1.1 Application of Atmospheric Pressure Plasma Equipment in Cotton Fabric Pre treatment
The Jiangnan Branch of the Chinese Academy of Textile Sciences has achieved certain results and progress in using this technology, and has formed a pilot production line. It is recommended to further verify the effectiveness of its final product in practice and compare it with the final product of traditional conventional pretreatment technology, such as the effect of removing pulp, especially PVA pulp, cotton shell and main cotton impurities, the color yield, color fastness, brightness, energy-saving and emission reduction effects, and cost comparison after dyeing. It is important to note that enterprises should be able to accept one-time investment applications. In recent years, due to the increasing environmental requirements for chemicals, wastewater, and waste materials in chemical treatment, there has been room for development in physical and mechanical treatment and sorting. This is one example, and the following is another.
1.2 Research and application of ultrasonic waves in water washing
There used to be an old concept that ultrasound technology was relatively easy to implement in the laboratory, but difficult to achieve in large-scale production. This is a project that combines industry and academia and has been first applied in dyeing and washing. The author believes that this technology can be extended to printing water washing and pre-treatment water washing. In the application of pre-treatment technology, the effect of removing impurities from pulp (especially PVA pulp) can also be tested. Of course, this also faces the need for a large number of experiments, comparisons, and accumulated work. Safety assessments, cost comparisons, and attention to one-time investment should be conducted to make the application enterprise acceptable. It can also be effectively combined with related new technologies to open up a new path for printing and dyeing pre-treatment.
2, Pay attention to the research and development of trend oriented product printing and dyeing pretreatment technology
2.1 Pre treatment process technology for new raw materials and multi-component products
(1) Chlorine bleaching process restricts the use of pre-treatment technology for hemp products
(2) Basic requirements for pre-treatment of air flow dyeing products. Due to the relatively small bath size of air flow dyeing, especially for natural fiber products containing cotton and linen, the transparency and uniformity are worth paying attention to.
(3) The pre-treatment process technology for loose fiber dyed products involves color spinning the dyed fibers, especially natural fibers such as cotton, which are prone to clumping after processing. Therefore, for fluffy fibers
There are certain requirements for properties such as softness, smoothness, etc., in order to improve their spinnability.
(4) The continuous pre-treatment of knitted fabrics has different requirements for processes such as singeing, bleaching, and silk finishing.
2.2 Continuous processing of yarn
This type of product also involves requirements for pre-treatment. It can be used not only for knitted yarn dyed products, but also for woven yarn dyed products. The continuous processing of yarn has been developed and applied by enterprises in terms of technology, equipment, and products, which is beneficial for increasing production, energy conservation, emission reduction, and cost reduction. Especially beneficial for the development of dual filament finishing products to reduce costs, it is suggested to incorporate "liquid ammonia filament finishing" into it, as gap type liquid ammonia finishing equipment has been developed, which is beneficial for the development of yarn liquid ammonia treatment products. If "liquid ammonia filament finishing" is introduced into dual filament finishing products, the dual filament finishing products will take it to the next level.
Cowint is the largest DTF Film Factory in China