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Production method of fine denier hollow polyester staple fiber

A technology of polyester staple fiber and production method, which is applied in the directions of staple fiber formation, hollow filament manufacturing, fiber chemical characteristics, etc. Stable hand feel and physical properties

Active Publication Date: 2008-11-12
SINOPEC YIZHENG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the domestic and foreign markets, the thinner hollow polyester staple fiber products with a specification of 1.56dt are produced by Shanghai Lianji Chemical Fiber Co., Ltd. and Japan DuPont, and there are no reports on further refined products and related production methods.

Method used

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  • Production method of fine denier hollow polyester staple fiber
  • Production method of fine denier hollow polyester staple fiber
  • Production method of fine denier hollow polyester staple fiber

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Embodiment Construction

[0019] The invention adopts the innovatively designed fine-denier hollow special spinneret, and on the conventional polyester staple fiber production line, through the optimization and adjustment of the production process, produces the fine-denier hollow polyester staple fiber with a specification of 0.8dt~1.5dt, which meets the market demand. Filled in the gaps at home and abroad.

[0020] First of all, the present invention adopts an innovatively designed spinneret, and the spinneret hole is in the shape of a single-opening "C" ring, such as figure 1 As shown, while effectively improving the closing success rate of the cross-section of the fiber, the fiber is guaranteed to have a high degree of hollowness.

[0021] Specifically, the slit width L of the spinneret "C"-shaped ring, the opening degree W, and the shape design of the two ends of the opening are the techniques for spinning round hollow polyester staple fibers with suitable hollowness and good closure rate. The ess...

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Abstract

The invention provides a production method for fine denier hollow polyester staple fiber. The spinneret hole of the spinneret is a single opening C-shaped circle, the spinning temperature is 288-292 DEG C, the circular air blow speed is 0.8-1.3 m / s and the air blow temperature is 17-23 DEG C. The 0.8 dt-1.5 dt fine denier hollow polyester staple fiber is obtained by processing adopting the process route of conventional polyester staple fiber. The invention has the advantages of stable production process and high product closing success rate. The titer and modulus of fiber are decreased further on the precondition of ensuring physical properties of the fiber such as higher hollowness, excellent fracture strength and elongation at break, thus improving the flexibility of fiber and soft feeling of fabric effectively and meeting the market demand for further fine denier of hollow polyester staple fiber.

Description

technical field [0001] The invention relates to the production and processing of polyester staple fibers, in particular to a production method of fine-denier hollow polyester staple fibers, and belongs to the technical field of synthetic fiber production. Background technique [0002] At present, most of the domestic hollow fibers are hollow three-dimensional crimped short fibers, and the specifications are mainly above 3.33dt. Their application fields are concentrated in: spray-bonded cotton, artificial fur, bedding, toys and other industries. A large part of these products are spun from recycled bottle materials, and the production cost is relatively low, but the fibers are thick and hard, and can only be used as filling materials such as bedding, pillows, toys, etc., and are not suitable for clothing fabrics—especially directly with Skin contact fabrics. [0003] Generally, polyester hollow fibers below 1.56 dt are called fine denier polyester hollow fibers. After the f...

Claims

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Application Information

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IPC IPC(8): D01D5/24D01D5/26
Inventor 薛斌孙华平陆明英朱福和陈培史利梅谢宏王卫东陈来宏
Owner SINOPEC YIZHENG CHEM FIBER
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