1145 Aluminum Foil Jumbo Rolls
1145 Aluminum Foil is a high-purity aluminum foil with an aluminum content of no less than 99.45%. As a typical representative of the 1000 series aluminum alloys, it offers excellent ductility, corrosion resistance, and thermal conductivity. Due to its stable chemical properties and outstanding formability, 1145 aluminum foil is widely used in industrial, packaging, and insulation applications where high purity and reliable performance are required. Compared to other aluminum materials, the 1145 alloy exhibits an ideal work-hardening rate. This facilitates extreme thinning during rolling to produce ultra-thin foils while simultaneously maintaining a smooth surface finish and an extremely low pinhole rate.
Description
Yutwin New Materials is committed to providing high-quality aluminum foil solutions to the global market, combining durability, safety, and cost-effectiveness. Our product range covers everything from standard household aluminum foil to industrial jumbo rolls and specialty aluminum foils. In addition to standard specifications, we also offer customized solutions based on customers’ technical requirements, including tailored thickness, width, surface treatment, and packaging options.
Features of 1145 Aluminum Foil
- Excellent Formability
Extremely soft and ductile, suitable for bending, folding, embossing, and complex forming processes.
- Outstanding Barrier Properties
Effectively blocks moisture, light, oxygen, and odors, making it ideal for packaging applications.
- Superior Corrosion Resistance
Performs reliably in humid and chemically exposed environments.
- Good Thermal & Electrical Conductivity
Ensures efficient heat transfer and stable electrical performance.
- Smooth & Clean Surface Finish
Uniform surface quality suitable for printing, coating, laminating, and adhesive applications.
- Lightweight & Flexible
Easy to process while maintaining consistent quality and handling performance.
- Food-Grade & Non-Toxic
Suitable for food, pharmaceutical, and medical packaging when produced to relevant standards.
- Environmentally Friendly & Recyclable
100% recyclable without loss of performance, supporting sustainable manufacturing.
Specifications
| Item | Description |
|---|---|
| Alloy | 1145 |
| Chemical Composition (%) | Al ≥ 99.45, Fe ≤ 0.55, Si ≤ 0.55, Cu ≤ 0.05, Mn ≤ 0.05, Zn ≤ 0.10, Ti ≤ 0.03, Others ≤ 0.05 |
| Aluminum Purity | ≥ 99.45% |
| Temper | O, H14, H16, H18, H19 |
| Thickness | 0.006 – 0.20 mm |
| Width | 100 – 1600 mm |
| Surface Finish | Single side bright / Double side bright |
| Form | Coil |
| Standards | ASTM, EN, GB/T, JIS |
1145 Aluminum Foil Surface Finishing Technology
- Electrolytic Cleaning
A customized waveform current control technology is applied to alternately perform anodic and cathodic reactions, effectively removing nano-scale oxide layers and trace oil residues from the aluminum foil surface. This process significantly enhances surface cleanliness while improving surface activity, providing an excellent interface for subsequent coating adhesion.
- Passivation Coating
A uniform 3 μm thick water-based acrylic resin coating is applied to the high-cleanliness substrate. This coating offers excellent corrosion resistance and chemical stability, effectively inhibiting oxidation while enhancing moisture resistance and resistance to aggressive media, thereby extending service life.
- Micro-Texturing Treatment
High-precision laser texturing technology is used to create a regular honeycomb-like microstructure on the aluminum foil surface. This structure provides excellent oil retention and flow-guiding performance, significantly improving lubrication properties and interfacial bonding strength in downstream lamination processes, while also enhancing wear resistance.
Typical Applications
Food & Pharmaceutical Packaging Foil
1145 aluminum foil serves as a critical material for flexible packaging, blister packs, and cold-form laminates. Due to its non-toxic and aseptic nature, it provides an absolute barrier against light, oxygen, moisture, and bacteria. With excellent dead-fold characteristics and compatibility with various heat-sealing lacquers, it ensures the long-term safety, hygiene, and freshness of pharmaceuticals and perishable foods.
Insulation Materials for Cables & Pipelines
In the telecommunications and power industries, 1145 foil is widely utilized as an EMI/RFI shielding layer to prevent signal interference and ensure data integrity. When applied to industrial pipelines, it functions as a high-performance vapor barrier and thermal shield, protecting the structure from corrosion, humidity, and extreme environmental conditions.
Heat Exchanger & Thermal Insulation Foil
Thermal Management & High-Reflectivity Insulation Solutions
Engineered for maximum heat transfer efficiency, 1145 alloy is a staple in the manufacturing of HVAC heat exchangers, automotive radiators, and condenser fins. Furthermore, as a radiant barrier in building insulation, it can reflect up to 97% of thermal radiation, significantly improving energy efficiency and reducing cooling/heating costs.
Industrial Wrapping & Protective Foil
1145 aluminum foil provides a robust protective layer for precision machinery, engine components, and large-scale equipment during long-term storage or transoceanic shipping. It shields valuable assets from moisture, salt spray, and oxidation. Its inherent toughness allows it to withstand mechanical stress while maintaining a secure, moisture-proof seal.
Capacitor Foil & Other Electrical Applications
It is essential for producing capacitor electrodes, battery current collectors, and transformer windings. The uniform grain structure of 1145 enables precise etching and ensures stable electrical performance in miniaturized electronic components.
