Type 501

It is a three-layer laminated barrier material consisting in an outer layer of polyester film, a middle layer of aluminium foil and an inner layer of high-density polyethylene film. 
This is the standard MIL material used for packages designed to protect a whole variety of items from water vapour during transport, where climate changes are expected to induce the formation of condensate.
The Propacktene 501 barrier can guarantee the total absence of moisture inside a correctly sealed covering.
Propacktene 501 is also suitable for long-term storage of materials requiring a stable atmosphere in order to retain their original characteristics.
Thanks to its excellent sealability, you can easily produce bags of any size for overseas shipments.