A-A-53401
Each bandage shall be one continuous piece and shall be evenly and neatly rolled with the adhesive mass to the inside, on a suitable rigid core of approximately 1 inch diameter. The bandage shall be free of ravelings and loose threads.
Each bandage shall be capable of being stretched in the warp direction without mechanical force to a minimum length of 5 yards, and testing for stretch shall be determined by stretching manually. The bandage shall be a minimum of 3 yards unstretched. After the fabric backing has been stretched in the warp direction and then released, the fabric shall return to its approximate original relaxed condition.
The fabric backing shall be a minimum of 89 percent cotton and the remainder shall be spandex and polyester. The spandex shall be covered with polyester. The warp shall consist of a minimum of 24 cotton yarns per inch and a minimum of 12 polyester covered spandex strands per inch. The filling shall have a minimum of 28 cotton yarns per inch. The fabric shall have a minimum weight of 7 ounces per square yard, and the color of the fabric shall be off-white (natural).
For the fabric backing, the thread count per inch and the weight per square yard shall be in the relaxed condition. The number of threads per inch shall be in accordance with Federal Test method Standard No. 191, method 5050 except the average of the results obtained from three places on each sample roll shall be the thread count for the sample roll.
The adhesive on the fabric backing shall be pressure-sensitive, spread on one size of the fabric and shall be a smooth homogeneous blend of new natural and synthetic rubber, plasticizer, fillers and resins. The color of the adhesive mass shall be ivory or off-white. The adhesive coating on the roll shall be uniformly and properly applied, substantially free of breaks and shall not be toxic or irritating to the skin.
The minimum weight of the adhesive mass shall be 127 gm/m2 and shall be determined in the following manner:
Weigh a specimen of the finished bandage to the nearest thousandth of a gram. Remove all of the adhesive mass from the sample with a suitable solvent. Dry, then reweigh sample. The difference between the two weighings is the weight of adhesive mass of the sample. Convert this weight to gm/m2.
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