Cold Formed Alu Alu Aluminum Foil for Sensitive Pharmaceuticals with Moisture Protection

11/06 2025 Tony

In the pharmaceutical industry, protecting sensitive drugs from environmental factors such as moisture, oxygen, and light is critical to maintaining their efficacy and shelf life. Cold Formed Alu Alu Aluminum Foil is a specially engineered packaging material designed to meet these exacting standards, providing robust moisture and barrier protection.

Cold Formed Alu Alu Foil is a type of aluminized packaging solution comprising two layers of high-purity aluminum foil, laminated together with a polymeric film and additional barrier layers when needed. This construction creates an advanced, hermetic seal, ideal for blister packs of moisture-sensitive pharmaceuticals — where minimal permeability to gases and moisture determines product stability.

Features

Feature	Description
Dual Aluminum Layers	Two uniform layers of stable alloy aluminum ensuring excellent mechanical strength and barrier properties
Cold Formed Ductility	Ability to be cold formed into complex shapes without cracking, crucial for complex blister pack manufacturing
Superior Moisture Barrier	Immediate and long-lasting protection by a near-impermeable aluminum vapor barrier
Excellent Oxygen Barrier	Protects active pharmaceutical ingredients (API) by preventing oxygen ingress
Light and UV Protection	Blocks harmful radiation contributing to product degradation
Chemical Resistance	Compatibility with reactive and moisture-sensitive pharmaceutical drugs
Temperature Resistance	Allows tolerance to high-speed sterilization and processing temperatures
No Migration of Materials	Formulated without plasticizers or harmful migration contaminants suitable for pharmaceutical packaging

Chemical Composition of Aluminum Foil Layers

Element	Typical Content (%)	Function/Role
Aluminum (Al)	99.30 - 99.50	Main layer offering barrier and strength
Silicon (Si)	0.15 - 0.30	Improves castability and foil rolling
Iron (Fe)	0.20 - 0.40	Powers mechanical strength and hardness
Copper (Cu)	< 0.005	Controls corrosion resistance
Manganese (Mn)	0.05 - 0.30	Adds strength, oxygen barrier enhancement
Magnesium (Mg)	0.05 - 0.10	Enhances strength and corrosion resistance
Others	Trace Elements	Minor adjustments to mechanical/chemical properties

All alloys meet pharmaceutical standards to ensure no contamination during drug storage and transportation.

Technical Specifications

Property	Unit	Value Range	Description
Total Aluminum Thickness	μm (microns)	40 - 80	Thickness of top and bottom layers combined
Polymer Closure Layer Thickness	μm (microns)	18 - 35	Layer laminated with aluminum for seal performance
Tensile Strength	N/mm²	90 - 135	Resistance to elongation or rupture during forming
Elongation at Break	%	1.5 - 6	Ductility enabling cold formability
Moisture Vapor Transmission Rate (MVTR)	g/m²/day	< 0.01	Indicates outstanding moisture protection capabilities
Oxygen Transmission Rate (OTR)	cm³/m²/day	< 0.005	Ensures oxygen exclusion to prevent drug oxidation
Inter-laminar Adhesion	N/cm	> 12	Resistance to delamination for package reliability
Operating Temperature	°C	-40 to +140	Stability through freezing to sterilization processes

Performance Benefits

Enhanced Stability: Minimizes product deterioration, preserving potency and efficacy.
Perfect for Complex Pack Structuring: High ductility supports multifunctional pack designs.
FDA and EU Compliant: Full certification for pharmaceutical contact safety standards.
Recycle Compatibility: Aluminum component suitable for existing aluminum scrap recycling streams.

Typical Applications

Application Type	Example Dosage Forms	Packaging Formats
Moisture Sensitive Tablets	Variable-dose antihistamines, vitamins	Blister packs (cold formed push-through foil)
Effervescent Granules	Soluble aspirin granules	Multi-layer pouch laminates
Sensitive Hormonal Drugs	Oral contraceptives, thyroid medication	Child-resistant blister folds
Skin & Ophthalmic Medicines	Ointments and scheduled eye drops	Spot-sealed pouches and breite freeze-dried pod packs
Vaccines & Bioactive Solutions	Lyophilized powders	Cold-form-molded sealant sealing with Alu Alu overhead