Key words: silica gel, mask, mask, ear band
2655 words | expected reading time: 8 minutes
According to the real-time monitoring system of Johns Hopkins University in the United States, as of 9:30 p.m. EDT on April 9, at least 1600427 cases of new coronavirus infection have occurred in the world, with a total of 95569 deaths worldwide.
Overseas novel coronavirus pneumonia continues to spread and the situation is grim. The gap between respirators and respirators is enormous. With the increasing number of critically ill patients, respirators are becoming lifesaving machines in overseas countries. For a while, masks, respirators and other medical supplies have become the focus of all countries.
When it comes to masks, let's take a look at the details of the silica gel masks, the matching silica gel masks for respirators and the silica gel earbands.
01
Tsinghua Alumni's "transition" new silicone mask
The silicone mask has been developed for gas and fog prevention in the early years, while the silicone mask has a relatively long service life and is soft and comfortable. Wear for a long time, not easy to cause allergic reactions. However, silica gel materials also have different degrees of hardness and softness. Masks with high hardness are easy to cause facial indentation, while those with low hardness may not be worn firmly, which is prone to air leakage.
However, if the filtering part of the silica gel mask does not achieve multi-layer filtering at the same time, the filter cotton is still used, such as synthetic fiber filter cotton, non-woven filter cotton, glass fiber filter cotton, activated carbon filter cotton, etc, One or more kinds of filter cotton and one or more layers of filter cotton are used for air filtration to try to prevent the new coronavirus from invading the human body, but the actual effect is far from the same. Therefore, whether it's silica gel mask or ordinary mask, the important problem or the middle filter element problem.
Mou Xiaoyong, a new famous doctor engaged in the research and development of artificial intelligence medical imaging technology, has recently developed a new type of mask.
The N95 protective mask made of this new silica gel material adopts the new PTFE nano coating instead of the conventional polypropylene melt blown non-woven fabric. The product has passed the performance test of GB / T 32610-2016 (daily protection level), GB 2626-2006 (industrial protection level) and GB 19083-2010 (medical protective mask).
After adopting the new technology, it can not only realize the protection of the mask in case of the shortage of melt blown cloth, but also make the mask very durable: the filtering efficiency reaches 98% (grade N95), even if the cooking and alcohol disinfection are repeated repeatedly, it will not fail
02
Spark: the first "silicone mask" production line has been put into production successfully! 10 million + exported to Europe and America
According to sinochem.com, the first production line with an annual output of 10 million kn95 silicone masks of Jiangxi Bluestar spark silicone Co., Ltd. (i.e. ekon spark silicone) is officially put into production, and 900000 silicone masks will be sent from the spark production line to the global epidemic prevention line every month.
According to reports, the production line from project approval, design, market positioning to production, only took 35 days. Ekon spark silicone provides a new generation of kn95 silicone masks with the latest technology and the fastest speed to alleviate the global shortage of medical and personal protective masks. Taking advantage of the advantages of Eiken spark silicone raw materials and the internal resources of China Chemical Group, the production line has been built in the warehouse of the original silicone four branch factory, which has solid-state molding machine, liquid molding machine, injection molding machine and other supporting production lines.
Ekon silicone kn95 silicone mask, also known as self-priming filter respirator, is designed with 16 mask types and 4 colors. With the design of 5-layer kn95 filter element, it can effectively filter bacteria, droplets, dust and other substances in the air, and the filtering efficiency is more than 95%.
Good sealing performance, make the mask more closely fit the face shape, excellent softness and adjustable and stretchable silica gel ear rope, wearing will not produce ear pulling feeling. The product is resistant to high temperature boiling without deformation, and can be reused after simple replacement of filter element. ,
In addition, there are also some rubber enterprises to convert to silicone masks, such as: three Rubber Co., Ltd., Xiongbing Rubber Co., Ltd.
03
Respirator liquid silicone mask
The respiratory masks and anesthesia masks for medical equipment are basically medical grade liquid silica gel processed by injection molding. According to different product materials and processes, they can be divided into full silica gel masks and rubber covered masks. It is understood that the respirator masks used to fight against the epidemic are full silica gel masks, especially liquid silica gel nose masks and liquid silica gel nose pad masks.
There are several kinds of respirators on the market, including liquid silicone masks for medical anesthesia:
1. The liquid silica gel full face mask is characterized by covering the nose and mouth. Patients can use mouth breathing or nose breathing. It is beneficial for patients who are accustomed to using mouth breathing during sleep. It can avoid air leakage through the mouth. It is suitable for patients with other respiratory diseases, such as COPD patients. Compared with other kinds of face masks, full face masks are more likely to leak air, which will affect drinking water and communication to a certain extent. For the patients who have not serious nasal obstruction and use nasal breathing during sleep, consider the following two kinds of masks.
2. Liquid silicone nose mask liquid silicone nose mask covers the nose, breathes through the nose, has wide vision, is simple and comfortable, and is widely used for general patients. It's easy to leak air through the mouth. Friends who are used to breathing through the mouth prefer to choose nose mask.
Liquid silicone nose pad mask this kind of mask has the least contact with the face skin, is light and comfortable, breathes through the nose, has wide vision, claustrophobia patients are the first choice, snoring patients can use it. The inserted nasal pad may stimulate the nasal mucosa significantly when the pressure is high. It is not recommended for the patients with deviated nasal septum, especially for the patients with mouth breathing. The treatment discount for the patients with air leakage through the mouth will be large.
It is understood that in the process of fighting the epidemic, there is a great demand for liquid silicone nose mask and liquid silicone nose pad mask. Medical silica gel equipment has strict requirements on production process and production environment. Pre production production equipment and production environment management test reports need field verification before they can be qualified for production. Compared with traditional medical raw materials, liquid silica gel has unique advantages, and it is also the inevitable trend of medical equipment raw materials in the future.
04
Silicone ear tape
The disposable mask will form a "bow" shaped corrugated channel when the ear rope is stretched, which will lead to the decrease of sealing. Now there are special solutions to this problem. Previously, we introduced the TPU material to make the adjusting button of the mask to help the medical staff relieve the pain of the mask TPU in the medical world Today, let's take a look at the solution of using silica gel to make mask silica gel ear rope.
The elasticity of silica gel material is greater than that of cotton. It's also natural to put silica gel ear rope on the left and right sides of the mask. The high resilience of silica gel can be used to tightly hold the mask to make it closely fit on the nose wing and the mouth. Once the tightening force rises, it means that the safety performance is more stable because the tight fitting can effectively isolate bacteria and impurities from entering the respiratory tract through the gap, which These are one of the advantages of the strong resilience of silica gel.
The second is the safety performance of silica gel ear rope. Silica gel is a product widely used in safety protection. It can pass a number of testing and certification, including FDA, lfgb, biocompatibility, etc. in addition, silica gel can inhibit bacteria breeding and other effects. The traditional mask ear rope can wrap many bacteria and other impurities, but it will not occur after silica gel is used again, so that people The safety performance of the ear rope of the body contact mask is further improved, and the safety performance of the silicone ear rope is higher than that of the silicone ear rope.
Source: Sina Weibo, yuexiahualan, sinochem.com, etc., edited by utpe, please indicate the source for reprint.
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