| 摘要 |
The present invention discloses a material-feeding structure for a mold and a casing fabrication method using the same structure. The material-feeding structure for a mold of the present invention comprises: a mold, at least one runner and a channel. The runner is disposed in the mold and has an gate at a narrower face of the runner, and the channel is connected to the gate of the runner. After molten plastic has been injected into the channel, the molten plastic moves through the channel and enters the runner via the corresponding gate to occur the reflux of the molten plastic inside the runner, whereby the colder molten plastic deposits on the bottom of the runner, and the hotter molten plastic continues to flow into the mold. After the mold is filled with the molten plastic, the molten plastic inside the mold is cooled and solidified to form a casing. Thereby, the material-feeding structure for a mold and the casing fabrication method using the same structure of the present invention can prevent dark stains and white spots from forming on the appearance of products.
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