Real Time Video Techniques in the Analysis of Blown Film Instability

P. A. Sweeney; G. A. Campbell; F. A. Feeney

doi:10.3139/217.920229

Article

Real Time Video Techniques in the Analysis of Blown Film Instability

P. A. Sweeney , G. A. Campbell and F. A. Feeney

Published/Copyright: May 27, 2013

Published by

Become an author with De Gruyter Brill

Submit Manuscript Author Information

From the journal International Polymer Processing Volume 7 Issue 3

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.

* Mail address: Prof. Dr. G. A. Campbell, Polymer Fabrication and Processing Laboratory, Department of Chemical Engineering, Clarkson University, Potsdam, NY 13699-5705, U.S.A.

Received: 1991-2-21

Accepted: 1992-1-17

Published Online: 2013-05-27

Published in Print: 1992-09-01

You are currently not able to access this content.

Articles in the same Issue

https://doi.org/10.3139/217.920229