Printing Equipment And Technology In Leather Printing Technology

Leather has been loved by people for thousands of years, but leather has always been shown in brown and black since ancient times. With the advent of warm winter, the demand for leather fashion is becoming more and more prominent. The market demand for leather post-processing products such as leather printing is more and more large, and the continuous technological progress of modern textile printing and dyeing industry has provided technical support for the production of all kinds of printed leather.

1. leather printing equipment:

Leather comes from animals, which determines the irregularity of leather.

      a.直接印花設備：首選當然是手工抬板，它有花型變化快，適應性廣，套色方便等優點。但是，手工抬板用于皮革印花，最大的毛病就是因為皮革的不規則性而造成的大量浪費，專業術語叫糊邊，最后要用剪刀修去的，所以手工抬板在皮革印花中用的并不多。

The most common type of leather printing is the roller printing machine. The special roller printing machine developed by South Korea has excellent printing effect. It can print any fine pattern, and the utilization rate of leather can be maximized. There is basically no waste.

      b.轉移印花設備：轉移印花要一臺印紙機和熱轉印機，目前國外用薄膜代替紙張，所以一臺薄膜印刷機也可以。

The heat pfer printing machine is different from the textile. It requires high pressure and normal working pressure is 20~30kg/cm2, generally using oil pressure.

      c.輔助設備：輔助設備是皮革印花廠的關鍵設備，他關系到產品種類，市場分額。

2. leather printing process:

      a.首先當然是染料印花，染料印花最大的優點就是手感不受影響。但皮革不能耐高溫蒸化，所以工藝不能照搬紡織品的。國外有一系列染料，主要是1：2型金屬絡合染料，用它印皮是不用蒸化的，晾干就可以了，但是這類染料價格高，力份僅為普通染料的30%至50%，碰到深濃顏色麻煩得很。

A series of dyes were selected from textile printing dyestuffs. Their fastness is the same as that of imported ones. They are brightly coloured and have high strength. They only have a slight fastness to light fastness. They can be dried on the leather and can not be steamed or washed.

      b.其次是涂料印花，這是皮革印花中量最大的一類印花。因為涂料印花能表達金銀色，配以燙膜，產品更是千變萬化，能最大限度的表達皮革高貴，華麗的特點。

      c.轉移印花：轉移印花是最適合皮革的一種印花方式，按工藝分干法、濕法兩種方式。干法轉移，多是用熱溶膠制成油墨，印于離型紙或bopp膜上，再熱壓條件下轉移于皮革上。濕法轉移，是先將一種特殊溶液噴與皮革上。然后通過熱壓，使轉移紙上的染料溶解與溶液，再固著于皮革上。皮革轉移印花，目前是皮革上最高檔的一類印花方式，花型的精細度，視覺效果，非其他方式可比。

Editor: vivi