星巴克夜光马克杯，用喷漆工艺制作，在两次制作后，夜光马克杯的状态不同，如下图所示，呈现不同效果，两次胶水与夜光粉与水的比例都是1：1：1，可是出现了不同的外观，第二次做的夜光马克杯夜光漆不明显，不够立体，视觉冲击力不够。
两次喷漆用的夜光粉也是相同牌号的夜光粉。
分析可能是两次形成的夜光漆粘度又差异，需要在保持各种比例不变的条件下，调整夜光漆的粘度以达到解决上述现象的目的。
夜光马克杯出现差异
两次胶水与夜光粉与水的比例都是1：1：1，可是出现了不同的外观，第二次做的夜光马克杯夜光漆不明显，不够立体，视觉冲击力不够
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