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The Benefits and Limits of Teflon and Silicon Based Release Coatings

FRANK CHAPMAN

ABSTRACT:

Release coatings have become an indispensable part of molded plastic production to resolve resin sticking and build-up on mold surfaces. However, the selection of the correct release coating always presents a difficult challenge and must be carefully determined from a variety of factors including the resin chemistry, surface material and morphology, and operating conditions of the mold. This paper will discuss the chemistry behind what causes build up problems in the first place, followed by the history, benefits and limitations of various Teflon and Silicon based release coatings to solve mold build up problems. We will also different application techniques and best practices, as well as how to measure coating performance and detect quality defects

ABOUT:

Mr. Chapman is a pioneer in the Fluoropolymer Industry and in the development of fluoropolymer technologies and applications for the Pulp and Paper, Aerospace, and Chemical Industries.

Some of his major achievements are:

1957- Developed automatic molding techniques and defined the shrinkage characteristics for molding TEFLON® TFE resins.

1958- Studied and reported on the frictional properties of TFE resins and their reinforcement with inorganic additives.

1959- Initiated the most comprehensive study on the physical properties of TEFLON® TFE that is still the standard text today.

1960- Developed an isostatic molding process and made the first missile nose cones of TFE.

1964- Engineered the first sealer that would make continuous seals of FEP as the base film. Led the development of the process to manufacture and install on a mill dryer the first FEP heat shrinkable roll cover.

1965- Pioneered techniques and successfully lined chemical processing vessels with fluoropolymers.

1967- Made the first glass backed melt processable fluoropolymer sheet and linings.

1981- Pioneered in the development and application of wet sprayed ultra thick TFE and PFA coatings.

1996- Coinventor of heat shrinkable UHMW-PE & Fluoro-Wear™ 102.

2012- Coinventor – Covering of marine deck equipment with UHMW-PE

2016- Coinventor – Method of Making heat shrinkable tubing in a continuous process.

He is the inventor or coinventor of ten U.S. and foreign patents. In 1979, he was elected Chairman of the Fluoropolymer Division of the SPI. Frank M. Chapman was born and raised in a small town in Vermont and graduated from the University of Vermont in 1952 with a degree in Chemistry.

Following graduation, he joined DuPont and his first assignment was with TEFLON®. He left DuPont in 1966 to become General Manager of the Plastics Department of Parco in Los Angeles, followed by an assignment with Mather in Michigan.

He was one of the founders of Fluorodynamics Inc. and Chapman Industries Inc., which were both subsequently sold to Carborundum. In 1980, he formed Chapman Associates Inc. a consulting company and is a founder and director of Fluoron Inc.

He lives in Elkton, Maryland with his wife, Helen. They have four children, twelve grandchildren and five great grandchildren.

Frank M. Chapman is a member of The Plastic Pioneers, The Plastics Academy, and has been inducted into The Plastics Hall of Fame.

TEFLON® is a registered Trademark of E. I. du Pont de Nemours Company and is used under license by Fluoron, Inc.

Elkton, Maryland • P: 410-392-0220 • F: 410-392-4357 • E: sales@fluoron.com • www.fluoron.com

The Plastics Hall of Fame

Many are those who have made important contributions to the growth of the plastics industry to its current status as a major segment of the American economy. But them, there is a small group of leaders whose contributions were so significant that without them, the industry would not be where it is today.

It is to honor these movers of the industry that The Plastics Hall of Fame was established in October 1972 by Modern Plastics Magazine in cooperation with the Society of the Plastics Industry. In 1988, The Plastics Hall of Fame is endorsed by the SPI as well as the Society of Plastics Engineers, The Plastics Pioneers and the National Plastics Center and Museum.

Membership in the Plastics Hall of Fame is a very selective honor. It is bestowed by a Selection Committee upon those Americans who, in its judgment, were primarily responsible for raising the field of plastics to one of the major industries in the United States. Election to the Plastics Hall of Fame is a crowning achievement of any life spent in the plastics industry. It is a distinct honor that sets its recipient apart from his peers. It is based strictly on accomplishment and is, therefore, within reach of anyone who wants to dedicate his or her life to the furtherance of our industry. The Plastics Hall of Fame thus stands as an aim to be aspired to by those entering the industry now and as a spur to those who have been working in it for some time.

TEFLON® is a registered Trademark of E. I. du Pont de Nemours Company and is used under license by Fluoron, Inc.

Elkton, Maryland • P: 410-392-0220 • F: 410-392-4357 • E: sales@fluoron.com • www.fluoron.com

www.fluoron.com

CONTACT: fchapman@fluoron.com

PRESENTATION:  pending

Frank Chapman / Fluoron, Inc.