A-A-2581
Examination for visual and dimensional defects. The sample unit for this examination shall be one plate. The plate shall be examined for defects in accordance with Table I. Both sides of the plates shall be examined. The inspection level shall be S-4 and the AQL shall be 2.5 expressed in defects per hundred units.
TABLE I. Visual and dimensional defects.
|
Examine |
Defects |
|
Color |
Not white, or not color specified, when applicable. |
|
Appearance |
Not clean: presence of slime spots, grease, oil, foreign matter, dust, dirt, or finger marks. Finish not pressed, or uniformly smooth. |
|
Workmanship |
Any hole, wrinkle, tear, cut, crack, scuffed, or buckled area. Any delamination (laminated plates only), blister, distortion, malformation or warpage. Rough edges. |
|
Construction |
Not type specified. Plates do not nest; base not flat; plate tilts, tips or rocks when placed on a smooth surface. |
|
Dimensions |
Any dimension varying from the dimensions specified by more than the allowable tolerance. |
|
Area of compartments |
Not in proportion specified. |
|
Food surface area |
Less than specified. |
Testing of the end item. The end item shall be tested
for the applicable characteristics. The sample unit shall be six plates for use
in the following tests: one plate for rigidity, one plate for water resistance,
one plate for grease resistance and three plates for reflectance. The sample
unit shall be drawn at inspection level S-1 and the acceptable quality level
(AQL) shall be 4.0 percent defective.
Test Methods
Rigidity. The test plate shall be mounted on a Marks III plate rigidity
tester per manufacturers instructions. The test plate shall be oriented on the
tester such that the force will be applied to the plate rim where the short rib
intersects the rim. The test plate shall be deflected one-half inch and a
measurement taken of the force required for this deflection. A minimum force of
250 grams shall be necessary to cause the required deflection. Any force less
than 250 grams shall be cause for failure.
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