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BuKe factory >> Questions >> 捲筒紙印刷模切工藝的制訂 ​

捲筒紙印刷模切工藝的制訂 ​

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-09-22 | 423 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
捲筒紙印刷模切工藝的制訂
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捲筒紙印刷模切工藝的制訂

1.套準光標的工藝制訂

在制訂套準光標工藝之前,首先必須瞭解該設備套準系統的工作原理和要求,要註意以下兩大方面。


(1)套準光標防乾擾要求。橫向位置套準光標左右兩側在5.0mm範圍內不能有乾擾源,縱向位置套準光標前後兩側不能有乾擾源,如產品圖案、凹印套印標志、色塊等。


(2)套準光標尺寸及數量要求。橫向位置套準光標線寬為20mm;縱向位置套準光標尺寸為3.0mm×7.0mm,若條件允許,光標數目與模切版周期最好一致,這樣既可提高機台對模切縱向位置套準光標的識別能力,又可減少模切套準時間和材料浪費



2.模切版輥的工藝制訂

捲筒紙模切主要有模切和模壓兩種工藝,工藝實現的關鍵在於確定模切版輥和壓凸版輥周長。在製作版輥時須考慮前工序紙張加工對紙張縱向變形的影響,通過統計得出紙張伸縮率,確定模切版輥的周長,否則版輥工作面周長與印刷圖案不匹配會使模切位置跑動厲害甚至無法進行模切。

捲筒紙印刷模切工藝的制訂
捲筒紙印刷模切工藝的制訂

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