A kind of method for the same color dyeing of polyester-cotton fabric with indigo dye

Abstract

The invention discloses a union dyeing method of a polyester-cotton fabric with indigo dye. The polyester-cotton fabric is dyed through the indigo dye in a two-bath two-step dyeing manner. The method including following steps: adding the indigo dye, sodium hydrosulfite and sodium hydroxide to a dye bath, increasing a temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, adding a carrier and sodium chloride, putting the polyester-cotton fabric into the dye bath, increasing the temperature to 80-100 DEG C and maintaining the temperature for 20-90 min, adding the indigo dye, the sodium hydrosulfite and the sodium hydroxide to another dye bath, increasing the temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, putting the dyed polyester-cotton fabric into the dye bath, increasing the temperature to 20-60 DEG C and maintaining the temperature for 30-60 min, and finally carrying out a water-washing process, a soaping process, a water-washing process and a drying process, or a drying process by air, to the dyed fabric. By means of the two-bath two-step dyeing method, the polyester-cotton fabric is dyed so that polyester and cotton fabric have a relative good identical color ability and a satisfactory dyeing depth can be achieved. The method is simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and relates to a method for dyeing polyester-cotton blended or interlaced fabrics with indigo dyes, especially capable of realizing better homochromaticity and higher dyeing depth of polyester-cotton indigo-dyed fabrics. Background technique [0002] Denim clothing originated in the United States. At first, denim clothing appeared to solve the problem of weak pants, but with the development of denim clothing, it has been favored by people as a fashion. With the improvement of people's quality of life, the requirements for clothing are also constantly increasing, requiring the development of denim clothing towards diversification, personalization, and functionalization. Polyester fabrics have excellent shape retention and wrinkle resistance, and have excellent "washable and wearable" properties. Cow-polyester-cotton jeans made of polyester are wide and wrinkle-free, durable and beauti...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that when dyeing polyester-cotton blended or interwoven fabrics, cotton fabrics need to be dyed under low temperature conditions while polyester needs to be dyed under high temperature conditions. Pure cotton denim fabric has dull surface, single color, poor shape retention, wrinkle resistance, poor fastness, and no durability. Provide a two-bath two-step method to dye polyester and cotton, so that polyester and cotton fabrics can obtain good same color Durability and satisfactory dyeing depth, soaping and rubbing fastness of dyed fabrics are greatly improved compared with pure cotton denim fabrics