PE 100% spun yarn having anti-fuzzing and anti-pilling properties and method for producing the same

Abstract

To provide an anti-fuzzing and anti-pilling PE 100% yarn and a preparation method thereof.SOLUTION: A preparation method of an anti-fuzzing and anti-pilling PE 100% yarn comprises the steps of: spinning; cooling; oiling and drawing; and sizing and winding. The invention is configured in that: a toughness index of monofilament is improved by adjusting processing parameters in each step of spinning, cooling, oiling and drawing and sizing and winding; a problem that the monofilament is fractured in an using process of fabric is effectively solved; a problem of fuzzing is fundamentally solved; and occurrence of a problem of peeling is furthermore prevented. According to the anti-fuzzing and anti-pilling PE 100% yarn prepared by the method, a fineness of the monofilament is 6D, a strength thereof is 2.7 to 2.9 CN / dtex, and a cross section thereof is triangular or rectangular, so that when a fabric is subjected to friction in the using step, a friction force cannot overcome the strength of the monofilament, the monofilament is ensured not to be fractured, and occurrence of a fuzzing and pilling phenomenon is effectively avoided.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention belongs to the technical field of PE (polyethylene) spun yarns, and particularly relates to a 100% PE spun yarn having fluffiness and pilling resistance and a method for manufacturing the same.

Background Art

[0002] At present, fabrics knitted from spun yarns such as clothes and ornaments in the market, due to the strength of the spun yarns during use, when subjected to forces such as friction, single fibers break, and after breaking, the roots of the spun yarns still remain in the fabric. After friction, they entangle with each other to form small yarn balls, resulting in a decrease in the comfort of the fabric and also affecting its appearance.

[0003] The prior art mainly solves the problems of fluffiness and pilling by twisting to improve the entanglement of the tows (fibers). However, due to the addition of this process, the production cost increases, the feel of the fabric becomes hard, and due to the twist, the fabric surface is rough, not flat, and the luster is not bright.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the deficiencies of the prior art, a 100% PE spun yarn having fluffiness and pilling resistance and a method for manufacturing the same are provided. By improving the molecular weight of the fiber, the drawing process, the strength, elongation, and cross-section of the single fiber, the problem of single fiber breakage during the use of the fabric is effectively solved, the problem of fluffiness is fundamentally solved, and the occurrence of pilling problems is further prevented.

Means for Solving the Problems

[0005] The technical solution used by the present invention to solve this technical problem is a method for manufacturing a 100% PE spun yarn having fluffiness and pilling resistance. Put the dried polyolefin chips into the raw material input chamber, first melt, filter, and measure them, then put them into the heat preservation box body, and then, after passing through filtration and pressurization by the component, extrude them uniformly from the spinning die. Set the melting temperature range to 270 - 290 °C, the box body temperature to 285 - 300 °C, load 80 - 100 mesh stainless steel sintered metal sand inside the component, and set the initial pressure of the component to 110 KG. Spinning step S1; Let the dropped tow reach the focusing point by air cooling, and set the air temperature to 16 - 18 °C and the air speed to 0.6 - 0.75 m / s. Cooling step S2; Oil the tow that has fallen from the cooling air window with an oiling wheel, then put it into the hot stretching section for traction and tension. Control the speed of the oiling wheel to 32 - 35 HZ, the concentration of the oil agent to 1:6, the oiling rate of the tow to 1.1 - 1.3%, the drawing multiple to 4.6 - 4.9, and the drawing temperature to 62 - 70 °C. Oiling and stretching step S3; Perform stable shaping and winding on the tow after traction and tension, set the shaping temperature to 108 - 110 °C, and make the boiling water shrinkage rate of the tow 8% - 9% after shaping. Shaping and winding step S4, including.

[0006] Specifically, the molecular weight of the polyolefin chips is 680,000 - 750,000.

[0007] Specifically, in step S1, load 110 - 120 g of stainless steel sintered metal sand inside the component.

[0008] Specifically, in step S1, the melting temperatures are set to 270 °C, 290 °C, 290 °C, and 290 °C, and the box body temperature is 290 °C.

[0009] Specifically, the shape of the spinning holes on the spinning die is triangular or rectangular.

[0010] Specifically, in step S2, the distance from the focusing point to the spinning die is 2 - 2.3 m.

[0011] Specifically, in step S3, control the oiling rate of the tow to 1.2%.

[0012] Specifically, in step S4, the number of winding turns is 6 to 8 times.

[0013] The PE 100% spun yarn having hairiness and pilling prevention properties is a spun yarn processed by the above manufacturing method.

[0014] Specifically, the PE 100% spun yarn having hairiness and pilling prevention properties has a fineness of 6 D for a single fiber.

Advantages of the Invention

[0015] Compared with the prior art, the advantages of the present invention using the above technical solution are as follows: First, the present invention improves the toughness index of a single fiber by adjusting the process parameters of each process of spinning, cooling, oiling / drawing, and setting / winding, effectively solves the problem that a single fiber breaks during the use process of a fabric, fundamentally solves the problem of hairiness, and further prevents the occurrence of the pilling problem. Second, by adjusting the temperature of the spinning process, the component loading process is optimized to ensure that the fiber yarn is extruded continuously and uniformly. By adjusting the cooling air temperature and air speed, the tow is cooled uniformly to ensure that the tow is stabilized and the swaying amplitude of the tow is reduced. By adjusting the speed of the oiling wheel and the concentration of the oil agent, the tow is controlled to an appropriate oiling rate. By adjusting the draw ratio and draw temperature, hairiness is removed to ensure that it cannot be wound around the roll. Third, the PE 100% spun yarn having hairiness and pilling prevention properties manufactured by the present invention has a fineness of 6 D for a single fiber, a strength of 2.7 to 2.9 CN / dtex, and a triangular or rectangular cross-section. By ensuring that the frictional force generated by friction during the use process of the fabric cannot resist the strength of a single fiber, it is ensured that a single fiber does not break, and the occurrence of the hairiness and pilling phenomenon is effectively avoided.

Modes for Carrying Out the Invention

[0016] The following will clearly and completely describe the technical solutions of the embodiments of the present invention by way of examples. Of course, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, any other embodiments obtained by those skilled in the art without inventive labor all fall within the protection scope of the present invention.

[0017] A method for manufacturing 100% PE spun yarn with anti-fuzzing and anti-pilling properties is as follows. Put the dried polyolefin chips into the raw material input chamber, first melt, filter, and measure them, then put them into the heat preservation box body, and then after passing through filtration and pressurization by components, extrude them uniformly from the spinneret. Set the melting temperature range to 270 - 290 °C, the box body temperature to 285 - 300 °C, load 80 - 100 mesh stainless steel sintered metal sand inside the component, and set the initial pressure of the component to 110 KG in the spinning step S1. Let the dropped tow reach the focusing point by air cooling, and set the air temperature to 16 - 18 °C and the air speed to 0.6 - 0.75 m / s in the cooling step S2. Oil the tow dropped from the air cooling window with an oiling wheel and then put it into the hot stretching section for traction and tension. Control the speed of the oiling wheel to 32 - 35 HZ, the concentration of the oil agent to 1:6, the oiling rate of the tow to 1.1 - 1.3%, the drawing multiple to 4.6 - 4.9, and the drawing temperature to 62 - 70 °C. The concentration of the oil agent refers to the ratio of the oil agent to the spinning solution in the oiling and stretching step S3. Perform stable shaping and winding on the tow after traction and tension, set the shaping temperature to 108 - 110 °C, and make the boiling water shrinkage rate of the tow 8% - 9% after shaping in the shaping and winding step S4, including.

[0018] By adjusting the temperature of the spinning process, the component loading process is optimized to ensure that the fiber yarn is extruded continuously and uniformly. By adjusting the cooling air temperature and wind speed, the tows are cooled uniformly to ensure that the tows are stabilized and the sway amplitude of the tows is reduced. By adjusting the speed of the oiling wheel and the concentration of the sizing agent, the tows are controlled to an appropriate oiling rate. By adjusting the draw ratio and draw temperature, the hairiness is removed to ensure that it cannot be wound around the roll, and the boiling water shrinkage rate is reduced to 8% - 9% to achieve a stable setting. The present invention optimizes the process parameters of each process of spinning, cooling, oiling / drawing, and setting / winding to improve the toughness index of the single fiber, effectively solve the problem of single fiber breakage during the use process of the fabric, fundamentally solve the problem of hairiness, and further prevent the occurrence of pilling problems.

[0019] In one embodiment, the molecular weight of the polyolefin chip is 680,000 - 750,000. Using ultra-high molecular weight polyethylene helps to improve the single fiber strength.

[0020] In one embodiment, in step S1, 110 - 120 g of stainless steel sintered metal sand is loaded inside the component. Optimizing the component loading process helps to extrude the fiber yarn continuously and uniformly.

[0021] In one embodiment, in step S1, the melting temperatures are set at 270°C, 290°C, 290°C, and 290°C, and the box body temperature is 290°C.

[0022] In one embodiment, the shape of the spinning holes on the spinneret presents a triangle or a rectangle. By ensuring that the frictional force generated by friction during the use process of the fabric cannot resist the strength of the single fiber, it is ensured that the single fiber does not break, and the occurrence of hairiness and pilling phenomena is effectively avoided.

[0023] In one embodiment, in step S2, the distance from the focusing point to the spinneret is 2 to 2.3 m. With an appropriate distance, both the cooling effect of the tow and the stabilization of the tow are achieved. If the distance is too short, the cooling of the tow will be insufficient, but if the distance is too long, the swaying amplitude of the tow will increase.

[0024] In one embodiment, in step S3, the oil coating rate of the tow is controlled to 1.2%. Uniform and appropriate oil coating lays a foundation for stretching and facilitates a stable shape.

[0025] In one embodiment, in step S4, the number of winding turns is 6 to 8. With a certain number of winding turns, the shaping time can be increased, which is helpful for the stable shaping of the tow.

[0026] The PE100% spun yarn having hairiness and pilling resistance is a spun yarn processed by the above manufacturing method.

[0027] In one embodiment, the PE100% spun yarn having hairiness and pilling resistance has a single fiber fineness of 6 D and can reach a strength of 2.7 to 2.9 CN / dtex.

[0028] Example 1 The manufacturing method of the PE100% spun yarn having hairiness and pilling resistance is as follows: Put the dried polyolefin chips into the raw material input chamber, first melt, filter, and measure them, then put them into the heat preservation box, and then pass through filtration and pressurization by components and then extrude uniformly from the spinneret. Set the melt temperature from the raw material discharge chamber to the spinneret to 270 °C, 290 °C, 290 °C, and 290 °C, set the box temperature to 290 °C, load 120 g of 80 - 100 mesh stainless steel sintered metal sand inside the component, and set the initial pressure of the component to 110 KG for the spinning step S1. Let the dropped tow reach the focusing point by air cooling, set the air temperature to 17 °C, the air speed to 0.6 m / s, and the distance from the focusing point to the spinneret to 2 m for the cooling step S2. The oiling and stretching step S3 is to oil the tows that have fallen from the cooling air window with an oiling wheel and then put them into the hot stretching section for traction and tension. Control the speed of the oiling wheel at 32HZ, the concentration of the oil agent at 1:6, the oiling rate of the tows at 1.2%, the drawing multiple at 4.8, and the drawing temperature at 70°C. It includes the shaping and winding step S4 of performing stable shaping and winding on the tows after traction and tension. Set the shaping temperature at 108°C, the number of winding times at 6 times, and make the boiling water shrinkage rate of the tows 8% - 9% after shaping.

[0029] The PE spun yarn produced according to this example has a PE molecular weight of 680,000, a fineness of 6D for single fibers, a strength of 2.7 CN / dtex, a triangular cross-section. When it is produced into a 300D / 48F fabric, the fabric is thick and has texture.

[0030] Example 2 A method for manufacturing a PE100% spun yarn with hairiness and pilling resistance is as follows. Put the dried polyolefin chips into the raw material input chamber. First, melt, filter, and measure them, then put them into the heat preservation box body. Next, after passing through filtration and pressurization by components, extrude them uniformly from the spinneret. Set the melting temperature from the raw material discharge chamber to the spinneret at 270°C, 290°C, 290°C, and 290°C, set the box body temperature at 299°C, load 120g of 80 - 100 mesh stainless steel sintered metal sand inside the component, and set the initial pressure of the component at 110KG. This is the spinning step S1. The dropped tows are made to reach the focusing point by air cooling. Set the air temperature at 16°C, the wind speed at 0.7m / s, and the distance from the focusing point to the spinneret at 2.2m. This is the cooling step S2. The oiling and stretching step S3 is to oil the tows that have fallen from the cooling air window with an oiling wheel and then put them into the hot stretching section for traction and tension. Control the speed of the oiling wheel at 35HZ, the concentration of the oil agent at 1:6, the oiling rate of the tows at 1.2%, the drawing multiple at 4.9, and the drawing temperature at 66°C. It includes the shaping and winding step S4 of performing stable shaping and winding on the tows after traction and tension. Set the shaping temperature at 109°C, the number of winding times at 7 times, and make the boiling water shrinkage rate of the tows 9% after shaping.

[0031] The PE spun yarn produced according to this example has a PE molecular weight of 720,000, a fineness of 6 D for a single fiber, a strength of 2.8 CN / dtex, a triangular cross-section, and when it is produced into a 200D / 24F fabric, the fabric is smooth and slippery.

[0032] Example 3 A method for manufacturing a 100% PE spun yarn having hairiness and pilling resistance is as follows: Put the dried polyolefin chips into the raw material input chamber, first melt, filter, and measure them, then put them into the heat preservation box body, and then, after passing through filtration and pressurization by components, extrude them uniformly from the spinneret. Set the melting temperature from the raw material discharge chamber to the spinneret to 270 °C, 290 °C, 290 °C, and 290 °C, set the box body temperature to 299 °C, load 110 g of 80 - 100 mesh stainless steel sintered metal sand inside the component, and set the initial pressure of the component to 110 KG in the spinning step S1; Let the dropped tow reach the focusing point by air cooling, set the air temperature to 17 °C, the air velocity to 0.75 m / s, and the distance from the focusing point to the spinneret to 2.3 m in the cooling step S2; Oil the tow dropped from the cooling air window with an oiling wheel and then put it into the hot stretching section for traction and tension. Control the speed of the oiling wheel to 35 HZ, the concentration of the oil agent to 1:6, the oiling rate of the tow to 1.2%, the drawing multiple to 4.6, and the drawing temperature to 62 °C in the oiling and stretching step S3; Perform stable shaping and winding on the tow after traction and tension. Set the shaping temperature to 110 °C, the number of winding times to 7 times, increase the shaping time by increasing the shaping temperature and increasing the number of winding times to reduce the boiling water shrinkage rate to 9%, thereby realizing stable shaping in the shaping and winding step S4, and it includes.

[0033] The PE spun yarn produced according to this example has a PE molecular weight of 740,000, a fineness of 6 D for a single fiber, a strength of 2.9 CN / dtex, a rectangular cross-section, and when it is produced into a 150D / 24F fabric, the fabric is smooth and slippery, and the hand feeling is soft.

[0034] Example 4 The manufacturing method of 100% PE spun yarn with anti-fuzzing and anti-pilling properties is as follows: Put the dried polyolefin chips into the raw material feeding chamber, first melt, filter, and measure them, then put them into the heat preservation box body. Next, after passing through filtration and pressurization by components, extrude them uniformly from the spinneret. Set the melt temperature from the raw material discharge chamber to the spinneret to 275 °C, 285 °C, 290 °C, and 290 °C, set the box body temperature to 290 °C, load 110 g of 80 - 100 mesh stainless steel sintered metal sand inside the component, and set the initial pressure of the component to 110 KG in the spinning step S1. Let the dropped tow reach the focusing point by air cooling, set the air temperature to 17 °C, the air speed to 0.7 m / s, and the distance from the focusing point to the spinneret to 2.1 m in the cooling step S2. Oil the tow dropped from the cooling air window with an oiling wheel and then put it into the hot stretching section for traction and tension. Control the speed of the oiling wheel to 35 HZ, the concentration of the oil agent to 1:6, the oiling rate of the tow to 1.1%, the draw ratio to 4.6, and the draw temperature to 62 °C in the oiling and stretching step S3. Perform stable shaping and winding on the tow after traction and tension. Set the shaping temperature to 110 °C, the number of winding times to 7 times, increase the shaping temperature and the number of winding times to increase the shaping time, and reduce the boiling water shrinkage rate to 9% to achieve stable shaping in the shaping and winding step S4.

[0035] The PE spun yarn produced according to this example has a PE molecular weight of 720,000, a fineness of 6 D for a single fiber, a strength of 2.9 CN / dtex, a rectangular cross-section. When it is made into a 150 D / 24 F fabric, the fabric is smooth and slippery, and the handle is soft.

[0036] When related tests were conducted on the PE100% spun yarns manufactured in Examples 1 to 4 and commercially available products, compared with the commercially available products, the PE molecular weight was improved from 70,000 to 740,000, the fineness of the single fiber increased from 3D to 6D, the strength was improved from 1.8 CN / dtex to 2.9 CN / dtex, the cross-section changed from circular to triangular or rectangular, and by making the frictional force generated by friction during the use of the fabric unable to resist the strength of the single fiber, it is ensured that the single fiber does not break, and the occurrence of hairiness and pilling phenomena is effectively avoided.

[0037] In addition, in this specification, relational terms such as "first" and "second" are merely for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. And the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device containing a series of elements includes not only these elements but also other elements not expressly listed, or elements inherent to such a process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, as will be understood by those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and gist of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. A method for manufacturing a 100% PE filament yarn having anti-fuzzing and anti-pilling properties, comprising: a first step of feeding dried polyolefin chips into a raw material input chamber; a second step of melting, filtering, and metering the fed polyolefin chips to obtain molten polyolefin; a third step of placing the molten polyolefin into a box-shaped structure; a fourth step of filtering and pressurizing the molten polyolefin placed in the box-shaped structure by filtering and pressurizing means; and a fifth step of uniformly extruding the molten polyolefin that has undergone the filtering and pressurizing from a spinneret, wherein the melting temperature range in the second step is 270 to 290 °C, the temperature of the box-shaped structure in the third step is 285 to 300 °C, in the fourth step, a spinning step S1 of loading 80 to 100 mesh stainless steel sintered metal sand inside the filtering and pressurizing means; a cooling step S2 of causing the dropped tow to reach a focusing point by air cooling, with the air temperature being 16 to 18 °C and the air velocity being 0.6 to 0.75 m / s; an oiling and stretching step S3 of oiling the tow that has fallen from the cooling air window with an oiling roller and then putting it into a hot stretching section to perform traction and tension, controlling the rotational frequency of the oiling roller to 32 to 35 Hz, the oiling rate which is the ratio of the mass of the sizing agent attached to the dry mass of the tow to 1.1 to 1.3%, the draw ratio to 4.6 to 4.9, and the drawing temperature to 62 to 70 °C; a heat setting and winding step S4 of performing stable heat setting and winding on the tow after traction and tension, setting the heat setting temperature to 108 to 110 °C, and making the boiling water shrinkage rate of the tow 8% to 9% after heat setting, including wherein the cross-sectional shape of the single fiber of the filament yarn is triangular or rectangular A method for manufacturing a 100% PE filament yarn having anti-fuzzing and anti-pilling properties, characterized by the above.

2. The method for manufacturing a 100% PE filament yarn having anti-fuzzing and anti-pilling properties according to Claim 1, characterized in that the weight average molecular weight of the polyolefin chips is 680,000 to 750,000.

3. The method for manufacturing a 100% PE filament yarn having anti-fuzzing and anti-pilling properties according to Claim 1, characterized in that in step S1, 110 to 120 g of stainless steel sintered metal sand is loaded inside the filtering and pressurizing means.

4. In step S1, the melting temperature is set to 270°C, 290°C, 290°C, and 290°C, and the method for manufacturing a 100% PE filament yarn having hairiness and pilling prevention properties according to claim 1, characterized in that the temperature of the box body is 290°C.

5. The method for manufacturing a 100% PE filament yarn having hairiness and pilling prevention properties according to claim 1, characterized in that the shape of the spinning holes on the spinneret is triangular or rectangular.

6. In step S2, the distance from the focusing point to the spinneret is 2 to 2.3 m, and the method for manufacturing a 100% PE filament yarn having hairiness and pilling prevention properties according to claim 1.

7. In step S3, the method for manufacturing a 100% PE filament yarn having hairiness and pilling prevention properties according to claim 1, characterized in that the oil application rate of the tow is controlled to 1.2%.

8. In step S4, the method for manufacturing a 100% PE filament yarn having hairiness and pilling prevention properties according to claim 1, characterized in that the number of winding times is 6 to 8 times.

9. A 100% PE filament yarn having hairiness and pilling prevention properties, which is a filament yarn processed by the manufacturing method according to any one of claims 1 to 8.

10. The 100% PE filament yarn having hairiness and pilling prevention properties according to claim 9, characterized in that the fineness of the single fiber is 6 D.