High-strength bear bite prevention composite fabric

Abstract

The utility model discloses a high-strength bear bite prevention composite fabric which comprises an ultra-high molecular weight polyethylene layer which comprises four polyethylene non-woven fabric layers and a polyethylene woven fabric layer, and the polyethylene woven fabric layer is arranged on one side of the four polyethylene non-woven fabric layers or clamped in the middle of the four polyethylene non-woven fabric layers; the TPU film layer is arranged on one side of the polyethylene layer, an adhesive layer is arranged between the TPU film layer and the polyethylene layer, and the polyethylene layer, the adhesive layer and the TPU film layer are compounded through hot pressing. In the ultra-high molecular weight polyethylene layer in the scheme, the polyethylene non-woven cloth layer with an excellent anti-puncture effect and the polyethylene woven cloth layer with an excellent anti-tearing effect are adopted, so that the fabric has extremely high anti-tearing and anti-seizure strength, the seizure force of wild animals can be effectively resisted, and high-level protection is provided.

Description

Technical Field

[0001] This utility model relates to the field of protective materials technology, and in particular to a high-strength bear-bite-resistant composite fabric. Background Technology

[0002] With the increasing popularity of outdoor activities, people have higher and higher requirements for outdoor equipment and protective clothing. Especially in high-risk activities such as wilderness exploration and hiking, people often face threats from various wild animals, especially bears. Bears, with their great strength and sharp teeth, are extremely destructive to ordinary fabrics, making them difficult to protect effectively. Among existing protective fabric technologies, for example, patent application CN104921356A discloses a knife-resistant scarf, which can prevent or reduce injuries to the neck from cuts, stabs, cuts, and scratches. However, unlike cuts, stabs, cuts, and scratches, bites involve both piercing and tearing. Bears, for example, have a bite force of over 1000N. Although existing fabrics have a certain degree of resistance to bites, their strength is insufficient. Especially when facing powerful adversaries such as bears, the protective effect of these fabrics is often unsatisfactory and cannot meet the actual needs of outdoor activities. Therefore, how to develop a composite fabric that has both high strength and bite resistance as well as good breathability and abrasion resistance has become an urgent technical problem to be solved in the field of outdoor equipment and protective clothing. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a high-strength bear-bite-resistant composite fabric with extremely high tear resistance and bite resistance.

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

[0005] A high-strength bear-resistant composite fabric, comprising:

[0006] The ultra-high molecular weight polyethylene layer includes four layers of polyethylene non-woven fabric and one layer of polyethylene woven fabric. The four layers of polyethylene non-woven fabric are stacked and hot-pressed at 45° / 90° / 135° / 180°. The polyethylene woven fabric layer is combined with the polyethylene non-woven fabric layer and is placed on one side of the four layers of polyethylene non-woven fabric.

[0007] A TPU film layer is disposed on one side of a polyethylene layer. An adhesive layer is provided between the TPU film layer and the polyethylene layer. The polyethylene layer, the adhesive layer, and the TPU film layer are hot-pressed together. The adhesive layer is a polyurethane adhesive layer.

[0008] Preferably, the basis weight of the polyethylene woven fabric layer is 230-300 gsm, and the warp density is 1.2 times that of the weft density.

[0009] Preferably, the basis weight of the polyethylene nonwoven fabric layer is 80-100 gsm.

[0010] Preferably, the basis weight of the TPU film is 20-50 g / m². 2 .

[0011] Preferably, the TPU film layer has multiple micropores.

[0012] Preferably, the diameter of the micropores is 0.1-0.5 μm, and the distribution density of the micropores is 600-1200 per cm. 2 .

[0013] Preferably, the TPU film layer has a plurality of resin microspheres evenly distributed on it, and the diameter of the resin microspheres is 1-3μm.

[0014] Preferably, the resin microspheres are polyurethane resin microspheres.

[0015] This utility model, by adopting the above technical solution, has the following beneficial effects:

[0016] 1. In the ultra-high molecular weight polyethylene layer of this solution, a polyethylene non-woven fabric layer with excellent puncture resistance and a polyethylene woven fabric layer with excellent tear resistance are used, so that the fabric has extremely high tear resistance and bite resistance, which can effectively resist the bite force of wild animals and provide a high level of protection.

[0017] 2. In this solution, the TPU film layer is microporous, which greatly enhances the breathability of the fabric, ensuring that air can be discharged through the fabric and keeping the wearer dry and comfortable. By adding resin microbeads, the breathability of the fabric is further improved, while maintaining good protective performance and structural strength, making it comfortable to wear. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Example 1.

[0019] Figure label:

[0020] 1. Non-woven polyethylene fabric layer; 2. Woven polyethylene fabric layer; 3. TPU film layer; 4. 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] In the description of this utility model, unless otherwise stated, "multiple" means two or more, unless otherwise explicitly defined.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] 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.

[0026] like Figure 1 As shown, this utility model discloses a high-strength bear-bite resistant composite fabric, comprising:

[0027] The ultra-high molecular weight polyethylene layer includes four layers of polyethylene non-woven fabric 1 and one layer of polyethylene woven fabric 2. The four layers of polyethylene non-woven fabric 1 are stacked and hot-pressed at 45° / 90° / 135° / 180°. The polyethylene woven fabric 2 is composited with the polyethylene non-woven fabric 1 and is disposed on one side of the four layers of polyethylene non-woven fabric 1.

[0028] TPU film layer 3 is disposed on one side of ultra-high molecular weight polyethylene layer. Adhesive layer 4 is provided between TPU film layer 3 and polyethylene layer. The polyethylene layer, adhesive layer 4 and TPU film layer 3 are hot-pressed together. Adhesive layer 4 is polyurethane adhesive layer.

[0029] In applications of bear bite protection, a bear bite involves piercing and then tearing. Therefore, in this solution, the ultra-high molecular weight polyethylene layer is composed of a polyethylene non-woven fabric layer 1 with excellent puncture resistance and a polyethylene woven fabric layer 2 with excellent tear resistance. This gives the fabric extremely high tear and bite resistance, effectively resisting the bite force of wild animals and providing a high level of protection.

[0030] The weight of the polyethylene woven fabric layer 2 is 230-300 gsm. Unlike most applications where the force on the fabric is mainly along the warp direction, in bear bite protection applications, considering that the biting force of a bear is usually perpendicular to the fabric, the strength of the warp direction is particularly important. In this invention, the warp density of the polyethylene woven fabric layer 2 is 1.2 times that of the weft density.

[0031] The weight of the polyethylene non-woven fabric layer 1 is 80-100 gsm. The four layers of polyethylene non-woven fabric layer 1 are laminated by hot pressing at 45° / 90° / 135° / 180° or 30° / 60° / 90° / 120°.

[0032] The basis weight of TPU film layer 3 is 20-50 g / m³. 2 The TPU film layer 3 has multiple micropores. These micropores can be formed by laser drilling or chemical etching. This microporous treatment of the TPU film layer 3 significantly enhances the fabric's breathability, ensuring that air can escape through the fabric and keep the wearer dry and comfortable. Specifically, the diameter of the micropores is 0.1-0.5 μm, and the distribution density of the micropores is 600-1200 per cm³. 2 .

[0033] To further enhance the fabric's breathability, the TPU membrane layer 3 is uniformly covered with multiple resin microspheres, each with a diameter of 1-3 μm. Specifically, these resin microspheres are polyurethane resin microspheres. Polyurethane resin microspheres possess excellent elasticity, abrasion resistance, and breathability, and are compatible with the TPU membrane layer 3. This significantly improves the breathability of the composite fabric while maintaining high protective performance, achieving optimal overall performance by combining bear bite protection, breathability, and durability. Although this design incorporates breathability, the fabric still provides good waterproof performance, with a water resistance of no less than 3000 mm water column in hydrostatic pressure tests. Therefore, it provides reliable protection in various environments. Furthermore, due to its good breathability, wearers will not feel overly stuffy under high temperatures or high-intensity activities, thus improving wearing comfort.

[0034] In this invention, the weight of the adhesive layer 4 is approximately 10% to 15% of the total weight of the fabric.

[0035] Example 1:

[0036] In this embodiment, a high-strength bear-bite resistant composite fabric includes:

[0037] The ultra-high molecular weight polyethylene layer includes four layers of polyethylene non-woven fabric 1 and one layer of polyethylene woven fabric 2, with the polyethylene woven fabric 2 disposed on one side of the four layers of polyethylene non-woven fabric 1.

[0038] TPU film layer 3 is disposed on one side of ultra-high molecular weight polyethylene layer, and adhesive layer 4 is provided between TPU film layer 3 and polyethylene layer. The polyethylene layer, adhesive layer 4 and TPU film layer 3 are hot-pressed together.

[0039] In the proposed polyethylene nonwoven fabric layer 1, the four-layer polyethylene nonwoven fabric layer 1 has a basis weight of 320 gsm, and the single-layer polyethylene nonwoven fabric layer 1 has a basis weight of 80 gsm. The four-layer polyethylene nonwoven fabric layer 1 is laminated by hot pressing at 45° / 90° / 135° / 180°. The polyethylene woven fabric layer 2 has a basis weight of 230 gsm. The TPU film is designed to have a basis weight of 20 g / m³. 2 Adhesive layer 4 is made of polyurethane adhesive with a designed basis weight of 30 g / m³. 2 The total weight of the composite fabric is 600 gsm.

[0040] Example 2:

[0041] In this embodiment, a high-strength bear-bite resistant composite fabric includes:

[0042] The ultra-high molecular weight polyethylene layer includes four layers of polyethylene non-woven fabric 1 and one layer of polyethylene woven fabric 2, with the polyethylene woven fabric 2 disposed on one side of the four layers of polyethylene non-woven fabric 1.

[0043] TPU film layer 3 is disposed on one side of ultra-high molecular weight polyethylene layer, and adhesive layer 4 is provided between TPU film layer 3 and polyethylene layer. The polyethylene layer, adhesive layer 4 and TPU film layer 3 are hot-pressed together.

[0044] In the proposed polyethylene nonwoven fabric layer 1, the four-layer polyethylene nonwoven fabric layer 1 has a basis weight of 360 gsm, and the single-layer polyethylene nonwoven fabric layer 1 has a basis weight of 90 gsm. The four-layer polyethylene nonwoven fabric layer 1 is laminated by hot pressing at 45° / 90° / 135° / 180°. The polyethylene woven fabric layer 2 has a basis weight of 270 gsm, and the warp density is 1.2 times the weft density. The TPU film is designed to have a basis weight of 35 g / m². 2 Adhesive layer 4 is made of polyurethane adhesive with a designed basis weight of 30 g / m³. 2The total weight of the composite fabric is 695 gsm.

[0045] Example 3:

[0046] In this embodiment, a high-strength bear-bite resistant composite fabric includes:

[0047] The ultra-high molecular weight polyethylene layer includes four layers of polyethylene non-woven fabric 1 and one layer of polyethylene woven fabric 2, with the polyethylene woven fabric 2 disposed on one side of the four layers of polyethylene non-woven fabric 1.

[0048] TPU film layer 3 is disposed on one side of ultra-high molecular weight polyethylene layer, and adhesive layer 4 is provided between TPU film layer 3 and polyethylene layer. The polyethylene layer, adhesive layer 4 and TPU film layer 3 are hot-pressed together.

[0049] In the proposed polyethylene nonwoven fabric layer 1, the four-layer polyethylene nonwoven fabric layer 1 has a basis weight of 400 gsm, and the single-layer polyethylene nonwoven fabric layer 1 has a basis weight of 100 gsm. The four-layer polyethylene nonwoven fabric layer 1 is laminated by hot pressing at 45° / 90° / 135° / 180°. The polyethylene woven fabric layer 2 has a basis weight of 300 gsm, and the warp density is 1.2 times the weft density. The TPU film is designed to have a basis weight of 50 g / m². 2 Adhesive layer 4 is made of polyurethane adhesive with a designed basis weight of 30 g / m³. 2 The total weight of the composite fabric is 780 gsm.

[0050] Comparative Example 1:

[0051] Commercially available traditional machine-woven anti-bite fabric.

[0052] Performance testing:

[0053] Detection method:

[0054] Tear strength: Tested according to "Textiles - Tear Properties of Fabrics (GB / T 3917.1—2009)";

[0055] Puncture strength: Tested according to the standard "Determination of puncture strength of textiles (GB / T 23318-2009)";

[0056] High temperature resistance: tested using differential scanning calorimetry (DSC).

[0057] Abrasion resistance: Tested according to GB / T 21196.2-2007 Textiles - Martindale method - Determination of abrasion resistance of fabrics - Part 2: Determination of specimen breakage;

[0058] Dimensional stability: Tested according to GB / T 8628-2013 Textiles - Preparation, marking and measurement of fabric samples and garments for determination of dimensional changes;

[0059] Air permeability: Tested according to GB / T 5453-1997 Determination of air permeability of textile fabrics.

[0060] The fabrics in Example 1 and Comparative Example 1 were tested using the above method, and the test results are shown in Table 1 below:

[0061] Table 1: Fabric performance test results in Example 1 and Comparative Example 1

[0062]

[0063] All features described in the specification, appended claims and drawings, whether individually or in any combination thereof, are essential features of this utility model.

[0064] 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.

[0065] 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 high-strength bear-bite resistant composite fabric, characterized in that, include: The ultra-high molecular weight polyethylene layer includes four layers of polyethylene non-woven fabric (1) and one layer of polyethylene woven fabric (2). The four layers of polyethylene non-woven fabric (1) are stacked and hot-pressed at 45° / 90° / 135° / 180°. The polyethylene woven fabric (2) is combined with the polyethylene non-woven fabric (1). The polyethylene woven fabric (2) is set on one side of the four layers of polyethylene non-woven fabric (1). The TPU film layer (3) is disposed on one side of the ultra-high molecular weight polyethylene layer. An adhesive layer (4) is provided between the TPU film layer (3) and the polyethylene layer. The polyethylene layer, the adhesive layer (4) and the TPU film layer (3) are hot-pressed together. The adhesive layer (4) is a polyurethane adhesive layer.

2. The high-strength bear-bite resistant composite fabric according to claim 1, characterized in that, The basis weight of the polyethylene woven fabric layer (2) is 230-300 gsm, and the warp density is 1.2 times that of the weft density.

3. The high-strength bear-bite resistant composite fabric according to claim 1, characterized in that, The basis weight of the polyethylene nonwoven fabric layer (1) is 80-100 gsm.

4. The high-strength bear-bite resistant composite fabric according to claim 1, characterized in that, The basis weight of the TPU film (3) is 20-50 g / m³. 2 .

5. The high-strength bear-bite resistant composite fabric according to claim 1, characterized in that, Multiple micropores are formed on the TPU film layer (3).

6. The high-strength bear-bite resistant composite fabric according to claim 5, characterized in that, The diameter of the micropores is 0.1-0.5 μm, and the distribution density of the micropores is 600-1200 per cm³. 2 .

7. The high-strength bear-bite resistant composite fabric according to claim 1, characterized in that, The TPU film layer (3) has a plurality of resin microspheres evenly distributed on it, and the diameter of the resin microspheres is 1-3μm.

8. The high-strength bear-bite resistant composite fabric according to claim 7, characterized in that, The resin microspheres are polyurethane resin microspheres.

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