3M gets the call to deliver enhanced bonding for telephone manufacturer
2 December 2010
An innovative combination of industrial tapes and adhesives from diversified technology company 3M is helping to deliver greater durability and product life for a leading specialist manufacturer of commercial telephones.
Based in Lichfield, Staffordshire, RS Coatings Ltd manufactures the enclosure sets for sophisticated communications interface devices. Around 300 enclosure sets are supplied each day to an electronic service manufacturer which installs all the internal components. The finished product is then supplied to a telecommunications provider for sale primarily to stock exchanges and brokers worldwide.
The enclosures differ from standard telephones in that the front cover features a number of transparent polycarbonate display windows, for LCD text display screens. Historically, the bonding between front cover and windows was achieved with the use of adhesive tape strips, combining a number of widths to fit various contact areas. This operation was labour intensive and operator-dependent, as the adhesive strips were cut to the desired length and applied manually.
In order to improve its operations, RS Coatings Technical Department approached the Industrial Adhesives and Tapes team at 3M who recommended an alternative solution based around die cut profiles of 3M High Performance Double Coated Tape 9087.
This product features an adhesive with a PVC carrier offering high peel and shear strength, excellent resistance to UV light, and good solvent and plasticiser resistance.
RS Coatings designed a range of die cut forms around the product lay-out. This more user friendly bonding method increased the contact surface area between windows and front covers, optimising the adhesive’s performance. With this philosophy in mind and in order to maximise adhesion between components, a further bonding upgrade was suggested by 3M, coupling the die-cut tape with 3M Scotch-Weld Acrylic Adhesive DP807. This is a two-part MMA acrylic-based adhesive which reaches handling strength in 15 minutes, with high overlap shear and peel strength offering excellent durability on most plastic surfaces.
The combination of these two adhesive products has delivered excellent results with zero failures in-service to date.
RS Coatings Ltd Managing Director Laurie Richardson commented: “3M’s response to the reported problem was very professional, offering alternative solutions and product samples promptly. Overall the bonding system now in place more than meets expectations. The die cut tape enables a quicker and easier application while reducing waste, and the use of an adhesive in tandem with the tape is creating a far stronger bond.”
“Currently the products are being applied manually, but we are looking at automating the adhesive application process.”
Rob Musgrove of 3M’s Industrial Adhesives & Tapes Division added: “This application shows the versatility of 3M products and how they can work together to create the perfect bonding solution – whether applied manually or automatically.”
To learn more about RS Coatings, their products and services please visit www.RSCoatings.com.
Further information on the Scotch-Weld range of tapes and adhesives can be found at www.3m.co.uk/engineeringadhesives. For details on other 3M Industrial Adhesives & Tapes products, visit www.3M.co.uk/adhesives.
3M and Scotch-Weld are trademarks of 3M Company.