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BuKePrinting >> Questions >> 包絨水輥在印刷中有什麽特點

包絨水輥在印刷中有什麽特點

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-09-23 | 550 Views | Share:
雖說近代高速膠印機的輸水裝置,提倡以無絨水輥取代包絨水輥,但是,目前包絨水輥仍然處在普遍的應用之中僅就國產機器而言,在水輥錶麵包絨的狀況大致有二:其一是採用無縫雙面絨袋,使用時將它套在輥面上;其二是採用雙面絨布縫合,也叫有縫絨面。

包絨水輥在印刷中有什麽特點



雖說近代高速膠印機的輸水裝置,提倡以無絨水輥取代包絨水輥,但是,目前包絨水輥仍然處在普遍的應用之中僅就國產機器而言,在水輥錶麵包絨的狀況大致有二:其一是採用無縫雙面絨袋,使用時將它套在輥面上;其二是採用雙面絨布縫合,也叫有縫絨面。



水輥錶面為什麽要包上絨布呢?

①雙面絨布質地柔軟,在水輥的軟硬相間排列中,它與錶面鍍鉻的金屬輥接觸良好,有利於傳動與輸水


②雙面絨布的纖維結構疏鬆,在輸水過程中可儲存一定量的水分,當臨時停車後再開車時,不需要預先加水


③用雙面絨水輥輸水,水量傳布均勻,絕對不會產生半弧形的水綹。


④用雙面絨水輥做著水輥,可減少對印版錶面的磨損和振動對延長印版壽命和提高印版耐印率大有好處。

包絨水輥在印刷中有什麽特點
包絨水輥在印刷中有什麽特點



除了上述優點外,包絨水輥也存在著下述問題。


①對雙面絨布的清理與洗滌比較困難。


②雙面絨布的絨毛,因脫落而粘在印版錶面上容易造成次品的產生。


③無縫絨袋,套裝困難,只有在輥體錶面塗以少量桃膠時,方可迅速裝上。


④有縫絨布,需要縫合,稍有一時疏忽,將造成縫口打折或布面起棱,影響輸水效果,故對縫合技術要求嚴格。

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