Bulletproof glass assembly

Abstract

The present invention relates to the technical field of safety glass, and more particularly to a bulletproof glass assembly comprising bulletproof glass and edge-sealing tape. The bulletproof glass comprises a resin plate and a plurality of glass plates bonded layer by layer to a surface of the resin plate. In a longitudinal cross-section of the bulletproof glass, the edges of each glass plate are straight edges connected to two opposing surfaces of the glass plate by straight chamfered portions, with inter-plate gaps formed between the straight chamfered portions of adjacent glass plates. The edge-sealing tape is at least partially bonded between the adjacent straight edges and covers the inter-plate gaps. The present invention can reduce the infiltration of moisture into the bulletproof glass.

Description

Technical Field

[0001] The present invention relates to the technical field of safety glass, and in particular to a bulletproof glass assembly. Background Art

[0002] Bulletproof glass, a transparent, bulletproof material, possesses exceptional strength and toughness. Under satisfactory optical conditions, it can withstand the threat of bullets and protect human life and property. Currently, most bulletproof glass utilizes a layered design. Mid- to high-grade bulletproof glass primarily consists of a composite of multiple layers of glass and resin sheets (polycarbonate), with glass on the bullet-facing side and resin sheets on the back. This structure not only ensures the glass's strength but also increases its toughness, effectively reducing the impact of glass fragments and preventing further harm to human life when facing a firearm threat. However, due to the significant difference in thermal expansion coefficients between the glass and resin sheets, this structure can cause a mismatch between the resin and glass sheets during use. This can strain the adhesive layer between the two sheets, increasing moisture intrusion and causing bubbles, discoloration, and debonding. This compromises product quality and reliability, significantly reducing user experience, especially for automotive bulletproof glass with stringent optical requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a bulletproof glass assembly which can reduce the infiltration of water vapor and the influence on product quality.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a bulletproof glass assembly, comprising bulletproof glass and edge-sealing tape; the bulletproof glass comprises a resin plate and a plurality of glass plates bonded layer by layer to the plate surface of the resin plate; in a longitudinal cross-section of the bulletproof glass, the edges of each of the glass plates are straight edges, connected to two opposite surfaces of the glass plate by straight chamfered portions, and inter-plate gaps are formed between the straight chamfered portions of adjacent glass plates; the edge-sealing tape is at least partially bonded between the adjacent straight edges and covers the inter-plate gaps.

[0005] The beneficial effects of the present invention are as follows: the edge of the glass plate is configured as a straight edge, and the straight edge is connected to two opposite surfaces of the glass plate via a straight chamfered portion. The straight edge enables the edge-sealing tape to be smoothly bonded to the edge of the glass plate; the straight chamfered portion not only ensures the appearance of the edge-sealing tape during bonding, but also facilitates the control of the amount of grinding, thereby controlling the size of the gap between the chamfered areas of the glass plate, preventing too little grinding from causing a sharp edge of the glass plate that could damage the edge-sealing tape, and too much grinding from causing an excessive gap that could cause the edge-sealing tape to sag, thereby achieving the purpose of reducing moisture intrusion.

[0006] Compared with other chamfer shapes, the straight chamfer portion has the advantage that after the tape is attached and / or the bullet-proof glass assembly is high-pressure assembled, the tape will not be concave and attached inward along the chamfer shape, thereby improving the overall appearance of the bullet-proof glass assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the cross-sectional structure of a bullet-proof glass assembly in a first embodiment of the present invention;

[0008] Figure 2 This is a schematic structural diagram of a bulletproof glass assembly in a second specific embodiment of the present invention;

[0009] Description of labels:

[0010] 1. Bulletproof glass; 11. Resin plate; 12. Glass plate; 13. Straight edge; 14. Straight chamfer; 2. Edge-sealing tape. DETAILED DESCRIPTION

[0011] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0012] Please refer to Figure 1 As shown, the present invention provides a bulletproof glass assembly, comprising a bulletproof glass 1 and an edge-sealing tape 2. The bulletproof glass 1 comprises a resin plate 11 and a plurality of glass plates 12 bonded layer by layer to the surface of the resin plate 11. In a longitudinal cross-section of the bulletproof glass 1, the edges of each glass plate 12 are straight edges 13, connected to two opposing surfaces of the glass plate 12 by straight chamfered portions 14, and inter-plate gaps are formed between the straight chamfered portions 14 of adjacent glass plates 12. The edge-sealing tape 2 is at least partially bonded between the adjacent straight edges 13 and covers the inter-plate gaps.

[0013] As can be seen from the above description, the beneficial effects of the present invention are as follows: the edge of the glass plate 12 is configured as a straight edge 13, and the straight edge 13 is connected to two opposite surfaces of the glass plate 12 via a straight chamfered portion 14. The use of the straight edge 13 enables the edge-sealing tape 2 to be smoothly bonded to the edge of the glass plate 12; the use of the straight chamfered portion 14 not only ensures the appearance of the edge-sealing tape 2 when bonded, but also facilitates the control of the amount of grinding, thereby controlling the size of the gap between the chamfered areas of the glass plate 12, and preventing too little grinding from causing a sharp edge on the glass plate 12 that could damage the edge-sealing tape 2, or too much grinding from causing an excessive gap that could cause the edge-sealing tape 2 to dent.

[0014] In one or more embodiments, the glass sheets are bonded together by a thermoplastic interlayer. Materials for the thermoplastic interlayer include, but are not limited to, polyvinyl butyral (PVB). Other materials include polycarbonate (PC), sound-insulating PVB, light-blocking PVB, thermal-control PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), polyacetal (POM), polybutylene terephthalate (PBT), polyethylene vinyl acetate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyacrylate (PA), polymethyl methacrylate (PMMA), and polyurethane foam (PUR). The thickness of the thermoplastic interlayer ranges from 0.38 mm to 0.76 mm, preferably 0.76 mm.

[0015] The material for the glass plate can be varied. According to one or more embodiments, the material for the glass plate can be the same material or different materials. In an exemplary embodiment, one or both of the glass plates can be glass (e.g., soda-lime glass, alkali aluminosilicate glass, alkali-containing borosilicate glass and / or alkali aluminoborosilicate glass) or glass ceramics. Examples of suitable glass ceramics include Li2O-Al2O3-SiO2 system (i.e., LAS system) glass ceramics; MgO-Al2O3-SiO2 system (i.e., MAS system) glass ceramics; and glass ceramics comprising a crystalline phase, the crystalline phase being any one or more of the following substances: mullite, spinel, quartz, porcelain-quartz solid solution, petalite, lithium disilicate, spodumene, nepheline and alumina. In addition, one or both of the glass plates can be chemically strengthened, thermally strengthened, mechanically strengthened or a combination thereof. In one or more embodiments, one of the glass sheets is unstrengthened (meaning it has not been strengthened by chemical, thermal, or mechanical strengthening processes, but may include annealed substrates), and the other glass sheet is strengthened. Specifically, the combination of various strengthening methods can meet the strength requirements of the glass assembly under various vehicle installation conditions.

[0016] In a preferred embodiment, the glass plate 12 and the resin plate 11 are bonded together by PU material.

[0017] In one or more embodiments, the thickness of the glass sheet 12 can be 5 mm to 12 mm; or in the range of 6 mm to about 11 mm, or in the range of about 7 mm to about 10 mm, or in the range of about 7 mm to about 9 mm, or in the range of about 7 mm to about 8.5 mm, or in the range of about 7.5 mm to about 8.5 mm, or in the range of about 8 mm to about 8.5 mm; in one embodiment, the thickness of each glass sheet 12 of the bulletproof glass is 8 mm.

[0018] Furthermore, the linear chamfered portion 14 is an inclined surface that forms an angle of 30°-75° with the linear edge 13 .

[0019] Furthermore, an extension line of the straight edge 13 and an extension surface of one of the opposite surfaces of the glass plate 12 have an intersection, and a distance from the intersection to the closest straight chamfered portion 14 is 0.5 mm to 2 mm.

[0020] As can be seen from the above description, the grinding amount of the linear chamfered portion 14 formed at the edge of the glass plate 12 is controlled to ensure the bonding quality of the edge-sealing tape 2 to the edge of the glass plate 12 .

[0021] Furthermore, the portion of the bulletproof glass 1 exposed to air has an edge-sealing area, the edge-sealing tape 2 is at least partially bonded to the edge-sealing area, and the unbonded portion of the edge-sealing tape 2 and the edge-sealing area is distributed longitudinally along the bulletproof glass 1 .

[0022] As can be seen from the above description, the edge sealing tape 2 is used to seal the edge sealing area of ​​the bulletproof glass 1 to reduce the intrusion of external moisture into the bulletproof glass 1.

[0023] Please refer to Figure 1 As shown, further, the edge sealing tape 2 completely covers all edges of the glass plate 12 in the edge sealing area, and the edge sealing tape 2 is partially bonded to the edge of the resin plate 11, and the edge of the resin plate 11 has concave and convex burrs.

[0024] As can be seen from the above description, during high-pressure lamination, gas can be discharged from the concave-convex burrs on the edge of the resin plate 11 to prevent bubbles from forming in the bulletproof glass 1 .

[0025] Please refer to Figure 2 As shown, further, the ratio of the area of ​​the bonding area of ​​the edge sealing tape 2 to the area of ​​the edge sealing area is at least 0.85.

[0026] As can be seen from the above description, during high-pressure lamination, gas can be discharged from the area of ​​the edge sealing region that is not covered by the edge sealing tape 2 to prevent bubbles from forming in the bulletproof glass 1.

[0027] Furthermore, a shaped film is provided on one end surface of the edge-sealing tape 2 away from the bulletproof glass 1 , and a decorative pattern is provided on the shaped film.

[0028] As can be seen from the above description, during high-pressure lamination, the edge-sealing tape 2 softens under high pressure, so the forming film is used to limit the shape of the edge-sealing tape 2, thereby ensuring the appearance of the edge-sealing tape 2 adhered to the edge of the bullet-proof glass 1. At the same time, the decorative pattern is used to further enhance the appearance of the bullet-proof glass 1.

[0029] Furthermore, the edge-sealing tape 2 is made of a waterproof thermoplastic material.

[0030] It can be seen from the above description that the waterproof performance of the edge sealing tape 2 can isolate external moisture.

[0031] Furthermore, the bonding strength between the edge-sealing tape 2 and the bullet-proof glass 1 is greater than 0.6 N / mm.

[0032] From the above description, it can be seen that the bonding strength must be greater than 0.6 N / mm to ensure the application of the edge-sealing tape 2 on the edge of the bullet-proof glass 1.

[0033] Furthermore, the width of the edge-sealing tape 2 is 2 mm to 40 mm, and the thickness of the edge-sealing tape 2 is less than or equal to 2 mm.

[0034] The present invention relates to an application scenario for a bulletproof glass assembly: When producing bulletproof glass, the edge of a glass plate 12 is configured as a straight edge 13, and the straight edge 13 is connected to two opposing surfaces of the glass plate 12 via a straight chamfered portion 14. The straight edge 13 allows the edge-sealing tape 2 to be smoothly bonded to the edge of the glass plate 12; the straight chamfered portion 14 not only ensures the appearance of the edge-sealing tape 2 during bonding, but also facilitates the control of the amount of grinding, thereby controlling the size of the gap between the chamfered areas of the glass plate 12. This prevents too little grinding from causing a sharp edge on the glass plate 12 that could damage the edge-sealing tape 2, and too much grinding from causing an excessive gap that could cause the edge-sealing tape 2 to dent.

[0035] Example 1

[0036] A bulletproof glass assembly, please refer to Figure 1 As shown, it includes bulletproof glass 1 and edge-sealing tape 2; the bulletproof glass 1 includes a resin plate 11 and multiple glass plates 12 bonded layer by layer to the plate surface of the resin plate 11; in the longitudinal section of the bulletproof glass 1, the edge of each glass plate 12 is a straight edge 13, and is connected to two opposite surfaces of the glass plate 12 by a straight chamfered portion 14, and a gap is formed between the straight chamfered portions 14 of adjacent glass plates 12; the edge-sealing tape 2 is at least partially bonded between the adjacent straight edges 13 and covers the gap.

[0037] The portion of the bulletproof glass 1 exposed to the air has an edge-sealing area, the edge-sealing tape 2 is bonded to the edge-sealing area, the edge-sealing tape 2 completely covers all edges of the glass plate 12 in the edge-sealing area, and the edge-sealing tape 2 is partially bonded to the edge of the resin plate 11, and the edge of the resin plate 11 has a concave-convex burr.

[0038] The edge-sealing tape 2 is provided with a molded film on one end facing away from the bulletproof glass 1, and the molded film is provided with a decorative pattern. Preferably, in this embodiment, the edge-sealing tape 2 is made of waterproof PU. In other equivalent embodiments, the edge-sealing tape 2 may also be made of other waterproof thermoplastic materials. The bond strength between the edge-sealing tape 2 and the bulletproof glass 1 is greater than 0.6 N / mm. The width of the edge-sealing tape 2 ranges from 2 mm to 40 mm, and the thickness of the edge-sealing tape 2 is less than or equal to 2 mm.

[0039] Working Principle: The edge of the glass plate 12 is configured as a straight edge 13, and the straight edge 13 is connected to two opposing surfaces of the glass plate 12 via a straight chamfer 14. The straight edge 13 allows the edge-sealing tape 2 to be smoothly bonded to the edge of the glass plate 12. The straight chamfer 14 not only ensures the appearance of the edge-sealing tape 2 during bonding, but also facilitates the control of the amount of grinding, thereby controlling the size of the gap between the chamfered areas of the glass plate 12. This prevents too little grinding from causing a sharp edge on the glass plate 12 that could damage the edge-sealing tape 2, and too much grinding from causing an excessive gap that could cause the edge-sealing tape 2 to dent. During high-pressure bonding, gas can be discharged from the concave and convex edges of the resin plate 11 to prevent bubbles from forming within the bulletproof glass 1.

[0040] Example 2

[0041] The difference between this embodiment and the first embodiment lies in the size of the bonding area of ​​the edge-sealing tape 2. The details are as follows:

[0042] Please refer to Figure 2 As shown, the portion of the bullet-proof glass 1 exposed to air has an edge-sealed area, and the edge-sealing tape 2 is bonded to the edge-sealed area, and the edge-sealing tape 2 is partially bonded to the edge-sealed area. Preferably, the portion of the edge-sealing tape 2 not bonded to the edge-sealed area is a gap distributed longitudinally along the bullet-proof glass 1. In other equivalent embodiments, the portion of the edge-sealing tape 2 not bonded to the edge-sealed area can be a gap that is not distributed longitudinally along the bullet-proof glass 1 or multiple gaps. Preferably, in this embodiment, the ratio of the bonding area of ​​the edge-sealing tape 2 to the area of ​​the edge-sealed area is 0.85. In other equivalent embodiments, the ratio of the bonding area of ​​the edge-sealing tape 2 to the area of ​​the edge-sealed area can be greater than 0.85.

[0043] Working principle: During high-pressure bonding, gas can be discharged from the area of ​​the edge sealing area that is not covered by the edge sealing tape 2 to prevent bubbles from forming in the bulletproof glass 1.

[0044] Example 3

[0045] This embodiment further defines the linear chamfered portion 14 on the basis of the first or second embodiment, specifically as follows:

[0046] A bulletproof glass assembly, please refer to Figure 1 As shown, the straight chamfered portion 14 forms an angle A with the straight edge 13, an extension line of the straight edge 13 and an extension surface of one of the opposite surfaces of the glass plate 12 have an intersection, and a distance from the intersection to the closest straight chamfered portion 14 is B; when the angle A is 30°, preferably, in this embodiment, B is 0.5 mm; when the angle A is 45°, preferably, in this embodiment, B is 1 mm; when the angle A is 60°, preferably, in this embodiment, B is 1.5 mm; when the angle A is 75°, preferably, in this embodiment, B is 2 mm.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the scope of the present invention's patent protection.

Claims

1. A bulletproof glass assembly, characterized by: The invention comprises bulletproof glass and edge-sealing tape; the bulletproof glass comprises a resin plate and a plurality of glass plates bonded layer by layer to the surface of the resin plate; in a longitudinal cross-section of the bulletproof glass, the edges of each glass plate are straight edges connected to two opposite surfaces of the glass plate by straight chamfered portions, and inter-plate gaps are formed between the straight chamfered portions of adjacent glass plates; the edge-sealing tape is at least partially bonded between the adjacent straight edges and covers the inter-plate gaps; the thickness of the glass plate is 5 mm to 12 mm.

2. The bulletproof glass assembly according to claim 1, characterized in that: The linear chamfered portion is an inclined surface that forms an angle of 30°-75° with the linear edge.

3. The bulletproof glass assembly according to claim 2, characterized in that: An extension line of the straight edge and an extension surface of one of the opposite surfaces of the glass plate have an intersection, and a distance from the intersection to the closest straight chamfered portion is 0.5 mm to 2 mm.

4. The bulletproof glass assembly according to claim 1, characterized in that: The portion of the bulletproof glass exposed to air has an edge sealing area, the edge sealing tape is at least partially bonded to the edge sealing area, and the portion of the edge sealing tape not bonded to the edge sealing area is distributed longitudinally of the bulletproof glass.

5. The bulletproof glass assembly according to claim 4, characterized in that: The edge sealing tape completely covers the edges of all the glass plates in the edge sealing area, and the edge sealing tape is partially bonded to the edge of the resin plate, and the edge of the resin plate has concave-convex burrs.

6. The bulletproof glass assembly according to claim 4, characterized in that: The ratio of the bonding area of ​​the edge sealing tape to the area of ​​the edge sealing area is at least 0.

85.

7. The bulletproof glass assembly according to claim 1, characterized in that: A shaped film is provided on one end surface of the edge-sealing tape away from the bulletproof glass, and a decorative pattern is provided on the shaped film.

8. The bulletproof glass assembly according to claim 1, characterized in that: The edge sealing tape is made of waterproof thermoplastic material.

9. The bulletproof glass assembly according to claim 1, characterized in that: The bonding strength between the edge sealing tape and the bulletproof glass is greater than 0.6 N / mm.

10. The bulletproof glass assembly according to claim 1, characterized in that: The width of the edge-sealing tape is 2 mm to 40 mm, and the thickness of the edge-sealing tape is less than or equal to 2 mm.

Images