Collagen fiber fancy yarn and preparation method thereof

Abstract

The invention discloses a collagenous fiber fancy yarn and a preparing method thereof and relates to the field of textiles. The preparing method of the collagenous fiber fancy yarn comprises the steps that a wet method is adopted for extracting collagenous fibers with the length ranging from 8 mm to 40 mm from blue and wet scrap leather; short collagenous fibers and long collagenous fibers are obtained after the collagenous fibers are subjected to two opening processes and a long fiber removing and separating process; the short collagenous fibers are prepared into fiber knot balls through a pearl wool ball twisting machine; the fiber knot balls and the long collagenous fibers are fed to a carding machine together, and the collagenous fiber fancy yarn is obtained after the processes of carding, thick combining and yarn thinning. According to the preparing method of the collagenous fiber fancy yarn, the collagenous fiber with different lengths are extracted from the blue and wet scrap leather, the short collagenous fibers are prepared into the fiber knot balls and then prepared into the collagenous fiber fancy yarn together with the long collagenous fibers, the problem that the extracted short collagenous fibers cannot be well used is solved, and the purpose of fully utilizing the short collagenous fibers extracted from the blue and wet scrap leather is achieved.

Description

technical field [0001] The invention relates to the textile field, in particular to a collagen fiber fancy yarn and a preparation method thereof. Background technique [0002] my country is the world's largest leather production base, with output and export volume ranking first in the world. However, my country's leather industry has always used the traditional wet blue leather process, and enterprises produce more than 1.4 million tons of leather waste every year, almost It accounts for one-half of the total solid waste of tanning in the world. Currently, incineration and landfill are mainly used to deal with waste, but both of them will have lasting danger to the environment [Qian Cheng. Fiber status and development trend [J]. Industrial Textiles, 2010,28(1):5-8.]. Since wet blue leather is obtained by tanning fur after a series of chemical treatments, and a series of subsequent shaving and trimming processes of wet blue leather will produce a lot of scraps, and the main un...

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Problems solved by technology

[0003] There are three main methods for extracting collagen fibers from wet blue hide waste by physical and mechanical means: one is to use a pulverizer to grind the waste into collagen fiber powder, which is used for processing collagen fiber powder flocking fabrics and strengthening paper, such as Patent CN201110146760.X introduces a method for preparing short leather flocking fibers. The waste leather powder after crushing is graded and screened to obtain 30-400 meshes of leather flocking powder. The adhesive bonds the fiber powder to the fabric, resulting in poor air permeability; and when the collagen fiber powder is used for paper reinforcement, the preparation process of a composite sound-absorbing paper disclosed by the patent CN200810017903.5, the amount of collagen fiber powder No more than 50% of wood pulp fiber, and can not achieve the purpose of making good use of wet blue hide waste

The second is the method of directly opening and tearing the waste multiple times by dry method to obtain collagen fibers. Since the density of the wet blue hide after tanning is very high, the fiber length obtained by directly tearing and loosening by the opening roller is very short After sieving, the length can be obtained between 1-8mm, which can only be used for specific purposes, such as wet papermaking or as a composite layer of other materials, such as the high decorative collagen fiber suede composite layer introduced in patent CN201320140596.6 faux leather

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