Anti-pilling pe 100% yarn and method for making the same

Abstract

The application provides an anti-pilling PE 100% yarn and a preparation method thereof, and relates to the technical field of PE yarns. The preparation method of the anti-pilling PE 100% yarn comprises the steps of spinning, cooling, oiling, drafting and setting winding. The process parameters of each process of spinning, cooling, oiling, drafting and setting winding are adjusted to improve the toughness index of the monofilament, effectively solve the problem of monofilament breakage of the fabric during use, fundamentally solve the problem of fuzz, and further eliminate the generation of the pilling problem. The linear density of the anti-pilling PE 100% yarn monofilament prepared by the application is 6D, the strength is 2.7-2.9 CN / dtex, and the cross section is triangular or rectangular. When the fabric is subjected to friction during use, the friction force is not enough to overcome the strength of the monofilament, so that the monofilament is not broken, and the generation of the fuzz and pilling phenomenon is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of PE yarn, in particular to anti-pilling PE100% yarn and its preparation method. BACKGROUND

[0002] At present, the fabrics woven by yarns for clothing, decoration and the like on the market are prone to single yarn breakage under friction and other forces due to the strength of the yarns, and the broken yarns are still on the fabric, and after friction, the broken yarns are intertwined together to form small yarn balls, thereby reducing the comfort of the fabric and affecting the appearance.

[0003] The existing technology mainly increases the cohesion of the filament by twisting to solve the problem of pilling, but the production cost is increased due to the additional process, and the fabric hand is also hard, and the fabric surface is rough and uneven due to the twist, and the luster is not bright. SUMMARY

[0004] In view of the defects of the prior art, the anti-pilling PE100% yarn and its preparation method are provided, the size of the molecular weight of the fiber is improved, the tensile process, the strength, the elongation and the cross section of the single yarn are improved, the problem of single yarn breakage of the fabric during use is effectively solved, the problem of fuzz is fundamentally solved, and the problem of pilling is prevented.

[0005] The technical scheme adopted by the present application to solve the technical problem is a preparation method of anti-pilling PE100% yarn, comprising the following steps:

[0006] S1, spinning, the dried polyolefin chips are put into the feeding bin, first filtered and metered after melting, then enter the heat preservation box, and then uniformly extruded from the spinneret after filtering and pressurizing of the assembly, the melting temperature range is 270-290℃, the box temperature is 285-300℃, the assembly is filled with 80-100 mesh stainless steel sintered metal sand, the initial pressure of the assembly is 110KG,

[0007] S2, cooling, the dropped filament bundle is cooled by air to the collection point, the air temperature is 16-18℃, and the air speed is 0.6-0.75m / s,

[0008] S3, oiling and drafting, the filament bundle coming down from the cooling air window is oiled by the oil wheel and then enters the heat-drawing part for drawing and stretching, the oil wheel speed is 32-35HZ, the oil concentration is 1:6, the oiling rate of the filament bundle is controlled to be 1.1-1.3%, the drawing ratio is 4.6-4.9, and the drawing temperature is 62-70℃,

[0009] S4, setting and winding, the drawn and stretched filament bundle is stably set and wound, the setting temperature is 108-110℃, and the boiling water shrinkage of the set filament bundle is 8%-9%.

[0010] Specifically, the polyolefin chip molecular weight is 680-750 thousand.

[0011] Specifically, in step S1, 110-120 g of stainless steel sintered metal sand is filled in the assembly.

[0012] Specifically, in step S1, the melting temperature is set to 270℃, 290℃, 290℃ and 290℃, and the box temperature is 290℃.

[0013] Specifically, the shape of the spinning hole on the spinneret is triangular or rectangular.

[0014] Specifically, in step S2, the distance between the bundle point and the spinneret is 2-2.3 m.

[0015] Specifically, in step S3, the oiling rate of the filament is controlled to be 1.2%.

[0016] Specifically, in step S4, the winding turns are 6-8 turns.

[0017] The anti-pilling PE 100% yarn is processed by the above preparation method.

[0018] Specifically, the anti-pilling PE 100% yarn has a single filament fineness of 6D.

[0019] Compared with the prior art, the advantages of the above technical scheme are:

[0020] 1. The present application adjusts the process parameters of spinning, cooling, oiling, drawing and setting of each process to improve the toughness index of the single filament, effectively solves the problem of single filament breakage of the fabric during use, fundamentally solves the problem of fuzz, and further eliminates the generation of pilling,

[0021] 2. By adjusting the temperature of the spinning process, optimizing the assembly filling process, ensuring continuous and uniform extrusion of the fiber filament; by adjusting the cooling air temperature and air speed, the filament bundle is cooled uniformly to ensure the stability of the filament bundle and reduce the shaking amplitude of the filament bundle; by adjusting the oil wheel speed and oil concentration, the appropriate oiling rate of the filament bundle is controlled; by adjusting the stretching multiple and stretching temperature, the fuzz is eliminated to ensure no winding,

[0022] 3. The anti-pilling PE 100% yarn single filament prepared by the present application has a fineness of 6D, a strength of 2.7-2.9 CN / dtex, and a cross section of triangular or rectangular shape, so that when the fabric is subjected to friction during use, the friction is not enough to overcome the strength of the single filament, thereby ensuring that the single filament does not break, and effectively avoiding the generation of pilling phenomenon. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] The preparation method of the anti-pilling PE 100% yarn comprises the steps of:

[0025] S1, spinning, the dried polyolefin chips are put into a feeding bin, first filtered and metered after melting, then enter a heat preservation box, and then uniformly extruded from a spinneret after being filtered and pressurized by an assembly, the melting temperature range is 270-290 DEG C, the box temperature is 285-300 DEG C, the assembly is internally filled with 80-100 mesh stainless steel sintered metal sand, and the initial pressure of the assembly is 110 KG,

[0026] S2, cooling, the spun yarn is cooled by air to a collection point, the air temperature is 16-18 DEG C, and the air speed is 0.6-0.75 m / s,

[0027] S3, oiling and drafting, the spun yarn under the cooling air window is oiled by an oil wheel and then enters a hot drafting section for drafting and stretching, the oil wheel speed is 32-35 HZ, the oil agent concentration is 1:6, the spun yarn oiling rate is controlled to be 1.1-1.3%, the stretching multiple is 4.6-4.9, and the stretching temperature is 62-70 DEG C, the oil agent concentration refers to the ratio of the oil agent to the spinning solution,

[0028] S4, setting and winding, the drafted spun yarn is stably set and wound, the setting temperature is 108-110 DEG C, and the boiled water shrinkage of the spun yarn after setting is 8%-9%.

[0029] By adjusting the temperature of the spinning process, optimizing the assembly filling process, ensuring the continuous and uniform extrusion of the fiber yarn, adjusting the cooling air temperature and speed to make the spun yarn cooling uniform, ensuring the stability of the spun yarn and reducing the fluctuation amplitude of the spun yarn, adjusting the oil wheel speed and the oil agent concentration to control the appropriate oiling rate of the spun yarn, adjusting the stretching multiple and the stretching temperature to eliminate the hair and ensure no winding, and reducing the boiled water shrinkage to 8%-9% to obtain stable setting, the process parameters of the spinning, cooling, oiling and drafting and setting and winding processes are optimized to improve the toughness index of the single yarn, effectively solve the problem of single yarn breakage in the use process of the fabric, fundamentally solve the problem of fuzz, and further eliminate the generation of pilling.

[0030] In one embodiment, the molecular weight of the polyolefin chips is 680-750 thousand. The use of ultra-high molecular weight polyethylene is beneficial to improve the strength of the single yarn.

[0031] In one embodiment, in step S1, the assembly is filled with 110-120 g of stainless steel sintered metal sand. The assembly filling process is optimized to facilitate continuous and uniform extrusion of the fiber filaments.

[0032] In one embodiment, in step S1, the melting temperature is set to 270℃, 290℃, 290℃ and 290℃, and the box temperature is 290℃.

[0033] In one embodiment, the shape of the spinning orifice on the spinneret is triangular or rectangular. When the fabric is subjected to friction during use, the friction is not enough to overcome the strength of the filaments, thereby ensuring that the filaments do not break, effectively avoiding the generation of pilling phenomenon.

[0034] In one embodiment, in step S2, the distance between the collection point and the spinneret is 2-2.3 m. The appropriate distance takes into account the cooling effect of the filament bundle and the stability of the filament bundle. If the distance is too short, the filament bundle will not cool enough; if the distance is too long, the filament bundle will sway too much.

[0035] In one embodiment, in step S3, the oiling rate of the filament bundle is controlled to be 1.2%. Uniform and appropriate oiling lays a good foundation for drafting and facilitates stable setting.

[0036] In one embodiment, in step S4, the winding number is 6-8 turns. A certain number of winding turns can increase the setting time, which is beneficial to the stable setting of the filament bundle.

[0037] The anti-pilling PE 100% yarn is processed by the above preparation method.

[0038] In one embodiment, the anti-pilling PE 100% yarn has a filament linear density of 6D and a strength of 2.7-2.9 CN / dtex.

[0039] Embodiment 1: A preparation method of an anti-pilling PE 100% yarn, comprising the steps of:

[0040] S1, spinning, the dried polyolefin chips are put into the feeding bin, first filtered and metered, then enter the heat preservation box, and then uniformly extruded from the spinneret after being filtered and pressurized by the assembly. The melting temperature is set to 270℃, 290℃, 290℃ and 290℃ from the feeding bin to the spinneret, the box temperature is 290℃, the assembly is filled with 120 g of 80-100 mesh stainless steel sintered metal sand, and the initial pressure of the assembly is 110 KG,

[0041] S2, cooling, the dropped filament bundle is air-cooled to the collection point, the air temperature is 17℃, the air speed is 0.6 m / s, and the distance between the collection point and the spinneret is 2 m,

[0042] S3, oiling drawing, the yarns from the cooling wind window are oiled by an oil wheel and then enter a hot drawing part to be drawn, the oil wheel speed is 32HZ, the oil concentration is 1:6, the yarn oiling rate is controlled to be 1.2%, the drawing multiple is 4.8, and the drawing temperature is 70℃,

[0043] S4, setting and winding, the drawn yarns are stably set and wound, the setting temperature is 108℃, the winding turns are 6, and the boiling water shrinkage of the set yarns is 8%-9%.

[0044] The PE yarn prepared in the embodiment has a PE molecular weight of 680,000, a linear density of 6D, a strength of 2.7 CN / dtex, and a triangular cross section; and a 300D / 48F fabric is made therefrom, which is thick and has a texture.

[0045] Embodiment 2: a preparation method of an anti-pilling PE 100% yarn, comprising the steps of:

[0046] S1, spinning, the dried polyolefin chips are put into a feeding bin, are filtered and metered first, then enter a heat preservation box, are filtered and pressurized by an assembly, and are uniformly extruded from a spinneret, the melting temperature is set to be 270℃, 290℃, 290℃ and 290℃ from the feeding bin to the spinneret, the box temperature is 299℃, the assembly is filled with 120g of 80-100 mesh stainless steel sintered metal sand, and the assembly initial pressure is 110KG,

[0047] S2, cooling, the dropped yarns are air-cooled to a collection point, the air temperature is 16℃, the air speed is 0.7m / s, and the distance between the collection point and the spinneret is 2.2m,

[0048] S3, oiling drawing, the yarns from the cooling wind window are oiled by an oil wheel and then enter a hot drawing part to be drawn, the oil wheel speed is 35HZ, the oil concentration is 1:6, the yarn oiling rate is controlled to be 1.2%, the drawing multiple is 4.9, and the drawing temperature is 66℃,

[0049] S4, setting and winding, the drawn yarns are stably set and wound, the setting temperature is 109℃, the winding turns are 7, and the boiling water shrinkage of the set yarns is 9%.

[0050] The PE yarn prepared in the embodiment has a PE molecular weight of 720,000, a linear density of 6D, a strength of 2.8 CN / dtex, and a triangular cross section; and a 200D / 24F fabric is made therefrom, which is flat and smooth.

[0051] Embodiment 3: a preparation method of an anti-pilling PE 100% yarn, comprising the steps of:

[0052] S1, spinning, the dried polyolefin chips are put into the feeding bin, first through the melt filtration metering, then into the heat preservation box, and then uniformly extruded from the spinneret after the assembly filtration and pressurization, the melt temperature is set to 270℃, 290℃, 290℃ and 290℃ from the feeding bin to the spinneret, the box temperature is 299℃, the assembly is filled with 110g of 80-100 mesh stainless steel sintered metal sand, and the initial pressure of the assembly is 110KG,

[0053] S2, cooling, the dropped yarns reach the bundling point after air cooling, the air temperature is 17℃, the air speed is 0.75m / s, and the distance between the bundling point and the spinneret is 2.3m,

[0054] S3, oiling and drawing, the yarns from the cooling air window are oiled by the oil wheel and then enter the hot drawing part for drawing and stretching, the oil wheel speed is 35HZ, the oil concentration is 1:6, the yarn oiling rate is controlled to be 1.2%, the drawing ratio is 4.6, and the drawing temperature is 62℃,

[0055] S4, setting and winding, the drawn yarns are stably set and wound, the setting temperature is 110℃, the winding turns are 7 turns, the setting temperature is increased, the winding turns are increased to increase the setting time, and the boiling water shrinkage is reduced to 9% to obtain stable forming.

[0056] The PE yarn prepared in the embodiment has a PE molecular weight of 740,000, a single yarn fineness of 6D, a strength of 2.9CN / dtex, and a rectangular cross section; and a 150D / 24F fabric is made, which is flat, smooth and soft.

[0057] Example 4: a preparation method of a 100% PE yarn with anti-pilling property, comprising the following steps:

[0058] S1, spinning, the dried polyolefin chips are put into the feeding bin, first through the melt filtration metering, then into the heat preservation box, and then uniformly extruded from the spinneret after the assembly filtration and pressurization, the melt temperature is set to 270℃, 290℃, 290℃ and 290℃ from the feeding bin to the spinneret, the box temperature is 299℃, the assembly is filled with 110g of 80-100 mesh stainless steel sintered metal sand, and the initial pressure of the assembly is 110KG,

[0059] S2, cooling, the dropped yarns reach the bundling point after air cooling, the air temperature is 17℃, the air speed is 0.75m / s, and the distance between the bundling point and the spinneret is 2.3m,

[0060] S3, oiling and drawing, the yarns from the cooling air window are oiled by the oil wheel and then enter the hot drawing part for drawing and stretching, the oil wheel speed is 35HZ, the oil concentration is 1:6, the yarn oiling rate is controlled to be 1.2%, the drawing ratio is 4.6, and the drawing temperature is 62℃,

[0061] S4, setting winding, the tow after traction and drawing is stably set and wound, setting temperature 110℃, winding turns 7, increasing setting temperature, increasing winding turns to increase setting time, reducing boiling water shrinkage to 9% to get stable forming.

[0062] The PE yarn prepared in this embodiment has a PE molecular weight of 720,000, a linear density of 6D, a strength of 2.9 CN / dtex, and a rectangular cross section. The 150D / 24F fabric made therefrom is flat, smooth and soft.

[0063] The PE 100% yarn prepared in Examples 1-4 and the commercially available product are tested. Compared with the commercially available product, the PE molecular weight is increased from 70,000 to 740,000, the linear density of the single yarn is increased from 3D to 6D, the strength is increased from 1.8 CN / dtex to 2.9 CN / dtex, and the cross section is changed from circular to triangular or rectangular. When the fabric is subjected to friction during use, the friction is not enough to damage the strength of the single yarn, thereby ensuring that the single yarn does not break, and effectively avoiding the generation of pilling.

[0064] It should be noted that the relational terms herein such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0065] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for preparing 100% PE filaments with anti-pilling properties, characterized in that, Including the following steps: S1. Spinning: Dried polyolefin chips with a molecular weight of 680,000-750,000 are fed into the feeding hopper. After being melt-filtered and metered, they enter the insulated chamber, then pass through the component filtration and pressurization process before being uniformly extruded from the spinneret. The spinneret's spinneret orifices are triangular or rectangular in shape. The melting temperature range is 270-290℃, and the chamber temperature is 285-300℃. The component is filled with 80-100 mesh, 110-120g stainless steel sintered metal sand. The initial pressure of the component is 110KG. S2. Cooling: The dropped filament bundles are cooled by air until they reach the bundling point. The air temperature is 16-18℃, and the air velocity is 0.6-0.75m / s. S3. Oiling and drawing: The filament bundle coming from the cooling vent is oiled by an oil roller and then enters the hot drawing section for traction and stretching. The oil roller speed is 32-35 Hz, the oil concentration is 1:6, the oiling rate of the filament bundle is controlled at 1.1-1.3%, the drawing ratio is 4.6-4.9, and the drawing temperature is 62-70℃. S4. Shaping and winding: The stretched filament bundle is stabilized and wound with 6-8 turns. The shaping temperature is 108-110℃. The boiling water shrinkage rate of the filament bundle after shaping is 8%-9%.

2. The method for preparing anti-pilling PE 100% tow according to claim 1, characterized in that, In step S1, the melting temperature is set to 270℃, 290℃, 290℃ and 290℃, and the chamber temperature is 290℃.

3. The method for preparing anti-pilling PE 100% tow according to claim 1, characterized in that, In step S2, the distance between the clustering point and the spinneret is 2-2.3m.

4. The method for preparing anti-pilling PE 100% tow according to claim 1, characterized in that, In step S3, the oiling rate of the filament bundle is controlled at 1.2%.

5. Anti-pilling PE 100% filament bundle, which is a filament bundle processed by the preparation method described in any one of claims 1-4.

6. The anti-pilling PE 100% tow according to claim 5, characterized in that, The linear dimension of the monofilament is 6D.