High-strength cation cotton-like yarn and preparation method thereof

Abstract

The invention discloses a high-strength cationic cotton-like yarn and a preparation method thereof, and belongs to the technical field of textile materials. The high-strength cation cotton-like yarn provided by the invention comprises a core layer and a skin layer coated outside the core layer, the core layer is a first cation skin-core yarn, and the skin layer is a second cation skin-core yarn. According to the preparation method provided by the invention, the first cation skin-core yarn and the second cation skin-core yarn pass through a zero roller of an elasticizer together, then are interlaced through an interlacing nozzle, sequentially pass through a first roller, a first hot box, a false twister, a second roller, a second hot box, a third roller and an oil wheel, and are wound and formed. The skin-core yarn is used as the core material and the skin material to be prepared into the skin-core yarn, a core-sheath structure can be formed, the prepared cotton-like yarn has good cotton feeling, and the strength of the cotton-like yarn is higher than that of a common cotton-like yarn.

Description

Technical Field

[0001] The invention belongs to the technical field of textile materials, and particularly relates to a high-strength cationic cotton-like yarn and a preparation method thereof. Background Art

[0002] Cotton fiber has the characteristics of good hygroscopicity and softness, but it has deficiencies in shape retention, sweat conduction and moisture removal, and is in short supply and high in price. Imitation cotton yarn made of polyester or nylon came into being. For example, the Chinese invention patent with application number 202011135688.6 discloses an environmentally friendly high-elastic imitation cotton yarn, which uses long-fiber polyester FDY and polyester staple fiber as raw materials, and uses a texturing machine to prepare high-elastic imitation cotton yarn. Among these imitation cotton yarns, cationic imitation cotton yarn has the characteristics of bright color and high color fastness, and is widely used in the manufacture of various types of clothing. However, the cationic imitation cotton yarn made of polyester on the market cannot meet the requirements of shoe material weaving due to strength problems. If it is to be used in shoe material manufacturing, the strength of the material must be increased for normal weaving. In order to improve the strength, the general method is to increase the viscosity, but the imitation cotton yarn made of cationic yarn after viscosity increase has a poor feel and cannot achieve a good imitation cotton effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a cationic cotton-like yarn with good cotton-like feel and high strength characteristics and a preparation method thereof.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-strength cationic cotton-like yarn, including a core layer and a skin layer coated outside the core layer; the core layer is a first cationic core-skin yarn, and the skin layer is a second cationic core-skin yarn.

[0005] The preparation method of the high-strength cationic cotton-like yarn comprises the following steps: passing the first cationic core-sheath yarn and the second cationic core-sheath yarn together through the zero roller of the texturing machine, and then interlacing through the network nozzle, and then passing through the first roller, the first hot box, the false twister, the second roller, the second hot box, the third roller, the oil tanker and winding into shape.

[0006] The beneficial effect of the present invention is that the high-strength cationic cotton-like yarn provided by the present invention has a cationic sheath-core structure POY as the sheath and a cationic sheath-core structure DTY or FDY as the core, to obtain a yarn with a sheath-core superimposed (composite) sheath-core to form a core-sheath structure. After being made into the imitation cotton yarn, it has a good cotton feel and has a higher strength than general imitation cotton yarns, and can meet application scenarios with higher strength requirements. DETAILED DESCRIPTION

[0007] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes.

[0008] A high-strength cationic cotton-like yarn comprises a core layer and a skin layer coated outside the core layer; the core layer is a first cationic core-skin yarn, and the skin layer is a second cationic core-skin yarn.

[0009] From the above description, it can be seen that the beneficial effect of the present invention is that the high-strength cationic cotton-like yarn provided by the present invention uses the raw material yarn of the core-sheath structure as the core, and then uses the raw material yarn of the core-sheath structure as the sheath, so as to achieve the superposition of the core-sheath and the core-sheath, thereby achieving good effects and improving the strength of the yarn. At the same time, the high-strength cationic cotton-like yarn also has good air permeability.

[0010] Furthermore, the first cationic sheath-core yarn is DTY or FDY.

[0011] Furthermore, the first cationic core-sheath yarn comprises a core layer made of high molecular weight PET and a sheath layer made of cationic PET.

[0012] Furthermore, the second cationic sheath-core yarn is POY.

[0013] Furthermore, the second cationic core-sheath yarn comprises a core layer made of high molecular weight PET and a sheath layer made of cationic PET.

[0014] Furthermore, the first cationic sheath-core yarn is DTY or FDY with cationic PET as the sheath and high molecular weight PET as the core, and the second cationic sheath-core yarn is POY with cationic PET as the sheath and high molecular weight PET as the core.

[0015] From the above description, it can be seen that the raw yarns used to prepare the sheath and core both use cationic PET as the sheath and high molecular weight PET as the core, which can improve the strength of the final product while satisfying a good dyeing effect. For a more specific preparation method of the first cationic sheath-core yarn and the second cationic sheath-core yarn, please refer to the Chinese invention patent with application number 2024115093040.

[0016] Furthermore, the preparation method of high-strength cationic cotton-like yarn includes the following steps: passing the first cationic core-sheath yarn and the second cationic core-sheath yarn together through the zero roller of the texturing machine, and then interlacing through the network nozzle, and then passing through the first roller, the first heat box, the false twister, the second roller, the second heat box, the third roller, the oil tanker and winding into shape.

[0017] Furthermore, a tension controller is provided between the false twister and the second roller.

[0018] Furthermore, the air pressure of the network nozzle is 0.25~0.35MPa.

[0019] It can be seen from the above description that good networking effect can be guaranteed under the action of the network device and appropriate nozzle pressure.

[0020] Further, the processing temperature of the first heat box is 130-170°C, such as 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, 160°C, 165°C or 170°C.

[0021] Further, the processing temperature of the second hot box is 100-170°C, such as 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, 160°C, 165°C or 170°C.

[0022] From the above description, it can be seen that since cations are added to the sheath-core yarn as the raw material, the deformation temperature will be low, and the processing temperature of the two heat boxes is adjusted to the above range.

[0023] Furthermore, the oil content of the high-strength cationic cotton-like yarn is 2-5%.

[0024] From the above description, it can be seen that since cations are added to the sheath-core yarn as the raw material, the oil content will be relatively high. Controlling the oil content within the above range can ensure the unwinding effect of the spindle.

[0025] Furthermore, the processing speed of the preparation method provided by the present invention is 300-600 m / min.

[0026] Embodiment 1 of the present invention is: A method for preparing high-strength cationic cotton-like yarn comprises the following steps: The sheath-core filament POY (with cationic PET as the sheath and high molecular weight PET as the core) of 93dtex / 144F and an elongation at break of 140% and the sheath-core filament FDY (with cationic PET as the sheath and high molecular weight PET as the core) of 83dtex / 48F and an elongation at break of 30% are fed through the zero feeding roller and passed through the network nozzle with an air pressure of 0.35MPa. Then, they pass through the first feeding roller and enter the first hot box with a set temperature of 140°C for heating and 1.05 times stretching, and then pass through the cooling plate for cooling. Then, they enter the false twist disk for false twist deformation, and then enter the tension controller; after entering the second roller with a speed of 500m / min, they pass through the second hot box with a set temperature of 120°C, pass through the third roller, and are finally wound by the oil tanker to obtain a high-strength cationic cotton-like yarn with an oil content of 4%.

[0027] Embodiment 2 of the present invention is: A method for preparing high-strength cationic cotton-like yarn comprises the following steps: 93dtex / 144F sheath-core filament POY (POY with cationic PET as sheath and high molecular weight PET as core) with an elongation at break of 140% and 83dtex / 72F sheath-core filament DTY (DTY with cationic PET as sheath and high molecular weight PET as core) with an elongation at break of 25% are fed through the zero feeding roller and passed through the network nozzle with an air pressure of 0.30MPa. They pass through the first feeding roller and then enter the first hot box with a set temperature of 140°C for heating and 1.05 times stretching, and then pass through the cooling plate for cooling. Then, they enter the false twist disk for false twist deformation and then enter the tension controller; after entering the second roller with a speed of 400m / min, they pass through the second hot box with a set temperature of 120°C, pass through the third roller, and are finally wound by the oil tanker to obtain a high-strength cationic cotton-like yarn with an oil content of 5%.

[0028] Embodiment 3 of the present invention is: The sheath-core filament POY (with cationic PET as the sheath and high molecular weight PET as the core) of 93dtex / 144F and an elongation at break of 140% and the sheath-core filament FDY (with cationic PET as the sheath and high molecular weight PET as the core) of 83dtex / 48F and an elongation at break of 30% are fed through the zero feeding roller and passed through the network nozzle with an air pressure of 0.35MPa, and then passed through the first feeding roller, and then entered the first hot box with a set temperature of 145°C for heating and 1.05 times stretching, and then passed through the cooling plate for cooling, and then entered the false twist disk for false twist deformation, and then entered the tension controller; after entering the second roller with a speed of 600m / min, after passing through the second hot box with a set temperature of 110°C, passed through the third roller, and finally wound by the oil tanker to obtain a high-strength cationic cotton-like yarn with an oil content of 3%.

[0029] Embodiment 4 of the present invention is: The sheath-core filament POY (with cationic PET as the sheath and high molecular weight PET as the core) of 93dtex / 144F and an elongation at break of 140% and the sheath-core filament DTY (with cationic PET as the sheath and high molecular weight PET as the core) of 83dtex / 72F and an elongation at break of 25% are fed through the zero feeding roller and passed through the network nozzle with an air pressure of 0.25MPa. Then, they pass through the first feeding roller and enter the first hot box with a set temperature of 170°C for heating and 1.05 times stretching, and then pass through the cooling plate for cooling. Then, they enter the false twist disk for false twist deformation, and then enter the tension controller; after entering the second roller with a speed of 300m / min, they pass through the second hot box with a set temperature of 170°C, pass through the third roller, and are finally wound by the oil tanker to obtain a high-strength cationic cotton-like yarn with an oil content of 2%.

[0030] Comparative Example 1: 93dtex / 144F filament POY (PET) with an elongation at break of 140% and 83dtex / 48F filament FDY (PET) with an elongation at break of 30% are fed through the zero feeding roller and passed through a network nozzle with an air pressure of 0.35MPa. They pass through the first feeding roller and then enter the first hot box with a set temperature of 190°C for heating and 1.05 times stretching, and then pass through a cooling plate for cooling. Then, they enter the false twisting disk for false twisting deformation, and then enter the tension controller; after entering the second roller with a speed of 600m / min, they pass through the second hot box with a set temperature of 170°C, pass through the third roller, and are finally wound by the oil tanker to obtain a cotton-like yarn with an oil content of 2%.

[0031] The imitation cotton yarns obtained in Examples 1 and 2 and Comparative Example 1 were tested, and the results are shown in Table 1. In the hand feel test, 20 inexperienced people were used to evaluate the fabrics. If the number of people who thought the imitation cotton feel was good was greater than or equal to 15, it was excellent, 10-14 people were good, 5-9 people were medium, and less than 5 people were poor.

[0032] Table 1

[0033] It can be seen that the preparation method provided by the present invention can prepare cotton-like yarn with higher strength but better cotton-like feel.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-strength cationic cotton-like yarn, characterized in that: It comprises a core layer and a skin layer coated outside the core layer; the core layer is a first cationic core-skin yarn, and the skin layer is a second cationic core-skin yarn.

2. The high-strength cationic cotton-like yarn according to claim 1, characterized in that: The first cationic core-sheath yarn is DTY or FDY.

3. The high-strength cationic cotton-like yarn according to claim 2, characterized in that: The first cationic core-sheath yarn comprises a core layer made of high molecular weight PET and a sheath layer made of cationic PET.

4. The high-strength cationic cotton-like yarn according to claim 1, characterized in that: The second cationic core-sheath yarn is POY.

5. The high-strength cationic cotton-like yarn according to claim 4, characterized in that: The second cationic core-sheath yarn comprises a core layer made of high molecular weight PET and a sheath layer made of cationic PET.

6. A method for preparing the high-strength cationic cotton-like yarn according to any one of claims 1 to 5, characterized in that: The following steps are involved: The first cationic core-sheath yarn and the second cationic core-sheath yarn are passed through the zero roller of the texturing machine together, and then interlaced through the network nozzle, and then passed through the first roller, the first heat box, the false twister, the second roller, the second heat box, the third roller, the oil tanker and the winding forming.

7. The method for preparing high-strength cationic cotton-like yarn according to claim 6, characterized in that: The air pressure of the network nozzle is 0.25~0.35Mpa.

8. The method for preparing high-strength cationic cotton-like yarn according to claim 6, characterized in that: The processing temperature of the first hot box is 130-170°C.

9. The method for preparing high-strength cationic cotton-like yarn according to claim 6, characterized in that: The processing temperature of the second hot box is 100-170°C.

10. The method for preparing high-strength cationic cotton-like yarn according to claim 6, characterized in that: The oil content of the high-strength cationic cotton-like yarn is 2-5%.

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