Polyurethane finishing method of wool fabric

Abstract

The invention discloses a polyurethane finishing method of a wool fabric. The polyurethane finishing method includes the steps of setting agent treating fluid preparation and wool fabric finishing. Setting agent treating fluids not only contain waterborne polyurethane, but also contain sodium sulfite serving as reducing agents and hydrogen bond destroying reagents, and the setting effect of the finished fabric is improved by crosslinking hydramine small molecules and polyurethane macromolecules with surface groups of wool fibers. Compared with independent waterborne polyurethane finishing in the prior art, the polyurethane finishing method has the advantage that the pleat shape preserving performance of the fabric can be improved.

Description

Technical field

[0001] The invention belongs to the technical field of fabric finishing, and specifically relates to a polyurethane finishing method for wool fabrics. Background technique

[0002] Internationally, products that can be machine-washed, tumble-dried, less ironed, and pleated resistant have become easy-care products. Wool garments with a care mark are highly competitive in the market. As an easy-care wool garment, the first thing to solve is the felting phenomenon of the fabric in the machine washing process. Secondly, the surface of the fabric is smooth after drying, and it also needs to have certain inherent pleated shape retention. However, the scaly layer structure of the wool fiber and the wet swellability of the fiber determine the shortcomings of easy felting of the wool fabric and difficulty in maintaining the shape.

[0003] Non-chlorine wool anti-felt finishing technology has become the development trend of wool anti-shrink finishing. Polyurethane has good ...