The "Multi-Line" in Turbenthal enables the coating of workpieces with dimensions from 900 x 250 to 3,050 x 1,300 millimetres and a thickness of 10 to 105 millimetres. The line is designed for a maximum panel weight of 215 kilograms. Workpieces with a width of 600 to a maximum of 1,300 millimetres and a length of 1,500 to 3,050 millimetres can be fed and stacked automatically. Smaller workpieces are placed manually and removed again after coating. The "Multi-Line" in Turbenthal achieves a cycle output of around two and a half cycles per minute, depending on the optimum processing temperature of the hot melt adhesive used.
In Turbenthal, a PUR HOTMELT adhesive is used that is water and heat resistant and cannot be reactivated after processing. This means that once bonded, components can no longer be separated. Cleaning the hot melt adhesive application machine at the end of a production day takes around 15 to 20 minutes due to the special design to ensure consistent quality and service life of the application roller.
Another strength of the PUR coating in Turbenthal is that different materials can be applied to the door blanks. For example, plastic coatings can be applied on one side and different surface materials on the other, which are bonded together by the pressure of the calender roller alone.
The "Multi-Line" is designed so that it can be operated by a single machine operator who monitors the feeding and removal of the raw stacks and surface materials. Machine operators are trained during installation and commissioning to understand and operate the machine in the best possible way right from the start.
Each coating line is a customized solution, adapted to the customer's needs. Details such as the requirements for the surface finish or special requirements for the end products determine the design of the system.
The coating line in Turbenthal has been in operation for over a year and has proven to be extremely reliable. The "Multi-Line" enables the company to produce more efficiently, shorten delivery times and increase the quality of the doors, says Steffen Denker from Bürkle.