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Real Time Video Techniques in the Analysis of Blown Film Instability
17
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0
References
1992
Year
Materials SciencePolyethylenes PlaysEngineeringVideo AnalysisVideo ManipulationMi LdpeVideo ProcessingMechanical EngineeringPolymer SciencePolymer ProcessingPlastic DegradationPolymer AnalysisMi LldpeVideo RestorationVideo ForensicsBlown Film Instability
Abstract This paper describes a device which was developed to measure the degree of instability during blown film processing. Two types of data analysis are developed which can be used to analyze the instability data and the relative merits of each are discussed. The paper also describes how the device was used to measure the effect of adding two stabilizers (2 MI LDPE and 0.25 MI LDPE) at different concentrations to a 1 MI LLDPE during blown film processing. The process stability improved with higher concentrations of either LDPE with the 0.25 MI LDPE having the stronger effect. These results are consistent with the belief that long chain branching in polyethylenes plays a major role in stabilizing the blown film processing of polyethylenes.