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Specification for thickness of laminated glass film for commercial glass railings of tempered glass buildings in Shenzhen

Release time:

Nov 19,2024

Layered glass is a composite glass product that consists of two or more pieces of glass sandwiched between one or more layers of film and bonded together by high temperature and high pressure treatment. This structure can significantly improve the impact resistance of the glass, prevent splashes, and enhance safety. Regarding the required specification for the thickness of laminated glass film, the following are some key points:

1. standard thickness

The standard thickness of laminated glass glue is usually 0.38mm and 0.76mm, which are common specifications in the market and are suitable for most common application scenarios. In addition to the standard thickness, the laminated glass glue can also be customized according to customer needs, such as 0.89mm, 1.14mm, 1.52mm, 2.28mm, 3.04mm, etc. Customized thickness can provide more choices according to specific needs.

2. thickness selection factors

glass size and shape:

Plate shape: For curved or shaped glass, the choice of film thickness will pay more attention to the adaptability of glass curvature to ensure the stability of the overall structure.

Plate size: usually take the short side 800mm as the dividing line. when the length of the short side is less than or equal to 800mm, the film thickness may be relatively small. However, when the length of the short side exceeds 800mm, the film thickness will increase in order to maintain sufficient strength.

Substrate properties:

Float glass: For ordinary float glass, the film thickness is related to the thickness of the substrate. For example, when the thickness of the substrate is 6mm, the film thickness is usually 0.38mm regardless of the length of the short side, and when the thickness of the substrate is 15mm or 19mm, the film thickness is 1.52mm.

Tempered or semi-tempered glass: Due to its higher strength and thermal stability, the film thickness is usually thicker than float glass. For example, regardless of the thickness of the substrate, when the length of the short side is greater than 1500mm, the film thickness is usually 2.28mm.

Bent tempered or semi-tempered glass: This type of glass is used in a bent state and has higher requirements for the flexibility and bonding properties of the film. When the radius length is less than 3m, the film thickness shall be at least 2.28mm, and 3.04mm when it exceeds 3m.

Hot bending glass: According to the radius length, the film thickness is selected between 0.76mm and 1.52mm to adapt to its shape changes.

Security requirements:

For places that require higher safety performance, such as high-rise buildings, automotive glass, etc., a thicker adhesive will be selected to ensure that it can provide sufficient protection when impacted.

3. considerations

Thickness difference: The thickness difference between the two pieces of glass should not exceed 2mm to ensure that the film can be evenly bonded to avoid stress concentration.

Structural design: It is not recommend to use only one piece of tempered or semi-tempered glass, as this may reduce the overall safety of the glass. The film thickness should be selected based on the actual substrate thickness to ensure that it matches the glass.

Quality inspection: laminated glass needs to go through quality inspection and certification to ensure that it meets the relevant national or industry specifications. Detecting the thickness of laminated glass glue requires the use of professional instruments, such as glue thickness meters.

In summary, the selection of the thickness of the laminated glass film is a process that takes into account a variety of factors. In practical applications, in addition to the above specifications, building codes, environmental conditions, expected loads, and aesthetics are also considered. By selecting the film thickness reasonably, it can be ensured that the laminated glass can provide reliable safety guarantee in various application scenarios.

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