Mixed spinning process for kapok and polylactic acid

The invention provides a mixed spinning process for kapok and polylactic acid. The mixed spinning process comprises the following steps that an addition agent is sprayed to kapok fibers and is balanced for 10-20 h in the environment with the temperature ranging from 60 DEG C to 80 DEG C, and addition agent mixed liquor is dried on the surfaces of the kapok fibers and reacts so that pretreated kapok fibers can be obtained. The addition agent is prepared from 30-50 parts of lactic acid low polymer, 10-20 parts of starch, 0.1-2 parts of a chain extender and 28-59.9 parts of water. The treated kapok fibers and polylactic acid fibers are mixed uniformly and treated through multiple spinning steps, so that kapok and polylactic acid composite shell fabric is obtained. The problem that a spinning property of the kapok fibers is poor is solved, the starch is utilized for forming more burrs on the surfaces of the kapok fibers to increase cohesive force, the components such as the lactic acid low polymer and the chain e