Mackwell met with Techsil to discuss options for the project, which involved sealing a clear plastic lens in an emergency luminaire housing.

After several in-house trials for the project, Techsil prescribed Momentive’s Snapsil TN3005-C, a clear one-part, low volatile siloxane, thixotropic silicone sealant with a fast tack-free time. Bonded units also were sent away for testing and passed with ease.

Techsil also liaised with Mackwell’s engineering department for a dispensing system and eventually opted for Nordson Performus III, an operator-controlled benchtop system that is used with an electric foot pedal.

“The Performus dispenser can handle all assembly fluids; with fast, controlled application it can make dots, beads and fills,” Techsil says in a statement, adding: “Mackwell now have this system in operation and will adapt it further to complete a variety of other in-house bonding applications.

“This dispensing system has increased throughput, improved yields and reduced production costs overall.

“Snapsil TN3005-C has proved to be a high performance material that stood up to rigorous testing and will last for the life of the product. Being a one-part material there is no mixing and no primer needed, making it very easy to use.”

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