The observed results of effects of viscosity ratio, die temperature, channel geometries on coextrusionare introduced in this paper. Meanwhile, the reasons resulting in tile effects are also analysed.

• 本文介绍了共挤物料的粘度比、模具温度和流道几何形状几个因素对共挤出的影响规律的实验观察结果，并对其产生原因进行了分析。