Evaluating the processability of film blowing resins.(Report): An article from: Polymer Engineering and Science
Book Details
Author(s)Jen Shueng Tiang, John M. Dealy
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB0030XRTMQ
ISBN-13978B0030XRTM9
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on November 1, 2009. The length of the article is 8042 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: A key factor that limits the production rate in film blowing is bubble instability. Although processing conditions play an important role, it is well known that some resins are more resistant to instabilities than others. It is clear that long-chain branching enhances stability, but it is not currently possible to model the process with sufficient accuracy to establish a quantitative relationship between rheological properties and blown film processability. It would thus be useful to be able to compare the processabilities of film resins by means of a laboratory measurement. We compared two laboratory tests that may be helpful in evaluating the ability of a resin to resist instabilities in the film blowing process. One of these was a film resin tester designed to simulate some aspects of the film blowing process, and the other was an extensional rheometer. We used a set of polyethylene resins that had been used previously in an extensive study of blown film stability. The extensional rheometer clearly shows the superiority of low-density polyethylene but is not able to distinguish among polymers of other types. The melt tester, on the other hand, is sensitive to differences among linear polymers. POLYM. ENG. SCI., 49:2132-2143, 2009. [C] 2009 Society of Plastics Engineers
Citation Details
Title: Evaluating the processability of film blowing resins.(Report)
Author: Jen Shueng Tiang
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: November 1, 2009
Publisher: Society of Plastics Engineers, Inc.
Volume: 49 Issue: 11 Page: 2132(12)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: A key factor that limits the production rate in film blowing is bubble instability. Although processing conditions play an important role, it is well known that some resins are more resistant to instabilities than others. It is clear that long-chain branching enhances stability, but it is not currently possible to model the process with sufficient accuracy to establish a quantitative relationship between rheological properties and blown film processability. It would thus be useful to be able to compare the processabilities of film resins by means of a laboratory measurement. We compared two laboratory tests that may be helpful in evaluating the ability of a resin to resist instabilities in the film blowing process. One of these was a film resin tester designed to simulate some aspects of the film blowing process, and the other was an extensional rheometer. We used a set of polyethylene resins that had been used previously in an extensive study of blown film stability. The extensional rheometer clearly shows the superiority of low-density polyethylene but is not able to distinguish among polymers of other types. The melt tester, on the other hand, is sensitive to differences among linear polymers. POLYM. ENG. SCI., 49:2132-2143, 2009. [C] 2009 Society of Plastics Engineers
Citation Details
Title: Evaluating the processability of film blowing resins.(Report)
Author: Jen Shueng Tiang
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: November 1, 2009
Publisher: Society of Plastics Engineers, Inc.
Volume: 49 Issue: 11 Page: 2132(12)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
