6. Chemical fiber and cotton blended dyed yarn fabrics: cotton blended dyed yarn fabrics, dimensional cotton blended dyed yarn fabric pre-treatment process and cotton dyed yarn fabric is roughly similar, if not drift finishing apply to the fabric in white inlay lines, dark products, just after singeing, mercerizing process. Outdoor Decorative Flags Cotton blended dyed yarn fabric are subject to the heat setting process. Custom Outdoor Banner Flags Bleach finishing used to cook white yarn or white silk and mixed fabrics dyed yarn, which normally takes the bleach twice.
Specific process requirements of the pre-treatment processes similar to the corresponding fabric pre-treatment process. Color fabric is local yarn before dyeing to practice drift, must first experimental observation yarn dyes in acid, alkali, bleach, heat the role of the color yarn dyes can not be used to fade achromatic, Outdoor Decorative Flags nor staining of yarn section, take the color, in order to ensure product quality. Customized Garden Flags
Six, yarn processing
Color fabric and knitted products commonly used in dyeing yarn system woven. Must remove the fiber yarn before dyeing natural and man-made impurities, so the yarn before dyeing, after pre-treatment process. Without the sizing yarn, yarn processing including scouring, bleaching, mercerizing process. Outdoor Decorative Flags Customized Monogram Garden Flags
One. Yarn scouring the yarn scouring the purpose, requirements and scouring agents have the same fabric scouring.
(1) yarn scouring equipment: general atmospheric pressure cook the yarn pot, chain hank piled up in the pot of boiled yarn, atmospheric scouring back speaker to rely on the bottom of the pot Ministry of pipe to make the practice fluid convection heat after boiling. overflow from the horn nozzle from the bottom up, Advertising Flags For Businesses resulting in the practice of fluid circulation.
The high pressure boiled yarn pot can be divided into vertical high pressure boiled yarn pot pot two kinds of horizontal high-pressure boiled yarn. The vertical structure and vertical high-pressure cook the yarn pot boiled cloth pot similar to a wider application. According to yarn capacity 1t, 2t, 2.5t, 3t several specifications, Printed Teardrop Flags the horizontal high pressure boiled yarn pot pot body was lying cylindrical one end of the cylinder has to open the closed door, Outdoor Decorative Flags the pot can accommodate two vehicles heap yarn car, pile yarn car tracks out of the boiled yarn pan. Other devices, such as circulation, heating devices and accessories are the same with the vertical. Horizontal boiled yarn pot Yarn out of yarn in the pot outside and out of the convenient pot of boiled yarn, but covers an area of large, wide application.
(2) scouring process: cotton yarn scouring the main agent is caustic soda, caustic soda amount of impurity content of the original yarn, yarn structure and scouring process. Such as impurities containing various types of yarn, strands and coarse yarn, atmospheric scouring the pot scouring the yarn, after scouring and mercerizing caustic soda, Outdoor Decorative Flags bleach and ice dyes and vat dyes dyed yarn, scouring should be increased in scouring the yarn evenly through favorable permeability.
(1) scouring the temperature and time: scouring the temperature at high temperature as well, and can shorten the time of scouring. Atmospheric pressure due to low temperature scouring pan, scouring about 5 ~ 7h boiled boring Yarn 2h; high pressure scouring from 147 ~ 196kPa pressure is reached, Outdoor Decorative Flags maintaining the temperature 4h. Polyester-cotton blended yarn, cotton blended yarn dimension should be taken only at atmospheric pressure scouring, scouring can also be used soda ash.
(2) scouring liquor ratio is 1:5: high pressure boiled yarn pot, liquor ratio is too small, then the yarn is exposed outside the scouring liquid, make scouring uneven, and could easily lead to oxidative embrittlement damage, atmospheric pressure scouring pot practice when the bath should be appropriate to relax and maintain the fluid volume. But the bath than in the past, easy to make cotton yarn floating, leading to the disorder of the yarn twist.
Scouring yarn in the pot first with hot water and cold water washing cycle, the pan and then washed with cold water, full, and then stacked in the yarn pool cover with a damp cloth to prevent local air-dried.