Spinning assembly for production of industrial filaments used for nylon-66 air bags

A technology for spinning components and airbags, which is applied in the field of synthetic fiber production devices, can solve the problems of short service life of components, high cost of filter materials, and high leakage rate, so as to reduce production costs, reduce wool and end breakage rates, and porosity. high effect

Active Publication Date: 2018-04-13
SHENMA BOLIEMAI PINGDINGSHAN AIR BAG YARN MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems such as short service life of components, high leakage rate, high cost of component filter materials, many wool filaments, and low yield, which are problems in the production of industrial filaments for nylon 66 airbags. The industry has not solved this problem for many years.

Method used

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  • Spinning assembly for production of industrial filaments used for nylon-66 air bags
  • Spinning assembly for production of industrial filaments used for nylon-66 air bags
  • Spinning assembly for production of industrial filaments used for nylon-66 air bags

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: In this embodiment, if figure 1 As shown, a spinning assembly for the production of industrial filaments for nylon 66 airbags, including a sand box and a spinning assembly shell, one end of the sand box is open, and the middle part of the other end of the sand box is provided with a melt inlet , the sand box is provided with a filter screen, metal sand, the first metal fiber felt, a distribution plate, a second metal fiber felt, a first sealing ring, and a spinneret sequentially from the melt inlet end, and the distribution plate and There is a gap between the inner walls of the sand box, the first sealing ring is an L-shaped sealing ring including vertical sides and transverse sides, and the vertical side of the first sealing ring is clamped between the distribution plate and the inner wall of the sand box In the gap, the first sealing ring presses the second metal fiber felt onto the distribution plate. The axial direction of the spinneret is set in a st...

Embodiment 2

[0041] Embodiment two: this embodiment is basically the same as embodiment one, the difference is that metal sand composition (weight percentage): C-0.06%, Cr-37.0%, Fe-57.5%, Ni-0.68%, Si-4.76 %; the nominal specification of metal sand is 20-35 mesh (of which the ratio of 20-30 mesh is 85.0%, the ratio of 30-40 mesh is 10.0%, the ratio of 40-50 mesh is 3.9%, the ratio of 50-100 mesh is 1.1%); the specification of metal fiber felt is 300% head. Produce nylon 66 industrial filaments for airbags with a variety of 350dtex and a winding speed of 2800m / min.

[0042] The component usage effect is shown in Table 2:

[0043] The test result of table 2 embodiment 2

[0044]

[0045] Note: The cost of conventional multi-layer metal filter components is 180 yuan / piece, and the component life cycle is 8 days

Embodiment 3

[0046] Embodiment three: this embodiment is basically the same as embodiment one, the difference is that the metal sand composition (percentage by weight): C-0.06%, Cr-37.0%, Fe-57.5%, Ni-0.68%, Si -4.76%;

[0047] The nominal specification of metal sand is 45-60 mesh (the ratio of 45-60 mesh is 95.0%, the ratio of 60-90 mesh is 4.0%, and the ratio of 90-100 mesh is 1.0%); the specification of metal fiber felt is 300 mesh. Produce nylon 66 industrial filaments for airbags with a variety of 350dtex and a winding speed of 2800m / min.

[0048] The effect of using components is shown in Table 3:

[0049] The test result of table 3 embodiment 3

[0050]

[0051]

[0052] Note: The cost of conventional multi-layer metal filter components is 180 yuan / piece, and the component life cycle is 8 days

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Abstract

The invention discloses a spinning assembly for production of industrial filaments used for nylon-66 air bags. The spinning assembly comprises a sand box and a spinning assembly shell, one end of thesand box is open, and a melt inlet is formed in the other end of the sand box. A filter screen, metal sand, a first metal fiber mat, a distributing plate, a second metal fiber mat, an L-shaped first seal ring and a spinneret plate are sequentially arranged in the sand box from the melt inlet end, the second metal fiber mat is compressed to the distributing plate by the first seal ring, the spinneret plate is set into a stepped shape in the axis direction, the diameter of the end, adjacent to the second fiber mat, of the spinneret plate is small, the end, adjacent to the second fiber mat, of the spinneret plate is inserted into the sand box which is inserted into the spinning assembly shell, one end of the spinning assembly shell is open, an internal thread is machined on the inner wall ofthe opening end, an annular flange with an opening in the middle is arranged at the other end of the spinning assembly shell, and the inner side end surface of the annular flange makes contact with the edge of the spinneret plate in the sand box. By means of the assembly, the quality of the industrial filaments used for the nylon-66 air bags is obviously improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of synthetic fiber production devices, in particular to a spinning component used for the production of industrial filaments for nylon 66 airbags. Background technique [0002] Nylon 66 industrial filaments for airbags are mainly used in the production of automotive airbags and safety belts. As a high-grade wire used in automobile safety systems, airbag wire is a high-tech, high-value-added cutting-edge product, and its production process is strictly controlled. The quality requirements of airbag yarn are particularly strict, and one of its main indicators requires that the number of wool yarns per yarn tube is one-twentieth of that of ordinary products. If an enterprise has the ability to produce airbag yarn, it can prove that it has entered the list of strong chemical fiber enterprises in the world. With the rapid development of the automobile industry in recent years, the demand for high-quality airbag filaments ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/10C22C38/34C22C38/40
CPCC22C38/34C22C38/40D01D1/106Y02P70/62
Inventor 李东平武冰康伟峰
Owner SHENMA BOLIEMAI PINGDINGSHAN AIR BAG YARN MFG CO LTD
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