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Stripping method of PLA fibre

A fiber and color stripping liquid technology, applied in the field of polylactic acid fiber stripping, can solve the problem that PLA fiber cannot be re-dyed, and achieve the effect of avoiding strong damage

Inactive Publication Date: 2012-10-17
CHINA TEXTILE ACAD JIANGNAN BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that PLA fiber cannot be re-dyeed all the time, to make up for the color difference and cylinder difference that PLA fiber is prone to appear in the dyeing process, thereby providing a stripping method suitable for PLA fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1: Carry out padding stripping to light-colored yellow PLA fiber fabric

[0075] (1) Process formula:

[0076] Stripping solution: sodium thiosulfate 5g / L JFC 5g / L

[0077] Detergent FK-9503: 5g / L

[0078] (2) Stripping steps:

[0079] Padding and stripping solution (one dipping and one padding)→steaming (95°C, 10min)→hot washing (90°C)→detergent washing (75°C)→water washing (room temperature)→drying.

Embodiment 2

[0080] Embodiment 2: light-colored blue PLA fiber fabric is dipped and stripped

[0081] (1) Process formula:

[0082] Stripping solution: sodium thiosulfate 1.5g / L JFC 1g / L

[0083] Detergent FK-9503: 2g / L

[0084] (2) Stripping steps:

[0085] Immerse in stripping solution (85°C, 25min) → hot wash (85°C) → detergent wash (85°C) → water wash (room temperature) → dry.

Embodiment 3

[0086] Embodiment 3: Carry out padding stripping to dark pink PLA fiber fabric

[0087] (1) Process formula:

[0088] Stripping solution 1: alkylamine polyoxyethylene 25g / L

[0089] Stripping solution two: sodium thiosulfate 8g / L JFC 8g / L

[0090] Detergent: Detergent FK-9503 9g / L

[0091] (2) Stripping steps:

[0092] Padding and stripping solution one (one dipping and one rolling) → steaming (98°C, 20min) → water washing (room temperature) → padding and stripping solution two (one dipping and one rolling) → steaming (98°C, 10min) → heating Wash (90°C)→detergent wash (85°C)→water wash (room temperature)→dry.

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Abstract

The invention discloses a stripping method of a PLA fibre, belonging to the technical field of after finishing processes of fabrics. The method can be used for processing PLA fabrics in light color or medium deep color and comprises the following steps of: firstly, striping the dye by using sodium thiosulfate or tri-sodium dodecyl sulfate phenyl phosphor and penetrant JFC as the stripping liquid,wherein the adding amount of sodium thiosulfate is 1-10g / L, the adding amount of the tri-sodium dodecyl sulfate phenyl phosphor is 3-20g / L, and the adding amount of the penetrant JFC is 1-10g / L; and then cleaning the dye floating on the surface of the fabrics by using detergent FK-9503, wherein the adding amount of the detergent FK-9503 is 1-10g / L. The invention can realize successful stripping of the PLA fibre fabrics, avoids great damage to the PLA fibre, and solves the problem that the PLA can not be redyed.

Description

Technical field: [0001] The invention relates to a method for stripping polylactic acid (PLA) fibers, which belongs to the technical field of textile post-finishing technology. Background technique: [0002] PLA fiber (polylactic acid) is a fiber made from corn, sweet potato, wheat and other starch-containing raw materials, which are converted into lactic acid by fermentation, and then polymerized and spun. It not only has excellent physical properties and wearability, but also is biodegradable. It is a new type of environmentally friendly fiber that can be completely recycled naturally, and it is also the only synthetic fiber that does not rely on petroleum resources. [0003] At present, due to the low glass transition temperature of PLA fiber, and there is no special dye for PLA fiber on the market, due to the unique physical and chemical properties of PLA fiber, the sensitivity to temperature, pH value, and dye is relatively large during the dyeing process. In the mass ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P5/02D06P5/04D06P5/08D06P3/52
Inventor 庄小雄姚登辉杨国荣
Owner CHINA TEXTILE ACAD JIANGNAN BRANCH
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