Quote:
Originally Posted by Kansas Bill
The way they get colors in the plastic injection process.. (in my experience).. is merely the color of pellets and how many they drop in to the mix with the clear/white pellets.. You can have pretty much any color you want. This is why you get different shades on different runs... different color to clear/white mixtures.
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yes, but with some injection molded polyethylenes, and maybe even some polystyrenes, after the plastic cures, the cell structure of the plastic's surface is "closed tight". the open flame opens up the cell structure allowing it to accept paint. it may work for glue as well, i'm not sure.