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Recycled LDPE Resins - Color Characteristics

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cj811

Materials
Jan 16, 2014
4
Hi,

I would like to know more about the color properties in recycled LDPE. I want to get purchase some however I dont know how to specify the color (or an acceptable color range) and there doesnt seem common to do this which I thought strange (The optical properties are specified e.g. gloss / haze). I have seen photos from different suppliers and they vary from a clean natural color right through to a blue / black color.

What is the standard way of specifying color of repro ldpe ?

Why is some recycled LDPE clear and other dark / blue / brown colour ? But not red yellow etc.

Is the color not an important characteristic and so not normally specified?

Sorry a jumble of questions there. Any thoughts would be greatly appreciated !

Titanium engineer based in China -
 
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