At its site in Weinfelden, Switzerland, Model AG runs an integrated paper and packaging production facility - where time and time again it is awarded for its innovative display and packaging solutions. The company is gradually converting its compressed air generation to oil-free, speed-regulated screw compressors and, in doing so, places a great deal of importance on the efficiency and reliability of supply.
From recycled paper, to high-quality corrugated cardboard, through to ready printed and assembled packaging with an innovative, promotional design: at its headquarters in Weinfelden, Switzerland, the Model Group covers the entire process chain of packaging production. This calls for an extensive range of machines and systems.
The question as to where compressed air is used in these processes is rather easy to answer explains Ernst Herzog, Technical Manager at Model AG: "They can be found any time, anywhere. We can't produce any products without compressed air." In paper systems and the corrugated cardboard system, numerous control valves are installed which are virtually all controlled pneumatically. In addition to this, process steps are involved such as blowing or feeding the paper through the dryer section, where compressed air comes into direct contact with the paper or corrugated cardboard as a process medium. What's more, the cameras and image-processing systems of the production-integrated quality assurance system are cooled using vortex nozzles, i. e. with compressed air.
In packaging production, a wide variety of pneumatic components and actuators are also used. Here, grippers, cylinders, and compressed air-operated handling units dominate the field.
In paper systems and the corrugated cardboard system, numerous control valves are installed which are virtually all controlled pneumatically. In addition to this, process steps are involved such as blowing or feeding the paper through the dryer section, where compressed air comes into direct contact with the paper or corrugated cardboard as a process medium.
Ernst Herzog, Technical Manager at Model AG
Alongside the efficiency of the compressed air supply and the compressed air quality, supply reliability is paramount for Model AG. Ernst Herzog: "Availability is the name of the game for us." With this in mind, we have also set up a maintenance plan. The operations technicians and CompAir Service hold a monthly telephone conversation: "A conversation is more effective than an electronic report or data transfer, as the discussion can be more in depth." If a wearing part is required, it is readily available as CompAir has set up an on-site spare parts store. Furthermore, maintenance personnel and managers in the energy control room are trained by CompAir.
For its paper factory in Weinfelden, Switzerland, Model AG has implemented a certified energy management system in accordance with ISO 50001: 2011 and is therefore obligated to continually optimise all production systems in terms of energy consumption. The managers take this task rather seriously - even during the planning phase and during operation of the compressed air supply. Not least because the investment in the new oil-free screw compressors was funded by the Swiss "Pro EDA" program (energy-efficient compressed air system program).