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A method for manufacturing airbag polyester industrial yarn

A technology of polyester industrial yarn and a manufacturing method, applied in the field of polyester industrial yarn manufacturing, can solve the problems of complicated drawing and heat-setting processes, and achieve the effects of reasonable dry heat shrinkage rate, low linear density deviation rate, and reduced orientation and crystallization.

Active Publication Date: 2014-10-01
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, although the manufacturing method of polyester industrial yarn for automobile airbags described in patent CN101634052B can replace nylon 66 fibers and reduce production costs, its stretching and heat setting processes are complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for manufacturing airbag polyester industrial yarn, the process flow is high-viscosity molten polyester raw material—measurement—spraying—cooling—oiling—stretching—heat setting—winding forming, wherein:

[0038] The high-viscosity molten polyester raw material refers to high-viscosity slices with an intrinsic viscosity of 1.1 dl / g.

[0039] The cooling includes four parts of slow cooling, pre-cooling, cooling in the windless zone and blowing cooling in turn;

[0040] The slow cooling refers to that the ambient temperature of the tow is 260°C, the temperature of the tow at the exit of the slow cooling zone is 280°C, and the slow cooling height is 250mm.

[0041] The pre-cooling refers to that the ambient temperature of the tow is 160° C., and the temperature of the tow at the outlet of the pre-cooling zone is 250° C.; the pre-cooling height is 40 mm.

[0042] The cooling in the windless zone means that the ambient temperature of the tow is 100° C., and the temp...

Embodiment 2

[0047] A method for manufacturing airbag polyester industrial yarn, the process flow is high-viscosity molten polyester raw material—measurement—spraying—cooling—oiling—stretching—heat setting—winding forming, wherein:

[0048] The high-viscosity molten polyester raw material refers to high-viscosity slices with an intrinsic viscosity of 1.05dl / g.

[0049] The cooling includes four parts of slow cooling, pre-cooling, cooling in the windless zone and blowing cooling in turn;

[0050] The slow cooling refers to that the ambient temperature of the tow is 300°C, the temperature of the tow at the exit of the slow cooling zone is 285°C, and the slow cooling height is 300mm.

[0051] The pre-cooling refers to that the ambient temperature of the tow is 260° C., and the temperature of the tow at the outlet of the pre-cooling zone is 260° C.; the pre-cooling height is 80 mm.

[0052] The cooling in the windless zone means that the ambient temperature of the tow is 160° C., and the temp...

Embodiment 3

[0057] A method for manufacturing airbag polyester industrial yarn, the process flow is high-viscosity molten polyester raw material—measurement—spraying—cooling—oiling—stretching—heat setting—winding forming, wherein:

[0058] The high-viscosity molten polyester raw material refers to high-viscosity chips with an intrinsic viscosity of 1.02dl / g.

[0059] The cooling includes four parts of slow cooling, pre-cooling, cooling in the windless zone and blowing cooling in turn;

[0060] The slow cooling refers to that the ambient temperature of the tow is 280°C, the temperature of the tow at the exit of the slow cooling zone is 282°C, and the slow cooling height is 275mm.

[0061] The pre-cooling refers to that the ambient temperature of the tow is 210° C., and the temperature of the tow at the outlet of the pre-cooling zone is 255° C.; the pre-cooling height is 60 mm.

[0062] The cooling in the windless zone means that the ambient temperature of the tow is 130° C., and the tempe...

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Abstract

The invention relates to a manufacturing method of safe airbag polyester industrial yarn. The mehtod is characterized in that the safe airbag polyester industrial yarn is manufactured by selection and control of cooling conditions; the process is as follows: highly viscous molten polyester raw materials, measurement, spinning, cooling, oiling, stretching, thermal setting and rolling for shaping. In order to reduce non-uniformity of the fiber and ensure safety of an airbag made from the polyester industrial yarn, according to the invention, a pre-cooling device is a hollow ladder ring belt consisting of upper and lower parts, on which through holes with diameter of 5-10mm are evenly distributed; and the distribution density of holes on the upper part is at least 1.5 times higher than that of holes on the lower part. The physical indexes of the obtained polyester industrial yarn are as follows: the breaking strength CV value is less than or equal to 2.5%, the breaking elongation CV value is less than or equal to 7.0%, the denier of mono-filament is 2-6dtex, and the dry-heat shrinkage is 3.5+ / -0.5% under the test conditions of 177 DEG C and 0.05 cN / dtex.

Description

technical field [0001] The invention relates to a production method of polyester industrial yarn, in particular to a production method of airbag polyester industrial yarn, belonging to the field of polyester industrial yarn manufacturing. Background technique [0002] Polyester is the most important variety of chemical fibers. It has excellent performance and is widely used. It not only occupies an important position in clothing materials, but also shows strong vitality in industrial supplies. Polyester industrial yarn is widely used in tire cords, safety belts, airbags, conveyor belts, and high-pressure resin reinforcement materials due to its high strength, large modulus, small elongation, heat resistance, impact resistance, and good fatigue resistance. . [0003] Automobile airbags have been widely used in automobiles at present. In order to enable the automobile to effectively protect the safety of the occupants in the event of severe collisions, the airbags must have g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/088D01D5/092D01D13/00
Inventor 王丽丽李文刚汤方明王山水尹立新杨大矛王辉
Owner JIANGSU HENGLI CHEM FIBER