MIL-PRF-22191D Flexible Barrier Material
01. Nov, 2009 
1 Comment
The barrier materials covered by this specification are intended for use in specialized military methods of preservation. The combination of all performance characteristics of MIL-PRF-131; seam strength and fabrication; water vapor transmission rate; breaking strength; puncture, blocking and curl resistance; contact corrosivity; delamination; and water resistance of markings provide the necessary requirements for protection from exposure to the extremes of the navy/naval aviation environment. Navy/naval aviation items are exposed to high moisture, high salt concentration, transfer at sea, rough handling, and minimal storage conditions. There are no commercial equivalents that meet the physical, mechanical and corrosion requirements necessary to protect material that is exposed to the operational naval aviation environment. Specifically, Methods 41, 42, 43, 51, 52, and 53 of MIL-STD-2073-1C use MIL-PRF-131 as the premier source of barrier materials that provide watervaporproof (and watervaporproof with desiccant) protection for applicable items encountering the above conditions. MIL-PRF-131 provides the building blocks for applying specialized military preservation techniques approved under MIL-STD-2073-1C.
Types:
Type I materials is intended to be used in all packaging applications where watervaporproof, greaseproof barrier materials are required.
Type II material is intended to be used in all packaging applications where waterproof, greaseproof barrier materials are required.
Type III material is intended to be used in all packaging applications where waterproof barrier materials are required.
Standard Test Method for Seal Strength of Flexible Barrier Materials. The purpose of the testing was to determine if there was a difference in seal strength as a result of different combinations of packaging materials and adhesives.