What are the key properties of Aluminum Foil Alloy 1235 (Food Grade)?
Alloy 1235 is widely used for food-grade aluminum foil due to its high purity (99.35% aluminum content), excellent barrier properties against moisture and odors, and superior flexibility for packaging applications. It typically has a thickness range of 0.006mm–0.2mm and is available in rolls with width tolerances of ±0.5mm to ±1mm.
How is Alloy 1235 produced for food packaging?
The production involves hot and cold rolling processes to achieve the desired thickness, followed by annealing to enhance ductility. The alloy's iron and silicon content is carefully controlled to ensure food safety, and it often undergoes FDA or ISO certifications for food contact compliance.
What are the main applications of Food Grade Alloy 1235 foil?
It is commonly used for household foil, food wraps, pharmaceutical packaging, and flexible laminates. Its non-toxic nature and heat resistance make it suitable for oven use and sous vide cooking.
What certifications does Alloy 1235 foil typically hold?
High-quality 1235 foil often meets FDA, ISO9001, and CE standards, ensuring it is safe for direct food contact and meets international packaging regulations.
How does Alloy 1235 compare to other food-grade alloys like 8011 or 8079?
While 1235 offers higher purity and better flexibility, alloys like 8011 provide stronger mechanical properties, and 8079 is preferred for thicker applications. The choice depends on the specific requirements of the packaging use case.
