New developments in CAE technology for the gas-assisted injection moulding process

Developments in computer aided engineering (CAE) technology for gas-assisted injection molding are presented. These include: the verification of numerical analyses with experimental observations; versatile functions which enable the user to simulate different methods of gas-assisted injection molding; post-filling simulation to account for the secondary gas penetration due to volumetric shrinkage of the polymer melt; and establishment of general guidelines for the design and manufacture of gas-assisted injection molded parts. The characteristics of gas-assisted injection molding, a discussion of the developments, and examples that illustrate the general guidelines for the design and manufacture of gas-assisted injection molded parts, are presented.