Patent ID: 10731275

Abstract:
The present application provides a manufacturing method and a spinneret assembly that includes a nozzle body, an outer spinning solution channel formed inside the nozzle body, and at least one inner spinning solution channel formed inside the nozzle body. A nozzle outlet formed at an end of the nozzle body is immersed in a solidification liquid. The outer spinning solution channel includes an outer liquid outlet, and the at least one inner spinning solution channel includes an inner liquid outlet. The outer liquid outlet and the inner liquid outlet communicate with the nozzle outlet and are confluent at the nozzle outlet. A diameter of the inner liquid outlet is smaller than a diameter of the outer liquid outlet. An outer-layer dope spinned from the outer liquid outlet covers an inner-layer dope spinned from the inner liquid outlet so as to generate a solid filamentary fiber with multi-layer materials.