| 摘要 |
In order to waterproofing a plurality of wires which constitute a wire harness passed through a through hole formed in a grommet, a lower mold is provided with a first recessed portion, and a upper mold is provided with a second recessed portion. The first recessed portion and the second recessed portion define a cavity when the upper mold and the lower mold are integrated, such that a cross section of the cavity is substantially identical with a cross section of the through hole formed in the grommet. The wires are placed on the first recessed portion of the lower mold. Then, the wires are coated with a water stop agent. Further, the wires are applied with vibration so as to permeate the water stop agent into a gap between the wires. The upper mold and the lower mold are integrated such that a cross section of the wire harness is matched with a cross section of the cavity. The water stop agent permeated into the wires is solidified.
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