8079 O Temper Oxygen Barrier Aluminum Foil
I. Product Overview
8079 O Temper Oxygen Barrier Aluminum Foil is a high-performance soft-tempered foil specifically engineered for high-barrier flexible packaging scenarios. Belonging to the 8XXX series aluminum alloy system, it serves as a core packaging substrate ideal for applications requiring ultra-low oxygen permeability, zero contamination, and superior deep-processing performance.
As a premium packaging-grade aluminum foil, 8079 O Temper foil offers irreplaceable advantages in high-end food, pharmaceutical, lithium battery, and vacuum composite packaging sectors. Its unique alloy composition and soft processing characteristics ensure structural integrity even after ultra-rolling and multi-layer lamination, resolving common issues found in standard foils such as poor barrier properties, cracking, and high pinhole density. It is the preferred material for global high-standard barrier packaging solutions.
II. Properties of 8079 Aluminum Alloy
2.1 Chemical Composition of 8079 Aluminum Alloy
The exceptional performance of 8079 Oxygen Barrier Aluminum Foil stems from its stable and precise chemical composition. By accurately controlling iron (Fe) and silicon (Si) levels, the internal microstructure is optimized to fundamentally enhance flexibility and barrier performance. The specific parameters are as follows:
| Element | Content |
|---|---|
| Iron (Fe) | 0.7% – 1.3% |
| Silicon (Si) | 0.05% – 0.30% |
| Copper (Cu) | ≤ 0.05% |
| Manganese (Mn) | ≤ 0.10% |
| Magnesium (Mg) | ≤ 0.05% |
| Aluminum (Al) | ≥ 98.22% |
2.2 Core Advantages of 8079 Alloy
Leveraging an optimized high-iron, low-silicon formula, 8079 alloy outperforms standard packaging foils by balancing processability with functional barrier properties. Key advantages include:
- Excellent Flexibility: Uniform and fine internal grain structure provides high bending resistance, preventing cracks during repeated folding, suitable for various soft-packaging forming processes.
- High Elongation: Superior tensile ductility allows for ultra-thin rolling and maintains structural stability during high-speed stretching and lamination.
- Extremely Low Pinhole Rate: Strict compositional control eliminates internal impurities, resulting in a pinhole density far below industry standards, ensuring a robust barrier foundation.
- Superior Lamination Performance: A clean, smooth surface offers strong adhesion affinity with films like PET, PE, and PA, preventing delamination or blistering post-lamination.
- Ultimate Barrier Capability: The dense metallic structure achieves ultra-low permeability for gases and moisture, providing comprehensive protection against oxygen and water vapor ingress.
III. Core Performance Advantages of Oxygen Barrier Aluminum Foil
3.1 Outstanding Oxygen Barrier Performance
8079 O Temper foil exhibits a near-zero oxygen transmission rate, completely isolating external oxygen. For oxidation-sensitive products like coffee powder, milk powder, and pharmaceuticals, it effectively inhibits oxidative deterioration and rancidity, significantly extending shelf life. Unlike single-layer plastic films, its barrier performance remains unaffected by temperature or humidity changes, offering persistent and stable protection.
3.2 Excellent Moisture Resistance
The dense metallic crystal structure effectively blocks moisture penetration, preventing product caking, mildew, and spoilage. It maintains pressure balance inside the package in high-humidity environments, ensuring product dryness—ideal for long-term storage and cross-regional transportation.
3.3 Light Shielding and Anti-Pollution Properties
Aluminum foil possesses natural full light-shielding properties, blocking UV rays and visible light to prevent photodegradation, fading, and loss of efficacy. Its clean, sterile surface also isolates dust, bacteria, and chemical pollutants, meeting the high hygiene standards of the food and pharmaceutical industries.
3.4 Ultra-Low Pinhole Rate
Through precise alloy ratios and advanced rolling/annealing processes, 8079 O Temper foil achieves extreme pinhole control. Even at ultra-thin gauges (0.006mm–0.09mm), it maintains minimal pinhole density, eliminating barrier failure caused by micro-perforations and ensuring overall seal integrity.
3.5 Stable Heat Sealing and Lamination Performance
The soft-tempered foil exhibits excellent surface bonding activity, allowing tight lamination with various packaging films (PET, PE, PA, CPP) via dry lamination, extrusion coating, etc. It offers stable heat-sealing performance with strong, crack-free seals, perfectly adapting to high-speed automated packaging lines.
IV. Core Application Fields
Thanks to its ultimate oxygen/moisture barrier properties, ultra-low pinhole rate, and excellent processing performance, 8079 O Temper foil is a core substrate in the high-end flexible packaging industry. It serves as an upgrade over standard plastic barrier films and conventional 8011 aluminum foil across multiple sectors:
4.1 Food Packaging
It is the core material for high-barrier food packaging, customized for foods prone to oxidation, moisture absorption, and requiring high flavor retention. It leverages zero oxygen permeability, total light shielding, and stable fresh-lock characteristics.
- Applications: Premium coffee vacuum packaging, freeze-dried coffee powder composite bags, infant formula milk powder packaging, meal replacement powder packaging, cooked food retort pouches, nut/dried fruit preservation, fresh meat/pre-made meals, high-end snack packaging, and high-quality pet food packaging.
- Advantage: Effectively prevents oxidation, mold, and flavor loss, maintaining original nutrition. Suitable for supermarket display, long-distance transport, and ambient storage.
4.2 Pharmaceutical Packaging
Compliant with FDA, GMP, and pharmaceutical hygiene standards, this non-toxic, clean-surface foil ensures drug stability and safety.
- Applications: Blister packaging (tablets, capsules, suppositories), medical sterile pouches, pharmaceutical powder/granule bags, ointment tube substrates, medical dressing individual packs, and disposable medical supplies packaging.
- Advantage: Isolates oxygen, moisture, bacteria, and UV rays, preventing drug caking, degradation, and contamination. Suitable for ambient storage, cold chain transport, and sterile environments.
4.3 Lithium Battery Packaging Materials
In the new energy sector, 8079 O Temper foil serves as the core inner substrate for lithium battery aluminum plastic film (aluminum laminate film).
- Advantage: Its ultra-low pinholes, high barrier properties, deep-drawing formability, and bend-resistance ensure structural integrity during stamping and sealing. It prevents moisture ingress, electrolyte leakage, swelling, short circuits, and oxidation failures.
- Applications: Consumer electronics batteries (phones, earbuds, power banks), EV power batteries, energy storage batteries, and custom-shaped soft-pack batteries.
4.4 Vacuum Packaging
The full-soft temper allows the foil to conform seamlessly to product shapes without dead corners. After vacuuming, it remains crack-free, airtight, and non-rebounding, maintaining a high-vacuum state long-term.
- Applications: High-end fresh meat, seafood, frozen food, dried specialties, precision hardware parts, electronic components, precision instrument accessories, and military small items.
- Advantage: Prevents food spoilage, part rust, and moisture damage. Solves common pain points like leakage and breakage associated with ordinary vacuum bags.
4.5 High-Barrier Composite Soft Packaging
As a versatile composite substrate, it can be strongly laminated with PET, PE, PA, CPP, etc., supporting printing, coating, deep drawing, and folding.
- Applications: Fine chemical raw material packaging, high-end cosmetics (essence, cream, mask) packaging, high-precision electronic component anti-static packaging, pesticide sustained-release packaging, and luxury gift packaging.
- Advantage: Stable physical/chemical properties and strong adhesion meet the high-protection needs of high-value-added products.
V. Product Specifications
We offer standardized and customizable 8079 O Temper Oxygen Barrier Aluminum Foil to meet diverse production needs:
| Item | Parameter |
|---|---|
| Alloy | 8079 |
| Temper | O (Fully Annealed/Soft) |
| Thickness | 0.006mm – 0.09mm |
| Width | 100mm – 1600mm |
| Surface Finish | One side bright / Both sides bright |
| Core Inner Diameter | 76mm / 152mm |
| Pinhole Grade | Ultra-Low Pinhole |
| Processing Method | Lamination / Printing / Deep Drawing |
VI. Why 8079 Aluminum Foil is Ideal for Barrier Packaging
6.1 Natural Metallic Barrier
Aluminum has a dense atomic structure that physically blocks oxygen, moisture, and light. Unlike plastic films relying on chemical coatings, 8079’s physical barrier does not degrade due to wear, temperature fluctuations, or aging.
6.2 Excellent Ultra-Thin Processability
8079 offers superior ductility and rolling performance, enabling stable production of foils below 0.01mm without cracking or perforation, aligning with the trend toward lightweight packaging.
6.3 Strict Pinhole Control
Precise composition control minimizes internal impurities and defects, solving the core issue of gas permeability in ultra-thin foils.
6.4 Outstanding Flexibility and Formability
The O temper ensures excellent bending and stretching capabilities, accommodating complex processes like deep drawing, folding, and twisting without deformation.
6.5 Tailored for High-End Composites
Its clean, oil-free surface and stable chemical properties make it the designated material for high-standard food, pharmaceutical, and composite packaging, outperforming plastics which may deform or age under harsh conditions.
VII. Comparison: 8079 vs. 8011 Aluminum Foil
While both belong to the 8XXX series, 8079 is an upgraded alloy for high-end applications, excelling in thin-gauge processing and flexibility:
| Comparison Item | 8079 Aluminum Foil | 8011 Aluminum Foil |
|---|---|---|
| Flexibility | Excellent (High bending resistance, no cracking) | Good (Slightly brittle in ultra-thin states) |
| Barrier Performance | Ultra-high (Near zero oxygen transmission) | Standard (Higher permeability) |
| Pinhole Control | Ultra-low, industry-leading | Standard, meets basic criteria |
| Ultra-Thin Processability | Strong, stable forming below 0.01mm | Average, prone to cracking when ultra-thin |
| High-End Adaptability | Food, Pharma, Lithium Batteries | General daily chemicals, standard food packaging |
Conclusion: 8011 is suited for low-to-mid-end general packaging, while 8079 O Temper is the premier choice for high-precision, high-reliability packaging upgrades.
XI. Why Choose Henan Huawei Aluminum Co., Ltd.?
11.1 Stable Capacity & Bulk Delivery
As a large-scale integrated manufacturer covering casting, rolling, annealing, slitting, and testing, we operate a 300,000-ton annual production line. We maintain sufficient safety stock for 8079 O Temper foil, ensuring uninterrupted supply for large orders, export shipments, and urgent requests without delays.
11.2 Imported Precision Equipment
Equipped with Honeywell thickness gauging systems, Siemens flatness control systems, and CNC slitters, we achieve micron-level accuracy with thickness tolerance strictly controlled within ±0.001mm, eliminating common defects like waviness and gauge bands.
11.3 Superior Surface Quality
Utilizing refined annealing and dust-free rolling, our foil features a clean, oil-free, spotless surface with moderate tension. It is perfectly compatible with dry lamination, extrusion coating, solvent-free lamination, and printing, ensuring strong bonds and no delamination.
11.4 Full-Process Smart Inspection
We implement a full-link QC system with online smart pinhole detectors and visual inspection equipment for 100% scanning. This ensures strict control over pinhole density, especially for ultra-thin specifications (0.006mm–0.09mm).
11.5 Customization Services
We support full-dimensional customization regarding thickness, width, surface brightness, coil diameter, and weight. We offer small-batch trials and mass production with supporting services like slitting and rewinding.
11.6 Global Compliance & Experience
With 20 years of export experience, our products are shipped to over 70 countries. Certified by FDA, SGS, RoHS, ISO9001, and GMP, we meet international standards for food, pharma, and lithium battery packaging, providing complete export documentation and support.
XII. Frequently Asked Questions (FAQ)
Q1: Which industries use 8079 Oxygen Barrier Aluminum Foil?
A: Primarily high-end barrier packaging: food, pharmaceuticals, lithium battery pouches, vacuum packaging, and industrial composite films.
Q2: What does “O Temper” mean?
A: O Temper refers to the fully annealed soft state. After high-temperature treatment, the foil is stress-free, soft, and highly ductile, making it optimal for deep processing.
Q3: Which has better barrier performance, 8079 or 8011?
A: 8079 is significantly better. It offers lower OT/OWTR rates and fewer pinholes, suitable for long-shelf-life products, whereas 8011 is for standard applications.
Q4: Is it suitable for vacuum packaging?
A: Yes. Its flexibility and conformability allow it to maintain a stable vacuum state long-term, ideal for food and precision parts.
Q5: Does it support lamination?
A: Absolutely. It bonds excellently with PET, PE, PA, etc., via all major lamination processes.
Q6: Can thickness and width be customized?
A: Yes. We offer full customization (Thickness: 0.006mm–0.09mm; Width: 100mm–1600mm).
Q7: How do you guarantee low pinhole rates?
A: Through three steps: precise alloy formulation, multi-pass precision rolling, and 100% online pinhole scanning.
XIII. Conclusion
8079 O Temper Oxygen Barrier Aluminum Foil is a professional, high-standard barrier packaging solution integrating ultra-strong oxygen resistance, moisture resistance, light shielding, and anti-pollution functions. Backed by optimized alloy formulas and soft tempering, it solves the pain points of conventional materials. With global certifications and stable supply capabilities, Henan Huawei Aluminum is ready to provide high-quality solutions for your packaging needs. Contact us for samples, technical data, or bulk inquiries.
