棉花经轧花后剩下的棉籽,别看它籽粒很小,可是从里到外,浑身都是宝哩！棉籽外围的一层厚厚的短纤维,就是人们常说的短绒。棉籽短绒经过三道脱绒后,分别得到头道绒、二道绒、三道绒。这些短绒在工业上用处很广。头道绒的绒长在十三毫米以上,能纺六至十二支的低级纱,可以织成棉毯、绒衣、绒布、药用纱布、绷带等,还可以弹成短绒网套和制造高级纸张。二道绒在十二毫米以下,是制造赛璐璐和电木等塑料的原料;用二道绒制取的硝酸纤维素,是无烟火药的主要原料。三道绒是贴在棉籽上 The remaining cottonseed cotton after cottonseed, do not look it a very small grain, but from the inside out, covered with treasure! A thick layer of short fibers on the periphery of the cottonseed is commonly known as flocking. Cottonseeds after three cashmere velvet, respectively, the first dull, Erdaogou, three velveteen. These linters are very industrially useful. The top velvet velvet long above thirteen millimeters, spinning six to twelve low-grade yarn, can be woven into a blanket, velvet clothing, velvet, medicinal gauze, bandages, etc., can also be made into a flocking slender net and the manufacture of advanced Paper. Erdaogua less than 12 mm, is to create celluloses and bakelite and other plastic raw materials; made with two velvet nitrocellulose, smokeless powder is the main raw material. Three velvet is attached to cottonseed