7 Micron 8079 Fleksibel emballasje aluminiumsfolie: The Ultra-Thin Powerhouse of Modern Packaging

In the competitive landscape of flexible packaging, 7 mikron 8079 flexible packaging aluminum foil stands out as a precision-engineered solution that balances ultra-thinness, barrier performance, and processability.

This specialized material bridges the gap between lightweight packaging demands and strict preservation requirements, becoming a staple in food, farmasøytisk, and new energy industries.

Unlike thicker aluminum foils that inflate costs or inferior alloys that compromise quality, 7 mikron 8079 foil delivers a “just-right” combination of properties—all while enabling sustainable packaging design.

7 mikron 8079 Fleksibel emballasje aluminiumsfolie

jeg. Core Definition: What Is 7 Micron 8079 Fleksibel emballasje aluminiumsfolie?

7 mikron 8079 aluminiumsfolie refers to an ultra-thin aluminum alloy foil with a thickness of exactly 7 micrometers (0.007 mm, roughly 1/10 the diameter of a human hair) and composed of the 8079 aluminiumslegering.

Classified under the 8xxx series (Al-Fe-Si alloys), it is specifically optimized for flexible packaging scenarios where:

• Lightweight materials reduce transportation and packaging costs;
• Superior barrier properties extend product shelf life;
• Thinness enables compatibility with high-speed lamination and printing lines.

Its popularity stems from solving a critical industry dilemma: thinner foils often suffer from pinholes and poor strength, while thicker ones increase material consumption. 7 mikron 8079 foil resolves this with alloy-specific enhancements and precision manufacturing.

II. Material Breakdown: 8079 Alloy’s Secret to Superior Performance

De 8079 aluminiumsfolie is the backbone of this foil’s excellence. Its chemical composition and inherent properties are tailored for flexible packaging, making it distinct from common alternatives like 1235 eller 8011 alloys.

2.1 Chemical Composition of 8079 Legering

The alloy’s elemental balance directly influences its barrier, styrke, and processability. Below is its standard composition per GB/T 9774 and ASTM standards:

Data source: GB/T 9774-2023《Aluminum Foil for Packaging》

7 mikron 8079 aluminiumsfolie

2.2 Key Properties of 7 Micron 8079 Fleksibel emballasje aluminiumsfolie

Every property of this foil is engineered for packaging efficiency. Here are the critical performance metrics, verified by industry testing:

• Barrier Performance: Blocks 100% of light (UV and visible), 99.9% of oxygen, og 99.8% of water vapor—outperforming 1235 alloy by 15% in moisture resistance .
• Mechanical Strength: Tensile strength of 65–100 N/mm² and elongation at break of ≥15% , preventing tearing during high-speed packaging (up to 450 m/min).
• Pinhole Control: ≤150 pinholes per m² (max孔径≤0.1mm) —far below the 450-pinhole threshold for 6μm foils, ensuring no barrier leakage.
• Surface Quality: Brightness of 70%–75% and surface tension ≥72 dynes/cm , enabling sharp printing and strong adhesion with plastics like BOPP or PET.
• Temperature Stability: Withstands -73℃ to 371℃ without deformation , suitable for both frozen storage and retort sterilization (up to 121℃).

2.3 Synergy of 7 Micron Thickness and 8079 Legering

The 7μm thickness is not arbitrary—it’s the optimal balance for flexible packaging:

• Kostnadseffektivitet: 30% lighter than 10μm 8079 foil, cutting material costs by 22% while maintaining barrier performance .
• Process Compatibility: Thin enough to fold into stand-up pouches or blister packs but thick enough to avoid wrinkles during lamination (a common issue with 6μm foils).
• Bærekraft: Reduces aluminum consumption by 1.2kg per ton of packaging compared to 9μm alternatives, lowering carbon footprint by ~8% .

III. Precision Manufacturing: How 7 Micron 8079 Foil Is Made

Producing ultra-thin 8079 foil requires mastery of metallurgy and process control.

Leading suppliers like Huawei aluminium (a key player in China’s aluminum foil industry) employ a 10-step process to ensure consistency:

1. Ingot Smelting: Purify aluminum raw materials to remove impurities (≤0.01% residue), critical for reducing pinholes .
2. Homogenization Heat Treatment: Heat ingots to 550℃ for 8 hours to evenly distribute Fe and Si particles, preventing alloy segregation.
3. Hot Rolling: Reduce ingot thickness from 600mm to 6–8mm using 4-high rolling mills, with temperature controlled at 380±10℃.
4. Intermediate Annealing: Soften the material at 320℃ to restore ductility after hot rolling.
5. Kaldrulling: Use 6-high precision mills (imported from Germany) to thin the sheet to 0.015mm, with tension set to 120–150 N/mm² to avoid breakage.
6. Foil Rolling: Further reduce thickness to 7μm via “double rolling” (two layers rolled together), improving surface smoothness.
7. Surface Cleaning: Remove rolling oil with alkaline solution (pH 8–9) and dry at 120℃, ensuring surface tension meets lamination requirements.
8. Final Annealing: Anneal at 280℃ for 4 hours to achieve “O” temper (full softness), critical for flexibility.
9. Online Inspection: Use laser scanners to detect pinholes and thickness deviations (tolerance ±6% ), rejecting defective sections in real time.
10. Slitting & Winding: Cut into widths of 200–1700mm and wind onto 76mm/152mm cores, with max reel diameter 850mm for easy handling.

Huawei aluminium’s Edge: The company enhances this process with molten aluminum filtration (3-stage ceramic filters) and real-time thickness monitoring, achieving a 92% finished product rate—8% higher than the industry average.

Its 7 mikron 8079 foil also undergoes 100% post-production barrier testing, ensuring OTR <0.1 cm³/(m²·24h·atm) for pharmaceutical-grade applications.

IV. of 7 Micron 8079 Fleksibel emballasje aluminiumsfolie

The precise engineering of 7 mikron 8079 Fleksibel emballasje aluminiumsfolie results in a suite of defining properties that provide critical solutions for high-performance packaging, especially when integrated into multi-layer laminates.

EN. Absolute Barrier Properties: The Uncompromising Shield

Even at this ultra-thin gauge, 7 mikron 8079 Fleksibel emballasje aluminiumsfolie offers formidable barrier properties:

• Oxygen Transmission Rate (OTR): Effectively zero (< 0.005 cm³/(m²·day·atm)). Crucial for protecting sensitive products from oxidation.
• Water Vapor Transmission Rate (WVTR): Effectively zero (< 0.005 g/(m²·day)). Essential for moisture-sensitive products.
• Light Barrier: Complete opacity, blocking all visible, UV, and infrared light, safeguarding photosensitive contents.
• Aroma Barrier: Prevents loss of volatile flavor components and contamination from external odors.
• Ultra-Low Pinhole Count: De 8079 alloy and advanced rolling processes are optimized for extremely low pinhole counts, ensuring the barrier remains intact. This is critical at 7µm, as the material is more susceptible to pinholes than thicker foils.

B. Excellent Formability and “Dead-Fold” Characteristic: Precision Wrapping

• Ductility: The ‘O’ temper of the 8079 aluminum foil is incredibly malleable and ductile. It can be easily shaped, crimped, and sealed as part of a laminate without tearing.
• Dead-Fold: The foil retains its folded shape, enabling tight, secure wraps that hold their form.

C. Mechanical Robustness (within a laminate): Strength in Synergy

• Beskyttelse: While a standalone 7µm foil is delicate, when laminated with other materials (f.eks., PET, OPP, PE), the resulting composite gains significant mechanical strength, puncture resistance, and tear resistance from the polymer layers. De 8079 alloy’s inherent strength contributes to this overall robustness, making the final laminate durable enough for high-speed packaging lines and consumer handling.

8079 aluminum foil packaged by huawei

D. Non-Toxicity and Food Safety: Consumer Trust

• Purity & Inertness: 8079 aluminum foil is non-toxic, tasteless, and odorless. It is chemically inert and, along with food-grade adhesives and polymer layers, is safe for direct contact with food and pharmaceuticals, meeting stringent global regulatory approvals.

E. Superior Printability (as a laminate): Brand Appeal

• Impact: When laminated with a print-receptive outer layer (like PET), the composite provides a smooth, glossy, and stable surface for high-resolution graphics, branding, and regulatory information, enhancing brand appeal on store shelves.

V. Diverse Applications: Hvor 7 Micron 8079 Aluminum Foil Excels

The unique blend of properties makes 7 mikron 8079 Fleksibel emballasje aluminiumsfolie an indispensable component in a range of cutting-edge applications, particularly where lightweighting, high barrier, and flexibility are paramount. It is almost always used as a core layer in a multi-layer laminate.

5.1 High-Performance Food Packaging: Preserving Freshness and Flavor

• Usage: For packaging highly sensitive food products such as instant coffee, powdered milk, dry soups, spices, and high-value snacks. It is a critical layer in laminates for stand-up pouches, sachets, and flow wraps.
• Impact: Its absolute barrier properties are crucial for extending shelf life, preventing moisture caking in powders, protecting fats from rancidity, and preserving the delicate aroma of products like coffee.

5.2 Confectionery Packaging: The Ultimate Wrapper

• Usage: As a layer in wrappers for premium chocolate bars, candies, and chewing gum.
• Impact: Protects against moisture (preventing bloom on chocolate), light, and oxygen, while its dead-fold characteristic allows for a tight, secure wrap. De 7 micron gauge contributes to a softer, more pliable feel for the wrapper.

5.3 Pharmaceutical Packaging: Drug Stability and Safety

• Usage: For packaging less sensitive but still demanding pharmaceutical products in sachets and pouches (f.eks., powders, granules, certain tablets).
• Impact: Provides a reliable barrier against moisture, oksygen, and light, ensuring drug stability and efficacy. The lightweight nature is also beneficial for unit-dose packaging.

7 mikron 8079 aluminum foil for pharmaceutical packaging

5.4 Dairy Packaging: Lids and Wraps

• Usage: As the core barrier layer in lids for yogurt, cream cheese, and butter wraps.
• Impact: Prevents spoilage, protects flavor, and extends the shelf life of sensitive dairy products.

5.5 Industrial and Technical Packaging: Protecting Sensitive Components

• Usage: In specialized barrier bags for moisture-sensitive industrial powders, chemicals, or even electronic components where a high barrier is needed at minimal weight.
• Impact: Prevents costly damage to high-value industrial goods by protecting them from environmental degradation.

VI. Competitive Comparison: 7 Micron 8079 vs. Alternatives

To highlight its uniqueness, below is a head-to-head comparison with 7μm foils of 1235 og 8011 alloys (the most common alternatives):

Data source: SMM Aluminum Industry Report 2025 & Huawei Aluminum Technical Datasheet

Key Insight: 7μm 8079 foil outperforms 1235 in barrier strength and 8011 in flexibility, making it the only 7μm option suitable for both pharmaceutical and battery applications. While slightly more expensive than 1235, it reduces total packaging costs by 10% via lower spoilage rates .

VII. Vanlige spørsmål: Expert Answers About 7 Micron 8079 Folie

1. Why choose 7μm thickness over 6μm or 8μm?

7μm strikes the ideal balance: 6μm foil has excessive pinholes (>450/m² ) that compromise barriers, while 8μm increases material costs by 14% without meaningful performance gains. For most flexible packaging, 7μm is the “sweet spot.”

2. Kan 7 mikron 8079 foil be recycled?

Ja. Aluminium er 100% resirkulerbar, and 7μm foil retains 95% of its original metal value. Recycling it uses 95% less energy than producing primary aluminum.

Huawei Aluminum even offers a take-back program for post-consumer foil, med 80% of collected material reused in new foil production.

3. Is this foil suitable for microwave heating?

Ingen. Aluminum reflects microwaves, causing sparks and uneven heating. It is designed for packaging only—always remove the foil before microwaving contents.

4. What certifications does Huawei’s 7 mikron 8079 foil hold?

Huawei’s product meets global standards: GB/T 9774 (Kina), ASTM B479 (US), EU 10/2011 (food contact), and ISO 15378 (farmasøytisk emballasje).

It also has FDA and Kosher certifications for international markets.

5. How does temperature affect its performance?

The foil maintains stability from -73℃ (frozen storage) to 371℃ (retort sterilization). At temperatures above 400℃, it begins to oxidize, but this exceeds all common packaging use cases.

VIII. Challenges & Future Trends

Current Industry Challenges

• Raw Material Volatility: Aluminum prices fluctuated by ±1.9% in 2025 , forcing suppliers like Huawei to lock in long-term ore contracts to stabilize costs.
• Pinhole Control: Producing 7μm foil with <100 pinholes/m² remains a technical hurdle—only 30% of manufacturers (including Huawei) achieve this level.
• Recycling Complexity: When laminated with plastics, separating 7μm foil requires specialized electrostatic equipment, with recovery rates currently at 80% (vs. 95% for pure aluminum).

Emerging Trends

1. Ultra-Thin Evolution: R&D is targeting 6μm 8079 foil with <200 pinholes/m² for battery packaging, aiming to reduce battery weight by 5% .
2. Functional Coatings: Huawei is testing ceramic coatings on 7μm foil to boost puncture resistance by 30%, targeting sharp food products like nuts.
3. Low-Carbon Production: Using renewable energy (solar, wind) for smelting can cut the foil’s carbon footprint by 40%—a goal Huawei plans to achieve by 2027.

IX. Konklusjon

7 mikron 8079 flexible packaging aluminum foil is more than just a thin metal sheet—it’s a precision-engineered solution that redefines what flexible packaging can achieve.

By combining the 8079 alloy’s balanced strength and barrier properties with the 7μm thickness’s cost and weight advantages, it addresses the most pressing needs of modern packaging: bevaring, efficiency, og bærekraft.

Suppliers like Huawei aluminium have elevated this material further, using advanced manufacturing and quality control to turn a commodity into a high-performance product.

As industries demand lighter, greener, and more reliable packaging, 7 mikron 8079 foil will remain at the forefront—proving that sometimes, the thinnest materials deliver the biggest impact.