Rotational molding cycle time reduction through surface-enhanced molds, Part B: experimental study.: An article from: Polymer Engineering and Science
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This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on September 1, 2007. The length of the article is 5069 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: Rotational molding is a process used to manufacture hollow plastic products, and has been heralded as a molding method with great potential. Because of long production cycle times, which are limited by the time required to heat-up and cool-down the mold and the product, its productivity is hampered. To address this issue, exterior mold modification techniques (i.e. the application of extended and rough surfaces) have been employed to enhance heat transfer to and from molds, ultimately reducing cycle times. Extended surfaces have the potential to enhance heat transfer by increasing the surface area. Roughness elements are utilized in conjunction with turbulent flows, also producing significant increases in heat transfer rates. Experimental results presented here demonstrate very significant cycle time reductions through the use of surface-enhanced molds. The experimental savings are in the order of 18 and 28%, whereas the predicted cycle time reductions are around of 21 and 32% for roughness-enhanced and pin-enhanced molds, respectively. Although the prediction methods have been unable to forecast the exact experimental cycle times very accurately, they have proved to be useful for predicting the approximate cycle time reductions and the relative rankings of the plain and the surface-enhanced molds. POLYM. ENG. SCI., 47:1420-1429, 2007. [c] 2007 Society of Plastics Engineers
Citation Details
Title: Rotational molding cycle time reduction through surface-enhanced molds, Part B: experimental study.
Author: M.Z. Abdullah
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2007
Publisher: Thomson Gale
Volume: 47 Issue: 9 Page: 1420(10)
Distributed by Thomson Gale
From the author: Rotational molding is a process used to manufacture hollow plastic products, and has been heralded as a molding method with great potential. Because of long production cycle times, which are limited by the time required to heat-up and cool-down the mold and the product, its productivity is hampered. To address this issue, exterior mold modification techniques (i.e. the application of extended and rough surfaces) have been employed to enhance heat transfer to and from molds, ultimately reducing cycle times. Extended surfaces have the potential to enhance heat transfer by increasing the surface area. Roughness elements are utilized in conjunction with turbulent flows, also producing significant increases in heat transfer rates. Experimental results presented here demonstrate very significant cycle time reductions through the use of surface-enhanced molds. The experimental savings are in the order of 18 and 28%, whereas the predicted cycle time reductions are around of 21 and 32% for roughness-enhanced and pin-enhanced molds, respectively. Although the prediction methods have been unable to forecast the exact experimental cycle times very accurately, they have proved to be useful for predicting the approximate cycle time reductions and the relative rankings of the plain and the surface-enhanced molds. POLYM. ENG. SCI., 47:1420-1429, 2007. [c] 2007 Society of Plastics Engineers
Citation Details
Title: Rotational molding cycle time reduction through surface-enhanced molds, Part B: experimental study.
Author: M.Z. Abdullah
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2007
Publisher: Thomson Gale
Volume: 47 Issue: 9 Page: 1420(10)
Distributed by Thomson Gale
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