PU Hollow Brick: High-Strength Composite Wall Panel

   Wall materials have long been a trade-off between "performance" and "aesthetics": stone and metal are high in strength but heavy and complex to install; wood has a good texture but is moisture and fire-prone; plastic is lightweight but easily deformed. The PU Geometry Series, based on polyurethane, undergoes continuous foaming/molding, glass fiber reinforcement and flame-retardant treatment, achieving high strength, light weight, Class A2 fire resistance and zero formaldehyde, balancing practicality and aesthetics.

1.Product Overview

   The PU Nine-Grid Geometric Wall Panel belongs to the PU Geometry Series. It uses high-density polyurethane (PU resin) as the core material, and can be added with glass fiber (5-15%) to enhance rigidity or aluminum hydroxide flame retardant to achieve Class A2 fire resistance according to project needs. The surface is covered with a functional coating, supporting various treatments such as UV high-gloss/matte, metal wire drawing, wood grain transfer printing, stone grain imitation, and anti-static.

   Different from traditional foamed PU decorative panels, this product has a flexural strength of ≥80MPa, a water absorption expansion rate of ≤0.3%, a sound insulation performance of ≥35dB, and a temperature resistance range of -40°C to 120°C. It can be widely used in building interior and exterior walls, ceilings, partitions, transportation facilities (ship/high-speed rail interiors), industrial facilities (hospitals/laboratories/computer rooms) and special scenarios (cold chain, children's spaces). Its installation adopts a buckle or magnetic suction system without keels, shortening the construction period by 60%, and the service life can be as long as 20 years.

2.Technical Parameters

   Note: Special functions include nano-silver ion antibacterial (antibacterial rate ≥99%), anti-static (surface resistance ≤1×10⁶Ω), anti-ultraviolet (yellowing ΔE≤1.5), etc.

3.Core Product Advantages

• High Strength and Impact Resistance: Flexural strength ≥80MPa, load-bearing capacity over 50kg, impact resistance twice that of traditional PS wall panels (rigidity is better with glass fiber added).
• Lightweight Design: 12mm thick panels only weigh 2.5kg/㎡ (about 1/4 of solid wood and 1/5 of metal), which can be directly installed on light steel keels or old walls without reinforcing the base course.
• Sound and Thermal Insulation: Closed-cell rate ≥90%, sound insulation ≥35dB, thermal conductivity as low as 0.022W/(m·K), suitable for recording studios, hotels, cold storage and other scenarios.
• Class A2 Fire Resistance + Zero Formaldehyde: Some models achieve Class A2 non-combustible, flame spread ≥60 minutes; formaldehyde emission ≤0.03mg/m³ (ENF Class), passing GREENGUARD Gold Certification, suitable for hospitals and schools.
• Multifunctional Finishes: Optional UV coating (wear resistance 5000 revolutions), metal wire drawing, wood grain/stone grain, anti-static (10⁶Ω), antibacterial (≥99.9%) and other treatments, adapting to different scenarios.
• Efficient Installation: Buckle or magnetic system, no keels/welding required, construction period shortened by 60%, no dust or noise, suitable for renovation and operating venues.
• Weather and Corrosion Resistance: Stable in the temperature range of -40℃~120℃, anti-ultraviolet yellowing ΔE≤1.5; acid and alkali resistant (pH 1-14), can be used in laboratories and coastal high-salt mist environments.

4.Typical Application Scenarios

• Architectural Decoration: Interior walls/ceilings of hotel lobbies, exhibition halls and villas, using metal wire drawing or wood grain transfer printing to enhance texture.
• Partition Wall Panels: Commercial space partitions or areas with high seismic requirements, using high flexural strength to ensure safety.
• Transportation Facilities: Ship and high-speed rail interiors (Class A2 fire resistance + zero formaldehyde), sound insulation walls of airports and stations (sound insulation ≥35dB).
• Industrial and Public Facilities: Hospitals and laboratories (antibacterial + corrosion resistant); computer rooms and warehouses (anti-static + moisture and mold proof).
• Special Scenarios: Cold chain logistics (resistant to -40°C low temperature, thermal conductivity 0.022W/m·K); children's spaces and nursing homes (rounded corner anti-collision design + anti-static).

5.Case Study: LOUIS VUITTON Qiantai Taikoo Li Flagship Store, Shanghai

Project Background
   The Louis Vuitton Qiantai Taikoo Li flagship store in Shanghai completed its second-phase interior upgrade in 2024. As a key image store for the brand in mainland China, it needed to maintain a luxurious character while incorporating modern building materials and sustainable design principles. The original walls used traditional wood veneer and stone dry-hanging, which had two issues: some areas did not meet the brand's latest global fire safety standards (requiring A2 rating), and the fixed display layout could not accommodate the flexibility needed for seasonal product changes. The brand sought a high-strength, lightweight, A2 fire-rated, and rapidly reconfigurable wall system.

Solution Selection
   After extensive comparison, the project team selected PU Hollow Brick geometric panels (model D005, size 1200×600×30 mm). The surface finish was a matte metallic gray UV coating, aligning with LV's signature gray metal accents and industrial design language. Key performance criteria met:

• Flexural strength ≥80 MPa, capable of supporting heavy display racks and LED flexible screens.
• A2 fire rating (EN 13501-1), certified for China's fire protection requirements.
• ENF zero formaldehyde, meeting LEED v4.1 indoor environmental quality standards.
• Magnetic mounting system, no framing or adhesives required, allowing single-panel replacement later.

Installation Process
   The construction area included the ground floor women's section feature wall, the second floor men's section atrium column cladding, and the VIP room full wall – a total of approx. 520 m². The installation team laid magnetic metal base frames on the existing flat walls, then directly attached the PU panels magnetically. Panels were butted with gaps ≤1 mm. The modular 9-grid geometry matched the store's facade module, requiring no on-site cutting. The work was carried out in two phases with nightly operations, completing all installation in just 8 nights without disrupting daytime store activity.

Results & Feedback
   After completion, the walls present a regular semi-three-dimensional geometric array. Under lighting, the metallic gray coating produces subtle gradients that visually echo LV's classic stack of trunks. The merchandising team reported that the magnetic mounting system allows them to adjust display fixtures quarterly – simply remove panels with suction cups, reposition the magnetic bases, and reattach – without damaging the walls. One year after opening, the panels show no scratches, fading, or detachment. The project was nominated for the 2024 Asia-Pacific Luxury Retail Space Green Innovation Award.

6. Quality Testing & Reports

7. Manufacturer Information

   PU Hollow Brick geometric panels are developed and manufactured by Haining Longtime Industry Co., Ltd. Founded in 2003, the company is headquartered at No. 10-1 Lianhong Road, Yuanhua Town, Haining City, Zhejiang Province. It operates three production bases in Zhejiang, Guangdong, and Guangxi within China, as well as an overseas factory in Pakistan, with an annual output value of approximately RMB 150 million. The company specializes in R&D and production of polyurethane decorative panels and high-performance composite materials, exporting to more than 50 countries and regions including the United States, the United Kingdom, Japan, and Australia.

   The company has a complete industrial chain from mold design, formulation compounding, foaming forming to surface coating, supporting OEM/ODM customization. It provides on-site installation technical guidance and standard operation videos for large-scale projects.

   For samples, quotes, or technical inquiries:

• Website: http://www.ltpvcfactory.com
• WhatsApp: +86 17757302351
• Email: [email protected]
• Sample policy: Free samples and catalogs provided; shipping on consignee's account.