Virus penetration blocking operating coat film

Abstract

The invention discloses a virus penetration blocking operating coat film which comprises a virus penetration blocking thermoplastic polyurethane film subjected to thermal compression bonding on upperand lower surfaces of a medical non-woven fabric, wherein the virus penetration blocking thermoplastic polyurethane film comprises the following components in percentage by mass: 82-85% of thermoplastic polyurethane, 6-10% of graphene, 7-9% of nano-silica and 1-1.5% of nano-silver powder; and the thermoplastic polyurethane comprises the following preparative raw materials: 50-55 parts of polyisocyanates, 20-25 parts of polyether diol, 18-22 parts of chitosan, 15-18 parts of ethylene glycol and 4-6 parts of a stabilizer. According to the manner, the virus penetration blocking operating coat film disclosed by the invention is of a sandwich structure and has the characteristics of being excellent in virus blocking uniformity, high in protection level, excellent in air and moisture permeability, excellent in environment friendliness and the like.

Description

technical field [0001] The invention relates to the field of polyurethane films, in particular to a film that blocks viruses from penetrating surgical gowns. Background technique [0002] With the continuous improvement of living standards, people's requirements for medical products are getting higher and higher, and the requirements for infection control during surgery are also constantly improving. From the original protection of patients only to the protection of both patients and doctors and nurses The concept of personnel has changed, and the performance of surgical gowns used in the operation has become one of the hot spots that people pay attention to. [0003] At present, there are three main types of surgical gown fabrics that are more common in clinical practice: ordinary non-woven fabrics, flash evaporation one-time forming filter materials, and coated fabrics. Among them, the protective efficiency of surgical gowns made of ordinary non-woven fabrics is only about...

AI Technical Summary

Problems solved by technology

[0003] At present, there are three main types of surgical gown fabrics that are commonly seen clinically: ordinary non-woven fabrics, flash evaporation one-time forming filter materials, and coated fabrics. Among them, the protective efficiency of surgical gowns made of ordinary non-woven fabrics is only about 40%, which cannot meet the minimum requirements of the national standard. Requirements: The filter material made by DuPont of the United States by one-time flash evaporation has good protection performance, but the protection uniformity of the fabric is not good. Some parts of the same fabric have high filtration efficiency, but some parts are very low; coated fabrics The protective effect of the surgical gown is better, but its air permeability and moisture permeability are poor, which cannot meet the comfort requirements, and the general coating is not degradable, which does not meet the environmental protection requirements