Composite spun yarn, processing method and processing device, and protective equipment

Abstract

A composite spun yarn, a processing method and processing device therefor, and a protective article, the composite spun yarn including a core yarn, a first composite yarn coated parallel to the outer surface of the core yarn, an aqueous adhesive disposed on the surface and inside of the first composite yarn, the aqueous adhesive on the surface of the first composite yarn forming an aqueous adhesive layer, a second composite yarn coated parallel to the outer surface of the aqueous adhesive layer, and a single covering or double covering structure covering the outside of the second composite yarn, the processing device comprising a frame (1) and a plurality of sets of processing devices (2) installed in parallel on the frame (1), each set of processing devices (2) having a first guide and combined mechanism (21) installed on the frame (1), a immersion mechanism (22) installed at the discharge end of the first guide and combined mechanism (21), a drying and cooling mechanism (23) installed in the center of the frame (1), a second guide and combined mechanism (24) installed at the discharge end of the drying and cooling mechanism (23), and a covering mechanism (25) installed at the discharge end of the second guide and combined mechanism (24).

Description

[Technical field]

[0001] <CROSS REFERENCE TO RELATED APPLICATIONS> This application incorporates references to Chinese patent application No. 202010827636.9, filed on August 17, 2020, entitled “Cut-resistant composite spun yarn, spun yarn processing method, and protective equipment,” and Chinese patent application No. 202010827637.3, filed on August 17, 2020, entitled “Composite spun yarn and processing apparatus therefor,” which are incorporated herein by reference.

[0002] The present application relates to the technical field of composite spun yarn processing, and in particular to a composite spun yarn, a processing method and processing device therefor, and a protective article. [Background technology]

[0003] Conventional composite spun yarns are basically realized by blending, covering, plying and covering structures. However, these structures are all spirally entangled by twisting, and it is not possible to realize that the fibers are arranged in parallel, uniform and layers from the core layer to the outer layer. When the composite spun yarn is subjected to a radial or axial force, the reaction of the fibers in each layer and the force received are not consistent, which results in insufficient or limited application of the composite yarn in some products.

[0004] In addition, conventional cut damage protective equipment, such as gloves, protective sleeves, collars, clothes, or shoes with cut prevention functions, often use cut-resistant inorganic or organic long fibers, or single yarns or composite spun yarns as the spinning raw material, and protective equipment with high cut resistance requirements often uses cut-resistant composite spun yarns / raw silk as the spinning raw material. Conventional cut-resistant composite spun yarns / raw silk generally use inorganic non-metallic long fibers, such as glass fiber and basalt fiber, as a core yarn to encase one or more layers of other yarns, or use metal yarns, such as stainless steel fiber and tungsten yarn, as a core yarn to encase one or more layers of other yarns.

[0005] For example, a conventional patent application (CN110172777A) discloses socks with cut-resistant properties and a manufacturing method thereof, but the socks with cut-resistant properties are made by knitting spun yarn, and the spun yarn includes cut-resistant spun yarn, which is mainly made of inorganic fibers such as glass fiber, quartz fiber, or ceramic fiber, or metal yarns such as stainless steel yarn, nickel alloy yarn, titanium alloy yarn, or manganese alloy yarn as a core material, and organic fibers such as aramid fiber, ultra-high molecular weight polyethylene fiber, or PBO fiber are wrapped around the core material, A prior patent application (US20070062173A1) discloses a composite spun yarn for safety clothing, the core yarn material of which can be a cut-resistant core of any cut-resistant material, including but not limited to polyethylene, glass fiber, and metal yarn, surrounding the core includes at least one first covering layer of polyester fiber, and wrapped around the first covering layer is at least one second covering layer of fiber with a low friction coefficient material, the second covering layer having a twist direction opposite to that of the first covering layer.

[0006] The spun yarns of the above-mentioned prior art have a certain cut resistance, and under the same conditions, the cut resistance of the cut-resistant composite spun yarn is better than that of the cut-resistant continuous fiber or single yarn. However, the cut-resistant composite spun yarns using metal yarns or inorganic non-metallic fibers as the heart yarns still have many problems. For example, when inorganic non-metallic fibers are subjected to forces (e.g., bending, pulling, entanglement) during processing and use, the single fibers are easily broken and exposed from the outer covering layer to form burrs that prick the skin and cause skin itching and hypersensitivity. Metal yarns are not suitable for use as a core yarn. After being covered as a yarn, when the composite yarn is bent, the metal yarn is exposed and bent to form sharp corners or broken to form sharp tears, which are likely to scratch the skin, and in addition, since the metal yarn of the conventional cut-resistant composite yarn does not recover its shape (performance) well after being bent, it is likely to form fold marks and peel off the knitted layer and the rubber coating, and when cut, the knife edge presses the spun yarn, and the knife edge directly hits the metal yarn, which easily forms cuts on the surface of the metal yarn and breaks it, greatly reducing its cut resistance. In addition, there is still room for further improvement in the cut resistance of the spun yarn with cut prevention function in the above-mentioned conventional technology. Summary of the Invention [Problem to be solved by the invention]

[0007] In response to the above technical problems, the present application provides a composite spun yarn, a processing method and processing apparatus thereof, which can solve the above technical problems, as well as protective equipment processed with the composite spun yarn, and the composite yarn processing apparatus processes high-performance cut-resistant composite spun yarn while solving the above-mentioned shortcomings of conventional cut-resistant spun yarn. [Means for solving the problem]

[0008] In one aspect, embodiments of the present application provide a cut resistant composite spun yarn, A core yarn located in a core portion of the composite spun yarn; A first composite yarn that is covered in parallel to the outer peripheral surface of the core yarn; an aqueous adhesive disposed on and within the first composite yarn, the aqueous adhesive on the surface of the first composite yarn forming an aqueous adhesive layer; A second composite yarn coated in parallel on the outer peripheral surface of the aqueous adhesive layer; A single covering structure layer or a double covering structure layer that is covered on the outside of the second composite yarn, The first composite yarn and the second composite yarn may both be organic composite yarn or inorganic composite yarn.

[0009] Preferably, the core yarn includes, but is not limited to, a metal filament, an organic filament or an inorganic filament, and preferably, the aqueous adhesive includes, but is not limited to, an aqueous polyurethane emulsion or a polyacrylate emulsion, and the concentration of the aqueous adhesive is 20-50 wt%.

[0010] Preferably, the composite spun yarn has cut resistance, the core yarn is a metal filament located at the core of the composite spun yarn, the first composite yarn is an inorganic fiber composite yarn that is coated in parallel on the outer surface of the metal filament, the second composite yarn is a high-toughness, low-elasticity organic composite yarn, and the linear density of the composite spun yarn is 33.3 tex to 72.2 tex.

[0011] Preferably, the metal filament includes, but is not limited to, a stainless steel filament, a tungsten filament, or a nickel filament, the metal filament having a fineness of 10 to 60 μm, the inorganic fiber composite yarn is selected from a glass fiber composite yarn or a basalt fiber composite yarn, the inorganic fiber composite yarn having a fineness of 0 to 200 D, and the high tenacity low elasticity organic composite yarn is any one selected from ultra-high molecular weight polyethylene, high tenacity low elasticity polyester, aramid 1414, or high tenacity vinylon, the high tenacity low elasticity organic composite yarn having a fineness of 150 to 400 D.

[0012] Preferably, the single covering structure layer includes a short fiber spun yarn covering structure layer or a long fiber covering structure layer, and the double covering structure layer is a covering structure of short fiber spun yarn and short fiber spun yarn, a covering structure of long fiber and long fiber, or a covering structure of short fiber spun yarn and long fiber, and the twist directions of the covering spun yarns of the two layers of the double covering structure layer are opposite to each other, and preferably, the short fiber spun yarn of the short fiber spun yarn covering structure layer is cotton, linen, wool. The filaments of the filament covering structure layer are nylon filaments and / or polyester filaments, the staple spun yarn has a fineness of 32-80 British count, a twist factor of 260-420, and a covering twist of 400-800 turns / meter, and the filaments have a fineness of 30-100D, and a covering twist of 400-800 turns / meter.

[0013] In another aspect of the present application, there is further provided a method for processing a composite spun yarn, the method comprising the steps of: (1) covering an inorganic fiber composite yarn with a metal filament in parallel, controlling the tension of the metal filament and the inorganic fiber composite yarn, respectively, drawing the metal filament and the inorganic fiber composite yarn into a guide groove of a first godet roller, allowing the inorganic fiber composite yarn to be spread in the guide groove of the first godet roller by the action of tension, the metal filament being located at a central position on the inorganic fiber composite yarn after being spread, the metal filament being located at a core after being guided by the first godet roller, and forming a first covering tow in which the inorganic fiber composite yarn is covered in parallel on the outer peripheral surface of the metal filament; Step (2) of performing a dipping treatment, supplying the first covering tow to a dipping pool containing an aqueous adhesive, performing a dipping treatment, and then performing adhesive spray coating or adhesive knife coating on the first covering tow after the dipping treatment, the concentration of the aqueous adhesive is 20 to 50 wt%, and the dipping treatment time is 0.5 to 5 s; (3) drying and cooling, and feeding the first covered tow after the adhesive spray coating or adhesive knife coating into an oven at a temperature of 80 to 120°C, the treatment time is 3 to 6 seconds, and then rapidly cooling it with a cold air nozzle to obtain a composite single fiber, and the cooling temperature is 5 to 20°C; (4) covering the high-toughness, low-elasticity organic composite yarn with the composite filament after drying and cooling, controlling the tensions of the high-toughness, low-elasticity organic composite yarn and the composite filament after drying and cooling, respectively, and drawing the high-toughness, low-elasticity organic composite yarn and the composite filament after drying and cooling into a guide groove of a second godet roller to allow the high-toughness, low-elasticity organic composite yarn to be spread in the guide groove of the second godet roller by the action of tension, forming a second covering tow in which the composite filament after drying and cooling is located at a central position on the spread high-toughness, low-elasticity organic composite yarn, and the composite filament after drying and cooling is located at a core portion after being guided by the second godet roller, and the high-toughness, low-elasticity organic composite yarn is covered in parallel to the composite filament after drying and cooling; and (5) performing single covering or double covering, and performing single covering or double covering on the outside of the second covering tow by a covering mechanism to obtain the cut-resistant composite spun yarn, the single covering being covered using staple spun yarn or filament, the double covering structure layer being a covering structure of staple spun yarn and staple spun yarn, a covering structure of filament and filament, or a covering structure of staple spun yarn and filament, and the twist directions of the two layers of covering spun yarns of the double covering structure layer are opposite.

[0014] Preferably, the tension of the metal filaments is controlled to 7 to 12 cN, the tension of the inorganic fiber composite yarn is controlled to 4 to 6 cN, the tension of the composite filaments after drying and cooling is controlled to 7 to 12 cN, and the tension of the high toughness, low elasticity organic composite yarn is controlled to 4 to 6 cN.

[0015] In another aspect of the present application, there is further provided an apparatus for processing composite spun yarn, the apparatus comprising: The system comprises a frame and a plurality of sets of processing devices arranged in parallel on the frame, each set of the processing devices comprising a first guide and combination mechanism arranged at one end of the frame, a immersion mechanism arranged below the discharge end of the first guide and combination mechanism, a drying and cooling mechanism arranged in the center of the frame and located downstream of the immersion mechanism, a second guide and combination mechanism arranged at the discharge end of the drying and cooling mechanism, and a covering mechanism arranged at the discharge end of the second guide and combination mechanism.

[0016] Preferably, the first guide compound mechanism includes a first supply roller unit connected to the frame, a first main godet roller unit installed inside the first supply roller unit, and a first auxiliary godet roller unit installed at the material inlet end of the first main godet roller unit.

[0017] Preferably, the first supply roller unit includes a first mounting bracket, a first rewind shaft mounted on the first mounting bracket, and damping bearings mounted on both ends of the first rewind shaft.

[0018] Preferably, the first main godet roller unit includes a first vertical screw connected to the frame, a first L-shaped holder connected to the top of the first vertical screw, a first horizontal screw connected to the first L-shaped holder, and a first V-shaped godet roller installed on the first horizontal screw, preferably, the central portion of the first V-shaped godet roller presents an arc groove, and preferably, the structure of the second guide composite mechanism is the same as that of the first main godet roller unit.

[0019] Preferably, the immersion mechanism comprises an immersion pool, a third vertical screw connected to the frame, a third L-shaped holder connected to the bottom of the third vertical screw, a third horizontal screw connected to the third L-shaped holder, and a third godet roller installed on the third horizontal screw, the bottom of which is located within the immersion pool.

[0020] Preferably, the drying and cooling mechanism includes an oven, a material supply inlet installed at one end of the oven and a material discharge outlet at the other end, a plurality of drying infrared lamp tubes installed in the oven, a third material supply guide pulley installed outside the material supply inlet, a third material discharge guide pulley installed outside the material discharge outlet, and a cooling passage installed between the material discharge outlet and the third material discharge guide pulley, and the second godet roller unit is located at the outlet of the cooling passage.

[0021] Preferably, the covering mechanism includes a fourth godet roller installed at an outlet of the second guide compound mechanism, and a covering machine installed at an outlet of the fourth godet roller.

[0022] In another aspect of the present application, there is further provided a protective article, the protective article comprising: The composite spun yarn processed in the present application is fed in parallel with spandex and / or nylon filaments, and knitted into a knit having cut-resistant properties by a needle loom; or The composite spun yarn is directly woven into a fabric having cut-resistant performance by a weaving machine, and the cut-resistant performance of the knitted or woven fabric is tested according to the EN388 standard, and the cut-resistant level thereof can reach level D or above. Preferably, the protective equipment includes, but is not limited to, gloves, protective sleeves, collars, clothes or shoes having cut-resistant function. Effect of the Invention

[0023] The beneficial technical effects of the present application are as follows: As can be understood from the above technical solutions of the embodiments of the present application, the composite spun yarn of the present application uses a covering structure layer as a surface layer, the outer layer is a second composite yarn layer, the further outer layer is a first composite yarn layer, and the core layer is a core yarn. The composite spun yarn of the present application can achieve a parallel and uniform covering of the first composite yarn layer on the outside of the core yarn, and can be subjected to an adhesive immersion treatment to become a composite monofilament, and the second composite yarn can be parallel and uniformly covered on the outside of the composite monofilament. Finally, a covering structure is used on the outside of the second composite yarn, and the core yarn, first composite yarn and second composite yarn of the present application can be selected according to the performance requirements of the product. The composite yarn has a uniform structure and can achieve a uniform and parallel covering of each layer (excluding the outer covering) on ​​the surface of its inner fiber layer, which improves the structural stability of the composite spun yarn and improves the fiber reaction speed and dispersion effect in the structure of each layer during the force-receiving process.

[0024] In addition, the core yarn in the above-mentioned composite spun yarn of the present application may be selected as a metal filament, which is located at the core of the composite spun yarn, the first composite yarn is made of an inorganic fiber composite yarn which is parallel to the outer surface of the metal filament, and the second composite yarn is made of a high-toughness, low-elasticity organic composite yarn which is used to process a cut-resistant composite spun yarn, which has significantly improved cut resistance compared to conventional yarns with cut prevention function, and the knitted or woven fabrics made of the composite yarn are tested according to the EN388 standard, and the cut resistance level can reach level D or above.

[0025] The processing method for the cut-resistant composite spun yarn of the present application includes firstly compounding a metal filament with an inorganic fiber composite yarn, expanding the inorganic fiber composite yarn under tension conditions by the guide groove of a godet roller to coat the surface of the metal filament in parallel, and disposing an adhesive solution of an aqueous adhesive on the surface and inside of the inorganic fiber composite yarn through an adhesive immersion process to form a composite filament, and then expanding the organic composite yarn in the same manner to coat the outer circumference of the composite filament in parallel, and finally forming a composite yarn with cut prevention function through a covering process, in which the composite yarn is expanded by utilizing the different properties of the composite yarn and the filament to realize parallel coating on the surface of the filament, and the adhesive immersion process Therefore, the inorganic composite yarn and the metal filament are composited to form a composite filament, and the organic composite yarn spread out over the composite filament is covered in parallel, and finally, ordinary single covering or double covering is performed to obtain a composite yarn with a density gradient and anti-cutting function. This method is simple and easy to mass-produce, and the product design has a reasonable structure. The surface layer of the composite yarn is a covering structure layer, the outer layer is an organic fiber composite yarn layer, the further outer layer is an inorganic fiber composite yarn layer after immersed in adhesive, and the core layer is a composite spun yarn of a metal filament. The volume density of the material in this composite spun yarn tends to increase gradually from the outside to the inside, and it has excellent cut resistance.

[0026] In addition, the composite spun yarn processing device of the present application can process the composite spun yarn simultaneously or separately using a plurality of processing devices, the first guide and compounding mechanism covers the first composite yarn with a core yarn to form a first covering tow 311, the immersion mechanism supplies the first covering tow 311 to an immersion pool containing an aqueous adhesive to perform an immersion process, the drying and cooling mechanism dries and cools the first covering tow after immersion, and the second guide and compounding mechanism supplies the first covering tow 31 after drying and cooling to the first covering tow 31. The first covering mechanism wraps the second composite yarn around the second covering tow 321 to obtain a composite spun yarn, and the second covering tow 321 is covered by the covering mechanism to obtain a composite spun yarn, thereby realizing the supply of core yarn and the supply of first composite yarn in the composite spun yarn, the first parallel covering, soaking, drying and cooling, the supply of second composite yarn, the second parallel covering and wrapping, and obtaining a composite spun yarn product. This processing apparatus is widely used and can be used in the production and processing of the above-mentioned cut-resistant composite spun yarn, and can realize mass production of the composite yarn.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a schematic diagram of a composite spun yarn processing device according to an embodiment of the present application. [Diagram 2] FIG. 2 is a partial enlarged view of a portion A in FIG. [Diagram 3] FIG. 3 is a partial enlarged view of the portion B in FIG. [Figure 4] FIG. 4 is a partial enlarged view of a portion C in FIG. [Diagram 5] FIG. 5 is a schematic view of the composite spun yarn processing device according to the embodiment of the present application viewed from another direction. [Figure 6] FIG. 6 is a schematic diagram of a first V-shaped godet roller of a composite spun yarn processing device according to an embodiment of the present application. [Figure 7] FIG. 7 is a schematic diagram of a first V-shaped godet roller of another embodiment of the composite spun yarn processing apparatus according to the embodiment of the present application. [Figure 8] FIG. 8 is a schematic diagram showing the principle of a composite spun yarn processing device according to an embodiment of the present application. [Figure 9] FIG. 9 is a graph showing the effect of a bending resistance test of the lining of a glove having a cut prevention function processed by the process of one embodiment and the comparative example of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the drawings. When the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application as set forth in the appended claims.

[0030] The terms used in this application are merely for the purpose of describing particular embodiments and are not intended to limit the present application. Unless otherwise clearly indicated by the context below, the singular forms "a," "said," and "the" used in this application and the appended claims are intended to include the plural forms as well. It will be further understood that the term "and / or" as used herein refers to any and all possible combinations including one or more of the associated listed items.

[0031] As will be understood, in the description of this application, the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are those orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of this application, and do not indicate or imply that the devices or elements referred to necessarily have a particular orientation or must be constructed and operated in a particular orientation, and therefore should not be understood as limiting this application.

[0032] Moreover, the terms "first" and "second" are merely for descriptive purposes and should not be understood to indicate or imply a relative importance or to imply a number of the technical features being indicated. Thus, a feature qualified with "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of this application, unless otherwise clearly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0033] In the present application, unless otherwise clearly defined and limited, the terms "attached", "connected", "coupled", "fixed" and the like should be understood in a broad sense, for example, unless otherwise clearly defined, they may be fixedly connected, detachably connected, or integral, may be mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate element, internally communicated between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0034] In one embodiment, the present application provides a composite spun yarn, the composite spun yarn includes a core yarn located at the core of the composite yarn, the core yarn may be a metal filament, for example, a stainless steel filament, a tungsten filament, or a nickel filament, but is not limited thereto, for example, a nickel alloy filament, a titanium alloy filament, a manganese alloy filament, or a tungsten alloy filament, etc., may be used, and the fineness of the metal filament is generally selected in the range of 10 to 60 μm, for example, the stainless steel filament may be selected from 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, or 60 μm, and the nickel filament may be selected from 20 μm, 30 μm, or 40 μm. For example, the tungsten yarn may be selected from different specifications of 10 μm, 20 μm, 22 μm, 25 μm, 30 μm, 35 μm, or 40 μm. The specific type and fineness of the core yarn may be selected based on the application, specification needs, and processability of the composite spun yarn product. Alternatively, the core yarn may be made of relatively fine polyester, nylon, ultra-high molecular weight polyethylene (UHMWPE), high tenacity low elasticity polyester, aramid 1414, high tenacity vinylon, or other organic fiber monofilament or composite yarn with special properties, or inorganic long fiber, such as glass fiber long fiber or basalt fiber long fiber, may be used.

[0035] The composite spun yarn further includes a first composite yarn and a second composite yarn, the first composite yarn being parallel and uniformly coated on the outer surface of the core yarn, and the second composite yarn being parallel and uniformly coated on the outer surface of the aqueous adhesive layer, both of which may be conventional organic composite yarns or inorganic composite yarns or functional composite yarns, such as flame retardant or highly cut-resistant composite yarns, for example, aramid 1313, ultra-high molecular weight polyethylene (UHMWPE), high tenacity low elasticity polyester, aramid 1414, high tenacity vinylon, glass fiber or basalt fiber, and the specific selection of the composite yarns and their fineness may be considered according to the application, specification needs and processability of the composite spun yarn product.

[0036] The composite spun yarn further includes an aqueous adhesive, which is immersed in an immersion pool and coated in parallel on the surface and inside of the first composite yarn of the core yarn, so that the aqueous adhesive on the outer surface of the first composite yarn forms an aqueous adhesive layer on the surface of the composite yarn. The water-soluble adhesive is selected from environmentally friendly water-soluble adhesives, for example, water-soluble polyurethane emulsion or polyacrylate emulsion, and the concentration of the aqueous adhesive is selected in the range of 20 to 50 wt%, for example, 20 wt%, 30 wt%, 40 wt%, or 50 wt%, etc.

[0037] The outermost layer of the composite spun yarn is covered with a single covering structure layer or a double covering structure layer to cover the outer side of the high toughness, low elasticity organic composite yarn, and the single covering or double covering layer is realized by a conventional covering mechanism, and the single covering structure layer can be a staple spun yarn covering layer or a long fiber covering structure layer, and the double covering structure layer can be a covering structure of staple spun yarn and staple spun yarn, a covering structure of long fiber and long fiber, or a covering structure of staple spun yarn and long fiber, and the twist directions of the two layers of covering spun yarn in the double covering structure layer are opposite, and the staple spun yarn in the staple spun yarn covering structure layer can be one pure spun yarn or any two or more blended yarns selected from cotton, linen, wool, polyester, nylon and acrylic fiber, and the long fiber in the long fiber covering structure layer can be nylon long fiber and / or polyester long fiber, etc.

[0038] In some other embodiments, the present application provides a composite yarn having cut resistance, the composite spun yarn comprising a metal filament located at the core of the composite yarn, the metal filament may be, but is not limited to, a stainless steel yarn, a tungsten yarn or a nickel yarn, for example, a nickel alloy yarn, a titanium alloy yarn, a manganese alloy yarn or a tungsten alloy yarn, etc., the fineness of the metal filament is generally selected in the range of 10 to 60 μm, for example, the stainless steel yarn may be selected as 30 μm, 35 μm, 40 μm, 45 μm, 50 μm or 60 μm, the nickel yarn may be selected as 20 μm, 30 μm or 40 μm, the tungsten yarn may be selected as 10 μm, 20 μm, 22 μm, 25 μm, 30 μm, 35 μm or 40 μm, the specific selection of the core yarn may be determined according to the fineness and cut resistance requirements of the composite yarn product having cut prevention function.

[0039] The composite spun yarn further includes an inorganic fiber composite yarn, which can be spread and then coated in parallel on the outer surface of the metal filament. The commonly used inorganic fiber composite yarn may be a representative glass fiber composite yarn or a basalt fiber composite yarn. However, as can be understood by those skilled in the art, other inorganic fibers that meet the performance requirements of composite yarn products having anti-cutting function, such as asbestos fiber, ceramic fiber, etc., may also be selected. The fineness of the inorganic fiber composite yarn should be controlled within the range of 50 to 200D, and may be, for example, 50D, 100D, 150D, 200D, etc.

[0040] The composite spun yarn further includes an aqueous adhesive, which is immersed in an immersion pool to coat the surface and interior of the inorganic fiber composite yarn of the metal filament in parallel, and the aqueous adhesive on the outer surface of the inorganic fiber composite yarn forms an aqueous adhesive layer on the surface of the composite yarn. The water-soluble adhesive is selected from environmentally friendly water-soluble adhesives, such as water-soluble polyurethane emulsion or polyacrylate emulsion, and the concentration of the aqueous adhesive is selected in the range of 20 to 50 wt%, for example, 20 wt%, 30 wt%, 40 wt%, or 50 wt%, which can all achieve the effects of the present application.

[0041] The composite spun yarn further includes a high tenacity low elasticity organic composite yarn, which can be spread and then coated in parallel on the outer peripheral surface of the aqueous adhesive layer outside the inorganic fiber composite yarn. The high tenacity low elasticity organic composite yarn can be selected from ultra-high molecular weight polyethylene (UHMWPE), high tenacity low elasticity polyester, aramid 1414, and high tenacity vinylon. According to the needs of the product, the fineness of the high tenacity low elasticity organic composite yarn can be selected after considering the complete coverage. The linear density of the cut-resistant composite spun yarn produced in the present application is 33.3 tex to 72.2 tex. For example, the densities of the cut-resistant composite spun yarns finally obtained in specific Examples 1 to 6 of the present application are 47.5 tex, 51.5 tex, 66.2 tex, 43.3 tex, 72.2 tex and 64.7 tex, respectively.

[0042] The outermost layer of the composite spun yarn is a single covering structure layer or a double covering structure layer to cover the outside of the high toughness, low elasticity organic composite yarn, and the single covering or double covering layer is realized by a conventional covering mechanism, and the single covering structure layer may be a staple spun yarn covering layer or a long fiber covering structure layer, and the double covering structure layer is a covering structure of staple spun yarn and staple spun yarn, a covering structure of long fiber and long fiber, or a covering structure of staple spun yarn and long fiber, and the two layers of the double covering structure layer the twist direction of the covering spun yarn is opposite, the staple spun yarn of the staple spun yarn covering structure layer may be a pure yarn selected from cotton, linen, wool, polyester, nylon and acrylic fiber or a blended yarn of any two or more thereof, the filament of the filament covering structure layer is nylon filament and / or polyester filament, the staple spun yarn has a fineness of 32-80 British count, a twist coefficient of 260-420 and a covering twist of 400-800 turns / meter, and the filament has a fineness of 30-100D and a covering twist of 400-800 turns / meter.

[0043] Based on the above-mentioned composite yarn with cut-resistant performance, the present application further provides a protective article, which is produced with the above-mentioned cut-resistant composite spun yarn of the present application, and the protective article may be knitted or woven. In processing the knitted protective article, the composite spun yarn of the present application and spandex and / or nylon filament are supplied in parallel and knitted on a needle loom. As for the type of needle loom, a 7G / 10G / 13G / 15G / 18G needle loom may be used for knitting. Since the composite spun yarn of the present application does not have elasticity by itself, when knitting on a needle loom, it is supplied in parallel with spandex and / or nylon filament, which solves the problem of difficulty in knitting due to lack of elasticity.

[0044] In processing protective equipment using textiles, the composite spun yarn of the present application can be directly woven into a textile fabric having cut-resistant performance by a weaving machine, and the cut-resistant performance of the knitted or woven fabric of the present application can reach level D or above when tested according to the EN388 standard. The cut-resistant protective equipment of the present application includes, but is not limited to, gloves, protective sleeves, collars, clothes or shoes having cut-resistant functions.

[0045] In another embodiment of the present application, there is provided a processing device for the composite spun yarn. As shown in Fig. 1 to Fig. 8, the processing device for the composite spun yarn according to the embodiment of the present application includes a frame 1 and a plurality of processing devices 2 arranged in parallel on the frame 1, and each processing device 2 includes a first guiding and combining mechanism 21 arranged at one end of the frame 1, a dipping mechanism 22 arranged below the discharge end of the first guiding and combining mechanism 21, a drying and cooling mechanism 23 arranged in the center of the frame 1 and located downstream of the dipping mechanism, a second guiding and combining mechanism 24 arranged at the discharge end of the drying and cooling mechanism 23, and a covering mechanism 25 arranged at the discharge end of the second guiding and combining mechanism 24. The multiple sets of processing devices 2 can process the composite spun yarn simultaneously or separately. Specifically, the first guide and composite mechanism 21 covers the first composite yarn with a core yarn in parallel to form a first covering tow 311, the immersion mechanism 22 supplies the first covering tow 311 to an immersion pool containing an aqueous adhesive and performs an immersion process to obtain a composite monofilament 312, the drying and cooling mechanism 23 performs a drying and cooling process on the first covering yarn after immersion, the second guide and composite mechanism 24 wraps the second composite yarn around the composite monofilament 312 after drying and cooling to obtain a second covering tow 321, and the second covering tow 321 is covered by the covering mechanism 25 to obtain a composite spun yarn.

[0046] The first guide composite mechanism 21 comprises a first supply roller unit 211 connected to the frame 1, a first main godet roller unit 212 installed inside the first supply roller unit 211, and a first auxiliary godet roller unit 213 installed at the material inlet end of the first main godet roller unit 212. The first main godet roller unit 212 includes a first vertical screw 2121 connected to the frame 1, a first L-shaped holder 2122 connected to the top of the first vertical screw 2121, a first horizontal screw 2123 connected to the first L-shaped holder 2122, and a first V-shaped godet roller 2124 installed on the first horizontal screw 2123. The guide groove of the first V-shaped godet roller 2124 is an arc groove 2124a. The bottom arc groove 2124a of the V-shaped godet roller guide groove provides a space for expanding the first composite yarn and allows the composite yarn to spread along the arc surface, which further contributes to placing the core yarn at the center position on the spread composite yarn, and is fitted into the first composite tow by the tension of the core yarn to realize the composite yarn to be wrapped parallel to the outer periphery of the outer surface of the monofilament. The structure of the first auxiliary godet roller unit 213 is the same as that of the first main godet roller unit 212, with the only difference being that the height of the first auxiliary godet roller unit 213 is lower than that of the first main godet roller unit 212, and the V-shaped godet roller of the first auxiliary godet roller unit can mainly spread the first composite yarn, and has a positioning effect on the parallel rewinding of the core yarn, so that the core yarn is positioned at the central position of the spread composite yarn when the guide groove of the first V-shaped godet roller 2124 is the arc groove 2124a.The first supply roller unit 211 is for supplying the metal core yarn, and the first main godet roller unit 212 draws the first composite yarn in the first composite yarn tube 31 into the first auxiliary godet roller unit 213 to basically expand it, and then feeds it into the first V-shaped godet roller 2124 of the first main godet roller unit 212. The arc-shaped groove 2124a at the bottom of the first V-shaped godet roller 2124 can allow the core yarn and the first composite yarn to be spread into the arc-shaped groove 2124a under the action of tension, and the core yarn is located at the center position on the first composite yarn after the spread, so that the first composite yarn is covered on the outer surface of the core yarn to obtain a first covering tow 311.

[0047] Before the first auxiliary godet roller unit 213, a first tension adjusting device (not shown) for controlling the tension of the first composite yarn is installed in the supply path after the first composite yarn is unwound from the first composite yarn tube 31, so that the tension can be appropriate and the first composite yarn can be uniformly expanded after passing through the first auxiliary godet roller unit 213 and the first main godet roller unit 212.

[0048] In addition, the heights of the first L-shaped holder 2122 and the first V-shaped godet roller 2124 can be adjusted by adjusting the first vertical screw 2121, and the horizontal position of the first V-shaped godet roller 2124 can be adjusted by the first horizontal screw 2123 to ensure that the core yarn is located at the center of the first composite yarn that is fed and then spread. In another preferred embodiment of the present application, the bottom of the first V-shaped godet roller 2124 may further have a trapezoidal groove shape, and the bottom of the first V-shaped godet roller 2124 may be flat, thereby ensuring that the first composite yarn is spread by the action of tension.

[0049] The first supply roller unit 211 includes a first mounting bracket 2111, a first rewinding shaft 2112 installed on the first mounting bracket 2111, and damping bearings 2113 installed on both ends of the first rewinding shaft 2112, and the tension of the core yarn can be controlled and adjusted by the damping bearings. When a core yarn winding of the core yarn is fixed to the first rewinding shaft 2112 and the core yarn is subjected to a traction force, the damping bearings 2113 rotate to rewind the core yarn in parallel.

[0050] The second guide composite mechanism 24 includes a second godet roller unit 241 connected to the frame 1. A second tension adjusting device (not shown) for controlling the tension of the second composite yarn is installed in the supply path after the second composite yarn is unwound from the second composite yarn tube 32, before the second godet roller unit 214. Specifically, the structure of the second godet roller unit 241 is the same as that of the first main godet roller unit 212. The second godet roller unit 241 includes a second vertical screw 2411 connected to the frame 1 and a second L-shaped holder 24 connected to the top of the second vertical screw 2411. 12, a second horizontal screw 2413 connected to the second L-shaped holder 2412, and a second V-shaped godet roller 2414 installed on the second horizontal screw 2413, the guide groove of the second V-shaped godet roller 2414 is an arc groove, which provides a space for expanding the high toughness low elasticity organic composite yarn and allows the composite yarn to spread along the arc surface, and further contributes to locating the composite monofilament 312 at the center position on the spread composite yarn, and is fitted into the second composite yarn by the tension of the composite monofilament, so as to cover the composite tow in parallel with the outer peripheral surface of the outer surface of the composite monofilament to obtain a second covering tow 321.

[0051] The immersion mechanism 22 includes an immersion pool 221, a third vertical screw 222 connected to the frame 1, a third L-shaped holder 223 connected to the bottom of the third vertical screw 222, a third horizontal screw 224 connected to the third L-shaped holder 223, and a third godet roller 225 installed on the third horizontal screw 224, and the bottom of the third godet roller 225 is located in the immersion pool 221, and the number of the third godet rollers 225 is one or more, and all of them may be located in the immersion pool 221, or one of them is located in the immersion pool 221, ensuring that the first covering tow 311 is completely immersed. In a preferred embodiment of the present application, the structure of the third godet roller 225 may be similar to that of the first main godet roller unit 212, making it easy to adjust the height and horizontal position of the third godet roller 225, and the third godet roller 225 may be a flat roller, or its central part may have a V-shaped groove or a trapezoidal groove, to ensure that the first covering tow 311 is not displaced when it is re-immersed.

[0052] The drying and cooling mechanism 23 includes an oven 231, a material supply port 235 installed at one end of the oven 231 and a material discharge port 236 at the other end, a plurality of drying lamp tubes 232 installed within the oven 231, a third material supply guide pulley 233 installed outside the material supply port 235, a third material discharge guide pulley 237 installed outside the material discharge port 236, and a cooling passage 234 (not shown in FIG. 1) installed between the material discharge port 236 and the third material discharge guide pulley 237, and the second godet roller unit 241 is located at the outlet of the cooling passage 234, and it is preferable that the drying lamp tube 232 uses a drying infrared lamp tube. The number of the material supply inlets 235 and the material discharge outlets 236 is the same as the number of the processing devices 2, and corresponds to each other one-to-one; the material supply inlet 235 has the same height as the third material discharge guide pulley 237 outside the material discharge outlet 236, ensuring that the first covering tow 311 is kept horizontal in the oven 231, and the axial distance from the first covering tow 311 to the drying lamp tube 232 is constant, allowing for uniform drying; the third material supply guide pulley 233 is preferably a flat roller, which can prevent the immersion adhesive solution from collecting on the third material supply guide pulley 233; and the third material discharge guide pulley 237 can be a general V-shaped guide pulley, which can ensure that the first covering tow 311 is accurately positioned during the guiding process to prevent misalignment.

[0053] A cover plate that can be easily opened and closed is installed on the top of the oven 231, and a temperature controller may be installed inside the cover plate to ensure that the temperature inside the oven 231 is within a predetermined temperature range and ensure drying without damaging the first covering tow 311. It is preferable that the cooling passage 234 is cooled by blowing air. After the first covering tow 311 is cooled after drying, the second composite yarn is covered.

[0054] The covering mechanism 25 includes a fourth godet roller 251 installed at the outlet of the second guide compound mechanism 24, and a covering machine 252 installed at the outlet of the fourth godet roller 251. The covering machine 252 is a conventional covering machine, and is used to perform single covering or double covering on the second covering tow 321 to obtain the composite spun yarn.

[0055] The number of the covering machine 252 is one or more. When the number of the covering machine 252 is one, single covering is performed, and covering is performed with staple spun yarn or filament; when the number of the covering machine 252 is two, double covering is performed, and the double covering structure layer can be a covering structure of staple spun yarn and staple spun yarn, a covering structure of filament and filament, or a covering structure of staple spun yarn and filament, and the twisting directions of the two layers of covering spun yarn in the double covering structure layer are opposite to each other.

[0056] In the present application, the composite spun yarn can be processed simultaneously or separately by a plurality of processing devices 2, the first guide and compounding mechanism 21 coats the first composite yarn with a core yarn to form a first covering tow 311, the immersion mechanism 22 supplies the first covering tow 311 to an immersion pool containing an aqueous adhesive for immersion treatment, the drying and cooling mechanism 23 performs a drying and cooling treatment on the first covering yarn after immersion, the second guide and compounding mechanism 24 wraps the second composite yarn around the first covering tow 311 after drying and cooling to obtain a second covering tow 321, and the second covering tow 321 is covered by the covering mechanism 25 to obtain a composite spun yarn, and the supply of the core yarn and the supply of the first composite yarn, the first parallel covering, immersion, drying and cooling, the automatic supply of the second composite yarn, the second parallel covering and wrapping in the composite spun yarn are realized to obtain a composite spun yarn product.

[0057] Hereinafter, the present application provides a method for processing cut-resistant composite yarn by the above-mentioned processing device of the present application, in which the cut-resistant composite yarn is made of a metal monofilament as a core yarn, an inorganic fiber composite yarn as a first composite yarn, a high-toughness, low-elasticity organic composite yarn as a second composite yarn, and an aqueous polyurethane emulsion as an aqueous adhesive. The process of processing the cut-resistant composite yarn is as follows:

[0058] Step 1: The inorganic fiber composite yarn is coated with metal filaments in parallel, and the tension of the metal filaments and the inorganic fiber composite yarn is controlled respectively. The metal filaments and the inorganic fiber composite yarn are drawn into the first guide and composite mechanism 21. The metal filaments are first fed from the first feed roller unit 211, and the inorganic fiber composite yarn is drawn from the first auxiliary godet roller unit 213 and passes through the first V-shaped godet roller of the first auxiliary godet roller unit 213 and the first V-shaped godet roller 2124 of the first main godet roller unit 212 together with the metal filaments in sequence. The inorganic fiber composite yarn is basically spread out in the arc-shaped part of the V-shaped godet roller of the first auxiliary godet roller unit. The first V-shaped godet roller has a positioning effect on the parallel unwinding of the core yarn. The first V-shaped godet roller 2124 of the first main godet roller unit 212 is designed to rotate in the direction of the axis ... The inner groove allows the inorganic fiber composite yarn to be uniformly spread, and the metal filaments are located at the center of the inorganic fiber composite yarn after it has been spread. After being guided by the first main godet roller unit 212, the metal filaments are located at the core, and the inorganic fiber composite yarn is parallel to and covers the outer peripheral surface of the metal filaments to form a first covering tow. The core yarn winding of the metal filaments is fixed to the rewinding shaft, and a damping bearing is provided on the rewinding shaft. During the rewinding process, the tension of the metal filaments can be controlled and adjusted by adjusting the damping bearing. When the metal filaments are subjected to a traction force, the damping bearing is rotated to rewind the metal filaments in parallel with a certain tension, and the tension of the metal filaments is selectively controlled to 7-12 cN. In the supply path of the inorganic fiber composite yarn, the supply tension of the inorganic fiber is selectively controlled to 4-6 cN.

[0059] The metal filaments may be selected from stainless steel yarn, tungsten yarn, or nickel yarn, but are not limited thereto. For example, nickel alloy yarn, titanium alloy yarn, manganese alloy yarn, or tungsten alloy yarn may be used. The fineness of the metal filaments is generally selected in the range of 10 to 60 μm. For example, the stainless steel yarn may be selected from 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, or 60 μm. The nickel yarn may be selected from 20 μm, 30 μm, or 40 μm. The tungsten yarn may be selected from different specifications of 10 μm, 20 μm, 22 μm, 25 μm, 30 μm, 35 μm, or 40 μm. The specific selection of the core yarn may be determined according to the fineness and cut resistance requirements of the composite yarn product having a cut-resistant function. The inorganic fiber composite yarn may be selected from typical glass fiber composite yarn and basalt fiber composite yarn, but as can be understood by those skilled in the art, other inorganic fibers that meet the performance requirements of composite yarn products having cut-resistant function, such as asbestos fiber and ceramic fiber, can also be selected. The fineness of the inorganic fiber composite yarn needs to be controlled within the range of 50 to 200D, and for example, 50D, 100D, 150D, 200D, etc. may be selected.

[0060] Step 2: immersion treatment is performed. The first covering tow is supplied to the immersion pool 221 containing the water-based adhesive for immersion treatment, and then the first covering tow 311 after immersion treatment is subjected to adhesive spray coating or adhesive knife coating treatment. The water-soluble adhesive is selected from environmentally friendly water-soluble adhesives, for example, water-soluble polyurethane emulsion or polyacrylate emulsion may be selected. The concentration of the water-based adhesive is selected in the range of 20 to 50 wt%, for example, 20 wt%, 30 wt%, 40 wt% or 50 wt% is selected. The immersion treatment time is selected as 0.5 to 5 s. The immersion treatment time should not be too short, otherwise the amount of adhesive immersion is too small, and the composite yarn is easy to tear the adhesive on the inorganic fiber composite yarn in the inside during use or bending. Of course, the adhesive immersion time should not be too long, otherwise the amount of adhesive adhesion of the inorganic fiber composite yarn will be too large. If the amount is too much, the final composite yarn will be too hard to the touch. In this process, the adhesive spray coating method of the first covering tow after dipping can be realized by using a height difference of more than 0.5m, and the dipping pool of the aqueous adhesive is lower than the material supply port of the oven by 0.5m or more, and the adhesive solution of the aqueous adhesive on the yarn after dipping in the adhesive during the tow advancement process slides down into the dipping pool by the action of its own gravity, forming a uniform adhesive film on the outer surface of the first covering tow to obtain a composite monofilament. The adhesive knife coating method of the first covering tow after dipping in the adhesive is to set a gauge hole above the adhesive solution surface, and after the first covering tow is dipped in the adhesive, the gauge hole is used to scrape off the excess aqueous adhesive emulsion on its surface, and the diameter of the gauge hole is generally selected to be 30 to 150 μm according to the fineness of the composite monofilament. In the specific examples 1 to 6 of this application, for convenience, a composite monofilament is obtained by using the adhesive spray coating method after adhesive dipping.

[0061] Step 3: Dry and cool the composite single fiber, then feed it into an oven 231 at a temperature of 80-120°C for 3-6 s, and then rapidly cool it with a cold air nozzle to obtain a composite single fiber 312, with the cooling temperature being 5-20°C.

[0062] Step 4: The composite filaments after drying and cooling are coated in parallel on the high-toughness low-elasticity organic composite yarn, and the tensions of the high-toughness low-elasticity organic composite yarn and the composite filaments after drying and cooling are controlled, and the high-toughness low-elasticity organic composite yarn and the composite filaments after drying and cooling are drawn into the arc-shaped guide groove of the second godet roller unit 241 of the second guiding composite mechanism 24, and the high-toughness low-elasticity organic composite yarn is spread in the arc-shaped guide groove of the second godet roller unit 241 by the action of tension, and the composite filaments after drying and cooling are located at the center position on the spread high-toughness low-elasticity organic composite yarn, and after being guided by the second godet roller unit 241, the composite filaments after drying and cooling are located at the core, and the high-toughness low-elasticity organic composite yarn is coated in parallel on the composite filaments after drying and cooling. In this process, the tension on the supply path of the organic fiber composite yarn is selectively controlled to 4-6 cN, and the tension on the tow advance path of the composite monofilament after drying and cooling is the same as the tension of the metal monofilament, and is in the range of 7-12 cN. The high tenacity low elasticity organic composite yarn can be selected from ultra-high molecular weight polyethylene (UHMWPE) composite yarn, high tenacity low elasticity polyester composite yarn, aramid 1414, or high tenacity vinylon. According to the needs of the product, taking into consideration the complete covering, the fineness of the high tenacity low elasticity organic composite yarn is 150-400D, and for example, a high tenacity low elasticity composite yarn such as 150D, 200D, 300D, or 400D may be selected.

[0063] Step 5: Perform single covering or double covering. The outer side of the second covering tow is subjected to single covering or double covering by a covering mechanism 25 to obtain the cut-resistant composite spun yarn. The single covering can be performed by using staple spun yarn or long fiber. The double covering structure layer is a covering structure of staple spun yarn and staple spun yarn, a covering structure of long fiber and long fiber, or a covering structure of staple spun yarn and long fiber, and the twist directions of the covering spun yarns of the two layers of the double covering structure layer are opposite to each other. The staple spun yarn of the staple spun yarn covering structure layer may be one pure spun yarn selected from cotton, hemp, wool, polyester, nylon, and acrylic fiber, or any two or more blended yarns, the filaments of the filament covering structure layer are nylon filaments and / or polyester filaments, the staple spun yarn has a fineness of 32-80 British count, a twist coefficient of 260-420, and a covering twist of 400-800 turns / meter, and the filaments have a fineness of 30-100D, and a covering twist of 400-800 turns / meter. Single covering or double covering itself is a common technical means for those skilled in the art to produce covering yarn, so a detailed description is omitted here. Regarding the covering order and the selection of covering yarns, the double covering structure layer may be selected as a covering structure of staple spun yarn and staple spun yarn, a covering structure of filament and filament, or a covering structure of staple spun yarn and filament, but the twist directions of the covering spun yarns of the two layers of the double covering structure layer should be opposite, and those skilled in the art may select the above covering materials taking into consideration the application and feel of the product.

[0064] In a preferred embodiment of the present application, for the guide groove of the first godet roller in step 1 and the guide groove of the second godet roller in step 4, both of them use V-shaped godet roller guide grooves with an arc-shaped bottom. Therefore, when the inorganic fiber composite yarn and the organic fiber composite yarn are expanded, the arc-shaped bottom of the V-shaped godet roller guide groove provides a space for expansion and allows the composite yarn to spread along the arc surface, which further contributes to placing the metal monofilament or composite monofilament in the central position on the expanded composite yarn, and realizes that the composite yarn is coated parallel to the outer surface of the monofilament.

[0065] The cut-resistant composite spun yarn processed by the processing device of the present application and its specific processing process will be described below through specific product application examples. The aqueous adhesives used in Examples 1 to 6 are all aqueous polyurethane emulsions.

[0066] Example 1 (1#) The cut-resistant composite spun yarn of the present application is manufactured using 20 μm tungsten yarn as the core yarn, 100D glass fiber as the inorganic composite yarn, and 200D ultra-high molecular weight polyethylene (UHMWPE) composite yarn as the organic composite yarn, according to the process and parameters in Table 1 and Table 1 (continued), columns 2 to 5.

[0067] Example 2 (2#) The cut-resistant composite spun yarn of the present application is manufactured using 25 μm tungsten yarn as the core yarn, 100D glass fiber as the inorganic composite yarn, and 200D ultra-high molecular weight polyethylene (UHMWPE) composite yarn as the organic composite yarn, according to the process and parameters in Table 1 and Table 1 (continued), columns 2 to 5.

[0068] Example 3 (3#) The cut-resistant composite spun yarn of the present application is manufactured using 30 μm tungsten yarn as the core yarn, 200D basalt fiber as the inorganic composite yarn, and 200D ultra-high molecular weight polyethylene (UHMWPE) composite yarn as the organic composite yarn according to the process and parameters in Table 1 and Table 1 (continued), columns 2 to 5.

[0069] Example 4 (4#) The cut-resistant composite spun yarn of the present application is manufactured using 10 μm tungsten yarn as the core yarn, 100D basalt fiber as the inorganic composite yarn, and 200D aramid 1414 composite yarn as the organic composite yarn according to the process and parameters in Table 1 and Table 1 (continued), columns 2 to 5.

[0070] Example 5 (5#) The cut-resistant composite spun yarn of the present application is manufactured using 60 μm stainless steel yarn as the core yarn, 200D basalt fiber as the inorganic composite yarn, and 400D aramid 1414 composite yarn as the organic composite yarn, according to the processes and parameters in Table 1 as a whole and columns 2 to 5 of Table 1 (continued).

[0071] Example 6 (6#) The cut-resistant composite spun yarn of the present application is manufactured using 35 μm stainless steel yarn as the core yarn, 200D glass fiber as the inorganic composite yarn, and 400D aramid 1414 composite yarn as the organic composite yarn according to the process and parameters in Table 1 and Table 1 (continued), columns 2 to 5.

[0072] Comparative Example 1 (1'#) A 20 μm tungsten yarn was used as the core yarn, and 100D glass fiber and 200D ultra-high molecular weight polyethylene (UHMWPE) composite yarn were simultaneously fed in parallel to form the core yarn. This was then produced by the same covering process as in Example 1 to obtain a conventional composite covered yarn, which was used as a comparative example for Example 1.

[0073] Comparative Example 2 (2'#) A 25 μm tungsten yarn was used as the core yarn, and 100D glass fiber and 200D ultra-high molecular weight polyethylene (UHMWPE) composite yarn were simultaneously fed in parallel to form the core yarn. This was then produced by the same covering process as in Example 2 to obtain a conventional composite covered yarn, which was used as a comparative example for Example 2.

[0074] JPEG0007608596000001.jpg92170

[0075] JPEG0007608596000002.jpg178170

[0076] In the above-mentioned Examples 1-6 and Comparative Examples 1'# and 2'# of Examples 1-2 of the present application, the cut-resistant composite yarn was obtained by the above-mentioned process, and then the composite yarn and the same specification spandex filament were fed in parallel and knitted by an 18G / 13G needle loom to obtain a glove lining with cut prevention function. The glove lining with cut prevention function was tested according to the EN388 standard, and its cut resistance value and level are listed in Table 1 (continued), and all of its cut resistance levels can reach level D or above.

[0077] As can be seen by comparing the cut resistance values ​​of the products of Examples 1-2 and their comparative examples in Table 1 above, under the same comparative conditions, the cut resistance performance of the cut-resistant composite yarn product of the present application was improved by 9.0% and 15.3%, respectively. The cut-resistant composite yarn has a surface layer of a covering structure layer, an outer layer of an organic fiber composite yarn layer, a further outer layer of an inorganic fiber composite yarn layer after immersed in an adhesive, and a core layer of a composite spun yarn of a metal monofilament. The composite spun yarn has a tendency to gradually increase in density from the outside to the inside, and has excellent cut resistance performance. The knitted or woven fabric thereof is 1. When subjected to the impact of a knife edge, the composite yarn shrinks from the outside to the inside to increase the density, thereby mitigating the destruction of the metal fiber layer caused by the impact shear stress; when subjected to sliding cutting, it exerts a better protective effect, and avoids the surface of the metal yarn being damaged to form a cut, which reduces its cut resistance; 2. When the yarn is bent under force, the softest organic fiber layer is on the outside, which further contributes to the bending deformation, and the organic fiber layer also uses its own deformation to protect the inorganic fibers and metal fibers, avoiding the inorganic fibers from being bent too much and being exposed to form burrs that pierce the skin, improving the deformation recovery ability of the metal fibers after bending, and preventing the metal yarn from being bent to form sharp corners or sharp cracks that scratch the skin; 3. During the knitting process, when tension is applied, the yarn shrinks from the outside to the inside, so that the organic fibers in the outer layer bear the main tension, while the inorganic fibers and metal fibers are easily broken by the impact tension. 4. The organic fiber layer is located on the outside and loosely arranged, which further contributes to the penetration and adhesion of liquid colloids such as natural emulsion, PU adhesive, nitrile latex, etc. when adhesive dipping is performed on the surface of the composite spun yarn, and has the performance advantage of improving adhesive fastness.

[0078] The applicant also tested the flex resistance of the lining of the glove with cut prevention function. The test method was to wear the linings of the gloves of Examples 1-2 and Comparative Examples 1-2 on the left and right hands of the subjects, respectively, and observe them after continuously clasping their hands for 30 minutes. The test results showed that the linings of the gloves in the Comparative Example (left side of FIG. 9) and the Examples (right side of FIG. 9) had obvious differences in flex resistance, and the lining of the glove with cut prevention function in the Comparative Example had more and deeper gathers on the surface of the fingers, which was due to the difficulty of the tungsten thread recovering after being continuously folded. Compared with the Comparative Example, the lining of the glove with cut prevention function according to the Examples of the present application had better flex resistance, and the lining of the glove with cut prevention function had relatively few and shallow gathers on the surface of the fingers.

[0079] The above embodiments are only for illustrating the technical solutions of the present application, but are not limited thereto, and the present application has been described in detail with reference to the above embodiments. It is still possible to modify the technical solutions described in the above embodiments, or to equivalently replace some technical features therein, but those skilled in the art should understand that these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application. [Explanation of symbols]

[0080] 1 Frame 2 Processing equipment 21 First guide composite mechanism 211 First supply roller unit 2111 First mounting bracket 2112 First rewind shaft 2113 Damping bearing 212 No. 1 main godet roller unit 2121 First vertical screw 2122 1st L-shaped holder 2123 First horizontal screw 2124 1st V-shaped godet roller 2124a Circular groove 213 1st auxiliary godet roller unit 22 Immersion mechanism 221 Immersion Pool 222 3rd vertical screw 223 3rd L-shaped holder 224 3rd horizontal screw 225 3rd Godet Roller 23 Drying cooling mechanism 231 Oven 232 Drying lamp tube 233 3rd material supply guide pulley 234 Cooling passage 235 Material supply port 236 Material discharge port 237 3rd material discharge guide pulley 24 Second guide composite mechanism 241 Second Godet Roller Unit 2411 2nd vertical screw 2412 Second L-shaped holder 2413 Second horizontal screw 2414 2nd V-shaped godet roller 25 Covering mechanism 251 4th Godet Roller 252 Covering machine 31 1st composite thread tube 311 First Covering Tow 312 Composite Single Fiber 32 2nd composite thread tube 321 Second Covering Toe

Claims

1. A composite spun yarn, A core yarn located in a core portion of the composite spun yarn; A first composite yarn made of a plurality of monofilaments of a single material, the plurality of monofilaments being wrapped in parallel on an outer peripheral surface of the core yarn; an aqueous adhesive disposed on a surface and an interior of the first composite yarn, and between the first composite yarn and a core yarn, the aqueous adhesive on the surface of the first composite yarn forming an aqueous adhesive layer; a second composite yarn consisting of a plurality of monofilaments of a single material, the plurality of monofilaments being coated in parallel on the outer peripheral surface of the aqueous adhesive layer; A single covering structure layer or a double covering structure layer that is covered on the outside of the second composite yarn, The first composite yarn and the second composite yarn are both made of organic composite yarn or inorganic composite yarn, The core yarn comprises a metal filament, an organic filament or an inorganic filament, while the water-based adhesive comprises a water-based polyurethane emulsion or a polyacrylate emulsion; The core yarn is a metal filament located at the core of the composite spun yarn, the first composite yarn is an inorganic fiber composite yarn, and a plurality of monofilaments of the inorganic fiber composite yarn are coated in parallel on the outer surface of the metal filament, the second composite yarn is an organic composite yarn, and the linear density of the composite spun yarn is 33.3 tex to 72.2 tex, The metal filament includes a stainless steel filament, a tungsten filament, or a nickel filament, and the fineness of the metal filament is 10 to 60 μm. The inorganic fiber composite yarn is selected from a glass fiber composite yarn or a basalt fiber composite yarn, and the fineness of the inorganic fiber composite yarn is 50 to 200 D. The organic composite yarn is any one selected from ultra-high molecular weight polyethylene, aramid 1414, and vinylon, and the fineness of the organic composite yarn is 150 to 400 D. A composite spun yarn characterized by:

2. The single covering structure layer includes a staple spun yarn covering structure layer or a long fiber covering structure layer, and the double covering structure layer is a covering structure of staple spun yarn and staple spun yarn, a covering structure of long fiber and long fiber, or a covering structure of staple spun yarn and long fiber, and the twist directions of the covering spun yarns of the two layers of the double covering structure layer are opposite to each other, and the staple spun yarns of the staple spun yarn covering structure layer are made of cotton, linen, wool, polyester, nylon, acrylic, etc.

2. The composite spun yarn according to claim 1, wherein the filaments of the filament covering structure layer are nylon filaments and / or polyester filaments, the staple spun yarn has a fineness of 32-80 British count, a twist factor of 260-420, and a covering twist of 400-800 turns / meter, and the filaments have a fineness of 30-100D, and a covering twist of 400-800 turns / meter.

3. A method for processing the composite spun yarn according to claim 1 or 2, comprising the steps of: a step (1) of covering an inorganic fiber composite yarn with a metal filament in parallel, controlling the tension of the metal filament and the inorganic fiber composite yarn, respectively, drawing the metal filament and the inorganic fiber composite yarn into a guide groove of a first godet roller, and allowing the inorganic fiber composite yarn to be spread in the guide groove of the first godet roller by the action of tension, the metal filament being located at a central position on a plurality of monofilaments constituting the inorganic fiber composite yarn after the spreading, the metal filament being located at a core after being guided by the first godet roller, and forming a first covering tow in which a plurality of monofilaments constituting the inorganic fiber composite yarn are covered in parallel on an outer peripheral surface of the metal filament; (2) performing a dipping process, supplying the first covering tow to a dipping pool containing an aqueous adhesive to perform a dipping process, and then performing adhesive spray coating or adhesive knife coating on the first covering tow after the dipping process, the concentration of the aqueous adhesive is 20 to 50 wt%, and the dipping process time is 0.5 to 5 s; (3) drying and cooling, and sending the first covered tow after the adhesive spray coating or adhesive knife coating into an oven at a temperature of 80-120°C, the treatment time is 3-6s, and then rapidly cooling it by a cold air nozzle to obtain a composite monofilament, and the cooling temperature is 5-20°C; (4) covering an organic composite yarn with the composite monofilament after drying and cooling, controlling the tensions of the organic composite yarn and the composite monofilament after drying and cooling, respectively, drawing the organic composite yarn and the composite monofilament after drying and cooling into a guide groove of a second godet roller, allowing the organic composite yarn to be spread in the guide groove of the second godet roller by the action of tension, and forming a second covering tow in which the composite monofilament after drying and cooling is located at a central position on the multiple monofilaments constituting the spread organic composite yarn, and the composite monofilament after drying and cooling is located at a core after being guided by the second godet roller, and the multiple monofilaments constituting the organic composite yarn are covered in parallel to the composite monofilament after drying and cooling; and (5) performing single covering or double covering, and performing single covering or double covering on the outside of the second covering tow by a covering mechanism to obtain the composite spun yarn, the single covering being covered using staple spun yarn or long fiber, the double covering structure layer being a covering structure of staple spun yarn and staple spun yarn, a covering structure of long fiber and long fiber, or a covering structure of staple spun yarn and long fiber, and the twist directions of the two layers of covering spun yarns of the double covering structure layer are opposite.

4. The processing apparatus for the composite spun yarn according to claim 1 or 2, 3. The composite spun yarn processing apparatus according to claim 1 or 2, characterized in that it comprises a frame and a plurality of sets of processing devices arranged in parallel on the frame, each set of the processing devices comprising: a first guide and combination mechanism arranged at one end of the frame; a dipping mechanism arranged below the discharge end of the first guide and combination mechanism; a drying and cooling mechanism arranged in the center of the frame and located downstream of the dipping mechanism; a second guide and combination mechanism arranged at the discharge end of the drying and cooling mechanism; and a covering mechanism arranged at the discharge end of the second guide and combination mechanism.

5. 5. The composite spun yarn processing apparatus according to claim 4, wherein the first guide composite mechanism comprises a first supply roller unit connected to the frame, a first main godet roller unit installed inside the first supply roller unit, and a first auxiliary godet roller unit installed at the material inlet end of the first main godet roller unit.

6. 6. The composite spun yarn processing device of claim 5, wherein the first main godet roller unit comprises a first vertical screw connected to the frame, a first L-shaped holder connected to the top of the first vertical screw, a first horizontal screw connected to the first L-shaped holder, and a first V-shaped godet roller installed on the first horizontal screw, wherein the central portion of the first V-shaped godet roller presents an arc groove, and the structure of the second guide composite mechanism is the same as that of the first main godet roller unit.

7. A protective article, The composite spun yarn according to claim 1 or 2 and spandex and / or nylon filaments are fed in parallel, and knitted into a knit having cut-resistant properties by a needle loom; or The composite spun yarn is directly woven into a fabric having cut-resistant performance by a loom machine, and the cut-resistant performance of the knitted or woven fabric is tested according to EN388 standard, and the cut-resistant level thereof can reach level D or above. The protective equipment includes gloves, protective sleeves, collars, clothes or shoes having cut-resistant function.

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