Injection Molding
Four Process, LTD
595 8th St, Valley Park, MO 63088, United States
- Manufacturer
- Founded 1974
- Woman-owned, Family-owned, Small business
- ISO 9001:2015
- Short-, medium-, and long-run production
About Four Process, LTD
Four Process, LTD was founded in 1974 in St. Louis, Missouri, by Hubert Fox, a U.S. Army veteran and tool-and-die engineer. The company began as a cast-to-size tooling foundry and machine shop before transitioning to custom precision plastic injection molding. Today it operates as a woman-owned, third-generation family small business headquartered in Valley Park, Missouri. The company runs a 23,000-square-foot facility equipped with 85- to 500-ton presses, a quality lab, assembly cells, and robotics automation. Its core services include insert molding, over molding, hot-runner and cold-runner injection molding, plus component sourcing, prototyping, part assembly, specialized packaging, sonic welding, adhesive bonding, product testing, and custom inventory management. Four Process handles short-, medium-, and long-run production across a wide range of engineering, commodity, and specialty plastics. Customers include Rug Doctor and Arundale Products, and the company has produced parts for the shoe, medical-device, and electronics industries. Its cross-trained team supports both transfer work and reshoring projects aimed at reducing supply-chain risk. Four Process differentiates itself through four cultural pillars—communication, honesty, value, and reliability—and a proactive, data-driven approach that includes custom inventory programs to prevent shortages and accelerate fulfillment.
Manufacturing capabilities
Core processes
Inspection & quality
Assembly & services
Industries served
- Shoe
- Medical device
- Electronics
Materials
Engineering plastics · Commodity plastics · Specialty plastics
Equipment
- 85- to 500-ton injection molding presses
- Central material handling system
- Robotics automation
- Quality lab
Company details
- Location
- Valley Park, Missouri
- Company type
- Manufacturer
- Founded
- 1974
- Ownership
- Woman-owned, Family-owned, Small business
- Production volume
- Short-, medium-, and long-run production
- Certifications
- ISO 9001:2015
Frequently asked questions
Where is Four Process, LTD located?
Four Process, LTD is located at 595 8th St, Valley Park, MO 63088, United States.
What does Four Process, LTD do?
Four Process, LTD is listed under Injection Molding, and its listed capabilities and products include Insert molding, Over molding, Hot runner molding, Cold runner molding, Custom inventory management and Component sourcing.
What industries does Four Process, LTD serve?
Four Process, LTD lists Shoe, Medical device and Electronics among the industries it serves.
What certifications does Four Process, LTD have?
Certifications on file for Four Process, LTD: ISO 9001:2015.
When was Four Process, LTD founded?
Four Process, LTD was founded in 1974.
How do I request a quote from Four Process, LTD?
Use the Request a quote button on this page to send Four Process, LTD your requirements through FirmsLedger, or call (636) 677-5650 and visit fourprocessltd.com.
What companies are similar to Four Process, LTD?
Other Injection Molding companies in Missouri listed on FirmsLedger include C-K Plastics, Inc., Tabor Plastics Company and PMB Inc..