Resources Contact Us Home
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
Monitoring cloud-runtime operations
Plural component proportioner
Modulation of TIM receptor activity in combination with cytoreductive therapy
Categorization of design rule errors
2,5-disubstituted piperidine orexin receptor antagonists
Hepatitis C virus inhibitors
  Randomly Featured Patents
Red blood cell separation method
Humidifier bottle assembly
Hydantoin diacrylate compounds
Battery having a built-in controller
Process for distributing objects
High performance radar display
Clip-on task light
Belt noise/vibration control mechanism
Method for thickening and dewatering slurry sludge
Semiconductor component and method for producing a semiconductor component