Combined Test Solutions is the leading UK provider of test equipment and instruments. We were asked to overmould two of their test products, the first being a Smart-Light.
The Smart-Light device is a useful tool for automated and quick test set up and fixturing of large harness tester interfaces. It can store information for fixturing cables, show error location as well as saving time and money for users.
Tim Morris explains the problems experienced before using the Low Pressure Overmoulding process provided by Overmould, how this proved to be the solution and why the chosen overmoulding material was used.
“Previously, high pressure moulding was used to encapsulate the PCB, but this was not possible without an extremely high failure rate. High pressures and temperatures were destroying components in the Smart-Lights which led to multiple problems with the LEDs on the board and subsequently to 20% failures.”
“We knew we needed to find a way to improve. We worked with Overmould who enclosed the PCB’s with overmoulding.
Overmoulding is a process that ensures products are protected against demanding working conditions such as moisture, dust and dirt. The procedure also offers aesthetic benefits, allowing a finished product to be given an interesting look or make it distinctive to a brand.”
“On the Smart-Lights, quality improved with failure rate dropping to way less than 1% and the 3-stage process gave us a much better finish of the device. We were able to fully encapsulate the sensitive LED with the Technomelt Polyamide material.”
“For the choice of Low Pressure moulding material, we went with Technomelt 673 Amber as this gave the Smart-Lights the best finish. This product also gave us good visibility of the bi-coloured LED when the product is in use. We can confirm it has been a highly successful development.”
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09 February 2023Waterproofing electronics and products of all types
Moisture can cause a wide range of issues in electronics and other devices, including corrosion of metal components and damage to sensitive electronic components. This is where the Low Pressure Overmoulding process comes to hand, as it can waterproof a wide range of electronic devices including circuit boards and connectors,
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03 January 2023Overmould are the UK's No 1 Supplier of Henkel Technomelt®
Henkel is a world leader in high performance adhesive materials, and Overmould are proud to be their top distributor providing Henkel's Technomelt polyamide adhesive thermoplastics and LOCTITE® products for over 20 years. Henkel Technomelt,® used in conjunction with specialist Low Pressure Moulding equipment supplied by Overmould Ltd, offer a superior adhesion and sealing for a wide range of electronics applications enabling fast, low-cost encapsulation in any shape.
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18 October 2022Useful Guide to Low Pressure Overmoulding PCBs, Parts & Connectors
A look at the suitability of Low Pressure Overmoulding for parts, PCB's & connectors with answers to the most common questions about LPM.