Flexible adhesive with precision dispensing reduces production costs

4th October 2018

Nordson EFD Ultimus 1 dispenser Nordson EFD Ultimus 1 dispenser
Speed Plastics has increased the speed of its manufacturing process Speed Plastics has increased the speed of its manufacturing process

In a recent project that showcases the merits of the latest adhesives, an expert in this sector provided its customer with a flexible silicone adhesive and a fast, reliable, consistent dispensing solution for the manufacture of a smoke hood.

Speed Plastics specialises in high-frequency welding of flexible plastics and also offers customers bespoke engineering solutions in sectors such as healthcare, aviation, defence and marine. Adhesive and dispensing specialist Techsil was approached to find a transparent flexible adhesive to bond the mouthpiece of a smoke hood and plan a new method of production.

A number of adhesives had been tried but under stress tests proved too brittle for the substrates, which were silicone rubber and cotton-backed PVC. Furthermore the contours of the mouthpiece made applying the adhesive by hand very tricky. A one-part flowable silicone adhesive was recommended by Steve Green, one of Techsil’s application development engineers.

Green says: “Momentive IS5628E silicone adhesive cures at room temperature, requires no mixing and its flowable consistency makes it easy to apply. It adheres well to silicone rubbers and cures to make a tough, durable bond that can withstand very high and low temperatures. Therefore it’s an ideal solution for this application.”

For the production process, a semi-automated system was chosen. A circular, even bead of adhesive was required and a Nordson EFD Ultimus 1 dispenser with a 310 cartridge assembly was deployed and a fly press to deliver the adhesive. The hood and mouthpiece is placed on a turntable and is rotated 360° during dispense.

Excellent Results

This project has increased the speed of the manufacturing process. The Momentive IS5628E adhesive produces a sound bond that is uniform and repeatable due to the automated dispensing. In addition, adhesive wastage has been eliminated, which was an inevitability of hand application.


Previous Issues










twitter facebook linkedin © Setform Limited