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Is there a standard for melt blown cloth for masks now?

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Is there a standard for melt blown cloth for masks now?

2021-05-14 09:48:04
Recently, non-standard meltblown non-woven fabrics(PP Meltblown Filter Vendor) for masks (hereinafter referred to as "meltblown fabrics for masks") have become a hot topic. Seeing individual media add oil and vinegar and stir up, it seems that the lack of standards for masks is everything. The fact that the root of the problem is the source of the problem is extremely stressful for all parties involved. In the last article "Standards in the fight against the epidemic", it seemed that the fifth step of the "Five Steps of Standard Anti-epidemic"-"Standards in the Industry Chain: Calmness" has become a good wish. Therefore, today I dare to talk about whether "melt blown cloth for masks" should be a standard.

Is there a standard for melt blown cloth(Meltblown Filter Manufacturer) for masks now?

National Bank Standard

After investigation, at the national bank standard level, there are 2 directly related standards for melt blown cloth. See the table below:

PP Meltblown Filter Vendor, Face Mask Fabric Factory, Meltblown Filter ManufacturerPP Meltblown Filter Vendor, Face Mask Fabric Factory, Meltblown Filter Manufacturer

FZ/T 64034-2014 "Spunbond/Meltblown/Spunbond (SMS) Nonwoven Fabrics" is suitable for SMS products that use polypropylene as the main raw material and are reinforced by hot-rolling bonding. This product is not used to produce masks, but to make protective clothing fabrics. Because SMS nonwovens are directly used as protective clothing fabrics, the manufacturing process of protective clothing is different from masks. In this epidemic, the standard of protective clothing fabrics did not become a hot issue.

FZ/T 64078-2019 "Meltblown Nonwoven Fabric" is suitable for nonwoven fabrics made by consolidating fiber webs manufactured by meltblown forming method through one or more technologies. Melt blown cloth for masks is one of the small categories. Therefore, FZ/T 64078 is suitable for melt blown cloth for masks(Face Mask Fabric Factory). However, because meltblown cloth is a basic textile material with a wide range of applications, it can be used as air filtration and liquid filtration materials, as well as heat preservation, oil absorption, and sound-absorbing materials. As a basic raw material standard, FZ/T 64078 cannot provide very detailed classification requirements for product performance for various purposes. It only addresses the mass per unit area, mechanical strength, and elongation of (10-150) g/㎡ melt blown cloth. Basic properties such as rate and appearance are stipulated. Regarding the thickness, filtration efficiency, air permeability, flame-retardant performance, limit of restricted (forbidden) substances of the meltblown cloth used as air filter materials, the thermal resistance and air permeability of thermal insulation materials, the oil absorption time and oil absorption volume of oil-absorbing materials, etc. Indicators, the standard only proposes to be implemented by both the supplier and the demander in accordance with the contract. Melt blown cloth for masks is only a small category of air filtration materials, and it is even more impossible to specify in this standard. On the other hand, the meltblown cloth is only the filter layer of the main part of the mask, and it is not directly applied like the SMS nonwoven fabric for protective clothing, which makes the relationship between the meltblown cloth for masks and the performance of the mask more complicated. Some dominant companies have developed their housekeeping skills after years of exploration after SARS. It is conceivable that companies that switch to new masks will encounter meltblown cloth problems. As a result, "there is no standard for melt blown cloth for masks" has gradually evolved into a hot issue.