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Hongtai Paper & Plastic
Is the quality of paper cup ink qualified? Paper cup manufacturers tell you
2025-11-09
Is the ink quality used for printing paper cups in paper cup factories environmentally friendly? Let paper cup manufacturers teach you how to distinguish
Experimental subjects: Four types of paper cups, cup A purchased from a supermarket, cup B purchased from a milk tea shop, cup C used by a certain organization, and cup D purchased from a small store.
Experimental basis: Advertising cups produced according to the new national standards cannot be used to hold alcohol
Cut the four advertising paper cups into pieces and place them in four porcelain bowls respectively. Pour 75% ethanol into each bowl until the fragments are submerged, then let them stand. After 10 minutes, the ethanol solution in the bowl containing fragments of milk tea shop advertising paper cups turned light red. The solution containing the other three types of disposable paper cup fragments did not change color, indicating that they are not qualified.
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