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Non-woven fabric and preparation method thereof and production device thereof

A technology of non-woven fabrics and equipment, which is applied in the field of non-woven fabric preparation, can solve the problems of limiting the diameter range of melt-blown fibers, poor dimensional stability of melt-blown fibers, and high energy consumption, etc., to achieve reduced compactness, low compactness, The effect of reducing energy consumption

Active Publication Date: 2013-06-19
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional melt-blown equipment needs to use compressed gas to assist in drawing the ejected fibers. On the one hand, the gas-assisted drafting of the melt-blown equipment consumes a lot of energy, which makes the production process consume a lot of energy; on the other hand, due to the compressed gas The flow rate is limited, which limits the diameter range of melt-blown fibers (usually above 10 microns), and makes the dimensional stability of melt-blown fibers poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Non-woven fabric and preparation method thereof and production device thereof

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preparation example Construction

[0021] The invention provides a method for preparing non-woven fabrics. The method includes: making the melt-blown fibers formed by a melt-blown device carry high-voltage static electricity, and mixing the melt-blown fibers with high-voltage static electricity and artificial staple fibers to obtain composite fibers , and then collect the composite fibers and form a nonwoven fabric.

[0022] According to the method of the present invention, the melt-blown fibers formed by the melt-blown device are charged with high-voltage static electricity, so that the diameter of the melt-blown fibers can be collected within a controllable range, and under the action of high-voltage static electricity, the Melt-blown fibers can be split and drawn to nano-scale fibers, thereby reducing the density of the final non-woven fabric, thereby improving the sound-absorbing and sound-insulating effects of the non-woven fabric.

[0023] According to the method of the present invention, making the melt-...

Embodiment 1

[0041] This embodiment is used to illustrate the non-woven fabric of the present invention, its preparation method and production equipment.

[0042] The structure of non-woven fabric production equipment is as follows:

[0043] Composed of a melt-blowing device 1, a high-voltage electrostatic generator 2, a purging device 3, an upper metal roller 41a, a lower metal roller 41b, and a stretching and winding device (not shown), the melt-blowing device 1 has a twin-screw extruder Machine 11, metering pump 12 and melt-blown die head 13, melt-blown die head 13 has multiple rows of spinneret holes arranged in parallel; high-voltage electrostatic generator 2 is electrically connected to melt-blown die head 13; purge device 3 has a feeding device , blower and air duct, the angle between the opening direction of the air duct and the opening direction of the melt blown die head 13 is 15°; the upper metal roller 41a and the lower metal roller 41b are all grounded, and the minimum distanc...

Embodiment 2

[0049] This embodiment is used to illustrate the non-woven fabric of the present invention, its preparation method and production equipment.

[0050] The non-woven fabric was prepared according to the method of Example 1, except that the angle between the opening direction of the air duct and the opening direction of the melt-blown die head 13 was set to 48°, thereby making a non-woven fabric A2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a preparation method for non-woven fabric and a non-woven fabric production device used for performing the method. The method comprises enabling melt-blown fiber formed through a melt-blown device to have high voltage static electricity, mixing the melt-blown fiber with the high voltage static electricity with artificial short fiber, obtaining composite fiber, collecting the composite fiber and forming the non-woven fabric. The non-woven fabric prepared through the non-woven fabric production device and according to the preparation method for the non-woven fabric is low in density so that the non-woven fabric has improved sound absorption and insulation effects.

Description

technical field [0001] The invention relates to a method for preparing non-woven fabrics, non-woven fabrics prepared by the method, and non-woven fabric production equipment. Background technique [0002] Non-woven sound-absorbing materials for automobiles have been widely used in the ceiling, floor and center pillars of automobile interiors to absorb the noise generated by the automobile power system, transmission system, braking system and air conditioning system, and to shield A certain degree of external noise, such as tire and road friction noise. The sensory comfort of the occupants depends largely on how quiet the interior is. Generally speaking, high-end cars are often much better than mid- and low-end cars in terms of sound absorption and sound insulation. One reason is that high-end cars use more sound-absorbing and sound-insulating materials, and the transmission of sound sources in the car has been carefully analyzed and simulated, thereby optimizing the placem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4382
Inventor 鲁遥
Owner BYD CO LTD
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