The Most Common Methods For Coloring Plastics

September 23, 2024

Companies have turned to the use of plastic injection molding technology to manufacture plastic parts and products on a massive scale. Injection molding involves melting plastic before injecting it into the mold that shapes it into the desired form before cooling to produce the final product. This product may require a custom color to improve its aesthetic appeal and purchase rate. Molding companies have to add color to the raw plastic to achieve this feat. Common color plastic products include:



  • Combs and brushes for babies
  • Forks and spoons for toddlers
  • Cups
  • Plates
  • Plastic handles for various household items
  • Plastic covers

How Plastics Get Their Color

Coloring plastics isn't a matter of painting their surfaces with your preferred hue. The color may not last, or you may not achieve the best quality of the item. A more technical but effective way of introducing different colors to plastics is by introducing them in injection molding process.

Different Methods That Can Be Used

  • Compounding: This process involves premixing several colors with resin before introducing the mixture to the molding plastic.
  • Masterbatching: Colors are premixed with resin but are not introduced to the molding plastic as they are. It requires uncolored plastic or rubber to scale it down to at least 2% of the volume before it can be used.
  • Solvent Coloring: It requires the spraying of uncolored pellets with a solvent with the required pigment. Keep the ratio of the pigment to the plastic at 2% to achieve the best results.
  • Dry Pigment Mixing: The use of dry pigment powder which is mixed directly with the pellets in the injection machine. Ensure the 2% ratio before commencing the injection molding process.

Why Call Bennett Plastics?

With Bennett Plastics, you can never go wrong with your choice of colors. With a long history of injection molding and coloring, we have perfected the art of color matching to produce accurate results. If you need to make any inquiries, contact us today!

Recent Articles

The 3 Best Qualities of Successful Plastic Manufacturers : Bennett Plastics

The 3 Best Qualities of Successful Plastic Manufacturers

September 23, 2024
Many organizations that use plastic products do not necessarily manufacture them on their own. There are plastic manufacturing companies that offer production services, but don't offer a comprehensive service to create and distribute your product. Like everything in business, you need to make an informed choice when selecting a top plastic manufacturing company for your products. Your products are one of the most important aspects of your business, so deciding who to trust with them is a big decision.
4 Helpful WaysTips to Prevent Defects in Common Plastic Injections : Bennett Plastics

4 Helpful WaysTips to Prevent Defects in Common Plastic Injections

September 23, 2024
When it comes to plastic injection molding, there's room for several errors. Quality issues in plastic injection-molded items range from negligible surface defects to severe problems that affect the performance, safety, as well as function of the final product. Often times, the flaws are linked to the material used, tooling design, molding process, or a combination of all three.
5 Great Benefits of Plastic Manufacturing in the U.S. : Bennett Plastics

5 Great Benefits of Plastic Manufacturing in the U.S.

September 23, 2024
Despite living in the world's greatest nation, it has become tough to find items labeled "Made in America" in recent times. In fact, according to the Washington Post, 98% of shoes worn in the US are made abroad. Then, when you think about plastics, food items, electronics, and a surplus of items used regularly that are made overseas, you may wonder if Americans are producing anything.
SHOW MORE