The invention relates to a production method of textiles, in particular a production method of cotton
polyester interwoven spandex core-spun elastic fabric. The cotton
polyester interwoven spandex core-spun elastic fabric comprises cotton,
polyester and spandex. Sixteen threads of cotton are woven in the warp direction, and 150D low-elasticity interlaced
yarn and 70D spandex coated
yarn are woven in the weft direction. The
dyeing process of the cotton polyester interwoven spandex core-spun elastic fabric sequentially includes the steps of fabric turnover, scouring retreating, single-surface singeing,
oxygen bleaching, shaping, mercerizing, double
dyeing of pad
dyeing and dyeing in the same color and finishing. A scouring and bleaching combined
production line is adopted in the steps of scouring retreating and
oxygen bleaching, the fabric is subjected to six-latticed countercurrent flattening washing prior to rolling pressure so as to control the
moisture content to be 45-55% and subjected to padding in
oxygen-bleaching liquid for fabric bleaching; the dyeing process further includes dipping
flame-retardant treatment after the finishing process, namely putting the fabric into a
vacuum pressure tank to be vacuumized and enabling vacuum degree of the
vacuum pressure tank to be from -0.015MPa to -0.025Mpa, and adding a
fire retardant into the tank and enabling the pressure to be increased to from 0.1MPa to 0.8Mpa. The fabric is stable in size after being washed, needless of ironing and energy saving in production, and
flame-retardant safety is achieved.