Multifunctional knapsack fabric

Abstract

The utility model discloses a multifunctional knapsack fabric which sequentially comprises a base layer, a fabric layer, a fabric layer and a fabric layer from top to bottom, the base layer is made of nylon fibers or polyester fibers, and the surface density of the base layer is 40g / m < 2 >-150g / m < 2 >; the reinforced anti-cutting layer is formed by crosswise laying at least two layers of high-performance fibers, and the surface density of the reinforced anti-cutting layer is 20g / m < 2 >-100g / m < 2 >; the waterproof layer is made of a resin film, and the surface density of the waterproof layer is 4g / m < 2 >-20g / m < 2 >; the base layer and the reinforced anti-cutting layer are bonded and compounded through a first adhesive layer, and the reinforced anti-cutting layer and the waterproof layer are bonded and compounded through a second adhesive layer. According to the scheme, the base layer is arranged to play a wear-resistant role and a water-repellent role, the reinforced anti-cutting layer is arranged to enable the knapsack to have puncture-resistant, anti-cutting and anti-theft functions, the waterproof layer has a waterproof function and also has certain air permeability and moisture permeability, and the surface density of the base layer, the reinforced anti-cutting layer and the waterproof layer is limited to enable the knapsack to have a waterproof function. The knapsack fabric is light, durable, waterproof and cut-resistant.

Description

Technical Field

[0001] This utility model relates to the field of backpack fabrics, and more particularly to a multifunctional backpack fabric. Background Technology

[0002] With the development of the times, the popularization of outdoor sports, and the advancement of fabric technology, people's requirements for backpacks are getting higher and higher. From the original large capacity and wear resistance, to waterproof and rainproof, and then to lightweight, high strength, and tear resistance, backpack fabrics are constantly being updated and upgraded, but few fabrics can combine all of the above functions. Among the commonly used backpack fabrics today, in order to increase the wear resistance, tear resistance, tensile strength, and extend the service life of the backpack fabric, relatively heavy fabrics are usually used. However, for outdoor backpacks, the weight is too heavy and not lightweight enough. On the other hand, if thinner fabrics are used, the backpack will not be able to bear enough weight, the strength will not be enough, and the durability will be poor. Moreover, existing backpack fabrics usually use hydrophobic treatments such as polyurethane coating and silicone treatment to give the fabric waterproof function. During long-term use, the coating is easy to peel off and the silicone oil is easy to evaporate, resulting in a decrease in the waterproofness of the backpack. In addition, in outdoor sports, this kind of backpack fabric is easily torn by sharp objects and does not have a cut protection function. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a multifunctional backpack fabric. By setting an enhanced cut-resistant layer, the cut resistance of the backpack fabric is improved, and by using a resin film as a waterproof layer, the waterproof performance of the backpack fabric is increased, so that the backpack fabric has the functions of being lightweight, durable, waterproof and cut-resistant.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multi-functional backpack fabric, comprising, from top to bottom:

[0006] The base layer is made of nylon or polyester fiber, with a surface density of 40 g / m². 2 -150 g / m 2 ;

[0007] The reinforced cut-resistant layer is composed of at least two layers of high-performance fibers cross-laid together, with a surface density of 20 g / m². 2 -100 g / m 2 ;

[0008] The waterproof layer is made of resin film, and its surface density is 4 g / m³. 2 -20 g / m 2 ;

[0009] The base layer and the reinforced cut-resistant layer are bonded together by a first adhesive layer, and the reinforced cut-resistant layer and the waterproof layer are bonded together by a second adhesive layer.

[0010] Preferably, the fineness of nylon or polyester fibers is 20D-400D.

[0011] Preferably, the fabric structure of the base layer is one of the following: knitted structure, woven structure, non-woven structure, composite structure, and hybrid structure.

[0012] As a preferred option, the high-performance fiber is ultra-high molecular weight polyethylene fiber.

[0013] Preferably, the fineness of the high-performance fiber is 200D-1600D. Preferably, the areal density of a single layer of high-performance fiber is 10 g / m². 2 -40 g / m 2 .

[0014] Preferably, the second adhesive layer is a thermoplastic polyurethane resin.

[0015] Preferably, the single-layer high-performance fiber in the reinforced cut-resistant layer is pre-impregnated and laminated with the second adhesive layer. Preferably, the first adhesive layer is a hot-melt adhesive film, and the base layer and the reinforced cut-resistant layer are hot-pressed together.

[0016] Alternatively, the first adhesive layer is a thermoplastic polyurethane resin, and the base layer is pre-impregnated and laminated with the first adhesive layer.

[0017] Preferably, the resin film is a polyurethane film.

[0018] This utility model, by adopting the above technical solutions, has the following beneficial effects: In this utility model, the base layer made of nylon or polyester fiber gives the backpack a good feel and appearance, and plays a role in wear resistance and water repellency. The reinforced cut-resistant layer made of multiple layers of high-performance fibers enhances the backpack's load-bearing capacity, tear resistance, and durability, and also gives the backpack anti-puncture, anti-cut, and anti-theft functions. By using a resin film as a waterproof layer, the waterproof layer has a waterproof function while also having a certain degree of breathability and moisture permeability. By limiting the areal density of the base layer, the reinforced cut-resistant layer, and the waterproof layer, the backpack fabric has the functions of being lightweight, durable, waterproof, and cut-resistant. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of this utility model. Reference numerals:

[0020] 1. Base layer; 2. Reinforcing cut-resistant layer; 3. Waterproof layer; 4. First adhesive layer; 5. Second adhesive layer. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] As shown in Figure 1, this utility model discloses a multifunctional backpack fabric, which includes, from top to bottom: a base layer 1, made of nylon fiber or polyester fiber, with a surface density of 40 g / m². 2 -150 g / m 2 ;

[0026] The reinforced cut-resistant layer 2 is composed of at least two layers of high-performance fibers cross-laid together, and has a surface density of 20 g / m². 2 -100 g / m 2 ;

[0027] Waterproof layer 3 is made of resin film, and its surface density is 4 g / m³. 2 -20 g / m 2 ;

[0028] The base layer 1 and the reinforced cut-resistant layer 2 are bonded together by a first adhesive layer 4, and the reinforced cut-resistant layer 2 and the waterproof layer 3 are bonded together by a second adhesive layer 5.

[0029] In this invention, a base layer 1 made of nylon or polyester fiber is provided to give the backpack a good feel and appearance, and to provide wear resistance and water repellency. A reinforced cut-resistant layer 2 made of multiple layers of high-performance fibers is provided to improve the backpack's load-bearing capacity, tear resistance, and durability, and to give the backpack puncture-proof, cut-proof, and anti-theft functions. A resin film is used as a waterproof layer 3, which provides waterproofing while also being breathable and moisture-permeable. By limiting the areal density of the base layer 1, the reinforced cut-resistant layer 2, and the waterproof layer 3, the backpack fabric is made lightweight, durable, waterproof, and cut-resistant.

[0030] In this design, the nylon or polyester fibers in the base layer 1 have a fiber fineness of 20D-400D. The fabric structure of the base layer 1 can be one of the following: knitted, woven, non-woven, composite, or mixed. The fabric of the base layer 1 can be untreated or treated with hydrophobic agents such as silicone oil or fluorinated waterproofing agents to further improve its waterproofness.

[0031] In this design, the high-performance fiber in the reinforced cut-resistant layer 2 is ultra-high molecular weight polyethylene fiber. This high-performance fiber possesses high strength, high modulus, and high shear strength. The fiber fineness of the high-performance fiber is 200D-1600D, and the areal density of a single layer of high-performance fiber is 10 g / m². 2 -40 g / m 2 The layup angles of the high-performance fibers in each layer are 0° and 90°.

[0032] In this design, the resin membrane in waterproof layer 3 is a polyurethane membrane. The resin membrane can be a non-porous membrane, a waterproof and breathable microporous membrane, a two-component membrane, or other resin membranes with waterproof properties.

[0033] To ensure good adhesion between the layers, the second adhesive layer 5 is made of thermoplastic polyurethane resin. Furthermore, the second adhesive layer 5 also has a waterproof function, further enhancing the waterproof performance of the backpack fabric.

[0034] For ease of production, generally speaking, the single-layer high-performance fiber in the reinforced cut-resistant layer 2 is pre-impregnated and compounded with the second adhesive layer 5 to form a high-performance fiber unidirectional tape.

[0035] The first adhesive layer 4 is a hot melt adhesive film, which is hot-pressed together with the base layer 1 and the reinforcing cut-resistant layer 2; or, the first adhesive layer 4 is a thermoplastic polyurethane resin, which can be pre-impregnated and laminated with the base layer 1 and the first adhesive layer 4 for ease of production.

[0036] The lamination process for this multi-functional backpack fabric includes the following steps:

[0037] 1. The high-performance fiber filaments in the reinforced anti-cut layer 2 are fully extended laterally to form a uniform and very thin single layer of high-performance fiber filaments, and the second adhesive layer 5 is pre-impregnated.

[0038] 2. The high-performance fiber filaments of each layer are cross-laid and combined with the waterproof layer 3 through the second adhesive layer 5 to form an initial composite structure;

[0039] 3. Further composite the base layer 1 with the initial composite structure in step 2 using the first adhesive layer 4. Specifically, when the first adhesive layer 4 is a hot melt adhesive film, the first adhesive layer 3 is laid between the base layer 1 and the initial composite structure, and then hot-pressed using a hot press roller and a flatbed hot press. When the first adhesive layer 4 is a thermoplastic polyurethane resin, the base layer 1 is pre-impregnated with the first adhesive layer 4, and then the base layer 1 pre-impregnated with the first adhesive layer is composited with the initial composite structure.

[0040] Example 1:

[0041] A multifunctional backpack fabric includes: a base layer 1 made of polyester fiber with a surface density of 50 g / m2; a reinforced cut-resistant layer 2 made of two layers of ultra-high molecular weight polyethylene fiber cross-laid together with a surface density of 30 g / m2; and a waterproof layer 3 made of polyurethane film with a surface density of 10 g / m2. The base layer 1 and the reinforced cut-resistant layer 2 are bonded together with thermoplastic polyurethane resin with a coating amount of 10 g / m2, and the reinforced cut-resistant layer 2 and the waterproof layer 3 are bonded together with thermoplastic polyurethane resin with a coating amount of 10 g / m2.

[0042] Comparative Example 1:

[0043] This comparison uses commercially available polyester fabric used to make backpacks.

[0044] Comparative Example 2:

[0045] This comparative example uses commercially available nylon fabric used to make backpacks.

[0046] The properties of the fabrics in Example 1 and Comparative Examples 1-2 were tested, and the reference standards were HG / T2580 "Determination of tensile strength and elongation at break of rubber or plastic coated fabrics", GB / T 3917.2 "Textiles - Tear properties of fabrics - Part 2: Determination of tear strength of trouser specimens (single seam)", HG / T 2528 "Determination of water permeability of rubber or plastic coated fabrics" and GB / T 19976-2005 "Determination of bursting strength of textiles - steel ball method".

[0047] The test results of various properties of the fabrics in Example 1 and Comparative Examples 1-2 are shown in Table 1 below:

[0048] Table 1: Test results of various properties of the fabrics in Example 1 and Comparative Examples 1-2

[0049] Group <![CDATA[Areal density (g / m 2 ).]]> Thickness (mm) Tensile strength (N / 5cm) Tear strength (N) Water resistance (mm) Breakthrough force (N) Comparative Example 1 250 0.7 2500 400 3000 330 Comparative Example 2 300 0.8 3000 450 4000 400 Example 1 110 0.35 5000 900 13000 1000

[0050] Test results show that, compared with traditional polyester and nylon fabrics used for backpack making, the backpack fabric provided by this solution has a lower surface density and thinner thickness, but its tensile strength is twice that of traditional fabrics, its tear strength is twice that of traditional fabrics, its waterproofness is 3-4 times that of traditional fabrics, and its bursting strength is 3 times that of traditional fabrics. It is also lightweight, durable, waterproof and cut-resistant, making it especially suitable for making backpacks for outdoor sports.

[0051] All features described in the specification, appended claims and drawings, whether individually or in any combination thereof, are essential features of this utility model.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "one implementation," "specific implementation," "other implementation," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment, implementation, or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described above can also be combined in any suitable manner in one or more embodiments, implementations, or examples. The technical solutions described in this utility model also include technical solutions formed by any one or more specific features, structures, materials, or characteristics described above, either individually or in combination.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, alterations, deletions of some features, additions of features, or recombinations of features to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the innovative principles of the present invention shall still fall within the scope of the technical solutions of the present invention.

Claims

1. A multifunctional backpack fabric, characterized in that, From top to bottom, they include: The base layer (1) is made of nylon or polyester fiber, and the areal density of the base layer (1) is 40 g / m³. 2 -150 g / m 2 ; The reinforced cut-resistant layer (2) is made of at least two layers of high-performance fibers cross-laid together, and the areal density of the reinforced cut-resistant layer (2) is 20 g / m². 2 -100 g / m 2 The high-performance fiber is ultra-high molecular weight polyethylene fiber. The waterproof layer (3) is made of resin film, and the surface density of the waterproof layer (3) is 4 g / m³. 2 -20 g / m 2 ; The base layer (1) and the reinforced cut-resistant layer (2) are bonded together by the first adhesive layer (4), and the reinforced cut-resistant layer (2) and the waterproof layer (3) are bonded together by the second adhesive layer (5).

2. The multifunctional backpack fabric according to claim 1, characterized in that, The fineness of nylon or polyester fibers ranges from 20D to 400D.

3. The multifunctional backpack fabric according to claim 1, characterized in that, The fabric structure of the base layer (1) is one of the following: knitted structure, woven structure, nonwoven structure, composite structure and hybrid structure.

4. The multifunctional backpack fabric according to claim 1, characterized in that, The fineness of high-performance fibers ranges from 200D to 1600D.

5. The multifunctional backpack fabric according to claim 1, characterized in that, The areal density of a single-layer high-performance fiber is 10 g / m². 2 -40 g / m 2 .

6. The multifunctional backpack fabric according to claim 1, characterized in that, The second adhesive layer (5) is thermoplastic polyurethane resin.

7. The multifunctional backpack fabric according to claim 6, characterized in that, The single-layer high-performance fiber in the enhanced cut-resistant layer (2) is pre-impregnated and composited with the second adhesive layer (5).

8. The multifunctional backpack fabric according to claim 1, characterized in that, The first adhesive layer (4) is a hot melt adhesive film, and the base layer (1) and the reinforced anti-cut layer (2) are hot-pressed together; Alternatively, the first adhesive layer (4) is a thermoplastic polyurethane resin, and the base layer (1) is pre-impregnated with the first adhesive layer (4).

9. The multifunctional backpack fabric according to claim 1, characterized in that, The resin film is a polyurethane film.

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