Method for preparing functional composite woolly elastic fiber

An elastic fiber and functional technology, which is applied in the field of preparation of functional composite wool-like elastic fibers, can solve the problems of poor fluffiness, long elongation, and no function of composite yarns, and achieves good elasticity and high strength. , the effect of good dyeing performance

Active Publication Date: 2010-09-29
ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The sheath yarn used in this invention patent is a common thermoplastic fiber, which has not been endowed with functionality and false-twist deformation, and its elongation is large, so the composite yarn prepared by this method is not good in terms of bulkiness

Method used

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  • Method for preparing functional composite woolly elastic fiber
  • Method for preparing functional composite woolly elastic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: produce with nanometer TiO 2 Fine-denier polyester pre-oriented yarn 265D / 288f as anti-ultraviolet additive, TiO 2 The mass content is 3.5%, and the elongation at break is 122%. After the pre-oriented yarn is stretched and twisted, the single-filament fineness is 0.5dpf, and the shrinkage in boiling water is 3.2%. PET with an intrinsic viscosity (η) of 0.5dl / g and 1.30dl / g g of PTT, composite mass ratio 1:1, using polyester FDY drawing equipment to produce 150D / 36f, monofilament fineness 4.2dpf, PET / PTT composite self-crimping elastic fiber (b), boiling water shrinkage 20%, crimp shrinkage The ratio is 25%, the section is inverted 8, compounded on the 33H Murata false twist texturing machine, the pre-oriented yarn (a) passes through a roller, a hot box, a cooling plate, and a false twister in sequence, and is stretched and false twisted. The rollers are combined with the fully drawn self-crimping composite elastic fiber (b) passing through the zero roller...

Embodiment 2

[0021] Embodiment 2: produce with nanometer TiO 2 Fine denier polyester pre-oriented yarn 265D / 288f as anti-ultraviolet additive, TiO 2 The mass content is 3.5%, and the elongation at break is 122%. After the pre-oriented yarn is stretched and twisted, the single-filament fineness is 0.5dpf, and the shrinkage in boiling water is 3.2%. PET with an intrinsic viscosity (η) of 0.5dl / g and 1.30dl / g g of PTT, composite mass ratio 1:1, using polyester FDY drawing equipment to produce 75D / 24f, monofilament fineness 3.1dpf, PET / PTT composite self-crimping elastic fiber (b), boiling water shrinkage rate 25%, crimp shrinkage The rate is 32%, and the section is inverted 8. Compounding is carried out on the 33H Murata false twist texturing machine. The pre-oriented yarn (a) passes through one roller, one hot box, cooling plate and false twister in turn for stretching and false twisting. The self-crimping composite elastic fibers (b) are merged, then composited by the network device, and ...

Embodiment 3

[0022] Embodiment 3: produce with nanometer TiO 2 Fine denier polyester pre-oriented yarn 125D / 144f as anti-ultraviolet additive, TiO 2 The mass content is 3.5%, and the elongation at break is 128%. After the pre-oriented yarn is stretched and twisted, the single-filament fineness is 0.5dpf, and the shrinkage in boiling water is 3.5%. PET with an intrinsic viscosity (η) of 0.5 and PTT with 1.30 are used, and the composite quality Ratio 1:1, using polyester FDY drawing equipment to produce 100D / 24f, monofilament fineness 5dpf, PET / PTT composite self-crimping elastic fiber (b), boiling water shrinkage 28%, crimp shrinkage 37%, cross-section inverted 8 font. Compounding is carried out on the 33H Murata false twist texturing machine. The pre-oriented yarn (a) passes through one roller, one hot box, cooling plate and false twister in turn for stretching and false twisting. The self-crimping composite elastic fibers (b) are merged, then composited by the network device, and heat-s...

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Abstract

The invention relates to a method for preparing functional composite woolly elastic fiber, comprising the following steps: (1) preparing uvioresistant fine-denier polyester pre-oriented yarn (a) with the method of adding uvioresistant masterbatch; (2) carrying out composite spinning with low viscosity polyester (PET) or modified PET and polyethylene terephthalate (PTT) to prepare fully-drawn self-winding composite elastic fiber (b); and (3) stretching and false twisting the uvioresistant fine-denier polyester pre-oriented yarn (a) on a false-twisting texturing machine, converging the uvioresistant fine-denier polyester pre-oriented yarn (a) and the fully-drawn self-winding composite elastic fiber (b) in the position of a second roller, combining the uvioresistant the fine-denier polyesterpre-oriented yarn (a) and the fully-drawn self-winding composite elastic fiber (b) through an interlacing machine, shaping the uvioresistant the fine-denier polyester pre-oriented yarn (a) and the fully-drawn self-winding composite elastic fiber (b) through a second heating box, and winding the uvioresistant the fine-denier polyester pre-oriented yarn (a) and the fully-drawn self-winding composite elastic fiber (b) into a composite yarn, contracting the PET / PTT self-winding composite elastic fiber with the elasticity and the contractibility in the core layer of the composite woolly elastic fiber to show the elasticity of the composite yarn, and making the uvioresistant fine-denier polyester pre-oriented yarn to float on the surface layer of the composite yarn to show the uvioresistant performance of the composite yarn. Therefore, the uvioresistant composite woolly elastic fiber is prepared.

Description

technical field [0001] The invention belongs to a production process of polyester composite filaments, in particular to a preparation method of functional composite wool-like elastic fibers. Background technique [0002] At present, there are endless polyester wool-like products on the market, but they are generally based on the composite processing of some conventional raw materials. With the continuous emergence of new raw materials, the development field of multi-variable composite fibers is wider. Because PET / PTT composite self-crimping elastic fibers have good elasticity, easy dyeing and high strength, some new composite wool-like elastic fiber products can be developed. At the same time, since wool-like composite fibers are mostly used in the development of uniform fabrics, especially military uniform fabrics, it is particularly necessary to endow the fabrics with anti-ultraviolet properties. [0003] The Chinese Patent Office discloses a method for manufacturing w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G1/20D02G3/04D02G3/32D02G3/36D01F1/10
Inventor 缪国华张庆喜曾伟忠
Owner ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
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