塑料卡扣，常用于两个塑料对象的结合，如笔记本、手机之塑料外壳。塑料卡扣有的是设计成组合后不会再开启的，有的则是设计成组合后还可以开启的。常见的塑料卡扣种类有悬臂式、L型与U型。
Plastic buckles are often used for the combination of two plastic objects, such as the plastic case of notebooks and mobile phones. Some plastic buckles are designed to be combined and will not be opened again. Others are designed to be combined and can be opened. Common types of plastic buckles are cantilever type, L type and U type.