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PROCESS FOR REDUCING SHARKSKIN MELT FRACTURE DURING EXTRUSION OF ETHYLENE POLYMERS
PROCESS FOR REDUCING SHARKSKIN MELT FRACTURE DURING EXTRUSION OF ETHYLENE POLYMERS
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机译:减少乙烯聚合物挤出过程中鲨鱼皮熔体破裂的方法
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摘要
A method for reducing sharkskin melt fracture during extrusion of a molten narrow molecular weight distribution linear ethylene polymer which comprises extruding said polymer through a die having a die gap greater than about 50 mils and wherein at least a portion of one surface of the die lip and/or die land in contact with the molten polymer is at an angle of divergence or convergence relative to the axis of flow of the molten polymer through the die.
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