Ultrasound systems - processing plastics - Import export

Based on a long tradition of ultrasonic processing KLN Ultraschall AG also today develops and builds edge-welding machines for textile back injection molded parts. Here in very complex fixtures the textile overlap is put around the part and fixed by means of special sliding technology. This is a highly complex task and requires sound experience in construction and optimisation of the assembly. Here the important know-how is the tool design and not the machine technology. After “edge folding” the stretched textile overlap is permanently bonded with the plastic by means of ultrasonic technology or permanently heated elements on the back of the plastic part.

In the last few years KLN has enlarged their hot plate welding machine program „TOOLMASTER“ and their vibration welding machine program “LVW” by the infrared welding program. The KLN machine program of „pure“ IR welding is based on the hot plate machine program „TOOLMASTER”. Machines for infrared heating should be equipped with servomotor drives in order to guarantee simple, quick and exact positioning. For welding by means of infrared technology short-wave (0,78-2 μm) as well as medium-wave (2-4 μm) infrared radiation of the spectrum can be used. This depends particularly on the radiation absorption capacity of the respective polymer material. The more precisely the radiator is adapted to the absorption capacity of the polymer material, the higher is the degree of efficiency, that means the conversion into warmth. Short waves are absorbed in deeper layers of the material, whereas medium waves heat it up more at the surface.

For the assembly of plastic parts, which differ in size and condition and would therefore not be suitable for standard machines, we recommend the use of special equipment with several ultrasonic units for ultrasonic welding and processing methods. • Riveting • Welding • spot welding • punching • flanging • cutting • embossing • printing Multi-head systems These machines can also be used to accomplish complex tasks, e.g. the combination of different welding techniques, like spin welding and hotplate welding and for numerous automated processes

KLN develops and manufactures punching machines with precise curve design at the surface, for example to punch holes for the distance sensor holders or lamps in lacquered bumpers. Realisation of high-precision round or angled holes, but protection of the part; also suitable for already lacquered surfaces.

Thermal edge folding is a process for connection of textiles with plastics. It is often used in the automotive industry in the field of pillar panelling (e.g. A-column; B-column; C-column, etc.). This process does not create an adhesively joined connection, but the basic textile fibres grip into the melted plastic material.

The Ultrasound washing machine cleans and degreases plastic materials or acetate in general or small pieces in metal in water and/or cleanser. The cleaning action in a ultrasound washing machine is due to the vibration and cavitations produced by high frequency sound waves. They are not the ultrasound that clean the object surfaces but the fine cavitations and important molecular vibration. According to the Company’s Philosophy, only high quality materials are used. Production is respectful of security norms and the machine is completely made in stainless steel. For a better control of the process, the machine is equipped with: – Ultrasound transducers situated on the bottom or on the inside – Liquid Heating controlled by a thermostat – Power regulation – soundproofing and insulation – tank for rinsing by immersion with spray controlled by pedal – top to close tanks