Preparation method for super fine denier polyester filaments

A technology of ultra-fine denier polyester and filament, which is applied in filament forming treatment, filament/thread forming, artificial filament heat treatment, etc. It can solve problems such as affecting the quality of filaments, increasing production costs, and unfavorable process parameters, etc., to achieve Low production cost, short production process and high spinning speed

Inactive Publication Date: 2013-03-13
NANTONG HUALUN CHEM FIBER
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Problems solved by technology

However, the existing ultra-fine denier polyester filament production process is extremely complicated, poor in operability, and unfavorable for the adj

Method used

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Embodiment Construction

[0017] The present embodiment will be further described in detail below.

[0018] The preparation method of the ultra-fine denier polyester filament of the present invention comprises using ultra-bright PET polyester chip as raw material, through pre-crystallization, drying, extruding, filtering, spinning box distribution, metering pump splitting, spraying Silk, side blowing, winding, finished product packaging process for production,

[0019] (1) The super-bright PET polyester chips are manually added to the wet slicing trough, and after the dust and large material are removed by the vibrating screen, the slices are sent to the wet slicing silo by the pulse conveying system for use in the crystallizer;

[0020] (2) For the pre-crystallization, the residence time of the polyester chips in the crystallizer is 20 minutes, and the electric heating temperature is 160°C;

[0021] (3) In the drying, the crystallized polyester chips are continuously and uniformly fed into the main d...

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Abstract

The invention relates to the technical field of preparation methods for polyester filaments, particularly to a preparation method for super fine denier polyester filaments. The preparation method adopts super bright PET chips as raw materials to implement the production through the steps of pre-crystallization, drying, extrusion, filtering, distribution of spinning box bodies, filament splitting by a metering pump, filament spraying, lateral air blowing, winding and packing of finished products. According to the preparation method adopted by the invention, finally finished fibers have the performances of high strength, low elongation, low heat shrinkage and the like; the breaking strength of the fibers is larger than 7.0 cN/dtex; the breaking elongation of the fibers is less than 14%; the boiling water shrinkage of the fibers is less than 1.8%; and the dry heat shrinkage is less than 4.5%. And at the same time, the preparation method has the characteristics of short production flow, high spinning speed, fewer broken filaments, fewer broken ends, low production cost and the like, and is not only used for top grade sewing threads, embroidery threads and fishing nets, but also heavily applied in various vehicle airbags, base camp tent fabrics and various industries adopting high strength fibers as auxiliary materials or reinforcing materials.

Description

technical field [0001] The invention relates to the technical field of preparation methods of polyester filaments, in particular to a preparation method of superfine denier polyester filaments. Background technique [0002] Nowadays, ultrafine denier fiber is a kind of differential fiber. Due to its good characteristics such as high coverage, soft hand feeling and comfortable wearing, it has become a hot textile raw material for various textile manufacturers at home and abroad to develop high-end textiles. Its use It can effectively improve the grade and added value of products, and superfine denier polyester fabrics have been widely used as clothing fabrics. However, the existing ultra-fine denier polyester filament production process is extremely complicated, poor in operability, unfavorable for adjustment of process parameters, seriously affects the quality of the filaments, and ultimately greatly increases the production cost of the enterprise. Contents of the inventio...

Claims

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Application Information

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IPC IPC(8): D01D5/253D01D5/088D01D10/02D01D1/00D01F6/62
Inventor 顾玲
Owner NANTONG HUALUN CHEM FIBER
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