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Many thanks again Chris. I've emailed you directly on this matter. JB

Thanks for the extra info. The moulded parts where I need to block VIS&IR (typically 400-1100nm), are housings for lighting control sensors. One of the components, an ambient light detector, is sensitive to wavelengths outside of the visible spectrum which we need to block. Also visible light...

Thanks for the info Chris. I'm unaware of how to specify these blocking pigments, apart from wavelength range and percentage attenuation and this seems of no help to our moulders. Does your contact have these pigments produced specifically for his own requirements or are they commercially...

Many thanks for the fast response. Our problem is that we need white coloured ABS and/or PC. Wouldn't the carbon black darken the colour appearance or is the amount required to block IR so small as not to affect colour? We can indeed use black polymers for some parts, but some visible parts will...

I am having major trouble finding IR transmission data for polymers commonly used in injection mouldings. We require an ABS or Polycarbonate matl which not only blocks visible light (~400-700nm) but also effectively blocks all transmission from 700nm>1300nm too. Are there any resources...