A non-rigid cut-resistant yarn

Abstract

This invention discloses a non-rigid cut-resistant yarn, relating to the field of yarn technology. It includes a first yarn body and a second yarn body, the second yarn body being twisted, and the first yarn body wrapping around and contacting the second yarn body. The first yarn body includes a first inner core and a first outer sheath layer. The first inner core is twisted, and the first outer sheath layer includes a first bonding portion and a first fluffy portion. The first fluffy portion wraps around the outside of the first bonding portion and has a gap with it. The second yarn body includes a second inner core, a middle layer, and a second outer sheath layer. The second inner core is twisted, and the second outer sheath layer includes a second bonding portion and a second fluffy portion. The second fluffy portion wraps around the outside of the second bonding portion and has a gap with it. The first inner core, second inner core, and middle layer are all made of ultra-high molecular weight polyethylene, and the first and second outer sheath layers are both made of polyester fiber. This invention makes the cut-resistant yarn soft and skin-friendly while providing highly effective cut-resistant performance.

Description

Technical Field

[0001] This invention relates to the field of yarn technology, and in particular to a non-rigid, cut-resistant yarn. Background Technology

[0002] In daily life and work, there are potential dangers to the body from objects such as knives, glass, metal scraps, gravel, and shells. To prevent cuts from these objects, the demand for civilian cut-resistant protective products is increasing. With the development of flexible, high-strength fiber materials, using high-performance fibers to create new cut-resistant materials has become a new development trend. These products are characterized by good breathability, lightweight comfort, and other features. The key to achieving cut-resistant products lies in the preparation of the cut-resistant yarn. Currently, the main method for preparing cut-resistant yarn is to use high-performance fibers as the main raw material, combining them with materials such as spandex, nylon, polyester, glass fiber, stainless steel wire, and tungsten wire according to different structures to form coated yarns. Among them, hard materials such as stainless steel wire or glass fiber remain essential raw materials in products with high-performance cut resistance. In addition, post-treatment methods such as impregnation and coating of the yarn are used to change the frictional properties of the yarn surface, thereby weakening the destructive force of objects. However, the addition of hard fibers to the yarn or the use of impregnation and coating treatments still result in cut-resistant products that are heavy, lack flexibility, and are not comfortable enough. Skin contact with the skin may even cause skin allergies. Therefore, addressing the issues of weight and comfort in flexible protective products and strengthening the research and development of high-performance cut-resistant materials are of great significance.

[0003] Incorporating rigid fibers such as glass fiber, stainless steel wire, and tungsten wire into coated yarns is currently the main method for producing high-efficiency cut-resistant yarns. Existing technologies use cut-resistant yarns consisting of a metal core yarn and a wrapping yarn covering the metal core yarn. By increasing the number of metal wires in the yarn, the cut-resistant gloves produced exhibit significantly improved cut resistance and a much longer service life. Similarly, current cut-resistant products made using rigid materials are prone to deformation and do not conform well to the skin, affecting the precision and agility of operation. Furthermore, they are easily brittle and prone to breakage during use, producing burrs that can cause itching or secondary skin damage.

[0004] Coating and impregnation can also effectively improve protective performance and are a commonly used treatment method. For example, after heating the metal core wire to 80-100℃, a layer of nylon is tightly wrapped around its surface, and then a polyurethane emulsion is directly passed through it. After curing, a polyurethane elastomer is formed on the surface of the nylon, thus obtaining cut-resistant yarn. However, products woven from coated yarn can lead to serious skin and respiratory diseases when used in close contact with the skin for a long time.

[0005] Besides incorporating stiff fibers and using coatings, improvements in yarn structure design can also enhance protective performance. For example, using stiff filaments (stainless steel wire, tungsten wire, etc.) as the core yarn and heat-sensitive short fibers as the outer wrapping layer, the yarn is heated to melt the outer short fiber wrapping layer, forming the coating. This yarn structure effectively solves the problem of stiff filaments easily breaking and producing burrs. However, the molten yarn is stiff and not flexible enough, and the woven products cannot be used at high temperatures.

[0006] In summary, the existing implementation has the following problems: First, the utilization rate of high-performance fibers is low, failing to achieve optimal performance; second, long-term skin contact with the skin can cause problems such as itching and redness, or cause certain damage to the respiratory tract; third, it cannot be used in special environments, such as strong acids, strong alkalis, or high temperatures. Summary of the Invention

[0007] The purpose of this invention is to provide a non-rigid cut-resistant yarn to solve the problems existing in the prior art, so that the cut-resistant yarn is soft and skin-friendly while having high-efficiency cut-resistant performance.

[0008] To achieve the above objectives, the present invention provides the following solution:

[0009] This invention provides a non-rigid anti-cut yarn, comprising a first yarn body and a second yarn body, wherein the second yarn body is twisted, and the first yarn body wraps around the second yarn body and the first yarn body is in contact with the second yarn body;

[0010] The first yarn body includes a first inner core and a first outer sheath layer. The first inner core is twisted and includes a plurality of first inner monofilaments. The first outer sheath layer includes a first bonding portion and a first fluffy portion. Both the first bonding portion and the first fluffy portion include a plurality of first outer monofilaments. The first bonding portion is wrapped around the outside of the first inner core and in contact with the first inner core. The first fluffy portion is wrapped around the outside of the first bonding portion and there is a gap between the first bonding portion and the first fluffy portion.

[0011] The second yarn body includes a second inner core, a middle layer, and a second outer sheath layer. The second inner core is twisted and includes a plurality of second inner monofilaments. The middle layer includes a plurality of middle monofilaments. The second outer sheath layer includes a second bonding portion and a second fluffy portion. Both the second bonding portion and the second fluffy portion include a plurality of second outer monofilaments. The middle layer wraps around the outside of the second inner core and is in contact with the second inner core. The second bonding portion wraps around the outside of the second inner core, or wraps around the outside of the middle layer, or wraps around the outside of both the second inner core and the middle layer. The second bonding portion is in contact with the second inner core, or the second bonding portion is in contact with the middle layer, or the second bonding portion is in contact with both the second inner core and the middle layer. The second fluffy portion is wrapped around the outside of the second bonding portion, and there is a gap between the second bonding portion and the second fluffy portion.

[0012] The first inner core, the second inner core, and the intermediate layer are all made of ultra-high molecular weight polyethylene, and the first outer sheath and the second outer sheath are both made of polyester fiber.

[0013] Preferably, the wrapping density of the first yarn body is 100-1500 wraps / m.

[0014] Preferably, the non-rigid anti-cut yarn is provided with a reinforcing section, and the wrapping density of the first yarn in the reinforcing section is greater than the wrapping density of the first yarn at other positions.

[0015] Preferably, the wrapping density of the first outer sheath layer is 200-1600 pieces / m; the wrapping density of the second outer sheath layer is 200-1600 pieces / m.

[0016] Preferably, the first yarn body includes a plurality of first yarn body segments arranged in sequence, each first yarn body segment including a plurality of first wrapping segments arranged in sequence, and the wrapping density of the first outer sheath layer of each first wrapping segment increases sequentially from one end of the first yarn body segment to the other end of the first yarn body segment.

[0017] Preferably, the wrapping direction of the intermediate layer is the same as or opposite to the wrapping direction of the second outer sheath layer.

[0018] Preferably, the wrapping density of the intermediate layer is 250-500 pieces / m.

[0019] Preferably, the second yarn body includes a plurality of second yarn body segments arranged in sequence, each second yarn body segment including a plurality of second wrapping segments arranged in sequence, the wrapping density of the intermediate layer of each second wrapping segment increasing sequentially from one end of the second yarn body segment to the other end of the second yarn body segment, and the wrapping density of the second outer sheath layer of each second wrapping segment increasing sequentially from one end of the second yarn body segment to the other end of the second yarn body segment.

[0020] Preferably, the intermediate layer and the second outer sheath are arranged in a spaced-apart side-by-side, closely adjacent side-by-side, fully overlapped, or partially overlapped state;

[0021] When the intermediate layer and the second outer sheath are arranged side by side with intervals, the wrapping angle of the intermediate layer is the same as that of the second outer sheath, the wrapping density of the intermediate layer is the same as that of the second outer sheath, the intermediate layer and the second bonding portion are both wrapped around the outside of the second inner core and both the intermediate layer and the second bonding portion are in contact with the second inner core, and there is a gap between the intermediate layer and the second bonding portion;

[0022] When the intermediate layer and the second outer sheath are arranged close together, the wrapping angle of the intermediate layer is the same as that of the second outer sheath, the wrapping density of the intermediate layer is the same as that of the second outer sheath, the intermediate layer and the second bonding portion are both wrapped around the outside of the second inner core and both the intermediate layer and the second bonding portion are in contact with the second inner core, the intermediate layer and the second bonding portion are alternately wrapped and one side of the intermediate layer is in contact with one side of the second bonding portion;

[0023] When the intermediate layer and the second outer sheath are fully overlapped, the second adhesive portion wraps around the outside of the intermediate layer and contacts the intermediate layer, and the second outer sheath achieves full coverage of the intermediate layer;

[0024] When the intermediate layer and the second outer sheath are in a semi-overlapping state, the wrapping angle of the intermediate layer is smaller than the wrapping angle of the second outer sheath, the wrapping density of the intermediate layer is smaller than the wrapping density of the second outer sheath, the intermediate layer includes a shielding portion and an exposed portion, the second adhesive portion is wrapped around the outside of the shielding portion, and the second adhesive portion is in contact with the shielding portion.

[0025] Preferably, the ultra-high molecular weight polyethylene has a fineness of 100-200D, and the polyester fiber has a fineness of 70-150D.

[0026] The present invention achieves the following technical effects compared to the prior art:

[0027] The non-rigid cut-resistant yarn designed in this invention has high-efficiency protective performance and is soft and skin-friendly, suitable for close-fitting use. The non-rigid cut-resistant yarn of this invention has the following structural and performance advantages: First, unlike other existing cut-resistant yarns, the first inner core of the first yarn body and the second inner core of the second yarn body are twisted, while the first outer sheath layer of the first yarn body and the second outer sheath layer of the second yarn body are fluffy, unlike the straightened state produced by traditional twisting methods. This structure enhances the ability to buffer cutting energy. The wrapping tightness and wrapping angle of the first and second outer sheath layers can be individually and arbitrarily adjusted, which not only improves the yarn cohesion and binding force, enhancing cut resistance, but also provides lateral elasticity to the non-rigid cut-resistant yarn, making the multi-layered non-rigid cut-resistant yarn soft and comfortable. Secondly, the non-rigid cut-resistant yarn not only enhances the surface texture of the yarn, increasing the friction between the yarn and the object being cut, thus consuming more energy, but its compact structure also increases the cohesion between fibers, reducing the possibility of fiber movement, improving the utilization rate of the non-rigid cut-resistant yarn, and enhancing its cut-resistant performance. Thirdly, the composite structure design of the first and second yarn bodies allows for uniform wrapping, and reinforcement sections can be designed according to the intended use of the cut-resistant product. The resulting product can provide focused protection for body parts such as the neck, wrists, elbows, and heart. Furthermore, the product is woven in one piece, eliminating the need for complex fabric structure design or methods such as layering, sewing, or impregnation coating to enhance product performance. The cut-resistant yarn presented in this invention exhibits excellent cut-resistant performance without the use of rigid materials, and the yarn is fine-count, soft to the touch, comfortable, and lightweight. It can be used not only in cut-resistant products but also woven into fabrics as a layer added to protective products. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the non-rigid anti-cut yarn of the present invention (without reinforcement section);

[0030] Figure 2 This is a schematic diagram of the non-rigid anti-cut yarn of the present invention (with reinforcing sections);

[0031] Figure 3 This is a schematic diagram of the first yarn segment of the present invention;

[0032] Figure 4 This is a schematic diagram of the first wrapping segment of the present invention. Figure 1 ;

[0033] Figure 5 This is a schematic diagram of the first wrapping segment of the present invention. Figure 2 (The encapsulation density of the first outer sheath is greater than) Figure 4 (Encapsulation density of the first outer sheath layer);

[0034] Figure 6 This is a schematic diagram of the first wrapping segment of the present invention. Figure 3 (The encapsulation density of the first outer sheath is greater than) Figure 5 (Encapsulation density of the first outer sheath layer);

[0035] Figure 7 This is a schematic diagram of the second yarn segment of the present invention;

[0036] Figure 8 This is a schematic diagram of the second wrapping segment of the present invention (the wrapping direction, wrapping angle, and wrapping density of the intermediate layer and the second outer sheath layer are the same, and they are arranged in a spaced-out side-by-side state).

[0037] Figure 9 This is a schematic diagram of the second wrapping segment of the present invention (the wrapping direction, wrapping angle, and wrapping density of the intermediate layer and the second outer sheath layer are the same, and they are arranged in close side by side).

[0038] Figure 10 This is a schematic diagram of the second wrapping segment of the present invention (the intermediate layer and the second outer sheath layer are fully overlapped);

[0039] Figure 11 This is a schematic diagram of the second wrapping segment of the present invention (the wrapping direction of the intermediate layer and the second outer sheath layer is the same, the wrapping density of the intermediate layer is less than the wrapping density of the second outer sheath layer, and they are in a semi-overlapping state).

[0040] Figure 12 This is a schematic diagram of the second wrapping segment of the present invention (the wrapping directions of the intermediate layer and the second outer sheath layer are opposite);

[0041] Figure 13 This is a schematic diagram illustrating the processing of non-rigid anti-cut yarn with reinforcing sections according to the present invention;

[0042] Figure 14 Photograph of the first yarn body of the present invention (Application Example 1);

[0043] Figure 15 Photograph 2 of the first yarn body of the present invention (Application Example 1);

[0044] Figure 16 Photograph of the second yarn body of the present invention (Application Example 1);

[0045] Figure 17 Photograph of the non-rigid anti-cut yarn of the present invention (Application Example 1);

[0046] Figure 18 Photographs of fabrics woven using the non-rigid cut-resistant yarns of the present invention (Application Example 1);

[0047] Figure 19 This is a schematic photograph of the first yarn body of the present invention (Application Example 2);

[0048] Figure 20 Photograph 1 of the second yarn body of the present invention (Application Example 2);

[0049] Figure 21 Photograph 2 of the second yarn body of the present invention (Application Example 2);

[0050] Figure 22 Photographs of fabrics woven using the non-rigid cut-resistant yarns of the present invention (Application Example 2);

[0051] Wherein: 100-first yarn body, 200-second yarn body, 1-first inner core, 2-first outer sheath layer, 3-second inner core, 4-intermediate layer, 5-second outer sheath layer, 6-reinforcing section, 7-first wrapping section, 8-second wrapping section, 9-first yarn body section, 10-second yarn body section. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] The purpose of this invention is to provide a non-rigid cut-resistant yarn to solve the problems existing in the prior art, so that the cut-resistant yarn is soft and skin-friendly while having high-efficiency cut-resistant performance.

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] like Figures 1 to 13 As shown: This embodiment provides a non-rigid anti-cut yarn, including a first yarn body 100 and a second yarn body 200. The second yarn body 200 is twisted, and the twist angle of the second yarn body 200 (i.e., the angle between the tangent at any point on the second yarn body 200 and the axis of the non-rigid anti-cut yarn) is 0-10°. The first yarn body 100 is wrapped around the second yarn body 200 and the first yarn body 100 is in contact with the second yarn body 200. The wrapping density of the first yarn body 100 is 100-1500 pieces / m, preferably 550 pieces / m.

[0056] The first yarn body 100 includes a first inner core 1 and a first outer sheath layer 2. The first inner core 1 is twisted, and the twist angle of the first inner core 1 (i.e., the angle between the tangent at any point on the first inner core 1 and the axis of the non-rigid anti-cut yarn) is 0-10°. The first inner core 1 includes a plurality of first inner monofilaments. The first outer sheath layer 2 includes a first bonding part and a first fluffy part. Both the first bonding part and the first fluffy part include a plurality of first outer monofilaments. The first bonding part is wrapped around the outside of the first inner core 1 in a flat state and contacts the first inner core 1. The first fluffy part is wrapped around the outside of the first bonding part and there is a gap between the first bonding part and the first fluffy part, i.e., the first fluffy part is in a fluffy state.

[0057] The second yarn body 200 includes a second inner core 3, an intermediate layer 4, and a second outer sheath layer 5. The second inner core 3 is twisted, and the twist angle of the second inner core 3 (i.e., the angle between the tangent at any point on the second inner core 3 and the axis of the non-rigid anti-cut yarn) is 0-10°. The second inner core 3 includes a plurality of second inner monofilaments. The intermediate layer 4 includes a plurality of intermediate monofilaments. The second outer sheath layer 5 includes a second bonding portion and a second fluffy portion. Both the second bonding portion and the second fluffy portion include a plurality of second outer monofilaments. The intermediate layer 4 wraps around the outside of the second inner core 3 and is attached to the outer sheath layer 5. The second inner core 3 is in contact with the second adhesive part, which is wrapped around the outside of the second inner core 3 in a flat state, or wrapped around the outside of the intermediate layer 4 in a flat state, or wrapped around the outside of the second inner core 3 and the intermediate layer 4 in a flat state. The second adhesive part is in contact with the second inner core 3, or the second adhesive part is in contact with the intermediate layer 4, or the second adhesive part is in contact with the second inner core 3 and the intermediate layer 4 respectively. The second fluffy part is wrapped around the outside of the second adhesive part, and there is a gap between the second adhesive part and the second fluffy part, that is, the second fluffy part is in a fluffy state.

[0058] The degree of twisting and expansion of the first inner core 1 and the second inner core 3, the tightness of the wrapping of the first outer sheath layer 2 and the second outer sheath layer 5, the wrapping density and the wrapping angle can all be controlled individually, and the wrapping state can be controlled by uniform wrapping or tight and loose alternating wrapping.

[0059] The first inner core 1, the second inner core 3, and the intermediate layer 4 are all made of white ultra-high molecular weight polyethylene (UHMWPE). The fineness of UHMWPE is 100-200D. When the UHMWPE is 100D, the number of monofilaments is 20, and when the UHMWPE is 200D, the number of monofilaments is 40. The first outer sheath layer 2 and the second outer sheath layer 5 are both made of polyester fiber. The fineness of polyester fiber is 70-150D. When the polyester fiber is 70D, the number of monofilaments is 36, and when the polyester fiber is 150D, the number of monofilaments is 72. The fluffiness of the first and second fluffy parts is related to the tension of the polyester fiber. The greater the tension, the tighter the polyester fiber; the smaller the tension, the fluffier the polyester fiber.

[0060] In this embodiment, the weight percentage of ultra-high molecular weight polyethylene fiber is 57-74%, preferably 58%; the weight percentage of polyester fiber is 26-43%, preferably 42%.

[0061] The first inner core 1 and the second inner core 3 are twisted, and the twisting direction is adjustable, which is completely different from the straight state of traditional core-spun yarn. The first inner core 1 and the second inner core 3 can effectively buffer the cutting force of the blade on the fabric. The first and second fluffy parts are fluffy and made of polyester fiber, providing lateral elasticity. As a material for wearing comfort, it can provide lateral elasticity and wearing comfort for the yarn, making the multi-layer non-rigid cut-resistant yarn soft and comfortable. The second yarn body 200 is the cut-resistant part of the non-rigid cut-resistant yarn. Its main purpose is to enhance the texture of the non-rigid cut-resistant yarn fabric, thereby increasing the friction between the non-rigid cut-resistant yarn and the blade, reducing the cutting force, consuming more energy, and improving the cut resistance.

[0062] Specifically, in this embodiment, the degree of twist of the second yarn 200 corresponds to the wrapping density of the first yarn 100, and the degree of twist of the first inner core 1 corresponds to the wrapping density of the first outer sheath layer 2. The greater the wrapping density of the first outer sheath layer 2, the greater the degree of twist of the first inner core 1; the smaller the wrapping density of the first outer sheath layer 2, the smaller the degree of twist of the first inner core 1. Similarly, the degree of twist of the second inner core 3 corresponds to the wrapping density of the second outer sheath layer 5. The greater the wrapping density of the second outer sheath layer 5, the greater the degree of twist of the second inner core 3; the smaller the wrapping density of the second outer sheath layer 5, the smaller the degree of twist of the second inner core 3.

[0063] In this embodiment, the first yarn 100 can be uniformly wrapped around the second yarn 200 to form a non-rigid cut-resistant yarn. Alternatively, the non-rigid cut-resistant yarn may have a reinforcing section 6, where the wrapping density of the first yarn 100 in the reinforcing section 6 is greater than that in other locations. The reinforcing section 6 provides focused protection for body parts such as the neck, wrists, elbows, and heart. The designed product structure is integrally molded, requiring no complex fabric structure design and avoiding the use of modification treatments, impregnation coatings, or other treatments to enhance protective performance.

[0064] In this embodiment, the wrapping density of the first outer sheath layer 2 is 200-1600 pieces / m, preferably 750 pieces / m; the intermediate layer 4 is wrapped around the first inner core 1 in a flat state, and the wrapping density of the intermediate layer 4 is 250-500 pieces / m, preferably 450 pieces / m; the wrapping density of the second outer sheath layer 5 is 200-1600 pieces / m, preferably 700 pieces / m.

[0065] In this embodiment, the first yarn body 100 includes a plurality of first yarn body segments 9 arranged sequentially, and each first yarn body segment 9 includes a plurality of first wrapping segments 7 arranged sequentially. The wrapping density of the first outer sheath layer 2 of each first wrapping segment 7 increases sequentially from one end of the first yarn body segment 9 to the other end. Furthermore, in the first yarn body 100, the wrapping density of the first wrapping segments 7 in each first yarn body segment 9 increases sequentially from one end of the first yarn body 100 to the other end.

[0066] In this embodiment, the second yarn body 200 includes a plurality of second yarn body segments 10 arranged sequentially. Each second yarn body segment 10 includes a plurality of second wrapping segments 8 arranged sequentially. The wrapping density of the intermediate layer 4 of each second wrapping segment 8 increases sequentially from one end of the second yarn body segment 10 to the other end. The wrapping density of the second outer sheath layer 5 of each second wrapping segment 8 also increases sequentially from one end of the second yarn body segment 10 to the other end. Furthermore, in the second yarn body 200, the wrapping density of the second wrapping segments 8 in each second yarn body segment 10 increases sequentially from one end of the second yarn body 200 to the other end.

[0067] In this embodiment, the wrapping direction of the intermediate layer 4 is the same as or opposite to the wrapping direction of the second outer sheath layer 5. When the wrapping direction of the intermediate layer 4 is the same as the wrapping direction of the second outer sheath layer 5, the intermediate layer 4 and the second outer sheath layer 5 are arranged in a spaced-apart side-by-side, closely side-by-side, fully overlapped, or partially overlapped state; when the wrapping direction of the intermediate layer 4 is opposite to the wrapping direction of the second outer sheath layer 5, the intermediate layer 4 and the second outer sheath layer 5 are in a cross state.

[0068] like Figure 8 As shown, when the intermediate layer 4 and the second outer sheath layer 5 are arranged side by side at intervals, the wrapping angle and wrapping density of the intermediate layer 4 and the second outer sheath layer 5 are the same. The intermediate layer 4 and the second bonding part are both wrapped around the outside of the second inner core 3 and the intermediate layer 4 and the second bonding part are both in contact with the second inner core 3. There is a gap between the intermediate layer 4 and the second bonding part.

[0069] like Figure 9 As shown, when the intermediate layer 4 and the second outer sheath layer 5 are arranged close together, the wrapping angle and wrapping density of the intermediate layer 4 and the second outer sheath layer 5 are the same. The intermediate layer 4 and the second bonding part are both wrapped around the outside of the second inner core 3 and the intermediate layer 4 and the second bonding part are both in contact with the second inner core 3. The intermediate layer 4 and the second bonding part are wrapped alternately and one side of the intermediate layer 4 is in contact with one side of the second bonding part.

[0070] like Figure 10As shown, when the intermediate layer 4 and the second outer sheath layer 5 are fully overlapped, the second bonding portion wraps around the outside of the intermediate layer 4 and contacts the intermediate layer 4. The second outer sheath layer 5 achieves full coverage of the intermediate layer 4, ensuring that the intermediate layer 4 is not exposed. The full overlap state can be divided into two types: First, the wrapping density and wrapping angle of the intermediate layer 4 and the second bonding portion are the same, and the second bonding portion overlaps on the intermediate layer 4; Second, the wrapping angle and wrapping density of the intermediate layer 4 are small and the tightness is large, while the wrapping angle and wrapping density of the second bonding portion are large and the tightness is small.

[0071] like Figure 11 As shown, when the intermediate layer 4 and the second outer sheath layer 5 are in a semi-overlapping state, the wrapping angle of the intermediate layer 4 is smaller than that of the second outer sheath layer 5, and the wrapping density of the intermediate layer 4 is smaller than that of the second outer sheath layer 5. The intermediate layer 4 includes a shielding portion and an exposed portion. The second adhesive portion is wrapped around the outside of the shielding portion and is in contact with the shielding portion. There is a difference in wrapping density between the intermediate layer 4 and the second outer sheath layer 5. When the wrapping density of the intermediate layer 4 is greater and the wrapping density of the second outer sheath layer 5 is smaller, the overlapping portion of the intermediate layer 4 and the second adhesive portion is smaller, that is, the shielding portion is smaller. When the wrapping density of the intermediate layer 4 is smaller and the wrapping of the second outer sheath layer 5 is greater, the overlapping portion of the intermediate layer 4 and the second adhesive portion is greater, and the shielding portion is larger. The intermediate layer 4 and the second outer sheath layer 5 can exist in the following states: 1. A part of the second bonding portion is wrapped around the outside of a part of the intermediate layer 4 and in contact with the intermediate layer 4, and another part of the second bonding portion is wrapped around the outside of the second inner core 3 and in contact with the second inner core 3; 2. The entire second bonding portion is wrapped around the outside of a part of the intermediate layer 4 and in contact with the intermediate layer 4.

[0072] The preparation process of the non-rigid cut-resistant yarn includes the following steps: First, the first yarn body 100 is determined to be a double-layer structure. The first outer sheath layer 2 is wrapped around the outer side of the first inner core 1 using a wrapping process and a wrapping twisting method. The first inner core 1 presents a micro-twisted structure, and polyester fibers are wrapped around the outer side. Second, the second yarn body 200 is determined to be a three-layer structure. A multi-material composite structure of the second yarn body 200 is formed through a multi-angle interactive wrapping process. Finally, the first yarn body 100 and the second yarn body 200 are designed to form a composite structure, with the second yarn body 200 presenting a micro-twisted state as the core and the first yarn body 100 interactively wrapped around the outer layer to form an integral non-rigid cut-resistant yarn.

[0073] The first yarn 100 is wrapped around the outer layer of the second yarn 200, and the wrapping state, wrapping angle, and wrapping density can all be adjusted. The first yarn 100 can be wrapped uniformly, or it can be designed to have alternating tight and sparse wrapping states according to the requirements of the reinforcing section 6. The first inner core 1 exhibits a slightly twisted and expanded state, and the tightness and wrapping angle of the outer first outer sheath layer 2 can be controlled independently. The second inner core 3 exhibits a slightly twisted and expanded state, and the tightness and wrapping angle of the outer middle layer 4 and the second outer sheath layer 5 can be controlled independently.

[0074] When designing a composite structure for the first yarn body 100 and the second yarn body 200, not only can the wrapping structure be uniformly controlled, but also the reinforcing section 6 can be designed according to the product application. The micro-twisted state of the first inner core 1 in the designed yarn structure can effectively buffer the cutting force of the blade on the fabric. The loose wrapping of the first outer sheath layer 2 and the second outer sheath layer 5 provides lateral elasticity to the non-rigid cut-resistant yarn, making the multi-layered non-rigid cut-resistant yarn soft and comfortable. Furthermore, the increased unevenness of the surface of the non-rigid cut-resistant yarn increases the friction between the non-rigid cut-resistant yarn and the blade, which can consume more cutting energy, reduce the cutting force, and enhance the cut resistance. The composite structure design of the first yarn body 100 and the second yarn body 200 also enhances the cohesion and binding force of the non-rigid cut-resistant yarn, improves the strength utilization rate of the non-rigid cut-resistant yarn, and reduces the destructive force of the blade. This embodiment of the non-rigid cut-resistant yarn achieves high cut resistance while maintaining softness, skin-friendliness, comfort, and breathability without using rigid materials such as fiberglass or stainless steel wire. It does not cause itching even after prolonged close contact with the skin. Furthermore, this non-rigid cut-resistant yarn is easy to manufacture and can be mass-produced. The adjustable structural design allows for reinforcement sections (6) to be incorporated according to the intended use, resulting in products that provide targeted protection for areas such as the neck, wrists, elbows, and heart.

[0075] Application Example 1

[0076] like Figures 14 to 18 As shown, this application example relates to a soft, skin-friendly, non-rigid cut-resistant yarn. The non-rigid cut-resistant yarn is constructed from two parts, a first yarn body 100 and a second yarn body 200, through a secondary structural design. The second yarn body 200 serves as the main body, wrapped around the first yarn body 100, with uniform wrapping tightness and angle. The first yarn body 100 has an ultra-high molecular weight polyethylene core 1 and is wrapped with 75D polyester fiber as the first outer sheath layer 2. The first yarn body segment 9 includes two first wrapping segments 7, meaning the first outer sheath layer 2 alternates between tightly wrapped and loosely wrapped sections with random wrapping density ranging from 200-1600 fibers / m, and has an S-twist direction.

[0077] The wrapping density of the middle layer 4 of the second yarn body 200 is 500 strands / m; the second outer sheath layer 5 has alternating tight and loose wrapping with random wrapping density, ranging from 200 to 1000 strands / m.

[0078] The second yarn body 200, acting as the main body, is uniformly wrapped by the first yarn body 100 at a wrapping density of 900 yarns / m. This not only increases the surface roughness of the non-rigid cut-resistant yarn, increasing the friction between the yarn and the object being cut to consume more energy and weaken the cutting force, but also increases the cohesion of the yarn, enhancing its strength utilization rate. When subjected to frictional damage, the non-rigid cut-resistant yarn exhibits multi-angle cross-interaction and a multi-layered wrapping structure. This allows fibers in one direction or angle to be damaged during friction, while the fiber structure in other directions and angles remains intact. Furthermore, the multi-layered structure causes the outermost fibers to break first, while the inner wrapping structure remains intact, thus giving the non-rigid cut-resistant yarn good abrasion resistance. Additionally, the wearability of the non-rigid cut-resistant yarn is improved, making it suitable for use in skin-friendly fabrics. Figure 18 As shown, the fabric of the product woven with non-rigid cut-resistant yarn has a thickness of 0.86 mm, a weave density of 32 rows / 5 cm in the warp and 38 columns / 5 cm in the weft. Under the test conditions of EN388:2016 standard, the product's abrasion resistance reaches level 4 and its cut resistance reaches level C.

[0079] Application Example 2

[0080] like Figures 19 to 22 As shown, this application example relates to a soft, skin-friendly, non-rigid cut-resistant yarn with a reinforcing section 6 design. The non-rigid cut-resistant yarn is composed of two parts, a first yarn body 100 and a second yarn body 200, through a composite structure design. The second yarn body 200 serves as the main body and is wrapped around the first yarn body 100. At the reinforcing section 6, the first yarn body 100 is tightly wrapped and the wrapping angle is increased.

[0081] The first yarn body 100 has a first inner core 1 of ultra-high molecular weight polyethylene and an outer sheath 2 of 75D polyester fiber wrapped around it. The second yarn body segment 10 includes two second wrapping segments 8, namely, the first outer sheath 2 has a 20cm tight wrapping and a 30cm loose wrapping interval. The wrapping density of the tight wrapping part is 1200 fibers / m, and the wrapping density of the loose wrapping part is 750 fibers / m. The twist direction is S twist.

[0082] The wrapping density of the middle layer 4 of the second yarn body 200 is 400 strands / m; the second outer sheath layer 5 has alternating tight and loose wrapping with random wrapping density, ranging from 200 to 1000 strands / m.

[0083] In this application example, the design of the reinforcing section 6 is achieved by controlling the wrapping state of the first yarn 100 around the second yarn 200. At the reinforcing section 6, the first yarn 100 is tightly wrapped with a large wrapping angle, exhibiting a significant structural difference from other locations. The wrapping density of the reinforcing section 6 is 1150 strands / m, while the wrapping density at other locations is 380 strands / m. The structural design of the reinforcing section 6 of the non-rigid cut-resistant yarn, after weaving, creates a reinforced area on the product, providing focused protection for areas such as the wrist, elbow, and heart. The product weaving does not require complex fabric structure design, nor does it need to employ layering or coating processes to enhance cut resistance, achieving a one-piece molding process. This non-rigid cut-resistant yarn not only enhances the surface texture of the yarn, increasing the friction between the yarn and the blade, thus consuming more energy and enhancing cut resistance; it also increases the cohesion and unity between the yarns, improving the strength utilization rate of the non-rigid cut-resistant yarn and reducing cutting force. This non-rigid cut-resistant yarn retains its structural relationship between fibers even when subjected to frictional damage, giving it good abrasion resistance. Furthermore, its wearability is improved, making it suitable for use in fabrics that come into close contact with the skin. For example... Figure 22 As shown, the fabric of the product woven with non-rigid cut-resistant yarn has a thickness of 1.05mm, a weave density of 30 rows / 5cm in the warp and 45 columns / 5cm in the weft. Under the test conditions of EN388:2016 standard, the product's abrasion resistance reaches level 4 and its cut resistance reaches level D.

[0084] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A non-rigid anti-cut yarn, characterized in that: It includes a first yarn body and a second yarn body, the second yarn body is twisted, the first yarn body wraps around the second yarn body and the first yarn body is in contact with the second yarn body; The first yarn body includes a first inner core and a first outer sheath layer. The first inner core is twisted and includes a plurality of first inner monofilaments. The first outer sheath layer includes a first bonding portion and a first fluffy portion. Both the first bonding portion and the first fluffy portion include a plurality of first outer monofilaments. The first bonding portion is wrapped around the outside of the first inner core and in contact with the first inner core. The first fluffy portion is wrapped around the outside of the first bonding portion and there is a gap between the first bonding portion and the first fluffy portion. The second yarn body includes a second inner core, a middle layer, and a second outer sheath layer. The second inner core is twisted and includes a plurality of second inner monofilaments. The middle layer includes a plurality of middle monofilaments. The second outer sheath layer includes a second bonding portion and a second fluffy portion. Both the second bonding portion and the second fluffy portion include a plurality of second outer monofilaments. The middle layer wraps around the outside of the second inner core and is in contact with the second inner core. The second bonding portion wraps around the outside of the second inner core, or wraps around the outside of the middle layer, or wraps around the outside of both the second inner core and the middle layer. The second bonding portion is in contact with the second inner core, or the second bonding portion is in contact with the middle layer, or the second bonding portion is in contact with both the second inner core and the middle layer. The second fluffy portion is wrapped around the outside of the second bonding portion, and there is a gap between the second bonding portion and the second fluffy portion. The first inner core, the second inner core, and the intermediate layer are all made of ultra-high molecular weight polyethylene, and the first outer sheath layer and the second outer sheath layer are both made of polyester fiber; The non-rigid anti-cut yarn is provided with a reinforcing section, and the wrapping density of the first yarn in the reinforcing section is greater than the wrapping density of the first yarn at other positions.

2. The non-rigid anti-cut yarn according to claim 1, characterized in that: The wrapping density of the first yarn body is 100-1500 strands / m.

3. The non-rigid anti-cut yarn according to claim 1, characterized in that: The wrapping density of the first outer sheath layer is 200-1600 particles / m; the wrapping density of the second outer sheath layer is 200-1600 particles / m.

4. The non-rigid anti-cut yarn according to claim 1, characterized in that: The first yarn body includes a plurality of first yarn body segments arranged in sequence, and each first yarn body segment includes a plurality of first wrapping segments arranged in sequence. The wrapping density of the first outer sheath layer of each first wrapping segment increases sequentially from one end of the first yarn body segment to the other end of the first yarn body segment.

5. The non-rigid anti-cut yarn according to claim 1, characterized in that: The wrapping direction of the intermediate layer is the same as or opposite to the wrapping direction of the second outer sheath layer.

6. The non-rigid anti-cut yarn according to claim 1, characterized in that: The wrapping density of the intermediate layer is 250-500 pieces / m.

7. The non-rigid anti-cut yarn according to claim 1, characterized in that: The second yarn body includes a plurality of second yarn body segments arranged in sequence, and each second yarn body segment includes a plurality of second wrapping segments arranged in sequence. The wrapping density of the intermediate layer of each second wrapping segment increases sequentially from one end of the second yarn body segment to the other end of the second yarn body segment, and the wrapping density of the second outer sheath layer of each second wrapping segment increases sequentially from one end of the second yarn body segment to the other end of the second yarn body segment.

8. The non-rigid anti-cut yarn according to claim 1, characterized in that: The intermediate layer and the second outer sheath are arranged in a spaced-out side-by-side, closely side-by-side, fully overlapped, or partially overlapped state; When the intermediate layer and the second outer sheath are arranged side by side with intervals, the wrapping angle of the intermediate layer is the same as that of the second outer sheath, the wrapping density of the intermediate layer is the same as that of the second outer sheath, the intermediate layer and the second bonding portion are both wrapped around the outside of the second inner core and both the intermediate layer and the second bonding portion are in contact with the second inner core, and there is a gap between the intermediate layer and the second bonding portion; When the intermediate layer and the second outer sheath are arranged close together, the wrapping angle of the intermediate layer is the same as that of the second outer sheath, the wrapping density of the intermediate layer is the same as that of the second outer sheath, the intermediate layer and the second bonding portion are both wrapped around the outside of the second inner core and both the intermediate layer and the second bonding portion are in contact with the second inner core, the intermediate layer and the second bonding portion are alternately wrapped and one side of the intermediate layer is in contact with one side of the second bonding portion; When the intermediate layer and the second outer sheath are fully overlapped, the second adhesive portion wraps around the outside of the intermediate layer and contacts the intermediate layer, and the second outer sheath achieves full coverage of the intermediate layer; When the intermediate layer and the second outer sheath are in a semi-overlapping state, the wrapping angle of the intermediate layer is smaller than the wrapping angle of the second outer sheath, the wrapping density of the intermediate layer is smaller than the wrapping density of the second outer sheath, the intermediate layer includes a shielding portion and an exposed portion, the second adhesive portion is wrapped around the outside of the shielding portion, and the second adhesive portion is in contact with the shielding portion.

9. The non-rigid anti-cut yarn according to claim 1, characterized in that: The ultra-high molecular weight polyethylene has a fineness of 100-200D, and the polyester fiber has a fineness of 70-150D.

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