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    Development Process Of Natural Fiber Fabrics

    2012/8/21 9:54:00 22

    Natural FibersFabricsProcessesProcesses

     

      

    Natural fiber

    The material is combed long staple cotton and new environmental protection raw material bamboo fiber.

    The product is designed for the spring and Autumn period with a medium thickness and a double-layer weave.

    The inner and outer warp yarns are combed pure cotton 18.3 tex yarn, the ratio of the table to the meridian is 2:l, the warp organization cycle is 24, the surface weft is made of bamboo fiber 27.8texX2 yarn, the inner layer weft is combed pure cotton 18.3 tex yarn, and the inside and outside weft ratio is 1:2.

    Select the "down connect" knot method, connect the node organization to re balance, so that the appearance of longitudinal stripes will be formed on the cloth surface, the surface layer will imitate the hair, the inner layer feels fine, and the clothes will be comfortable.


    1. Opening and cleaning process.


    Bamboo fiber is of good uniformity and no impurity.

    Avoid excessive damage to the fibers and form neps.

    According to the characteristics of fiber, we should adopt the technological principle of "less, more loose, lighter quantity and slower speed".

    Enlarge the distance between the driver and the dust stick, reduce the speed of the beater properly, and ensure the smooth flow of the fiber flow.

    According to the characteristics of long staple cotton with fine, long and less impurity, the technology principle of "more loose and less beating, opening and combing, slow slow feeding, early falling and less crushing" is adopted to reduce fiber damage and fracture.


    2. Carding process


    Adopt the technology principle of "light weight, low speed and tight spacing", reduce combing, reduce combing and reduce combing.

    Reasonably control the speed ratio of cylinder, thorn roller and doffer line.

    Ensure the smooth pfer of fibers, improve fiber separation, reduce impurities in sliver neps and improve the quality of cotton web.


    3, and rough

    working procedure


    Adopting two drawing lines and adopting the technology principle of "large spacing, heavy pressure and low speed", the drafting of the front and back parts is rationally allocated.

    Under the premise of ensuring that the yarn is not "hard head", we should appropriately increase roving twist factor and grasp the draft area appropriately, so as to prevent accidental elongation and reduce coarse details.

    Because bamboo fibers are prone to static electricity, rubber cots with high elastic coatings are used.


    4. Spinning process


    Emphasis is laid on improving yarn evenness and reducing coarse details and hairiness.

    The parameters such as drafting multiple, nipper spacing and roller spacing are selected.


    5, winding


    Using 1332M winder, equipped with electronic yarn clearer and air spray splicer, keep yarn channel clean and burr free, prevent deterioration and hairiness of yarn, adopt lower winding speed and smaller winding tension, avoid yarn strength loss, reduce elongation and keep elasticity.

    The rotary speed of the grooved drum is 2200 r/min and the tension tray is 3.92 cN.


    6, warping


    CGGAll4 high speed warping machine is adopted. This machine is easy to operate, excellent in performance, uniform in tension control and good in winding evenness.

    Speed 500m/min, tension plate 4.9cN.


    7. Sizing


      

    Technology

    The principle of "low speed, medium tension, penetration and overlap" is adopted.


    1) slurry formulation: PVA 1799 is 37.5kg, modified starch 30 kg, PVA 205 is 25kg, QL 89 is 15 kg, oil agent 3 kg.


    2) sizing process: sizing rate 13%, moisture regain 5% ~ 7%, elongation l%, slurry viscosity 10 ~ 12s. speed 30 ~ 30m/min.


    8. Weaving


    According to the fabric pattern design.

    The process adopts the principle of "small double opening, big tension, high back beam and early closure", and appropriately adjusts the height of the 1 and 2 piece heald frames to be 2mm higher than the 3~7 heald frames, so that warp can be healed when the looms are healed.

    Fabric

    Stratification and large machine tension can make the shed clearer, reduce the broken ends and improve weaving efficiency.

    The loom speed is 400 r/min, the tension is 2744N, the front and rear beam is 1102mm, and the opening time is 310.

    The rod is adjusted 25 to 95ram.

    The height of the heald frame is 100 ~ 103mm.

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