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    • 7. 发明授权
    • Process and device for surface pre-treatment of plastic by means of an
electrical corona discharge
    • 通过电晕放电对塑料进行表面预处理的工艺和装置
    • US4929319A
    • 1990-05-29
    • US156572
    • 1988-02-17
    • Peter DinterLothar BotheJohn D. Gribbin
    • Peter DinterLothar BotheJohn D. Gribbin
    • C08J7/00B29C59/10B29C59/12H01T19/00
    • B29C59/12B29C59/103H01T19/00
    • For surface pre-treatment of a plastic article, such as a film sheet or the interior of a plastic molded article, by means of electrical corona-discharge, a device is provided having a generator 5 and a corona discharge device 11. The generator applied a high-frequency, high-voltage alternating current to the discharge electrodes 4 of the corona-discharge device 11. The grounded counterelectrode used is the metal core 2 of a roller 10 over whose peripheral coating 3 a film sheet 1 is transported. A housing 6 encompasses the electrodes 4 of the corona-discharge device 11 and is connected via a line 7 to an atomizer 8 in which a liquid is atomized to form an aerosol by means of a piezoelectrically operating ultrasonic vibration system or by two-component atomizer nozzles which operate at ultrasonic speed. A fan 9, the throughput rate of which can be regulated, is connected to the atomizer 8 and pushes the carrier gas, for example, air, for the aerosol through the atomizer into the corona-discharge device 11. Further corona-discharge devices can be present into which an aerosol of another liquid or only a reactive gas are fed.
    • 对于诸如薄膜片或塑料模制品的内部的塑料制品的表面预处理,通过电晕放电,提供具有发生器5和电晕放电装置11的装置。所述发生器应用 向电晕放电装置11的放电电极4施加的高频,高压交流电。所使用的接地反电极是辊10的金属芯2,其周边涂层3是膜片1。 壳体6包围电晕放电装置11的电极4,并且经由管线7连接到雾化器8,其中液体被雾化以通过压电操作的超声波振动系统或双组分雾化器形成气溶胶 以超声波速度工作的喷嘴。 可以调节其吞吐量的风扇9连接到雾化器8,并通过雾化器将用于气溶胶的载气例如空气推入电晕放电装置11.另外的电晕放电装置可以 存在于其中供给另一种液体或只有反应性气体的气溶胶。