MIL-DTL-43415D
3.2.7.4 Bottom ply. The bottom ply shall be a pyroxylin-coated cloth.
3.2.7.4.1 Base cloth. The base cloth shall be cloth, cotton, sheeting conforming to Type VII, Class 1
of CCC-C-432, except that the cloth shall be desized and scoured and shall contain not more than 5.0
percent starch and protein material excluding chloroform-soluble and water-soluble material and the
requirements for breaking strength, seam efficiency, and shrinkage shall not apply.
3.2.7.4.2 Coating compound. The coating compound shall be 100 percent virgin cellulose nitrate that
has been pigmented and plasticized to meet the requirements specified herein.
3.2.7.4.3 Coated cloth. The coating shall be applied on the face side of the base cloth only, and there
shall be no striking through of the coating to the back of the cloth. The coated cloth shall meet the
requirements specified in Table I and when tested as specified in 4.3.2.
TABLE I. Physical properties of coated cloth
Characteristic
Requirement (min.)
Weight, oz./sq. yd.
6.3
Breaking strength, lb.
Warp
50
Filling
40
Hydrostatic resistance
No leakage
Colorfastness to crocking
"3-4" or "good"
3.2.7.4.3.1 Color. The color shall be Hatter's green and shall match the standard sample (See 6.3).
under artificial daylight having a color temperature of 7500 Kelvin (K) and shall be a good
approximation to the standard sample under incandescent lamplight at 2800 K.
3.2.7.5 Fabrication. The visor shall be cut in strict accordance with the pattern furnished. The
outside edge shall be bound with the plastic film specified in 3.2.8, stitched 1/32 +1/32, -0 inch from
folded edge of binding on top of visor with a 4-ply cotton thread as specified in 3.2.16 with 6 to 8
stitches per inch, using type stitch 301, seam type BSb-1, of ASTM-D-6193. The binding shall finish
3/16 to 1/4 inch in width on top and bottom of visor with polished side showing. The visor shall be
molded into a curved shape as shown by the standard sample.
3.2.8 Plastic film. The plastic film for the band, visor binding, band binding and the
sweatband welt shall be 0.010 inch thick and conform to ASTM-D-1593. The band and visor and
band binding shall be black and the sweatband welt shall be brown.
3.2.9 Chin strap. The chin strap material shall be made of two layers (see 4.3.2); top ply and bottom
ply of the following materials, laminated together with a suitable adhesive.
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