Generation of a high-density highly non-equilibrium air plasma for high-speed large-area flat surface processing

Abstract

A new plasma source, the so-called diffuse coplanar surface barrier discharge (DCSBD), is described. DCSBD allows a visually diffuse high-density 'cold' plasma to be sustained in atmospheric-pressure air at a high plasma power density exceeding 100 W cm −3 that permits high-speed surface processing of large-area webs and flat surfaces. This is demonstrated by the results on a successful in-line activation of thin polypropylene fabric at 450 m min −1 and plasma exposures as short as 0.14 s. DCSBD basic features resulting in the observed high efficiency of plasma activation and the related plasmachemical mechanism are discussed briefly.

Energy Efficiency of Planar Discharge for Industrial Applications

“…1 mm. DCSBD has been used with positive results for treating of non-woven textiles [9], wood [10], silicon wafers [11], various foils and fibers [12][13][14], glass [7], metals [8] and bio-materials [15]. In the work presented here, the energy efficiency of DCSBD was estimated in order to improve the electrical circuit parameters of the DCSBD device, if necessary.…”

Diffuse Coplanar Surface Barrier Discharge in Artificial Air: Statistical Behaviour of Microdischarges

“…Volume DBD generates plasma that is non-homogeneous in most cases. The so-called Diffuse Coplanar Surface Barrier Discharge (DCSBD) was developed to address drawbacks of the volume DBD design [19][20][21]. The plasma of DCSBD discharge is generated in a sub-millimeter thin layer above the dielectric plate.…”

“…That enables a fast and homogeneous in-line plasma treatment of materials at high-speeds e.g. 450 m min -1 in the case of nonwoven textile [21]. Moreover, the DCSBD discharge design does not limit dimensions of the treated material, as the discharge design is of a surface type.…”

Low-Cost, Energy-Saving Plasma Method for Preparation of Inorganic Submicron Fibers

“…In this work we study the plasma assisted calcination of various types of submicron composite fibers by using Diffuse Coplanar Surface Barrier Discharge (DCSBD) [11,12]. The effect of plasma on the composite fibers comprising two types of polymers and several types of precursors prepared by two different spinning techniques (electrospinning and forcespinning) was examined in terms of the organic polymer removal using several of surface diagnostic techniques (Fourier Transform Infrared Spectroscopy -FTIR, Energy-dispersive X-ray spectrometry -EDX, X-ray Photoelectron Spectroscopy -XPS).…”

“…Plasma technologies are successfully replacing a number of processes in many fields of industry. With a large number of parameters by which the properties of plasma can be customized for a required purpose, it is an ideal tool for the removal of the organic polymer at room temperature in a relatively short time [7][8][9][10].In this work we study the plasma assisted calcination of various types of submicron composite fibers by using Diffuse Coplanar Surface Barrier Discharge (DCSBD) [11,12]. The effect of plasma on the composite fibers comprising two types of polymers and several types of precursors prepared by two different spinning techniques (electrospinning and forcespinning) was examined in terms of the organic polymer removal using several of surface diagnostic techniques (Fourier Transform Infrared Spectroscopy -FTIR, Energy-dispersive X-ray spectrometry -EDX, X-ray Photoelectron Spectroscopy -XPS).…”