The ability of the draw frame and the roving frame to clean the pile loops is not flexible, resulting in the accumulation of pile loops, which is brought into the sliver, and the drafting components of the spinning frame run poorly, such as: deformation of the upper pin, failure of the upper pin spring, and backward movement of the upper pin Etc.46. (3) Spinning process: poor drafting cleanliness of the spinning frame, accumulation of flowers in the floating area, winding of the rollers, excessive surface hair on the roving, and poor rotation of the pile roller, etc. First, because the roving is fed by two roots, the amount should not be too large to avoid spun yarn. Later, after finding the cause of the top roller, the mechanical waves were eliminated after replacing the top roller, and the groove on the surface of the top roller was observed under the fiberscope. During the test, the details exceeded the standard, but the top roller apron is good and clean. The roving machine cleans the piled flowers of the loops and the windings of the rollers, which causes defects. Equipment reasons The combed cylinders and top combs are in poor condition, with many crooked needles and broken needles, resulting in hanging flowers, poor carding and top comb spacing, which prevents the fibers from being well carded and excludes linters.; the accumulated flowers cannot be removed in time, causing flying flowers to be brought in. Gap block. The cotton blending plan dty 600D/192F of viscose should pay attention to whiteness,batch and moisture regain.5. 49. It is easily broken and formed during the process of opening, removing impurities, and carding.5g/10m, roving twist factor 100-108, rear yarn draft 1. Second, the distance between the two rovings (the distance between the two-hole bell mouths) should be optimized to achieve the best spinning effect. The formation of the wire causes damage to the breaking strength of the single fiber
