As the technical lead for HC Aluminum's embossed aluminum sheet production line, drawing on years of practical experience in home appliance aluminum production and global export, we have customized and developed specialized embossed aluminum sheets for refrigerator inner panels, including low temperatures, high humidity, and food contact. From base alloy and embossing process to surface treatment, the entire supply chain is adapted to the needs of refrigeration appliance manufacturing, providing overseas refrigerator manufacturers with stable, compliant, and highly adaptable aluminum solutions.
The base material of embossed aluminum sheet for refrigerator inner panel is preferably 1050/1060 industrial pure aluminum or 3003 rust-resistant aluminum, with thicknesses ranging from 0.4mm to 1.2mm (mainstream matching 0.5mm/0.6mm/0.8mm), and widths from 600mm to 1250mm. Custom cutting to specific lengths is available to meet customer equipment requirements.
Patterns primarily feature orange peel, diamond, and pointer patterns, with a pattern depth of 0.1mm to 0.3mm, uniformity controlled within ±0.02mm, and a flatness ≤2mm/m.
The product is supplied in O/H12/H24 temper, suitable for stamping, bending, and riveting processes.
The product complies with EU RoHS, US FDA, and Chinese GB 4806 food contact standards, with heavy metal content far below regulatory limits.
Focusing on refrigerator operating conditions, three core technical characteristics have been developed to ensure product compatibility:
- Rust-proof and low-temperature resistant:
The 3003 alloy, optimized with manganese, exhibits no oxidation, peeling, or rust even under long-term use in the high-humidity condensation environment of a refrigerator's -18℃ freezer compartment. Its corrosion resistance is superior to conventional pure aluminum sheets.
- High-precision embossing:
Utilizing a proprietary precision roller pressing production line, patterns are formed in a single rolling process, free from cracks, missing patterns, and dark marks. The surface is scratch-free, with a stamping springback rate of ≤0.5%, ensuring stable compatibility with high-speed automated refrigerator liner production lines.
- Food-grade clean surface:
Completely oil-free treatment ensures a clean, residue-free, and odor-free surface. No harmful substances are released after assembly, fully meeting the food contact safety requirements for refrigerator liners.
The practical value of embossed aluminum sheet is highlighted from multiple dimensions, including cost reduction, energy saving, processing, and lifespan.
- Lightweight and cost reduction:
Aluminum density is 2.7g/cm³, reducing weight by over 30% compared to traditional sheet metal, lowering the overall weight of the refrigerator and transportation costs.
- Improved cooling efficiency:
The textured structure increases the heat exchange area, increasing the refrigerator's cooling speed by 5%–8%, contributing to overall energy saving and consumption reduction.
- High processing yield:
Bending radius can be as low as 1.5t, with a stamping forming rate of 99.5%, significantly reducing production losses for customers.
- Long lifespan:
Resistant to acids and alkalis, anti-aging, and with a lifespan matching the refrigerator's 10-year+ warranty period.
We have established a full-process online thickness measurement and laser flatness inspection system, and each batch undergoes comprehensive mechanical property and surface quality inspections. Export packaging uses moisture-proof film and reinforced wooden pallets, suitable for 40-day+ sea freight with moisture and scratch protection requirements. Our embossed aluminum sheet products are exported to Europe, America, Japan, South Korea, Southeast Asia, and other regions, serving numerous mainstream refrigerator brands. We boast a 99% on-time delivery rate and a customer complaint rate of less than 0.3%.
Based on technology and quality, we provide customized aluminum solutions. HC Aluminum's embossed aluminum sheets for refrigerator inner panels offer highly compatible aluminum solutions for global refrigerator manufacturers through customized technology, standardized quality, and stable delivery. We welcome technical collaborations and sample testing partnerships.