Date
2015-02-13Metadata
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Aufsatz
Injection molded components with functionally graded foam structures – Procedure and essential results
Abstract
In the past few years, foam injection molding has increasingly gained significance in the field of technical plastic components. This is due to the development of new processes and processing combinations and efforts to produce lightweight products. In this article, a special tool technology will be introduced, which aids the process of expanding the existing areas of applications. The technology enables the production of foam injection molded components with different foaming ratios. This is made possible by core movements in the closed injection mold after the cavity has been filled volumetrically with plastic melt containing blowing agent. In doing so, functionally graded components with locally differing properties can be produced in one processing step. The method (pull and foam method) is based on the idea of equipping thin-walled components with locally foamed thick-volume elements – i.e. to increase the stiffness, create spacers, or joining surfaces. Simultaneously this method aims to exceed the limitations of conventional foam injection molding, especially with regard to scope for design. This article describes the procedure and characteristics of the process. Results with regard to the density in the differentially foamed areas, the morphology and the mechanical properties in correlation with the essential processing parameters are given.
Citation
In: Journal of Cellular Plastics Volume 53 / Issue 3 (2015-02-13) , S. 299-319 ; EISSN 0021-955XAdditional Information
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFGgeförderten) Allianz- bzw. Nationallizenz frei zugänglich.Citation
@article{doi:10.17170/kobra-202011182207,
author={Heim, Hans-Peter and Tromm, Mike},
title={Injection molded components with functionally graded foam structures – Procedure and essential results},
journal={Journal of Cellular Plastics},
year={2015}
}
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2020-11-25T12:54:57Z 2020-11-25T12:54:57Z 2015-02-13 doi:10.17170/kobra-202011182207 http://hdl.handle.net/123456789/12030 Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFGgeförderten) Allianz- bzw. Nationallizenz frei zugänglich. eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ foam injection molding precision mold opening breathing mold pull and foam local foaming functional gradation core pulling foam density foam morphology bending properties 540 600 Injection molded components with functionally graded foam structures – Procedure and essential results Aufsatz In the past few years, foam injection molding has increasingly gained significance in the field of technical plastic components. This is due to the development of new processes and processing combinations and efforts to produce lightweight products. In this article, a special tool technology will be introduced, which aids the process of expanding the existing areas of applications. The technology enables the production of foam injection molded components with different foaming ratios. This is made possible by core movements in the closed injection mold after the cavity has been filled volumetrically with plastic melt containing blowing agent. In doing so, functionally graded components with locally differing properties can be produced in one processing step. The method (pull and foam method) is based on the idea of equipping thin-walled components with locally foamed thick-volume elements – i.e. to increase the stiffness, create spacers, or joining surfaces. Simultaneously this method aims to exceed the limitations of conventional foam injection molding, especially with regard to scope for design. This article describes the procedure and characteristics of the process. Results with regard to the density in the differentially foamed areas, the morphology and the mechanical properties in correlation with the essential processing parameters are given. open access Heim, Hans-Peter Tromm, Mike doi:10.1177%2F0021955X15570077 Spritzgießen Schaum Dichte <Physik> Morphologie Biegung publishedVersion EISSN 0021-955X Issue 3 Journal of Cellular Plastics 299-319 Volume 53 false
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:Urheberrechtlich geschützt