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Chaobang hot melt glue for bookbinding

August 22, 2019

[China Packaging Network News] As a newly emerging industry, thermal transfer has more and more market, but it is not easy to get a share of it. How much do you know about the difference between gravure printing, screen printing, and color printing? What kind of inks and pastes do you need for different types of printing? Today, we will answer the questions from the user's concern, let you know more about ink and glue, but also to avoid you fall into the wrong shopping.
1. Gravure printing
Gravure printing is a direct printing method. It directly impresses the ink contained in the gravure pits onto the substrate. The gravure printing graphic has a convexity, rich layers, clear lines and high quality. Most of the printing of book and pictorial, packaging and decoration uses gravure printing, but the printing cycle is longer, the efficiency is more expensive and the cost is higher, so it is suitable for large-volume printing. What kind of ink is suitable for gravure printing?
1.1LX-402 back coating/back coating ink
This ink can play anti-static and prevent the phenomenon of adhesion between the finished glue layer and the back in the process of product production and printing. Generally, it needs to use a 200-line coating roller to coat once. The coating temperature is generally 80-140 degrees. The cloth speed is 40-80 meters/minute.
2, screen printing
Screen printing is the extrusion of the squeegee, so that the ink is transferred to the substrate through the mesh of the graphic part to form the same graphic as the original. Screen printing equipment is simple, easy to operate, printing, plate making simple and low cost and colorful, long shelf life, fast delivery and other advantages. So what kind of ink and mortar do we need to choose?
Let's first understand the basic sequence of screen printing ink usage:
Transparent paste →→Gold onion pulp→→White paste→→Anti-sublimation paste→→Glue
From the basic sequence, we analyze the ink and glue.
2.1 transparent paste
Transparent paste: 301 ordinary transparent paste, which is an economical, acrylic grade coating; 305-A4 advanced elastic transparent paste is an environmentally friendly, highly flexible polyurethane grade coating.
2.2 Golden onion pulp
BB-030 gold and green onion is highly transparent and used to modulate green onions.
2.3 White glue
White glue: 301-B white paste and 304-B high wear-resistant white paste are economical, acrylic grade coatings; 305-B and 305-AB high-elasticity white paste are environmentally friendly, highly flexible polyurethane grade coatings.
2.4 anti-sublimation pulp
303-H Sublimation Mastic is used to block TC cloths and sublimation dyes.
HMA-200A: Economical, suitable for most fabrics. Flexibility.
HMA-529C: Suitable for all fabrics. Elasticity, feel best, best washing fastness.
HMA-531A: high elasticity polyurethane, special glue for washing water.
HMA-533: Elasticity and wash water are OK, but HMA-529C is not good.
2.6 screen printing ink
Screen printing ink viscosity is relatively large, over screen printing, slower drying, stirring viscosity is small, standing viscosity. We produce
W-110 transparent, net W-102 white, net W series other color number for the high-end products, solvent-based, polyurethane grade, high tensile, high rebound, printing fine wash water, hot press not hot Variants, can be used to wash water or other high-end screen printing heat transfer production, the product has passed SGS EU environmental standards; PA-102PVC white joint ink dedicated to the heat transfer of PVC sheet production, inelastic, but good coverage High-adhesion products have passed the SGS EU environmental protection standards.
3, color printing
Color printing is a direct or indirect method, the image or text of the original plate, printed with color ink on the printing plate, the ink can be transferred to paper or other substrates by the pressure, the color saturation can be achieved , Wide color gamut, good transition, far more than the traditional printing effect.
After understanding the grouts and inks that gravure printing and screen printing need to use, what kind of color printing is needed?
Color printing ink is divided into: sublimation color printing ink, UV color printing ink, low temperature color printing ink, high temperature color printing ink.
3.1 sublimation color printing ink
It belongs to imported disperse dyes, with good transfer rate and bright color. It is used for offset color printing.
3.2UV printing ink
Tough UV ink, used for heat transfer color printing, bright color, color layer alkali-resistant wear-resistant; can also be used to print soft PVC material.
3.3 Low-temperature color printing ink
Suitable for low temperature heat transfer color printing, 302-B red is a special custom product, fast, washable.
3.4 high temperature printing ink
Suitable for high temperature heat transfer color printing
For example, what are the precautions for the gradient heat transfer?
If you want to do a gradient color heat transfer, then you must do color printing; pay attention to the effect of gradient colors, because it is to do color printing, gold, silver and other metal colors or more colorful can not do, these colors must be screen printing Yes.

The above is the Chaobang hot melt glue for bookbinding we have listed for you. You can submit the following form to obtain more industry information we provide for you.

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