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Non-dyed regenerated polyester staple fiber preparation process

A preparation process, technology of recycled polyester, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problems of poor dyeing effect, agglomeration, and uneven dispersion of colored polyester fibers, achieve good dyeing effect, prevent mutual agglomeration, and disperse uniform effect

Active Publication Date: 2020-02-11
HANGZHOU BENMA CHEMFIBER & SPINNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to improper selection of existing pigments and dispersants, the pigments will be agglomerated and unevenly dispersed when they are dissolved in molten polyester in a molten state, resulting in poor dyeing effect of colored polyester fibers.

Method used

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  • Non-dyed regenerated polyester staple fiber preparation process
  • Non-dyed regenerated polyester staple fiber preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to figure 1 , a preparation process of non-dyed regenerated polyester staple fiber, the bottle flakes are subjected to the following steps:

[0041] S1: Raw material preparation. The bottle flakes of the recovered mineral water bottles are repeatedly cleaned, sterilized, and then cut and crushed.

[0042] S2: pre-processing. Sorting the materials after S1 treatment, and then put the materials into the rotary drum vacuum dryer. After the feeding is completed, start to heat up in the drum at a rate of 1.5°C / min, and heat up to 60°C for heat preservation. After that, heat transfer oil is introduced and the drum is started at the same time. At the same time, start the vacuum pump to evacuate the drum, and keep the vacuum at 70Pa, the drying time is 10h, and the moisture content of the bottle flakes is controlled below 0.01%.

[0043] S3: heating and melting.

[0044] First prepare the masterbatch. Put the raw materials of the masterbatch into the slurry tank in no...

Embodiment 24

[0071] Embodiment 24: The difference from Example 1 is that in the step of S6 oiling, the chemical composition of the oil agent is 33 parts by weight of stearylamine polyoxyethylene ether, 32 parts of lauryl alcohol and aminopropanol kojic acid phosphoric acid 51 parts of ester.

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Abstract

The invention relates to the manufacturing field of regenerated chemical fibers, and discloses a non-dyed regenerated polyester staple fiber preparation process, which includes the following steps: S1. preparing raw materials; S2. pretreatment; S3. heating and melting; and mixing the materials treated in S2 with color masterbatches, and then heating and melting together, wherein the color masterbatches comprise the following raw materials in parts by weight: 70-90 parts of dimethyl terephthalate, 20-40 parts of propylene glycol, 120-150 parts of pigments and 110-130 parts of dispersants; and the dispersants comprise polyethylene wax and cetyltrimethylammonium bromide, and the mass ratio of the polyethylene wax to the cetyltrimethylammonium bromide is 4: 1; S4. spinning; S5. cooling and forming; S6. oiling; S7. winding and bundling; and S8. crimping and cutting; After the above steps, the non-dyed regenerated polyester staple fiber is prepared. The pigments can be prevented from agglomerating when dissolved in the molten polyester in the molten state, so that the pigment can be dispersed evenly, and finally the dyed colored polyester has a better dyeing effect.

Description

technical field [0001] The invention relates to the field of manufacturing regenerated chemical fibers, more specifically, it relates to a preparation process of non-dyed regenerated polyester staple fibers. Background technique [0002] Regenerated polyester staple fiber refers to the use of polyester cloth, waste polyester bottle flakes, spinning waste, foam material, pulp, etc. as raw materials. The waste and old bottle flakes are crushed, cleaned, mixed with various materials, and then dried. Melt extrusion, spinning, winding, bundling, drawing, crimping, relaxation heat setting, and cutting to form polyester staple fibers of different lengths. The use of recycled polyester can improve the current shortage of textile raw materials in my country, and the processing method of waste utilization is in line with the concept of environmental protection. [0003] At present, there are two main types of dyeing methods for polyester fiber textiles. One is to weave polyester fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/04D01F1/10D01F11/08C08G63/183D06M15/53D06M13/144D06M13/453D06M13/463D06M15/643D06M101/32
CPCD01F6/92D01F1/04D01F1/10D01F11/08C08G63/183D06M15/53D06M13/144D06M13/453D06M13/463D06M15/643D06M2101/32
Inventor 许国良
Owner HANGZHOU BENMA CHEMFIBER & SPINNING
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