MIL-DTL-31011B
3.6 Physical surface appearance after laundering. The cloth shall show no change in physical
surface appearance after 5 laundering and drying cycles (Types I and II) or 20 laundering and
drying cycles (Types III, IV and V).
3.7 Dimensional stability (Types III, IV and V only). The shrinkage or elongation of the cloth
shall not be greater than 4.0 percent in the warp direction and not greater than 2.0 percent in the
filling direction for Types III and IV, and not be greater than 4.0 percent in each of the warp and
filling directions for Type V.
3.8 Colorfastness. The face side of the cloth shall meet the following colorfastness
requirements:
Colorfastness characteristics
Requirements
Fastness to laundering
Equal to or better than "3-4" rating
on AATCC Gray Scale for Color Change
Fastness to accelerated
Equal to or better than "3-4" rating
laundering (Black print only)
on AATCC Gray Scale for Color Change
Fastness to light
Equal to or better than "3-4" rating
on AATCC Gray Scale for Color Change
Fastness to crocking
Equal to or better than the standard sample or not
less than AATCC chromatic transference scale
rating of 3.5. 1/
Fastness to abrasion
Equal to or better than the standard sample or not
less than "3-4" rating on AATCC Gray Scale for
Color Change
Fastness to high humidity
No appreciable change 2/
(except Types IV and V)
1/ Except Black 357 shall show an AATCC chromatic transference scale rating of not less than
1.0.
2/ An appreciable change in color means a change that is immediately noticeable on comparison
of the test specimen with the original, unexposed sample. If closer inspection or a change of
angle of light is required to make apparent a slight change of color, then change is not considered
appreciable.
3.9 Color
3.9.1 Class 1, Woodland Camouflage. The color of the face side of the cloth shall be Woodland
Camouflage pattern and shall match Light Green 354, Dark Green 355, Brown 356, and Black
357. Each area of the specific color of the pattern shall be in accordance with the applicable
standard sample. The color of the back side of the cloth shall be Camouflage Green 483
matching color chip 34094 of FED-STD-595B or show Woodland Camouflage strike-thru from
the face side print.. Both sides of the cloth shall match the respective side of the standard
sample.
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