Khoren Sahagian

Khoren Sahagian
Materials Scientist

Editorial July 2014

Plasma treatments are a permanent and covalent substrate modification.  However many references note diminishing effects of plasma treatments with time.  One generalized conclusion is that the plasma modification is a temporary effect.  This conclusion is not inherently accurate or applicable to all plasma and material systems.  In truth there are many factors that govern the success and longevity of a plasma modification.  Research in plasma lacks harmonization in equipment, setup/configuration, and material selection.  These are key variables in a plasma modification.  Results from one method may not necessarily translate well to another experimental setup or class of material.  For this reason some engineering reviews of gas plasma do more to confound than to elucidate the scientific dialogue within industry.

 

Equipment design is of particular relevance in plasma industry.  This includes but is not limited to the electrode configuration, matching, RF frequency, and equipment geometry.  Many apparatus used in academia boast custom fabricated equipment or custom modification to existing tools.  Their equipment exemplifies engineering capabilities.  In my opinion the effectiveness of the equipment to a material system is specific and rarely generalizable to all materials or apparatus.

 

Plasma chemistry and substrate material should be matched correctly.  Some polymer systems may be either resistant or sensitive to specific plasma chemistry.  It is not enough to report gas, pressure, and power.   A complete characterization should understand the plasma stoichiometry and a hypothesis of the surface interaction.  Furthermore it must be accepted that many polymer systems are mobile, may swell with gas or moisture, or may undergo relaxation mechanisms.  Therefore be careful to consider pairing a material system with appropriate plasma source and plasma chemistry.

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Category: Activation / EPDM
16. July 2012   2:48 pm
Andy Stecher

Andy Stecher
Elgin, IL

One of the more significant advantages of atmospheric plasma treatment is the scalability of the technology.  Complex geometries can be addressed by a variety of different jet options and size is of no concern as there is no limit to the number of jets a single system can control.

Plasmatreat’s RD1004 rotational plasma jet allows for manipulation of the plasma into broader, more thermally sensitive streams.  This not only allows one jet to treat the width of many, but provides a more gentle treatment option that can be used on films, thin-walled containers, and other thermally sensitive products.  These jets can be arranged in any orientation to address different geometries that may be present on a product.

When intense cleaning or speed of treatment is of greater concern, the original straight plasma jet (PFW10) can provide the power necessary to get the job done.  These jets fire to a specific point and can be used to set up a curtain of plasma treatment as easily as they can be mounted on a robot to perform a more directed treatment path such as the gasket line on an electronic housing.

Combining the 2 approaches is what allowed Plasmatreat to become the world leader in EPDM Extrusion Treatment.  A rotational jet can be used to treat broader areas while a straight jet focuses on treating a deep channel on the same profile.  This modularity has always been a great strength or ours and can help you too!

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Andy Stecher

Andy Stecher
President Plasmatreat USA
Elgin, IL

Editorial April 2012

America and Canada are a truly great countries. Both regions are characterized by truly freedom loving people, both feature strong democracies despite the daily stalemates and political quabbles.  While their economies in general are powerful and have created some of the largest wealth per capita in the world, the recent 10-15 years have been marked by, in my view, myopic activities in industry: Manufacturing was given up on. With China achieving first “most favored nation status” and then later gaining access to the WTO, thus allowing for tax and duty favored imports, many manufacturing companies started to believe that they could not compete with China as well as other countries in the SE Asia region with their low wages and other low operating costs. Comprehensive new supply chain systems were set up, new operating and trading relationships were established, more and more company managers became ex-patriates. Some companies that wanted to continue producing product in North America were forced by large retailers such as WalMart to move their operations to a China location. The common crede became: Operating our production in China is the better way, there is no such future in North America.  

I disagreed from the Get-Go. I always believed that America needs manufacturing. One needs to build things to create value. Our countries cannot simply be service and consumption oriented societies. We saw what happened if when relied on the finance/banking sector alone. It created huge wealth only for a very few and when it all went wrong, we were all asked to pay the bill.

Manufacturing creates jobs at all levels, stimulates personal and professional creativity, helps shape products and processes and let us focus on the future by taking direct control. Plasmatreat works with manufacturers all over the world creating better and more productive operating environments. Here in Canada and the USA we have the potential to reclaim a top spot in the global arena of manufacturers. Designing and building product creates not only possibilities domestically but also sets the stage for successful exports. The USA in particular has been suffering from a negative trade deficit for several decades now. We need to think about reversing the flow of dollars into America not away from America. We need to support the Reindustrialization of America – we need to believe again in manufacturing. Plasmatreat together with our many industrial partners continuously are presenting ideas how to create competitive operating environments right here in North America. Our projects reach into various markets such as Solar, Medical, Packaging, Automotive and Electronics. We look foward to mastering the challenge to compete with low cost production countries, but we believe we can. Do you, too?

Till next time,

Andy

 

 

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