Novel ultrathin laminated glass

Abstract

The utility model relates to the field of glass products, in particular to novel ultra-thin laminated glass, which solves the problem of lower structural strength in the edge of the existing laminated glass, and comprises outer-layer glass, inner-layer glass and a middle film clamped between the outer-layer glass and the inner-layer glass, the edge of the side, close to the inner-layer glass, of the outer-layer glass is machined to form a chamfer part, the middle film extends to cover the chamfer part and exceeds the edge of the outer-layer glass and the edge of the inner-layer glass, the edge of the middle film is coated with an edge sealing agent layer, and the position between the chamfer parts on the two sides of the middle film is filled with a silica gel gasket. The edges of the outer layer glass, the inner layer glass and the middle film are coated with a metal U-shaped groove, and the metal U-shaped groove is filled with sealant.

Description

Technical Field

[0001] This utility model relates to the field of glass products, specifically to a novel ultrathin laminated glass. Background Technology

[0002] Traditional laminated glass edge sealing often relies on a single adhesive layer or metal edging, and its structure is a conventional design on the market. As shown in CN 101423338 A, a method for sealing the edge of laminated glass is described, wherein the laminated glass has an outer glass layer and an interlayer sandwiched in the outer glass layer, and includes an edge coating process in which an edge sealant is used to cover the cross-section of the interlayer between the glass layers.

[0003] The structure is simple and a conventional design. However, due to the different materials of the interlayer and the glass, thermal expansion and contraction cause the adhesive layer to crack, and moisture penetration leads to delamination of the interlayer. The edge structure, due to its simple bonding, has low peel strength and is structurally unstable. Utility Model Content

[0004] Therefore, this utility model provides a novel ultra-thin laminated glass that solves the problem of low structural strength at the edge of existing laminated glass.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A novel ultrathin laminated glass includes an outer glass layer, an inner glass layer, and an interlayer film sandwiched between the two. The edge of the outer glass layer that is in close contact with the inner glass layer is chamfered. The interlayer film extends to cover the chamfered area and beyond the edges of the outer and inner glass layers. The edge of the interlayer film is coated with an edge sealant layer. A silicone gasket is filled between the chamfered portions on both sides of the interlayer film. The edges of the outer glass layer, the inner glass layer, and the interlayer film are covered with a metal U-shaped groove, which is filled with sealant.

[0007] Preferably, the intermediate film extends to cover part of the chamfered area and is hot-pressed to form an arc-shaped transition area. The end of the arc-shaped transition area forms a locking protrusion, and the metal U-shaped groove is provided with a locking groove to lock the locking protrusion.

[0008] Preferably, the surface of the silicone pad is provided with a water guide groove, and the end of the metal U-shaped groove is provided with a drain hole.

[0009] Preferably, the cross-section of the water guide channel is trapezoidal, and the inside of the water guide channel is coated with a hydrophobic coating.

[0010] Preferably, the angle of the chamfer is 45°±2°.

[0011] Preferably, the intermediate film is a PVB or SGP film.

[0012] By adopting the aforementioned technical solution, one advantage of this utility model is:

[0013] This technical solution features a chamfered structure between the outer and inner glass layers, which, together with an extended interlayer film and secured by a silicone gasket, forms a mechanical interlock at the glass edges. The silicone gasket absorbs thermal stress, preventing cracking of the adhesive layer due to thermal expansion and contraction, thus avoiding seal failure. The structure boasts high strength and peel resistance. The outermost layer incorporates a metal U-shaped groove for edge sealing, creating a sealed structure that, together with the internal silicone gasket, forms a multi-level sealing system. This high structural strength further enhances structural stability and makes it particularly suitable for ultra-thin laminated glass designs, ensuring edge strength and lifespan even with relatively small thickness dimensions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the stacked cross-section of the glass in an embodiment of the present invention;

[0015] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0016] Reference numerals: 1. Outer glass; 11. Chamfered edge; 2. Inner glass; 21. Butyl rubber; 3. Intermediate film; 31. Arc-shaped transition area; 32. Locking protrusion; 4. Metal U-shaped groove; 41. Locking groove; 5. Silicone gasket; 51. Water guide groove; 6. Sealant. Detailed Implementation

[0017] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] Example

[0019] refer to Figure 1 and Figure 2 A novel ultra-thin laminated glass includes an outer glass layer 1, an inner glass layer 2, and an interlayer film 3 sandwiched between the two. The interlayer film 3 is a PVB or SGP film. Both the outer glass layer 1 and the inner glass layer 2 are tempered glass with a thickness of 2-8 mm. A chamfered portion 11 is formed at the edge of the side of the outer glass layer 1 that is close to the inner glass layer 2. The angle of the chamfered portion 11 is 45°±2°, which facilitates processing and improves the yield rate.

[0020] The intermediate film 3 extends to cover the chamfered portion 11 area and extends beyond the edges of the outer glass layer 1 and the inner glass layer 2. The edges of the intermediate film 3 are coated with an edge-sealing agent, specifically a polyurethane-based edge-sealing agent, to form a coating structure. A silicone gasket 5 is filled between the chamfered portions 11 on both sides of the intermediate film 3. A metal U-shaped groove 4 covers the edges of the outer glass layer 1, the inner glass layer 2, and the intermediate film 3, and the metal U-shaped groove 4 is filled with sealant 6. This technical solution structurally designs the chamfered portion 11 structure of the outer glass layer 1 and the inner glass layer 2, which, together with the extended intermediate film 3 and secured by the silicone gasket 5, forms a mechanical interlock at the glass edges. The silicone gasket 5 can absorb thermal stress, preventing cracking of the adhesive layer due to thermal expansion and contraction, thus avoiding sealing failure. The structure has high strength and high peel resistance.

[0021] Structurally, the intermediate film 3 extends and covers part of the chamfered portion 11 area, forming an arc-shaped transition zone 31 through hot pressing. The arc-shaped transition zone 31 extends and bends towards the inner glass layer 2, with a radius of curvature of 2-3 mm. During production, to ensure structural stability, butyl rubber 21 must be pre-filled at the chamfered portion 11 of the inner glass layer 2 to fix the arc-shaped transition zone 31 before proceeding to subsequent production. During hot pressing, a locking protrusion 32 is formed at the end of the arc-shaped transition zone 31, and a locking groove 41 is provided in the metal U-shaped groove 4 to lock the locking protrusion 32. The outermost layer of the structure is designed with a metal U-shaped groove 4 for edge wrapping, forming a sealing structure at the outermost layer. This, together with the internal silicone gasket 5, forms a multi-level sealing system with high structural strength, further improving structural stability. It is particularly suitable for the structural design of ultra-thin laminated glass, ensuring the edge strength and lifespan of the glass even with a small thickness.

[0022] In this embodiment, a water guide groove 51 is formed on the surface of the silicone gasket 5, and a drain hole is formed at the end of the metal U-shaped groove 4. In the structure, liquid will inevitably seep into the metal U-shaped groove 4 and the silicone gasket 5. Therefore, a directional drainage water guide groove 51 is designed in conjunction with a drain hole (not shown in the figure) to reduce the retention of external liquids such as condensate and accelerate metal corrosion, thus ensuring the service life.

[0023] Structurally, the cross-section of the water guide channel 51 is trapezoidal, and the interior of the water guide channel 51 (i.e., the bottom of the trapezoid) is coated with a hydrophobic coating. The hydrophobic coating can be made of conventional hydrophobic materials such as fluorinated silane modified coatings to accelerate drainage and have a certain degree of self-cleaning function.

[0024] The following are the parameters of the trial production product:

[0025] Glass: 2.5mm soda-lime glass, with a chamfer of 45°±0.5° and a depth of 0.8mm;

[0026] Intermediate film: 0.38mm PVB film, extended coverage 6mm, curvature radius R of the arc transition zone = 2.5mm;

[0027] Silicone gasket: Water channel opening width 1.5mm, hydrophobic coating contact angle 155°;

[0028] Metal U-shaped channel: 304 stainless steel, anchor point diameter 2.5mm, drain hole diameter 0.8mm;

[0029] Performance tests under the above parameters:

[0030] Humid heat cycle (85℃ / 85%RH, 1000h): Water vapor permeability 0.007g / (m³) 2 ·day);

[0031] Edge peel strength: 55 N / mm (ASTM C794).

[0032] This product boasts advantages such as ultra-thin design and long lifespan, making it suitable for use in fields such as construction and automotive.

[0033] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A novel ultrathin laminated glass, comprising an outer glass layer (1), an inner glass layer (2), and an interlayer film (3) sandwiched between the two, characterized in that: A chamfer (11) is formed at the edge of the outer glass (1) that is close to the inner glass (2). The intermediate film (3) extends to cover the chamfer (11) area and goes beyond the edges of the outer glass (1) and the inner glass (2). The edge of the intermediate film (3) is coated with an edge sealant layer. A silicone gasket (5) is filled between the chamfers (11) on both sides of the intermediate film (3). The edges of the outer glass (1), the inner glass (2) and the intermediate film (3) are covered with a metal U-shaped groove (4). The metal U-shaped groove (4) is filled with sealant (6).

2. The novel ultrathin laminated glass according to claim 1, characterized in that: The intermediate film (3) extends to cover part of the chamfered portion (11) area and is hot-pressed to form an arc-shaped transition area (31). The end of the arc-shaped transition area (31) forms a locking protrusion (32). The metal U-shaped groove (4) is provided with a locking groove (41) to lock the locking protrusion (32).

3. The novel ultrathin laminated glass according to claim 1, characterized in that: The surface of the silicone pad (5) is provided with a water guide groove (51), and the end of the metal U-shaped groove (4) is provided with a drain hole.

4. The novel ultrathin laminated glass according to claim 3, characterized in that: The cross-section of the water guide channel (51) is trapezoidal, and the interior of the water guide channel (51) is coated with a hydrophobic coating.

5. A novel ultrathin laminated glass according to any one of claims 1-4, characterized in that: The angle of the chamfered portion (11) is 45°±2°.

6. A novel ultrathin laminated glass according to any one of claims 1-4, characterized in that: The intermediate film (3) is a PVB or SGP film.

Images