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Format: HTML Label: Thomson Gale Manufacturer: Thomson Gale Publication Date: March 01, 2006 Publisher: Thomson Gale Release Date: March 21, 2006 Studio: Thomson Gale Browse for similar items by category: Click to Display Editorial Review: Product Description: This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on March 1, 2006. The length of the article is 5926 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. From the author: The understanding of the basic physical effects of viscoelasticity on drawing performances in the coating process leads to a useful approach to link the rupture of the polymer melt to critical processing conditions. In particular, we show that when solving the drawing problem in the air gap with a simple constitutive equation--like the upper convected Maxwell model--a mathematical inconsistency appears for some drawing parameters. This mathematical instability may be experimentally correlated to the occurrence of melt-rupture, giving rise to a discussion on the effect of viscoelastic properties on drawing performances. Results are given in terms of a diagram representing the maximum drawing ratio Dr with respect to the Deborah number De. A master curve, obtained form experimental results, accounts for the temperature, melt-index, air-gap height, and extrusion output dependences. The limitations of the "universality" of the concept are discussed later. POLYM. ENG. SCI., 46:372-380, 2006. [c] 2006 Society of Plastics Engineers Citation Details Title: The draw ratio-Deborah number diagram: a useful tool for coating applications. Author: S. Bourrigaud Publication: Polymer Engineering and Science (Magazine/Journal) Date: March 1, 2006 Publisher: Thomson Gale Volume: 46 Issue: 3 Page: 372(9) Distributed by Thomson Gale 
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