Atmospheric Plasma Treatment Systems

Atmospheric Plasma Treaters 



  - Uniform Treatment

  - High Dyne Long Lasting Surface Energy

  - Effective Surface Cleaning

  - Excellent   Adhesion Promote

  - No Pin-Holes when Treating Porous Materials

  - Minimizes or Eliminates Ozone Generation

  - Customized Plasma Chemistry

  - Available For a Wide Range  of Substrate Sizes

  - Simple and Rugged Construction

  - Automatic Control of Power and Plasma Gas 

  - Can Be Used to “Graft” Coatings on Surfaces  


Polymer Materials

Synthetic and Natural Fibers


Metal Surfaces


Glass Surfaces

Sigma’s Atmospheric Plasma (APT) system is designed to provide superior quality surface treatment on a broad variety of substrates that includes, fabric, films, foams, powders, paper and foils. Sigma’s APT system incorporates both ceramic and metal electrodes, powered by a mid frequency generator with PLC controlled gas mass flow system, for controlling the plasma gas through the electrodes. One or more plasma gasses can be fed into the treater chosen from a variety of gases that include, N, Ar., He, O2, C2H2 and others. 

Examples of Atmospheric Plasma Treatment Systems

Atmospheric Plasma Treater 4m Long

Atmospheric Plasma Textile Treater

Treater Inline with a BOPP Extrusion Line                                      Two Sided Treater for Treating Texiles

Atmospheric Plasma Plate Treater

Atmospheric Plasma Metal Cleaning

Atmospheric Plasma Treater

Atmospheric Plasma Treater

Inline high energy treater with air exclusion system

Plate Treater for SiOx Coating

on Polycarbonate Extrusion 

Lab System for Batch 

and Roll to Roll Treatment

Plasma Treater for Cleaning

Hard Disc Drive Heads

Atmospheric Plasma Treater

Electrode Adjustment

Not Required 

New APT3 - Atmospheric Plasma Technology:  

Provides high level plasma gas sealing, which minimizes contaminants and reduces the quantity of inert and reactive gases injected into the plasma region.   The APT3 plasma treaters incorporate a self-adjusting electrode system, which eliminates the need for adjusting the gap between the electrodes and the substrate 


The atmospheric plasma systems shown above canopearate in one or more of the following operating modes:


  1. Plasma using Helium/argon and any other gas reactive gases utilizing mostly ceramic electrodes​, for applications that cannot tolerate the presence of plasma streamers
  2. Chemical Corona (a pseudo-plasma discharge) created by utilizing plasma electrodes, but feeding highly reactive gasses that without the use of He or Ar.   This is a low cost alternative to plasma for obtaining unique treatment of surfaces without the use of high cost inert gas.
  3. Conventional Corona – Superior to most conventional corona due to electrode configuration and generator frequency.  All plasma treaters can operate in htis mode.
  4. Reactive gases and organic monomers injected into a plasma.  This process is used to create  grafts and nanothick coatings that have durable and unique surface functionalization properties. 

Life of Surface Activation as a Function of time for Different Plasma Treatments VS Corona Treatment on BOPP FIlm 

Plasma Treatment of PP

Atmospheric Plasma Treatment of PP

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A Special Nitrogen Based Treatment is Used to Economically Treat Wide

Web Substrates Moving at High Speed, Where Ar of He Based

Plasmas May be Prohibitively Expensive