Performance and product development of bamboo raw fiber
Performance and product development of bamboo raw fiber
The concept of bamboo fiber has been widely promoted. Bamboo fiber in the true sense refers to fiber directly separated from bamboo using a unique process, that is, bamboo fiber. The article introduces the performance and product development of bamboo raw fiber, and explains the production process and precautions of bamboo raw fiber spinning, weaving, dyeing and finishing.
OIntroduction
my country has a long history of bamboo culture. Bamboo plays an important role in people’s daily life in food, housing, transportation, entertainment, etc., but it is rarely used in clothing. After years of hard work, Chinese scientific researchers finally successfully developed bamboo fiber in 2002, realizing the application of bamboo in food and filling a gap in bamboo culture.
1The production process of bamboo raw fiber
Bamboo raw fiber refers to the fiber that is directly separated from bamboo using a unique process. Generally, depending on the spinning system used by the textile factory, natural bamboo is sawn into the length required for production, and mechanical and physical methods are used to remove lignin, polypentoses, bamboo powder, pectin and other impurities in the bamboo. , directly extract bamboo fiber from bamboo. Bamboo raw fiber is essentially different from bamboo pulp viscose fiber (regenerated cellulose bamboo fiber) produced by chemical treatment. The former is a pure natural fiber, which is a green and environmentally friendly fiber. It has excellent fiber performance, a special style, excellent taking performance, and significant health care effects. In order to distinguish it from bamboo pulp viscose fiber, it is named bamboo fiber; while the latter is It is a regenerated cellulose fiber among chemical fibers. Some of the excellent properties and health-care ingredients contained in bamboo fiber are affected by chemical processing. In addition, due to the pollution caused by chemical processing, it is not an environmentally friendly fiber in the true sense.
1.1 Pre-treatment process
The pre-treatment process is divided into whole material, bamboo chip making and soaking. First, the branches and tips of the bamboo are removed, and bamboo slips are cut into fixed lengths according to the requirements of the spinning system; then the bamboo tube is split into bamboo pieces of a certain width mechanically or manually; and the bamboo pieces are soaked in a special degumming softener. , soak for a certain period of time.
1.2 Decomposition process
The decomposition process is divided into three steps: cooking, washing, and splitting. Steaming: Heat the bamboo slices together with the soaking liquid to a certain temperature, apply a certain pressure at the same time, and cook them for a certain time to remove sugar, degreasing, degumming and sterilization. Washing: Take out the steamed bamboo slices and wash them with water to remove the attached soaking liquid. Splitting: Mechanically flatten the bamboo slices, and then use a filament machine to break down the coarse fibers.
1.3 Forming process
The forming process generally goes through several steps such as cooking, splitting, reduction, dehydration, and softening. Cooking: Place the crude fiber obtained in the decomposition process into a cooking dish, add soaking liquid, heat to a certain temperature, and pressurize for a certain period of time. Splitting: Divide the thick fibers into finer fibers and rinse them with water to degumm them. Reduction: Place the bamboo fiber in the soaking liquid and add an appropriate amount of additives to increase the strength of the original bamboo fiber. Dehydration: Generally, centrifugal dehydration is used. Softening: Use a softener to soften the bamboo fiber to give it a certain softness.
1.4 Post-processing process
The post-processing process is generally divided into three steps: drying, carding, and screening inspection. Dry the fibers on special drying equipment for a certain period of time to make the moisture content less than 10%; card them with a carding machine and organize them into bamboo fiber filaments; remove short fibers and their powder, and inspect them if they are qualified. Then pack.
2Performances of Bamboo Raw Fiber
2.1 Chemical composition and composition of bamboo fiber
The main chemical components of bamboo fiber are cellulose, hemicellulose and lignin (Table 1). The three are all high polysaccharides, accounting for more than 90% of the dry mass of the fiber, followed by protein, fat, pectin, monosaccharide, and polysaccharide. Ning, pigments, ash, etc., mostly exist in the intracellular cavity or special organelles, directly or indirectly participating in their physiological effects. 22Z0rH9sM
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