The flat blanket pre-shrinking machine is a special knitting material shaping and finishing equipment. The knitted fabric is crocheted by coils. After the yarn is pre-treated, dyed, washed, etc., the coil is radially stretched. The length is increased, and the weft coil shrinks in size. If it is directly finished with a loose dryer, although part of the deformation is restored, some internal stress remains in the interior of the fabric. When the knitted fabric is wetted again, the length of the fibers and the yarn (line) is shortened due to the relaxation in the inner portion, and the fabric is shrunk.
The flat blanket pre-shrinking machine has unique requirements and has become an energy-saving and environment-friendly finishing equipment. It solves the old-fashioned blanket fixing process and is difficult to achieve the effective purpose of pre-shrinking. It can only be used as a stereotype treatment. And the use of the damper type pre-shrinking machine, the softness and fullness of it is difficult to meet the requirements of high-end underwear, etc., thereby improving the dimensional stability of the knitted fabric, the cloth surface is flat, and the residual shrinkage rate is low.
The fabric is fed into the cloth at a low tension in the middle of the flat relaxation state, and the fabric is hung on the needle chain of the tenter frame through the pinch wheel into the tenter zone, and the fiber is swollen through the steam humidification zone to have a certain plasticity. It is prepared for wetting, and the tenter is stretched to make the lateral dimension relatively stable, and then the fabric is taken off the needle chain into the pre-shrinking area.
The pre-shrinking zone of the flat blanket pre-shrinking machine has two pre-shrinking drums, and the fabric is tightly squeezed and wrapped between the felt blanket and the heating drum through the expansion and contraction deformation of the blanket, and is squeezed and baked while being pressed. Drying, the fabric is obtained with good thickness and longitudinal dimensional stability, thereby achieving the effects of flat surface, stable door width, soft hand feeling and small shrinkage. The product quality is stable, the product grade and the product rate are improved, and the enterprise has increased the market competitiveness. It is the best ideal finishing equipment in the knitting industry.https://www.haida-textile.com/