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Eliminating Surface Melt Fracture Using PPA: The Role of PPA Domain Size

Published

Author(s)

Mathurin G. Meillon, David C. Morgan, D Bigio, S B. Kharchenko, Kalman D. Migler, S Oriani

Abstract

The investigation of the elimination of sharkskin using polymer processing aids (PPA) requires the consideration of factors such as: PPA domain size, operational shear rate and matrix/PPA viscosity ratio. In this work, the role of PPA droplet size in the elimination of surface melt fracture was investigated. The parameters monitored were the die entrance pressure, the PPA coating thickness and the extrudate appearance. We found a substantial enhancement in coating thickness and speed upon increasing the droplet size.
Proceedings Title
Society of Plastics Engineers, Annual Technical Conference| 62nd Volume II | ANTEC 2004: Annual Technical Conference Proceedings | Society of Plastics Engineers
Volume
121(4)
Conference Dates
May 1, 2004
Conference Title
ANTEC (Society of Plastics Engineers. Technical Conference)

Keywords

aid, coating, extrusion, polyethylene, processing, sharkskin, size

Citation

Meillon, M. , Morgan, D. , Bigio, D. , Kharchenko, S. , Migler, K. and Oriani, S. (2004), Eliminating Surface Melt Fracture Using PPA: The Role of PPA Domain Size, Society of Plastics Engineers, Annual Technical Conference| 62nd Volume II | ANTEC 2004: Annual Technical Conference Proceedings | Society of Plastics Engineers, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852304 (Accessed July 22, 2024)

Issues

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Created May 1, 2004, Updated February 17, 2017