Polyurethane resin pumped using OEM peristaltic technology

A company that produces machines for applying distinctive resin ‘domes’ to labels is using Watson-Marlow’s OEM pumps for the dispensing process. The machines are also sold to other label producers in Europe and across the US.

Based at Ashton-Under-Lyne in Lancashire, Mockridge Doming Systems is a division of Mockridge Labels and Nameplates Ltd and, for the past five years, has been manufacturing machines for dispensing polyurethane resin on to printed and cut labels. When cured the resin provides a decorative and durable clear lens coating to the printed image, commonly referred to as a dome. When looking for a reliable and cost effective solution to pumping the resin from the delivery containers in the machines, Mockridge selected peristaltic pumps from Watson-Marlow.

“The main reason for this choice was the fact that this type of pump does not come into direct contact with the resin,” says Divisional Manager Stuart Lord, “which is important as polyurethane resin is affected by moisture and this can damage the finished product by introducing small bubbles of air into the surface of the finished dome.”

Mockridge uses two 501FAC/RL fixed speed OEM pumps on each machine for the two products that make up the curable dome (resin and hardener). The two should not be brought into contact with each other until being applied to the label. Mockridge also selected Marprene tubing, which in combination with the pump provides a closed loop delivery system.

More information about the Watson-Marlow OEM pumps range.