New Coronavirus
The epidemic has severely tested China and each of us.
Today (3.02), a total of 80,174 people have been diagnosed with new coronary pneumonia, and 2,915 people have left us.
There are also other parts of the world…
With perseverance and victorious courage, the country opens the sky and opens the heart to protect every countryman and friend.
Those angels who could not express their reverence in words showed their fearless spirit to all mankind. They wanted to exchange their lives for everyone’s lives.
This moment touches everyone’s weakest spot.
This huge country with 1.4 billion people suddenly stopped boiling and became as quiet as a gulf of autumn water.
We should believe in our own greatness and the greatness of China.
The epidemic is about to pass, and it will pass.
It will also make necessary tests and corrections to our epidemic system.
It will also make necessary corrections to the company’s growth model.
At the same time
It will also make necessary corrections to people’s basic necessities of life.
Learning from the experience
Do we, the textile people, put forward new requirements for the production of textiles? And I think that after the epidemic, people should pay attention to antibacterial medicine.
Antibacterial
The strong contagiousness of the new coronavirus and its non-contact transmission route have forced people across the country to wear masks for several months.
I believe that as the epidemic passes, people will take off their masks and return to normal.
However, in addition to the new coronavirus, there are hundreds of millions of viruses and bacteria in nature, which will be a problem we have to face.
In order to eliminate the bacteria that people come into contact with every day, people have developed the habit of washing their hands and face when entering the house; however, we cannot change clothes every day and every time we go in and out.
How to reduce the bacteria carried by clothes?
Wearing antibacterial clothes will definitely reduce the chance of people getting sick in their lives.
In the past time, people only paid more attention to the antibacterial properties of underwear…
The antibacterial properties of outerwear are equally important…
Forever Antibacterial materials
Achieve permanent antibacterial, mainly through the antibacterial material itself, as follows:
Let’s talk about antibacterial first
Generally speaking, antibacterial It is a general term for bacteriostatic and bactericidal effects.
The effect of killing microbial vegetative bodies and propagules is called sterilization; the effect of preventing or inhibiting the growth and reproduction of microorganisms is called bacteriostasis.
Textile fabrics composed of fibers have become good parasites for the survival and reproduction of microorganisms due to their porous shape and chemical structure of high molecular polymers, which are conducive to the attachment of microorganisms.
Antibacterial fabrics have varying degrees of antibacterial effects, which can prevent the reproduction of bacteria and reduce the risk of their re-spread. At the same time, they eliminate the odor caused by bacteria and keep the fabric tidy.
Currently, there are different standards for antibacterial testing, such as American standards and national standards, which are mainly divided into two categories:
One is to monitor specific values, such as the antibacterial rate reaching 99.9%; the other It is the monitored logarithmic value, for example, the logarithmic value is 2.2, 3.8, etc.
Usually when the logarithmic value reaches above 2.2 or the antibacterial rate reaches above 90%, the antibacterial test is qualified.
The main strains tested are: Staphylococcus aureus, Escherichia coli, methicillin-resistant Staphylococcus aureus MRSA, Klebsiella pneumoniae, fungi include Candida albicans, molds include Aspergillus niger, and S. Chaetomium, Aureobasidium pullulans, etc.
The strain requirements for testing are determined based on different product properties.
Classification of antibacterial materials (here mainly refers to antibacterial fibers):
The production of antibacterial textiles from antibacterial fibers is the main direction of development.
Antibacterial fiber is roughly divided into two categories:
One type is modified antibacterial fiber made by adding antibacterial agents to the fiber;
The other type Natural fibers with antibacterial properties, such as certain hemp, bamboo fibers, chitin, etc.
The first type of antibacterial effect is excellent and controllable. The second type can only be said to have antibacterial effect, but the antibacterial rate is not high and only meets the qualified standard.
The main strains tested are: Staphylococcus aureus, Escherichia coli, methicillin-resistant Staphylococcus aureus MRSA, Klebsiella pneumoniae, fungi include Candida albicans, molds include Aspergillus niger, and S. Chaetomium, Aureobasidium pullulans, etc.
Among them, Staphylococcus aureus, Escherichia coli, and Candida albicans are relatively representative.
Natural antibacterial fiber
Hemp
The common characteristics of hemp fibers are water absorption, moisture absorption and good air permeability.
The textiles also have the excellent properties of being sweat-relieving, hygienic, anti-fouling and anti-static.
At the same time, hemp fibers generally contain beneficial substances such as antibacterial cannasterol, and different hemp fibers also contain different chemical components that are helpful for health care.
For example, flax can emit a fragrance that has a strong inhibitory effect on the production of bacteria and is highly lethal to mites.
Ramie contains dinin, pyrimidine, purine and other ingredients, which have a strong inhibitory effect on Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa.
Bamboo raw fiber
Bamboo raw fiber has natural antibacterial properties.-group=”1″ src=”https://www.tradetextile.com/wp-content/uploads/2023/11/20200306211329201007.jpg”>
Products
Polyester filament: 50D, 75D, 100D, 150D, etc. Short fiber: 1.5D*38mm, 1.5D*51mm, etc. Yarn: 21s, 32s, 40s, 50s, etc.
Copper ion nylon antibacterial fiber
Nylon-based copper ion fiber has copper ions firmly embedded in the fiber molecular structure, so it has strong and long-lasting antibacterial properties , deodorization, self-cleaning and other functions, its antibacterial effect is significantly higher than other antibacterial fiber products.
This fiber is particularly evident in its high concentration of copper ions, making it unique in production.
Qingdao Xinwei Textile Development Co., Ltd.’s product-SiLifu® fiber: copper ion deodorant antibacterial fiber. After 50 times of washing, it has the same antibacterial rate against Staphylococcus aureus, Escherichia coli and Candida albicans. Reaching more than 99%, it has good antibacterial effect.
After 10 times of water washing, the deodorizing effect on ammonia odor, acetic acid odor, isovaleric acid odor, 2-nonenal odor, and indole odor is higher than the standard value, and has good deodorizing effect.
Antibacterial property testing
Execution standard: FZ/T 73023-2006
Deodorization characteristic detection
Products
Nylon filament: 50D, 75D, etc.
Color: natural color, black, etc.
Modified cotton fiber with plant traditional Chinese medicine function
Plant traditional Chinese medicine cotton fiber is Qingdao Xinwei A cooperative project between the institute and Qingdao University, patented by Professor Yu Husheng.
As one of the four major natural fibers (cotton, wool, silk, and linen), cotton fiber has always been favored by people due to its unique and excellent properties such as softness, warmth, and comfort.
Cotton fiber has moderate breaking strength and elongation at break, and can be blended with various other fibers. It is comfortable to wear and has good skin-friendly properties, and is widely used in various textiles.
Especially textiles that are in contact with the skin, such as underwear, home textile products, shirts, and T-shirts.
Even today with the development of synthetic fibers, the output of natural cotton is still greater than that of synthetic short fibers, accounting for about 1/3 of the total fiber output.
It can be said that because of the excellent properties of cotton fiber, cotton fiber has become one of the fibers that has been widely used by people since ancient times.
However, cotton fiber itself also has shortcomings that cannot be ignored, such as poor wrinkle resistance and iron-free properties, easy moldiness, easy breeding of bacteria and mites, insufficient durability, and single use.
Modifying cotton fiber, giving it relevant functions, and increasing the added value of cotton fiber will greatly expand the uses of cotton fiber.
Natural plants and Chinese herbal medicines generally have many functions, such as antibacterial, anti-ultraviolet, anti-radiation, anti-mildew, anti-inflammatory, anti-mite and insect repellent, etc.
Plant Chinese medicine extracts use Chinese herbal medicine as raw materials. According to the needs of the extracted final product, through a physical and chemical extraction and separation process, one or more effective substances in the plant are directionally obtained and concentrated. ingredients without changing the structure of its active ingredients.
Chinese herbal extracts are used as functional agents to process fibers or textiles to achieve antibacterial, deodorant, anti-mildew, anti-moth, anti-mite and improvement of skin allergies.
Plant function long-lasting accelerator refers to the ability to increase the probability of contact between functional components in plant extracts and cellulose macromolecules, forming a bond between hydroxyl groups.
It is a type of plant extract that can enhance the interaction between macromolecules formed by this combination and maintain the durability and stability of plant functions.
Functionally modified cotton uses active ingredients extracted from traditional Chinese medicines to modify cotton fibers. The active ingredients from traditional Chinese medicines are “implanted” into the cotton fibers, giving them antibacterial and anti-mite properties. , anti-itching, anti-mildew and other functions, making ordinary cotton fiber highly functional or multi-functional.
The product is green and environmentally friendly, harmless to the human body, and has good washability.
After being washed 20 times, the antibacterial rate (against Staphylococcus aureus) of cotton fiber modified by botanical traditional Chinese medicine still reaches 92.4%, and the anti-mold level reaches level 1. The repellent rate against mites is greater than 78%. </p
