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Preparation method of triangular hollow dacron short fiber and spinneret plate for preparing triangular hollow dacron short fiber

A polyester staple fiber, hollow technology, applied in the field of preparation of triangular hollow polyester staple fiber, can solve the problems of poor reflective effect of fiber plane, not too ideal gloss, unfavorable spinning quenching and forming, etc., to improve hollow rate, improve Gloss and application effect, the effect of making up for poor gloss

Active Publication Date: 2012-06-27
福建鑫华股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production methods of the above-mentioned various hollow fibers, the spinneret of the spinning box of the melt spinning equipment used mostly adopts C-shaped holes, and it is difficult for the C-shaped holes to keep the fibers in a regular triangle shape, and the plane reflective effect of the fibers is poor. , the gloss is not ideal; moreover, the screw temperature of the screw extruder of the melt spinning equipment used is relatively high (above 275°C), and the temperature of the ring blowing is above 18°C, which is not conducive to the quenching and forming of the spinning ring blowing , the extrusion swell is relatively high, resulting in a low hollow rate of the fiber and unstable hollowness

Method used

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  • Preparation method of triangular hollow dacron short fiber and spinneret plate for preparing triangular hollow dacron short fiber
  • Preparation method of triangular hollow dacron short fiber and spinneret plate for preparing triangular hollow dacron short fiber
  • Preparation method of triangular hollow dacron short fiber and spinneret plate for preparing triangular hollow dacron short fiber

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Embodiment 1

[0026] A kind of preparation method of triangular hollow polyester staple fiber of the present invention, realize by following steps:

[0027] 1. 1499.68 kg of waste PET bottle flakes, 50 kg of friction material, 50 kg of foam material and 0.32 kg of fluorescent whitening agent are used as raw materials for spinning; the melting point of waste PET bottle flakes is 258°C, the viscosity is 0.69dl / g, and the PVC content 0.034%; friction material has a melting point of 254°C, a viscosity of 0.62dl / g, and a PVC content of 0.04%; a foam material has a melting point of 255°C, a viscosity of 0.58dl / g, and a PVC content of 0.035%;

[0028] Among them, chemical fiber friction materials and foam materials come from various PET wastes (including polyester filament waste, staple fiber waste, plastic sheets, pulp blocks discharged from melt filters in polyester production, etc.).

[0029] 2. Blend the above-mentioned spinning raw materials evenly and put them into a drum vacuum machine for ...

Embodiment 2

[0043] A kind of preparation method of triangular hollow polyester staple fiber of the present invention, realize by following steps:

[0044]1. 1599.68 kg of waste PET bottle flakes and 0.32 kg of fluorescent whitening agent are used as spinning raw materials; the melting point of waste PET bottle flakes is 258°C, the viscosity is 0.69dl / g, and the PVC content is 0.034%.

[0045] 2. Blend the above-mentioned spinning raw materials evenly and put them into a drum vacuum machine for drying. Set the vacuum degree of the drum vacuum machine to -0.098Mpa, the steam pressure to 5.0kg, and the drying temperature to 150°C. 10h, the moisture content of the spinning raw material blend is 85PPM.

[0046] 3. Feed the above-mentioned dried spinning raw materials into the melt spinning equipment, and carry out melt spinning through the spinning box of the melt spinning equipment. The spinning assembly of the box body is used for spinning, and the melt is extruded from the spinneret of the...

Embodiment 3

[0059] A kind of preparation method of triangular hollow polyester staple fiber of the present invention, realize by following steps:

[0060] 1. 1549.68 kg of waste PET bottle flakes, 50 kg of friction material and 0.32 kg of fluorescent whitening agent are used as spinning raw materials; the melting point of waste PET bottle flakes is 258°C, the viscosity is 0.69dl / g, and the PVC content is 0.034%; the friction material The melting point is 254°C, the viscosity is 0.62dl / g, and the PVC content is 0.04%.

[0061] 2. Blend the above-mentioned spinning raw materials evenly and put them into a drum vacuum machine for drying. Set the vacuum degree of the drum vacuum machine to -0.098Mpa, the steam pressure to 5.0kg, and the drying temperature to 150°C. 10h, the moisture content of the spinning raw material blend is 95PPM.

[0062] 3. Feed the above-mentioned dried spinning raw materials into the melt spinning equipment, and carry out melt spinning through the spinning box. The h...

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Abstract

The invention discloses a preparation method of a triangular hollow dacron short fiber and a spinneret plate for the preparing triangular hollow dacron short fiber. Melting spinning is performed after mixing and drying of a spinning raw material, a nascent fiber for preparing triangular hollow dacron is extruded through the special-shaped hole spinneret plate, winding, filament dropping and bunching are performed in sequence, and finally flabby heat setting is performed after oil bath drafting, steam drafting and curling. In the preparation method, an arc-shaped open hole is adopted on the spinneret plate, the concave surface is outward, extruding swelling occurs during the spinning process, the concave surface is substantially a plane, and a fiber section can maintain an equilateral triangle shape well. Compared with an existing special-shaped section hollow technology, the plane of the triangular hollow dacron produced by the preparation method is good in light reflection effect and glossiness, gloss and application effects of fabrics are improved, soft effects are improved, thermal insulation is excellent, stable and efficient low-frequency sound insulation functions are provided, hollow rate of the fiber can be 30%-40%, the special-shaped degree can be 50%-60%, the hollow rate and the special-shaped degree are stable, the volume density is low, and good advantages are provided.

Description

【Technical field】 [0001] The invention relates to the field of differentiated fibers, in particular to a method for preparing triangular hollow polyester staple fibers. 【Background technique】 [0002] The cross-sectional shape of the fiber is closely related to the characteristics of the fiber. The irregular shape of the fiber cross-section makes the polyester fabric feel fluffy, improves the gloss effect and hand feeling, and improves the air permeability and pilling resistance of the fabric. Because the hollow fiber has a continuous cavity inside, the volume quality of the fiber is reduced, and the heat insulation and warmth retention of the fabric are improved. The special-shaped hollow polyester fiber with both special-shaped and hollow features has more advantages than round hollow fibers and special-shaped fibers. At present, most of the technology and research and development in the industry use chips as raw materials to prepare special-shaped hollow polyester staple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/092D01D5/24D01D5/253D02J1/22D01F6/92D01F1/10
Inventor 王宝荣曾鹏程吴端王山英白玉光
Owner 福建鑫华股份有限公司
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