VALVE PIN

To provide a valve pin that allows a resin to be less likely to remain on a tip face after injection molding is completed.SOLUTION: Provided is a valve pin for closing a gate part by sitting against a pedestal provided in the gate part for introducing a molten resin into a cavity formed in a mold. A...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KADOWAKI SATOSHI, KANEKO HIROTAKA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	To provide a valve pin that allows a resin to be less likely to remain on a tip face after injection molding is completed.SOLUTION: Provided is a valve pin for closing a gate part by sitting against a pedestal provided in the gate part for introducing a molten resin into a cavity formed in a mold. A plurality of microdimples are formed over the whole of a tip face so that contact between the tip face and the molten resin becomes point contact.SELECTED DRAWING: Figure 2 【課題】射出成形が終了した後に先端面に樹脂が残存しにくいバルブピンを提供する。【解決手段】金型内に形成されたキャビティへ溶融樹脂を導入するためのゲート部に設けられた台座に対して着座することにより、前記ゲート部を閉鎖するためのバルブピンであって、先端面と前記溶融樹脂との接触が点接触となるように、前記先端面の全体にわたって複数のマイクロディンプルが形成されている。【選択図】図２