Four indicators of non-woven inspection

Of course, since there is no clear standard, Byrne engineers summed up the previous experience in mask testing and non-woven testing, and proposed several important testing indicators, namely filtration efficiency, respiratory resistance, hygiene indicators, and toxicology tests. project.

I. Filtration efficiency

As we all know, filtration efficiency is a key indicator for the quality assessment of masks. This is also one of the important quality standards for non-woven fabrics, so referring to relevant standards, we recommend that the bacterial filtration efficiency of non-woven masks for masks should be no less than 95%, and the particle filtration efficiency for non-oily particles should be no less than 30%.

Second, breathing resistance

Respiratory resistance, when people wear masks, the size of the impact on breathing. Therefore, the breathing resistance of the non-woven fabric of the mask determines the breathing comfort when wearing the mask. The indicators we recommend here are that the inspiratory resistance should be ≤350Pa, and the expiratory resistance should be ≤250Pa.

Three, health indicators

Hygiene indicators are naturally another important key indicator of non-woven masks. Here we recommend testing items mainly for initial contamination bacteria, total bacterial colonies, coliforms, pathogenic pyogenic bacteria, total fungal colonies, Escherichia coli, Staphylococcus aureus, Candida albicans, ethylene oxide residues, etc.

IV. Toxicology test

Skin irritation test is mainly a protective test for people allergic to some materials. Refer to the regulations in GB15979. The skin irritation test of mask non-woven fabrics is mainly to cut a sample of a suitable area in a cross-section method, soak it with normal saline and stick it on the skin, and then cover it with a patch for testing.

Wenzhou Xinyu Non-woven Fabric Co., LTD.'s has been able to achieve excellent performance in an extremely competitive industry.

The best for flame retardant non woven fabric is one that works best for your needs and what you can support in your home. Among Wenzhou Xinyu Non-woven Fabric Co., LTD.'s diversified list of products at different price ranges, you will surely find your one with high quality. make your choice at XINYU Non-woven!

Technology upgrades can pay for themselves quickly by improving CUSTOMIZING and enabling employees to accomplish more in less time. It may be time to focus on non woven fabric supplier to ensure they run smoothly and efficiently.