Abstract: A knit fabric production method includes a step of producing a knit fabric K1 from an untwisted yarn Y0 while producing the untwisted yarn Y0 by disposing a fiber bundle FB around a linear core member CP formed of a soluble polymer, falsely twisting the fiber bundle FB by using an air flow swirling in a predetermined first direction and simultaneously causing open end fibers OF to adhere to an outer circumferential surface of the falsely twisted fiber bundle FB by using an air flow swirling in a second direction opposite the first direction, and untwisting the falsely twisted fiber bundle FB.

Abstract: A knit fabric production method includes a step of producing a knit fabric K1 from an untwisted yarn Y0 while producing the untwisted yarn Y0 by disposing a fiber bundle FB around a linear core member CP formed of a soluble polymer, falsely twisting the fiber bundle FB by using an air flow swirling in a predetermined first direction and simultaneously causing open end fibers OF to adhere to an outer circumferential surface of the falsely twisted fiber bundle FB by using an air flow swirling in a second direction opposite the first direction, and untwisting the falsely twisted fiber bundle FB.

Abstract: A quality control system in a material processing mill. The mill may include several different processing machines for performing several different processing steps to produce several different intermediate products. Each processing machine is provided with a sub-processor for monitoring production information associated with the processing machine and quality information associated with the intermediate product produced by the processing machine. The quality and production information from the various sub-processors are directed to a main processor, which records a history of the processing of the various intermediate products.