A predecessor who has been engaged in dyeing and printing work for decades is worth collecting.

Grey cloth printing and dyeing process
1. Billet inspection and sewing grey cloth:

Nbsp; & nbsp; & nbsp; B, blank inspection is mainly to control the quality of grey cloth, to see if there are yarn drawing, weft, dead fold, macula, mildew and other abnormalities, while paying attention to check whether the cloth species and requirements are consistent. Under normal circumstances, we need a batch number to check the inspection.
Nbsp; & nbsp; & nbsp; & nbsp; A. In order to make the yarn wool-free, the yarn is sized, so it is necessary to desizing before dyeing for coloring.

Nbsp; & nbsp; & nbsp; & nbsp; C, after desizing, usually wash clean, otherwise the fabric with high PH value will appear abnormal dyeing.

Dyeing: < br style = "margin: 0px; padding: 0px; color: RGB (51, 51), line-height: 30px; font-family: Simsun; font-size: 12px; white-space: normal; ms-word-wrap: break-word; max-width: 100%; box-sizing: box-border;"
Nbsp; & nbsp; & nbsp; (1) dyeing methods of chemical fibers: < br style = "margin: 0px; padding: 0px; color: RGB (51, 51); line-height: 30px; font-family: Simsun; font-size: 12px; white-space: normal; ms-wrap: break-word; max-width: 100%; box-sizing: border;"
Nbsp; & nbsp; & nbsp; & nbsp; A, room temperature coil dyeing: general temperature below 100 C, mainly used for dyeing semi-glossy nylon taffeta, nylon oxford, nylon twill cloth, etc. This method is easy to produce abnormal colors such as head and tail color difference, left middle right color difference and crease.

Nbsp; & nbsp; & nbsp; & c, overflow dyeing: the temperature is about 100 to 130 degrees, mainly used to dye polyester such as Chunya, peach skin, polyester Oxford, Tameron, nylon-polyester interwoven, etc., polyester spinning can also use overflow dyeing, at the same time, nylon spinning and other requirements for wrinkle dyeing also use this way. This method is easy to produce abnormal colors, such as color flowers, chicken feet marks, straight strip dyeing and folding. D. Warp-axis dyeing: suitable for all kinds of cloth, but according to the quality requirements, reasonable use, dyeing temperature can be controlled at 100 ~130 ~C above, this way is easy to produce shallow edges, layer difference and other abnormalities.

Nbsp; & nbsp; & nbsp; A, cotton dyeing: generally long car dyeing (requiring large quantities), pad dyeing (large quantities, small batches), overflow dyeing (medium and small batches). Reactive dyes (with good fastness), direct dyes (with poor fastness) and reductive dyes (with the best fastness) can be used.

Nbsp; & nbsp; & nbsp; C, T/C, C/T dyeing: overflow dyeing is generally used, polyester is dyed before cotton, polyester is dyed with disperse dyes and cotton is dyed with reactive dyes (good fastness). It is also dyed with a long car and dyed at one time with a direct dye (poor fastness).
Nbsp; & nbsp; & nbsp; & nbsp; A, acid dyes: used for dyeing nylon fabrics, generally to fix to improve color fastness, but also pay attention to the choice of dye combination and the use of reasonable dyeing process. Improper selection or high dosage of fixative will cause hard feeling.

      C, reactive dyes and direct dyes: they belong to low temperature dyes.

Nbsp; & nbsp; & nbsp; & nbsp; 5. Inspection: (br style= "margin: 0px; padding: 0px; color: RGB (51, 51); line-height: 30px; font-family: Simsun; font-size: 12px; white-space: normal; ms-word-wrap: break-word; max-width: 100%; box-sizing: box-border;"
Nbsp; & nbsp; & nbsp; & A, middle inspection should test various color fastness of cloth, at the same time, attention should be paid to check fabric surface quality, such as: creases, chromatic aberration (chromatic aberration, cylinder aberration, pigmentation), color, stain, oil stain, yarn drawing, weft gear, warp strip, etc. B. Control of defective products should not be allowed to enter the next section to prevent increasing costs, because after finishing and processing, some abnormal fabrics can not be repaired or it is very difficult to repair, so the intermediate inspection is very important. C, rearrange and stitch the cloth before entering the workshop.

After setting, the physical and chemical properties of fabric are relatively stable, such as shrinkage, width, warp and weft density, etc. are not easy to change, and the cloth surface is relatively flat. At the same time, some functional processing can be done in the stereotyping section, such as water splashing (waterproof), softening, resin coating, flame retardant, antistatic, super water splashing (Teflon treatment), moisture absorption and sweat elimination, anti-bacterial and odor prevention, etc. B. Because of the high setting temperature, we should pay attention to the color changes before and after the setting, especially some sensitive colors, such as gray, military green, light khaki, etc. Products generally require alignment of the color. C. Shaping can control the width, warp and weft density and shrinkage of cloth, especially the shrinkage control, which directly affects the processing cost, so special attention should be paid to it. Our requirement for shrinkage is generally 3% for washing and 2% for washing. The three main factors affecting stereotyped effect are temperature, speed and over feeding. D. Several kinds of stereotyping processes: br style = "margin: 0px; padding: 0px; color: RGB (51, 51, 51); line-height: 30px; font-family: Simsun; font-size: 12px; white-space: normal; ms-word-wrap: break-word; max-width: 100%; box-sizing: border-box;"
Nbsp; & nbsp; & nbsp; & nbsp; (1) waterproof and dust-proof function of fabric by water splashing; < br style= "margin: 0px; padding: 0px; color: RGB (51, 51); line-height: 30px; font-sun; font-size: 12px; white-space: normal; ms-word-wrap: break-word; x-width: 100%; box-sizing: border;"
Nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp Water splashing and softening can be done at the same time to make the fabric waterproof and soft, but the softener will affect the water splashing degree.

Nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (4) flame retardant setting can assist the flame retardant function of fabrics, flame retardant can also be sprinkled water setting at the same time, but special attention should be paid to the selection of water sprinkler, otherwise the flame retardant effect will be greatly affected.

Nbsp; & nbsp; & nbsp; & nbsp; moisture absorption and perspiration stereotyping allows the fabric to absorb sweat quickly, making sportswear more comfortable. You can't do it with splashing water.

Nbsp; & nbsp; & nbsp; & nbsp; super water sprinkling finalization (also known as Teflon treatment): has better waterproof, dust-proof effect than ordinary water sprinkling finalization, but also has oil-proof function. Generally speaking, guests will ask to pass DuPont tag.

Nbsp; & nbsp; & nbsp; & a, the role of calendering; & softening handle; & to make the calendering surface of the fabric smoother, narrow the gap between the fabric fibers to prevent velvet effect or to achieve higher water pressure when gluing; & nbsp; & nbsp; & a, calendering effect; & glossy effect. The three elements of B and calender are temperature, speed and pressure. Calendering will change the color of the fabric. C. Glue coating can make the fabric waterproof, velvet-proof, wind-proof and other functions. It can also fix the yarn of the fabric, increase the look and feel, and make the fabric more useful. D. Adhesive coated with acrylic (also known as AC, PA), PU glue, moisture permeable breathable glue, can be processed into transparent glue, white glue, silver glue, colour glue, pearlescent glue, beautiful glue and so on. The raw materials can also be added to the glue so as to resist ultraviolet, flame retardancy and yellowing resistance.

Nbsp; & nbsp; & nbsp; & nbsp; 8. Adhesive PVC: Attention should be paid to the thickness, handle, peeling strength and quality of adhesives.

      10, water washing: some cotton cloth, N/C and T/C have to be washed by water. Water washing is divided into three kinds: ordinary water washing, soft water washing and enzyme washing.

Nbsp; & nbsp; & nbsp; & nbsp; 11. Complete inspection: inspect the quality of finished products, classify them into grades, and pack them for shipment. Generally, complete inspection records and sticker difference tables are required. Any problem should be timely feedback to the salesperson so as to communicate with customers timely.