Enhancement of convective heat transfer to polymer manufacturing molds.: An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00081YBJ2
ISBN-13978B00081YBJ7
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on January 1, 2005. The length of the article is 5312 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: Many complex and dimensionally stable plastic products are manufactured using processes such as blow molding, thermoforming, injection molding, and rotational molding due to various advantages offered by these techniques. However, in many cases, product cycle times--and hence productivity--are limited by the time required to heat up and cool down the mold and the product. This is particularly true for rotational molding of thermoplastics. Due to the complex rotation of the mold, heating and cooling are most commonly achieved by convection to the external surfaces of the mold using air as the transfer medium. The objective of this work is to achieve substantial enhancement in convective heat transfer to mold exteriors and ultimately to reduce production cycle times. In this paper, the application of extended surfaces and roughened textures to molds is investigated. 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. A steady state analysis using well-established techniques has been performed to estimate the heat transfer enhancement, and a series of simple experiments have been carried out. The predicted enhancements to heat transfer are substantial, and have been verified by the preliminary experimental results. POLYM. ENG. SCI., 45:114-124, 2005. [c] 2004 Society of Plastics Engineers
Citation Details
Title: Enhancement of convective heat transfer to polymer manufacturing molds.
Author: M.Z. Abdullah
Publication:Polymer Engineering and Science (Refereed)
Date: January 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 1 Page: 114(11)
Distributed by Thomson Gale
From the author: Many complex and dimensionally stable plastic products are manufactured using processes such as blow molding, thermoforming, injection molding, and rotational molding due to various advantages offered by these techniques. However, in many cases, product cycle times--and hence productivity--are limited by the time required to heat up and cool down the mold and the product. This is particularly true for rotational molding of thermoplastics. Due to the complex rotation of the mold, heating and cooling are most commonly achieved by convection to the external surfaces of the mold using air as the transfer medium. The objective of this work is to achieve substantial enhancement in convective heat transfer to mold exteriors and ultimately to reduce production cycle times. In this paper, the application of extended surfaces and roughened textures to molds is investigated. 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. A steady state analysis using well-established techniques has been performed to estimate the heat transfer enhancement, and a series of simple experiments have been carried out. The predicted enhancements to heat transfer are substantial, and have been verified by the preliminary experimental results. POLYM. ENG. SCI., 45:114-124, 2005. [c] 2004 Society of Plastics Engineers
Citation Details
Title: Enhancement of convective heat transfer to polymer manufacturing molds.
Author: M.Z. Abdullah
Publication:Polymer Engineering and Science (Refereed)
Date: January 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 1 Page: 114(11)
Distributed by Thomson Gale
