膠水主要分為兩大類：COB圍壩膠/UV膠水/普通膠水/黑膠/硅膠/環氧樹脂/雙組份膠水/PU膠水等。對于硅膠，一般都用點膠機、自動點膠機來操作，而雙組份膠水則需要使用雙液點膠機、灌膠機（AB點膠機、AB灌膠機）來實現封裝。

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 對于一些膠水性質較為特殊的單組份膠水，如PU膠水，點膠機廠家可以使用專業化用于PU膠封裝的PU膠灌膠機，而在對UV膠水進行封裝時，需要注意的是，UV膠水的特殊性要求封裝過程需要使用特定的針筒進行灌膠。