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Manufacturing method of regenerated collagen fiber

A manufacturing method and collagen fiber technology, applied in the direction of animal fiber, fiber treatment, anti-shrinkage fiber, etc., can solve the problems of appearance and feeling

Active Publication Date: 2017-09-22
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regenerated collagen fibers have a stronger luster (brightness) than human hair fibers, and when used as fibers for hair, there is a problem that it is easy to cause a sense of discord in appearance.

Method used

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  • Manufacturing method of regenerated collagen fiber
  • Manufacturing method of regenerated collagen fiber

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0075] (Manufacturing example 1) Production of collagen stock solution (stock solution preparation process)

[0076] Cow's lower layer hide is used as raw material, and collagen is solubilized with alkali. Add the additives described in each example or comparative example to 1200 g of the obtained solubilized collagen (collagen content 180 g), dissolve it in an aqueous lactic acid solution, and make it pH 3.5, solid content concentration (composed of collagen and additives) Adjusted to 7.5% by weight aqueous collagen solution.

manufacture example 2

[0077] (Manufacturing example 2) Production of regenerated collagen fibers (spinning process)

[0078] The aqueous collagen solution obtained in Production Example 1 was subjected to stirring and defoaming treatment under reduced pressure, transferred to a piston-type spinning stock solution tank, and then left to stand under reduced pressure to perform defoaming. Next, the degassed aqueous collagen solution was squeezed out with a piston, quantitatively transported with a gear pump, and filtered with a sintered filter with a pore diameter of 45 μm. Then, the solubilized collagen aqueous solution after the filtration is passed through a spinning nozzle whose aperture is 0.212 mm and the number of holes is 275, and is ejected to a pH of 11 with sodium bicarbonate and sodium hydroxide at a spinning speed of 5 m / min. In a coagulation bath (25° C.) containing 17% by weight of sodium sulfate, regenerated collagen fibers were obtained.

manufacture example 3

[0079] (Manufacturing example 3) Water resistance treatment (water resistance process)

[0080] The regenerated collagen fibers obtained in Production Example 2 were immersed in an aqueous solution containing 17% by weight of sodium sulfate, 0.02% by weight of sodium hydroxide, and 0.83% by weight of epichlorohydrin at 25° C. for 5 hours, and then heated at 43° C. Under dipping for 3.5 hours, epoxy compound treatment was performed. Then, after washing the obtained regenerated collagen fibers with water, adjust the pH to 4.0 with sodium hydroxide and contain ZrO 2 Converted to 2.00% by weight of zirconium sulfate, expressed as Al 2 o 3 It was immersed in a treatment bath of 0.40% by weight of aluminum sulfate and 0.56% by weight of citric acid monohydrate in conversion for 6 hours. Then, the regenerated collagen fibers treated with the zirconium salt and the aluminum salt were washed with water, and immersed in a treatment bath (pH 11.0) containing 5.0% by weight of disodium...

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Abstract

The invention relates to a manufacturing method of regenerated collagen fiber of which gloss and heat discolouration are inhibited. The manufacturing method comprises the steps of raw collagen liquid preparation process, spinning process, water-resisting process and drying process. In the raw collagen liquid preparation process, liquefiable collagen is used as raw collagen liquid, and an aqueous solution which contains the liquefiable collagen and metal oxides is prepared. According to the manufacturing method, the glossy regenerated collagen fiber of which heat discolouration cannot happen when a high-temperature hair iron is used for styling can be obtained.

Description

technical field [0001] The present invention relates to a method for producing regenerated collagen fibers. More specifically, it relates to a method for producing regenerated collagen fibers that can be suitably used for hair, artificial fur, etc., with luster and thermal discoloration suppressed. Background technique [0002] The regenerated collagen fiber is a protein fiber with a special molecular structure derived from collagen, so it is similar to the feel, luster and touch of human hair, which is a natural protein fiber and has an extremely complex microstructure. Therefore, attempts have been made to use it as animal hair-like fibers such as hair fibers and artificial fur. [0003] The regenerated collagen fiber can be produced by the following method: generally use animal skin or bone as raw material, process it with alkali or enzyme to make water-soluble collagen, then extrude the water-soluble collagen into inorganic Spinning in saline solution or the like. How...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F4/00D06M13/11D06M11/56D06M11/57D06M11/71D06M101/14
CPCD01F1/10D01F4/00D06M11/56D06M11/57D06M11/71D06M13/11D06M2101/14D06M2200/45
Inventor 加藤知也刘天豹万杰
Owner KANEKA CORP
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