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Dyeing process and dyeing apparatus for collagen fiber regenerated leather

A technology of collagen fiber and dyeing device, which is applied in the direction of dyeing method, textile processing machine accessories, textile material treatment, etc., can solve problems that have not been seen before, and achieve the effect of improving dyeing effect and uniform dyeing effect

Active Publication Date: 2015-04-15
JIANGYIN JUNHUA TEXTILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the help of ultrasonic waves, dyeing and floating color removal on the surface can be achieved at the same time, so as to obtain a uniform color, and there is no corresponding technical inspiration in the published patents and non-patent literature.

Method used

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  • Dyeing process and dyeing apparatus for collagen fiber regenerated leather
  • Dyeing process and dyeing apparatus for collagen fiber regenerated leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The invention relates to a dyeing process of collagen fiber regenerated skin, comprising the following steps:

[0034] (1) Dyeing treatment:

[0035](1-1) One dyeing: Dye the collagen fiber regenerated leather blank in the first dyeing bath placed in the ultrasonic sound field for 0.5 to 5 minutes, wherein the first dyeing bath contains dyeing agent, coloring penetrating agent and tannin In the process, the concentration of the dyeing agent is 0.1~12%, the pH value is adjusted to 3~5 with ammonia water, the temperature of the bath liquid is 30~98°C, and the ultrasonic power is 1000~2000W; Floating color on the surface; finally extrude the skin until the liquid content in the skin is 30-55%, and return the extruded liquid to the first dyeing bath;

[0036] (1-2) Second dyeing: Dye the collagen fiber regenerated skin base after the first dyeing in the second dyeing bath placed in the ultrasonic sound field for 0.5 to 5 minutes, wherein the second dyeing bath contains dye...

Embodiment 2

[0045] The invention relates to a dyeing process of collagen fiber regenerated skin, comprising the following steps:

[0046] (1) Dyeing treatment:

[0047] (1-1) One dyeing: Dye the collagen fiber regenerated leather blank in the first dyeing bath placed in the ultrasonic sound field for 0.5 to 5 minutes, wherein the first dyeing bath contains dyeing agent, coloring penetrating agent and tannin , the concentration of the dyeing agent is 8%, the pH value of the bath liquid is adjusted to 3~5 with ammonia water, the temperature of the bath liquid is 40~45°C, and the ultrasonic power is 1800W; color; finally extrude the skin until the liquid content in the skin is 30-55%, wherein the extruded liquid is returned to the first dyeing bath;

[0048] (1-2) Second dyeing: Dye the collagen fiber regenerated leather blank in the second dyeing bath placed in the ultrasonic sound field for 0.5 to 5 minutes, wherein the second dyeing bath contains dyeing agent, coloring penetrating agent ...

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Abstract

The invention relates to a dyeing process for collagen fiber regenerated leather. The process successively comprises at least two dyeing treatment, at least one fixation treatment, at least one handfeel modification and drying treatment, wherein dyeing, fixation and handfeel modification are all carried out in an supersonic sound field, so a coloring agent, a fixing agent and a handfeel modifier can effectively penetrate into collagen fiber bundles so as to obtain a more uniform dyeing effect. The concentration of the coloring agent in sequentially used bath liquids increasingly decreases, temperatures of the bath liquids gradually increase, the power of the supersonic sound field increasingly decreases, so bath liquids with high concentration can infiltrate into a leather blank at first, and flooding which is serious in the process of filtration can be eliminated in subsequent dipping in liquids with low concentration; thus, flooding generated in subsequent procedures increasingly decreases, and uniform dyeing of the leather blank is realized. Moreover, surface flooding is eliminated in virtue of a brush of a brush roller in the invention. The invention also relates to a dyeing apparatus capable of realizing continuous uniform dyeing of cloth and leather.

Description

technical field [0001] The invention relates to a manufacturing method of a nonwoven material and a textile machine, in particular to a dyeing process of collagen fiber regenerated skin and a dyeing device for dyeing collagen fiber regenerated skin. Background technique [0002] Collagen fiber regenerated leather has been widely used because of its cheap raw material and performance close to that of genuine leather. In order to meet the needs of market diversity, the collagen fiber regenerated skin needs to be dyed and other treatments. [0003] The dyeing process of existing leather draws lessons from the dyeing methods of traditional natural fibers such as cotton and wool and man-made fibers such as polyester and nylon, and generally includes a dyeing process, a color-fixing process and a drying process in sequence. For the dyeing of collagen fiber bundles or collagen fiber regenerated leather, the dyeing effect of this conventional dyeing process is not ideal, and its re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P5/20D06P3/04D06P5/02D06B13/00D06B23/00
CPCD06B13/00
Inventor 朱晓华
Owner JIANGYIN JUNHUA TEXTILE TECH
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