MIL-PRF-3420H
3.5 Identification of material. The notation DO NOT USE WITH FOODSTUFFS,
specification number, class, style, manufacturer's name, manufacturer's designation, month and
year of manufacture, and the notation OTHER SIDE TREATED (used when only one side has
been treated) shall be clearly and legibly marked using water-resistant ink on the untreated side
only. If both sides are treated, printing on either side is permissible. For material on rolls, the
lines of print shall be perpendicular to the longer sides of the material as shown on figure 1.
When marking is not possible due to surface conditions, tags that show the marking information
as described above, except for the notation OTHER SIDE TREATED shall be used. In the case
of flat units, a sheet shall be inserted in the package. Tags or sheets shall be visible upon
opening the roll or package (see 4.3.2.1). The markings shall be not less that 1/8 of an inch high.
The group of markings shall be repeated laterally on 10-inch centers. The distance between the
bottom line of one group of markings and the top line of the next group of markings shall be not
greater than 2 inches (see 4.3.2.3).
TYPICAL
GROUP OF
MARKINGS
2"
MAX
10"
10"
FIGURE 1. Marking of rolled wrapping materials.
3.6 Performance requirements. The performance of the treated carrier shall conform to the
requirements specified in table I, when tested as specified in 4.5.
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