- 作者: Emily
- 来源:
- 日期: 2019-03-24
- 浏览次数: 1732次
What role does pre-shrinking play in printing and dyeing?The fabric will shrink and deform during the dyeing and finishing process. The improvement of the fabric shrinkage measure is to end the dyeing and finishing process, and try to make the warp yarn of the fabric have the opportunity to retract, to restore the balanced bending state of the yarn, and reduce it later. The purpose of shrinking. Therefore, it is an economically significant work to make the fabric work through the machine and the shape is stable and amorphous. This finishing method is called mechanical pre-shrinking finishing, and the equipment used is a pre-shrinking machine (or anti-shrinking machine).
The pre-shrinking machine uses a compressible elastic material such as felt, rubber blanket or the like as a medium for compressing the fabric. Since the elastic material has strong stretch characteristics, if the plastic fiber fabric is pressed against the surface of the elastic material, It will also have the effect of lengthening or shortening.
The main mechanism of the pre-shrinking finishing machine is a ring-shaped seamless felt or rubber blanket wrapped on the feeding roller to form a stretched part of the elastic material, and then the annular felt or rubber blanket is turned into a heating and baking. On the drum or pressure roller. Amisfelting's felts do a good job of this function, and the specific dimensions and materials are tailored to the needs of the machine.