Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optimization of overmolding method for three-dimensional hollow molded article










Image Number 102 for United States Patent #5942169.

A method of over-molding used to produce a three-dimensional hollow molded article employs a core made of resin having a hollow portion. The core is placed in a cavity of a mold. Molten resin is injected into a space formed by the core and a cavity wall of the mold through a resin injection portion. In this way at least part of the outer surface of the core is covered with resin. Deformation of the core due to the pressure of the resin during injection is prevented in one of a number of different ways. The over-molding method is optimized by calculating a temperature distribution and a pressure distribution of the molten resin in the step of injecting the molten resin into the space by numerical analysis. The displacement distribution and for the stress distribution of the core caused by pressure applied to the core by flow of the molten resin is calculated by a numerical analysis on the basis of the calculated temperature distribution and pressure distribution. The form of the hollow molded article, the form of the core, the form of the mold, and the molding conditions can thereby be optimized on the basis of at least one of the calculated displacement distribution and the stress distribution so as to minimize deformation of the core.








 
 
  Recently Added Patents
Optical coherence tomography imaging system and method
Vaporization in oxidation to phthalic anhydride
Device for cushioning of compression surfaces
Battery module
Middle in-situ doped SiGe junctions for PMOS devices on 28 nm low power/high performance technologies using a silicon oxide encapsulation, early halo and extension implantations
Method and apparatus for multimodal visualization of volume data sets
Identifying a wireless network device across factory resets
  Randomly Featured Patents
Data quality and ambiguity resolution in a doppler radar system
Compound semiconductor device for reducing the influence of resistance anisotropy on operating characteristics thereof
Method of treating fibrproliferative disorders
Methods of using growth inhibitory peptides
Methods and systems for providing information about programs available for viewing
Hand-held electric hair dryer
Customer controlled manufacturing process and user interface
Organic compounds
Electron emission device and display device using the same
Combustion process and apparatus therefore containing separate injection of fuel and oxidant streams