shellac record

78轉蟲膠唱片是留聲機專用唱片，出版年代約為 1890到 1950年，其內容記錄當時的樂音，呈現社會文化等多元風貌，為彌足珍貴的歷史文物。由於其質硬但易碎，加上天災與保存不當等因素，許多遺留下來的 78轉蟲膠唱片，多有破裂損傷的情形，亟需修補始能聆聽完整內容。本文敘述 78轉蟲膠唱片的特性與價值，並說明各種破損情形的修補步驟，以期能妥善保存此類文物。

78 rpm records published between 1890 and 1950 for gramophones are culture antiquities, but their shellac platters are extremely fragile, cracking and vulnerable to breakage. For cultural heritage preservation, this article describes the distinguishing characteristics, values and detailed repairing procedures of old shellac 78 rpm records.