MIL-DTL-2439F
3.12 Peel strength of outer layer. For Type I, II, and IV containers, the outer and cover tube shall
exhibit 75 percent minimum fiber failure. For Type V containers, the outer and cover tube shall
exhibit nearly total fiber failure, up to 1/8 inch in diameter is allowable.
3.13 Resin content. Type IV containers, unless otherwise indicated, shall be 12 percent by
weight minimum resin content of the outer, cover and neck tubes (See 6.8).
3.14 Wax. If wax is used as a lubricant, transfer of the wax to the inner ply of the container shall
be permitted but there shall be no evidence on inner plies of loose wax particles, flaking or
caking of the wax.
3.15 Gloss. Gloss measurement of the fiber container exterior, to include the coated end, should
be less than 35 mean specular gloss at 60 degree geometry.
3.16 Blisters. Type I, Type II and Type III parts shall be free from blisters (See 6.6) when
subject to temperature conditioning.
3.17 Assembly. All tubes in either the body or cover assemblies shall be securely glued together
with a glue complying with ASTM-D-4317 or a tackified polyvinyl alcohol or acetate adhesive.
Glue shall be applied in at least one continuous band completely around the tube being glued.
Tubes, supports and other related parts, when not specifically dimensioned, shall form a snug fit
with mating pieces. Tubes, supports, and parts, other than spacers fastened into fiber containers,
shall not be displaced when subject to drop testing.
3.17.1 Tubes (except outer and cover tubes). Any inner or neck tube resting against a metal end,
a support for another tube, or some other part, shall make contact at least at one point on the
periphery of the tube. When inner support or neck tubes are required they shall contact the metal
end on at least one point of the periphery of the tube. Each end shall be square, when measured
perpendicularly to the central axis, within one half the length tolerance for the tube.
3.17.2 Assembly workmanship. All parts and assemblies shall be clean and free from scuffs
penetrating the outer layer, gouges, cuts, checks, imperfect adhesion between layers, bleeding of
asphalt (applicable to Type I, II and III containers), checking of paper on inside and outside
surfaces, ragged slitter and re-cutter cuts, burrs on the inside edge of the open end of the cover,
ragged edges on the open end of other tubes, excess glue or adhesive on mating surfaces, dirt,
grease, rust, mold, mildew, and other foreign matter, except that traces of process lubricant will
be permitted provided that noticeable staining or discoloration does not occur. Scuffs not
penetrating the outer layers shall be permitted on a container if they are not larger than one inch
and there are not more than two scuffs on the container.
3.18 Ammunition lot numbering. Ammunition lot numbers shall be assigned in accordance with
MIL-STD-1168.
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