What is the manufacturing process for low reflection laminated glass?

Low-reflective coated Laminated Glass (LRL) is a kind of common architectural glass, that has the characteristics of good light transmittance and low reflectivity and is widely used in high-grade commercial buildings, exhibition halls, museums, and other places. This article will introduce the manufacturing process of LRL in detail.

I. Basic structure of low-reflection laminated glass

Low-reflective laminated glass consists of a polyvinyl alcohol film (PVB) laminated between two or more glass panes, which prevents splashes and absorbs impact when the glass breaks. In addition, low-reflective laminated glass is also coated with a layer of low-reflectivity materials, greatly reducing the degree of light reflection, and improving visual clarity.

Manufacturing process

1. glass cutting: according to the requirements of the design drawings, select the appropriate thickness of the glass and use professional glass cutting equipment to cut the required size of the glass plate.

2. Cleaning and drying: Send the cut glass plate into the automatic washing machine for cleaning, remove the dust oil, and other impurities attached to the surface, and then use the high-temperature drying equipment to dry it to a very low moisture state.

3. Coating Preparation: Special organic materials are mixed well and put into the vacuum evaporation coating machine for heating, to make it evaporate and release the optical coating. The type and thickness of the coating material can be adjusted as necessary to achieve the desirable results.

4. Coating: Spray the coating evenly on the surface of the washed and dried glass plate. The coated glass panes need to be baked at a constant temperature and humidity to allow the coating to bond to the glass surface.

5. Interlayer: PVB film is cut to the required length and width and placed between two coated and treated glass panes so that it adheres to the glass panes and air bubbles are removed.

6. Pressure Processing: The laminated glass panels are fed into the pre-press for pre-pressing so that the laminated portion of the glass panels and the PVB film are firmly bonded together.

7. High-temperature processing: The laminated and pre-pressed glass panels are sent into a high-temperature tempering furnace for heating to achieve high-temperature conditions, which creates a compressive force on the surface of the glass panels, thus increasing their strength. This step is an important part of ensuring that the low-reflection laminated glass is used for building safety requirements.

8. Edge Processing: For the production of good glass plate edge polishing, punching, and other processing, so that it can be in line with the design drawings of the required size and shape.

9. Quality Inspection: Each batch of low-reflection laminated glass needs to undergo strict quality inspection, including flatness, thickness, transparency, impact strength, etc., to ensure that these glass panels comply with national standards and engineering requirements.

III. Summary

Low-reflective laminated glass is an important type of architectural glass, and its desirable properties such as low reflectivity and anti-splash and impact resistance are widely used in various types of buildings. Its manufacturing process requires several steps, including glass cutting, cleaning and drying, coating preparation, coating, lamination, pressure processing, high-temperature treatment, edge processing, and quality inspection, etc. Each step is critical and affects the performance and quality of the products. In the future, as technology and processes continue to advance, the methods used to make low-reflective laminated glass will become more refined and efficient, allowing these glass panels to play a greater role in the architectural field.