1. What is the composition and key characteristics of 1235 O Aluminium Foil?
1235 O aluminium foil is composed of over 99.35% pure aluminium, with trace amounts of iron and silicon. It is known for its high ductility, excellent formability, and soft temper (O), making it ideal for applications requiring flexibility and folding without cracking.
2. What are the common applications of 1235 O Aluminium Foil?
This foil is widely used in food packaging (e.g., chocolate wraps, yoghurt lids), household foil, and as a composite base material. Its softness ensures easy handling for wrapping and sealing, while its purity meets food-grade safety standards.
3. How does 1235 O Aluminium Foil compare to harder temper (H) variants?
Unlike H18 (hard temper) foil, which offers rigidity for applications like capacitor casings, 1235 O foil excels in flexibility. It can withstand repeated folding without tearing, making it suitable for delicate items like confectionery.
4. What quality controls are essential during its production?
Production requires strict adherence to thickness tolerance (±5%), pinhole-free surfaces, and controlled environments (25°C ±2°C, humidity <60%). Spectrometers ensure alloy composition meets FDA/RoHS standards for food/electronic uses.
5. How is 1235 O Aluminium Foil stored to prevent degradation?
It must be stored in sealed, oxygen-free conditions to avoid oxidation (white spots). Unused rolls should be kept dry and away from contaminants to maintain surface integrity.
