Ultrahigh molecular weight polyethylene fiber composite bulletproof plugboard

By using a multi-layered structure design of ultra-high molecular weight polyethylene fiber composite bulletproof inserts, combining metal, polyethylene and ceramic materials, the problem of balancing weight and bulletproof capability is solved, achieving lightweight and highly efficient bulletproof effect, and avoiding the failure of ceramic materials after being hit by a bullet.

CN224215962UActive Publication Date: 2026-05-08SHANDONG LAIWEI NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG LAIWEI NEW MATERIALS CO LTD
Filing Date
2025-05-29
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing bulletproof plates struggle to achieve a satisfactory balance between weight and bulletproof capability. Traditional steel plates are too heavy, limiting tactical mobility, while ceramic materials fail after being hit and cannot withstand secondary hits.

Method used

It adopts ultra-high molecular weight polyethylene fiber composite bulletproof inserts, including metal bulletproof structure, polyethylene structure and ceramic structure, which are fixed by rivets and combined with plastic shell to form a multi-layer structure to balance weight and bulletproof capability. The polyethylene material absorbs the energy of small caliber bullets, and the ceramic structure defends against large caliber bullets.

Benefits of technology

It achieves improved bulletproof capability while reducing weight, prevents ceramic materials from failing after being hit by bullets, and enhances stability and extends service life through rivet fixing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an ultra-high molecular weight polyethylene fiber composite bulletproof flashboard which comprises a protection assembly and a protection assembly wrapped in the protection assembly, the protection assembly comprises a wrapping cloth layer, and a plastic shell is wrapped in the wrapping cloth layer; the protection assembly comprises a metal bulletproof structure, a polyethylene structure is installed on one side of the metal bulletproof structure, a ceramic structure is installed on one side of the polyethylene structure, and the metal bulletproof structure, the polyethylene structure and the ceramic structure are wrapped in a plastic shell. The bulletproof plates made of three different materials are adopted, the thickness of the bulletproof steel plates is reduced, the weight of the steel plates can be effectively reduced, the weight of the device can be reduced again due to the fact that the middle layer is made of the polyethylene material, the ceramic plate is used in the innermost layer, small-caliber bullets cannot directly damage the ceramic plate, and through the combination of various structures, the bulletproof effect is good. And the bulletproof capability and the weight are balanced.
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Description

Technical Field

[0001] This utility model relates to the field of bulletproof inserts, and in particular to a bulletproof insert made of ultra-high molecular weight polyethylene fiber composite. Background Technology

[0002] As a core component of individual soldier protective equipment, the material and performance of ballistic plates directly affect the protective effect. Existing ballistic plates are used in conjunction with body armor, fixed in slots in the body armor to provide the body armor with a high level of ballistic protection. Although ballistic plates play an important role in individual soldier protection, the traditional steel plate material is too heavy and seriously restricts tactical mobility. Now, ballistic plates made of polyethylene material have been developed, which are lighter in weight but have limited protection levels, with the highest being only NIJ III. At the same time, although ceramic ballistic plates have strong ballistic resistance and are lightweight, they will fail after being hit by a bullet and cannot withstand secondary hits.

[0003] In the existing technology, it is difficult to balance the relationship between weight and ballistic capability among various materials used in bulletproof plates, resulting in the inability to achieve satisfactory ballistic protection and a lighter weight.

[0004] Therefore, an ultra-high molecular weight polyethylene fiber composite bulletproof insert is provided. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the present invention aims to solve the technical problem of the difficulty in balancing the relationship between weight and bulletproof capability.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an ultra-high molecular weight polyethylene fiber composite bulletproof insert, comprising a protective component and a protective component wrapped inside the protective component.

[0008] The protective component includes a wrapping fabric layer, inside which a plastic shell is wrapped;

[0009] The protective assembly includes a metal bulletproof structure, a polyethylene structure installed on one side of the metal bulletproof structure, a ceramic structure installed on one side of the polyethylene structure, and the metal bulletproof structure, polyethylene structure, and ceramic structure are enclosed inside a plastic shell.

[0010] As a preferred embodiment of the ultra-high molecular weight polyethylene fiber composite bulletproof insert of this utility model, the metal bulletproof structure includes a metal bulletproof plate, and the metal bulletproof plate is provided with four sets of rivet grooves, and each set of rivet grooves is fitted with a rivet.

[0011] As a preferred embodiment of the ultra-high molecular weight polyethylene fiber composite bulletproof insert of this utility model, the polyethylene structure includes a polyethylene bulletproof plate, the outer surface of the polyethylene bulletproof plate is coated with a waterproof coating, and the outer surface of the waterproof coating is wrapped with a heat insulation layer.

[0012] As a preferred embodiment of the ultra-high molecular weight polyethylene fiber composite bulletproof insert of this utility model, the ceramic structure includes a ceramic bulletproof plate, the outer surface of the ceramic bulletproof plate is coated with a polyurea coating, and the outer surface of the polyurea coating is wrapped with an installation fabric layer.

[0013] As a preferred embodiment of the ultra-high molecular weight polyethylene fiber composite bulletproof insert of this utility model, wherein: the polyethylene structure and the ceramic structure are provided with holes for use with rivets.

[0014] The beneficial effects of this utility model are as follows: By using three different materials for the bulletproof plates, the thickness of the bulletproof steel plates is reduced, which effectively reduces the weight of the steel plates. The use of polyethylene material in the middle layer further reduces the weight of the device. The use of ceramic plates in the innermost layer avoids the problem of ceramics being directly damaged by bullets, preventing small-caliber bullets from directly damaging the ceramic plates. Through the combination of multiple structures, the bulletproof capability and weight are balanced. The rivet fixing method is more effective and has a longer shelf life than the traditional adhesive method, and it does not have the problem of failure due to adhesion between different materials. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 A schematic diagram of the overall axonometric structure according to an embodiment of this utility model;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of one embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the protective component structure according to an embodiment of this utility model;

[0019] Figure 4 A schematic diagram of the specific structure of the metal bulletproof plate according to one embodiment of this utility model;

[0020] Figure 5A schematic diagram of the specific structure of the polyethylene bulletproof plate according to one embodiment of this utility model;

[0021] Figure 6 A schematic diagram of the specific structure of the ceramic bulletproof plate according to one embodiment of this utility model.

[0022] In the diagram: 100, protective component; 101, covering fabric layer; 102, plastic shell; 200, protective component; 201, metal bulletproof structure; 201a, metal bulletproof plate; 201b, rivet groove; 201c, rivet; 202, polyethylene structure; 202a, polyethylene bulletproof plate; 202b, waterproof coating; 202c, heat insulation layer; 203, ceramic structure; 203a, ceramic bulletproof plate; 203b, polyurea coating; 203c, mounting fabric layer. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example

[0028] Reference Figure 1-6 This embodiment provides an ultra-high molecular weight polyethylene fiber composite bulletproof insert, including a protective component 100 and a protective component 200 wrapped inside the protective component 100.

[0029] The protective component 100 includes a cloth layer 101, inside which is a plastic shell 102. The plastic shell 102 fixes and limits the multiple sets of plates inside, preventing the multiple bulletproof plates from shaking or loosening due to tactical movements during daily use.

[0030] The protective component 200 includes a multi-layered structure such as a metal bulletproof structure 201, a polyethylene structure 202, and a ceramic structure 203. The metal bulletproof structure 201 includes a metal bulletproof plate 201a made of steel. The metal bulletproof plate 201a has four sets of rivet slots 201b for installing and fixing rivets 201c. Each set of rivet slots 201b is fitted with a rivet 201c, which is made of the same material as the metal bulletproof plate 201a. A polyethylene structure 202 is installed on one side of the metal bulletproof structure 201. The polyethylene structure 202 includes a polyethylene bulletproof plate 202a made of polyethylene material. The outer surface of the polyethylene bulletproof plate 202a is coated with a waterproof coating 202b, which effectively prevents moisture ingress, allowing the device to adapt to complex environments. In the environment, the outer surface of the waterproof coating 202b is wrapped with a heat insulation layer 202c. The heat insulation layer 202c uses traditional heat-insulating and flame-retardant cotton. A ceramic structure 203 is installed on one side of the polyethylene structure 202. The ceramic structure 203 includes a ceramic bulletproof plate 203a. The outer surface of the ceramic bulletproof plate 203a is coated with a polyurea coating 203b. The polyurea coating 203b can effectively reduce back protrusion after being hit by a bullet. The outer surface of the polyurea coating 203b is wrapped with an installation fabric layer 203c. The fabric layer 203c increases the flexibility of the device and avoids the metal bulletproof structure 201, the polyethylene structure 202, and the ceramic structure 203 being wrapped inside the plastic shell 102. The polyethylene structure 202 and the ceramic structure 203 are provided with holes for use with rivets 201c, so that the rivets 201c can pass through the polyethylene structure 202 and the ceramic structure 203 and connect to the metal bulletproof structure 201.

[0031] This embodiment has the following workflow: When in use, the device is worn inside a bulletproof vest. When hit, a small-caliber bullet will first strike the outer metal bulletproof plate 201a. After penetrating the metal bulletproof plate 201a, it will enter the polyethylene bulletproof plate 202a to absorb all the kinetic energy. When a large-caliber bullet hits, it will pass through the polyethylene bulletproof plate 202a and strike the ceramic structure 203. The ceramic structure 203 will then defend against the large-caliber bullet.

[0032] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to the implementation of the present invention) may be omitted.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A bulletproof insert made of ultra-high molecular weight polyethylene fiber, characterized in that: It includes a protective component (100) and a protective component (200) enclosed inside the protective component (100). The protective component (100) includes a wrapping fabric layer (101) and a plastic shell (102) is wrapped inside the wrapping fabric layer (101). The protective component (200) includes a metal bulletproof structure (201), a polyethylene structure (202) is installed on one side of the metal bulletproof structure (201), a ceramic structure (203) is installed on one side of the polyethylene structure (202), and the metal bulletproof structure (201), the polyethylene structure (202) and the ceramic structure (203) are enclosed inside a plastic shell (102); The metal bulletproof structure (201) includes a metal bulletproof plate (201a), which has four sets of rivet grooves (201b) and a rivet (201c) installed on each set of rivet grooves (201b). The polyethylene structure (202) includes a polyethylene bulletproof plate (202a), the outer surface of which is coated with a waterproof coating (202b) and the outer surface of which is covered with a heat insulation layer (202c). The ceramic structure (203) includes a ceramic bulletproof plate (203a), the outer surface of which is coated with a polyurea coating (203b) and the outer surface of which is covered with an installation fabric layer (203c). The polyethylene structure (202) and the ceramic structure (203) are provided with holes for use with the rivets (201c).