電暈處理機，又稱電子沖擊機，是對塑料薄膜表面進行電暈處理的主要設備，它廣泛應用于各種塑料薄膜加工行業。所謂電暈處理工藝，就是通過在電極上施加高頻高壓電源，使電極放電，氣體電離后產生的各種能量粒子如正負離子、電子、光子等在強電場的作用下，加速沖擊處在電極之間的塑料薄膜表面，使塑料表層分子連接的化學鍵斷裂而降解，增加表面的粗糙度。該工藝主要用在塑料制品的印刷和復合過程中，其主要目的是提高塑料表面的粘附力，為塑料制品的印刷和復制進行前期處理。電暈處理機通常由電暈放電架和控制柜兩部分組成。電暈放電架作為執行機構，安裝在塑料薄膜生產線上，對薄膜進行電暈處理。

一、電暈機放電架的工作原理和主要技術參數

(一)工作原理

電(dian)(dian)(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)(dian)(dian)架主(zhu)要由放(fang)電(dian)(dian)(dian)(dian)(dian)輥和放(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)組成。放(fang)電(dian)(dian)(dian)(dian)(dian)架安裝在塑料薄(bo)膜(mo)吹膜(mo)機(ji)與(yu)卷取輥之(zhi)間，薄(bo)膜(mo)由吹膜(mo)機(ji)吹出來(lai)，經過過渡輥后與(yu)放(fang)電(dian)(dian)(dian)(dian)(dian)輥的(de)圓弧部分緊密貼合起來(lai)，再經放(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)進(jin)行高壓放(fang)電(dian)(dian)(dian)(dian)(dian)，對(dui)薄(bo)膜(mo)表面進(jin)行電(dian)(dian)(dian)(dian)(dian)暈處(chu)理。兩(liang)個高壓放(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)產生大量等離子轟擊塑料薄(bo)膜(mo)表面，并進(jin)入薄(bo)膜(mo)內部，使薄(bo)膜(mo)分子產生極(ji)(ji)化，同時產生的(de)臭氧(yang)有利于(yu)油(you)墨的(de)氧(yang)化結膜(mo)。放(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)與(yu)放(fang)電(dian)(dian)(dian)(dian)(dian)輥之(zhi)間保持一定的(de)放(fang)電(dian)(dian)(dian)(dian)(dian)間隙，塑料薄(bo)膜(mo)驅動(dong)兩(liang)個放(fang)電(dian)(dian)(dian)(dian)(dian)輥在相反回轉方向上(shang)轉動(dong)。

(二) 主要技術參數

放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)間距:放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)間距是放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)架(jia)最為(wei)重要的(de)(de)尺寸，指(zhi)的(de)(de)是放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)與放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)輥輥面的(de)(de)距離(li)。放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)間隙小，在同樣功率的(de)(de)情況下，生產的(de)(de)載流子增加，處理效果變好。但(dan)當放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)間隙過小時，放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)架(jia)制造(zao)成本(ben)增加，塑(su)料(liao)薄(bo)膜易擦到溫(wen)度很高的(de)(de)放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)上，燙壞塑(su)料(liao)薄(bo)膜表面，因此放(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)極(ji)間隙以1～2mm為(wei)最佳。

放(fang)電(dian)(dian)輥(gun)直徑:放(fang)電(dian)(dian)輥(gun)的(de)(de)直徑視電(dian)(dian)暈(yun)機(ji)的(de)(de)功率(lv)而定，一般(ban)隨著(zhu)功率(lv)增大(da)而增大(da)。放(fang)電(dian)(dian)輥(gun)和(he)放(fang)電(dian)(dian)極(ji)長度:放(fang)電(dian)(dian)輥(gun)和(he)放(fang)電(dian)(dian)極(ji)的(de)(de)長度由所處理(li)的(de)(de)塑料薄膜的(de)(de)寬(kuan)度決(jue)定。

放(fang)(fang)電(dian)面(mian)積(ji)(ji):放(fang)(fang)電(dian)面(mian)積(ji)(ji)就是放(fang)(fang)電(dian)極突(tu)出部分的(de)(de)個數。電(dian)暈處理的(de)(de)效(xiao)果(guo)主要跟放(fang)(fang)電(dian)強度有關。增加放(fang)(fang)電(dian)的(de)(de)面(mian)積(ji)(ji)可(ke)以(yi)增大放(fang)(fang)電(dian)的(de)(de)強度

電暈放電架作為與薄膜直接(jie)(jie)接(jie)(jie)觸(chu)的(de)(de)機構(gou)，結構(gou)的(de)(de)合理性(xing)和操作的(de)(de)方便性(xing)直接(jie)(jie)影響(xiang)電暈處(chu)理的(de)(de)效果，進(jin)而影響(xiang)產品質量和企業(ye)效益。

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