What are the main characteristics of Disperse Printing Thickener Series
Disperse Printing Thickener Series is the core additive in the dispersion dye printing process, designed specifically for synthetic fibers such as polyester and polyester. It is compatible with the "non-ionic and hydrophobic" characteristics of dispersion dyes, and has four core characteristics: thickening suspension, color holding and even dyeing, film-forming and washable, and easy to remove. At
Disperse Printing Thickener Series is the core additive in the dispersion dye printing process, designed specifically for synthetic fibers such as polyester and polyester. It is compatible with the "non-ionic and hydrophobic" characteristics of dispersion dyes, and has four core characteristics: thickening suspension, color holding and even dyeing, film-forming and washable, and easy to remove. At the same time, it needs to meet the practical requirements of no bubbles, good leveling, and no clogging in the printing process. Its characteristics revolve around four dimensions: application performance, process adaptation, printing effect, and post-treatment. It is suitable for mainstream dispersion printing processes such as circular mesh and flat mesh. The following are the core characteristics of each dimension, which are also key indicators for industry selection:
1、 Core application performance: high thickening suspension, stable color and anti delamination
This is the fundamental characteristic of Disperse Printing Thickener Series, which directly determines the storage and application stability of printing pigments, and adapts to the hydrophobic properties of dispersed dyes
Low addition, high thickening, and controllable viscosity: It belongs to the category of pseudo plastic rheological additives. The addition amount is only 0.5%~3%, which can adjust the viscosity of the color paste to the printing adaptation range (10000~50000 mPa · s), and the viscosity can be adjusted correctly according to the process requirements. For circular screen printing, high viscosity is selected, and for flat screen printing, low viscosity is selected to meet the viscosity requirements of different screen printing processes;
Strong suspension and dispersion, anti dye settling: It can form a three-dimensional network structure in water-based colorants, tightly wrap hydrophobic dispersed dye particles, and evenly suspend them, avoiding dye layering, settling, and clumping during storage/construction of colorants, ensuring consistent concentration of printing colorants above and below, and fundamentally solving the problem of "color difference and color dots" in printing;
Excellent thixotropy, easy to scrape and flatten: When subjected to shear forces (such as scraping and screen roller rotation), the viscosity rapidly decreases, and the color paste is easily transferred to the fabric through the mesh. After the shear force disappears, the viscosity quickly recovers, preventing the color paste from dripping on the screen, infiltrating and smudging on the fabric, and allowing the color paste to quickly flatten on the surface of the fabric, ensuring clear edges and no pinholes in the printed pattern.
2、 Process adaptation features: no foam, low viscosity, suitable for the entire printing process
Fully conforming to the requirements of the dispersed printing screen printing process, from mixing, scraping to drying, there are no process adaptation issues throughout the entire process, reducing practical difficulty and waste rate:
No bubbles/low foaming properties, no clogging of the screen and no pinholes: no bubbles will be generated during the mixing and scraping process, avoiding bubbles blocking the mesh holes of the screen and forming pinholes/exposed bottoms on the printed fabric. No additional defoamers need to be added, reducing the process risks caused by the compounding of additives;
Low adhesion and high cleanliness of the screen: Low adhesion to the screen (nylon, polyester), making it difficult for the ink to stick to the screen after scraping, and easy to clean the screen, reducing screen clogging and cleaning frequency, improving printing production efficiency, and avoiding pattern blurring and uneven lines caused by screen sticking;
Good compatibility with the system, no adverse reactions: can be compounded with commonly used dispersing printing aids such as disperse dyes, dispersants, leveling agents, crosslinking agents, etc., without flocculation, layering, emulsion breaking, or adsorption reactions with polyester fabrics, ensuring the stability of the printing process;
Resistant to electrolytes/acid and alkali, suitable for a wide process window: stable performance in weakly acidic to neutral systems with pH 5-8, resistant to small amounts of electrolytes (such as inorganic salts in dyes) in color pastes, and will not cause a decrease in thickening effect or dye flocculation due to the presence of electrolytes. Suitable for dispersed dyes and process formulations from different manufacturers.
3、 Printing effect characteristics: uniform color matching, flexible film formation, clear patterns
Directly determining the quality of dispersed printing products, balancing color expression and pattern formation, and adapting to the aesthetic requirements of synthetic fiber printing:
Strong color retention and increased color yield: It can form a thin and dense thickening film on the surface of the fabric, firmly fixing dispersed dye particles in the printing area, reducing dye "migration" (diffusion blending) during drying and steaming processes, improving dye uptake and color yield on polyester fabrics, and making printed colors more vivid and full;
Good uniformity, no color difference on both sides: allowing the color paste to spread evenly on the surface of the fabric, avoiding the "yin and yang" and "stripe marks" caused by uneven consistency of the paste, ensuring color consistency of the same batch and pattern, especially suitable for large-area solid color printing and line printing;
Film formation is flexible, resistant to bending and abrasion, and does not crack: The film formed after drying has excellent flexibility and matches the stretchability of polyester fabric. During subsequent cutting, sewing, and washing processes, there will be no cracking or peeling of the film layer, avoiding dye shedding or color fading caused by film layer damage;
No paste spots, soft printing feel: using excellent thickeners such as low polyether and modified acrylic ester, there is no hard or brittle feeling after film formation, and no paste spots will form on the surface of the fabric, maintaining the soft feel of the polyester fabric itself, avoiding hard and stiff printing areas, and improving the wearing experience of the finished product.
4、 Post processing features: easy to wash, no residue, and improved wash fastness
Dispersed printing requires a post-treatment process of steam curing, water washing, and soap washing. The easy washability of thickeners is the key, which directly affects the color fastness and appearance of the finished product
Easy to wash away with cold/warm water, no residue of paste: During the washing process, the three-dimensional network structure of the thickener is easily destroyed by water and can be quickly dissolved/dispersed in the washing water, without the need for high temperature or strong alkali, to avoid the residue of paste forming "white stains and gray spots" on the surface of the fabric and ensure the cleanliness of the printed product;
Not affecting dye fixation and improving wash/rubbing fastness: without chemical bonding with dispersed dyes, it will not interfere with the diffusion and fixation of dyes into the interior of polyester fibers during the steaming process. After washing, there is no residual substance covering the fiber surface, ensuring the wash fastness (≥ 4 levels) and dry/wet rubbing fastness (≥ 3-4 levels) of dispersed printed products, meeting the national standard requirements for textile printing fastness;
No floating color, non staining other fabrics: During the washing process, no dye particles will be carried to form floating color, avoiding dye staining on the white areas of the fabric or other fabrics during washing, solving the common problem of "white staining" in dispersed printing, and improving the qualification rate of printed products.
5、 Environmental protection and practical additional features: low toxicity and odorless, stable storage, suitable for industrial production
Meeting the environmental requirements of modern textile printing and dyeing and the practical needs of large-scale production are important auxiliary indicators for industrial selection:
Environmentally friendly formula, no prohibited substances: The mainstream dispersing printing thickeners are acrylic acid ester and polyurethane water-based additives, free of formaldehyde, APEO, and heavy metals, meeting the OEKO-TEX Standard 100 environmental protection standard and suitable for the printing requirements of exported textiles;
Good storage stability, no layering or dilution: The storage period can reach 6-12 months at room temperature (5-35 ℃), and there will be no layering, dilution or agglomeration during the storage process. After opening, the remaining material can also maintain stable performance, suitable for batch stocking and continuous production of printing and dyeing enterprises;
Temperature resistance suitable for printing process: It can withstand the process temperatures of printing drying (80-120 ℃) and steam curing (130-140 ℃), and will not decompose or produce odors at high temperatures. It will not cause a decrease in thickening effect due to high temperatures, ensuring stable performance throughout the entire process;
Easy to operate, no need for complex compounding: It can be directly diluted with water and mixed with dispersed dye slurry. The process of adjusting the slurry is simple and does not require the addition of other auxiliary agents. Even beginners can quickly master it and adapt to the large-scale and standardized production of printing and dyeing enterprises.
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