Top 9 Plastics & Packaging Manufacturers in Washington 2026

Isoflex Packaging

Vancouver, Washington

Isoflex Packaging, headquartered in Vancouver, Washington, was founded in 1985 with the goal of introducing a new approach to the film industry. The company produces specialty films for laminating, printing, coating, and converting markets.

SeaTac Packaging Manufacturing Corporation

Puyallup, Washington

SeaTac Packaging Manufacturing Corporation operates from Puyallup, Washington, in the Greater Seattle area. The company was founded in 1994 by Scott, who identified an opportunity to better serve the Pacific Northwest fishing community with an innovative PaperWoven™ product.

Seattle-Tacoma Box Co

Kent, Washington

The business traces its roots through six generations of the founding family, who have maintained ownership and operational control since the late 19th century. In 1991 the family expanded its footprint by launching SeaCa Packaging to serve Central California with graphic packaging, and in 2014 added SeaCa Plastic Packaging for sustainable polypropylene corrugated products.

American Plastic Manufacturing

Seattle, Washington

American Plastic Manufacturing operates from Seattle, Washington The company does business as American Plastic Mfg., Inc., though no founding year, ownership structure, or founder names are disclosed in the available information. The firm produces custom printed plastic bags.

Commercial Plastics Corp.

Arlington, Washington

Commercial Plastics Corp. operates from Arlington, Washington, where it has served the plastic fabrication market for over three decades.

Rex Plastics operates from Vancouver, Washington, where it has been manufacturing plastic injection molded parts since 1971. The company is a second-generation, family-owned and operated contract manufacturer that began with a focus on domestic mold building and material sourcing.

Total Plastics, Int'l was founded in 1978 by John Kozacki and Jerome Kollig in Kalamazoo, Michigan. The company began as a plastics warehouse and expanded to a national sales office in Grand Rapids, Michigan by 1984.

Washington Packaging Supply Co

Seattle, Washington

Washington Packaging Supply Co is based in Seattle, Washington. The company does not publicly disclose its founding year, ownership structure, or founders.

Evergreen Plastic Container Inc. (EPC) operates from Vancouver, Washington, where it manufactures PET plastic containers for food and beverage markets.