MANUFACTURING METHOD FOR LIQUID CRYSTALLINE POLYMER MOLDED PRODUCTS

To provide an efficient method for producing liquid crystalline polymer molded products of improved quality by suppressing blisters that may occur when liquid crystalline polymer compositions are injection molded and heat treated.SOLUTION: Injection molding is performed using a mold equipped with a...

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Bibliographische Detailangaben
Hauptverfasser:	DING SHENG ER, MASUTANI YUSUKE, MIWA KATSUMASA
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 an efficient method for producing liquid crystalline polymer molded products of improved quality by suppressing blisters that may occur when liquid crystalline polymer compositions are injection molded and heat treated.SOLUTION: Injection molding is performed using a mold equipped with a gate, cavity, and gas vent under conditions such that the total gas volume collected by the gas vent is less than 20 μg/g. Before injection molding, it is preferable to purge the inside of the cylinder of the injection molding machine.SELECTED DRAWING: None 【課題】液晶性ポリマー組成物を射出成形してなる液晶性ポリマー成形品を熱処理した際に発生しうるブリスターを抑制して、品質の向上した液晶性ポリマー成形品を効率的に製造する方法を提供する。【解決手段】ゲートとキャビティとガスベントとを備える金型を用いて、前記ガスベントにて捕集される全ガス量が、２０μｇ／ｇ以下となるような条件で射出成形を行う。射出成形を行う前に、射出成形機のシリンダー内のパージを行うことが好ましい。【選択図】なし