MIL-DTL-29597C(NAVY)
3.3.3 Type II, class 2. Type II, class 2 bags shall have three heat sealed sides formed from
two sheets of barrier material. Bags shall be supplied on rolls (see 3.3.4). Perforations shall be
created to enable bags to be removed from the roll by hand. The perforations shall occur below
the heat-seal that serves as the bottom of the bag, and shall be less than 0.25 inch (0.64
centimeter) below the effective heat-seal. Perforations shall not interfere with the integrity of the
seal (see 4.3.2).
3.3.4 Rolls. The average roll length for sizes A, B, and C bags shall be 75 + 0.5 yards
(69 + 0.5 meters). The roll for size D bags shall have 50 bags per roll. The width of roll material
shall be 36 + 0.25 inches (91 + 0.64 centimeters) for size A bags, 24 + 0.25 inches (61 + 0.64
centimeters) for size B bags, 31 ± 0.25 inches (79 + 0.64 centimeters) for size C bags, and 16.75
± 0.25 inches (33 + 0.64 centimeters) for size D bags. The length of the core shall be equal to
the width of roll material with a tolerance of + 0.25 inch (0.64 centimeter). The core shall be
rigid to prevent distortion of the roll during use and shipment. Each roll shall be restrained to
prevent unwinding (see 4.3.2).
3.3.5 Identification sheet. Each roll of bags shall contain an identification sheet with the
specification number, manufacturer's name, manufacturer's designation, lot number,
date of manufacture (month and year), national stock number, type, class, and size. Class 2 bags
shall also contain heat sealing information; type of equipment, temperature, pressure, and dwell
time (see 4.3.2).
3.4 Workmanship. The barrier material shall be free from any foreign matter. The barrier
material edges shall be cut and trimmed of any selvage. The barrier material shall be free from
holes, tears, cuts, wrinkles, or other imperfections (see 4.3.2).
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First article inspection. First article inspection shall consist of all the tests and
examinations specified in this specification.
4.3 Conformance inspection. Conformance inspections shall consist of the tests listed in
table IV and the examinations listed in 4.3.2.
4.3.1 Sampling for conformance inspection. For the purpose of determining the sample size
in accordance with ASQ-Z1.4, the lot size shall be expressed in number of bags produced in one
production run and shall use an inspection level of S-1 for testing and S-3 for visual examination.
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