A kind of high light transmittance medical protective film and preparation method thereof

Abstract

The invention relates to a composite plastic film, particularly to a medical protective film with high transmittance. The medical protective film comprises an upper-layer film, a middle-layer film and a lower-layer film which are sequentially adhered together, wherein the upper-layer film and the lower-layer film consist of the same components; the middle-layer film consists of 10-40 parts of linear low-density polyethylene, 10-40 parts of low-density polyethylene, and 20-80 parts of metallocene medium-density polyethylene or metallocene high-density polyethylene; the upper-layer film consists of the components of 10-30 parts of metallocene medium-density polyethylene or metallocene high-density polyethylene, 32-52 parts of low-density polyethylene, 30-50 parts of linear low-density polyethylene, 0.5-0.8 part of zeolite and 0.01-0.2 part of a slipping agent. According to the medical protective film with high transmittance, provided by the invention, after the film is disinfected for 8 hours and when the disinfected film is taken out and unfolded, the overlapped parts are not mutually adhered and are easy to separate, and the surface is smooth; besides, the film has higher transmittance.

Description

technical field [0001] The invention relates to a plastic composite film, in particular to a medical protective film with high light transmittance and a preparation method thereof. Background technique [0002] Hospital articles are divided into high-risk, medium-risk, and low-risk categories according to the degree of harm to the human body after contamination by articles. The high-risk articles refer to medical equipment and articles that will cause serious harm after being contaminated by microorganisms, such as surgical instruments and supplies. , Infusion and blood transfusion equipment, etc. The principle of the hospital is that all high-risk items must be sterilized by high-efficiency disinfection methods to make their sterilization index reach 10- 6 (Even if the survival probability of microorganisms is less than 10- 6 ). Disinfectants commonly used in high-efficiency disinfection methods include glutaraldehyde, formaldehyde, peracetic acid, hydrogen peroxide, eth...

AI Technical Summary

Problems solved by technology

[0004] However, when the medical film is actually sterilized, the film to be sterilized is folded and placed in an airtight container, and ethylene oxide gas is introduced into it. After 8 hours of disinfection, when the film is taken out and unfolded, it is found that the overlapping parts of the medical film Adhere to each other, it is not easy to unfold, if the external force is applied to separate quickly, the original smooth surface of the film will become rough, which does not meet the requirements of surgery

[0005] In the actual use of medical films, doctors check the lens of the instrument through the medical film, and have high requirements for the light transmittance of the medical film, but the light transmittance of the existing medical films is generally relatively low

Images