Canadian Plastics

Color Considerations

Getting consistent, repeatable color isn't magic, but a few simple tricks can track down trouble before you're in the red: Check your standards. Are you matching from a sample part, plaque, or writte...

June 1, 1999   Canadian Plastics



Getting consistent, repeatable color isn’t magic, but a few simple tricks can track down trouble before you’re in the red:

Check your standards. Are you matching from a sample part, plaque, or written specifications? Treat standards like the family jewels, and work with the customer to define exactly what defines an out-of-control condition, and do it early in the relationship.

Define a mutually agreeable testing process. Whether it’s a simple light booth, spectrophotometry, or an outside lab, eventually the troubleshooting process will call test procedures into question. Make them ironclad now, and save valuable downtime later.

Know what your equipment can do. Can your weigh blender accurately meter concentrates with super high let-down ratios? Is the base resin really dry? Will screw and barrel wear compromise distribution or dispersion? Remember, the literature product performance specifications are not always based on your equipment.

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Talk to your color supplier. Even if you’re using “universal” concentrates and stock colors, color houses are a wealth of information, especially for smaller processors who can’t afford dedicated personnel. Remember, you’re purchasing more than just pigment; your buying the expertise of your supplier as well.


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