Some properties, such as forced transportation, narrow residence time distribution, good self-cleaning and small shear force etc, were behaved in intermeshing counter-rotating twin screw extruder.

• 啮合异向双螺杆挤出机具有物料强制输送、物料停留时间窄、自洁性好、物料受剪切作用小等特点，由于人们对其混合理论的研究的欠缺，使其在物料混合方面的应用受到限制。