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BuKePrinting >> knowledge >> 畫冊印刷裝訂時書背塗熱熔膠操作

畫冊印刷裝訂時書背塗熱熔膠操作

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2021-01-17 | 949 Views | Share:
畫冊印刷裝訂時書背塗熱熔膠操作

畫冊印刷裝訂時書背塗熱熔膠操作

書芯經銑背、拉槽後,需上熱熔膠才能將書頁與書頁、書芯與封面黏合在一起,成為一本書。書背塗熱熔膠操作要註意以下幾點


①預熱。熱熔膠需要預熱到170~180℃,才能開膠訂機組。


②書背上膠。背膠的厚度一般控制在0.6~2mm之間,膠層要均勻。背膠上得薄,影響黏結強度;上膠厚,增加成本。背膠的長度應略短於封面規格尺寸1~2mm。過長易造成餘膠黏積機械傳動部件,使之出現故障;過短則會造成書背、書腳發空,影響書本質量。


③上側膠。為了保證書本的外觀質量,書芯與封面之間要上側膠,側膠的寬度一般為3~7mm,側膠要求上得越薄、越均勻越好,這就要求熱熔膠的流動性要好,溫度必須控制在180℃左右。切忌用底膠作側膠用,不然會使書本封面上起杠線,影響書本質量。

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畫冊印刷裝訂時書背塗熱熔膠操作
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