Antibacterial and deodorant polyester fiber

Antibacterial and deodorant polyester fiber

Antibacterial and deodorant polyester fiber

Foreword
Methicillin-resistant Staphylococcus aureus (MRSA) has multi-drug resistance. The resistance rate to more than ten kinds of antibiotics is high, and the main diseases are inflammation of the skin and mucous membranes, suppuration, endocarditis, pneumonia, sepsis and the like. For severely infected people, it will cause repeated infections with common bacteria such as Pseudomonas aeruginosa. In 1970, the first hospital infection caused by MRSA was discovered in the United States. In the early 1980s, Japan discovered MRsA patients, and the hospital infection caused by sA was more common in the body. Weak admission patients as well as infants and the elderly. In the late 1970s, methicillin-resistant strains of gold grapes were found in China. In 1981, Shanghai Huashan Hospital reported that methicillin-resistant strains in Staphylococcus aureus isolated in hospitals accounted for 24%. In the following years, the proportion of this strain showed an upward trend. According to statistics, 5% of hospitalized patients in the United States suffer from nosocomial infections, and the average length of hospitalization is 4-5 days. Nearly 10 million people are infected with nosocomial infections. The annual medical expenses are more than 2 billion US dollars. According to relevant information, it is estimated that China spends 10 billion to 15 billion yuan annually due to medical infections]. People know the amount of spinning in the hospital. When the germs stick to it. In the right conditions F will be mass-produced. It is also possible to transfer to the patient's own body or other parts of the body suitable for the survival of the bacteria to cause disease, so textiles are also an important vector for various pathogens. If the textile has the function of inhibiting or preventing the proliferation of bacteria, it reduces the route of pathogen transmission.
From the 1980s to the 1990s, children's textile companies in developed countries, especially Japan, successfully developed various antibacterial and deodorant fibers and anti-MRSA medical fabrics by post-finishing, blending and compounding techniques, especially the developed durable silver-containing fabrics. The fibers and textiles of metal ion inorganic antibacterial agents such as zinc and copper are widely used in various medical institutions since 1991 since the antibacterial effect of Ding has washing durability and high safety for human body. As an important means to prevent nosocomial infection caused by ~IRSA. According to statistics ̈l: anti-MRs ^ fiber products 93 years of production value of 35 million US VII, 2000 12th period of new health products · 24-yuan, 94 years was 40 million US dollars. And the Japanese textile industry has established an anti-MRSA fiber association, which has unified the anti-MI~SA testing technology, standards and related propaganda terms. China's research in this area has just started. At the end of 1996, Jiangsu Textile Research Institute successfully developed KJ-96 antibacterial and deodorant polyester staple fiber containing silver and zinc ions, and successively developed anti-MRSA medical textiles, antibacterial and deodorant civilian bedding, antibacterial. Deodorant socks and resistance
Antibacterial and deodorant products such as bacteria and deodorant underwear.
, antibacterial and deodorant polyester fiber
, physical properties KJ-96 antibacterial and deodorant polyester fiber has a continuous inhibition of reproduction of a variety of bacteria, the production method is mixed with silver, rhodium and other metal ion antibacterial powder in the polyester polymer, melt spinning Fig. 1 is a cross-sectional photographing country of KJ_96 type antibacterial and deodorant polyester fiber, and the black spot in the national fiber is an antibacterial agent powder. Since the antibacterial agent is non-hydrofusible and uniformly distributed inside and on the surface of the fiber, it has excellent washing durability. See table l. Table 1 Antibacterial effect Washing performance Washing times 0 50 Antibacterial rate 98.34% 98.66% Note: The sample inoculated with the strain is Staphylococcus aureus, and the 50 wash samples are inoculated with the new penicillin-resistant Staphylococcus aureus (MRSA). The test method is based on the American AATcc100 standard. Since the diameter of the antibacterial agent powder is about 1pm, after being added to the polyester complex, the antibacterial agent becomes a crystal nucleus of the melt, which correspondingly increases the crystallinity of the fiber. Through the appropriate spinning process, the physical properties similar to those of ordinary polyester fiber can be obtained. See Table 2 Table 2 KJ-96 antibacterial polyester fiber performance fineness 1 68dtex breaking strength 3.86 / dtex elongation elongation 27.84% antibacterial polyester crystallinity Higher than ordinary polyester, so the dyeing rate is relatively low. See Table 3. Table 3 Comparison of dyeing rate of antibacterial polyester and ordinary polyester. Dyeing rate of ordinary polyester 86.7% antibacterial polyester 73.4% Note: Dyeing temperature: 130 ° C. Dye: Fulonglan BGL, 1%, 0 W.
Discussion on antibacterial mechanism:
The mechanism by which a 96 antibacterial fiber inhibits reproduction of bacteria can be inferred as follows:
Silver is present on the fiber and zinc ions are present;
After attaching the bacteria, the Ag, Zn2 ions are in contact with the cells of the bacteria;
, Zn and bacterial DNA junction. This blocks the proliferation of bacteria.
It can be seen from the above mechanism that the antibacterial effect of the KJ-96 antibacterial fiber takes a certain time to complete, and there is no immediate effect of the bactericide or disinfectant. KJ-96 antibacterial fiber contains silver, zinc and other metal ions, which have a broad spectrum of antibacterial effect. Table 4 lists the effective antibacterial species that KJ-96 antibacterial fiber and stick textile property have proven. Table 4 Effective bacterial species Bacterial name resistant to new penicillin Staphylococcus aureus (MRSA) golden yellow grape ball chisel Escherichia coli Bacillus subtilis white Candida (fungus) Aspergillus niger on the table of the state of the bacteria, in daily life many It can cause harm to the human body. This kind of textile product which has the effect of inhibiting reproduction of the seedlings meets the requirements of clean and comfortable in modern society.
,safety
The safety test data of antibacterial fiber and fabric are shown in Table 5. The results show that the safety of KJ-96 antibacterial fiber fabric is not different from that of ordinary fiber fabric, and it will not cause harm to human body after adding antibacterial agent. Table 5 Safety data item Test results Conclusion Oral toxicity (LD50) > lO000g/Kg Non-toxic skin contact test negative non-irritant Test unit: Jiangsu Provincial Health and Epidemic Prevention Station.
Second, one of the sources of anti-MRSA medical textile hospital infections is the hospitalized outpatients infected or infected by bacteria in the hospital environment, textiles and hospitalized diseases - 25· Health new products New textile people have the most frequent contact in daily life, China generally Ordinary cotton or polyester-cotton fabrics are used in hospitals, and disposable nonwoven fabrics are now being used, but most of the nonwoven fabrics are polymer materials such as polypropylene and polyester, that is, after being discarded, non-woven fabrics and above. The bacteria brought by it will cause serious environmental pollution problems. Therefore, it is necessary to use woven fabric medical textile ding which can be repeatedly cleaned and used in the future. Each of the 娄}=}j woven longitudinal products made of antibacterial fiber will be widely used due to its superior antibacterial properties. We use KJ-96 antibacterial polyester fiber mixed with cotton, viscose or conventional polyester fiber, and we have obtained a series of anti-MRsA medical textiles through spinning and weaving, and passed the test of RJ by Beijing Union Medical College Hospital and other health testing departments. Killing bacteria rate of 9g 58%. Table 6 Calculation of anti-MRSA test results: sterilization rate (%) = - - X100AA: average number of recovered bacteria in ordinary textile samples B: average number of recovered bacteria in antibacterial textile samples can be expected, with the increase in people's awareness level, anti-
Medical textiles will gradually enter various medical and health care institutions in China.
Third, the conclusion
Antibacterial and deodorant textiles meet the requirements of clean, sustainable and civilized lifestyle. As a functional textile, it will be favored by more and more consumers. However, due to anti-emergence, (on page 31) 5) use pillowcases and sheets. The disposable pillowcase and bed sheet developed and sold by Japan Nonwovens Co., Ltd. is a two-layer structural nonwoven fabric which is made of polypropylene non-woven fabric and high-preparity paper with antibacterial and deodorant. The hospital can reduce the labor intensity of the staff, and is convenient to handle, non-toxic, smoke-free and pollution-free. 6) Antibacterial hot rolled nonwoven fabric. This product is a new type of durable antibacterial and deodorant with broad-spectrum sterilization ability and wide antibacterial halo.
Non-woven fabric, can kill Staphylococcus aureus, Staphylococcus aureus, Candida albicans, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, Shigella, Enterobacter, Salmonella typhi, Gonorrhea, etc., can deodorize Mildew without any side effects. It is made of non-pharmaceutical, physical antibacterial and deodorant fiber, which is processed by hot rolling. This kind of antibacterial and deodorant fiber is chemically reacted in the field of textile and microbiology, such as textile and microbial deodorization technology. Testing methods and standards, strict management of products. At the same time, the government must impose severe crackdowns on unscrupulous businessmen to ensure the healthy development of the market.
[China Antibacterial Fabric Network ]
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