What is the purpose of thickening agents for paint printing

Source：www.kg.com.cn Release date： 2026-03-11

Thickener for coating printing is an indispensable specialized additive in textile coating printing technology, mainly used to adjust the rheological properties and viscosity of printing pigments and coatings, adapt to mainstream printing processes such as screen printing, circular screen printing, and flat screen printing, and solve core problems such as sagging, infiltration, layering, and settling in the coating printing process. It can ensure the smoothness of printing construction, improve the accuracy of printing patterns, color saturation, and finished product texture, while optimizing the stability of coating storage. It is a key auxiliary material for textile printing and industrial printing, widely used in various printing fields such as textile fabrics, home textiles, decorative materials, leather, etc.
1、 Core purpose and functional role
1. Adjust the consistency of the color paste to adapt to the printing construction process
This is the most fundamental and core use of thickening agents for paint printing. Most of the original pigment printing pastes have low viscosity and strong fluidity, which cannot be directly used for printing operations. After adding thickeners, the viscosity of the paste can be correctly adjusted to meet the construction viscosity of different printing equipment such as wire mesh, circular mesh, and flat mesh. This not only ensures that the paste can be smoothly transferred to the substrate surface through the mesh holes without clogging or missing printing problems, but also avoids the flow and dripping of the paste due to insufficient viscosity, ensuring the continuous and smooth operation of printing operations and adapting to the operational requirements of various industrial printing production lines.
2. Prevent pattern infiltration and smudging to improve printing accuracy
Thickening agents for pigment printing can effectively enhance the thixotropy and water retention of pigments, prevent the lateral penetration and blending diffusion of pigments on the surface of fabrics, leather and other substrates, firmly lock the outline of the printed pattern, make the edges of the pattern clear and neat, straight and distinct, and eliminate defects such as blurring, edge bleeding, and color misalignment. For high demand printing scenarios such as patterns, small patterns, and gradient patterns, thickeners can restore the design effect, greatly improving the delicacy and clarity of printed products, and meeting the precision standards of home textiles, clothing fabrics, and decorative printing.
3. Avoid pigment settling and layering, improve storage stability
The pigment paste for pigment printing contains a large number of solid pigment particles, which can easily cause problems such as particle settling, layering, and pigment agglomeration when left to stand for a long time. This not only affects the uniformity of printing color, but also damages the printing equipment. Thickener can form a three-dimensional network structure in the pigment slurry system, effectively suspending and fixing pigment particles, preventing pigment sinking and aggregation, and keeping the pigment slurry in a uniform and stable state during storage, transportation, and standing, without layering, precipitation, or agglomeration. It can be used immediately after opening the bucket, extending the shelf life of coating printing pigment slurry, reducing raw material waste and construction failures.
4. Optimize color coverage and color rendering effects to improve color fastness
Excellent coating printing thickeners can assist pigments in evenly adhering to the surface of the substrate, avoiding uneven color thickness, exposure, and color differences caused by the flow of pigments, improving the coverage and color saturation of coatings, and making printed colors bright, uniform, and color free. At the same time, it can enhance the adhesion between pigments and substrates, and improve the dry wet friction color fastness and washing color fastness of printed products with color fixing agents, preventing color fading and fading during later use, and extending the service life and aesthetics of printed products.
5. Improve the texture of the printed film layer and reduce defects
After adding thickening agents, the printing ink becomes smoother and smoother after film formation, without surface defects such as pinholes, orange peel, and flow marks. The film thickness is uniform and consistent, and the hand feel is soft and not stiff. It is especially suitable for textile fabric printing, without affecting the softness and breathability of the fabric itself, balancing aesthetics and practicality. For printing on special substrates such as leather and non-woven fabrics, it can also adapt to the characteristics of the substrate, optimize the adhesion of the film layer, and avoid cracking and peeling of the film layer.
6. Reduce paint splashing and loss, save production costs
Appropriate viscosity can significantly reduce the splashing and overflow of ink during the printing process, reduce raw material waste, and facilitate the control of coating dosage to achieve correct printing, avoiding cost losses caused by excess ink residue. In addition, stable color paste performance can reduce the frequency of equipment cleaning and maintenance, improve overall printing production efficiency, and indirectly reduce production costs.
2、 Main application scenarios
Coating printing thickeners are mainly used in textile and clothing fabric printing, home textile product printing (curtains, sofa covers, bedding), leather printing, non-woven fabric printing, decorative wallpaper printing, industrial fabric printing and other fields. They are suitable for water-based environmentally friendly coating printing systems and meet the current industry demand for green production and printing. They are irreplaceable special additives in various printing processes.

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