Skip navigation
  • Home
  • Browse
    • Communities
      & Collections
    • Browse Items by:
    • Publication Date
    • Author
    • Title
    • Subject
    • Department
  • Sign on to:
    • My MacSphere
    • Receive email
      updates
    • Edit Profile


McMaster University Home Page
  1. MacSphere
  2. Open Access Dissertations and Theses Community
  3. Open Access Dissertations and Theses
Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/20072
Title: Hybrid Foamed Co-Injection Molding
Authors: Rogers, Karen
Advisor: Thompson, Michael
Hrymak, Andrew
Department: Chemical Engineering
Publication Date: Aug-2008
Abstract: <p>This project examines the co-injection molding of a TPO material, using a solid skin, and a microcellular core material. For useful industry applications, the density, and the tensile and flexural mechanical properties were examined, and compared to a solid injection molded TPO plaque achieve using different processing parameters and materials. Correspondingly, the foam structure was examined to determine structural effects on the final mechanical properties. It was discovered that density can be reduced by as much as 32.0% ±0.8%, while still maintaining mechanical properties comparable to those of a similar part using a solid material for the core. Elliptical cellular shapes and cells distributed more widely in the gap direction corresponded with lower density parts, yet maintained mechanical properties similar to higher density foams with circular cells concentrated along the center of the gap direction.</p> <p>Fracture initiation was examined to determine if failure occurred within the foam structure of the parts, or the foam/core interface. Observations indicate that failure depended on the type of force applied to the part, as well as the material used to form the part itself.</p>
Description: Title: Hybrid Foamed Co-Injection Molding, Author: Karen Rogers, Location: Thode
URI: http://hdl.handle.net/11375/20072
Appears in Collections:Open Access Dissertations and Theses

Files in This Item:
File Description SizeFormat 
Rogers_Karen_2008_08_master.pdf
Open Access
Title: Hybrid Foamed Co-Injection Molding, Author: Karen Rogers, Location: Thode12.66 MBAdobe PDFView/Open
Show full item record Statistics


Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.

Sherman Centre for Digital Scholarship     McMaster University Libraries
©2022 McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8 | 905-525-9140 | Contact Us | Terms of Use & Privacy Policy | Feedback

Report Accessibility Issue