Shrimp Shells And Crab Shells Into Garments? &Nbsp; The Industry Of Chitosan Fiber Is Just Around The Corner.

The shrimps and crab shells on the table can be woven into beautiful costumes.

Moreover, raw materials such as aerospace materials, bandage bandages, surgical sutures, and radiation protection clothing may come from shrimp shells and crab shells.

As an important variety of biomass regenerated polysaccharide fiber, chitosan fibers derived from broad ocean are attracting more and more attention due to its rich resources, superior functions, and renewable products.

After a long period of research and application in China, a pilot production line of 200 tons / year has been formed and smoothly put into production. Some enterprises are speeding up the construction of the 2000 ton / year fiber production line, and the industrialization of chitosan fiber is just around the corner.

Chitosan fiber has five functions naturally.

Nontoxic, mildew resistant, antibacterial, flame retardant and antistatic, chitosan fibers are rare and natural fibers with these five functions.

Chitosan, the main raw material for producing chitosan fiber, is the product after deacetylation of chitin.

Chitin, also known as chitin and chitin, is mainly found in the cell walls of shrimp, crabs, insect shells, fungi and algae.

Each year, billions of tons of chitin can be extracted from chitin in the world, and billions of tons of chitosan can be extracted.

Chitin is also the largest nitrogen containing natural organic compound on earth except protein.

Regretfully, although there is a lot of chitin in nature, it is estimated that only 150 thousand tons of chitin can be obtained worldwide, and tens of thousands of tons of chitin are actually produced.

According to the data of experts, the chitin produced in the world is not over 10 thousand tons, mainly used in medicine, cosmetics, health products, food additives, etc.

The study of chitosan fibers abroad started earlier and began in the early part of the last century.

As early as 1926, Danish Knwike was first made into chitin fibers.

In the late 1960s, researchers at Fuji textile company in Japan systematically studied chitin and found that these natural materials were widely distributed and safe and non-toxic. They were especially suitable for making bandage products and could accelerate wound healing.

They have also been proved by animal experiments that this new material has the same or better effect than bacteria on infection caused by bacteria.

In 1980, the Japanese American Chemical Industry Company pioneered the manufacture of chitosan fibers.

In the early 1990s, Japan first made use of the properties of chitosan fibers to make antibacterial and odorless underwear and pantyhose blended with cotton, which was deeply favored by consumers.

Since then, Japanese fabric processing company has worked with Asahi Asahi textile company to develop a moisture absorbing and moisture permeable material by coating chitin on the side of the skin.

Fuji textile company of Japan has developed a high wet modulus viscose fabric suitable for baby clothing.

The fiber added chitin, which has moisture and antibacterial components, can inhibit the propagation of microorganisms and prevent skin allergy.

In addition, in 1999, chitin company of Korea also set up the trial production line of chitosan fiber.

However, the chitosan fibers of these countries and companies have not been mass produced for various reasons. Instead, they seek related products to our country.

This has made room for the development of China's chitosan fiber industry.

A 200 ton / year production line has been formed in China.

Compared with foreign countries, the development of chitin textiles in China started late.

The preparation of chitin and its derivatives has been studied in China since 1950s, but the progress is slow.

Chitosan was first used as pigment printing film forming agent, and then used as finishing agent and adhesive for formaldehyde free fabric.

The use of the excellent biomedical properties of chitosan as a medical material began in the early 90s of last century.

1990s is chitin in China.

In 1991, the chitin medical suture was successfully developed at Donghua University, and then the chitosan medical dressing (artificial skin) was developed and applied for patent.

From 1999 to 2000, Donghua University developed chitin series blended yarns and fabrics, and made all kinds of health care underwear, tights and baby products.

In 2000, in Weifang, Shandong, the world's first South Korean sole proprietorship with mass production of pure chitin was put into production, with a monthly output of 3 tons.

Besides Shanghai, manufacturers in Beijing, Jiangsu, Zhejiang and other provinces and cities have also developed chitin health care underwear or bedding, and have been put on the market.

The most representative one is Shandong Huaxing Group, which has independently developed R & D to form a 200 ton / year chitin fiber production line with independent intellectual property rights, and has opened up the downstream industry chain, thus realizing product diversification and serialization application.

Hays Moore (Hismer) is the trade name of Huaxing chitosan fiber, which implies the health element (Healthmol).

Hu Guangmin, the chairman of Huaxing Group, told reporters that Huaxing Group has a clear understanding of the situation of the pformation and upgrading of the textile chemical fiber industry after many years of rapid development.

For this reason, the company made a plan early, "to rely on water and draft water", aiming at the rich marine resources of Shandong, and began testing the chitin fiber spinning in 2006.

In the end, enterprises used acetic acid and sodium hydroxide as solvent, the whole process was non-toxic spinning, and the national invention patent was obtained.

In the process of spinning spinning, Shandong Huaxing adopts advanced technologies such as vacuum dissolution and centrifugal defoaming. In the spinning and post-processing processes, the properties of the fibers are improved by ultrasonic and microwave treatment.

The dry breaking strength of Huaxing chitin fiber is 1.5 ~ 1.8CN/dtex, the elongation at break is more than 14%, and the line density deviation rate is less than or equal to 5%. It has excellent spinnability, and can be blended with cotton, hemp, modal, viscose, wool and cashmere to make all kinds of high-grade functional textile fabrics. It can also be used as high-grade medical protective materials with medical viscose and polyester.

Applications focus on three major areas.

At present, chitosan fiber is mainly used in three fields, including industry, medicine and textiles.

In the field of industry, aerospace is undoubtedly the most concern because of its relationship with national security and the comprehensive strength of the country.

Chitin fiber has achieved gratifying achievements in the field of aerospace. - Huaxing Group's special chitosan fiber cloth has been used in "Tiangong-1" and "Shenzhou eight", and has been identified as "China aerospace special products". Shandong Huaxing Group has become "China's space industry cooperation partner".

In addition, the chitosan fiber can also be used as a barrier for radioactive materials and for labour protection products in nuclear industry. It can be used as tobacco filter material for tobacco industry, water purifier and special purpose air filter material, and special pollution prevention cloth.

In the field of textile and clothing, chitosan fiber has the functions of moisture absorption, perspiration, antistatic, bacteriostatic and mildew resistance, making it especially suitable for products such as bedding, underwear, socks, towels and other direct contact with skin.

According to Hu Guangmin, Huaxing Group has more than 1000 kinds of products in the field of textiles, and has the brand of "Hai CI honey language". It has set up dozens of hundred brand stores nationwide, and the market reflects well.

In the field of medical and health which can best reflect the good biological characteristics of chitosan fiber, the application has also made some progress, but it is still not satisfactory.

Wang Xiaodong, deputy general manager of Guangdong Lily Medical Technology Co., Ltd., who has been engaged in research on new medical materials for many years, told reporters that first, the medical and health industry has strict supervision and low trust in animal source products. People (regulators) have not fully recognized its safety, effectiveness and stability.

For example, people have been paying attention to chitosan fiber medical dressing for more than ten years, but at present, no mature product has entered the mainstream market of dressings. These dressings are basically classified into three kinds of medical devices.

Secondly, cost is an important factor restricting the expansion of applications.

A big palm.

Hu Guangmin also believes that engineering and industrialization are the key to the application of scientific and technological achievements, so that we can quickly reduce costs and expand the scope of fiber application.

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To this end, Huaxing Group has begun to scale up on the basis of advanced independent technology. The automatic production line of 2000 tons / year of pure chitosan fiber is currently being built up and is expected to be completed before and after the National Day this year.

At that time, the scale of production will reach the first place in the world, and the quality of products will also be greatly improved, and the production cost will be further reduced.

The leading technology - scale and brand monopoly is the three step of Huaxing's development of chitosan fiber products.

Production of high strength fibers with low viscosity materials

Although chitin fiber has a tendency to scale, and industrialization is just around the corner, there is a widespread concern in the industry, that is, raw materials.

Some people believe that, especially the chitin fiber production capacity to reach 1000 tons or even 10000 tons, raw material bottlenecks will be very prominent.

Zhou Xinmin, general manager of Tianjin Zhongsheng Bioengineering Co., Ltd., has studied in the chitosan raw material industry for more than 10 years. He has his own opinion on the formation of raw material bottlenecks.

At present, most of the chitosan produced in China is made from shrimp and crab shell. The raw material of chitosan fiber is less than 500 tons per year. Due to the influence of technology and market pull, it is still in the stage of low productivity and low industrialization.

Influenced by the technical requirements of chitosan fiber, the production of chitosan is currently used as raw material for the production of chitosan. Because of the lack of key technology and technology, the diversification of raw materials is hindered.