These bags are made of high barrier multilayer materials, and are generally used for all perishable foods or for those which require a longer shelf - life, by packing them in a vacuum or modified atmosphere.
They are also recommended for the packaging of products containing volatile oils or for the preservation of strong aromas (eg. the packaging of spices, pet food, coffee, etc.).
They can be customized by flexographic printing and manufactured in various ways or with various options, depending on the particular needs of each customer.