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AN APPARATUS FOR CONTINUOUSLY REDUCING THE VISCOSITY OF MOLTEN MOLDABLE POLYMERIC MATERIAL BY SHEAR VIBRATION UNDER EXTENSIONAL FLOW TO CAUSE DISENTANGLEMENT
AN APPARATUS FOR CONTINUOUSLY REDUCING THE VISCOSITY OF MOLTEN MOLDABLE POLYMERIC MATERIAL BY SHEAR VIBRATION UNDER EXTENSIONAL FLOW TO CAUSE DISENTANGLEMENT
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机译:一种在扩展流动下通过剪切振动连续降低可熔融模塑聚合物材料粘度以引起解缠结的装置
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摘要
An apparatus and method for continuously reducing the viscosity of molten moldable polymeric material uses shear vibration under extensional flow to cause shear thinning and/or disentanglement. One or more station treatment cavities (3) are defined by a gap composed of two closely separated surfaces (6, 7) in relative motion with each other at given speed and/or submitted to relative oscillations, with given frequency and amplitude to produce a shear deformation on the molten material and a controlled variation of the gap dimension. The surfaces have a contour profile of ribs and/or bumps and/or grooves (5, 12) over which the molten moldable material can flow and/or can be dragged and/or is being pushed through and/or pumped through. The treatment cavities have an inlet (30) through which the molten moldable material can pass into, and an outlet (31) through which it can exit each treatment cavity.
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