These linings improve not only safety but also durability in beverages and foods, because they prevent metal from coming into contact. Usually made from epoxy or BPA-based resins, such a liner acts to avoid corrosion that may cause the metal to leach into the product. While BPA did raise certain concerns, the relevant regulatory agencies like the U.S. The FDA and EFSA have made an assessment of the amount of BPA levels present in the food containers and came to a conclusion that the amount, as present in the food container, is safe and below the levels that will harm the consumers. Normally, BPA level in the lining of aluminum cans is usually below 5 parts per billion, the level safe according to the agencies.
As a result of these concerns by consumers, many manufacturers have switched to BPA-free linings using alternatives like acrylic or polyester resins. These alternatives maintain the same standards of safety as more traditional linings while meeting the demands of health-conscious consumers. In North America, about 90% of new aluminum cans feature BPA-free linings, especially for beverages and foods susceptible to high consumption. That shift has been successful here, without adversely affecting the protective qualities of the lining in support of product integrity for months and years.
The lining inside the aluminum can is usually 2 to 5 microns thick, fine, and hence does not contribute much to the weight and volume. It is thin enough to make it economical yet serving its purpose of protection and minimizing any possibility of an interaction between aluminum and the acidic contents, like sodas, that may spoil either the taste or color.
Packaging expert Dr. Linda Harris says, “The development of BPA-free linings has increased consumer confidence in canned goods without sacrificing product safety or shelf life.” In sourcing safe, reliable aluminum can lining for your brand or manufacturing company, options should be selected that not only are compliant but also high-quality to meet regulations concerned with safety and customer expectations.