Aluminum Foil 1235-O 7-8 Microns for Flexible Packaging
Aluminum foil is a critical material in flexible packaging, renowned for its exceptional barrier properties against moisture, light, gases, and contaminants. Among numerous grades, Aluminum Foil 1235-O 7-8 microns stands out as a premium choice, particularly for the food and pharmaceutical industries. Its precise thickness range and metallurgical characteristics make it ideal for flexible packaging solutions that require durability, malleability, and excellent protection.
Functions of Aluminum Foil 1235-O 7-8 Microns
Aluminum foil of 7-8 microns in the 1235-O temper offers unique performance characteristics allowing manufacturers to meet high standards in flexible packaging solutions. The premium functionalities include:
- Superior Barrier Protection: Effectively blocks out moisture vapor, oxygen, ultraviolet (UV) rays, and aromas, helping extend the shelf life of sensitive products.
- Excellent Mechanical Strength: Despite being ultra-thin, it provides consistent mechanical durability and resistance against punctures or tearing, crucial in packaging thin films.
- Good Formability: The temper 'O' (fully annealed) conspires excellent flexibility, making it easier to wrap, fold, or laminate without cracking.
- Heat Sealability and Compatibility: Easily compatible with various laminating adhesives and printable surfaces, ensuring strong seals and extended package utility.
- Non-Toxic and Food-Safe: Compliant with food contact safety regulations, suitable for direct food packaging.
Applications in Flexible Packaging
Flexible packaging is a thriving segment driven by sustainability, consumer convenience, and enhanced protection requirements. Aluminum Foil 1235-O 7-8 microns is extensively used in:
- Food Packaging: Protecting snacks, confectionery, baked goods, dairy, ready meals, oils, fresh dairy items, frozen foods, and perishable goods from moisture, odor contamination, and spoilage.
- Pharmaceutical Packaging: Used in sachets, blister packs, and strips to maintain sterility and protect medicines from degradation by oxygen or moisture.
- Cosmetic & Personal Care: Foil outer layers on flexible tubes, sachets, or boxed packagings help ensure content integrity from environmental hazards.
- Industrial Packaging: Acts as shielding or insulation layers in technical and chemical packaging where stability is essential.
The thin gauge combined with superior properties allows for cost-efficient use without compromising material strength or protection quality, facilitating kiss-seal packaging, vacuum wraps, and complex laminate structures.
Alloy and Temper Specifications
The following table presents the alloy specification and temper condition details for Aluminum Foil 1235-O in the specified thickness range.
| Parameter | Description |
|---|---|
| Alloy Grade | 1235 |
| Temper Condition | O (Fully Annealed) |
| Thickness | 7-8 Microns |
| Standard Compliance | ASTM B209, ISO 6361, GB/T 3880 |
| Primary Applications | Flexible packaging, pharmaceutical blisters |
Chemical Composition
The alloy 1235 is a commercially pure Aluminum alloy with the following chemical characteristic standards illustrating minimal alloying elements content for maximum purity and corrosion resistance:
| Element | Typical Composition (%) | Max Limit (%) |
|---|---|---|
| Aluminum (Al) | 99.3 | - |
| Iron (Fe) | 0.35 | 0.50 |
| Silicon (Si) | 0.05 | 0.15 |
| Copper (Cu) | 0.05 | 0.05 |
| Manganese (Mn) | 0.02 | 0.03 |
| Magnesium (Mg) | <0.03 | 0.03 |
| Zinc (Zn) | <0.03 | 0.05 |
| Titanium (Ti) | 0.01 | 0.03 |
The chemical purity ensures excellent corrosion resistance and gives the foil superior surface finish properties, critical for embossing or printing processes.
Technical Specifications
Thickness precision, mechanical properties, and dimensional standards ensure perfect performance in mass production packaging lines:
| Property | Units | Range / Value |
|---|---|---|
| Thickness | Microns | 7 - 8 |
| Width | mm | Usually customized, typical 200-1500 mm |
| Tensile Strength | MPa | ≥ 60 |
| Elongation (on 2 inches) | % | ≥ 12% |
| Annealed Hardness (HV) | Vickers Hardness | 15 - 30 |
| Density | g/cm³ | 2.7 |
| Surface Finish | - | Bright |
| Specific Gravity | - | 2.70 |
Industry Standards for Implementation
Companies manufacturing Aluminum Foil 7-8 microns 1235-O Grade adhere strictly to industrial norms to ensure reliability and uniformity across flexible packaging formats. harmonized standards followed include:
- ASTM BBeam (Standard Specification for Aluminum and Aluminum-Alloy Rolling Plates, Sheet, and Foil for Flexible Packaging)
- ISO 6361 (Aluminum and Aluminum Alloys - Sheet, Strip and Plate)
- GB/T3880: Chinese Standard for Aluminium and Aluminium Alloy Foil for Packaging
- FDA Regulations CFR 21 (for Food Contact Safety)
Compliance with these enables smooth downstream usage addressing rigorous client demands, food safety laws, and industry-specific packaging requirements.
Why Choose Aluminum Foil 1235-O 7-8 Microns?
Opting for the 1235-O grade aluminum foil ensures:
- Lower environmental impact through thin gauge use while maintaining excellent barrier effect.
- Sustained product freshness and maximum shelf life extension.
- Exceptional comfort and flexibility for designs demanding creasing and intricate molding.
- Safe, hygienic, and recyclable packaging which conforms to current sustainability trends.
- Tailored, consistent coating and surface features adaptable for lamination or varnishing.
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