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Fusing alloying island fibre and production method thereof

A sea-island fiber, production method technology, applied in fiber processing, conjugated synthetic polymer rayon, filament/thread forming, etc., can solve the problems of difficulty in crimping, large difference in softening point temperature, strong rigidity of PET, etc. To achieve the effect of superior performance, good economic benefits and social benefits

Active Publication Date: 2011-09-28
SHANDONG TONGDA ISLAND NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET / PE blended polyester sea-island fibers still have the following deficiencies in the production process: PET has strong rigidity and is difficult to crimp; the softening point temperature difference between two-component PET and PE is large, and the heat setting temperature is difficult to control. The shape retention is poor; the dyeing rate of PET microfiber is low, and the dye is easy to migrate, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1. In this embodiment, PTT is selected as the component of the island, PE is the component of the sea, and the mass of PTT and PE account for 50% each. The number of islands in the section of the finished sea-island fiber is 200-500 islands / fiber, the linear density range is 3-100dtex, and the length is 38-65mm. The production method of present embodiment sea-island fiber is as follows:

[0016] a. Selection of raw materials: The main technical indicators of PTT slices are:

[0017] Intrinsic viscosity (dl / g) 0.92

[0018] Melting point (℃) 230±5

[0019] b-value 4.5

[0020] L value 85

[0021] Density (g / cm 3 ) 1.35

[0022] The main technical parameters of PE are:

[0023] Density (g / cm 3 ) 0.9162±0.0015

[0024] Melt flow rate (g / 10min) 50±7.0

[0025] b. Drying of PTT slices: vacuum-dry the PTT slices in a vacuum dryer to remove moisture and recrystallize. This embodiment adopts the method of fluidized bed pre-crystallization continuous drying...

Embodiment 2

[0040] Embodiment 2. In this embodiment, the mass ratio of PTT and PE is 70:30. During the production process, the frequency of the motor is adjusted so that PTT and PE are mixed at a mass ratio of 70:30. Other technical characteristics are the same as embodiment 1.

Embodiment 3

[0041] Embodiment 3. In this embodiment, the mass ratio of PTT and PE is 30:70. During the production process, the frequency of the motor is adjusted so that PTT and PE are mixed at a mass ratio of 30:70. Other technical characteristics are the same as embodiment 1.

[0042] The PTT mentioned in the present invention is polypropylene terephthalate; PE is polyethylene; PET is polyethylene terephthalate; PA6 is nylon 6.

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Abstract

The invention relates to a fusing alloying sea-island fibre and a production method thereof, wherein the components of island and sea are respectively PTT and PE. The production method comprises the following steps: slicing the PTT and drying, mixing the PTT slices with the PE by a certain proportion; fusing and mixing the PPT and PE into a screw extruder and then jetting the mixture, finally drawing, curling and cutting the mixture to make the product. The invention overcomes the shortage of the prior art, has excellent performance and low production cost, and has favorable economic and social benefits.

Description

technical field [0001] The invention relates to a fiber and a production method thereof, in particular to a melt-blended sea-island fiber and a production method thereof. Background technique [0002] The sea-island fiber is a composite fiber formed by dispersing one polymer in another polymer. The dispersed phase in the cross section of the fiber is in the state of "island", while the matrix is ​​equivalent to "sea". After the sea-island fiber is separated, the superfine fiber is obtained. Compared with the general fiber, it has some unique characteristics and is an ideal raw material for the production of high-grade clothing fabrics and high-grade clothing cloth. At present, the sea-island fiber that dominates the market is PA6 / PE blended sea-island fiber. In recent years, more and more mid- and downstream enterprises producing PA6 / PE blended sea-island fibers have emerged. With the rising prices of chemical raw materials, profit margins have been shrinking again and agai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01D5/28D01F8/06
Inventor 王乐智马丽豪董瑞华刘利坤苑浩亮郑永贵
Owner SHANDONG TONGDA ISLAND NEW MATERIALS
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