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Preparation method of non-dyeing nylon six-color silk

A nylon and colored yarn technology, applied in the field of spinning, can solve the problems of low solid measurement accuracy and precision, uneven mixing of the screw mixing head, etc., and achieves loose use environment requirements, good electromagnetic interference resistance, and flexible technology. good control effect

Active Publication Date: 2017-02-08
YIWU HUADING NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the two are: 1. The accuracy and precision of solid metering are low; 2. The screw mixing head is unevenly mixed

Method used

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  • Preparation method of non-dyeing nylon six-color silk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of non-dyed nylon 6-color silk, comprising the following steps:

[0033] 1) Mixing: Add the pre-dried nylon 6 slices and masterbatch to the mixing device for mixing, wherein the masterbatch accounts for 3% of the weight.

[0034] 2) Melting: the polyamide 6 slices and the color masterbatch are mixed and melted under the heating and shearing of the screw extruder to obtain a spinning melt. Nylon 6 slices and color masterbatch are extruded in five stages in the screw extruder, and the temperatures are 245°C, 255°C, 265°C, 268°C, and 262°C.

[0035] 3) Dynamic mixing: the spinning melt flows out of the screw extruder and enters a dynamic mixing device for dynamic mixing.

[0036] 4) Spinning: The spinning melt enters the spinning box for spinning, and the monofilament is ejected from the spinneret.

[0037] 5) Bundle oiling: the monofilaments arrive at the bundle oiling point for bundling and oiling on the surface of the bundle. Wherein, when oiling...

Embodiment 2

[0041] A preparation method of non-dyed nylon 6-color silk, comprising the following steps:

[0042] 1) Mixing: Add the pre-dried nylon 6 slices and masterbatch to the mixing device for mixing, wherein the masterbatch accounts for 2% of the weight.

[0043] 2) Melting: the polyamide 6 slices and the color masterbatch are mixed and melted under the heating and shearing of the screw extruder to obtain a spinning melt. Nylon 6 chips and color masterbatch are extruded in five stages in the screw extruder, and the temperatures are 240°C, 250°C, 260°C, 265°C, and 260°C.

[0044] 3) Dynamic mixing: the spinning melt flows out of the screw extruder and enters a dynamic mixing device for dynamic mixing.

[0045] 4) Spinning: The spinning melt enters the spinning box for spinning, and the monofilament is ejected from the spinneret.

[0046]5) Bundle oiling: the monofilaments arrive at the bundle oiling point for bundling and oiling on the surface of the bundle. Wherein, when oiling, ...

Embodiment 3

[0050] A preparation method of non-dyed nylon 6-color silk, comprising the following steps:

[0051] 1) Mixing: Add the pre-dried nylon 6 slices and masterbatch to the mixing device for mixing, wherein the masterbatch accounts for 4% by weight.

[0052] 2) Melting: the polyamide 6 slices and the color masterbatch are mixed and melted under the heating and shearing of the screw extruder to obtain a spinning melt. Nylon 6 chips and color masterbatch are extruded in five stages in the screw extruder, and the temperatures are 250°C, 260°C, 270°C, 270°C, and 265°C.

[0053] 3) Dynamic mixing: the spinning melt flows out of the screw extruder and enters a dynamic mixing device for dynamic mixing.

[0054] 4) Spinning: The spinning melt enters the spinning box for spinning, and the monofilament is ejected from the spinneret.

[0055] 5) Bundle oiling: the monofilaments arrive at the bundle oiling point for bundling and oiling on the surface of the bundle. Wherein, when oiling, the...

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Abstract

The invention relates to the field of spinning and discloses a preparation method of non-dyeing nylon six-color silk. The preparation method comprises the following steps: (1) mixing, namely adding the pre-dried polyamide-6 granula and color masterbatch into a mixing device and mixing; (2) melting, namely melting the mixed polyamide-6 granula and color masterbatch in the heating shearing of a screw extruder to obtain a spinning melt; (3) carrying out dynamic mixing: namely enabling the spinning melt to flow out of the screw extruder and enter a dynamic mixing device for dynamic mixing; (4) spinning, namely feeding the spinning melt into a spinning box body for spinning, and ejecting monofilament from a spinneret plate; (5) carrying out clustering oiling, namely clustering when the monofilament reaches a clustering oiling point and oiling the tow surface; (6) carrying out hot stretching, namely guiding the oiled tow into a stretching hot roller for hot stretching; and (7) winding, namely pre-interlacing the tow after the hot stretching, and finally winding for formation. According to the method provided by the invention, the prepared non-dyeing nylon six-color silk has good controllability and causes little pollution, and the basic performance of the nylon six-color silk can be improved.

Description

technical field [0001] The invention relates to the field of spinning, in particular to a method for preparing non-dyed nylon 6-color yarn. Background technique [0002] Nylon fiber has good moisture absorption, softness and good elasticity. It is suitable for underwear, sportswear and other fabrics, and has good wearing comfort. [0003] In the prior art, nylon fibers are generally dyed after spinning, but this method will generate a large amount of printing and dyeing wastewater, and the treatment of these printing and dyeing wastewater is difficult, the treatment cost is high, and the impact on the environment is also relatively large . Due to the pressure of environmental protection and national industrial policies, it has become an important trend in the development of the industry to develop dyed yarn production and reduce the impact of printing and dyeing on the environment. [0004] At present, the domestic process for adding PA6 color masterbatch mainly refers to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/096D01D5/16D01D1/00D01D1/04D02J1/08D01F6/90D01F1/02D01F11/08D06M13/352D06M101/34
CPCD01D1/00D01D1/04D01D5/08D01D5/096D01D5/16D01F1/02D01F6/90D01F11/08D02J1/08D06M13/352D06M2101/34
Inventor 封其都郝敬华刘朝新陈宽军
Owner YIWU HUADING NYLON
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