粘度是流体的流动阻力，本文对此进行了详细评述。讨论内容包括粘度、粘度测量、粘度单位、粘度与温度的关系、牛顿液体与非牛顿液体，以及分子量对粘度的影响。粘度的影响和影响粘度的参数与分配正确数量的粘合剂以形成所需的胶条尺寸有关。

VISCOSITY, THE RESISTANCE OF A FLUID TO FLOW, IS REVIEWED IN DETAIL. DISCUSSION INCLUDES VISCOSITY, ITS MEASUREMENT, THE UNITS OF VISCOSITY, ITS TEMPERATURE DEPENDENCE, NEWTONIAN VERSUS NON-NEWTONIAN LIQUIDS, AND THE INFLUENCE OF MOLECULAR WEIGHT ON VISCOSITY. THE IMPACT OF VISCOSITY AND THE PARAMETERS THAT INFLUENCE IT ARE RELATED TO DISPENSING CORRECT QUANTITIES OF AN ADHESIVE TO FORM THE DESIRED BEAD SIZE.