CN112048796A

CN112048796A - Vortex spun yarn and application thereof

Info

Publication number: CN112048796A
Application number: CN201910488649.5A
Authority: CN
Inventors: 吴卓伟; 狄兴峰; 顾名忠; 包庆
Original assignee: Toray Fibers and Textiles Research Laboratories China Co Ltd
Current assignee: Toray Fibers and Textiles Research Laboratories China Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-12-08

Abstract

The invention discloses vortex spun yarn and application thereof. The vortex spun yarn has a thick part and a thin part after being treated by hot water, wherein the diameter ratio of the thick part to the thin part is 1.1-3: 1. the length ratio is 0.5-4: 1. the textile prepared from the vortex spun yarn can be used for manufacturing sweaters, underwear, socks, trousers and the like, and the products have excellent quick drying property and pilling resistance.

Description

Vortex spun yarn and application thereof

Technical Field

The invention relates to vortex spun yarn and application thereof.

Background

With the continuous improvement of living standard, consumers pay more and more attention to the influence of clothes on health and living quality in the process of sports, and especially put forward higher requirements on comfort, quick-drying property and pilling resistance of sweaters, underwear, socks, trousers and the like which are worn next to the skin. In the exercise with large activity, on one hand, a large amount of sweat can be generated, and if the sweat cannot be evaporated in time, people feel uncomfortable and stuffy, and particularly, when the fabric is wetted and adhered to the skin, the exercise can be hindered; on the other hand, when the user continues to exercise, the garment rubs against the body, and the appearance is affected by a pilling or the like. Therefore, the development of the wear-resistant and anti-pilling fabric which can quickly discharge moisture is urgent.

Currently, there are many yarns on the market for producing the fabrics, for example, patent document CN108130643A discloses a vortex spun yarn, which utilizes a structure of no twist in the middle and winding outside of the vortex spun yarn, so that the fuzz and pilling resistance of the finished product can reach above 3 level, and the structure is favorable for moisture transfer and can give good quick drying property to the product, but because the diameters of the conventional vortex spun yarn in the length direction are basically consistent, moisture absorbed into the internal structure is likely to contact with the body, and sweat is likely to adhere to the skin, which affects the wearing experience.

Patent document CN201459317U discloses a blended-color spun high-shrinkage yarn which is obtained by blending high-shrinkage fibers and low-shrinkage fibers, and which has characteristics of bulkiness and softness to the touch due to the difference in filament length between the two fibers due to their different shrinkage rates after shrinkage in boiling water, and which has good moisture absorption properties and can solve the problem of skin adhesion, but has poor quick-drying properties due to bulkiness of the outer layer, and has only a pilling resistance of 2 to 3.

Disclosure of Invention

The invention aims to provide a vortex spun yarn with excellent quick drying (low residual moisture content) and excellent pilling resistance and application thereof.

The solution of the invention is:

the vortex spun yarn has a thick part and a thin part after being treated by hot water, wherein the ratio of the diameter of the thick part to the diameter of the thin part is 1.1-3: 1. the length ratio is 0.5-4: 1.

the vortex spun yarn has a structure with loose inside and tight outside, and the textile prepared from the vortex spun yarn has extremely excellent fuzzing and pilling resistance. The thick part and the thin part are formed after hot water treatment, the thin part structure is relatively compact and is not contacted with the body, the thick part structure is relatively loose and is in point contact with the body, sweat and the like can be rapidly absorbed by the thick part contacted with the body, part of absorbed moisture is diffused from the thick part to the thin part, and evaporation is carried out by utilizing flowing air between the thin part and the body; and the other part is evaporated outwards by utilizing the loose structure of the thick part, so that the quick drying property is effectively improved.

Drawings

Fig. 1 is a view showing a structure of a yarn body before hot water treatment of the vortex spun yarn of the present invention, wherein a is a winding portion (a detail after hot water treatment) and b is a parallel portion (a thick portion after hot water treatment).

Fig. 2 is a view showing a structure of a yarn body after hot water treatment of the vortex spun yarn of the present invention, wherein a is a thin portion and b is a thick portion.

Detailed Description

The vortex spun yarn of the invention has thick parts and thin parts after being treated by hot water. When the diameter ratio of the thick part to the thin part is lower than 1.1: 1, the surface of the yarn body is relatively flat, no air flowing space can be formed between the yarn body and the body, and the evaporation speed of sweat and the like is low; when the diameter ratio of the thick part to the thin part is more than 3: 1, although there is an air flow space, since the thick portion is excessively bulky, the hair is easily formed, and the pilling resistance is poor, the diameter ratio of the thick portion to the thin portion in the present invention is 1.1 to 3: 1. considering hand feeling, quick drying and the like, the diameter ratio is more preferably 1.1-2: 1.

the hot water treatment is to treat the yarn with hot water at 60-130 ℃ for 20 minutes, and can be selected reasonably according to different fiber raw materials. In addition, the yarns treated here may also be yarns that have broken down from the textile.

Furthermore, the ratio of the lengths of the thick portion and the thin portion is less than 0.5: 1, the thick portion is short and the thin portion is long, so that the thick portion as the moisture storage and conduction cannot absorb all the sweat on the skin surface in time, and the quick-drying property is poor. And the length ratio is more than 4: 1, the thick portion is long and the thin portion is short, and the internal structure of the thick portion is loose, which causes a decrease in yarn strength, an increase in the percentage of yarn breakage during spinning and knitting, and a problem that the resulting product is likely to have fuzz and pilling. Therefore, the length ratio of the thick part to the thin part is 0.5-4: 1. more preferably, the length ratio is 1-3: 1.

preferably, in the present invention, the diameters of the rough part and the fine part are both 200 to 700 micrometers (μm), and the lengths of the rough part and the fine part are both 50 to 650 micrometers (μm).

Preferably, the elongation of the vortex spun yarn of the present invention after hot water treatment is 10% to 50%. When the elongation is more than 50%, the single fibers are curled greatly, the three-dimensional space between the single fibers is large, namely the sweat storage space is large, and the sweat absorption speed is improved, but when the sweat storage space is large to a certain degree, the capillary effect is weakened, and the sweat transmission and diffusion speed tends to be reduced; when the elongation is less than 5%, the single fibers are less curled, and the three-dimensional space between the single fibers is small, that is, the sweat storage space is small, and the sweat absorption speed tends to decrease. In the present invention, the elongation is more preferably 10% to 40%.

Preferably, the vortex spun yarn of the invention is composed of high shrinkage fibers and low shrinkage fibers, wherein the boiling water shrinkage rate of the high shrinkage fibers is 15-50%, and the boiling water shrinkage rate of the low shrinkage fibers is less than 10%. The yarn includes a parallel portion parallel to the axial direction of the yarn and a winding portion in a state of no tension before the hot water treatment. The parallel part is in a non-twisted state, and because the surface is not wound with fibers, after hot water treatment, the high-shrinkage fibers are not limited to generate larger curls and drive the low-shrinkage fibers to form thick parts; after hot water treatment, part of fibers in the winding part are curled, but are concentrated and extruded to the inside of the yarn by the resistance of the surface winding fibers, and the yarn is tightened to form details. More preferably, the boiling water shrinkage of the high shrinkage fiber is 15% to 40%, and the boiling water shrinkage of the low shrinkage fiber is 5% or less.

In the present invention, if the difference in boiling water shrinkage between the high-shrinkage fiber and the low-shrinkage fiber is less than 10%, the diameter ratio between the thick portion and the thin portion tends to decrease, and the quick-drying property may be affected; on the other hand, if the difference in shrinkage upon boiling is more than 45%, the coarse portions tend to be arranged too densely, and the water absorption tends to decrease. Therefore, in the present invention, the difference in shrinkage in boiling water between the two is preferably 10% to 45%. More preferably 20% to 30%.

Considering that the mixing ratio of the high shrinkage fibers and the low shrinkage fibers affects the formation of the thick portion, the texture, and the like, it is preferable that the mixing ratio is 1: 0.4 to 4, more preferably 1: 1 to 4.

In the present invention, the fiber material used is not particularly limited, and may be any one or more of natural fibers such as cotton, synthetic fibers such as polyester, and regenerated cellulose fibers such as viscose.

In the yarn preparation process, when the pressure of a nozzle is fixed, the higher the processing speed is, the more the ratio of the thick part is (the less the ratio of the thin part is); the slower the machining speed, the smaller the ratio of the rough portion (the larger the ratio of the fine portion). When the processing speed is higher than 600m/min, the ratio of the length of the thick portion to the length of the thin portion after boiling water treatment becomes large, and the axially untwisted portion increases, which may cause problems of deterioration of yarn strength and reduction of pilling resistance. When the processing speed is lower than 300m/min, the ratio of the lengths of the rough part and the thin part is reduced, the axial untwisted part is reduced, the effect of sweat transmission and diffusion through the rough part is reduced, and the quick drying property tends to be poor. In the invention, the processing speed is preferably 300-600 m/min.

When the processing speed is fixed, the thin part becomes tighter and tighter as the nozzle pressure is increased from small to large. When the pressure is less than 0.5mPa, the diameter ratio of the thick portion and the thin portion becomes smaller after the hot water treatment, the yarn structure is loosened, the moisture is favorably transferred to the inside of the yarn, but the pilling resistance tends to be lowered. When the pressure is more than 0.6mPa, the diameter ratio of the thick portion and the thin portion after the hot water treatment becomes large, and the effect of the transmission and diffusion of sweat through the thick fiber layer may be reduced, and the quick-drying property tends to be poor. In the present invention, the pressure is preferably 0.5 to 0.6 mPa.

The fuzz and pilling resistance of the textile prepared by using the vortex spun yarn is above grade 3.5 measured according to JIS L1076A ICI standard; the residual moisture content was 30% or less as measured by the Kerken method. After hot water treatment and other conditions, the obtained vortex spun yarn in the textile has thick parts and thin parts, and is characterized in that: the diameter ratio of the thick part to the thin part is 1.1-3: 1. the length ratio is 0.5-4: 1.

the vortex spinning of the invention can be used for manufacturing sweaters, underwear, socks, trousers and the like.

The test method of each performance parameter related in the invention is as follows:

(1) boiling water shrinkage of fiber

Refer to JIS L1095-2010.

(2) Elongation of yarn

Refer to JIS L1095-2010.

(3) Pilling resistance

Refer to JIS L1076A-2006 ICI Standard.

(4) Diameter, length

10 yarns each having a length of about 5cm and subjected to hot water treatment were selected and observed under a condition of 100 magnifications using an electronic digital microscope (KEYENCE). In the camera mode, the thick part at 3 positions and the thin part at 3 positions on the yarn are arbitrarily selected to be measured, the respective diameters and lengths are measured (as shown in fig. 2, the diameter refers to the part vertical to the length direction of the yarn body, and the length refers to the part parallel to the length direction of the yarn body), and the group of the diameter 30 and the group of the length 30 are obtained and respectively averaged to be used as the diameters and the lengths (unit: micrometer) of the thick part and the thin part of the invention. Wherein the hot water treated yarn may also be a yarn that has been disintegrated from a textile. The hot water treatment is carried out for 20 minutes by using hot water at 60-130 ℃, and can be reasonably selected according to different fiber raw materials.

The present invention will be further described with reference to examples and comparative examples.

Example 1

Selecting high-shrinkage acrylic staple fibers with the length of 38mm and the boiling water shrinkage rate of 24% as a high-shrinkage fiber raw material, selecting common acrylic staple fibers with the length of 38mm and the boiling water shrinkage rate of 5% and carded cotton with the boiling water shrinkage rate of 4% as a low-shrinkage fiber raw material, wherein the high-shrinkage fiber raw material and the low-shrinkage fiber raw material are mixed according to the ratio of 1: mixing at a ratio of 1.5, blowing, rolling, carding, drawing, and performing vortex spinning at a processing speed of 350m/min and a nozzle pressure of 0.5mpa to obtain 20 vortex spun yarns, wherein each parameter is shown in Table 1.

Example 2

The processing speed was adjusted to 400m/min, and 20 vortex spun yarns were obtained in the same manner as in example 1, and the parameters are shown in Table 1.

Example 3

The processing speed was adjusted to 300m/min, and 20 vortex spun yarns were obtained in the same manner as in example 1, and the parameters are shown in Table 1.

Example 4

High-shrinkage polyester staple fibers with the length of 38mm and the boiling water shrinkage rate of 14% are selected as high-shrinkage fiber raw materials, and 20 pieces of vortex spun yarns are obtained in the same way as in example 1, and all parameters are shown in table 1.

Example 5

High-shrinkage polyester staple fibers with the length of 38mm and the boiling water shrinkage rate of 49% are selected as high-shrinkage fiber raw materials, 20 pieces of vortex spun yarns are obtained in the same way as in example 1, and all parameters are shown in table 1.

Example 6

The proportion of the high-shrinkage fiber raw material to the low-shrinkage fiber raw material is adjusted to be 1: 0.4, as in example 1, and 20 vortex spun yarns were obtained, the parameters of which are shown in Table 1.

Example 7

The proportion of the high-shrinkage fiber raw material to the low-shrinkage fiber raw material is adjusted to be 1: 4, otherwise as in example 1, 20 vortex spun yarns were obtained, the parameters of which are shown in Table 1.

Example 8

The proportion of the high-shrinkage fiber raw material to the low-shrinkage fiber raw material is adjusted to be 1: 2.3, otherwise as in example 1, 20 vortex spun yarns were obtained, the parameters of which are shown in Table 1.

Example 9

The processing speed was adjusted to 500m/min, and 20 vortex spun yarns were obtained in the same manner as in example 1, and the parameters are shown in Table 1.

Example 10

The processing speed was adjusted to 550m/min, and 20 vortex spun yarns were obtained in the same manner as in example 1, and the parameters are shown in Table 1.

Example 11

The processing speed was adjusted to 600m/min, and 20 vortex spun yarns were obtained in the same manner as in example 1, and the parameters are shown in Table 1.

Example 12

High-shrinkage polyester staple fibers with the length of 38mm and the boiling water shrinkage rate of 54% are selected as high-shrinkage fiber raw materials, and 20 pieces of vortex spun yarns are obtained in the same way as in example 1, and all parameters are shown in table 1.

Comparative example 1

The processing speed was adjusted to 250m/min, and 20 vortex spun yarns were obtained in the same manner as in example 1, and the parameters are shown in Table 1.

Comparative example 2

20 count vortex spun yarns were obtained by using the high shrinkage polyester fiber having a boiling water shrinkage of 60% as the raw material of the high shrinkage fiber in the same manner as in example 1, and the parameters are shown in table 1.

The vortex spun yarns of examples 1 to 12 and comparative examples 1 to 2 were woven, respectively, to obtain a textile. The parameters are shown in Table 1.

TABLE 1

According to the results of Table 1 below,

(1) as is clear from examples 1 and 4, the vortex spun yarn obtained using the high shrinkage fiber having a boiling water shrinkage of 24% has comparable pilling resistance to the vortex spun yarn obtained using the high shrinkage fiber having a boiling water shrinkage of 14% under the same conditions, and the textile obtained in the former has superior quick drying properties (low residual moisture content) to the latter.

(2) From examples 1 and 6, it is clear that the blend ratio of the high shrinkage and low shrinkage fibers is 1: 1.5 the mixing ratio of vortex spun yarn and high shrinkage and low shrinkage fiber is 1: compared with the vortex spun yarn of 0.4, the textile prepared by the former has slightly better fuzz and pilling resistance than the latter, but the quick drying property (slightly higher residual moisture rate) is slightly lower than that of the latter.

(3) As is clear from example 1 and example 11, the spun vortex yarn having an elongation of 30% is superior to the spun vortex yarn having an elongation of 55% in both pilling resistance and quick-drying property to the textile produced by the former.

(4) As is clear from examples 1 and 12, under the same conditions, the fast drying property of the fabric produced by the vortex spun yarn having a shrinkage difference of 20% in fiber material is equivalent to that of the vortex spun yarn having a shrinkage difference of 50% in fiber material, and the pilling resistance of the fabric produced by the former is slightly superior to that of the latter.

(5) From comparative example 1 and example 1, it is clear that under the same conditions, the ratio of the diameter of the thick portion to the diameter of the thin portion is 1: 1. length ratio of 0.2: 1, the ratio of the diameter of the vortex spun yarn to the diameter of the thick part to the diameter of the thin part is 2: 1. the length ratio is 2.3: while the vortex spun yarn of 1 has comparable pilling resistance to the textile produced from the two, the textile produced from the former has poor quick-drying properties (high residual moisture content).

(6) From comparative example 2 and example 5, it is clear that the ratio of the diameter of the thick portion to the diameter of the thin portion is 3.5: 1. the length ratio is 4.5: 1, the ratio of the diameter of the vortex spun yarn to the diameter of the thick part to the diameter of the thin part is 2.5: 1. length to length ratio 1.5: the spun yarn of 1 has comparable fast-drying properties to those of the textile produced by the two, but the textile produced by the former has poor pilling resistance.

Claims

1. A vortex spun yarn is characterized in that: the vortex spun yarn is processed by hot water and then has a thick part and a thin part, and the diameter ratio of the thick part to the thin part is 1.1-3: 1. the length ratio is 0.5-4: 1.

2. the vortex spun yarn of claim 1, wherein: the elongation of the vortex spun yarn after hot water treatment is 10-50%.

3. The vortex spun yarn of claim 1 or 2, wherein: the vortex spun yarn is composed of high-shrinkage fibers and low-shrinkage fibers, wherein the boiling water shrinkage rate of the high-shrinkage fibers is 15% -50%, and the boiling water shrinkage rate of the low-shrinkage fibers is less than 10%.

4. The vortex spun yarn of claim 3, wherein: the difference of the boiling water shrinkage rate between the high shrinkage fiber and the low shrinkage fiber is 10-45%.

5. The vortex spun yarn of claim 3, wherein: the mixing ratio of the high shrinkage fibers to the low shrinkage fibers is 1: 1 to 4.

6. A textile product made from the vortex spun yarn of claim 1, wherein: the textile has a fuzz and pilling resistance of above grade 3.5 measured according to JIS L1076A ICI standard.

7. The textile of claim 6, wherein: the textile has a residual moisture content of less than 30% after 60 minutes as measured according to the Kerken method.