Subject:
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Re: Color Change - Final Update
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Newsgroups:
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lugnet.general, lugnet.lego
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Date:
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Thu, 6 May 2004 02:52:09 GMT
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Viewed:
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10080 times
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In lugnet.general, Jan-Albert van Ree wrote:
> You can't simply "mix" ABS like that.
Yes you can. It's done all the time. Any color of ABS can be easily recycled
into black, because the carbon used to color it will overpower any other dyes.
Other colors are entirely dependant upon what you want to recycle them into.
You can't recycle blue into red, but you can recycle many shades of red and/or
yellow into many shades of orange. The key is that you need to know exactly
what color you're starting with, how much you've got of that color, and exactly
which color you're going to produce (and you need to know that anyways). Once
you know all of that, you can figure out what color/quantity you need to mix
into the off-color to make it look like the color you want. We've spent quite a
while discussing the merits of having FDA White ABS reground into OSHA Yellow or
black, because you can't regrind any post-consumer plastic into FDA-approved
plastic, and we don't use any non-FDA white plastic.
> The colors will never blend 100% and you'll get swirling patterns such as
> McDonalds "Flurry" icecreams :)
As long as your regrind chunks and new pellets are thoroughly mixed by the time
they're dumped in the hopper, everything between that point and the output point
should provide more than enough opportunity for a true color to come out the
other end.
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Message has 2 Replies:
 | | Re: Color Change - Final Update
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| What colors do you grind up and mix to get Purple Dave? :D "Purple Dave" <purpledave@maskofdestiny.com> wrote in message news:Hx9uMx.15LG@lugnet.com... (...) recycled (...) dyes. (...) into. (...) and/or (...) exactly (...) exactly (...) Once (...) (...) (20 years ago, 6-May-04, to lugnet.general, lugnet.lego)
| | | Re: Color Change - Final Update
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| (...) Wow.... I've been an intern for 4 months at a Dutch injection moulding company but I never knew it was possible, apart from the black (as has been done for years with car bumpers and such) But unless you do this in HUGE quantities, how can you (...) (20 years ago, 6-May-04, to lugnet.general, lugnet.lego)
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