Vacuum Tempered Glass Sealing Technology Innovation: Low-Melting Glass Powder Breaks the Industry's

Against the backdrop of deepening "dual-carbon" goals and comprehensive upgrades in building energy efficiency standards, vacuum tempered glass has become a core energy-saving material in passive ultra-low-energy buildings, high-end appliances, rail transit, and other fields due to its ultra-low heat transfer coefficient, excellent sound insulation performance, and high safety rating. Market demand continues to rise. Edge sealing, as the core process in vacuum tempered glass production, not only directly determines the product's vacuum retention, service life, and safety performance but is also a key factor affecting the industry's large-scale cost reduction and market penetration.

1. Technical Core and Industry Pain Points: Walking a Tightrope Between Performance and Cost

The technical essence of vacuum tempered glass sealing is to form a permanent, absolutely airtight "welded" edge around two glass panes without damaging the surface compressive stress of the tempered glass. This edge must be completed at low temperatures (typically below the annealing point of tempered glass) to ensure the glass's tempering strength and impact resistance remain intact.

The current mainstream industry process uses silver paste or copper-based active metal solder, achieving sealing through precise coating and low-temperature sintering (400–450°C). This technical route is mature and stable, meeting performance requirements well. However, its fatal weakness lies in high material costs. The price of precious metal pastes remains high and is subject to fluctuations in the international market, making vacuum glass difficult to shed its "high-performance, high-price" label, severely limiting its application in broader civilian markets.

2. The Key to Breaking the Deadlock: The Disruptive Advantages of Low-Melting Glass Powder

Faced with this common industry challenge, low-melting glass powder, as an innovative inorganic sealing material, is driving a quiet yet profound technological transformation. Anmi Anywhere New Materials (Guangzhou) Co., Ltd., leveraging over a decade of in-depth R&D and mass production experience in low-melting glass powder, has launched a series of sealing-specific products that demonstrate significant potential to replace traditional metal solder:

Outstanding Cost Advantage: Low-melting glass powder primarily uses oxides such as silicon, boron, and zinc as raw materials, completely eliminating dependence on precious metals. Material costs can be significantly reduced, providing direct profit margins and market competitiveness for vacuum glass manufacturers.

Perfect Process Compatibility: Anypowder's low-melting glass powder can be precisely adjusted to melt within the 400–500°C range, perfectly fitting the existing vacuum glass sealing production line process window. After melting, it exhibits good wettability and fluidity, forming a strong chemical bond with the glass substrate to achieve high-strength, high-airtightness sealing.

Excellent Comprehensive Performance:

Adjustable Thermal Expansion Coefficient: The formula can be designed to match the glass substrate, reducing thermal stress and improving the long-term stability of the sealing interface.

Outstanding Chemical Stability: Resistant to acids, alkalis, and aging, ensuring the sealing layer's durability in complex environments and guaranteeing vacuum longevity.

High Insulation and Strength: The sealed body possesses good mechanical strength and electrical insulation, enhancing the overall reliability of the product.

Environmental Sustainability: Anmi Anywhere's product line includes lead-free, environmentally friendly formulas, complying with international environmental standards such as EU RoHS, meeting the requirements of green buildings and sustainable development.

3. Driving Industry Upgrades with Material Innovation

We are not just a supplier of low-melting glass powder but a leader in high-end inorganic functional powder solutions. The company possesses a complete technological chain from basic formula R&D, precise synthesis, ultra-fine grinding, to surface modification treatment, and operates a strict quality control and application testing laboratory. Its technical team has a deep understanding of downstream application processes and can provide customers with full-process technical services from material selection and formula support to process optimization.

In the field of vacuum glass sealing, Low-melting glass powder solution has passed pilot verification by several industry-leading enterprises, achieving significant cost reduction without sacrificing any key product performance. The application of this innovative material is breaking the technological and cost monopoly of precious metal solder in the industry, paving the way for the large-scale and popularized application of vacuum glass.

4. Looking Ahead: Empowering Green Buildings, Building a Low-Carbon Era Together

The successful application of low-melting glass powder in vacuum glass is just a starting point. With the continuous optimization of material systems (such as developing products with lower melting temperatures and higher bonding strength), it will further drive innovation in vacuum glass manufacturing processes, helping the entire industry reduce energy consumption and improve efficiency.

We will continue to focus on material technology, closely collaborate with industry chain partners, and jointly promote the widespread application of vacuum glass—an efficient energy-saving product—in more fields, contributing solid material strength to reducing building energy consumption and achieving "dual-carbon" goals. Choosing us means not only selecting a high-performance material but also choosing a reliable partner that drives your cost reduction, efficiency improvement, and future success through innovation.