Injection moulding process Efficient and safe: Keeping cooling channels clean

Related Vendors

Wattec GmbH

HASCO Hasenclever GmbH + Co KG

Ramada Acos

The Dreyproper system from Wattec enhances the cleaning of injection moulding tools with its fully automatic, safer and faster approach. Gardena Manufacturing, along with other companies, has found significant improvements in efficiency and ease of use with its latest 4.2 model.

Injection moulding tools are supplied with coolant to prevent overheating. Over time, the cooling channels can become clogged with limescale and corrosion, causing the injection moulding process to lose efficiency. Regular cleaning is therefore essential. As many systems only offer this semi-automatically, operators are confronted with a great deal of additional work and health risks due to the chemicals used. The fully automatic and mobile Dreyproper system from Wattec, on the other hand, offers safer and faster cleaning. With the help of a frequency-controlled pump and a compressed air connection, it injects air bubbles into the volume flow of the cleaning agent so that even stubborn limescale and sludge deposits can be removed from up to eight circuits simultaneously. Gardena Manufacturing and KWM Kunststoff-Formteile have also had very good experiences with the latest 4.2 model of the Dreyproper.

“Cooling the moulds in the injection moulding process ensures that they do not overheat and that the plastic parts solidify quickly and evenly,” says Joachim Rohmann, Managing Director of Wattec. “This prevents deformation, stresses and shrinkage and shortens cycle times.” Over time, however, they can corrode due to the continuous load and limescale, among other things, is deposited. As a result, the cross-section of the cooling channels is reduced, which reduces the flow rate and heat transfer. This leads to uneven and insufficient cooling, which deteriorates the quality of the plastic parts and increases cycle times.