Natural dye transfer printing color paste as well as preparation method and printing method

Abstract

The invention provides a natural dye transfer printing color paste as well as a preparation method and a printing method. A shortcoming that damages are caused to human bodies and atmospheric environment by transfer printing in the prior art is overcome. The color paste comprises the following components in percentage by mass: 2-23 % of natural plant dye, 35-50 % of acrylic resin, 0.3-0.5 % of plasticizer and 26.5-62.7 % of solvent. The printing method of the natural dye transfer printing color paste comprises the following steps: (1) preparation of the natural dye transfer printing color paste; and (2) fabric printing. The natural plant dye has no affinity with a film; during transfer printing, high transferring efficiency and fastness is qualified through an effect of a natural modifying agent; the natural plant dye has a soft and plain color; through a transfer printing process, a layered plate printing effect can be obtained; the transfer printing process is pollution-free and the dye, the solvent, an auxiliary and a fabric are all modified into environment friendly products; and moreover, transfer printing paper is not needed and forest resources are protected.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing, and in particular relates to a natural dye color paste for transfer printing and a transfer printing method thereof. Background technique [0002] Transfer printing in the traditional sense is carried out on hydrophobic fibers such as polyester by using the characteristics of high-temperature sublimation of disperse dyes. It is to attach the fabric to the thermal transfer printing paper printed with the pattern, and press it on the heat transfer machine, and the pattern on the paper is transferred to the fabric. The outstanding advantages of this printing method are that it does not consume water, does not produce sewage, and the pattern is fine, and it can print patterns with photo effects. However, this method cannot print fabrics of natural fibers such as cotton, because there is no binding force between these fabrics and dyes that can be transferred by heat. In order to realize ...

AI Technical Summary

Problems solved by technology

However, considering the affinity between water-soluble dyes and paper, paper must be treated with a release agent when using paper as a substrate. Even so, such cold transfer printing still has the problem of low transfer rate.

[0004] In order to protect forest resources, some people use hydrophobic film as a transfer medium, disperse the dye in a strong polar organic solvent, and use its lower latent heat of vaporization to make the printing outline clearer, but at the same time it brings the problem of VOCs. Cause damage to human body and atmospheric environment