Wheat dextrin is also a good source of dietary fiber. Wheat dextrin is one of various dextrins used in the textile industry for printing cotton fabrics. It is also used as an adhesive for porous substances, in the paste on envelopes, labeling adhesives, postage stamps, gummed tape and a variety of other adhesive uses.heat field Photo Credit Design Pics/Design Pics/Getty Images. Wheat dextrin is a versatile product that is primarily used in the textile, adhesive and food industries, and as a dietary fiber to improve digestion. Wheat starch is chemically processed to make wheat dextrin.