| Summary: | 碩士 === 南台科技大學 === 機械工程系 === 98 === In-Mold Decoration (IMD) is a new plastic decoration technology, which has the
advantage of reducing the product follow-up decoration procedures, such as spray
painting、electroplating、sculpture lining,…etc.. Formerly the IMD decoration had been
widespread applied to products with regular and surface curvature. Until recently the
problems of decoration film fixed position and film wrinkling due to curved surface
have been overcome, the IMD technology makes treating the complex surface possible.
Moreover, the common and usual defects during the IMD process are warpage defect
created by not uniform cooling, and film scour and shear stress problem due to plastic
material filling process. The purpose of this study is to utilize the CAE mold flow
analysis to solve forming problems of complex surfaces in the IMD process. In addition,
the Taguchi method was used to evaluate the warpage problem and shear stress problem
in order to maximize the process parameters. The testing results indicate that packing
phase number、plastic temperature and packing pressure are the main factors affecting
the warpage/deformation, plastic temperature、injection time and mold temperature are
key process factors influencing shear stress.
|
|---|
