The invention discloses a manufacturing method of ultra-long natural bamboo fibers for automotive upholstery, belongs to the technical field of
plant fiber production, and solves the problems that the natural bamboo fibers in the existing preparation method are short in length, poor in flexibility and inapplicable to a
textile movable
carding and paving production process of the automotive upholstery. The method comprises the following steps of
slicing bamboos into long and thin strips, removing
lignin and hemicelluloses in the bamboos,
softening the bamboos, performing defibering treatment on natural bamboo fibers, performing secondary
softening treatment on the natural bamboo fibers through soft
sesame oil,
carding primary fibers, performing high-temperature flat pressing and shaping, finally performing fine
carding on the ultra-long natural bamboo fibers, and the like. According to the super-long natural bamboo
fiber obtained through the method, the length of the super-long natural bamboo
fiber ranges from 12 cm to 15 cm, the
diameter of the fiber is smaller than 60 microns, the yield is larger than 75%, the key step is a fine carding technology, the tooth angle of a cylinder of a
combing machine is required to be larger than 130 degrees, crochet hooks on a working roller are required to be arranged in a matrix mode, the tooth height of the crochet hooks is larger than 5 cm, and the working angle is smaller than 30 degrees.