Subject:
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Re: LEGO Inside Tour (New theory on color change: stock dyes)
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Newsgroups:
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lugnet.color
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Date:
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Wed, 25 Aug 2004 02:36:22 GMT
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Viewed:
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845 times
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In lugnet.color, Erik Olson wrote:
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Jake says Lego is not using “just in time” coloring in response to the rumor,
and Scott says it doesn’t make sense.. however, the technology is real:
“Chroma Injecta Color Systems Inc of Chicago Heights, Illinois, have
developed what is claimed to be a highly effective liquid colorant system for
PET and its derivatives.
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The technology may be real, but I don’t believe TLC uses any PET derived
plastics for any brick parts, though they do use them for packaging (clear
BIONICLE pods are PETE, and opaque ones are straight PET). Since the pods are
really just fancified packaging, I doubt it’s worth investing in this technology
just to make some types of packaging with slightly less degraded plastic. The
buckets are PP, and the X-Pod/Mini clamshells are again PETE (but clear, so
there’s no color additives involved anyways).
Still, it’s really neat that someone has figured out a way to do that. I
figured it would be possible, as long as you can sufficiently churn the
color/plastic mix before it hits the actual molds. I mean, they make 2-part
epoxy mixing tubes that will mix two flows of material (sometimes in an unequal
ratio) better than you can by stirring them together, and the epoxy can often
hit the other end of the tube in a fraction of a second.
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