The tough construction of this MIL PRF 131 aluminium foil gives it the edge over thinner commercial grades. The combination of complementary materials in this laminate result in a moisture barrier that is able to resist chemical and physical stresses.
The tear and breaking strength is the highest in our range. Still it retains the very low water vapour transmission rate of 0.3g/m2 per 24 hours. This is one of a list of impressive characteristics seen on the data sheet of this material.
The high performance nature of this extends to the inclusion of Valcross® in the laminate. This gives optimal strength whilst retaining excellent flexibility.
This barrier foil is available in several different widths supplied in a 200mtr log packaging roll. The user can cut to the desired dimensions allowing the component to be heat sealed and vacuum packed for for it’s journey.
Using Mil Spec Bags
This type of Aluminium foil can be converted into pouch packaging to suit components and precision parts.
It is ideal for use in heavy machinery transport/storage projects. It also meets the standard EU and BIR guidelines as well as MIL PRF 131 K class 1.
NF H 00 310 CLASS IV approved.
DEF STAN 81-75/2 – TYPE 1 CLASS A approved.
MIL PRF 131 K Barrier Foil Handling
Requires Heat sealing with a compound aluminium foil sealer. Set to 210°c at 5 bars for 2-3 seconds.
The suitable operating temperatures for this material are between -40°C to +70°C.
For optimal conditions we recommend you use this barrier foil in conjunction with desiccant. This will absorb excess moisture in transit.
For more information on how to calculate desiccant requirements please visit our desiccant estimate page.
Warning – Please note this material is intended to be used only by suitably trained professionals.
The Mil PRF 131 K performance specifications is specified by the US government to apply to barrier materials that are –
Water vapor proof
Heat Seal able
The material must feature the above characteristics to be suitable for use as military packaging.
Constructed of micron 12чm PET, 9чm Alu, 70gsm Blue Crossed Polyethylene Valcross®
Material code VAL59BL.
Dependent on quantities and format ordered. Log & jumbo foil rolls available from stock.
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