PTT (polytrimethylene terephthalate) low stretch yarn with wool-like effect and preparation method thereof

A low-elasticity, wool-like technology, used in filament/thread forming, textile and papermaking, fiber processing, etc., can solve the problems of poor wool feel, difficult to eliminate creases, hard feel, etc., and achieve outstanding wool-like effect. , the effect of excellent wool-like effect

Active Publication Date: 2013-05-22
SUZHOU LONGJIE SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the differentiated fibers obtained by these two patents have a certain wool-like effect visually, they are relatively hard to the touch and have a bad wool feel, and the fibers also have creases in the finished cotton fabric, which are difficult to eliminate. lack of

Method used

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  • PTT (polytrimethylene terephthalate) low stretch yarn with wool-like effect and preparation method thereof
  • PTT (polytrimethylene terephthalate) low stretch yarn with wool-like effect and preparation method thereof
  • PTT (polytrimethylene terephthalate) low stretch yarn with wool-like effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the present embodiment provides a PTT low-strength yarn, the cross section of which is nine-toothed, specifically comprising a core 10 with a circular cross-section and nine toothed shapes evenly distributed along the outer circumference of the core 10 part 11, and a groove 12 with a depth of 0.04~0.08 mm is formed between two adjacent toothed parts 11. The thickness T of the tooth-shaped portion 11 is 0.02-0.06 mm, and the width W is 0.04-0.08 mm. The low-stretch yarn with this structure has a particularly good wool feeling.

[0029] The PTT low stretch wire can be used in hole types such as figure 2 and 3 The spinneret shown was produced. The spinneret has a conventional spinneret structure: it includes a spinneret body 2 and a plurality of spinneret holes 3 regularly distributed on the spinneret body 2, each spinneret 3 includes a guide hole 30 and a spinneret Capillary 31. In particular, the cross-section of the spinneret capillary ...

Embodiment 2

[0031] This example provides a method for preparing elastic fibers with wool-like effect (fiber specification is 150 / 48dtex / f), which is specifically as follows:

[0032] (1) Dry the PTT chips with a viscosity of 0.98 at 135°C. After drying for 8 hours, melt them through a screw at a melting temperature of 230-265°C, extrude to obtain a melt, and send the melt into the spinning box. After metering, it is sent into the spinning assembly at the bottom of the spinning box, and finally extruded from the spinneret of the spinning assembly to form a nascent fiber with a nine-toothed cross section. See Table 1 for the spinning conditions. The spinneret is figure 2 and 3 The spinneret shown, and the spinneret capillary of the spinneret is nine-tooth type, the distance between the plate surface of the spinneret and the cooling zone is 1cm~2cm, and the air volume of the cooling zone is 0.7m / min~ 0.9m / min, the cooling temperature is controlled between 14°C and 15°C;

[0033] (2) After...

Embodiment 3

[0037]This example provides a method for preparing elastic fiber with wool-like effect (fiber specification is 200 / 65dtex / f), which is basically the same as Example 2, but the spinning conditions are slightly different. The performance index of the elastic fiber is shown in Table 1.

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Abstract

The invention relates to a PTT ((polytrimethylene terephthalate) low stretch yarn with wool-like effect and preparation method thereof. The cross section of the PTT low stretch yarn is nine-teeth shaped, and the low stretch yarn particularly comprises a core part with circular cross section and nine teeth parts uniformly distributed along the circumferential direction of the core part, wherein a groove with depth H of 0.04-0.08mm is formed between two adjacent teeth parts; and the PTT low stretch yarn is made by raw materials of PTT sections with viscosity of 0.92-1.0 and viscosity average molecular weight of 25000-30000. Different from the traditional method of changing the fiber components to achieve the wool-like effect, the wool-like effect of the low stretch yarn in the invention is achieved by designing the cross section of the PTT low stretch yarn. The dark and wool-like effect of the PTT low stretch yarn with nine-teeth shaped cross section is achieved by the diffuse reflection function for the beam; meanwhile, the stiff and smooth effect of the fiber are endowed through the axial groove skeleton effect. By adopting the preparation method of the PTT low stretch yarn, the PTT low stretch yarn with obvious hole and groove is successfully produced by a specific spinneret plate under production conditions, and the excellent wool-like effect is obtained.

Description

technical field [0001] The invention belongs to the field of textiles, and in particular relates to a PTT low elastic yarn with a wool-like effect and a preparation method thereof. Background technique [0002] With the further improvement of people's understanding of polyester, the application fields of polyester products are becoming more and more extensive, and there are more and more new polyester modified fibers, which greatly meet people's requirements for diversified life. In recent years, with the improvement of people's living standards in our country, functional clothing fabrics have become more and more popular, and the continuous development of new varieties of functional fabrics is the goal that practitioners in the industry have been pursuing. [0003] Since the 1990s, PTT polyester has been widely valued because of its unique properties. The elasticity, bulkiness, elastic recovery ability and wearing comfort of PTT are unmatched by other fibers. At present, ...

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): D01D5/253D02G1/02D02G3/32
Inventor 席文杰赵满才关乐葛建军
Owner SUZHOU LONGJIE SPECIAL FIBER
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