MIL-PRF-22191F
4.3.2.3 Examination of the end item for dimensional defects. The sample unit for this
examination shall be one roll or one package of sheets, as applicable.
TABLE V. Examination of the end item for dimensional defects.
EXAMINATION
DEFECT
Sheets
Length or width varies by more than minus
1/8 inch or plus 1/4 inch from the dimensions specified.
Rolls:
Width
Varies by more than minus 1/8 inch or plus 1/4 inch from width
specified.
Length
Average length of roll material is less than 200 yards.
The length of any individual roll is less than 195 yards.
Core
Length less than width of roll material, or greater by more than
plus 1/8 inch.
Inside diameter less than 3 inches or greater than 3-1/8 inches
Identification markings
Lettering is less than 1/8 inch in height.
Do not appear once in each 2-1/2 inches of width of roll.
The complete group does not appear every 2 inches lengthwise
4.4 Test conditions. Unless otherwise specified in the detail test methods herein, the
physical tests contained in this specification shall be made with an atmosphere having a relative
humidity of 50 ± 5 percent and a temperature ranging from 70 to 76 °F. Material shall be
considered in equilibrium after exposure to the above conditions for a minimum of 24 hours.
4.5 Sealing instructions for qualification and conformance testing.
a. All seals for test purposes shall be not less than 1/2-inch wide and shall be effected on a
jaw-type heat-sealer (or equivalent as approved by the qualifying activity) utilizing the sealing
conditions recommended by the manufacturer. These conditions shall be limited as follows:
(1) Maximum temperature = 500 °F
(2) Maximum dwell time = 3 seconds
(3) Maximum pressure = 60 lbs/sq. in
b. Impulse seals for test purposes shall be a minimum of 1/16-inch wide and shall be
effected on impulse sealers, or equivalent as approved by the qualifying activity. The upper
sealing limits on the sealer shall effect a seal and not cause thinning at the inside edges of the
seal.
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