electrical & electronic | Applications
protective covers and integrated lenses, which it selected for its high transpar- ency and low light loss. Dimen- sional accuracy is also a key requirement, as the lens has to align precisely with the LEDs on the circuit board module for optimum illumination
efficiency. This is especially important in applications such
as greenhouse lighting, where the LED package must be protected from
Above: Russia’s AtomSvet is using Makrolon PC from BMS in its latest industrial light- ing products
moisture penetration. Bayer Material Science says the high impact
resistance of the Makrolon resin is also a benefit in industrial applications in Russia, where industrial lights used in external applications must be able to withstand events such as vandalism at low ambient temperatures. US lighting company Kenall opted for Makrolon for
production of secondary and tertiary optical components in its latest range of LED luminaires developed for use in parking garages and high bay storage and warehousing applications. The company also provided mould filling analysis and technical support in developing a solution that optimised light output and transmission. “Bayer’s materials, in combination with intelligent design, efficient power electronics and state-of-the art LED sources, allow us to boast product efficacies that are among the highest in the market,” says Nathan Heiking, advanced lighting product manager at Kenall Lighting. The company is using the Bayer MaterialScience
resins in its TekDek TD17 surface-mounted design, which features sealed optics and a textured anti-glare lens, and its pole-mounted TopDek designs. Makrolon PC is also being used by US-based
Right: DSM’s
Stanyl ForTii is being used in LED array holders in
place of LCP
TerraLux in its Line-voltage Linear LED Engine, an integrated assembly of one or more LED modules, an LED driver and heat sink, designed for application in a range of LED lighting fixtures. The company currently produces the modules in three sizes - all share the same 42mm by 28mm cross section but lengths range from 100mm to 200mm. TerraLux is using a medium viscosity grade of
Makrolon – FR7087 – formulated for easy release from the mould. The grade is also flame retardant (rated UL94 5VA at 3.0mm) and UV stabilised. “Using Bayer’s plastic gave us the design freedom necessary to create one of the first truly integrated LED linear light engines that offers an IP-65 rating, is UL-listed for retrofit solutions and offers in-field durability – all while maintaining maximum light output and efficiency,” says TerraLux senior mechanical engineer Brett Pardikes.
44 INJECTION WORLD | April 2014
www.injectionworld.com DSM Engineering Plastics has developed a special
grade of its Stanyl ForTii high performance polyamide 4T for LED applications. The material is being used by an undisclosed manufacturer of interconnects to produce an integrated LED array holder, which is designed to simplify the LED installation process by using compression contacts in place of soldering. Requirements for the array holder components include the ability to withstand reflow soldering temperatures of up to 305˚C under load, resistance to cracking during assembly, and high whiteness as the reflectivity of the array holder contributes to the overall light output of the system. According to DSM, the Stanyl ForTii grade outperforms the LCP resin originally considered for the components. Benefits include reduced cracking during assembly and the ability to process on a mould originally designed for LCP. DSM offers a portfolio of polymer for LED applica- tions. Its most recent introduction is Stanyl For Tii LED LX, a mineral filled and halogen-free flame retarded grade offering high reflectivity and the ability to process in high cavitation mould tools. The company also markets thermally conductive Stanyl TC grades, which can be used in place of cast aluminium to achieve claimed system cost savings of up to 40%.
Click on the links for more information: ❙
www.luxresearchinc.com ❙
www.sabic.com ❙
www.materialscience.bayer.com ❙
www.dsmep.com
l Lux Research energy electronics analyst Pallavi Madakasira will be speaking about the future outlook for LED lighting and discussing material, cost and supply chain issues at the Injection World Molding Forum, which takes place in Philadelphia, PA, USA, on 17-18 June 2014. Find out more about the event here
http://bit.ly/IWMF2014
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