How is curved laminated glass made?

As a seasoned supplier in the laminated glass industry, I’m frequently asked about the intricate process of manufacturing curved laminated glass. It’s a fascinating journey that combines advanced technology, meticulous craftsmanship, and a deep understanding of materials. In this blog post, I’ll take you through the step-by-step process of creating curved laminated glass, from the initial design phase to the final product. Laminated Glass

Design and Planning

The process of making curved laminated glass begins with a detailed design. Our team of experienced architects and engineers work closely with clients to understand their specific requirements and vision. We take into account factors such as the shape, size, curvature, and intended use of the glass. Using state-of-the-art 3D modeling software, we create a virtual prototype of the glass, allowing us to visualize the final product and make any necessary adjustments before fabrication begins.

Once the design is finalized, we calculate the precise dimensions and curvature of the glass. This information is crucial for the subsequent manufacturing steps, as it ensures that the glass will fit perfectly into its intended application. We also consider the structural integrity of the glass, taking into account factors such as wind loads, seismic activity, and the weight of any additional materials or fixtures.

Glass Selection

The quality of the glass used in the manufacturing process is of utmost importance. We only source our glass from reputable suppliers who meet our strict quality standards. We offer a wide range of glass types and thicknesses to choose from, depending on the specific requirements of the project. Some of the most common types of glass used in curved laminated glass include float glass, tempered glass, and low-emissivity (low-e) glass.

Float glass is a standard type of glass that is produced by floating molten glass on a bed of molten tin. It has a smooth and uniform surface, making it ideal for a variety of applications. Tempered glass is a type of safety glass that is heat-treated to increase its strength and resistance to breakage. It is commonly used in applications where safety is a concern, such as in cars and buildings. Low-e glass is a type of energy-efficient glass that has a special coating that reduces the amount of heat that passes through the glass. It is commonly used in buildings to improve energy efficiency and reduce heating and cooling costs.

Cutting and Shaping

Once the glass has been selected, it is cut to the desired size and shape. This is typically done using a computer-controlled cutting machine, which ensures precision and accuracy. The glass is then shaped using a variety of techniques, depending on the complexity of the curvature. For simple curves, the glass can be bent using a hot bending process, where the glass is heated to a specific temperature and then bent into the desired shape using a mold. For more complex curves, the glass may need to be shaped using a CNC (computer numerical control) machine, which uses a high-pressure water jet or laser to cut the glass into the desired shape.

Lamination

The next step in the manufacturing process is lamination. Lamination is the process of bonding two or more layers of glass together using a layer of adhesive interlayer. The adhesive interlayer helps to hold the glass together in the event of breakage, preventing it from shattering into sharp pieces. It also provides additional strength and durability to the glass.

There are several types of adhesive interlayers that can be used in the lamination process, including PVB (polyvinyl butyral), EVA (ethylene vinyl acetate), and SentryGlas®. PVB is the most commonly used adhesive interlayer in the laminated glass industry. It is a clear, flexible material that provides excellent adhesion to the glass and has good optical properties. EVA is a newer type of adhesive interlayer that is becoming increasingly popular in the industry. It is a more rigid material than PVB, which makes it ideal for applications where high strength and durability are required. SentryGlas® is a high-performance adhesive interlayer that is designed to provide exceptional strength and security. It is commonly used in applications where security is a concern, such as in banks and government buildings.

The lamination process typically involves the following steps:

Cleaning: The glass is thoroughly cleaned to remove any dirt, dust, or debris from the surface. This ensures that the adhesive interlayer will bond properly to the glass.
Cutting the Interlayer: The adhesive interlayer is cut to the same size and shape as the glass.
Assembling the Layers: The layers of glass and adhesive interlayer are carefully assembled in a cleanroom environment to prevent any contaminants from getting between the layers.
Degassing: The assembled layers are placed in a vacuum bag and degassed to remove any air bubbles between the layers. This helps to ensure a strong and uniform bond between the glass and the adhesive interlayer.
Autoclaving: The degassed laminated glass is then placed in an autoclave, which is a large pressure vessel. The autoclave is heated to a specific temperature and pressure, which activates the adhesive interlayer and bonds the layers of glass together. The autoclaving process typically takes several hours, depending on the size and thickness of the laminated glass.

Quality Control

Once the laminated glass has been autoclaved, it undergoes a rigorous quality control process. Our team of quality control experts inspects the glass for any defects, such as bubbles, scratches, or delamination. The glass is also tested for its strength, durability, and optical properties. Any glass that does not meet our strict quality standards is rejected and recycled.

Finishing and Installation

After the quality control process is complete, the curved laminated glass is finished and prepared for installation. This may involve trimming the edges of the glass, polishing the surface, or applying a protective coating. The glass is then packaged and shipped to the installation site.

At the installation site, our team of experienced installers carefully installs the curved laminated glass into its intended application. They use specialized tools and techniques to ensure that the glass is installed correctly and securely. The installation process typically takes several hours, depending on the size and complexity of the project.

Conclusion

Laminated Glass The process of making curved laminated glass is a complex and fascinating one that requires a high level of skill and expertise. From the initial design phase to the final installation, every step of the process is carefully monitored and controlled to ensure that the final product meets our strict quality standards. As a leading supplier of laminated glass, we are committed to providing our clients with the highest quality products and services. If you are interested in learning more about our curved laminated glass products or have any questions about the manufacturing process, please don’t hesitate to contact us. We would be happy to discuss your specific requirements and provide you with a free quote.

References

ASTM International. (2023). ASTM C1172 – 19 Standard Specification for Laminated Architectural Flat Glass. West Conshohocken, PA: ASTM International.
Glass Association of North America. (2023). Curved Glass Design Guide. Silver Spring, MD: Glass Association of North America.
Pilkington Group Limited. (2023). Pilkington Curved Glass Technical Manual. St. Helens, UK: Pilkington Group Limited.

Qinhuangdao Aohong Glass Co., Ltd.
As one of the leading laminated glass suppliers in China, we warmly welcome you to wholesale high quality laminated glass made in China here from our factory. For more cheap products, contact us now.
Address: Qinxin Yuelanshan, Haigang District, Qinhuangdao City, Hebei Province, China.
E-mail: judy@aohongglass.com
WebSite: https://www.aohongglass.com/