Molding tools with biomimetic conformal venting passageways and methods for forming biomimetic conformal venting passageways in molding tools
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United States of America Patent
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Aug 10, 2021
Grant Date -
Oct 15, 2020
app pub date -
Apr 9, 2019
filing date -
Apr 9, 2019
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Abstract
A method of forming a molding tool includes performing a computer aided engineering (CAE) analysis on a molding tool design. The CAE analysis predicts flow of injection molded material and a location of gas entrapment within a molding recess of the molding tool design. At least one venting design constraint is applied to the molding tool design as a function of the gas entrapment location. Also, a biomimetic shaped passageway for venting gas away from the gas entrapment location is selected from a plurality of biomimetic shaped passageways. A computational fluid dynamic (CFD) CAE analysis of the molding tool design with the selected biomimetic shaped passageway is performed and modifications of the selected biomimetic shaped passageway are CFD CAE analyzed until a final biomimetic shaped passageway is determined and a molding tool with the final biomimetic shaped passageway is formed.
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