Sumitomo (SHI) Demag is to demonstrate the company’s technical liquid silicone elastomer (LSR) technologies at the upcoming K Show 2019.
The K fair will be held 16-23 October at Messe Dusseldorf.
Specifically, the moulding machine manufacturer will show production of components featuring a light matrix construction produced using a specially-configured IntElect 130 machine.
The IntElect 130 offers superior performance with an ‘outstanding environmental footprint’. The hardware is said to use 20% less energy that competing machines, without any compromise to overall productivity.
These features are supported by the machine’s drive system, which is geared towards top dynamics, precision and repeatability. The new motor is shorter and also features new spindle types.
New versions of the IntElect range offer precise shot control and the ability to process low-viscosity material. Units feature a specially-designed screw, ranging in size from 14mm to 45mm.
Other features include a modified plasticising unit, a shut-off system specially designed for processing LSR, and a spring-loaded, non-return valve to support the highest processing consistency.
Speaking about LSR functionality, Thomas Kottler, project manager for LSR at Sumitomo (SHI) Demag said: “LSR is a fairly unique material in that it remains flexible and elastic down to -50°C, while it also retains its properties up to 200°C.
“As a result, LSR is starting to be used more extensively in encapsulated electronic components, cables, etc., where insulation is required for user safety.”
Other applications which can benefit from LSR properties include automotive electronic components, such as headlights, seals and engine components. It supports the moulding of complex optical surfaces onto a light guide for a production of matrix headlights.
While LSR mouldings, particularly those using micro-structured surfaces, can cause material flashing, this is reduced by using an integrated and controlled vacuum system with the IntElect machines. This helps to prevent burn marks or air bubbles.
Additionally, a ‘robust’ linear guide system for the platen opening and closing sequence, with a built-in staged clamp force, can also reduce the risk of flash.