Stab-resistant fabric with cross-knit scale-like structure and method of making same

The flat-knitted scaly anti-stab structural fabric woven by a four-needle-bed computerized flat knitting machine solves the problems of complex preparation, thickness and insufficient anti-stab performance of existing anti-stab materials. It achieves a lightweight, high-strength and soft anti-stab effect, and supports the detachable and replaceable anti-stab blocks, making it suitable for protective equipment.

CN119083006BActive Publication Date: 2025-10-21JIANGNAN UNIV
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Patent Information

Application Number
CN202411289875.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-14
Publication Date
2025-10-21
Estimated Expiration
2044-09-14

AI Technical Summary

Technical Problem

Existing stab-proof materials have problems such as complex preparation process, high cost, heavy products, limited stab-proof performance, difficulty in weaving, and easy falling off of stab-proof blocks. They are difficult to meet the protection needs of light weight, high strength, softness and comfort.

Method used

The flat-knitted scaly anti-stab structure fabric is woven in one go on a four-needle-bed computerized flat knitting machine. Through the regularly arranged and overlapping hollow anti-stab structures, a bag-like hollow interlayer is formed between the surface layer, the middle layer and the bottom layer. The anti-stab blocks can be inserted into the interlayer and the edges are locked with elastic thread to prevent curling. The surface layer and the middle layer have different knitting structures and densities, and the anti-stab blocks are removable and replaceable.

Benefits of technology

It achieves light weight, high strength and soft stab-proof performance. The stab-proof block is not easy to fall off, the production efficiency is high, the fabric can be flexibly adjusted, and the stab-proof block can be removed and replaced. It is suitable for protective equipment such as protective vests and sleeves.

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Abstract

The application relates to a transverse knitting scale-shaped anti-puncture structure fabric and a preparation method thereof, and relates to the field of textile materials. The fabric is a regularly arranged and overlapped hollow anti-puncture structure, and the smallest cycle structure unit of the hollow anti-puncture structure comprises a surface layer, a bottom layer and an intermediate layer between the surface layer and the bottom layer; a plurality of three-side connecting single-side opening bag-shaped hollow interlayers are formed between the surface layer and the intermediate layer and between the bottom layer and the intermediate layer through a turning needle action, and anti-puncture blocks are replaceably arranged in the bag-shaped hollow interlayers; wherein the surface layer has an extension part which is located in the direction close to the opening side of the bag-shaped hollow interlayer. The anti-puncture structure fabric is integrally knitted by means of a four-needle bed computerized flat knitting machine, different knitting structures are adopted, the longitudinal row density of the surface layer, the intermediate layer and the bottom layer is changed, the area of the surface layer structure unit is larger than that of the intermediate layer (the bottom layer) structure unit, the anti-puncture blocks can be better attached to the inside of the knitted fabric, and the falling of the anti-puncture blocks is avoided.
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Description

Technical Field

[0001] The present application relates to the technical field of textile materials, and in particular to a horizontally knitted scaly anti-stab structure fabric and a preparation method thereof. Background Art

[0002] With the growing demand for safety and protection, stab-resistant materials are increasingly being used in military, police, personal protection, and other fields. Stab-resistant materials must be lightweight, high-strength, soft, and comfortable to provide effective protection in a variety of harsh environments.

[0003] Stab-resistant materials generally come in three types: hard, semi-rigid, and soft. Hard stab-resistant materials are typically made by laminating metal plates with hard composite materials, making them relatively bulky. Soft stab-resistant materials are mostly laminated and composited with fabrics made from high-performance fibers such as ultra-high molecular weight polyethylene and aramid, resulting in limited protective performance. Therefore, the development of lightweight, flexible stab-resistant materials with excellent protective properties is of great significance.

[0004] Related technologies:

[0005] Patent CN113152107A discloses a method for preparing a nanocomposite gel matrix multilayer fabric stab-resistant composite material. The method involves stirring and mixing chemical reagents, adjusting the temperature to 0-10°C, adding monomers, initiators, and accelerators, and bubbling nitrogen for at least 15 minutes to produce a nanocomposite hydrogel. Multiple layers of aramid fabric impregnated with the nanocomposite hydrogel are then stacked and allowed to stand in a vacuum environment for at least 24 hours to obtain the nanocomposite gel matrix multilayer fabric stab-resistant composite material. However, this preparation process is extremely complex, costly, and the product is relatively thick and heavy, with poor stab-resistant performance.

[0006] Patent CN108859319A discloses a puncture-resistant composite fabric structure that is soft, lightweight, and highly puncture-resistant. The structure consists of a skin-friendly layer, a surface layer, a steel wire braid layer, and a puncture-resistant layer. The puncture-resistant layer is composed of multiple evenly distributed hard protective blocks, which are attached to the steel wire braid layer via high-strength metal fiber filaments or rivets to form the puncture-resistant composite fabric structure. However, while this structure offers some improvement in flexibility, the steel wire braiding method increases the difficulty of weaving and the discomfort of the garment.

[0007] Patent CN118257050A discloses a knitted multi-layer hollow heterogeneous protective structure fabric, which can be filled with stab-proof blocks of different materials. However, since the stab-proof blocks are difficult to fix during human activities, after the stab-proof blocks are inserted into the knitted structure, they are easily dropped when squeezed. Summary of the Invention

[0008] The purpose of this application is to provide a horizontally knitted scale-like stab-proof structural fabric and a preparation method thereof to solve the problems existing in the above-mentioned prior art.

[0009] To achieve the above objectives, the technical solutions adopted in this application are:

[0010] In a first aspect, the present application provides a horizontally knitted scale-like stab-proof structural fabric, which is a regularly arranged and overlapped hollow stab-proof structure, wherein the smallest cyclic organizational unit of the hollow stab-proof structure comprises: a surface layer, a bottom layer, and an intermediate layer located between the surface layer and the bottom layer;

[0011] Between the surface layer and the middle layer, and between the bottom layer and the middle layer, a plurality of bag-shaped hollow interlayers with three sides connected and one side open are formed by needle turning action, and stab-proof blocks are replaceably provided in the bag-shaped hollow interlayers;

[0012] Wherein, the surface layer has an extension portion, and the extension portion is located in a direction close to one side of the opening of the bag-shaped hollow interlayer.

[0013] In a possible implementation, it is knitted and formed in one step by a four-needle-bed fully formed computerized flat knitting machine, and the regularly arranged and overlapping hollow anti-stab structure is formed by flat pressing.

[0014] In a possible implementation, the extension portion is locked by introducing an elastic thread to prevent curling.

[0015] In a possible implementation, the surface layer, the bottom layer, and the middle layer have different knitting structures.

[0016] In a possible implementation, the density of the surface layer is greater than the densities of the bottom layer and the middle layer.

[0017] In a possible implementation, the longitudinal length of the surface layer is greater than the longitudinal lengths of the bottom layer and the middle layer.

[0018] In a possible implementation, the stab-proof block is a hard stab-proof block.

[0019] In a possible implementation, the hard stab-proof block includes at least one of resin, alloy, and metal armor plate.

[0020] In a second aspect, the present application provides a method for preparing a flat-knitted scaly stab-proof structural fabric, which is applicable to the flat-knitted scaly stab-proof structural fabric as described above, and is knitted using a four-needle-bed computerized flat knitting machine, and the method comprises:

[0021] S1, bottom weaving:

[0022] S11, knitting full stitches on the rear lower needle bed and the front lower needle bed in sequence to complete the knitting of the first and second rows;

[0023] S12, completing the bottom knitting by looping the 1st and 2nd rows in sequence a;

[0024] S2, body weaving:

[0025] S21, by cycling the 3rd to 6th horizontal rows m times, obtaining a first stab-proof structural unit having a certain height;

[0026] S22, knitting the 7th to 10th courses, wherein the 7th and 9th courses are knitted with full stitch to form the end portion of the surface layer of the first stab-proof structural unit; and the 8th and 10th courses are knitted with spacer stitch to form the middle layer and bottom layer of the first stab-proof structural unit, respectively;

[0027] S23, knitting the 11th to 17th courses by a partial needle transfer process and a needle bed shifting action to complete the merging of the middle layer and the bottom layer of the first stab-proof structural unit, and the surface layer of the first stab-proof structural unit becomes the middle layer of the second stab-proof structural unit;

[0028] S24, knitting the 18th to 24th rows to form an extension of the second stab-resistant structural unit, and introducing elastic threads into the 18th and 22nd rows for locking;

[0029] S25, looping the 25th to 28th rows n times to determine the height of the second stab-proof structural unit;

[0030] S26, knitting the 29th to 32nd courses, wherein the 29th and 31st courses are knitted with full stitch to form the end portion of the surface layer of the second stab-proof structural unit; and the 30th and 32nd courses are knitted with spacer stitch to form the middle layer and bottom layer of the second stab-proof structural unit, respectively;

[0031] S27, knitting the 11th to 17th courses by a partial needle transfer process and a needle bed shifting action to complete the merging of the middle layer and the bottom layer of the second stab-proof structural unit;

[0032] S28, weaving the 18th to 24th rows again to form an extension of the surface layer of the next stab-proof structural unit, and correspondingly weaving the 3rd to 17th rows to complete the weaving of the next stab-proof unit structure;

[0033] S29, looping steps S24 to S28 several times to complete the knitting of the body part;

[0034] S3, finishing braiding:

[0035] S31, knitting full needles on the rear lower needle bed and the front lower needle bed in sequence, for b times;

[0036] S32. Removably inserting stab-proof blocks into the bag-shaped hollow interlayer to resist stab wounds and cuts, the stab-proof blocks are constrained by the fabric and are stacked and staggered in an array; wherein the bag-shaped hollow interlayer is formed by the surface layer of each stab-proof structural unit woven in step S2 and the middle layer, and between the bottom layer and the middle layer.

[0037] In a possible implementation, in step S2:

[0038] Each stab-proof structural unit is knitted in a way that the loops of the surface layer at the junction of the bag-shaped hollow interlayer formed by the surface layer and the middle layer are located below the loops of the middle layer at the junction, thereby achieving front-to-back connection between the surface layer and the middle layer.

[0039] Each stab-proof structural unit is located at the position where the bag-shaped hollow interlayer formed by the middle layer and the bottom layer intersects on the left and right, through the needle turning process and controlling the loop forming method of the rear needle bed, so that the coil of the middle layer at the connection is located below the coil of the bottom layer.

[0040] The beneficial effects of the technical solution provided by this application include at least:

[0041] 1. The flat-knitted scaly stab-proof structural fabric provided in this application can be knitted in one piece using only a four-needle-bed computerized flat knitting machine. By adopting different knitting structures and changing the wale density of the fabric surface layer, middle layer, and bottom layer, the area of ​​the surface layer structural unit can be made larger than the area of ​​the middle layer (bottom layer) structural unit, thereby allowing the stab-proof blocks to be better attached to the interior of the knitted fabric and prevent the stab-proof blocks from falling off.

[0042] 2. The horizontally knitted scaly stab-proof structural fabric provided in this application has an extension of the surface layer introduced into the fabric surface and an elastic thread added for locking the edge, which can prevent the surface of the stab-proof structural fabric from curling. The preparation process is simple, greatly reducing the time for post-processing, reducing the difficulty of garment making, and improving production efficiency. The fabric has the properties of being soft, flexible, and processable, and can be used in protective vests, protective sleeves and other equipment;

[0043] 3. The horizontally knitted scaly stab-proof structural fabric provided in this application is composed of a plurality of stab-proof structural units. The size of the stab-proof structural units can be adjusted according to actual conditions, and the stab-proof blocks can be flexibly assembled. Since the units are hollow, the protective structural fabric can be woven with lightweight, high-performance yarns for the surface layer and skin-friendly yarns for the middle and bottom layers. In addition, the stab-proof blocks overlap at the top and bottom, and have thin slits on the left and right, which can effectively resist threats such as punctures and cuts.

[0044] 4. The bag-shaped hollow interlayer part of the horizontally woven scale-like stab-proof structural fabric provided in this application can be filled with hard stab-proof blocks such as resin, alloy, metal armor plates, etc. The stab-proof blocks are not completely fixed. Without damaging the main fabric, a damaged stab-proof block can be disassembled and replaced, which greatly improves the service life of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0046] Figure 1 A schematic diagram of the structure of a horizontally knitted scale-shaped stab-proof structural fabric provided in an embodiment of the present application is shown;

[0047] Figure 2 The following is a diagram showing the coil structure of a flat-knitted scale-shaped stab-proof structural fabric provided in an embodiment of the present application; Figure 2 (a) is a front view diagram. Figure 2 (b) is a schematic diagram of the back side. Figure 2 (c) is a side view;

[0048] Figure 3 A schematic diagram of the coil structure of a flat-knitted scaly-shaped stab-proof structural fabric containing stab-proof blocks provided in an embodiment of the present application after the stab-proof blocks are inserted is shown;

[0049] Figure 4 A process diagram of a method for preparing a flat-knitted scaly stab-proof structural fabric provided in an embodiment of the present application is shown; Figure 4 (a) is the weaving process diagram of the bottom part. Figure 4 (b) is the minimum cycle of the main part of the first stab-resistant structural unit, Figure 4 (c) is a weaving process diagram of the connection of the stab-proof structural unit, Figure 4 (d) is a knitting process diagram of the surface extension portion of the stab-proof structural unit, Figure 4 (e) is the minimum cycle of the main part of the second stab-resistant structural unit, Figure 4 (f) is the weaving process diagram at the end. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0051] Among them, the same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings of the present application specification, and the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from specific parts, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application specification, the meaning of "multiple" is two or more.

[0052] First, the nouns appearing in the embodiments are explained:

[0053] Stab-proof structural unit: refers to a basic structural unit of a horizontally woven scaly stab-proof structural fabric, which includes a surface layer, a bottom layer and a middle layer (corresponding to three layers), or it can be said that it is composed of a bag-shaped hollow interlayer formed between the three layers. Stab-proof blocks can be inserted into the stab-proof structural unit to meet the high protection requirements of the clothing.

[0054] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0055] Figure 1 A schematic diagram of the structure of a horizontally knitted scale-shaped stab-proof structural fabric provided in an embodiment of the present application is shown; Figure 2 The following is a diagram showing the coil structure of a flat-knitted scale-shaped stab-proof structural fabric provided in an embodiment of the present application; Figure 2 (a) is a front view diagram. Figure 2 (b) is a schematic diagram of the back side. Figure 2 (c) is a side view;

[0056] Figure 3 A schematic diagram of the coil structure of the horizontally knitted scaly anti-stab structural fabric containing anti-stab blocks provided in an embodiment of the present application is shown after the anti-stab blocks are inserted.

[0057] In detail, the horizontally woven scaly stab-proof structural fabric is a hollow stab-proof structure with regularly arranged and overlapping parts. The minimum circulating organizational unit of the hollow stab-proof structure (i.e., a stab-proof structural unit) includes: a surface layer 1, a bottom layer 3, and an intermediate layer 2 located between the surface layer and the bottom layer; a plurality of bag-shaped hollow interlayers 4 connected on three sides and open on one side are formed between the surface layer 1 and the intermediate layer 2, and between the bottom layer 3 and the intermediate layer 2 by a needle turning action. Several bag-shaped hollow interlayers 4 overlap with each other to form the skeleton of the fabric, and a stab-proof block 5 is replaceably arranged in the bag-shaped hollow interlayer; wherein, the surface layer 1 has an extension portion 11, which is located in a direction close to the opening side of the bag-shaped hollow interlayer 4. The extension portion is locked by introducing an elastic thread to prevent curling and ensure the flatness of the fabric surface.

[0058] In some possible embodiments, the flat-knitted scale-like stab-proof structural fabric is knitted in one step by a four-needle-bed fully formed computerized flat knitting machine, and is flat-pressed to form a regularly arranged and overlapping hollow stab-proof structure.

[0059] In some possible embodiments, the top layer, bottom layer, and middle layer have different knit structures. Due to the knit structure, the top layer, middle layer, and bottom layer have different densities. Because the top layer has a higher density than the middle and bottom layers, the top layer's longitudinal length is greater than the middle and bottom layers. Furthermore, the top layer includes an extension of the fabric top layer, thereby better encapsulating the stab-resistant block.

[0060] In some possible embodiments, the stab-proof block is a hard stab-proof block, which includes at least one of resin, alloy, and metal armor plate.

[0061] Figure 4 A process diagram of a method for preparing a flat-knitted scaly stab-proof structural fabric provided in an embodiment of the present application is shown; Figure 4 (a) is the weaving process diagram of the bottom part. Figure 4 (b) is the minimum cycle of the main part of the first stab-resistant structural unit, Figure 4 (c) is a weaving process diagram of the connection of the stab-proof structural unit, Figure 4 (d) is a knitting process diagram of the surface extension portion of the stab-proof structural unit, Figure 4 (e) is the minimum cycle of the main part of the second stab-resistant structural unit, Figure 4 (f) is the weaving process diagram at the end.

[0062] Specifically, the preparation method of the flat-knitted flaky stab-proof structural fabric is used to weave the flat-knitted flaky stab-proof structural fabric described above. The method uses 600D ultra-high molecular weight polyethylene yarn on a Shima Seiki four-needle bed fully formed computerized flat knitting machine to prepare the flat-knitted flaky stab-proof structural fabric. The type of yarn can be changed according to actual working conditions, such as selecting a comfortable and friendly fiber for the bottom layer and a high-strength and high-modulus yarn for the surface layer to meet actual production needs. The method includes the following steps:

[0063] S1, bottom weaving:

[0064] S11, knitting full stitches on the rear lower needle bed and the front lower needle bed in sequence to complete the knitting of the first and second rows;

[0065] S12, completing the bottom knitting by looping the 1st and 2nd rows in sequence a;

[0066] S2, Body Knitting: The loops from the lower front and lower back needle beds are transferred to the upper back and upper front auxiliary needle beds, respectively, to control the loop formation to complete the multi-layer structure. The top layer is mainly knitted with a 2+2 rib structure on the lower front and upper back auxiliary needle beds, while the middle and bottom layers are mainly knitted with a 1-in-1 structure on the lower back and upper front auxiliary needle beds.

[0067] It is worth mentioning that, at the position where the bag-shaped hollow interlayer formed by the surface layer and the middle layer of each stab-proof structural unit intersects on the left and right, the coils of the surface layer at the connection are located below the coils of the middle layer by changing the local weaving, so as to realize the front-to-back connection between the surface layer and the middle layer; at the position where the bag-shaped hollow interlayer formed by the middle layer and the bottom layer of each stab-proof structural unit intersects on the left and right, the coils of the middle layer at the connection are located below the coils of the bottom layer by using the needle turning process and controlling the loop forming method of the rear needle bed.

[0068] S21, by cycling the 3rd to 6th horizontal rows m times, obtaining a first stab-proof structural unit having a certain height;

[0069] S22, knitting the 7th to 10th courses, wherein the 7th and 9th courses are knitted with full needles to form the end portion of the surface layer of the first stab-proof structural unit; and the 8th and 10th courses are knitted with spacer needles to form the middle layer and bottom layer of the first stab-proof structural unit, respectively;

[0070] S23, knitting the 11th to 17th courses by a partial needle transfer process and a needle bed shifting action to complete the merging of the middle layer and the bottom layer of the first stab-proof structural unit, and the surface layer of the first stab-proof structural unit becomes the middle layer of the second stab-proof structural unit;

[0071] S24, knitting the 18th to 24th rows to form an extension of the second stab-proof structural unit, and introducing elastic threads into the 18th and 22nd rows for locking;

[0072] S25, looping the 25th to 28th rows n times to determine the height of the second stab-proof structural unit;

[0073] S26, knitting the 29th to 32nd courses, wherein the 29th and 31st courses are knitted with full stitch to form the end portion of the surface layer of the second stab-proof structural unit; the 30th and 32nd courses are knitted with spacer stitch to form the middle layer and bottom layer of the second stab-proof structural unit, respectively;

[0074] S27, knitting the 11th to 17th courses by a partial needle transfer process and a needle bed shifting action to complete the merging of the middle layer and the bottom layer of the second stab-proof structural unit;

[0075] S28, weaving the 18th to 24th rows again to form an extension of the surface layer of the next stab-proof structural unit, and correspondingly weaving the 3rd to 17th rows to complete the weaving of the next stab-proof unit structure;

[0076] S29, looping steps S24 to S28 several times to complete the knitting of the body part;

[0077] S3, finishing braiding:

[0078] S31, knitting full needles on the rear lower needle bed and the front lower needle bed in sequence, for b times;

[0079] S32. Removably insert stab-proof blocks into the bag-shaped hollow interlayer to resist stab wounds and cuts. The stab-proof blocks are constrained by the fabric and are stacked and staggered in an array. The bag-shaped hollow interlayer is formed by the surface layer and the middle layer, and the bottom layer and the middle layer of each stab-proof structural unit woven in step S2.

[0080] In this embodiment, the stab-proof block within the bag-shaped hollow interlayer is a carbon fiber rigid resin plate. Its knitted loops tightly wrap the block, and the extended surface of the knitted fabric prevents the block from sliding or falling. Furthermore, the block is not fixed and can be removed and replaced if damaged, making it ideal for workers who are exposed to everyday injuries. Furthermore, this method allows for one-step molding, simplifies post-processing, improves production efficiency, and offers excellent softness, flexibility, and machinability.

[0081] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for preparing a horizontally knitted scaly stab-proof structural fabric, characterized in that: The method adopts a four-needle-bed computerized flat knitting machine for knitting, and the method comprises: S1, bottom weaving: S11, knitting full stitches on the rear lower needle bed and the front lower needle bed in sequence to complete the knitting of the first and second rows; S12, completing the bottom knitting by looping the 1st and 2nd rows in sequence a; S2, body weaving: S21, by cycling the 3rd to 6th horizontal rows m times, obtaining a first stab-proof structural unit having a certain height; S22, knitting the 7th to 10th courses, wherein the 7th and 9th courses are knitted with full stitch to form the end portion of the surface layer of the first stab-proof structural unit; and the 8th and 10th courses are knitted with spacer stitch to form the middle layer and bottom layer of the first stab-proof structural unit, respectively; S23, knitting the 11th to 17th courses by a partial needle transfer process and a needle bed shifting action to complete the merging of the middle layer and the bottom layer of the first stab-proof structural unit, and the surface layer of the first stab-proof structural unit becomes the middle layer of the second stab-proof structural unit; S24, knitting the 18th to 24th rows to form an extension of the second stab-resistant structural unit, and introducing elastic threads into the 18th and 22nd rows for locking; S25, looping the 25th to 28th rows n times to determine the height of the second stab-proof structural unit; S26, knitting the 29th to 32nd courses, wherein the 29th and 31st courses are knitted with full stitch to form the end portion of the surface layer of the second stab-proof structural unit; and the 30th and 32nd courses are knitted with spacer stitch to form the middle layer and bottom layer of the second stab-proof structural unit, respectively; S27, knitting the 11th to 17th courses by a partial needle transfer process and a needle bed shifting action to complete the merging of the middle layer and the bottom layer of the second stab-proof structural unit; S28, weaving the 18th to 24th rows again to form an extension of the surface layer of the next stab-proof structural unit, and correspondingly weaving the 3rd to 17th rows to complete the weaving of the next stab-proof unit structure; S29, looping steps S24 to S28 several times to complete the knitting of the body part; S3, finishing braiding: S31, knitting full needles on the rear lower needle bed and the front lower needle bed in sequence, for b times; S32. Removably inserting stab-proof blocks into the bag-shaped hollow interlayer to resist stab wounds and cuts, the stab-proof blocks are constrained by the fabric and are stacked and staggered in an array; wherein the bag-shaped hollow interlayer is formed by the surface layer of each stab-proof structural unit woven in step S2 and the middle layer, and between the bottom layer and the middle layer.

2. The method for preparing the horizontally knitted scaly stab-proof structural fabric according to claim 1, characterized in that: In the step S2: Each stab-proof structural unit is knitted in a way that the loops of the surface layer at the junction of the bag-shaped hollow interlayer formed by the surface layer and the middle layer are located below the loops of the middle layer at the junction, thereby achieving front-to-back connection between the surface layer and the middle layer. Each stab-proof structural unit is located at the position where the bag-shaped hollow interlayer formed by the middle layer and the bottom layer intersects on the left and right, through the needle turning process and controlling the loop forming method of the rear needle bed, so that the coil of the middle layer at the connection is located below the coil of the bottom layer.

3. The flat knitted scaly stab-proof structural fabric prepared by the method according to any one of claims 1-2, characterized in that: It is a regularly arranged and overlapped hollow stab-proof structure, wherein the smallest cyclic organizational unit of the hollow stab-proof structure comprises: a surface layer, a bottom layer, and an intermediate layer located between the surface layer and the bottom layer; Between the surface layer and the middle layer, and between the bottom layer and the middle layer, a plurality of bag-shaped hollow interlayers with three sides connected and one side open are formed by needle turning action, and stab-proof blocks are replaceably provided in the bag-shaped hollow interlayers; Wherein, the surface layer has an extension portion, and the extension portion is located in a direction close to one side of the opening of the bag-shaped hollow interlayer.

4. The horizontally knitted scale-like stab-proof structural fabric according to claim 3, characterized in that: It is knitted and formed in one step by a four-needle-bed fully formed computerized flat knitting machine, and the regularly arranged and overlapped hollow anti-stab structure is formed by flat pressing.

5. The horizontally knitted scale-like stab-proof structural fabric according to claim 3, characterized in that: The extension portion is locked by introducing an elastic thread to prevent curling.

6. The horizontally knitted scale-like stab-proof structural fabric according to claim 3, characterized in that: The surface layer, the bottom layer, and the middle layer have different knitting structures.

7. The horizontally knitted scale-like stab-proof structural fabric according to claim 6, characterized in that: The surface layer has a density greater than that of the bottom layer and the middle layer.

8. The horizontally knitted scale-like stab-proof structural fabric according to claim 7, characterized in that: The longitudinal length of the surface layer is greater than the longitudinal lengths of the bottom layer and the middle layer.

9. The horizontally knitted scale-like stab-proof structural fabric according to claim 3, characterized in that: The anti-stab block is a hard anti-stab block.

10. The horizontally knitted scale-like stab-proof structural fabric according to claim 9, characterized in that: The hard stab-proof block comprises at least one of resin, alloy and metal armor plate.

Citation Information

Patent Citations

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