MIL-DTL-44419A
3.3.3.3 Finished Lining. The finished lining (backing fabric / insulation batt/ facing fabric
laminate) shall be constructed by bonding the backing fabric to one side of the insulation batt and
bonding the unnapped side of the facing fabric to the other side of the insulation batt. The finished
lining shall meet the requirements in Table IV when tested as specified in 4.4.4.
Table IV. Finished lining requirements
Characteristic
Minimum
Maximum
Thickness (in.) @ 0.002 psi
0.25
0.33
Drape stiffness, inches:
Machine
2.5
Cross Machine
2.5
Water vapor transmission grams/square
650
meter/24 hours
3.3.4 Waterproof insert. The waterproof insert shall be constructed from a waterproof,
moisture vapor permeable, two or three-layer laminate (see 3.3.4.1 and 3.3.4.2). The insert shall
be properly sized to fit around the glove insulation. The insert shall be designed so that it can be
securely affixed inside the glove, such that it cannot be pulled out when the hand is removed. The
finished insert shall be manufactured in such a way that it meets the requirements in Table V when
tested as specified in 4.4.4. Take special note that the insert has no distinction between face and
back and may be accidentally inverted in use; refer to end item for proper side to test. (See 6.6).
3.3.4.1 Two-layer laminate. The two-layer laminate shall consist of a non-woven textile layer
and a membrane layer.
3.3.4.2 Three-layer laminate. The three-layer laminate shall consist of a non-woven textile
layer, a membrane layer, and a non-woven textile layer.
Table V. Waterproof insert requirements
Characteristic
Requirement
3.3 oz/yd.2 max.
Weight
Thickness
0.022 inches max.
Moisture Vapor Transmission Rate
600 g/m2/day min.
Method B (hand-side to water)
5000 g/m2/day min.
Method BW (hand-side to water)
Trapezoidal Tear Strength
8 lbs min.
Warp
5 lbs min.
Fill
Cut Strip Break Strength
10 lbs min.
Warp
10 lbs min.
Fill
Seam Strength
6 lbs min.
5,000 cycles (0oF), no leakage
Water Permeability after Cold Gelbo Flex
Water Permeability after Wet Flex
24 hours, no leakage
8
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