Huanan Building Materials Upgrades Production Line with Longyu Glue Coating System
Published On: April 28, 2026
Huanan Building Materials (Shenzhen) Co., Ltd. (HBM), established in 1985 and listed on the Shenzhen Stock Exchange (002314), is a wholly-owned subsidiary of China Nanshan Development (Group) Inc. under China Merchants Group. HBM is a global leader in marine fire-resistant cabin system solutions and composite panel products, with an annual production capacity of 2.2 million square meters of metal composite rock wool/aluminum honeycomb panels. Its products serve over 500 shipbuilding enterprises across more than 40 countries, including luxury cruise ships, Ro-pax vessels, offshore oil platforms, bulk carriers, container ships, and oil tankers.
The Challenge
As part of its commitment to Industry 4.0 and intelligent manufacturing, HBM initiated a strategic upgrade of its existing composite panel lamination lines in early 2026. The objective was to address production bottlenecks, including inconsistent glue application resulting in delamination and bubbling issues, high material waste due to over-application and frequent rework, and low line efficiency with excessive downtime for cleaning and recalibration.
The Solution
After a comprehensive evaluation process, HBM partnered with Guangdong Longyu Machinery Equipment Co., Ltd. to retrofit its production lines with Longyu's advanced glue coating and laminating systems. The core equipment delivered included:
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LY-02-1300 Two-Component Curtain Coating Machine — featuring precise dual-component mixing, adjustable glue flow accuracy of ≤±5% (±5% flow accuracy), multi-roller pumping system for stable delivery, and adaptive width control ranging from 100mm to 1300mm. This ensures uniform glue application across the entire panel surface.
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Integrated Laminating Line — paired with the LY-07-3000 vacuum hot press system, enabling complete automation from glue coating to pressing and curing, ensuring consistent bonding for marine-grade composite panels.
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Space-Optimized Layout — the equipment was customized with a compact 6.5-meter length to fit seamlessly into HBM's existing workshop infrastructure.
Technical Highlights
| Parameter | Specification |
|---|---|
| Glue Flow Accuracy | ≤±5% (Five percent accuracy tolerance) |
| Coating Width Range | 100–1300mm (100 to 1300 millimeters auto-adaptive) |
| Maximum Line Speed | 10–12 m/min |
| Glue Application Range | 120–400 g/m² |
| Glue Type | Two-component (Dual-component reactive adhesives) |
| Temperature Resistance | Up to 165°C (for PUR adhesives) |
The Results
Since the installation and commissioning in Q2 2026, HBM has reported significant improvements:
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40% reduction in adhesive waste — The precise metering and flow control of the LY-02-1300 eliminated excessive glue application.
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Zero delamination in finished panels — Uniform coating and controlled curing under the vacuum hot press ensured superior bond strength, and the issue of panel bubbling was completely resolved.
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30% increase in overall line efficiency — Reduced downtime for cleaning and recalibration allowed continuous production with less interruption.
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Lower operator intervention — The PLC-controlled human-machine interface simplified operation and reduced manual adjustments.
Customer Testimonial
"The upgrade to Longyu's glue coating and laminating system has significantly stabilized our composite panel quality. The LY-02-1300's glue flow accuracy has completely eliminated our previous issues with panel bubbling. The equipment runs smoothly, and the after-sales support has been prompt whenever we need assistance. We plan to extend this cooperation across additional production lines in the near future."
— Senior Production Manager, Huanan Building Materials (Shenzhen) Co., Ltd.
