Patent ID: 7261854

Claim:
An insert molding technique for shaping an insert-mold product covered with resinous material on an outer circumference of an insert component, comprising opening a mold locating the insert component at a predetermined position in the mold when the mold is in the open state using a support for holding the insert component outside of the mold, extruding the resinous material in a molten state as a tube through a die into the mold, the insert component being located in the interior space of the tube, and closing the mold to clamp and to cover the insert component with the tubular resinous material in conformity with the contour of the insert component; wherein after the extruding step, the closing step follows, in which an extrusion-side opening of the tubular resinous material is brought into contact with part of the insert component or the support and closed, and by sucking air from the interior space of the resinous material, the insert component is covered with the tubular resinous material and shaped in conformity with the contour of the former.