欧美一级在线观看_91热久久免费频精品黑人99_AV无码AV高潮AV喷吹免费_亚洲六月丁香六月婷婷色伊人,国产亚洲综合久久系列,欧美日韩高清在线 ,婷婷综合久久中文字幕蜜桃三电影

Can we help you find something?

News
Location : Home> News>Company News

Flexo printing process characteristics of UV ink

Click:[1805] Publish Time:2019-07-22

In flexo printing of UV ink, it is also very important to obtain reasonable coloring power.

The key to obtain a reasonable colouring power is to ensure that there is a reasonable 

and optimal number of pigments in the graphic and textual parts of the printed products.

That is to control the proportion of pigments in ink.

If the pigments are insufficient, the saturation of the prints will decrease.

At the same time, the dyeing power decreases; if the pigment is excessive, 

the fluidity of the ink decreases, the ink layer solidifies slowly, and the ink transfer is bad, which affects the adhesion of the ink.


uv led system



Even if the pigment in flexo printing with UV ink is reasonable, if the dispersibility of the pigment is not good, 

it will also affect the performance of flexo printing machine and the color intensity of the first printing product.

Pigment particles should be fully dispersed in ink, which is the premise to ensure the uniformity and consistency of color.

When UV ink flexo printing is dried and cured, the odor similar to acrylic acid escapes slightly.

Although this odor may have some impact on the environment, so far no harm has been found to the human body.

UV flexographic ink has been used in the field of food packaging abroad for many years without any problems.

Solvent recovery system and catalytic oxidation technology have been used abroad to effectively solve the problem of organic matter emanating from ink in flexo printing.


uv led linear system



Curing speed of UV flexographic ink.

The drying and curing properties of ink layer refer to the polymerization reactivity of ink.

There must be a reasonable proportion of pigments and photoinitiators in ink.

The excessive photoinitiator will lead to the rapid curing of the ink surface, 

while the ink inside is still in the liquid state. If the ink is processed immediately, it will bring adverse effects.

In addition, due to the post-polymerization reaction, that is, excessive photoinitiator continued to react in the ink (after UV photostop) for 16-24 hours,

the ink layer will be too hard until embrittlement, and the ink layer will break during subsequent processing.

Therefore, the printing ink should be thin, not excessive light. Under ideal conditions, the reasonable drying and curing rate is 100-150 m/min.

For the non-coated and porous printing materials, the UV ink has penetrated into the inner of the printing materials before drying and curing, 

so the drying and curing speed should be reduced appropriately.



led uv curing oven

  



主站蜘蛛池模板: 北宁市| 赞皇县| 平邑县| 武穴市| 梧州市| 德惠市| 洛扎县| 定兴县| 铜陵市| 定南县| 西乌珠穆沁旗| 镇沅| 化德县| 娱乐| 阿拉善盟| 石首市| 潮州市| 南城县| 蒙阴县| 怀远县| 北票市| 蛟河市| 东丽区| 苗栗县| 高雄市| 吉隆县| 祁阳县| 桑植县| 新野县| 奉贤区| 梨树县| 元谋县| 新蔡县| 高淳县| 丽江市| 孝昌县| 平谷区| 万山特区| 营山县| 永修县| 文化|