14. A factory processes scented finishing fabric. The gray fabric is pure polyester 5.56tex
Answer There are many types of scented finishing agents. According to the scent, they are: jasmine scented, rose scented, perfume scented, lemon scented, osmanthus scented, etc. According to the dosage form, there are: microcapsule type, resin type, etc. Generally, different fragrances are selected according to personal preferences, with jasmine and perfume being the most commonly used. The microcapsule type is mostly suitable for printing, and the resin type is suitable for general finishing.
Perfume resin is a polymer compound composed of a variety of ingredients. Its main ingredients are low-formaldehyde finishing agent Ps and different fragrances and spices. For example, jasmine fragrance resin DD-X (produced in Kunshan, Jiangsu Province) appears as a light yellow liquid with a solid content of ≥ 40%, a pH value of 5 to 6, and good water solubility and stability. The key to using resin-based fragrances is how to firmly fix the fragrance on the fabric, allowing it to slowly release the fragrance, and have certain wear resistance and washability. If the general post-finishing process is adopted, that is, after padding the spice resin, followed by pre-baking, high-temperature baking and heat-setting finishing, the spice molecules will volatilize in large quantities, reducing the amount of spices fixed on the fabric. By first heat setting, then padding the perfume resin liquid, and then drying at low temperature, not only the perfume resin is well fixed on the fabric to form a film, but also the fragrance after finishing can stay on the fabric for a long time and have good cleaning resistance.
The process flow of finishing the fragrance of polyester warp knitted fabric with jasmine scented resin: the natural color cotton fabric is pre-baked after coloring, and then heated and tentered (setting temperature 180℃, vehicle speed 20~25m/min) → padding with fragrance resin Working fluid (two dips and two rollings, roll pressure 294.6kPa, liquid rolling rate 65%~70%, vehicle speed 20~25m/min) → drying (65~70℃, vehicle speed 20~25m/min) → finished product. This post-finishing process has good cleaning resistance for polyester warp knitted fabrics. After being washed 10 times with 4g/L detergent at room temperature, the fragrance is still strong. The pilling resistance of polyester fabrics is significantly improved, and the wrinkle resistance is good.
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