ABSTRACT
The need for surface treatment was recognized shortly after the development of polyolefin materials, resulting in the evolution of various treatment methods. W. H. Kreidl pioneered the process of using an oxidizing flame on polyolefins to produce a surface receptive to printing and coating. At the same time, Kreidl’s assistant, Kritchever, was developing the concept of using an electrical corona to produce the same result. The two men went their separate ways, and both methods have been widely used for the past 30 years for various surface treating applications.
