Waterproof air-permeable artificial leather

Abstract

The invention discloses a waterproof air-permeable artificial leather which comprises a waterproof layer and an artificial leather layer, wherein the waterproof layer is bonded on the upper part of the artificial leather layer; the surface of the artificial leather layer is provided with vent holes; the waterproof layer is composed of PP (polypropylene) spunbonded nonwoven fabrics and a PE (polyethylene) high-polymer waterproof air-permeable membrane; and the PE high-polymer waterproof air-permeable membrane is bonded between the PP spunbonded nonwoven fabrics. The PP spunbonded nonwoven fabrics in the waterproof layer of the waterproof air-permeable artificial leather have the main functions of increasing the tensile force and hydrostatic pressure and protecting the middle layer PE high-polymer waterproof air-permeable membrane; the micropore diameter of the PE high-polymer waterproof air-permeable membrane is 0.2-10 micrometers, and the porosity is up to 80% or above, i.e. more than one billion of micropores exist in one square centimeter; since the micropore diameter is 1 / 5000-1 / 20000 of the water drop diameter and is 700 times or so of the water vapor molecule diameter, the PE high-polymer waterproof air-permeable membrane can prevent water drops from passing through and enable water vapor molecules to pass through freely, and sweat vapor is discharged to the outside by utilizing temperature difference between the cloth inside temperature and outside ambient temperature and the humidity difference.

Description

technical field [0001] The invention belongs to the technical field of artificial leather, in particular to a waterproof and breathable artificial leather. Background technique [0002] Artificial leather is a plastic product that looks and feels like leather and can be used instead of it. It is usually made of fabric as the base, coated with synthetic resin and various plastics. With the development of high technology at home and abroad and the application of advanced technology and equipment, my country's artificial leather and synthetic leather industry have made fundamental qualitative leaps in industry management, technical level, and product grades. Artificial leather and synthetic leather have developed into an important part of the daily consumer product industry It is one of the largest industries in the world, and it has entered the ranks of the world's major powers simultaneously with the entire processing industry. It is one of the world's largest producers, cons...

AI Technical Summary

Problems solved by technology

The current artificial leather basically does not have the function of waterproofing, and it is easy to mold and deteriorate when traveling in rainy days, which affects the quality of artificial leather; moreover, the current artificial leather has poor air permeability, and it is not breathable when worn on the body, which is very uncomfortable.

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