The era of low bending and low reflection is here.，The Evolution of Museum Display Case Glass。Throughout the history of display case glass in museums, it can be roughly divided into two stages:

Non-professional stage
Single glass, the beginning of glass for museum display cases.The glass used in the display cabinets of the museum is single-layer white glass. People are delighted to finally have a material that can preserve cultural relics."Visible yet intangible." However, due to the limitations of production technology at the time, the glass contained a high amount of iron impurities, resulting in a greenish hue that severely affected the accurate representation of the exhibit colors. But the museum had no choice at the time. No other materials could ensure both the visibility of the cultural relics and their protection from physical contact. Single sheets of glass were not strong enough, and the tempering process posed a risk of spontaneous bursting. This seemingly inescapable dilemma was resolved by Bohang Glass using interlayer technology, propelling the museum exhibit glass into a professional stage.

Professional Phase

Laminated glass: The Beginning of Specialization for Museum Display Glass. 

Ultra-clear Laminated Crystal Glass

In 2005, the successful domestication of Jingjing Ultra-Clear Glass marked a significant milestone. The upgrade of the original sheets is set to revolutionize the glass used in museum display cases. As a result, ultra-clear laminated glass, produced using Jingjing Ultra-Clear original sheets, has propelled the glass used in museum display cases into a professional phase. The application and promotion of ultra-clear laminated glass in museums has been a lengthy process.。In 2016, the National Cultural Relics Administration issued the "Notice on Strengthening the Safety of Displaying Cultural Relics," which explicitly prohibits the use of tempered glass for display cases and clearly mandates the use of laminated glass in the national standards for display cases. While ultra-clear glass effectively resolves color distortion issues, it has a high surface reflectivity. This directly impacts museum visitors, as the glass of display cases often reflects light and the viewer's image, making it difficult to discern the cultural relics and preventing clear photographs from being taken home. 

The era of low-reflectance interlayer

As the museum increasingly focuses on enhancing the visitor experience, it has sourced superior raw materials from around the globe, discovering exceptional options in Europe.Groglass is a company specializing in the production of low-reflection glass substrates, with technology sourced from AS Sidrabe, a member of the nanomaterial research center for the aerospace and defense departments of the former Soviet Union. Their primary focus is on low-reflection glass for aerospace vehicle lenses. As a result, Groglass has mastered highly advanced low-reflection substrate production technology. By importing Groglass low-reflection substrates and deeply researching their properties, the company continuously improves its processing techniques and has introduced low-reflection laminated glass. This product has garnered attention from museum professionals after limited applications in large venues like the National Museum of China. Since 2013, it has been widely used in the southern section of the newly constructed Hebei Provincial Museum (now known as Hebei Museum). Its non-reflective, high-transparency display performance has shone brightly at the Hebei Museum, making it a must-visit for renovations and new constructions of provincial-level museums. The low-reflection laminated glass has left a profound impression on every visitor. From its inception to widespread adoption, it took a remarkably short time. Currently, low-reflection laminated glass has become a standard in many museums, especially in first-tier institutions, and is even used locally in key areas despite limited full-scale application.

Major domestic exhibition companies are incorporating low-reflection laminated glass into museum designs. Large-scale display cabinet companies are also adopting low-reflection laminated glass cabinets as the standard for high-end display cabinets. Simultaneously, companies producing architectural coated glass in China are now manufacturing low-reflection glass sheets.

However, another issue arises."Is Low-Reflection Laminated Glass Perfect? Under external pressure and the weight of its own, glass can bend and deform. Small pieces of glass are not affected much, but for large glass panels like those in display cabinets, it's not a viable solution."

For instance, the occurrence rate of this bending phenomenon in museum display cases has reached70%. What harm can bending display cabinets cause? It damages the airtightness of the cabinets. Airtightness is crucial for the preservation of cultural relics. Cultural relics are generally hundreds or even thousands of years old and require suitable temperature and humidity in the environment to maintain their health, much like humans. When museums host exhibitions, professional display cabinets create a micro-environment inside, isolating the internal and external environments with the cabinet glass. This way, by using a temperature and humidity control unit inside the cabinet, cultural relics can enjoy a comfortable environment. 

Once the display cabinet glass is subjected to force and bends, the glass panels cannot align with each other, nor can they align with the frame. This compromises the airtightness of the cabinet, making the internal micro-environment unsuitable for preserving cultural relics. 

The Era of Low Bend and Low Reflectivity

It's time.In 2016, based on the "low-reflection laminated glass," engineers successfully developed the "bend-resistant low-reflection laminated glass" after years of research.

What is the secret behind the bending resistance? 

The potential of glass has reached its limit, and merely improving the flatness of glass yields limited bending resistance. In addressing the issue of spontaneous glass breakage, engineers utilized a layer of high-tech material"Adhesive layer" binds two sheets of low reflection glass together. How to further enhance the performance of this mysterious "adhesive layer"? Success, that's the key point!

We continue to enhance the flatness of glass while utilizing new high-tech materials.The "adhesive layer" holds the glass "in place," preventing further bending. This dual approach achieves excellent flexural resistance while also benefiting from the low-reflection properties of the laminated glass.Museum display cases have undergone a long evolution, but the transition from low-reflective laminated glass to the era of bend-resistant low-reflective glass has been so rapid! Isn't this a symbol of the rapid development of the Chinese museum industry?