Regenerated Cellulose Fiber

Regenerated fiber made of cellulose and made of cellulose II.

Due to the reduction of cultivated land and the depletion of petroleum resources, the production of natural fibers and synthetic fibers will be more and more restricted; people pay more attention to the environmental performance of textile consumption, and the value of regenerated cellulose fibers has been re-established. Know and discover. The application of regenerated cellulose fibers has now gained an unprecedented opportunity for development.

The development of regenerated cellulose fibers can be generally divided into three stages, forming three generations of products. The first generation was an ordinary viscose fiber that was introduced in the early 20th century to solve the cotton shortage. The second generation is a high-moisture modulus viscose fiber that has been industrially produced in the 1950s. Its main products include tiger kapok developed in Japan (later named Polynosic) and the modified high-moisture modulus fiber HWM developed by the United States and blue. Modal fiber produced by the company in the late 1980s using a new process. Since the late 1960s, due to the rapid development of synthetic fiber production technology, abundant raw materials and low cost, synthetic fibers have greatly impacted the market position of regenerated cellulose fibers. Many research institutes and companies have paid more attention to the development and application of new synthetic fibers. During this period, the development of the world's regenerated cellulose fibers has tended to stagnate. The third generation of products is represented by the staple fiber Tencel and the filament Newcell introduced in the 1990s. Affected by factors such as health and environmental protection, and advocating nature, people have a new understanding of regenerated cellulose fibers, and the physical and chemical properties of a new generation of regenerated cellulose fibers have been fully improved. Therefore, the application of regenerated cellulose fibers has reappeared. Rapid growth.

According to reports, the world's total synthetic fiber production in 2005 was 34.6 million tons, a decrease of 0.30% compared to 34.7 million tons in 2004. However, the production of regenerated cellulose fiber has shown a significant growth trend. According to statistics, the total production capacity of regenerated cellulose fiber in the world was 2.264 million tons in 2003, 2.463 million tons in 2004, and 292.7 in 2005. In 2006, the total amount of regenerated cellulose in the world reached 3.4 million.

1.Tencel fiber

Tencel fiber is also known as "Tiansi" and has recently been called "Lyocell". It is a combination of conifer-based wood pulp, water and solvent amine oxide, heated to complete dissolution, does not produce any derivatives and chemical effects during the dissolution process, and is directly spun by impurity removal. Its molecular structure is simple carbon water. Compound. Tencel fiber can be completely decomposed in the soil and has no pollution to the environment. In addition, the amine oxide solvent used in the production is completely harmless to the human body, can be almost completely recovered, and can be repeatedly used to produce cellulose molecules contained in the raw material pulp. Can not afford chemical changes, no by-products, no waste discharged outside the factory, is environmentally friendly or green fiber. The fiber fabric has good hygroscopicity, comfort, drape and stiffness and good dyeability, and can be blended with cotton, wool, hemp, nitrile, polyester, etc., and can be ring-spinning, air-spinning, core-spun, Spinning into a variety of cotton and wool yarns, core yarns and so on. Therefore, the fiber can be used not only in the production of underwear fabrics, but also in the use of fabrics for outer garments.

2.Modal fiber

Modal fiber, also known as "Mudal" "Modal" is a brand new cellulose fiber. The raw material of Modal fiber comes from natural wood and can be naturally degraded after use. This type of fiber is a new type of environmentally friendly fiber in the 21st century because it uses natural cellulose as a raw material, has biodegradability, and does not produce a serious environmental pollution problem like viscose fiber in the fiber production process. Modal fiber is half the price of Tencel fiber and is a second generation of regenerated cellulose fiber. Modal fiber can be blended and interwoven with a variety of fibers to achieve the characteristics of their respective fibers for better results. Modal fiber fabric has better moisture absorption and air permeability than pure cotton fabric. It has soft hand feeling, good drape, comfortable wearing and bright color. It is a natural mercerized fabric. Because of the comfort, flexibility and breathability of Modal fabrics, it is used in the production of underwear by many well-known underwear brands like Seven Wolves, Jian Jiang, David Archy, etc., and more and more domestic consumers love modal underwear. However, because of these characteristics, Modal fabrics are less used in garments because it is more difficult to achieve the effect of shaping.

3. Bamboo fiber

Bamboo fiber is a new type of regenerated cellulose fiber developed and industrialized by China after soybean protein fiber. Bamboo fiber is divided into bamboo fiber and bamboo fiber. Bamboo fiber is made from bamboo as a raw material, added with functional additives in bamboo pulp, and processed by wet spinning. Bamboo fibrils are fibers obtained by treating bamboo with natural biological agents. Bamboo pulp, which is a raw material for spinning, is derived from the fast-growing fresh bamboo and is rich in resources. The waste soil is buried and burned without causing environmental pollution. It is an environmentally friendly fiber that meets the needs of green consumption. Bamboo fiber is similar in performance to viscose fiber. Bamboo fiber fabric has good moisture absorption and gas permeability. Its drape and dyeing properties are also good. It has silky luster and hand feeling, and has antibacterial, deodorant and anti-ultraviolet functions. These natural properties of bamboo fiber make it a seat in the textile of the close-fitting fabric. With the health and naturalization of consumer attitudes, bamboo fiber has been sought after by major underwear manufacturers.

4. Viscose-based chitin fiber

Chitin is widely found in the outer shells of aquatic products such as shrimps, quails and other arthropods, as well as in the cell walls of fungi and algae. The viscose-based chitin fiber is a fiber produced by a conventional wet spinning process by mixing chitin, chitosan and cellulose. It is biologically active, biodegradable and biocompatible, and has excellent moisture absorption and moisturizing functions. The use of chitin fiber and cotton blended fabrics to take deodorizing functions has broad prospects for the development of health apparel applications.

In short, all fibers that are reused from cellulose are called regenerated cellulose fibers.

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