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Corona Treated Materials

By Sue Chambers on Jan 23, 2014 12:00:00 AM

Topics: Converting

All materials have an inherent surface energy ranging from high to low. Plastics, cloth, and paper products typically have lower surface energy in comparison to other materials. A low surface energy will make it difficult to bond inks, adhesive, and other coatings to a product. That’s where corona treatment comes into play. These materials can be corona treated to change their surface energy allowing inks and adhesive to create a strong bond to the surface of the product.

Corona Treatment – A surface treatment modification often performed on films and paper products that changes the surface energy to create a better bond for inks, adhesives, and other coatings.

Corona treatment was invented in 1951 by Verner Eisby. His customer needed a way to print on plastics, but the current methods were crude and uncontrollable. Corona treatment was his solution to that problem, and it has developed into a more efficient and controllable process. Corona treatment is also known as air plasma based on the treatment process.

From our friends at Linkage Labels (Courtesy of Ron Jamieson):

“Corona treatment is based on passing a material through a high-frequency electrical discharge formed between two electrodes on either side of the material."

"The electrical discharge creates a plasma field – a mix of electrons and ions that bombard the surface, removing surface contaminants and reacting with the surface to form hydrophilic functional groups that promote formation of chemical bonds between the surface material and inks or adhesives.”

One limitation to corona treatment is that the treatment will not last forever. It is important for converters to test the dyne levels before printing or laminating adhesive onto the material. As the corona treatment wears away overtime the material may need to be re-treated before converting for a final product.

At Strouse we slit and die cut Corona Treated materials to create the converted parts that you need.

If you have any questions or comments please post it to the comments section below.

Sue Chambers

Written by Sue Chambers

As the CEO and President of Strouse Corporation, Sue Chambers is responsible for leading all facets of the business. Sue has a proven executive management track record and over 20 years of experience driving sales growth and operational innovation in the adhesive conversion industry. Sue possesses strong leadership, strategic vision, and savvy marketing skills. Sue has an MBA from Loyola University in Maryland. Since 1997 Sue Chambers joined Strouse and led the transformation into an enterprise-focused company while growing the company into a world leader in the innovative production of pressure-sensitive adhesive with revenue of over 20 million and growing. In the last three years, Strouse revenue has grown 62%; the number of employees has grown and continues to achieve and maintain ISO 9001 and ISO 13485 certification. Strouse built a new production plant going from 40,000 to 62,500 square feet, increasing the production space by 50%. The building also can expand to 82,500 sq. Feet. Sue is active in the community serving on the Industrial Development Board presently and earning several business awards over the years. Most recently, 3M has recognized Strouse as a supplier of the year. She is also on the Dale Chambers Foundation board that raises money for local charities in the community.

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