A-A-54337
|
Characteristic |
Requirement |
|
Weight |
3.5 ounces/square yard minimum |
|
Total yarns per square inch |
128 minimum |
|
Ends per inch |
68 nominal |
|
Picks per inch |
60 nominal |
|
Breaking strength |
|
|
Warp |
55 pounds minimum |
|
Filling |
55 pounds minimum |
|
Weave |
Plain |
|
Dimensional stability |
|
|
Warp |
2 percent shrinkage maximum |
|
Filling |
2 percent shrinkage maximum |
The thread for all the sewing operating shall be cotton-covered polyester thread ticket number 70, 2 ply, or spun polyester thread, ticket number 70, 2 or 3 ply. The color of the thread shall be orange TL C A 66076.
The sheet shall have a 35 gauge heat resistant rubber elastic. 1/4 to 3/8 inch wide, secured across each end, including the corners, with a suitable bias binding tape to provide a snug fit over the following size mattresses.
Size 1 – 30 by 75 by 7 inches
Size 2 – 36 by 78 by 6-1/2 inches
All items shall be straight and of uniform width. Hems shall be sewn so that no raw edges, run-offs, twists, pleats, puckers, or open seas result. Ends of all seams and stitching, when not caught in other seams or stitching, shall be backtacked or backstitched not less than 1/2 inch. Thread breaks shall be secured by stitching back of the breaks not less than 1/2 inches at each break. All thread ends shall be trimmed to a length of not more than 1/2 inch.
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