Foil pouches are generally used as a part of a multi-layered packaging system. They are used in making the innermost layer of the bag. Since they are on the inner side, they come in direct contact with the product, which is why they must be very hygienic. Foil pouches are usually made of aluminum and can safeguard the product from intense heat and cold. They also make sure that a low moisture vapor transmission rate is maintained.

Foil pouches are usually made in three or four layers. The quality of the pouch keeps improving with the increase in layers. This is because the greater the number of layers, the better will be the strength of the pouch. Foil pouches, however, should not be confused with metalized bags.

These pouches are widely used in cereal packaging. They are designed to keep the cereal fresh. If these pouches are not used, the cereal may get infested by pests. Also, they offer a better alternative to easily store the food. They occupy less space and are easy to carry.

Coffee packaging is another area where foil bags are used. They help the coffee powder maintain its aroma for long.

Their applications are not only limited to food. Many medicines and surgical instruments are packed in foil pouches too. This shows how safe and hygienic they are.