Downproof Tester, Brand Name : TESTEX

Downproof tester, to determine the downproof capability of fabrics used for downgarment, quilt etc, which are filled with down, feather and fibers.
Take an agreed size specimen from the fabric to be tested to sew a pocket at specified size, fill with a certain weight of down, feathers or a mixture of both, then sew the fabric up to be a testing bag. Clamp the both sides of the bag in the holder. Determines the downproof ability of the fabric by calculating the number of down and feathers through the fabric.