disposable clothing fashion|Comparative analysis of standard indicators

The "protective performance" of medical protective clothing is the most important performance requirement, mainly including liquid barrier, microbial barrier and barrier to particulate matter. China first promulgated the national mandatory standard of technical requirements for medical disposable protective clothing in 2003 and revised it in 2009. The performance indicators specified in gb19082-2009 technical requirements for medical disposable protective clothing are relatively rich. At present, the more common international standards for medical protective clothing are the National Institute of occupational safety and health (NIOSH) standard of the United States and the en standard of the European Union. The following is a simple comparison of the protective performance in the medical protective clothing standards of China, the United States and Europe.

Index analysis

(1) In the world, disposable non-woven (non-woven) materials are basically used to make medical protective clothing. There are certain differences in the focus, product performance requirements and test methods of protective clothing indicators in various countries. Due to different test methods, the index requirements of key items cannot be simply compared according to the data.

(2) In gb19082-2009 technical requirements for medical disposable protective clothing, the key index filtration efficiency is not mentioned in other national standards. However, some key indicators such as "microbial penetration, anti pollutant penetration and other test items are not involved, and there are requirements that the United States and EU standards should not pass through.

(3) In addition to the requirements of key indicators and physical safety during use, NFPA 1999 not only requires the breaking strength of first-aid medical protective clothing, but also requires its tearing, seam, top breaking, puncture and other strength, as well as the overall thermal comfort of first-aid medical protective clothing. GB 19082 only considers the breaking strength of materials in key parts of protective clothing and surgical clothing, and does not make requirements for tearing and bursting, so there are certain risks in use.

(4) In terms of requirements related to wearing comfort, the focus of Sino US and European standards is different. Chinese standards have requirements on moisture permeability, while American standards pay attention to thermal performance requirements.

(5) American protective clothing standard ANSI / AAMI Pb 70:12 divides the isolation ability of protective clothing into four levels. Among them, the products with the highest protection level shall pass two key test standards: ASTM F1670 (synthetic liquid penetration) and ASTM F1671 (virus penetration). It needs to pass the ASTM F1670 test at least to meet the minimum standard of Chinese national standard medical protective clothing.

(6) The European standard protective clothing consists of two sub standard systems, the anti infection en14126 standard and the anti gas, liquid and solid particle penetration type sub standard. According to different objects for protection, the European standard protective clothing is divided into six types: type 1 and type 2 for gas protection, type 3 / 4 / 6 for liquid protection, type 5 for solid and aerosol particle protection and tear strength of clothing. The anti synthetic blood penetration test of European standard protective clothing refers to the standard ISO 16603. The standard divides the anti synthetic liquid penetration test level of protective clothing into 6 levels, with the highest level of 6. Class 2 of ISO 16603 and class 2 of Chinese national standard are both 1.75kpa. The European standard protective clothing must have the words en14126 and at least reach type4 to meet the national standard.