METHOD FOR PRODUCING HEAT-RESISTANT SPUN YARN

摘要

PROBLEM TO BE SOLVED: To provide a technique of manufacturing a heat-resistant spun yarn having improved elasticity and a woven fabric.SOLUTION: The method for producing a heat-resistant spun yarn having improved elasticity includes: a production process of a single yarn for twisting heat-resistant fibers in a first direction by the number of twists within a predetermined range; a first heat setting process for applying heat at a first temperature within a predetermined range to the single yarn produced by the single yarn production process; a doubling yarn production process for doubling at least two single yarns processed in the first heat setting process and twisting in the first direction by a first number of twists within a predetermined range; a second heat setting process for applying heat at a second temperature within a predetermined range to a doubling yarn produced in the doubling yarn production process; a reverse twist process for twisting the doubling yarn processed in the second heat setting process in a second direction that is opposite to the first direction by a second number of twists within a predetermined range; and a third heat setting process for applying heat at a third temperature within a predetermined range to the doubling yarn processed in the reverse twist process.