▎ 摘　　要

NOVELTY - Composite cloth comprises a polyolefin microporous film and non-woven fabric and/or woven fabric combined with the polyolefin microporous film, the polyolefin microporous film is prepared by co-extrusion process: using a double-screw extruder to melt and extrude at least two different functions of polyolefin, traction by casting roller, cooling, heat treatment to form at least two layers of co-extrusion film, at least one layer of the at least two layers of co-extrusion film is high-strength polyolefin co-extrusion film and the co-extrusion film by stretching, heat setting treatment to obtain the polyolefin microporous film. USE - The composite cloth is useful for preparing a protective outer cover, namely medical protective clothing, tent, Jackets and medical packaging bags (claimed). ADVANTAGE - The composite cloth: has good thermal stability and can meet the needs of high-temperature steam sterilization; can inherits the advantages of battery diaphragm air permeability, moisture permeability, barrier properties, high mechanical strength, softness and wrinkle resistance, and is a medical protective clothing that provides a high-performance composite material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing cloth, comprising using the double-screw extruder to melt and extrude at least two kinds of polyolefin with different functions, drawing by the casting roller, cooling and performing heat treatment to form at least two layers of co-extrusion film, where at least one layer of the at least two layers of co-extrusion film is high strength polyolefin co-extrusion film, the co-extrusion film by stretching, heat setting treatment to obtain the polyolefin microporous film, compounding the polyolefin microporous film with the non-woven fabric and/or woven fabric by thermal composition or adhesive compounding to obtain the composite cloth.