Textile antibacterial finishing technology
Textile antibacterial finishing technology, textile antibacterial fabric technology, textile antibacterial fabric principle
1. The origin of antibacterial finishing In the environment where humans live, the footprints of microorganisms are everywhere. There are relatives and friends everywhere in the soil, flowing water, atmosphere, and space near the ground. There are thousands of species, and their fecundity is particularly amazing (about 20 minutes of species can reproduce one generation). People deal with various microorganisms all the time and enjoy the benefits they provide. At the same time, some microorganisms can cause mildew and decay of materials. If they invade the human body, they will affect health and even endanger life. Microorganisms attached to textiles, under appropriate conditions, will rapidly multiply to form mycelium or mildew. Due to the fermentation of microorganisms, natural fibers (such as cotton) will degrade or produce a foul odor, resulting in deterioration of wearability. In order to prevent microorganisms from damaging the wearing properties of natural fibers, anti-mildew finishing was developed very early (around 1900). By the 1940s, Sanitized Finishing products first appeared in the United States to cut off the chain of textiles as a vector for spreading pathogenic bacteria. This was a new round of strangulation of microorganisms launched by humans to protect their own health. As soon as sanitary finishing products appeared, they were favored by the Japanese who loved cleanliness. Soon, the Japanese proposed that sanitary finishing products could not express the characteristics of the product better than antibacterial and deodorant finishing. With the development of antibacterial products on the market, the definition of antibacterial has become more extensive. After 1996, antibacterial finishing with better antibacterial properties will be developed. The emergence of hygienic finishing is that people use textiles as the second layer of human skin to prevent microorganisms from invading the body. Hygienic finishing was first changed to antibacterial and deodorant finishing. The current antibacterial finishing fully reflects the Japanese people’s attitude towards the relationship between textiles and microorganisms. The several stages of treatment are also a reflection of the progress of antibacterial finishing technology. This article intends to describe the process and further development for the benefit of colleagues.
2. The symbiotic relationship between humans and microorganisms. Not only are the surrounding environment of human life filled with microorganisms, they also live and reproduce in people’s bodies. There is truly an indissoluble bond between humans and microorganisms. Under normal circumstances, in addition to the internal organs, blood vessels and lymphatic system of the human body, microorganisms are present in various parts of the “open system” to the outside world, such as the skin, respiratory tract, gastrointestinal, reproductive and urinary systems. It’s just that under normal circumstances, various bacterial species are in a coordinated and balanced state, or “normal flora”, so that they will not cause disease. 2 Some data show that the number of microorganisms on the skin of the upper body of a person is about 100-5000 strains/cm. They use sweat and secretions as nutrients to carry out the metabolic process of growth, reproduction and death. Fatty acids and lactic acid in sweat or secretions can also kill certain microorganisms. Microorganisms also kill or inactivate each other, forming a coordinated balance in nature. For people, microorganisms can be divided into two categories: harmful pathogenic flora and basically harmless resident flora or normal flora, which will be introduced later.
(1) Harmful flora There are a small number of pathogenic bacteria among microorganisms such as:
1. Dermatophytes (shallow invasion) among fungi that invade the skin will multiply rapidly under moist conditions with high secretion. Their number exceeds the normal number, causing an imbalance of bacterial flora, invading the superficial layers of the skin, causing eczema, athlete’s foot, Tinea capitis, etc. Candida albicans (fungus) infects the epidermis and causes vaginitis, cervical erosion and other diseases. And its deep invasion can cause thrush, candida enteritis, esophagitis, bronchitis, pneumonia, cystitis, pyelonephritis, sepsis, endocarditis, meningitis and other diseases in children; if it penetrates deep into the internal organs, it can also cause cervical cancer. Cancer, colon cancer, breast cancer and other tumors. Staphylococcus aureus invades skin cracks or wounds, sweat glands, and hair follicle disorders, causing ulcers, neonatal pemphigus, acute mastitis, abscess otitis media and other diseases. The pus is yellow. When Staphylococcus aureus invades the blood, it can Cause sepsis. Pseudomonas aeruginosa can cause burn infection and invasive wounds to form necrosis, and the pus will turn green. Most of the bacteria that live on the skin surface are transmitted through contact and can cause surgical diseases under appropriate conditions.
2. Invasion of the respiratory tract: viridans streptococci that live in the nasopharynx, Actinomyces elegans that live in the tonsils, Mycoplasma pneumoniae, meningococci and influenza bacilli. Influenza bacilli are brought out from nasal mucus, sputum, and sneezes, and are spread by contamination on various objects.
3. Typhoid bacteria and dysentery bacteria that invade the digestive tract are transferred to food by flies or dust, and then invade the digestive tract. There are usually about 4 × 10 microorganisms in one gram of feces, accounting for 40% of the dry weight of the feces. Anaerobic bacteria account for more than 99% of normal feces, and Escherichia coli accounts for less than 1%. Retting manure can kill microorganisms. Escherichia coli invades the urinary system and can cause urethritis, cystitis, and pyelonephritis.
4. Things that invade the eyes include Chlamydia trachomatis, inclusion bodies, and conjunctivitis.
5. Sexually transmitted Bacillus subtilis is transmitted through sexual contact. There are two types of transmission of harmful pathogenic bacteria: direct and indirect. Healthy carriers do not get sick themselves, but they can cause people with weak resistance to get sick. Textiles are an important way. If textiles have the function of killing or inhibiting pathogenic bacteria, they are undoubtedly�The second layer of skin builds an invisible line of defense to protect human health.
This article is excerpted from [China Antibacterial Fabric Network www.1kangjun.com]. Please indicate when reprinting.
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