Why Does the Automotive Industry Demand Such High Standards for PU Adhesive Packaging? --Inside the GRQY-3500-I Horizontal Aluminum Cartridge Filling

Recently, one set of aluminum cartridge filling machine destined for export to Russia sparked an interesting discussion. The client noticed that some PU adhesives on the market are packaged in Alu-plastic cartridges and requested to switch from pure aluminum tubes to this new packaging type.

At first glance, this might seem like a simple material substitution — but we didn’t immediately agree. Instead, we suggested: “Let’s test it first.”

Because in the automotive PU sealant industry, packaging is not merely a container — it’s an integral part of the product’s performance. Even the slightest imperfection, such as insufficient sealing strength or trapped air bubbles, can result in adhesion failure or shortened shelf life. For PU adhesives used in automotive windshield bonding, zero risk is the only acceptable standard.

Upon receiving the client’s request, we immediately organized the most critical step of the packaging process: comprehensive sealing and crimping tests. After repeated trials and evaluations, the client ultimately decided to continue using aluminum cartridge packaging — because when it comes to product stability and safety, there can be no compromise.

Bridging Precision and Responsibility — Introducing the GRQY-3500-I

This experience reminded us of what truly defines Great Machinery: precision, consistency, and responsibility. To meet the automotive industry’s uncompromising standards, we rely on one of our most representative models — the GRQY-3500-I Horizontal Aluminum Cartridge Filling Machine.

It’s not just a piece of equipment, but the embodiment of how Great Machinery translates customer challenges into engineering excellence.

1. Equipment Highlights: GRQY-3500-I Fully Automatic Horizontal Aluminum Cartridge Filling Machine

This core model, independently developed by Great Machinery, integrates every key process required in PU adhesive production:

• Automatic tube feeding and tail plug loading
• Precision servo-driven transfer system
• High-accuracy quantitative filling (±1.5g / 300ml)
• Automatic tail sealing with air exhaust function to ensure bubble-free sealing
• Automatic desiccant insertion
• Aluminum cap crimping and sealing mechanism
• Automatic rotating inkjet coding

With a production capacity of 18~25 tubes per minute, the machine uses a hydraulic drive system combined with INNOVANCE PLC + touch screen control for stable operation and easy maintenance.

Whether for silicone sealant, modified silane, or PU adhesive, the GRQY-3500-I guarantees that every cartridge meets the highest standards of sealing integrity, dosage accuracy, and appearance quality.

2. Nearly Two Decades of Dedication --Setting the Benchmark in China

Since 2008, Great Machinery has focused on the R&D and production of automated packaging equipment for sealants, growing in step with the rise of China’s sealant industry.

In the domestic market, our aluminum cartridge filling machine stands as a core and iconic product, symbolizing our technical depth and reliability.

This is one of the key reasons why PUSTAR, China’s largest PU adhesive manufacturer, has maintained a long-term partnership with us.

Even though competitors have tried to replicate our system, none have succeeded in matching its performance and precision.

Beyond PUSTAR, our partners include Silicone King (Silicone Valley of China), ShinEtsu, Xinghuo, Changlu, Silande, and Hoshine, among many others.

These clients cover a wide range of industries — silicone sealants, polyurethane, and modified silane adhesives —

and their continued trust stands as the highest recognition of Great Machinery’s equipment stability and reliability.

3. Innovation Means Foresight, Not Just Change

True innovation is not merely about “offering an alternative solution.” It’s about foreseeing risks and challenges before customers even raise them.

At Great Machinery, we believe that an exceptional equipment manufacturer should not only provide machines, but also empower customers to make safer, smarter decisions.

From testing composite cartridges to conducting risk analyses and proposing balanced solutions, we always stand on the client’s side — safeguarding both production safety and product quality.

This is the essence of Great Manufacturing Responsibility.

4. Epilogue: Great Machines Empower Great Adhesives

Across the automotive, construction, electronics, and renewable energy sectors, sealants silently hold together the very foundations of modern industry. And every Great machine we build exists for one purpose — to ensure that this invisible bond of quality is delivered with precision, efficiency, and consistency.

At Great Machinery, we believe that the true end goal of manufacturing is not just building machines, but enabling our clients to achieve flawless production, every single time.

Great Machinery — Where Precision Engineering Meets Global Trust.