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05-18
2022
The proportion of textile auxiliaries in the international market still has an advantage
According to statistics: the origin of EU imported textile products, from the country analysis, the top five are China, India, Pakistan, the United States and South Korea; the import value is 8.12 billion euros, 2.29 billion euros, 2.02 billion euros, 9.8 billion euros 12.0%, 5.1%, 18.6%, 3.6% and 6.1% year-on-year, accounting for 34.0%, 9.6%, 8.5%, 4.1% and 3.2%.
Application and general situation of textile auxiliaries and thickeners in pigment printing
Thickener, which is actually a rheological additive, is used in the textile printing and dyeing industry. It can not only thicken the coating and prevent sagging during construction, but also endow the coating with excellent mechanical properties and storage stability. Especially for water-based coatings with low viscosity, it is a very important class of additives.
Characteristics of Textile Auxiliary Anti-staining Agent and Analysis of Its Application in Industry
It has excellent cleaning, dispersing and suspending effects on the unfixed reactive, reducing, direct dyes, alkali agents and electrolytes on dyed and printed textiles, thereby improving the color fastness of textiles;
There are three coating methods: immersion coating, slide extrusion coating and free-fall curtain coating:
Immersion coating A method commonly used before the 1960s. The coating roller is immersed in the coating tank containing the coating liquid to a certain depth, and the support is wrapped tightly on the coating roller and runs forward at a constant speed. The coating liquid is evenly distributed on the surface of the support. Obviously only one coat can be applied per pass through the coating tank. The coating quality mainly depends on the liquid/solid wetting and spreading characteristics between the coating liquid and the coated support surface. The coating speed is generally limited to below 20m/min.
The production process of photosensitive emulsion directly affects its sensitivity
The production process of photosensitive emulsion directly affects its properties such as sensitivity, contrast and resolution. Its raw material specifications and reaction conditions (temperature and time, etc.) must be strictly controlled, and any slight changes will lead to changes in the performance of the photosensitive emulsion. In the production process of photosensitive emulsion, in addition to dosing, from the beginning of emulsification to the end of preparation, it must be carried out under a safe light in a dark room. The brightness of security lights (usually red) must also be tightly controlled. The robot operation is realized, and the whole process can be carried out in complete darkness.
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