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BuKe factory >> Questions >> 印刷機橡皮布的結構與特點

印刷機橡皮布的結構與特點

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-09 | 364 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
在多層纖維織品的錶面上,塗敷以厚度不等的天然橡膠或合成橡膠層,把它裁切成與橡皮滾筒相適宜的矩形塊,並以此去適應膠印中圖文轉移的需要。這種富有彈性的布,稱為橡皮布。

印刷機橡皮布的結構與特點

在多層纖維織品的錶面上,塗敷以厚度不等的天然橡膠或合成橡膠層,把它裁切成與橡皮滾筒相適宜的矩形塊,並以此去適應膠印中圖文轉移的需要。這種富有彈性的布,稱為橡皮布。


錶面橡膠層既是直接轉移圖文的工作層,又是印刷壓力的直接承受層,同時也是擠壓變形的最敏感層。橡皮布有普通橡皮布和氣墊式橡皮布之分,目前在世界上廣泛應用的仍然是普通橡皮布(或稱實心橡皮布)。這種橡皮布在壓印過程中,錶面橡膠層在壓印線的前緣往往會產生凸包。根據壓縮原理推斷,這種硬橡皮在受壓狀態下,其體積不會收縮,所以只能擠向壓印線的兩邊。

橡皮布的軟硬,主要取決於橡膠層錶面硬度。根據一般經驗橡皮布的軟硬可按肖氏(Hsh)硬度判定。軟包襯:肖氏硬度為70~74,中性包襯:肖氏硬度為74~78,硬包襯:肖氏硬度為78~82。

印刷機橡皮布的結構與特點
印刷機橡皮布的結構與特點

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