What material is the medical protective suit made of?

Types of medical protective clothing

At present, in addition to head, hand and foot protective products for medical personnel used in hospitals, trunk protection mainly includes isolation clothing, operating clothing and medical protective clothing.

Isolation clothing refers to clothing worn by medical staff when they contact patients or when family members visit patients.

An operating coat is a specially designed garment worn in the operating room;

Protective clothing refers to the clothing worn by personnel in medical emergency, infectious disease area, electromagnetic radiation area and other special areas.

According to the requirements of different use conditions, the three products should respectively achieve different performance requirements.

Among them, isolation clothing is the first kind of medical equipment, the performance requirements are relatively minimum. Currently, there is no industry standard or national standard in our country.

Operating gowns and protective clothing are the second type of medical equipment. In the YY/T 0506 series standard, a performance study method for operating clothing was established, and a technical requirement for medical disposable protective clothing was established in GB 19082.

Currently, the standards of reusable medical protective suits have not been established in our country. Here we mainly introduce the medical disposable protective clothing that meets the requirements listed in GB 19082, which is also the most needed protective clothing in this outbreak. The product is mainly used by medical workers who may come into contact with the blood, body fluids, secretions, and airborne particles of potentially infected patients.

Materials for medical protective clothing

Protective clothing is usually made of composite materials, such as polyester or polypropylene spun mesh nonwoven fabric and breathable microporous film or other nonwoven fabric, or spunlaced nonwoven fabric and breathable microporous film composite, or wood blade composite spunlaced nonwoven fabric. At present, polythene flash spinning nonwovens and spunbond/melt-blowout/spunbond (SMS) or spunbond/melt-blowout/melt-blowout/spunbond (SMMS) composite nonwovens are widely used with microporous films, and after the "three and one resistance" (water, blood, alcohol, anti-static) function finish.

Nonwovens:

A sheet, mesh or mat made of fibers arranged in a specified direction or at random and combined with each other by rubbing, holding, or gluing, or a combination of these methods, excluding paper, woven fabrics, knitted fabrics, tufted fabrics and wet-shrink felt products (GB/T 5709--1997 Terms for Textile nonwovens).

To put it simply: it is not a yarn interwoven, braided together, but the fiber directly through the physical method of bonding together, so, nonwoven fabric is not out of a root of thread. Performance of medical protective clothing

Performance requirements for protective clothing materials, including protective, wearable, and hygienic.

To put it simply, protective clothing should not only drain moisture and wear freely, but also protect medical staff from infection of viruses, bacteria and other pollutants during diagnosis and treatment, resist the invasion of water, alcohol and blood, and effectively anti-static, and even prevent the entry of dust.

To be specific:

(1) Protection requirements have liquid barrier function, the key parts of protective clothing (left and right front flap, left and right arm and back position) impervious water, hydrostatic pressure is not less than 1.67kPa; Anti-synthetic blood penetration shall not be lower than level 2, that is, synthetic blood shall not penetrate after acting on protective clothing at 1.75kPa for 5 minutes; The outer side of the protective suit shall be waterlogged at least level 3. This technical specification is to prevent the patient's blood, or surgical disinfectant, flushing liquid and other liquids through the protective clothing, contaminating medical workers.

② Protective clothing should have the performance of preventing the penetration of micro particles, and the filtration efficiency of non-oily particles at the key parts and joints of protective clothing should not be less than 70%. This is to prevent the invasion of virus-carrying particles, such as spitting, and the seams of protective clothing must be sealed to block pinholes left by sewing.

(3) The wear requirements of protective clothing include sufficient strength and dimensional stability. Tensile test, breaking strength is not less than 45N, elongation at break is not less than 30%. This technical index is to ensure the physical properties of clothing, so that it is not easy to damage.

④ In terms of wearing comfort of protective clothing, the moisture permeability of protective clothing material should not be less than 2500g/m2·d. This technical index is to ensure that the wearer's sweaty heat is discharged in time.

The safety and hygiene of protective clothing requires non-toxic, no skin irritation, anti-mold breeding.

Protective clothing is disposable, economic requirements in order to ensure the protection performance at the same time, as far as possible to reduce the cost.