A cut-resistant composite yarn and articles made therefrom

Abstract

The present application relates to a kind of anti-cut composite yarn and the article prepared from it.The anti-cut composite yarn is prepared by the following steps: (1) selecting 200-600D high cut-resistant ultrahigh molecular weight polyethylene fiber, doubling twist; (2) selecting diameter 0.01-0.05MM alloy wire, 0.02-0.05MM tungsten wire as core wire, 25-100D polyester yarn as core wire outer wrapping yarn, tungsten wire and alloy wire outer wrapping polyester form core wire; (3) the high cut-resistant ultrahigh molecular weight polyethylene fiber after doubling twist is placed on the positioner, after heating device, with core wire, outer wrapping polyester yarn is fed at the same time, and composite yarn is coated. The article prepared from the composite yarn of the present application, such as cut-resistant gloves, can reach American standard A8 according to ASTM F2992 / F2992M-15 test requirements, and successfully overcome the risk that the existing anti-cut yarn knitted gloves cannot reach cut-resistant grade A8 after coating. The gloves knitted from the composite yarn of the present application and auxiliary yarn, for example, using 13GU2 weaving method, the weight of knitted gloves is about 52-65 grams per pair.

Description

TECHNICAL FIELD

[0001] Disclosed is a cut-resistant composite yarn and an article prepared therefrom. BACKGROUND

[0002] With the continuous development of economy, the improvement of living standards, and the enhancement of people's safety awareness, the demand for labor protection products is increasing, and the variety and quality of products are becoming more and more demanding. Some labor protection gloves that are comfortable, light and flexible, and have high cut resistance are in great demand in the market.

[0003] Due to the high cut-resistant ultrahigh molecular weight polyethylene line density and modulus parameters, the yarn is prone to static electricity at room temperature, resulting in loose and tangled yarn. This problem can be solved by doubling the twist, but the doubled yarn increases the twist and becomes hard in texture, which can easily cause yarn breakage during the subsequent coating process and is difficult to detect. After coating into a composite yarn, the surface of the fabric also has a tangled phenomenon. In order to avoid such problems, most high-performance cut-resistant gloves currently use ordinary polyethylene with lower line density and modulus. The cut resistance of ordinary polyethylene is much lower than that of high cut-resistant ultrahigh molecular weight polyethylene, and it is flexible. However, in order to achieve the cut resistance level, at least three of the following are usually used as the core yarn during coating: thick steel wire, tungsten wire or glass fiber, basalt. By continuously increasing the twist, the cut resistance of the coated yarn is improved. Due to the high content of metal wires and other cut-resistant fibers, the yarn has high twist, poor elasticity, and high difficulty in knitting. The knitted gloves have distorted fingers and cannot be configured with a rubber dipping layer. If the yarn contains glass fiber, there is a risk of glass fiber breaking during knitting, which can cause a series of problems such as redness and allergy of the wearer's hands, and the cut resistance level of the fabric is unstable. There is a risk of not meeting the ASTM F2992 / F2992M-15 standard (cut resistance level A8). After setting different rubber dipping coatings, the gloves become heavier and have poor air permeability. SUMMARY

[0004] In view of the problems of the prior art, the present application provides a cut-resistant composite yarn and an article prepared therefrom, which can solve the problems caused by the coating process of high cut-resistant ultrahigh molecular weight polyethylene thread, and the coated composite yarn can solve the defects caused by the cut-resistant yarn prepared from ordinary polyethylene with lower line density and modulus.

[0005] The cut-resistant composite yarn of the present application is prepared by the following steps:

[0006] (1) selecting 200-600D high cut-resistant ultrahigh molecular weight polyethylene fiber, preferably 250-550D, preferably 300-500D, preferably 350-450D, for example 400D high cut-resistant ultrahigh molecular weight polyethylene fiber, and doubling to form a first outer wrapping yarn;

[0007] (2) selecting alloy wire with diameter of 0.01-0.05 MM, preferably 0.02-0.04 MM, for example 0.03 MM, tungsten wire with diameter of 0.02-0.05 MM, preferably 0.03-0.04 MM as core wire, and polyester wire with 25-100 D, preferably 25-75 D, preferably 45-100 D as second outer wrapping yarn (also referred to as outer layer yarn), the tungsten wire and the alloy wire being wrapped by the polyester to form the core wire of the composite yarn;

[0008] (3) simultaneously feeding the first outer wrapping yarn of step (1) and the core wire of step (2) to the polyester wire, the first outer wrapping yarn of step (1) being heated by one side with heating device, and the core wire of step (2) being heated by the other side.

[0009] In the present application, preferably, the high cut-resistant ultra-high molecular weight polyethylene fiber meets one or more, preferably all four of the following: 1) linear density is generally 534-556 dtex, for example 545 dtex, 2) breaking strength ≥ 16.0 cN / dtex, for example 16.0-25.0 cN / dtex, further for example 21 cN / dtex, 22 cN / dtex, 23 cN / dtex, 3) elongation at break ≤ 4.0%, for example 1.5-3.5%, further for example 2.8%, 2.9%, 3.0%, 4) modulus ≥ 800 cN / dtex, for example 810-950 cN / dtex, further for example 900, 905, 910, 915 cN / dtex. Commercially available high cut-resistant ultra-high molecular weight polyethylene fibers can be used, for example ZT50 series produced by Jiangsu Jiujiujiu Technology Co., Ltd.

[0010] Further, the high cut-resistant ultra-high molecular weight polyethylene fiber is set to Z twist with twist value of, for example, 60-130, preferably 60-120, preferably 70-110, preferably 80-100.

[0011] In one embodiment, the high cut-resistant ultra-high molecular weight polyethylene has a weight average molecular weight of 1-4 million.

[0012] Further, in step (2), the core wire is set to S twist with twist value of 200-300, preferably 220-280, preferably 240-260, for example 250.

[0013] Further, the alloy wire is a steel wire, preferably a nickel-tungsten alloy wire, for example an alloy wire known in the art for use in cut-resistant yarns can be used.

[0014] Further, the proportion of polyethylene fiber, alloy wire, tungsten wire, and polyester is 50-55:7-13:20-26:13-19; preferably 50-52:7-9:21-23:14-18, preferably 52-55:8-10:20-22:15-17, preferably 50-51:10-11:21-23:15-16, in terms of yarn D number. The proportion of polyester used in steps (2) and (3) is 1:1-2.5, preferably 1:1.1-2.2, preferably 1:1.2-2.0, preferably 1:1.3-1.9, preferably 1:1.4-1.8, such as 1:1.5, 1:1.6, 1:1.7.

[0015] Further, in step (3), the covering twist is set to upper S twist and lower Z twist, with a twist value of 200-800, preferably 650-750.

[0016] Further, in step (3), the heating temperature is 45-80°C, preferably 45-75°C, preferably 50-70°C, preferably 52-68°C, preferably 55-65°C, preferably 58-62°C, and preferably about 60°C.

[0017] Further, an infrared heating device is used for heating.

[0018] Further, a cutting-resistant composite yarn processing equipment is installed with a heating device with temperature adjustment, and each of the 9 sections of the processing equipment is equipped with 1-3, preferably about 2, temperature-adjustable infrared heating devices, which are installed at the bottom of the machine, 30-70 cm, preferably 40-60 cm, and preferably about 50 cm, away from the lower roller device. The high-cutting-resistant ultra-high molecular weight polyethylene fiber, preferably 200-600D polyethylene fiber, is placed on the positioner after being doubled twisted, and each of the 9 sections of the processing equipment is equipped with 6 positioners. The device is 50-70 cm, preferably about 60 cm, away from the front of the processing equipment, and is 10±2 cm, preferably about 10 cm, higher than the ground. The two ends are equipped with positioning devices to prevent deviation during production. The high-cutting-resistant ultra-high molecular weight polyethylene fiber after doubling is evenly heated on the positioner by the heating device (heating temperature 45-80°C, preferably 50-70°C, preferably 55-65°C, and preferably about 60°C). The heated yarn is flexible and can be combined with alloy wire with a diameter of 0.01-0.05 mm, preferably 0.02-0.04 mm, tungsten wire with a diameter of 0.02-0.05 mm, preferably 0.03-0.04 mm, and 25-100D, preferably 25-75D, polyester yarn. The yarn with the heating device can solve the problems caused by the high-cutting-resistant ultra-high molecular weight polyethylene yarn during the covering process.

[0019] Further, in the heating, the yarn is fed in with the core yarn simultaneously at a drawing speed of 16-25 meters per minute, preferably 18-22 meters per minute, preferably 19-20 meters per minute through the heating device, for example, an infrared heating device, and the covering twist of the composite yarn is set as over S twist and under Z twist, with a twist value of 200-800, preferably 650-750.

[0020] In one embodiment, the anti-cutting composite yarn processing equipment comprises a yarn positioning device for fixing the yarn, a heating device, a guide wheel, a roller, a lower layer spool, an upper layer spool, a drafting roller, a guide rod, a friction roller, and a paper tube, wherein the high-cutting-resistant ultra-high molecular weight polyethylene yarn and the core yarn are fixed by the yarn positioning device, the high-cutting-resistant ultra-high molecular weight polyethylene yarn is heated by the heating device through the guide wheel, the guide wheel draws the high-cutting-resistant ultra-high molecular weight polyethylene yarn and the core yarn to the roller, the yarn tension is controlled again, and then the yarn is wrapped in the lower layer spool, and then wrapped out of the upper layer spool, the yarn coming out of the upper layer spool is drawn by the drafting roller to form a composite yarn, the composite yarn is guided by the guide rod to the friction roller (supporting the paper tube), and the finished composite yarn is obtained by winding the yarn on the paper tube. In this application, the positioning device is a common positioning device for fixing the yarn in the art.

[0021] In the present application, the high-cutting-resistant ultra-high molecular weight polyethylene fiber is doubled twisted by a doubling and twisting machine before being covered. The doubled twisted yarn has increased twist, which makes the yarn hard and prone to breakage during the covering process. However, the core yarn of the present application has similar thickness to the high-cutting-resistant ultra-high molecular weight polyethylene yarn, but has a small twist, which results in poor covering effect and causes fabric distortion. At this time, the ZT50 series polyethylene fiber is heated by the increased infrared heating device through the positioning device, which makes the doubled twisted yarn soft and strong, and the yarn is not easy to break when being drawn simultaneously with the core yarn, and has more holding force.

[0022] The present application further provides an article (such as gloves, sleeves, etc.) prepared from the above anti-cutting composite yarn, which is prepared by the following steps:

[0023] The 20-80D, preferably 20D-70D, spandex yarn is used as the core yarn, and the 25-30 denier aramid fiber and / or 75D-150D polyester fiber and / or 70D-140D nylon fiber is used as the auxiliary yarn. The amount ratio of the spandex yarn to the aramid fiber and / or polyester fiber and / or nylon fiber can be 6-25:42-95, preferably 6-25:42-82. The twisting method is preferably Z twist, and the twist value is 250-450 twists. The spandex elongation is set to 1.5-2.5 times.

[0024] The composite yarn and the auxiliary yarn are knitted into articles such as gloves, sleeves and the like by a knitting machine (for example, a 13G U2 knitting machine).

[0025] In one embodiment, the glove body comprises a finger part, a palm part and a wrist part, the wrist part is provided with an elastic thread, the end of the wrist part away from the hand part is provided with a polyester thread, and the knitted glove has a weight of about 52-65 g / pair.

[0026] In one embodiment, the fabric is preferably a glove or a sleeve, both of which are knitted by the composite yarn and the auxiliary yarn using the 13GU2 knitting method, and the knitted glove has a weight of about 52-65 g / pair, for example, 55±2 g / pair, further for example, 56±2 g / pair, which is 10-15 g / pair lighter than the gloves knitted by the existing anti-cut yarn, and solves the problems of thick and heavy of the anti-cut gloves.

[0027] Further, the gloves knitted by the composite yarn and the auxiliary yarn described above are provided with a dip coating, which can be any one of a butyronitrile coating, a PU coating and a latex coating, and the gloves provided with the dip coating can reach the American standard A8 in terms of the anti-cut level according to the test requirements of ASTM F2992 / F2992M-15, and successfully overcome the risk that the gloves knitted by the existing anti-cut yarn cannot reach the anti-cut level A8 after being provided with a coating.

[0028] Advantages of the present application:

[0029] The articles such as gloves prepared from the composite yarn of the present application can reach the American standard A8 in terms of the anti-cut level according to the test requirements of ASTM F2992 / F2992M-15, and successfully overcome the risk that the gloves knitted by the existing anti-cut yarn cannot reach the anti-cut level A8 after being provided with a coating.

[0030] The gloves knitted by the composite yarn and the auxiliary yarn of the present application, for example, using the 13GU2 knitting method, have a weight of about 52-65 g / pair, which is 10-15 g / pair lighter than the gloves knitted by the existing anti-cut yarn, and solves the problems of thick and heavy of the anti-cut gloves. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Schematic diagram of anti-cut composite yarn processing equipment.

[0032] Figure 2 Diagram showing lower layer spool position and upper layer spool position.

[0033] BRIEF DESCRIPTION OF REFERENCE NUMERALS:

[0034] 1 - positioner; 2 - heating device; 3 - guide roller; 4 - roller; 5 - lower layer spool position (for placing polyester thread); 6 - upper layer spool position (for placing polyester thread); 7 - drafting roller; 8 - thread guide; 9 - friction roller; 10 - paper tube; 11 - high anti-cut ultra-high molecular weight polyethylene yarn; 12 - core thread. DETAILED DESCRIPTION

[0035] The application is further illustrated below in connection with specific examples.

[0036] Figure 1 The structure diagram of the anti-cutting composite yarn processing equipment of one embodiment of the application is shown, which comprises a positioner 1 for fixing the yarn, a heating device 2, a guide wheel 3, a roller 4, a lower layer spool position (for placing polyester filaments) 5, an upper layer spool position (for placing polyester filaments) 6, a drafting roller 7, a guide rod 8, a friction roller 9, a paper tube 10, a high anti-cutting ultra-high molecular weight polyethylene yarn 11, and a core wire 12, wherein the high anti-cutting ultra-high molecular weight polyethylene yarn 11 and the core wire 12 are fixed through the positioner 1 for placing the yarn, the high anti-cutting ultra-high molecular weight polyethylene yarn is pulled through the guide wheel 3, is heated through the heating device 2, and is simultaneously pulled to the roller 4 through the guide wheel 3 after being heated, is pulled again, the yarn tension is controlled, is then wrapped inside through the lower layer spool position 5, is then wrapped outside through the upper layer spool position 6, the yarn coming out of the upper layer spool position is pulled through the drafting roller 7 to form a composite yarn, the composite yarn is guided to the friction roller 9 (supporting the paper tube 10) through the guide rod 8, and the finished product composite yarn is obtained by winding the yarn around the paper tube 10. The heating device 2 comprises an outer box and an infrared heating device installed in the outer box.

[0037] Example 1

[0038] (1) 480D high anti-cutting ultra-high molecular weight polyethylene fiber (ZT50 series produced by Jiangsu Jiujiujiu Technology Co., Ltd., linear density 545 dtex, breaking strength 21.1 cN / dtex, elongation at break 2.9%, modulus 905 cN / dtex) is selected, and the yarn is first subjected to doubling twisting using a doubling twisting machine before being covered, the covering twist is set to Z twist, and the twist value is 110.

[0039] (2) 0.03MM alloy wire (nickel-tungsten alloy wire), 0.04MM tungsten wire, and 75D polyester filament are selected, the polyester filament is set as the outer layer yarn to cover the core wire, and the twist is set to S twist (twist value: 280).

[0040] (3) The infrared heating device is installed on the processing equipment, the doubled twisted yarn is heated through the infrared heating device, the temperature of the heating device is set to about 65℃, the pulling speed is set to 18-22 meters per minute, and the polyester is wrapped outside after being simultaneously fed with the core wire to form a composite yarn, the covering twist is set to upper S twist and lower Z twist, and the twist value is 750. The ZT50 polyethylene fiber, alloy wire, tungsten wire, and polyester in the composite yarn account for 52:7:23:18 in percentage, the polyester used in (2) accounts for about 8, and the polyester used in (3) accounts for about 10.

[0041] (4) Auxiliary yarn uses 70D spandex yarn and 150D polyester yarn combination, spandex yarn and polyester yarn ratio 23:77, polyester is set as outer layer yarn (Z twist) twist 300 twist, spandex is set as core line feeding, spandex elongation is set to 2.0 times, which can enhance the fabric elasticity.

[0042] (5) The composite yarn and auxiliary yarn can be woven into gloves and sleeves by 13G U2 knitting machine. The glove body includes a finger part, a palm part and a wrist part, the wrist part is provided with an elastic rubber thread, and the end of the wrist part away from the hand is provided with a polyester thread. The weight of the knitted glove is about 52-65 grams per pair.

[0043] (6) The glove is coated with PU coating layer, and the cut-resistant level of the fabric after setting the dipping layer can reach A8 according to the test requirements of ASTM F2992 / F2992M-15.

[0044] Example 2

[0045] (1) Select 500D high cut-resistant ultra-high molecular weight polyethylene fiber (ZT50 series purchased from Jiangsu Jiujiuji Technology Co., Ltd.), and use a doubling machine to double the yarn before coating. The coating twist is set to Z twist, and the twist value is 130.

[0046] (2) Select 0.035MM alloy wire (nickel-tungsten alloy wire), 0.035MM tungsten wire and 100D polyester yarn. The polyester yarn is set as the outer layer yarn, and the alloy wire and tungsten wire are simultaneously set as the core line feeding. The core line is coated, and the twist is set to S twist (twist value: 300).

[0047] (3) Install an infrared heating device on the processing equipment. The doubled yarn is placed on the positioner and heated by the infrared heating device. The temperature of the heating device is set to about 70°C, and the pulling speed is set to 18-22 meters per minute. The core line is fed simultaneously, and the polyester yarn is coated into a composite yarn. The coating twist is set to upper S twist and lower Z twist, and the twist value is 750. The ZT50 polyethylene fiber, alloy wire, tungsten wire and polyester in the composite yarn account for 53:9:21:17 in percentage. The polyester used in (2) accounts for 6, and the polyester used in (3) accounts for about 11.

[0048] (4) Auxiliary yarn uses 50D spandex yarn and 100D nylon yarn combination, spandex yarn and nylon yarn ratio 21:79, nylon is set as outer layer yarn (Z twist) twist 300 twist, spandex is set as core line feeding, spandex elongation is set to 2.0 times, which can enhance the fabric elasticity.

[0049] (5) The composite yarn and auxiliary yarn can be woven into gloves and sleeves by 13G U2 knitting machine. The glove body includes finger part, palm part and wrist part, the wrist part is added with rubber thread, the end of the wrist part away from the hand is provided with polyester edge thread, and the weight of the knitted gloves is about 52-65 grams per pair.

[0050] (6) The gloves are applied with PU coating layer, and the cut-resistant level of the fabric after setting the coating layer can reach American standard A8 according to the test requirements of ASTM F2992 / F2992M-15.

[0051] Example 3

[0052] (1) Select 450D high cut-resistant ultra-high molecular weight polyethylene fiber (ZT50 series produced by Jiangsu Jiujiuji Technology Co., Ltd.), and perform doubling on the yarn before coating using a doubling and twisting machine. The coating twist is set to Z twist, and the twist value is 90.

[0053] (2) Select 0.04MM alloy wire (nickel-tungsten alloy wire), 0.04MM tungsten wire and 75D polyester wire, set the polyester wire as the outer layer yarn, and feed the alloy wire and tungsten wire as the core wire at the same time to form the core wire, and set the twist to S twist (twist value: 260).

[0054] (3) Install an infrared heating device on the processing equipment, heat the doubled yarn through the infrared heating device, set the temperature of the heating device at about 60°C, and set the pulling speed at 18-22 meters per minute. The polyester is coated outside after being fed at the same time as the core wire to form a composite yarn, and the coating twist is set to upper S twist and lower Z twist, and the twist value is 700. The ZT50 polyethylene fiber, alloy wire, tungsten wire and polyester in the composite yarn account for 50:11:23:15 in percentage, the polyester used in (2) accounts for 6, and the polyester used in (3) accounts for about 9.

[0055] (4) The auxiliary yarn is composed of 40D spandex wire and 30 denier aramid, and the ratio of spandex wire and aramid is 18:42. The aramid is set as the outer layer yarn (Z twist) with a twist of 250, and the spandex is set as the core wire. The elongation of the spandex is set to 2.0 times to enhance the elasticity of the fabric.

[0056] (5) The composite yarn and auxiliary yarn can be woven into gloves and sleeves by 13G U2 knitting machine. The glove body includes finger part, palm part and wrist part, the wrist part is added with rubber thread, the end of the wrist part away from the hand is provided with polyester edge thread, and the weight of the knitted gloves is about 52-65 grams per pair.

[0057] (6) The gloves are applied with PU coating layer, and the cut-resistant level of the fabric after setting the coating layer can reach American standard A8 according to the test requirements of ASTM F2992 / F2992M-15.

[0058] Comparative Example 1

[0059] The common ethylene fiber was selected as the outer layer yarn, the diameter 0.03MM alloy wire (nickel tungsten alloy wire), 0.04MM tungsten wire, and 75D polyester wire were selected, the polyester wire was set as the outer layer yarn, the alloy wire and the tungsten wire were simultaneously set as the core wire feeding, the covering core twist was set as S twist (twist value: 280), the above yarn was the core wire, the composite yarn 1 was formed by covering, the high cut-resistant ultra-high molecular weight polyethylene fiber was doubled and heated, the above yarn was the core yarn, the composite yarn 2 was formed by covering, the gloves were prepared in the same way as in Example 1, and the gloves could not meet the American standard A8 according to the American standard cut-resistant test ASTM F2992 / F2992M-15. It is proved that the common polyethylene fiber cannot meet the cut-resistant requirement by using the same fineness core yarn as in Example 1.

[0060] Comparative Example 2

[0061] (1) 480D high cut-resistant ultra-high molecular weight polyethylene fiber (ZT50 series purchased from Jiangsu Jiujiuji Technology Co., Ltd.) was selected, the yarn was doubled by using a doubling and twisting machine before covering, the covering twist was set as Z twist, and the twist value was 110.

[0062] (2) The diameter 0.03MM alloy wire (nickel tungsten alloy wire), 0.04MM tungsten wire, and 75D polyester wire were selected, the polyester wire was set as the outer layer yarn to form the core wire, and the twist was set as S twist (twist value: 280).

[0063] (3) The doubled yarn and the core were simultaneously fed, and the polyester was wrapped outside to form a composite yarn, the covering twist was set as upper S twist and lower Z twist, and the twist value was 750. The high cut-resistant ultra-high molecular weight polyethylene fiber, the alloy wire, the tungsten wire, and the polyester accounted for 52:7:23:18 in percentage, the polyester accounted for about 8 in (2), and the polyester accounted for about 10 in (3).

[0064] (4) The auxiliary yarn was composed of 70D spandex wire and 150D polyester wire, the spandex wire and the polyester wire accounted for 23-77, the polyester was set as the outer layer yarn (Z twist) with a twist of 300, the spandex was set as the core wire feeding, and the spandex elongation was set as 2.0 times to enhance the elasticity of the fabric.

[0065] (5) The composite yarn and the auxiliary yarn can be knitted into gloves and sleeves by a 13G U2 knitting machine. The glove body includes a finger part, a palm part, and a wrist part, the wrist part is provided with an elastic rubber thread, the polyester edge thread is arranged at the end of the wrist part away from the hand, and the knitted glove has a weight of about 52-65 grams per pair.

[0066] (6) The glove application dip layer PU coating is set, and the cut resistance of the fabric after setting the dip layer is tested according to ASTM F2992 / F2992M-15, and the cut resistance is better than that of Comparative Example 1, but since Comparative Example 2 does not use infrared heating, the doubled yarn increases the twist, the texture becomes hard, and yarn breakage is prone to occur in the later coating process and is not easy to find, and after the composite yarn is coated, the fabric surface also has a rough phenomenon.

[0067] The above detailed the preferred embodiments of the present application, however, it should be understood that the above description is for the purpose of illustration only and does not constitute any limitation on the scope of the present application. Those of ordinary skill in the art can make substitutions or changes to certain features of the present application without departing from the spirit and scope of the present application, and these substitutions or changes should be considered to fall within the protection scope of the claims of the present application.

Claims

1. A cut-resistant composite yarn, characterized by, It is prepared by the following steps: (1) selecting 200-600D high cut-resistant ultra-high molecular weight polyethylene fiber, and carrying out double twisting to form a first outer wrapping yarn; The high cut-resistant ultra-high molecular weight polyethylene fiber at least has one and / or multiple of the following characteristics: Breaking strength ≥ 16.0 cN / dtex, elongation at break ≤ 4.0%, modulus ≥ 800 cN / dtex; (2) selecting alloy wire with a diameter of 0.01-0.05MM and tungsten wire with a diameter of 0.02-0.05MM as the core wire, and 25-100D polyester wire as the second outer wrapping yarn, and the tungsten wire and the alloy wire are wrapped with polyester to form the core wire of the composite yarn; (3) the first outer wrapping yarn of step (1) and the core wire of step (2) are placed on the positioner at the same time, the first outer wrapping yarn of step (1) is heated on one side with a heating device, and the core wire of step (2) passes through the other side, the first outer wrapping yarn of step (1) and the core wire of step (2) are fed into the outer wrapping polyester wire at the same time, and the composite yarn is formed by wrapping, and the wrapping twist is set to upper S twist and lower Z twist.

2. The cut-resistant composite yarn of claim 1, wherein, selecting 250-500D high cut-resistant ultra-high molecular weight polyethylene fiber, and setting the double twisting twist of the high cut-resistant ultra-high molecular weight polyethylene fiber to Z twist, and the twist value is 60-130; and / or The weight average molecular weight of the high cut-resistant ultra-high molecular weight polyethylene is 1-4 million.

3. The cut-resistant composite yarn of claim 2, wherein, In step (2), the twist of the outer wrapping polyester of the core wire is set to S twist, and the twist value is 200-300; and / or The alloy wire is a nickel-tungsten alloy wire.

4. The cut-resistant composite yarn of claim 3, wherein, In step (3), the twist value of the wrapping twist is 200-800; and / or the proportion of high cut-resistant ultra-high molecular weight polyethylene fiber, alloy wire, tungsten wire and polyester wire is 50-55:7-13:20-26:13-19; the content calculated according to the yarn D number is 1:1-2.5; and / or In step (3), the heating temperature is 45~80℃; and / or The infrared heating device is used for heating.

5. The cut-resistant composite yarn of any of claims 1-4, wherein, The anti-cutting composite yarn processing equipment includes a positioner for fixing the yarn, a heating device, a guide wheel, a roller, a lower layer position, an upper layer position, a drafting roller, a guide rod, a friction roller and a paper tube, wherein the high cut-resistant ultra-high molecular weight polyethylene yarn and the core wire are fixed by the positioner, the high cut-resistant ultra-high molecular weight polyethylene yarn is heated by the heating device under the traction of the guide wheel, the guide wheel pulls the high cut-resistant ultra-high molecular weight polyethylene yarn and the core wire together to the roller, the yarn tension is controlled again, then the polyester wire is wrapped in the lower layer position, and the polyester wire is wrapped outside again in the upper layer position, the yarn coming out of the upper layer position is pulled by the drafting roller to form a composite yarn, and the composite yarn is pulled to the friction roller by the guide rod, and the finished product composite yarn is obtained by winding the yarn on the paper tube.

6. An article prepared from the anti-cutting composite yarn of any one of claims 1-5, the article being prepared by the following steps: The 20-80D spandex yarn is used as the core yarn, the 25-30 English branch and / or 75D-150D polyester yarn and / or 70D-140D nylon yarn is used as the auxiliary yarn, the 20D-80D spandex yarn and the 25-30 English branch and / or 75D-150D polyester yarn and / or 70D-140D nylon yarn are used in a ratio of 6-25:42-95, the twisting mode is Z twist, the twist is 250-450 twists, and the elongation of the spandex is set to 1.5-2.5 times. The anti-cutting composite yarn and the auxiliary yarn are woven into an article by a knitting machine.

7. The article of claim 6, wherein The article is a glove or a sleeve.

8. The article of claim 6, wherein, The article is a glove, and the knitted glove has a weight of 52-65 g / pair.

9. The article of claim 8, wherein, The glove woven by the anti-cutting composite yarn and the auxiliary yarn is provided with a dipping coating, and the coating is any one of a butyronitrile coating, a PU coating and a latex coating.

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