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Dope Dyeing Process of Polyester Fiber Before Spinning by Solvent Carrier

A solvent carrier, polyester fiber technology, applied in the preparation of spinning solution, feeding solution to spinneret, etc., can solve the problems of difficult small batch, multi-variety production, limited color brightness, consumption environment, etc. The effect of short time, high color fastness and weather resistance, and low mixing temperature

Inactive Publication Date: 2016-08-31
DALIAN SYNTHETIC FIBER RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: in the melt direct spinning production line, it is difficult to realize small batch and multi-variety production; when changing varieties, more raw materials will be consumed to clean up the staining equipment; High-temperature processing (masterbatch manufacturing and pre-spinning melting), so there are certain restrictions on the requirements for dyes and the brightness of the product; in addition, a certain amount of consumption and environmental impact will also occur during the production of masterbatches. Pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Dye: The solvent is 1:8 (weight ratio) to prepare the dye stock solution that can be used for the coloring of the stock solution before spinning. Through the injection device, a certain proportion of the dye stock solution is evenly injected into the polyester melt in the pipeline. The temperature of the dye stock solution is 100°C, and the stirring speed is 400 rpm. The mixture of polyester melt and dye stock solution passes through mixing elements with several sets of static mixers to uniformly mix the dye and polyester melt. The metering injection device consists of several groups of metering injection pumps, each group of metering injection pumps corresponds to a set of mixing components, and the dye stock solution in the several groups of metering injection pumps is the same dye stock solution. After being accurately measured by the melt metering pump, it is sent to the spinning assembly for spinning to produce colored silk. After the test, the dye content in the f...

Embodiment 2

[0014] Dye: The solvent is 1:6 (weight ratio) to prepare the dye stock solution that can be used for the coloring of the stock solution before spinning. Through the injection device, a certain proportion of the dye stock solution is evenly injected into the polyester melt in the pipeline. The temperature of the dye stock solution is 150°C, and the stirring speed is 600 rpm. The mixture of polyester melt and dye stock solution passes through mixing elements with several sets of static mixers to uniformly mix the dye and polyester melt. The metering injection device consists of several groups of metering injection pumps, each group of metering injection pumps corresponds to a set of mixing components, and the dye stock solution in the several groups of metering injection pumps is the same dye stock solution. After being accurately measured by the melt metering pump, it is sent to the spinning assembly for spinning to produce colored silk. After the test, the dye content in the f...

Embodiment 3

[0016] Dye: The solvent is 1:3 (weight ratio) to prepare the dye stock solution that can be used for the coloring of the stock solution before spinning. Through the injection device, a certain proportion of the dye stock solution is evenly injected into the polyester melt in the pipeline. The temperature of the dye stock solution is 100°C, and the stirring speed is 700 rpm. The mixture of polyester melt and dye stock solution passes through mixing elements with several sets of static mixers to uniformly mix the dye and polyester melt. The metering injection device consists of several groups of metering injection pumps, each group of metering injection pumps corresponds to a set of mixing components, and the dye stock solutions in the several groups of metering injection pumps are dye stock solutions prepared by different dyes. After being accurately measured by the melt metering pump, it is sent to the spinning assembly for spinning to produce colored silk. After the test, the...

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PUM

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Abstract

The invention discloses a polyester fiber solvent carrier stock solution dyeing technology before spinning, and belongs to the field of chemical fiber production. The polyester fiber solvent carrier stock solution dyeing technology before spinning comprises the following steps: (1) dye and a solvent carrier are mixed into uniform dye stock solution used for solution dyeing before spinning; (2) the dye stock solution is poured into a polyester melt in a pipeline through a metering injection device, and is mixed; (3) the polyester melt and the dye stock solution are evenly mixed through a mixing assembly; and (4) after being mixed, the polyester melt and the dye stock solution enter a melt metering device, and after being metered, the polyester melt and the dye stock solution are sent a spinning assembly to spin. Compared with a maternal dyeing method, the polyester fiber solvent carrier stock solution dyeing technology has the advantages of being pollution-free, environment-friendly and energy-saving because the production process is short, and the mixing temperature (<=150 DEG C) of the dye solution is low.

Description

Technical field [0001] The invention relates to a solvent carrier dope coloring process before spinning of polyester fiber, which belongs to the field of chemical fiber production. Background technique [0002] The coloring technology of polyester fiber currently mainly adopts the matrix coloring method, that is, mixing a certain proportion of colored chips into the natural chip, in short, 30% pigment (dye) powder and 70% polyester powder are mixed and granulated , The "color masterbatch" is produced, which is melted together with the natural chips during spinning and input to the spinning machine for direct spinning of colored fibers. This method is currently the main process route used in the production of colored silk. Its advantages are: less staining of equipment, convenient use, and easy color change. However, it is necessary to manufacture "color masterbatch" using pigment powder and polyester powder as raw materials, and add the color masterbatch in proportion during sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D1/02D01D1/06
Inventor 高志勇郭群王世文汪丽霞张传明张锡春王艺欣张恒轩张凯于维才
Owner DALIAN SYNTHETIC FIBER RES & DESIGN INST