Plastics Manufacturing Companies in Washington

Washington has approximately 6,500 manufacturing establishments and 290,000 manufacturing employees. Washington is the nation's leading aerospace manufacturing state, dominated by Boeing's Everett and Renton assembly lines, with additional strength in food processing and tech manufacturing.

Washington contributes to the national plastics manufacturing landscape. Plastics manufacturing encompasses companies that convert plastic resins into finished products through injection molding, extrusion, blow molding, thermoforming, and rotational molding processes. The US plastics industry includes over 15,000 manufacturing establishments producing everything from automotive parts and medical devices to consumer products and packaging.

Custom Injection Molders: Companies operating injection molding presses from 20 to 6,000+ tons for automotive, medical, consumer, and industrial parts.

Extrusion Operations: Manufacturers producing plastic pipe, tubing, profiles, film, and sheet through continuous extrusion processes.

Blow Molders: Companies producing hollow plastic containers, bottles, tanks, and ducts through blow molding processes.

Thermoformers: Manufacturers forming plastic sheet into trays, clamshells, panels, and enclosures using vacuum and pressure forming.

Compounders & Recyclers: Companies blending resin formulations and processing recycled plastics into pellets for molding operations.

Major industrial centers in Washington include Seattle, Spokane, Tacoma, Everett, Renton, and Kent. These cities have concentrations of manufacturers across sectors including aerospace manufacturing, food processing manufacturing, and wood products manufacturing.