Air-permeable apped polyurethane synthetic leather and preparation method thereof

Abstract

The invention discloses an air-permeable apped polyurethane synthetic leather and a preparation method thereof. The preparation method comprises the following steps of: coating a layer of polyurethane slurry on the napped surface of a fabric base which is single-side napped dull velvet, forming a polyurethane leather film on the surface of the base fabric after the polyurethane slurry is solidified, and sequentially washing, replacing a solvent, drying and shaping to obtain a semi-finished product; carrying out directional buffing processing on the surface of the semi-finished product, and then carrying out surface postprocessing and color alteration to obtain a finished product. The air-permeable pashm-effect polyurethane synthetic leather prepared by the method disclosed by the invention has the advantages of excellent air-permeable water-proof function, appearance similar to a reversed velvet leather, higher surface velvet sense, light weight, wearing comfort and low cost, can substitute a part of reversed velvet leather products and accords with the conception of light weight emphasized by the modern industry.

Description

1. Technical field [0001] The invention relates to a functional polyurethane synthetic leather and a preparation method thereof, in particular to a polyurethane synthetic leather with air-permeable suede effect and a preparation method thereof. 2. Background technology [0002] Polyurethane synthetic leather, referred to as PU synthetic leather, is a kind of imitation leather synthetic leather that uses various base fabrics as base materials and coats polyurethane resin on the base materials to make it have various patterns, patterns, functions and handles. With the development of social economy, people's quality of life and level are improving day by day, and the grade and quality requirements for daily necessities are getting higher and higher, and the functionality of products is more pursued. Ordinary PU synthetic leather is not only heavy, but also has poor air permeability. After being made into shoes, it is bulky to wear, and the air inside the shoes cannot be exchang...

AI Technical Summary

Problems solved by technology

Ordinary PU synthetic leather is not only heavy, but also has poor air permeability. After being made into shoes, it is bulky to wear, and the air inside the shoes cannot be exchanged with the outside world in time, which is prone to stuffy and smelly feet, which affects the lightness and comfort of wearing.

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