ABOUT INDEXING EDITORIAL BOARD ARCHIVES AUTHOR GUIDELINES SUBMIT PAPER NEWS, EVENTS AUTHOR'S PAGE CONTACT
Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
Materiale Plastice - Latest Issue

Latest Issue >>>
ARCHIVES
   Volume 60, 2023
   Volume 59, 2022
   Volume 58, 2021
   Volume 57, 2020
   Volume 56, 2019
   Volume 55, 2018
   Volume 54, 2017
   Volume 53, 2016
   Volume 52, 2015
   Volume 51, 2014
   Volume 50, 2013
   Volume 49, 2012
   Volume 48, 2011
   Volume 47, 2010
   Volume 46, 2009
   Volume 45, 2008
   Volume 44, 2007
   Volume 43, 2006
   Volume 42, 2005
   Volume 41, 2004
   Volume 40, 2003
 
<<<< back

Materiale Plastice (Mater. Plast.), Year 2005, Volume 42, Issue 2,





Limits in the Ultrasonic Activation of Polymeric Materials in Injection and Extrusion Processes


Abstract:
The paper presents some basic considerations to establish the optimum conditions for designing the ultrasonic equipment employed in plastic flow activation. In the first part, the paper presented general considerations and recommendations for the design of the ultrasonic horns. The associated conditions are submitted at a critical discussion correspondingly at the particular industrial applications. There was emphasized a particular effect of the ultrasonic activation - namely “the thermo-pellicular effect”- specific for the particularized activation conditions of the viscous-elastically mediums under pressure. The effect is characterized by the appearance of a fine layer of melted overheated material with lubricant effect on the lateral side of the ultrasonic horn. The paper includes a computer-aided application focused on the design of an ultrasonic horn employed in plastic manufacturing and some particular applications in plastics injection and extrusion. Keywords: plastic, flow, rheology, ultrasonic, activation, design, concentrator, industrial, application



Issue: 2005 Volume 42, Issue 2
Pages:
Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License


Downloads number: 0
<<<< back
 
  Search Authors
Crossref Member Badge
 DOI  logo
 Gold Open Access | Source=http://www.plos.org/  | Author=art designer at PLoS
Creative Commons License