N95 Mask Ear Cord Knitting Machine

Machine model: Dt2020EA

Machine name: N95 Mask rope crochet knitting machine

Machine size: 3.85m * 1m * 1.85m

Material: Polyester + Spandex / Nylon + spandex

Size: 5mm

Color: white

Pattern: flat/round

This flat elastic band is suitable for all kinds of facial mask hanger, mask elastic band, KN95 mask, FFP2 elastic earring, fluffy hat elastic belt, doctor cap elastic belt, medical mask elastic band, tubular elastic earring, gloves elastic band, facial mask elastic rope, mask bungee jumping, surgical mask earring.

Information about textile industry

"Standard" and medical mask standard realize mutual connection

Children's mask is an important product to protect children's health and safety during the epidemic or in the air pollution environment. The standard requires that the bacterial filtration efficiency of children's health masks should be ≥ 95%. The technical index comes from the current compulsory medical industry standard YY 0469 "medical surgical mask" on bacterial filtration efficiency, which is also the index adopted by type I in European Union standard en14683 and American Standard ASTM f2100, and the same index as medical mask is adopted in the formulation of bacterial filtration efficiency index in children's health mask.

The test method of this project is carried out according to the test method in Appendix B of YY 0469. In this test method, the filtration effect of respirator on bacteria was verified by examining the barrier ability of respirator to Staphylococcus aureus aerosol with particle size of about 3 μ M. This method can effectively verify the barrier ability of children's health masks to saliva, droplets and large particles from the mouth and nose, ensure the basic safety of children's daily wearing process, and reduce the infection of common pathogens.

In order to meet the requirements of hygiene, the process of disinfection and sterilization is often used in the production process of enterprises, among which ethylene oxide is a typical and economical way. China's current compulsory national standards GB 19083 technical requirements for medical protective masks, YY 0469 medical surgical masks and other standards for medical masks put forward sterilization requirements for masks, and the ethylene oxide residue is required to be no more than 10 μ g / g. In terms of foreign standards, Japan is also no more than 10 μ g / g, and the United States has different regulations based on the use position of medical devices.

From the perspective of children's health and safety, children's masks need to be sterilized according to medical masks, so as to avoid the potential risk of bacterial pollution caused by insufficient cleanliness in the production process. GB / T 38880-2020, on the one hand, meets the sterilization requirements of medical mask standards, on the other hand, greatly improves the requirements of ethylene oxide residue limit, which is no more than 2 μ g / g. The test method of this project is clearly specified in accordance with the provisions of Chapter 9 of the chemical test method for medical infusion and transfusion injection equipment GB / T 14233.1-2008, i.e. gas chromatography is used for determination. The method has high sensitivity, good repeatability and low detection limit.

During the use of the mask, the product fits on the nose and face. The filtered air directly enters the respiratory tract through the mask. The area between the face and the mask belongs to a humid and airtight environment. Therefore, if there are too many pathogenic microorganisms on the inner surface of the product which may cause facial skin infection and respiratory tract infection, it must be controlled. According to the provisions of GB 15979-2001 hygienic standard for disposable sanitary products, the code clearly requires that pathogenic bacteria in children's masks shall not be detected and bacteria and fungi shall not exceed the standard.

Liu Yi, expert of children's Hospital Affiliated to Capital Institute of Pediatrics: guide and standardize the wearing of children's masks

Children's masks can effectively block the spread of droplets, pollen, dust, microorganisms and other particles, reduce the concentration of viruses in aerosols, and prevent the inhalation of microorganisms, dust, droplets, smoke and other particles in the air.

Children's mental immaturity can't clearly understand the significance of wearing children's masks. Parents and teachers should guide them correctly, and can't achieve the purpose of wearing "children's masks" by over describing the bad situation of the external environment. This may make children rely too much on the sense of safety obtained by wearing masks, and do not remove masks during vigorous exercise, which will affect their cardiorespiratory function; in order to ensure the resumption of classes In addition to promoting students to wear masks in the classroom, regular window ventilation, frequent hand washing and proper social distance should be emphasized, which are also important measures to prevent virus infection. Parents and teachers should help children mark masks with special marks to avoid cross infection caused by wearing wrong masks.

Liu Taijie, senior engineer of national human ergonomics Standardization Technical Committee: strictly control the head mold technology of children's masks

The head mould data of the current standard refer to GB / T 26160 the national standard of head and face size of Chinese minors. This standard is based on a large number of measurement data of children of different ages and genders in various regions of China. It collects 26000 children's facial feature data, which basically represents the characteristics of the face size of minors in China.

The measurement of human head and face size of minors in China started in 2006. The non-contact anthropometry method is adopted. The equipment used is the world's leading three-dimensional laser body scanner and head scanner made in Germany. See GB / T 23698 for the measurement method. This measurement method is safe and efficient, and can avoid harm to active children. According to the requirements of measurement methods, non-contact three-dimensional scanning method is used to acquire the head data. Before data collection, according to the standard requirements, use the medical mesh cap to cover and press the children's hair tightly to ensure the accuracy of data.

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