Shanghai Zhongji PU Sandwich Panel Line – High-Precision Continuous Production Equipment for Premium Thermal Insulation Panels

Focusing on high-end energy-saving construction and global cold chain engineering sectors, Shanghai Zhongji specializes in the R&D and manufacturing of professional PU sandwich panel line equipment. Tailored for large-scale, continuous and standardized mass production of high-performance polyurethane and PIR flame-retardant thermal insulation composite panels, this production line adopts mature and advanced continuous forming technology. With decades of professional experience in energy-saving building material equipment, it fully meets the stringent manufacturing standards of high-end insulation materials, helping global manufacturers produce premium-quality PU and PIR sandwich panels for various high-standard construction projects.

PU and PIR foam core sandwich panels are globally recognized as high-efficiency energy-saving green building materials, featuring ultra-low thermal conductivity, superior thermal insulation, excellent waterproof performance and stable flame retardancy. These premium composite panels are widely applied in high-standard cold storage warehouses, quick-frozen logistics depots, pharmaceutical clean workshops, food processing plants, constant-temperature greenhouses and ultra-low energy consumption industrial buildings. They serve as ideal core enclosure materials for modern energy-saving and eco-friendly construction projects across the globe.

Our professional PU sandwich panel production line is equipped with imported high-pressure foaming units and precision proportional feeding systems, enabling real-time and accurate adjustment of polyurethane raw material mixing ratios. The intelligent batching system ensures uniform foam density and fine, dense internal pores in the panel core, completely eliminating common defects such as core hollowing, cracking and uneven foaming. The equipped self-cleaning mixing head effectively prevents blockages, reduces raw material waste and production losses, and supports long-term, uninterrupted and stable foaming operations for the entire equipment.

The full PU sandwich panel line adopts an extended 24-meter constant-temperature dual-belt pressing system to build a stable and constant-temperature forming environment for composite panel molding. Even under high-speed continuous production, the system precisely controls panel thickness, surface flatness and overall uniformity. It realizes integrated one-piece molding of color steel sheets, aluminum sheets and PU foam core layers, achieving tight, gap-free lamination without bulging, deformation or degumming, which significantly enhances the flatness and structural stability of finished composite panels.

This high-precision PU sandwich panel production line features an adjustable production speed of 4 to 7 meters per minute and customizable panel thickness ranging from 30mm to 200mm, covering all mainstream specifications of high-end thermal insulation panels. Finished PU sandwich panels deliver ultra-low thermal conductivity, outstanding waterproof and moistureproof performance, and stable B1-grade flame retardancy. All technical indicators fully comply with international energy-saving codes and global building fire safety standards, perfectly meeting the acceptance requirements of various high-standard overseas engineering projects.

Different from traditional intermittent sandwich panel production equipment with discontinuous procedures and low output efficiency, our continuous PU sandwich panel line achieves fully automated non-stop mass production. It avoids production intervals and process errors caused by frequent equipment startup and shutdown, effectively boosting overall production capacity and finished product qualification rate. The standardized and streamlined production process fully satisfies the large-scale, standardized and high-efficiency production demands of medium and large high-end building material enterprises.

Shanghai Zhongji offers comprehensive turnkey services for global clients, including personalized equipment upgrading, customized PU sandwich panel production line design, on-site installation and commissioning, professional technical training and 24-hour online after-sales support. We help global building material manufacturers deeply explore the high-end energy-saving building material market, optimize production efficiency, reduce comprehensive operating costs, and continuously improve production economic benefits and core market competitiveness.