Tucson, AZ 85737
Tel: 520.575.8013 Fax: 520.742.0975
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Sigma Technologies in 1999 Introduced The First Commercial Atmospheric Plasma System for Treating Large area Webs - AIMCAL and EPA Technology Awards WHAT IS ATMOSPHERIC PLASMA TREATMENT? It is an ionized gas treatment like corona and flame, used to treat materials that require higher surface energies for promoting adhesion. APPLICATIONS Increasing Surface Energy Cleaning Organic Contaminants Sterilizing Nanolayer Functional Coatings SUBSTRATE MATERIALS Polymer Films - 10m Wide Webs Woven and Non - Woven Fabrics Natural and Synthetic Fibers, Paper, Foils Powders Glass, Polymer Sheets 3D Objects |
 Treater for Films and Textile Applications
Surface energy (and adhesion) levels can be achieved that are not possible with conventional corona and flame treatments. Based on the plasma gas chemistry, surface energies can be maintained for long periods of time with minimal performance loss. This means that treated materials may be converted months later without requiring additional treatment. |
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Atmospheric Plasma Treater Integrated on a Slitter (treater on top, power supplies in the foreground)
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Plasma Compared to Corona
Plasma Compared to Flame
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The Sigma Atmospheric Plasma Equipment can Function in the Following Operating Modes: A. Plasma Treatment: The system utilizes a mixture of Helium gas along with one or more other gases such as O2 , CO2, N2 , etc, to functionalize the material surface
B. Chemical CoronaTM In applications where a long lasting treatment is required with minimum additional cost to the treatment process, the plasma treater can run in a corona mode using Nitrogen (N2) gas. Nitrogen gas corona creates nitrile functional groups on the polymer surface which are strong bonding sites for coating laminating and metallizing applications. The lack of oxygen in the corona prevents oxygen induced damage (bond cleavage) and minimizes ozone production.
C. Atmospheric Plasma CVD: By incorporating certain equipment options, Sgma's atmospheric plasma systems can be used to deposit ceramic, organo-ceramic and organo-metallic coatings inline with other processes such as extruding. coating, laminating, etc. |
 FLAT PLATE PLASMA SYSTEM: This system is used in an Atmospheric Plasma CVD Mode, to deposit 80-100A SiO2 coating on continuously extruded polymer sheet material. Such system may also be used to clean, or functionalize plate glass and other substrates - it is not sensitive to substrate thickness. |
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