Friction fastness is one of the important color fastness indicators of textiles. It refers to the degree of resistance to friction and fading of dyed or printed fabrics. Rubbing fastness is divided into two types: dry rubbing and wet rubbing. Commonly used testing standards are: AATCC8, ISO 105-X12, GB/T 3920, etc.
1. How to improve rubbing fastness ?
1. Sufficient pre-treatment:
Good pre-treatment is half of successful dyeing. Good pre-treatment will help The combination of dye on the fiber and insufficient pre-treatment will cause the dye to float on the surface of the fiber, resulting in a reduction in rubbing fastness. Regarding pre-treatment, you can refer to this article: Factors affecting the first-time success rate of dyeing – Pre-treatment
2. Reasonable dyes Choice:
Different dyes have different directness and fixation rate. The higher the directness and the lower the fixation rate, the worse the rubbing fastness after dyeing. Choose directness. Dyes with moderate color and high fixation rate can help improve the rubbing fastness of dyed objects.
3. Improvement of soaping and post-treatment:
For Dyes that are not fixed and floating on the fiber surface can effectively improve the rubbing fastness of the dyed object through reasonable soaping and post-treatment washing. For example, peroxide soaping of reactive dyes will improve the rubbing fastness and fix the color. Agents can improve the rubbing fastness of dyed objects, but if soaping is not sufficient, adding cationic color-fixing agents will lead to a decrease in rubbing fastness.
4. Improvement of cloth surface finish:
For cotton gray cloth For this reason, you should choose a gray fabric with even yarn count and smooth surface. Starting from improving the characteristics of the dyed cloth surface, the fabric is finishing, biological enzyme polishing treatment, etc., so that the smoothness of the cloth surface is increased, thereby improving its wet rubbing fastness.
5. Use of rubbing fastness enhancer:
Except In addition to the above aspects, the use of good rubbing fastness enhancers can greatly improve the dry and wet rubbing fastness of fabrics. Rubbing fastness enhancers are generally resin-based finishing agents that improve the rubbing fastness of fabrics through the cross-linking reaction of the resin. , when choosing a rubbing fastness improving agent, you need to pay attention to its impact on hand feel, color, light fastness, etc., as well as its environmental performance. The editor below recommends a rubbing fastness improving agent with good performance.
2. Rubbing fastness improving agent A-6
Friction Fastness enhancer A-6 is a cationic polymer compound that can significantly improve the dry and wet rubbing fastness of fibers. It is suitable for reactive dyes, direct dyes, indigo denim, vulcanized denim and pigment-printed fabrics. This product does not contain APEO, does not affect the feel of the fabric, is resistant to high temperatures, and is resistant to washing.
The rubbing fastness enhancer A-6 has a wide range of uses and can be used to improve the dry and wet rubbing fastness of indigo, vulcanization, reactive, direct dye and pigment printed fabric products.
It can improve the wet rubbing fastness of the fabric by 1 to 2 levels and the dry rubbing fastness by 2 to 2.5 levels.
It has a better effect on improving colors such as green orchid and navy blue.
Does not affect the color and light fastness of the fabric.
Does not affect the feel of the fabric.
Does not contain formaldehyde and APEO, and complies with EU REACH regulations.
[Recommended process for knitted fabrics]
Dip dyeing:
1) Clean floating colors
2) Soften
3) Adjust acid to around PH5.5, use A6 Quantity: 2.0～ 4.0g/L
Temperature × time: 40℃ × 10 minutes to 20 minutes</p
