challenging materials.
When cutting very thick material or material with fabric, conventional tools often reach their limits. The same counts for die-cutting plastic material, as it is the case with thermoforming tools with steel-rule technology. Because rule joints can open up through the enormous load at spots where different cutting rules meet. If this happened it would create a huge nick in the blank. As a result, not only the visual appearance of the packaging and its functionality would be affected, but also the production process itself. For this reason it is necessary to truly unite the rule joints for those challenging materials.Different methods can be used: Laser, TIG or punctual welding. Marbach offers laser welding upon special request by customers or for strongly carbonaceous materials.
The laser welding process reaches its limits quickly with conventional standard steel. For this reason Marbach uses a special TIG welding process. Uwe Murrweiss, production manager at Marbach: “Our analysis of different materials has revealed that the TIG welding process provides significantly greater stability and flexibility for rule joints of standard steel than conventional laser welding. That’s why we mostly weld rule joints with the WIG procedure. In this way, we achieve very fine welds with low energy input. During this special welding process less heat occurs than through conventional welding. So the structure of the cutting rule’s edge only changes minimally with TIG welding. This results in identical rule heights and hardnesses on both connection points. The rules are therefore not only being connected optimally but also the rule joint is on one level. The material can be cut neatly.”
Special machine equipment as well as relevant know-how is necessary for this kind of welding. Marbach has both. And prefers the TIG technology, as do the customers. Murrweiss: “Our customers insist on this kind of rule joints because like this they can achieve the optimal cutting result.”
Marbach is already involved in its planning for the most important international trade fair for the printing industry: drupa 2020. And now there is only 1 year left until drupa opens its doors again. The last drupa was very special for Marbach: with the number of visitors reaching record levels. No previous drupa had more visitors at the Marbach stand than in 2016.
Marbach has continuously expanded its services in the past year. The newest member of the Marbach service family is the Marbach Performance Boost package. By which, Marbach supports its consulting service which makes its own process know-how available to its customers and thereby significantly increasing their productivity during the die-cutting process.
Marbach has been using for some time now a new rubber for rubbering cutting-dies. The name of this high-performance material is flexpower. Certified by ISEGA for use in the food industry, this rubber offers numerous advantages to operators. Marbach uses flexpower in corrugated board tools (both flat and rotary) and also sells it as raw material.
Marbach is one of the large material suppliers in Germany. Under the name Marbach Die Supplies, Marbach offers materials for packaging manufacturers that meet the requirements in the field of die-cutting. In order to support its customers even more in increasing their performance, Marbach has expanded its material portfolio.