Category Archives: Blog

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Can Face Mask With Respirator/ Fliter Be Anti-virus?

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Category : Blog , Tips & Tricks

One doctor said on the SNS platform that breathing valve masks cannot be used to prevent viral infections. The reason he gave was, “It is difficult to reach the N95 protection level at the breathing valve.” This sounds reasonable. In addition, many people see pictures of doctors wearing masks without breathing valves. It is natural to think that it is safer without breathing valves. It is a pity that this statement seems reasonable, but in fact it has no scientific basis.

First of all, no matter whether it is the US FDA, CDC or NIOSH, the definition of N95 masks has never excluded the “breath valve”. On NIOSH’s page of previously certified N95 masks, we can see a large number of masks with breathing valves. Here only take some 3M products as an example.

Secondly, N95 test items are divided into salty and oily media, and the filtration efficiency of particles as small as 0.3 microns can reach 95% or more to pass the test standard. Take the LIFAair with the best protection among the mask samples we tested before as an example. The protection efficiency for 0.3um particles is more than 99%. Regardless of adult or child models, are equipped with breathing valve.

Third, the principle of breathing valve. Many people are led away because they think the breathing valve can also inhale air. On the contrary, the design of the breathing valve is very clever, similar to the air cylinder, but more delicate. When air is discharged from the mask compartment, the valve diaphragm is pushed out and opened at a certain angle to facilitate the rapid export of air and water vapor, so that it will not suffocate.

According to the previous recommendation of the US CDC, as long as it is a certified N95 mask, it is the best choice for preventing viral infections, which includes both with and without a breathing valve.

Others say that the main reason why it is not recommended to wear a breathing valve mask is to consider that if the person wearing the mask is already a virus carrier, it is not safe for the surrounding people.But in real life, no matter whether you wear a medical surgical mask with no airtightness, or a N95 mask without a breathing valve, the air we exhale cannot be without contacting the outside environment. Medical surgical masks that leak everywhere can also spread germs when they exhale.

The conclusion is that ordinary people wearing masks for breathing valves can be used with confidence, but it is not suitable for use in hospitals.

We believe that for ordinary people, as long as they are qualified N95 masks, even if they are not medical grade, they can also effectively protect against virus intrusion, and N95 face masks with breathing valves can also effectively protect against virus infections.

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What’s The Difference Between Latex Golves & Nitrile Gloves?

What’s the difference between Latex Golves and Nitrile Gloves? Are not all disposable examination gloves the same? All medical examination gloves are different, and there is a huge difference between latex and nitrile gloves. Despite frequent comparisons, latex gloves and nitrile gloves are not strict competitors. Because nitrile gloves and latex gloves have different advantages and disadvantages, they have their own scope of use. However, due to certain similarities and cross-use, many people confuse nitrile and latex. Do not confuse nitrile with latex or latex with nitrile.

1.Latex examination gloves

Latex examination gloves refer to examination gloves made of natural latex. Natural latex is a plant-based rubber with extremely high flexibility and flexibility. They are a common choice for protective gloves for medical or industrial use. The main reason people choose latex substitutes is because many people suffer from latex allergies. When not worrying about allergies, latex does have a little advantage in comfort and dexterity compared to nitrile gloves, and users often describe them as “second skin”. Latex inspection gloves can be used in many occasions, where agility is important, and the feeling of the objects handled by the gloves must be felt. Usually, for this reason, surgical gloves will be made of latex.But since latex gloves are purely natural, the protein in the material can cause severe allergic reactions. Latex allergies are quite common, ranging from mild discomfort and rash to the possibility of anaphylactic shock, especially in children.

2.Nitrile examination gloves

Nitrile gloves are made of synthetic rubber and are ideal for latex allergies. When it comes to puncture resistance, nitrile gloves are the best gloves. Nitrile gloves are often referred to as “medical grade”. Before selling gloves to hospitals and medical institutions, they must go through a series of tests conducted by the US Food and Drug Administration (FDA) to ensure their durability.

However, nitrile gloves are not as soft as latex gloves and are not easily worn. In fact, when dealing with applications that require fine movement and dexterity, their strength is a weakness. The production cost of nitrile is also slightly higher.

Nitrile gloves have become the standard medical supplies for hospitals and emergency personnel. But police, security guards, housekeepers, factory workers and veterinarians are also using them. On the other hand, latex gloves are still widely used by surgeons and doctors who perform minor operations. Latex is used in certain industrial applications that require hand movement. Latex gloves are rarely used in situations where public participation or unknown people may be exposed to latex. Nitrile inspection gloves and latex inspection gloves have their own positions and should not be confused. Although both have medical and industrial uses, replacing one with the other can be a costly and sometimes dangerous mistake.

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What’s The Function Of Meltblown Fabric For Face Mask?

Category : Blog , Tips & Tricks

The medical face mask has three layers, and the meltblown cloth is the middle layer. It has strong filtering, shielding, and thermal insulation properties. It can play the role of sterilization and virus isolation. It can be said that it is the heart of a medical mask.

Both the inner and outer layers of the medical mask are only supporting functions. The most important thing for filtering viruses is the middle melt-blown cloth. The ordinary melt-blown cloth has a filtration efficiency of 50%. It needs to be reprocessed to increase electrostatic adsorption before bacterial filtration can reach more than 99% ( (Referred to as BFE99) 50% filter efficiency meltblown cloth can only be used as a civilian protective mask, only dust, dust, and can not isolate viruses, but all medical masks, surgical masks must use 99% filter efficiency meltblown cloth .

In the chain of medical masks, meltblown fabrics, special materials for meltblown fabrics, and raw materials, special materials are the most important links. The main raw material for the production of special materials for meltblown cloth is polypropylene (Polypropylene), and the material supply mainly comes from Sinopec. Both Sinopec and PetroChina urgently adjust the production equipment to produce medical polyolefins to meet the needs of medical materials such as non-woven polypropylene special materials and medical polypropylene special materials.

Related reports on the current status of meltblown fabrics:

Meltblown fabric companies and meltblown fabric companies face problems such as shortage of production lines, high production requirements, and long equipment purchase cycles. The production capacity is far from meeting market demand, resulting in unbalanced supply and demand. Some mask factories have machines and workers, but Missing meltblown cloth. Melt-blown cloth as the core material for masks to filter germs, the price has risen from 50thousand CNY / ton to 500 thousand-800thousand CNY / ton in just one month. “One roll cloth is hard to find.”

Why is there a shortage of meltblown cloth?

Meltblown cloth equipment is difficult to deliver in the short term because of the long procurement cycle for key components, so it is difficult for meltblown cloth production to surge in the short term. This is becoming a link to the “stuck neck” of mask production. At present, there are many non-woven fabric factories in China, but due to the low profit and high technical requirements of special materials for melt-blown fabrics, they belong to the field of niche and there are very few manufacturers. Only a few large enterprises can survive.

In addition to the 10 times increase in melt-blown cloth price, ear straps (elastic bands) for masks are the second-largest price increase among raw materials, and have now increased more than 5 times. Therefore, the production cost of masks has increased significantly.

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