The result shows that the extensional flowing of the melt occurs in convergent die resulting in intense entrance elastic effect and distinct extrusion swell.

• 结果表明 ,圆锥短口模挤出过程中 ,熔体在收敛流道受到拉伸流变 ,导致强烈的入口弹性效应 ,表现为熔体在短口模挤出时显著的挤出胀大。