Overview
Water-based aluminum foil adhesive is a solvent-free bonding agent designed for laminating aluminum foil to paper, plastic, or other substrates. It is widely adopted in packaging industries due to its environmental benefits and compliance with food safety regulations. Unlike solvent-based adhesives, this water-based variant emits minimal volatile organic compounds (VOCs), making it safer for workers and end-users. Its formulation ensures strong adhesion while maintaining flexibility and heat resistance, critical for packaging applications.
Physical and Chemical Properties
The adhesive typically appears as a milky white liquid with a density of 1.05-1.15 g/cm³. It is water-soluble and exhibits excellent wetting properties, ensuring uniform coating on foil surfaces. Key chemical properties include pH stability (usually 7-9) and resistance to hydrolysis. Its bonding strength ranges from 3-8 N/15mm, depending on substrate and curing conditions. The adhesive cures at room temperature or with mild heat (60-80°C), reducing energy consumption during production.
Main Applications
Primary use is in flexible packaging, such as food pouches, pharmaceutical blister packs, and snack wrappers. It bonds aluminum foil to PET, CPP, or paper, creating barriers against moisture, oxygen, and light. The adhesive is also employed in industrial laminates for insulation materials and decorative foils. Its FDA-compliance makes it suitable for direct-food-contact packaging, including dairy and ready-to-eat meal containers.
Safety and Storage
As a water-based product, it poses lower toxicity risks compared to solvent-based alternatives. However, prolonged skin contact should be avoided, and protective gloves are recommended during handling. Storage requires protection from extreme temperatures (freezing or >40°C) to prevent emulsion breakdown. Unopened containers have a shelf life of 6-12 months. Always stir before use to ensure homogeneity.
B2B Procurement Guide
When sourcing, prioritize suppliers with ISO 9001 certification and FDA/GB 9685 compliance documentation. Request samples to test bonding performance with your specific substrates. Bulk procurement (drums or IBC totes) reduces costs by 15-30%. Negotiate MOQs based on production volume, and confirm lead times, especially for customized formulations with adjusted viscosity or curing speed.
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