Aluminum Foil Roll for Kitchen Use and Packaging
Aluminum foil rolls remain an indispensable product in both domestic kitchens and industrial packaging sectors due to their versatility, strength, and exceptional barrier properties.
Aluminum foil is a thin sheet derived from an aluminum alloy, rolled and processed to reach thicknesses typically ranging between 6 to 100 microns (μm). Its unique physical and chemical properties make it ideal for food storage, cooking, and protection, as well as in packaging for pharmaceuticals, electronics, and other sensitive goods.
Features of Aluminum Foil Roll for Kitchen Use and Packaging
| Feature | Description |
|---|---|
| Material Composition | Made of high-purity aluminum (typically 99%+ Al content) ensuring food safety and inertness. |
| Thickness Range | Standard culinary foils range from 11 to 23 microns; packaging foils can be up to 100 microns. |
| Surface Finish | Available in bright (shiny) or matt finish for different appealing looks and functional purposes. |
| Mechanical Strength | Excellent tensile strength and resistance to tearing/stretching despite being thin and flexible. |
| Thermal Conductivity | High thermal conductivity enables even heat distribution for cooking and baking applications. |
| Corrosion Resistance | Resistance to moisture, oxygen, UV light, and microorganisms helps prolong product freshness. |
| Non-toxic & Biodegradable | Safe for direct food contact, aluminum foil is non-toxic and has no harmful leachables. |
| Barrier Properties | Acts as a nearly impermeable barrier to gases, aromas, moisture, light, and bacteria. |
| Custom Sizing | Available in various widths, lengths, and roll diameters to suit individual kitchen and industrial needs. |
Chemical Composition and Properties
Generally, aluminum foils used for food and packaging stem from 99% pure aluminum, combined with specific alloying elements for improved processability.
| Element | Typical Composition (%) | Purpose/Effect |
|---|---|---|
| Aluminum (Al) | 98.5 – 99.5 | Base metal; offers ductility, corrosion resistance |
| Iron (Fe) | 0.4 – 0.8 | Improves strength and workability |
| Silicon (Si) | 0.15 – 0.25 | Helps in corrosion resistance |
| Copper (Cu) | ≤ 0.1 | Enhances strength at the expense of ductility |
| Others (Zn, Mn, Mg) | ≤ 0.1 | Trace additions, minor effects |
Note: Lower impurities are especially important for food-grade foil.
Properties:
- Density: ~2.7 g/cm³
- Melting Point: 660.3 °C
- Thermal Conductivity: Approx. 235 W/(m·K)
- Electrical Conductivity: Approx. 59 x 10^6 S/m
Applications
1. Kitchen Use
- Cooking & Baking: Ideal for wrapping food directly for oven or grill cooking. The foil reflects heat efficiently while maintaining moisture, ensuring evenly cooked meals.
- Food Storage: Able to tightly enclose leftovers to prevent odors and keep food fresh in refrigerators and freezers.
- Marinating and Steaming: Sealing foods in foil packets helps preserve juices and vibrancy of flavor.
- Liners & Drip Pans: Protects oven trays or grill grates for easy cleaning of grease or drippings.
- Household Hacks: Includes homemade molds, storing frozen veggies, DIY grilling wraps.
2. Packaging Industry
- Pharmaceutical: Packs tablets and capsules owing to excellent packaging shield against humidity and oxygen.
- Cosmetics: Food-grade foil used for deodorant caps, soap wrapping ensures product preservation.
- Electronics: Protects sensitive components from static and physical damage during transit.
- Food Packaging: For snacks, confectionery, dairy, and ready-to-eat meals providing superior hygienic packing.
- Industrial Uses: Tensile strength folds to protect mechanical and optical products from environmental damage.
Technical Specifications Table
| Parameter | Range / Value | Remark |
|---|---|---|
| Alloy Grade | 1100-H14 / 8079 | Common kitchen and packaging grades |
| Thickness | 11 – 100 microns | Depends on kitchen (thin) or industrial (thicker)use |
| Roll Width | 30 – 1200 mm | Customized cuts to order |
| Roll Length | 15 – 200 meters | Available based on thickness & customer needs |
| Tensile Strength | 105 – 145 MPa | Sufficient for tear resistance |
| Elongation at Break | ≥10% | Ensure flexibility for wrapping |
| Surface | Bright or Matte | Bright for aesthetic, matte for non-stick wrapping |
| Compliance | FDA, EU Regulation for food contact | Certified safe for direct food contact products |
Handling and Storage
Aluminum foil rolls should be stored in a cool, dry environment to avoid unwarranted oxidation or physical damage. Reels must remain tightly wound and protected from contamination or moisture ingress until use.
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