Peculiar-smell-free raw cotton fiber capable of keeping natural whiteness and preparation method thereof

Abstract

The invention provides a peculiar-smell-free raw cotton fiber capable of keeping natural whiteness and a preparation method thereof. The smell grade of the raw cotton fiber is greater than or equal tograde 4, the whiteness of the fiber is 60-65, the content of sugar in the fiber is less than or equal to 50[mu]g / g, and the pH value of the fiber is 5-7. According to the peculiar-smell-free raw cotton fiber capable of keeping natural whiteness, polysaccharide is degraded through an acid method to remove the peculiar smell of the cotton fiber, besides, natural pigment and natural wax in the cotton fiber are reserved, the prepared raw cotton fiber not only reserves natural style and appearance of the cotton fiber, but also has no peculiar smell, and subsequent processing of the raw cotton fiber is not affected. The preparation process and the technical route of the peculiar-smell-free raw cotton fiber capable of keeping natural whiteness are simple, can be achieved on existing industrial continuous production equipment, and are high in efficiency, appropriate in cost and convenient to apply and popularize.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a raw cotton fiber which has no peculiar smell and maintains natural whiteness and a preparation method thereof. Background technique [0002] Cotton fiber is a natural fiber developed from epidermal cells grown on cotton seeds. It has natural twists in the longitudinal direction and has good hygroscopicity and air permeability. It is an ideal filling material for clothing. Compared with quilts made of other fillings, pure cotton quilts have the following advantages: [0003] (1) Moisture absorption and moisturizing [0004] Cotton fiber has good hygroscopicity, with a moisture regain rate of 8-11%. Under normal circumstances, cotton fiber can absorb moisture in the surrounding air and keep it moist, so when it comes in contact with people's skin, it can moisturize and nourish the skin, making people feel soft and not stiff. If the humidity of the cotton ...

AI Technical Summary

Problems solved by technology

[0014] However, due to the long growth and development cycle of cotton fiber, a small amount of natural impurities such as polysaccharides remain in the mature cotton fiber structure; in addition, due to the atmospheric environment and soil environment Pollution, there are heavy metals, dust and other pollutants in cotton fibers, as well as mechanical oils and other stains in the cotton fiber harvesting process

Due to the presence of impurities or pollutants such as natural polysaccharides, heavy metals, oils and dust, raw cotton fibers have unpleasant odors, and are not suitable for direct processing into quilts

[0015]The traditional cotton fiber refining process uses a mixed solution of hydrogen peroxide and sodium hydroxide to boil the cotton fiber. Although it can remove the impurities and odor of the raw cotton fiber, but The whiteness of the resulting raw cotton fibers is distorted

In addition, the obtained raw cotton fiber feels hard, tangled into a block, and cannot be carded into a web. It is necessary to add a softener, which not only increases the cost, but also the processed raw cotton fiber has a smell of chemical oil, which affects the quality of the quilt.