Collagen fiber mattress lining and preparation method thereof

Abstract

The invention relates to a collagen fiber mattress lining and a preparation method thereof, and belongs to the field of novel home textile materials. The method comprises following steps: performing physical slicing, rewetting, softening, tearing, debonding, opening and impurity removing processes on wet blue waste materials so as to obtain collagen fibers; opening low-melting-point and bi-component fibers; conveying the collagen fibers and the low-melting-point and bi-component fibers to the same former for air laying through pipe air flow so as to obtain a synthetic fiber web; and pre-pressure-heating, thermoforming and cutting the synthetic fiber web so as to obtain the collagen fiber mattress lining. By employing the method, the collagen fibers are extracted from the wet blue waste materials through a simple environment-friendly dry manner, a problem that a conventional collagen fiber extraction process is complex and is not environment-friendly is solved, the process for extracting the collagen fibers is environment-friendly and is simplified, and the manufactured collagen fiber mattress lining is fluffy, can remove moisture, is ventilated, is flame resistant, is warm in winter and cool in summer, and has high sound-absorbing performance.

Description

technical field [0001] The invention relates to the field of novel home textile materials, in particular to a collagen fiber mattress lining and a preparation method thereof. Background technique [0002] Some data show that: 1 ton of untanned salt-wet leather can only produce 200kg of finished leather, which will generate 600kg of solid waste, including about 250kg of tanning waste and 350kg of untanned scraps, and another 100kg is lost in wastewater [Luo Fengxiang. Chromium-containing Resource utilization of leather shavings[J].Western Leather,2014,(4):28-31.], China is a big country of tannery, because our country's tannery industry has been using traditional wet blue leather technology, enterprises produce More than 1.4 million tons of wet blue leather waste, accounting for almost one-half of the world's total [Qian Cheng. Physical properties and product development of ultra-short leather fibers extracted from tanning waste [J]. Industrial Textiles, 2012, 30 (12):16-18,...

AI Technical Summary

Problems solved by technology

Wang Kunyu and others used two methods of alkali and enzyme to extract collagen polypeptide from chrome leather shavings, and showed that the amount of alkali and enzyme, the temperature and time of action have a certain degree of influence on the rubber extraction rate and quality [Wang Kunyu, Zhang Mingrang, with chrome Research on extracting edible gelatin and collagen peptides from leather shavings, Sichuan Food and Fermentation, 2000, 3: 38-43], the chemical method is carried out in the laboratory, and the operation is flexible and convenient, but the utilization rate of waste materials is low, and there are secondary The hazards of secondary pollution

[0005] Physical method: Patent CN201210072696.X discloses a method for extracting spinnable collagen fibers from leather corner waste and waste leather. Raw materials for fiber extraction; patent CN201110426093.0 discloses a method for extracting collagen fibers from the leftovers produced in the tanning process, first soaking the wet blue leather waste in lye for 36-48 hours, and then slowly passing the wet blue leather waste The high-pressure water jet device, after drying, is further beaten and opened by the carding machine to obtain collagen fibers. The extraction of collagen fibers in the above methods is a wet method, which needs to be soaked and extracted in the state of acid and lye. Secondary pollution from emissions

Patent CN201310120515.0 introduces a preparation method of high-pressure high-density collagen fiber regenerated leather, which is composed of 85-100% collagen fiber and 0-15% hot-melt adhesive fiber, because the length of the extracted collagen fiber is difficult to meet the needs of conventional carding machines The length of the fiber (the fiber length that can be carded by ordinary carding machines is between 38-75mm), which will affect the strength of the finished product, so the product can only be used in some specific fields, such as bags, etc.; patent CN201110116015.0 and patent CN201320140596. 6 are all methods of compounding artificial leather by using collagen fiber net layer and other synthetic fibers or fabrics; patent 201110053816.7 adopts a wet method to form the extracted collagen fiber into a net, and then prepare artificial leather products. Patent CN201310119337.X discloses It is composed of collagen fibers and hot-melt adhesive fibers, and is made into regenerated leather through a series of processes such as defibrillation, opening, mixing and opening, net laying, stabbing, heat treatment, edge trimming, and winding. The above-mentioned patent involves The production process is more complicated

[0006] To sum up, chemical methods have the problems of low utilization rate and secondary pollution for the utilization of collagen in wet blue hide waste. The existing physical and mechanical technology extracts collagen fibers from wet blue hide waste and makes the finished product more complicated. , and there is no report on the application in the home textile industry in the reviewed materials

Since the dense structure of the wet blue hide is formed by the tight connection between the collagen fibers through the tanning agent, it is difficult to extract the collagen fibers that can be carded by a conventional carding machine by simple physical or chemical methods, resulting in the length and thickness of the extracted collagen fibers No, therefore, so far, tanning wetblue waste has not been well utilized in batches

Images