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為什麽加熱壓印的的質量更好

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-16 | 412 Views | 🔊 Click to read aloud ❚❚ | Share:
為什麽加熱壓印的的質量更好

為什麽加熱壓印的的質量更好


凹凸壓印的壓印平板可用電熱板,電熱板是利用金屬底板電熱絲通電加熱,使承印物容易受壓變形。這是因為在紙張受壓加熱的時間內,紙張內部的水分迅速減少。

這就意味著紙張內部急
劇產生大量水蒸氣,這些水蒸氣都要通過毛細管散發出來。

散發
水蒸氣時,紙張內部組織受到相當大的壓力,這個壓力足以使紙張內部纖維錶面之間的分子結合受到破壞產生塑性變形。所以通過加熱壓印出來的凹凸壓印印品輪廓飽滿、層次分明、立體感強,質量較好。

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為什麽加熱壓印的的質量更好
為什麽加熱壓印的的質量更好

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