Exciting things are happening at Williams Plastics

We are joining forces with Indiana Plastics to become Impact Molding. As a Thunderbird company dedicated to excellence, teamwork, and innovation, we offer enhanced capabilities and capacity to better serve you. Soon, we’ll have an updated website that communicates the combined value and services Impact Molding provides.
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Williams Plastics, based in Shelbyville, Indiana, has traditionally been a provider of plastic injected molded drinkware and custom art services to various customers. With seven decades of experience, we are an industry leader in supplying services to the food and beverage, automotive, industrial, drinkware, and consumer products realms. With approximately 150,000 sq. ft., we are your one stop shop for plastic injection molding and custom designed digital printing.

Williams Plastics is ISO 9001:2015 Certified for Plastic Injection Molding and Digital Printing. Also, adheres to UL Compliance for Component - Fabricated Parts, per UL QMMY2 standards.



  • Automotive
  • Consumer Products
  • Drinkware
  • Food & Beverage
  • Industrial
  • Medical



Injection Molding

Plastic Injection Molding produces high quality, high volume parts by injecting plastic particles into a mold under pressure. The process is quick and creates parts exactly shaped to the mold used with high repeatability.

Digital Printing

Our Vutek printer, a Hybrid device, has the versatility to digitally print both flatbed (sheets) and roll to roll imprints, producing state of the art digital prints on individual substrates. Our Epsons and Rolands are Roll to Roll printer which print digitally on materials that are fed from one roll to another and are typically used for pressure sensitive decal stock.


A wide variety of Customizable Drinkware Products for every use. Tumblers, Coffee Mugs, Stadium Cups and assorted other products for all occasions.