Effects of geometry and injection-molding parameters on weld-line strength.: An article from: Polymer Engineering and Science
Book Details
Author(s)Cheng-Hsien Wu, Wan-Jung Liang
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB000B7NQR6
ISBN-13978B000B7NQR5
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 July 1, 2005. The length of the article is 4720 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: Polymeric flows in microchannels are found to differ significantly from those in macrogeometries. Increasing the mechanical properties of microstructures is one of the most important issues in injection-molding processes. Weld-line characteristics of structures with different cross-sections are investigated in this study. The effects of process parameters and cross-sectional dimensions on the tensile strength of a weld line are discussed. A mold was designed in such a way that specimens with and without weld lines can be developed separately. Five specimens, with different cross-sections, are injection-molded simultaneously. Both polypropylene (PP) and high density polyethylene (HDPE) are used in this study. With the Taguchi method, four process variables: melt temperature, mold temperature, injection speed, and packing pressure were found to be the most influential. Experimental results show that the weld-line strength from a standard test is not applicable in microinjection molding. The microstructure of weld lines is clearly observed from the micrographs. POLYM. ENG. SCI., 45:1021-1030, 2005. [c] 2005 Society of Plastics Engineers
Citation Details
Title: Effects of geometry and injection-molding parameters on weld-line strength.
Author: Cheng-Hsien Wu
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: July 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 7 Page: 1021(10)
Distributed by Thomson Gale
From the author: Polymeric flows in microchannels are found to differ significantly from those in macrogeometries. Increasing the mechanical properties of microstructures is one of the most important issues in injection-molding processes. Weld-line characteristics of structures with different cross-sections are investigated in this study. The effects of process parameters and cross-sectional dimensions on the tensile strength of a weld line are discussed. A mold was designed in such a way that specimens with and without weld lines can be developed separately. Five specimens, with different cross-sections, are injection-molded simultaneously. Both polypropylene (PP) and high density polyethylene (HDPE) are used in this study. With the Taguchi method, four process variables: melt temperature, mold temperature, injection speed, and packing pressure were found to be the most influential. Experimental results show that the weld-line strength from a standard test is not applicable in microinjection molding. The microstructure of weld lines is clearly observed from the micrographs. POLYM. ENG. SCI., 45:1021-1030, 2005. [c] 2005 Society of Plastics Engineers
Citation Details
Title: Effects of geometry and injection-molding parameters on weld-line strength.
Author: Cheng-Hsien Wu
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: July 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 7 Page: 1021(10)
Distributed by Thomson Gale
