MIL-DTL-29597C(NAVY)
TABLE IV. Conformance tests.
REQUIREMENT
TEST
CHARACTERISTICS
PARAGRAPH
PARAGRAPH
Thickness
Table I
4.4.1
Tensile breaking factor
Table I
4.4.3
Puncture
Table I
4.4.5
Heat seal energy to break
Table I
4.4.6
Adhesive seal integrity
Table I
4.4.8
(class 1, only)
4.3.2 Visual examination of end item for defects in form, thickness, identification, PSA
material, and workmanship. The sample unit for the end item inspection shall be one bag. The
sample unit shall be visually inspected and measured to ensure it meets the requirements
specified in 3.2.1 through 3.4.
4.4 Test methods. Unless otherwise specified, all tests shall be conducted as specified
herein. Barrier material and adhesive samples shall be conditioned for 24 hours (minimum) in a
circulating air environment having a relative humidity of 50 ± 5 percent and a temperature of
70 to 76 ºF (21 to 25 ºC).
4.4.1 Thickness. A dial or digital micrometer having an accuracy of ± 0.0005 inches shall
be used to measure the material thickness.
4.4.2 Transmission rates. The water-vapor transmission rate shall be measured in
accordance with ASTM-F1249, using 100 percent relative humidity on one side of the film and
flowing, dry detector gas (nominally, 99.7 percent nitrogen) on the opposite side. The oxygen
transmission rate shall be tested in accordance with ASTM-D3985 at 73 ± 1°F (23 ±0.5 °C), at
less than 1 percent relative humidity, using no less than 99.9 percent oxygen on one side of the
film and a flowing, oxygen-free detector gas (nominally, 98 percent nitrogen and 2% hydrogen)
on the opposite side.
4.4.3 Tensile breaking factor and elongation. The barrier material shall be tested for tensile
breaking factor and elongation in accordance with ASTM-D882.
4.4.4 Tear strength. The barrier material tear strength properties shall be tested in
accordance with ASTM-D5733, determining both peak load and energy to break. Energy to
break shall be obtained by measuring the area under the position (inches)/ load (lbs) curve.
4.4.5 Puncture resistance. Puncture resistance shall be determined in accordance with
MIL-STD-3010, test method 2065. Five specimens shall be tested with the bag interior side up.
4.4.6 Heat seal strength. The heat seal strength shall be tested in accordance with
ASTM-F88 determining both peak load and energy to break. Energy to break shall be obtained
by measuring the area under the position (inches)/ load (lbs) curve.
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