The Approaches And Measures To Improve The Fastness To Wet Rubbing
Time: Click: 479
4.2 The approaches and measures to improve the fastness to wet rubbing
4.2.1 to choose proper dye
Choose high solubility, low substantivity, high diffusivity and high dye-fixing rate dyes and use in the printing process to reduce the unfixed dye.
4.2.2 To improve and complete the printing process continuously
To improve and complete the printing process continuously. It provide a standard of the production management, technology index for the manufacturers. In the manufacturing process, the manufacturers should strictly arrange manufacturing according to the related stipulation. And ensure the process of preliminary treatment, making print paste, printing and finishing is done properly. This process will improve the dye absorbing, penetrating, unfixed dye reducing and fastness to wet rubbing.
4.2.3 To brush the fabric before printing
In traditional fabric manufacturing process, we do not brush the fabric. But the brushing the fabric before printing have the following advantages. By brushing the fabric, the floating fluff on the fabric will be removed. And the fluff on the fabric will be short, even and thick. And it will improve the fastness to the wet rubbing.
4.2.4 To increase the even wash of fabric after it is been treated in the process of printing and ageing.
The reactive dye have low fixation rate. It is commonly 60%-70%, and up to 80% at most. So the water wash of the crumpled fabric after its treatment in the process of printing and ageing is important, it will wash out the unfixed dyes and color lake which have significant effect on the fastness to wet rubbing. The even wash process is : 1, wash off the unfixed dye and thickener from fabric using large quantity of running cold water.2. Before soap washing, even wash the multislot moving and remove the thickener, If the after cold and hot fully water wash, soap washing immediately will cause the tarnishing. And the floating is not easy to be washed off. 3. Soap wash fully, even wash on the open width washing machine. Usually, wash twice for medium and deeper print fabrics. 4. Use good quality water in case of the forming of color lake.
4.2.5 Excellent fastness to wet rubbing enhance agent
At present, the wet rubbing fastness improver includes: polyamine polymer dye-fixing enhance agent, organosilicone wet friction enhance agent, polyurethane wet friction fastness enhance agent. The polyamine polymer dye-fixing enhance agent will react with dye and form insoluble salt, and increase the dyeing.
May 11, 2017I. The choose of dyeThere are a great variety of reactive dye with different quality level. So the choose of qualified dye becomes important.1. The choose of bi-functional reactive dyes and multi-func...view
May 11, 2017At present, the flannelette is classified into two class: double-face flannelette , and single-face flannelette. Cotton flannel printing can be classified into blotch printing and duplex printing. And...view
May 12, 2017The Improving of the fastness to wet rubbing of the deeper color fabric dyed with reactive dye is one of the method to enhance the fabric's quality and overcome the export barrier.The reasons that cau...view
June 9, 20171. Strengthen the pre-treatment, especially the process of boil-out bleachingUsing a mild non-caustic oxygen bleaching process(such as oxygen bleach accelerator + H2O2) to avoid the wet rubbing fastne...view
April 29, 2017Other wet rubbing fastness improving agent is poor at deep dyeing for direct, reactive，indigo blue and sulfur dyestuffs, especially for dark black, bright red and turquoise blue whose wet rubbing fastness...view