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Hoffer Plastics Corporation in South Elgin, IL is comprised of a 365,000 square foot climate-controlled, self-powered facility. There are eight focused factory operations within the facility to serve the company’s primary markets – packaging, commercial industrial, automotive and appliance industries. The company operates on the “Lean manufacturing” principle, maintaining high productivity while fostering a valued-employee atmosphere. The company also focuses on environmental responsibility and the goal of zero waste through conscientious material handling and overall efficient plant management.

Tekleen filters were chosen at Hoffer Plastics because they use less water than other filtration methods, and are completely stainless steel, and not enameled surfaces. They filter the chilled water in the closed loop systems used in plastic processing, and the tower water used to cool hydraulic oil. Prior to the installation of the Tekleen filters, daily walk-throughs were required to observe and check the older high-maintenance bag filters.

There have been several stages of Tekleen filter installations at the Hoffer Plastics facility. The first Tekleen filter was installed in January 2012. Since this successful first test at Hoffer Plastics, the company has been adding Tekleen filters. The most recent additions include Tekleen filter Models ABW8-LP, ABW4-LP and ABW4-XLP. These are 4 and 8 inch filters that operate within the tower and chilled water systems. The tower water filter is rated at 1125 gpm at 70 psi with a 100 micron screen. The chiller filter is rated at 340 gpm at 72 psi with a 50 micron screen.

The Tekleen installation is part of the overall strategy, and has contributed significantly to water savings. As a result of these extensive measures, Hoffer Plastics has received a 2015 Governor’s Sustainability Award for significant achievements in energy efficiency, waste reduction, pollution prevention and environmental programming.



Process water from a plant’s cooling tower is often contaminated with airborne dust, pollen, algae, plastic fines, and pipe scale. These contaminates circulate through heat exchangers and chillers and significantly reduce the system’s cooling ability. As a result, extruders, molding machines, molds, and compressors can heat up and endanger the quality of the product manufactured as well as the machines.

Tekleen self-cleaning water filters provide the ultimate solution where dirty cooling water is a problem. The filters operate on line pressure alone. Self-cleaning is triggered by a pressure differential and is accomplished in seconds without interrupting the flow. The filters are compact in size and designed to meet a wide variety of industrial applications.