| 摘要 |
The product is a multiple-bore rigid insulator of thermosetting material with a multiple-bore elastomeric grommet united therewith. The rigid insulator is placed in a mold with multiple core pins extending from the multiple bores thereof through a mold cavity. The face of the rigid insulator is coated with uncured thermosetting adhesive and then, with the mold heated, uncured elastomeric material is extruded under heat and pressure into the mold cavity to form the grommet around the core pins and to bond the resultant grommet to the face of the insulator. When the product is ejected from the mold and from the core pins, the grommet assumes a desirable tapered configuration.
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