Atmospheric-plasma treater

Figure 20.7 Atmospheric-plasma treater for surface modification of polymer sheet material on an industrial scale.

A comparison of an atmospheric plasma and a 3D corona treater is given in Table 5.12. 

The trial runs were performed on a bare roll corona treatment system as well as on an atmospheric plasma treatment system, resident at the same pilot line. For all runs, two PVdC-coated polyester films were post-treated, one in the APT system with a helium/oxygen plasma, the other by means of a corona treater. Another sample constituted the control reference and was not treated. The samples were then printed at 90 mpm on a PCMC press with aqueous ink (Flint Ink) using a laser-engraved anilox roll to 300 lines per inch (Ipi) and a cell volume of 4.8 billion cubic microns (bcm)/sq.in. The printed image provided solid (100%) ink coverage. The calculated ink transfer (thickness) to the film, based upon this cell volume, was approximately 1.9 microns. The printed web drying temperature occurred at 121 °C, with a web temperature of 77 °C. 

An atmospheric pressure plasma ion bombardment treater together with an atmospheric CO2 composite snow spray cleaning module (see Figure 7.9) was positioned above an un-treated low density polyethylene (LDPE) material used in microelectronic devices (for use within military and aerospace electronic systems) for surface pretreatment prior to application of a Loctite 401 cyanoacrylate adhesive, and separately a Loctite 3553 light-cure acrylic adhesive. 

A device embodied by affixing an atmospheric pressure plasma ion bombardment treater with an atmospheric CO2 composite snow spray cleaning module (see Figure 3) was positioned above an un-... 

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