December, 2019


www.us- tech.com


Outsourcing Plasma Treatment for Surface Modification


Continued from page 56


chemical functionality or linker chemistries at the surface, allowing conjugation of a wide variety of mol- ecules, ranging from small molecule drugs and peptides to larger biopoly- mers, such as carbohydrates and antibodies. Amino,


carboxylic,


hydroxyl and epoxy functionalities are important examples of the chemistries that are readily obtain- able using a gas plasma surface treatment.


Expertise in Plasma Treatments Contract processors should ide-


ally bring a combination of resources for plasma R&D and experience with many customer types in markets beyond medical devices. Working with a contract proces-


sor also has tremendous advantages when it comes to tapping into the years of technical expertise applying a variety of plasma treatments. This can often speed research and devel- opment efforts significantly. In many ways, the application


of plasma is the domain of chemists and other scientists. Companies like PVA TePla, for example, have three Ph.D. scientists and surface, poly- mer, physical, bio and organic chemists, as well as engineers, plas- ma physicists and metallurgists on staff.


“Because we see the similarities


in the types of materials being treat- ed, our experience allows us to devel- op and optimize custom proprietary processes quickly and efficiently, saving our customers significant time and money during product development,” says Barden. An extensive knowledge and


experience manufacturing plasma equipment is also a plus, given that most contract processors just pur- chase equipment


from global


providers. However, with a background in


plasma equipment manufacturing, the contract processor can provide critical insight on validation, produc- tion methods and fixturing, as well as hardware and software modifica- tions. Examples include special hard- ware for batch processing, such as a mass flow controller, a different pump configuration or unique cham- ber sizes. Additional specifications, such


as antistatic for electronic parts, can be accommodated. Antistatic fans can be used to remove static on the parts when the chamber is opened. Even the way the parts are deliv-


ered to the contract processor, or how they are packaged and returned can be modified as needed. Parts can be sent in specific counts in bags or in specifically designed preloaded trays. Once treated, the parts are typically packaged in polyethylene bags, but for customers with electronic devices like PCBs, antistatic bags can be specified to protect components from electro- static discharge (ESD). PVA TePla’s turnaround times


can be quite fast. A single batch can be completed in an hour, and large batches of 1,500 parts, for example, can be treated and shipped within a


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Page 61 Ultra-Low Vibration Lab Continued from previous page


Record-Low VC-M Level The final vibration survey by


day or two. For medical device man- ufacturers interested in treating parts and components with plasma, but do not want to make the invest- ment just yet, or require only small batches, outsourcing it to a qualified contract processor could be the solu- tion they seek. Contact: PVA TePla America,


Inc., 251 Corporate Terrace, Corona, CA 92879 % 951-371-2500 fax: 951-371-9792 Web: www.pvateplaamerica.com r


Colin Gordon Associates (CGA), an international vibration and acoustics consultant, after installation of the customized Minus K negative-stiff- ness isolators and tables showed the measured vibration levels in all ULVL chambers from VC-K to VC-M at


Vibration criterion (VC) curves are commonly used in the evaluation of the ambient vibration of facilities. “VC-M is the lowest we have


ever measured, though we were not able to measure below 2.5 Hz,


because our most sensitive sensor will not go lower, due to sensor noise floor,” says Hal Amick, vice president of CGA. The measurements by CGA


revealed that the tables provide iso- lation between 1.25 and 160 Hz, at least 10 dB above 2 Hz, 20 dB above 4 Hz and 80 Hz. This is remarkable, given the


frequencies above 2.5 Hz.


low noise environment in which these tables have to perform. Contact: Minus K Technology,


Inc., 460 S. Hindry Avenue, Unit C, Inglewood, CA 90301 % 310-348-9656 E-mail: sales@minusk.com Web: www.minusk.com r


KY Z E N . C OM WORLDWIDE ENVIRONMENTALLY RESPONSIBLE CLEANING TECHNOLOGIES


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