Improvement of the flow of polyethylene terephtalate (PET) by interposition of ball strata at the inlet of the spinning die

Abstract Polyethylene terephthalate (PET) is a material developed by industrial manufacturers, but which also abundantly found as recovery in many daily activities. Since it largely used the textile industry, objective of this work to improve flow polyethylene spinning an application using certain polymers produce quality fabrics. The methodology adopted here interpose layers balls form porous medium at entry melt-index laboratory or setting. This allowed characterize materials’ properties such rate, index and viscosity. study two grids diameter 9.50 mm layer ceramic beads equivalent included intervals [0.25 - 1.6 mm] [1.6 2.5 mm]. Under load 2,6 kg, applied for measurement both its fluidity index, density results obtained show decrease compared with manufacturers’ reference values when ball states are interposed input die. was justified braking into formed constitute state. Moreover, increase viscosity molten polymer after interposing confirmed opposite behaviour these characteristics. Future works seek influence size on characteristics viscosity, hot material.