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Cellular distribution and warpage deformation in double-sided in-mold decoration combined with microcellular injection molding process.
- Source :
-
Journal of Materials Processing Technology . Aug2023, Vol. 317, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- A single-sided in-mold decoration combined with microcellular injection molding (S-IMD/MIM) process uses one decorative film to cover apparent defects of light-weight plastic products. The S-IMD/MIM process results in unbalanced temperature and uneven cellular distribution, and consequently large warpage deformation. In order to reduce the warpage, an innovative method is proposed by utilizing double-sided in-mold decoration combined with microcellular injection molding (D -IMD/MIM) process. The method sticks two decorative films to both inner walls of mold cavity for injection molding. This work takes a spline as a sample for numerical simulation and molding experiment. The results show that D -IMD/MIM process brings about balanced temperature distribution inside melts such that cells inside splines are stratified and symmetrically distributed. In such a case, there is less thermal stress inside spline as well as small warpage deformation of spline. By comparison with S-IMD/MIM spline, D -IMD/MIM spline has the warpage with a 71.68 % of reduction. It indicated that D -IMD/MIM process may effectively suppress warpage deformation of molded products. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09240136
- Volume :
- 317
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Processing Technology
- Publication Type :
- Academic Journal
- Accession number :
- 163766764
- Full Text :
- https://doi.org/10.1016/j.jmatprotec.2023.117982