Introduction to 8011 Food-Grade Foil
8011 alloy aluminium foil jumbo rolls are a premium material in the food packaging industry. The alloy is an aluminum-iron-silicon grade containing about 0.5-0.9% iron, supplied in a soft annealed O temper for maximum formability. It combines superior barrier properties with excellent deep-drawing and wrapping behavior, making it the backbone of modern hygienic packaging from chocolate wraps to pharmaceutical blister packs.
Key Specifications
Thickness is customizable from 0.006 mm to 0.2 mm, and jumbo rolls can be supplied up to 1600 mm wide. The soft temper allows easy forming, folding and lamination while maintaining strength. Typical surface finish is clean, bright and uniform, suitable for direct food contact and subsequent printing or coating.
Barrier and Performance Advantages
The foil provides more than 99.9% protection against oxygen, light and moisture, which protects flavor, aroma and freshness in packaged food. It remains stable between -50°C and 250°C, covering freezing, cooking and sterilization processes. At 0.01 mm thickness the surface is essentially pinhole-free, with counts typically at or below 10 pinholes per square meter, ensuring reliable barrier performance.
Certifications and Compliance
Food-grade 8011 foil is produced under recognized food safety systems and carries certifications including ISO 22000 and HACCP, with Halal and Kosher compliance available. It also meets heavy metal restrictions under REACH and RoHS, giving packaging converters confidence in regulatory compliance across markets.
Applications
In the food sector, 8011 foil is used for dairy product lids, ready-meal container seals and coffee and tea inner bags. Specialty applications include pharmaceutical foil blisters, insulation layers for lithium batteries and decorative metallic laminates. The alloy's combination of barrier, formability and food safety makes it one of the most versatile foil grades available.
FAQ
Q1: What does soft temper (O) mean for foil?
O temper is fully annealed, making the foil soft and highly formable. It is preferred for wrapping, lidding and deep-drawn containers where the material must conform without cracking.
Q2: Is 8011 foil safe for pharmaceutical use?
Yes. 8011 foil complies with food and pharmaceutical contact standards and is widely used for blister packs where moisture and oxygen protection are critical for drug stability.
Q3: How thin can 8011 foil be produced?
Thickness can be customized down to about 0.006 mm (6 microns), although the practical minimum depends on the required barrier and mechanical performance of the final package.
Q4: Can this foil be printed and lacquered?
Yes. The clean, uniform surface accepts printing inks, lacquers and coatings used in packaging decoration and heat-seal applications.
Q5: What is the difference between 8011 and 1235 foil?
8011 is an Al-Fe-Si alloy with higher strength and better deep-drawing behavior for containers and lids. 1235 is higher purity and preferred for thin flexible packaging laminates where softness and barrier are the priorities.