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.直接印花设备：首选当然是手工抬板，它有花型变化快，适应性广，套色方便等优点。但是，手工抬板用于皮革印花，最大的毛病就是因为皮革的不规则性而造成的大量浪费，专业术语叫糊边，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.转移印花设备：转移印花要一台印纸机和热转印机，目前国外用薄膜代替纸张，所以一台薄膜印刷机也可以。

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.辅助设备：辅助设备是皮革印花厂的关键设备，他关系到产品种类，市场分额。

2. leather printing process:

      a.首先当然是染料印花，染料印花最大的优点就是手感不受影响。但皮革不能耐高温蒸化，所以工艺不能照搬纺织品的。国外有一系列染料，主要是1：2型金属络合染料，用它印皮是不用蒸化的，晾干就可以了，但是这类染料价格高，力份仅为普通染料的30%至50%，碰到深浓颜色麻烦得很。

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，这是皮革印花中量最大的一类印花。因为涂料印花能表达金银色，配以烫膜，产品更是千变万化，能最大限度的表达皮革高贵，华丽的特点。

      c.转移印花：转移印花是最适合皮革的一种印花方式，按工艺分干法、湿法两种方式。干法转移，多是用热溶胶制成油墨，印于离型纸或bopp膜上，再热压条件下转移于皮革上。湿法转移，是先将一种特殊溶液喷与皮革上。然后通过热压，使转移纸上的染料溶解与溶液，再固着于皮革上。皮革转移印花，目前是皮革上最高档的一类印花方式，花型的精细度，视觉效果，非其他方式可比。

Editor: vivi