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Manufacturing method of synthetic fiber needled felt with diversion function

A technology of synthetic fibers and production methods, which is applied in the direction of heating/cooling fabrics, non-woven fabrics, textiles and papermaking, etc., can solve the problems of poor resin longitudinal conductivity, affecting the uniformity of cotton webs, and poor felting of cotton webs. It achieves the effects of fast diversion speed, good opening effect and good felting property

Inactive Publication Date: 2012-06-20
CHANGZHOU TIANMA GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, there is usually only one opening process. The disadvantage of this is that the fiber blocks are fed into the carding process without sufficient opening, which directly affects the uniformity of the cotton web, resulting in the formation of cloud spots on the surface of the final finished felt. Poor uniformity, uneven thickness
In addition, there is only one acupuncture process. The disadvantages of this are: poor felting of the cotton web, uneven felt surface, poor appearance, soft needle felt, and unwinding prone to unexpected elongation
In addition, needle punching is performed directly after laying the net. The disadvantage of this is that the fibers are basically arranged horizontally in the felt, there are few longitudinal fibers, and the vertical and horizontal strength ratio is about 1:10. The finished product is easily deformed and elongated in the longitudinal direction, and the final resin poor conductivity

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0013] The synthetic fiber that present embodiment adopts is the 100% polyester fiber that monofilament number is 50D, and length is 64mm. The production method is as follows:

[0014] ①The synthetic fibers are fed into the bale opener for pre-opening, that is, the larger fiber blocks are first broken into smaller fiber blocks by the cotton leveling beater, and then the smaller fiber blocks are broken into loose fibers by the opening beater Then the loose fiber balls are fed into the opener by the conveyor belt for the second opening, that is, they are opened into uniform loose fibers by the opening cylinder.

[0015] ②After opening, the uniform loose fibers are fed into the carding machine through the mat cotton output from the cotton box, and the loose fibers are carded through the carding unit (five groups in total) composed of working rollers, stripping rollers and cylinders, and then through the upper and lower Double doffer stripping outputs the fibers into a single lay...

Embodiment 2～ Embodiment 6）

[0021] The preparation method of each embodiment is basically the same as that of Example 1, and the differences are shown in Table 1:

[0022] synthetic fiber Draft Ratio single weight after drafting heat setting temperature Example 1 100% polyester, 50D, 64mm 1∶5 120g / m 2 120℃ Example 2 100% polyester, 75D, 76mm 1∶3 180g / m 2 150℃ Example 3 100% polyester, 90D, 76mm 1∶8 250g / m 2 100℃ Example 4 100% polypropylene fiber, 50D, 64mm 1∶6 120g / m 2 105℃ Example 5 100% polypropylene fiber, 75D, 76mm 1∶2 180g / m 2 90℃ Example 6 100% polypropylene fiber, 90D, 76mm 1∶5 250g / m 2 120℃

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Abstract

The invention discloses a manufacturing method of a synthetic fiber needled felt with a diversion function. The manufacturing method comprises the steps of: sequentially carrying out two opening working procedures, a carding working procedure, a lapping working procedure, a drawing working procedure, two needling working procedures and a thermoforming working procedure on the synthetic fiber so as to obtain the synthetic fiber needled felt with the diversion function, wherein the two opening working procedures comprise the steps of: firstly feeding the synthetic fiber to a bale opener, sequentially beating by a cotton evening beater and an opening beater to form loosened fiber agglomerates, then feeding the fiber agglomerates into an opener, and opening by an opening cylinder to form uniform bulk fiber; the drawing working procedure comprises the step of longitudinally drawing the fiber net formed after lapping with four groups of drawing mechanisms, and the drawing ratio is 1:2-1:8; and the two needling working procedures comprise the steps of: pre-needling the drawn fiber net from top to bottom, and principally needling the fiber net from bottom to top. The synthetic fiber needled felt with the diversion function prepared by the method is good in uniformity, controllable in thickness, not easy in deformation and high in diversion speed.

Description

technical field [0001] The invention relates to a method for making a nonwoven fabric, in particular to a method for making a synthetic fiber needle-punched felt with a flow-guiding function. Background technique [0002] Fiber reinforced material is a new type of composite material with excellent properties such as light weight, high strength, corrosion resistance, heat preservation, insulation, sound insulation, and waterproof. With the rapid development of closed molding processes such as resin transfer molding (RTM), vacuum assisted resin transfer molding (VARTM), and resin impregnation molding (SCRIMP) in recent years, higher requirements have been put forward for fiber reinforced materials. The most important point is to try to use fabrics with high permeability and good wettability to resin. Therefore, a hollow guide fiber layer reinforcement material appeared. [0003] Hollow diversion fiber layer reinforcement is a kind of reinforcement material of FRP composite m...

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): D04H1/46D04H1/435D04H1/4291D06C7/02
Inventor 宣维栋张从勇朱忠裕鞠志成刘亚
Owner CHANGZHOU TIANMA GROUP CO LTD
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