via Plastics Today
All plastics have additives — some obvious, some invisible
First of all, no plastic is 100% pure when it goes into the extruder. All of them have additives — some are obvious, like colorants, and some are invisible, like light stabilizers that keep the Sun’s ultraviolet rays from breaking the molecules and discoloring or weakening the plastic.
HMM — how much matters — is my favorite acronym. I squirm when I hear the words “in it,” as in “it has sugar in it” or “there’s BPA in it.” I want to scream, “How much is in it?” but usually I don’t. Often the speaker wants/needs to avoid dealing with the actual amount. Additives are prime examples: We can’t know a compound is adequately protected from sunlight degradation (UV) without knowing what the additive is, how uniformly it’s mixed, and how much of it is in it.
Read the full story here: https://www.plasticstoday.com/extrusion-film-sheet/efficient-profitable-plastics-extrusion-begins-materials-knowledge
Grand Rapids, Mich. — The automotive sector will spend $11 billion on tooling in North America this year, as automakers plan lots of vehicle launches over the next few years, consultant Laurie Harbour told the 
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