MANUFACTURING METHOD OF ELECTRIC AND ELECTRONIC COMPONENT SEALED WITH POLYESTER RESIN OF POLYMERIZED CYCLIC POLYESTER OLIGOMER

摘要

PROBLEM TO BE SOLVED: To solve the following problems: an epoxy type thermosetting resin so far been used for sealing an electric-electronic component is accompanied with bad smell upon thermosetting, and sealing with conventional thermoplastic resin is accompanied with bad fluidizability and thus shapes to be sealed are limited.;SOLUTION: In a manufacturing method including the step of sealing an electric-electronic component with a resin, a cyclic polyester oligomer is introduced into a die under fusing the oligomer at its melting point or higher and an electric-electronic component is sealed with a polyester resin obtained by thermo-polymerizing reaction of the cyclic polyester oligomer in the sealing die.;COPYRIGHT: (C)2011,JPO&INPIT