eps sandwich panel china exporter

Currently, common sandwich panel include EPS sandwich panel, PU/PIR sandwich panel and rock wool sandwich panel.   Generally speaking, the thicker the sandwich panel, the better the insulation effect. PU/PIR has the best thermal insulation performance, rock wool has the best fire resistance, and EPS has the highest cost performance，but no fireproof.   Due to the different properties of the core material, the application of sandwich panels with different core materials is also different, as detailed below.   Thickness EPS Sandwich Panel PU/PIR Sandwich Panel Rock wool Sandwich panel 50mm Suitable for interior wall partitions in ordinary workshops and factories where insulation requirements are not high, as well as prefabricated houses, temporary houses, temporary buildings on construction sites, and general storage. Suitable for roofs and walls of warehouses at normal temperatures, as well as steel structure exterior walls and roofs. Suitable for interior walls and partitions of ordinary factory buildings with high fire protection requirements and general insulation requirements, as well as walls of simple warehouses and temporary buildings. 75mm Suitable for industrial buildings with no strict temperature requirements, such as general warehouses, logistics warehouses, steel structure workshops, and livestock farms. Suitable for general cold storage and insulation, constant temperature workshops (such as electronics, packaging, light industry, etc.), food processing plants, beverage plants, pharmaceutical and electronics cleanrooms, etc. Suitable for general warehouses, logistics centers, office buildings, workshops, and showrooms. 100mm Suitable for walls and roofs of large factories and warehouses, stadiums, markets, and large steel structure buildings, etc. Suitable for industrial buildings, cold storage (0-5℃), food processing workshops, cold chain warehouses, etc., where high insulation and fire protection requirements are needed. Suitable for high-standard factories, cleanrooms, hospitals, schools, public buildings, etc. 150mm Suitable for buildings with high insulation requirements but limited budgets, such as ordinary factories and warehouses in cold regions. Suitable for high-end constant temperature and humidity workshops, pharmaceutical warehouses, low-temperature cold storage (-18℃), cold chain logistics centers, dairy, meat and seafood processing workshops, etc. Suitable for public buildings with strict fire protection requirements, large warehouses, long-span factories, and buildings with extremely high requirements for thermal insulation/sound insulation, such as concert halls.     In short, 50mm sandwich panels are suitable for interior walls, simple interior partitions, etc.; 75mm sandwich panels are suitable for ordinary factories and warehouses, etc.; 100mm sandwich panels are suitable for food factories and low-temperature cold storage, etc.; and 150mm sandwich panels are suitable for low-temperature cold storage and high-standard buildings, etc.

For successful international shipping, to use the correct loading method is very important, because sandwich panels need to be carefully packaged, loaded and transported--Once the loading procedure goes wrong, it may cause product damage and financial losses.   First of all, to make sure that the container condition meets transportation standards is the first step. Propanel will conduct a thorough inspection of the container before loading operations begin. If the container floor has protruding nails or sharp objects - the panel surfaces will get scratched easily - this can cause quality problem, finally leading to customer dissatisfaction.   Secondly, packaging and weight distribution calculations must be done before actual loading. It is recommended to use pallets to protect the bottom layer. Never load above the recommended height - otherwise damage may occur - ultimately resulting in the product being damaged and unable to be installed correctly.   Thirdly, security measures should be strictly done before loading. Key points such as angle brackets, protective plates, tension adjustment of straps, and filling of gaps between stacks require experienced workers to handle them according to standard operating procedures. Appropriate inflatable bags or air cushions should fill the empty space and prevent unnecessary movement of the container in rough sea conditions.  

Sandwich panels can be used in high humidity environments. Sandwich panels are usually constructed of a double-layer steel plate and a layer of core material, which can achieve a good moisture-proof effect by selecting a core material and a steel plate with moisture-proof performance, and by the correct sealing installation method. High humidity environments (such as coastal buildings, food factories, cold storage) need to prevent moisture penetration and corrosion. The steel plate serves as the outer defense line. Galvanized/aluminum zinc coated steel plates (with PVDF or polyester coating, salt spray resistance, rust resistance) are preferred, avoid un-coated steel plates or ordinary plywood (easy to rust, Water-absorbent layer); the core material needs to avoid porous water-absorbent types (such as ordinary EPS foam, untreated rock wool), choose closed-cell or hydrophobic models ——polyurethane (PU, closed-cell rate exceeds 90%, less water absorption), extruded polystyrene (XPS, high density, moisture-proof), this type of core material can prevent moisture from intruding and losing heat preservation or mold, and breeding bacteria.    At the same time, when the sandwich panel is installed, the joints and screw holes of the sandwich panel need to be sealed with weather-resistant sealant (such as silicone glue, butyl tape) to prevent moisture from penetrating through the gaps; 50-100mm ventilation gap can be reserved for enclosed spaces (such as walls) to reduce internal condensation water; stainless steel screws or galvanized screws are selected, and waterproof gaskets are used avoid formation after rusting “tidal channels”. Meanwhile, check the panel coating regularly for breakage, sealant cracking, etc. If small defects are found, repair them promptly to prevent the vulnerability from expanding.   Currently sandwich panels are widely used in various high humidity environments, such as food/aquatic processing plants, cold storage/cold chain warehouses, factory buildings in rainy areas in the south, and underground space/civil air defense engineering with their excellent moisture-proof and impermeable properties, high-quality thermal insulation/insulation, corrosion resistance, and the ability to be installed quickly.

Sandwich panels can be customized for design and size to meet exact project specs for sure.    Common sandwich panel’s thickness varies from 30mm to 300mm, and lengths from 400mm to 12000mm. Factories use automated cutting for precision during production. Quality checks test thickness fittings and core density to ensure standards. While the core materials of sandwich panel also allow custom options: EPS for light weight, rock wool/glass wool for sound control and fire safety, and PU/PIR for better insulation. As professional rock wool panel china manufacturer as well as china cold storage panel manufacturer—PROPANEL, is engaged to give the best products to customer.   The metal surface layers include steel sheet, aluminum plate, or stainless-steel sheet... Inspections verify material bonds and fire ratings with lab tests.   The paint types of metal surface offer customization: PE for basic protection, HDP for higher durability, SMP for higher weather resistance, and PVDF for longer color life. Panels go through roller coating in production for even finish. This step follows strict color matching. Final quality detection uses visual and machine scans to confirm paint adhesion and thickness.   Special shapes sandwich panels like triangles or circles satisfy unique needs. Molds shape panels during manufacturing for custom fits. These handles curved or angled designs. Production ends with load tests and seal checks to confirm strength. Such special quality control ensures panels perform in all kinds of buildings’ roofs or walls.