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
System for seeking for an optimal configuration of a bi-, tri- or multi-ventricular cardiac resynchronization implanted device
Anti-infective derivatives, method for the production thereof, pharmaceutical compositions containing same and uses of said derivatives in treatment
Lithographic apparatus and device manufacturing method
Power storage device and method for manufacturing the same
Buildable dinnerware
Pickup device and method for manufacturing the same
Optical scanner and image-forming device
  Randomly Featured Patents
Polycarbonate compositions having good mold-release properties
Process for oxidation of steroids and genetically engineered cells used therein
Pharmaceutical preparations for topical application which contain salts of alkanecarboxylic acids
Movement measuring interferometer and driving system
Rotating advertising sign with rotating louvers
Resin composition capable of exhibiting high melt viscoelasticity, aromatic polyester resin foamed body produced therefrom and process for producing the foamed body
Tremolo arm mounting for stringed instrument
Process for the preparation of amines
Electrophoretic method
Grain mill