MIL-PRF-85036B(AS)
4.6.2.4 Seam strength (sealed after aging).
4.6.2.4.1 Test specimens. The six sections for this test (see figure 1), in the flat unsealed
condition as taken from the sample roll shall be aged in a circulating air oven maintained at
160 ± 2 °F for 12 consecutive days (288 hours). After removal from the oven, the unsealed
sections shall return to room temperature. Test specimens shall then be obtained as specified in
4.6.2.2.1.
4.6.2.4.2 Test at room temperature. The six 1-inch-wide specimens selected for this test
(see 4.6.2.4.1) shall be tested as specified in 4.6.2.2.2.
4.6.2.4.3 Test at 100 °F. The six 1-inch-wide specimens selected for this test (see 4.6.2.4.1)
shall be tested as specified in 4.6.2.2.3.
4.6.2.4.4 Test at 160 °F. The six 1-inch-wide specimens selected for this test (see 4.6.2.4.1)
shall be tested as specified in 4.6.2.2.4.
4.6.3 Seam strength (face to back seal).
4.6.3.1 Seam strength sampling. Samples measuring 3 by 12 inches shall be selected from
the test material as shown on figure 1 (key 4, 5, 6).
4.6.3.2 Seam strength as received.
4.6.3.2.1 Preparation of test specimens. From the twelve sections selected for this test
(see figure 1), place the face film of one section of material down on a flat surface. Place the face
film of another piece of material over the top of the first piece. Heat-seal with a 1/2 inch seal.
From each of the six sections so prepared, three adjacent one-inch wide specimens shall be cut
perpendicular to the seam (see 4.6.2.2.1). One of the specimens from each section shall be tested
at room temperature, one from each section tested at 100 °F, and the remaining one from each
section tested at 160 °F. After heat-sealing and prior to the application of the specified weights,
the specimens in all cases shall be exposed for one hour at the test conditions specified in 4.4.
4.6.3.2.2 Test at room temperature. The six 1-inch-wide specimens selected for this test
(see 4.6.3.2.1) shall be tested as specified in 4.6.2.2.2.
4.6.3.2.3 Test at 100 °F. The six 1-inch-wide specimens selected for this test (see 4.6.3.2.1)
shall be tested as specified in 4.6.2.2.3.
4.6.3.2.4 Test at 160 °F. The six 1-inch-wide specimens selected for this test (see 4.6.3.2.1)
shall be tested as specified in 4.6.2.2.4.
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