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Extrusion process optimization for toughness in balloon filmsAn experimental optimization process for blown film extrusion is described and examined in terms of the effects of the technique on the toughness of balloon films. The optimization technique by Cantor (1990) is employed which involves the identification of key process variables including screw speed, nip speed, bubble diameter, and frost-line height for analysis to optimize the merit function. The procedure is employed in the extrusion of a low-density polyethylene polymer, and the resulting optimized materials are toughness- and puncture-tested. Balloon toughness is optimized in the analytical relationship, and the process parameters are modified to attain optimal toughness. The film produced is shown to have an average toughness of 24.5 MPa which is a good value for this key property of balloon materials for high-altitude flights.
Document ID
19930027358
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cantor, K. M.
(NASA Headquarters Washington, DC United States)
Harrison, I. R.
(Pennsylvania State Univ. University Park, United States)
Date Acquired
August 15, 2013
Publication Date
February 1, 1993
Publication Information
Publication: Advances in Space Research
Volume: 13
Issue: 2
ISSN: 0273-1177
Subject Category
Nonmetallic Materials
Accession Number
93A11355
Distribution Limits
Public
Copyright
Other

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