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Spinneret and spinneret process for side-by-side composite fiber new material process

A composite fiber and new material technology, applied in fiber processing, filament/thread forming, textiles and papermaking, etc., can solve problems such as insufficient adhesion, fiber peeling, and material bonding with excessive heat shrinkage difference, and achieve material Large selection range, enhanced fiber adhesion, and the effect of avoiding peeling phenomenon

Active Publication Date: 2019-08-09
南通华盛高聚物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in side-by-side composite fibers, it is difficult to bond two materials with a large heat shrinkage difference. Once bonded, one of the fibers shrinks too much, and the two fibers will be peeled off due to insufficient adhesion.

Method used

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  • Spinneret and spinneret process for side-by-side composite fiber new material process
  • Spinneret and spinneret process for side-by-side composite fiber new material process
  • Spinneret and spinneret process for side-by-side composite fiber new material process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as Figure 8 The side-by-side composite fiber spinning equipment shown includes two distributing devices and a spinneret 8, the spinneret 8 is provided with two spinning mechanisms, and the distributing device includes a sequentially connected feeding port 5, a filter cavity 6. Distribution holes 70 and multiple distribution channels 71 . An upper filter plate 60 and a lower filter plate 63 are arranged at the inlet and outlet of the filter cavity 6 to fine filter the materials entering and leaving the filter cavity.

[0046] The hot-melt polymer enters the filter cavity 6 from the feed port 5 . When entering the filter chamber 6, pass through the upper filter plate 60 for fine filtration. The filter chamber 6 is filled with filter sand, which can further screen out impurities in the hot-melt polymer. When flowing out from the filter cavity 6, it will be finely filtered through the filter plate 63 again to avoid the filter sand from being carried out.

[0047] ...

Embodiment 2

[0065] Such as Figure 8 As shown, since the flow chamber in the filter cavity 6 in the spinning equipment in embodiment 1 needs to remove air bubbles, its placement angle is greatly restricted and must be placed vertically, so the bottom of the spinning equipment needs to A large amount of space is used to collect the composite fiber filaments.

[0066] Therefore, in order to expand the space, such as Figure 10 As shown, in this embodiment, the spinneret 8 is folded 90 degrees, so that the outlet of the spinneret 8 faces horizontally, and the position of the filter chamber 6 remains unchanged.

[0067] Therefore, the fiber filaments come out toward the side, and the horizontal space can be utilized to greatly expand the space required for operation.

Embodiment 3

[0069] A kind of parallel compound spinneret process that uses spinneret to carry out in embodiment 1, comprises spinneret step;

[0070] Described spinning step comprises:

[0071] a. Two kinds of hot-melt polymers are composited through two spinneret channels respectively;

[0072] b. The composite process includes: hot melt polymer filling the spinneret body and the diversion channel on the spinneret channel of the diversion section after the extrusion cavity;

[0073] c. In the direction of the extrusion and spinning of the diversion path, the hot melt polymer shrinks along the section of the diversion path and elongates along the end of the diversion path until the end of the diversion path extends into the relative spinneret channel. The diversion path butts into the bonding path of the bonding section;

[0074] d. The bonding section is compounded step by step and enters the spinneret hole to complete the parallel composite spinneret.

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Abstract

The invention discloses side-by-side composite fiber extrusion equipment. The equipment comprises a spinneret plate, an extrusion mechanism in the spinneret plate comprises two extrusion cavities, a spinneret hole and two extrusion passages; the extrusion passages are connected with the extrusion cavities and the spinneret hole, a plurality of bonding lanes are connected between the extrusion passages, the bonding lanes are distributed along an axial lead between the extrusion passages, two sides of the bonding lanes are connected with the extrusion passages, and the extrusion passages and thebonding lanes are connected with the interior of the spinneret hole. According to the side-by-side composite fiber extrusion equipment, plane-shaped bonding parts are formed in the middle of fiber filaments by utilizing the bonding lanes between the extrusion passages, interlaced stacking bondings are formed by the bonding parts on the interfaces of composite fibers to greatly enhance adhesive force of fibers on the interfaces of the composite fibers to prevent occurrences of peeling phenomenons so that polymers with poor thermal shrinkage can be adopted as materials of the side-by-side composite fiber.

Description

technical field [0001] The invention belongs to the field of new material preparation, in particular to a side-by-side composite fiber spinneret and spinneret equipment. Background technique [0002] The side-by-side composite fiber is a composite fiber in which the two component polymers are arranged on both sides of the fiber along the longitudinal direction of the fiber. Two different polymer fibers are used to produce shrinkage difference during pre-cooling shrinkage, so that the composite fiber is in the shape of rolled elastic fiber. [0003] At present, in the preparation process of side-by-side composite fibers, there is often insufficient adhesion at the interface, and the fiber is peeled off from the interface. [0004] Therefore, in side-by-side composite fibers, it is difficult to bond two materials with a large heat shrinkage difference. Once bonded, one of the fibers shrinks too much, and the two fibers will be peeled off due to insufficient adhesion. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/32D01D5/253
CPCD01D5/253D01D5/32
Inventor 沈坤良张春华冯爱华
Owner 南通华盛高聚物科技股份有限公司
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