Modular ozone generator improves laminate adhesion

A line of modular ozone generators for use on extrusion coating and laminating lines is said to improve the adhesion of laminate and allow increased production speeds. The generators apply ozone to the web at the laminating or coating nip, reportedly doubling or tripling bond strengths, compared to those without ozone treatment.

Ozone treatment is said to allow increased production speeds without using bonding agents, adhesives, solvents, or primers. It works with extrusion coating and laminating applications including polyethylene extrusion lamination, foam/vinyl lamination for automotive trim and other applications, pressure laminating of decorative films on consumer products, and laminating of other difficult materials onto vinyl or foam.

The ozone-generating portion of the system is isolated from the other components to minimize corrosion due to ozone leaks from the reactor. The ozone reactor uses ceramic-coated components for corrosion resistance. The power supply, ozone reactor, and cooling system components are each enclosed in their own cabinets and mounted to a portable, steel-frame cart.

There are two generator models: The LC-2000M is a 2-kW, 30-cu-ft/min system, and the LC-5000M is a 5-kW, 60-cu-ft/min system with a dual-chamber ozone reactor. Both systems have regenerative blowers for ozone reactor air supply, and closed-circuit water-to-air cooling systems so that reactor cooling is not a function of process air flow. Power for both systems is supplied by a CPT Series solid-state, high-frequency, high-efficiency power supply.

Corotec Corp., Farmington, CT
(860) 678-0038; www.corotec.com