The Effect of Damping Block Design on Stability of Ploymer Coextrusion Process

Abstract:

As final component of coextrusion system in polymer industry to produce product with multi-layer different materials, the coextrusion-die can be regarded as the most important determinant that can influence product quality directly. For design of die-cave that can make uniform pressure and speed distribution for different materials, geometry structure of die-cave and rheology performances of materials must be taken into consideration. In order to reduce the influence of operation uncertainty of polymer extrusion, damping block can be used to make adjustment for flowing speed of different materials. In this paper, a finite element method based simulation is made to analyze the impact of the damping-block to the uniformity of coextrusion flowing. With the simulation result, control methods for coextrusion quality are discussed for damping-block design and operation condition settings.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 3018-3022
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.3018
• Online since: May 2013
• Authors: He Rui Zhang, Xiao Feng Liu, Bing Zhang
• Keywords: Co-Extrusion, Damping Block, Extrusion Uniformity, FEM Simulation

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