Mack Molding

Mack Molding is a vertically integrated contract manufacturer headquartered in Arlington, Vermont, with six locations in the United States. Founded in 1920 by chemist Donald S. Kendall and Kenneth W. Macksey, the company began in a small New Jersey garage with three rebuilt molding presses and has operated for more than a century. It is recognized among North America's largest non-automotive injection molders.

The company's capabilities run from front-end product design, development and prototyping through to production and delivery. It runs more than 120 injection-molding presses, including large-part molding, and works with thermoset plastics. Downstream services cover machining, sheet-metal fabrication, painting and finishing, assembly, testing, supply-chain management, warehousing and fulfillment.

Mack Molding serves customers across several markets, including medical, industrial, transportation, robotics, energy and utilities, and defense. Its earlier work included bottle caps and what is described as the first plastic part used in a commercial product, a component for Otis Elevator Company, followed by wartime components, consumer goods and automotive products.

Operations are spread across six U.S. sites, and the breadth of in-house processes - molding, fabrication, finishing, assembly, testing and logistics - means work spans manufacturing floors, quality and testing functions, supply-chain and warehouse operations, and engineering support.