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A kind of imitation hemp fdy fiber and preparation method thereof

A fiber and hemp-like technology, which is applied in the field of skin-core composite fiber and its preparation, can solve the problems of the performance difference between the skin layer and the core layer material, and poor fiber-forming effect.

Active Publication Date: 2017-11-14
JIANGSU DELI CHEM FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference in the performance of the skin layer and the core layer material often brings many difficulties to the production of composite fibers, such as poor fiber forming effect, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Blend PET and talc powder into the screw at a mass ratio of 100:0.05 as the skin layer material, blend PET and PE at a mass ratio of 100:3 and add to the screw as the core layer material, perform skin-core composite spinning, and then cool, Oil, stretching and coiling steps obtain imitation hemp FDY fiber; Wherein, the intrinsic viscosity of PET is 0.6dL / g, and the melt index of PE is 20g / 10min; The mass ratio of cortex material and described core layer material is 2: 8; The spinning temperature is 275°C; the strong cooling zone is ring blowing, the cooling blowing temperature is 20°C, the relative humidity is 90%±5%, the wind speed is 0.7m / s, and the length is 20cm; the no wind zone is located in the strong cooling Below the zone, the length is 30cm; the secondary cooling zone is side blowing, the cooling blowing temperature is 25°C, the relative humidity is 65%±5%, the wind speed is 0.5m / s, and the length is 30cm; the first heat of the stretching The drawing speed of ...

Embodiment 2

[0033]PET and zinc oxide are blended into the screw at a mass ratio of 100:0.3 as the skin material, PET and PE are blended at a mass ratio of 100:7 and added to the screw as the core material, and skin-core composite spinning is carried out, and then cooled, upper Oil, stretching and coiling steps obtain imitation hemp FDY fiber; Wherein, the intrinsic viscosity of PET is 0.65dL / g, and the melt index of PE is 25g / 10min, and the mass ratio of cortex material and described core layer material is 5: 8; The spinning temperature is 285°C; the strong cooling zone is ring blowing, the cooling blowing temperature is 15°C, the relative humidity is 90%±5%, the wind speed is 0.8m / s, and the length is 30cm; the no wind zone is located in the strong cooling Below the zone, the length is 20cm; the secondary cooling zone is side blowing, the cooling blowing temperature is 22°C, the relative humidity is 65%±5%, the wind speed is 0.6m / s, and the length is 30cm; the first heat of the stretching...

Embodiment 3

[0036] PET and sodium benzoate are blended into the screw at a mass ratio of 100:0.5 as the skin layer material, PET and PE are blended at a mass ratio of 100:10 and added to the screw as the core layer material, and skin-core composite spinning is performed, and then cooled, upper Oiling, drawing and coiling steps, obtain hemp-like FDY fiber. Among them, the intrinsic viscosity of PET is 0.7dL / g, the melt index of PE is 30g / 10min; the mass ratio of the skin layer material to the core layer material is 5:5; the spinning temperature is 290°C; , the cooling blowing temperature is 10°C, the relative humidity is 90%±5%, the wind speed is 0.9m / s, and the length is 20cm; the no-wind zone is located below the strong cooling zone, and the length is 30cm; the secondary cooling zone is side blowing, The cooling blowing temperature is 20°C, the relative humidity is 65% ± 5%, the wind speed is 0.7m / s, and the length is 30cm; the drawing speed of the first hot roller for stretching is 1500...

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Abstract

The invention relates to a hemp-like FDY fiber and a preparation method thereof. The hemp-like FDY fiber includes two parts, a surface layer and a core layer. The material used in the surface layer is PET with nucleating agent added; the material used in the core layer is a PET-PE blend. Utilizing the difference in the extrusion swelling effect of the skin-core composite fiber skin layer and core layer materials, the surface-cracked hemp-like FDY fiber is obtained by using the skin-core composite spinning method and the FDY process, which has a hemp-like feel and deep dyeing effect.

Description

technical field [0001] The invention relates to a skin-core composite fiber and a preparation method thereof, in particular to a hemp-like FDY fiber and a preparation method thereof. Background technique [0002] Polyester (PET) is one of the most widely used synthetic polymers by humans. PET was synthesized as early as the 1940s, and it was found to have excellent properties, and it is widely used in textiles, packaging, and medical treatment. Sanitation, automobiles, electronic appliances, safety protection, environmental protection and other fields. With the progress of society and the improvement of people's living standards, the demand for the differentiation and functionalization of polyester fibers is getting higher and higher. The differentiated fibers of polyester are mainly characterized by form (fine denier, special-shaped cross-section, etc.), high performance (high strength, high modulus, low shrinkage, etc.), high function (high sensitivity, moisture absorptio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/06D01F1/10D01D13/00D01D5/34
Inventor 赵金广倪凤军张秉怀唐辉王浩宋江颂沙跃蔡瑞杨培恒李振宇王雨生
Owner JIANGSU DELI CHEM FIBER CO LTD
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