Method for producing polyester cotton blended spinning latitudinal elastic fabric

Abstract

This invention provides a production method of stretch-yarnless cotton-polyester blended latitudinal stretch fabric. The production method successively comprises the working procedures as follows: manufacture of grey cloth, sewing of the lining side of the grey cloth, singeing of the grey cloth, desizing, sizing, coloration, preshrinking and trimming inspection. After the desizing procedure and before the sizing procedure, a slack mercerizing procedure is conducted; after the coloration procedure and before the preshrinking procedure, a slack cloth-ironing procedure is conducted. By using thetrimming method, before the singeing and desizing procedures, the pick count of the cotton-polyester blended fabric is small, thereby being prone to be back-shrunk. Trough the sizing procedure, the width can be shrunk and the capillary effect is increased, then through the slack mercerizing procedure, by slackly piling in a J-shaped box and mercerizing in the condition free from latitudinal tension, the width can be sufficiently shrunk and get an excellent stretch effect. In the procedure of slack cloth-ironing, polyurethane elastomer is added to the cotton-polyester blended fabric under the condition free from latitudinal tension, and through sanforizing cotton-polyester blended fabric gets higher longitudinal elasticity.

Description

technical field [0001] The invention relates to a production method of a fabric, in particular to a production method of pretreatment, dyeing and post-finishing of polyester-cotton blended fabric without stretch yarn. Background technique [0002] At present, there is a large demand for elastic fabrics in the market, but most elastic fabrics containing spandex yarns are not resistant to high temperature, heat and concentrated alkali, it is difficult to remove creases during processing, and it is difficult to achieve the specified elasticity and dimensional stability. After the elastic gray fabric is off the machine, its shrinkage in the width direction can be as high as 40-60%. During processing, it is very easy to cause wrinkles and curls on the fabric surface, and the production is difficult. Spandex-containing elastic fabrics will be attacked by alkali and available chlorine, which will cause the elastic fibers to break bonds and hydrolyze, resulting in a decrease in elas...

AI Technical Summary

Problems solved by technology

[0002] At present, there is a large demand for elastic fabrics in the market, but most elastic fabrics containing spandex yarns are not resistant to high temperature, heat and concentrated alkali, it is difficult to remove creases during processing, and it is difficult to achieve the specified elasticity and dimensional stability

Since the elastic gray fabric shrinks back as much as 40-60% in the width direction after it is off the machine, it is very easy to cause wrinkles and curls on the fabric surface during processing, making production difficult

Spandex-containing elastic fabrics will be attacked by alkali and available chlorine, which will cause the elastic fibers to break bonds and hydrolyze, resulting in a decrease in elasticity and strength, and high temperature will also lose strength and elasticity, so its processing conditions are greatly limited, and many functional finishes are not suitable for Spandex stretch fabrics, such as wrinkle-resistant finishing, water-repellent, oil-repellent, stain-repellent finishing

Generally, polyester-cotton blended fabrics are resistant to high temperatures, suitable for tooling fabric processing, and have no strict requirements on processing conditions. They are suitable for all finishing processes. The market demand is large, the price is cheap, the color is rich, and the hand feels soft, but the disadvantage is that the elasticity is poor. , uncomfortable to wear, unattractive, and low-grade