Milk that may smell from the refrigerator some time after opening. It's best to drink quickly, but it's also difficult in a house with few families. I found an item that seems to be useful for such troubles, so I bought it.


This product, named "KN Milk Pack Cap", is a cap for paper packs such as milk and juice. By attaching it to an opened paper carton, it will prevent it from giving off an unpleasant odor or spilling when it is accidentally knocked down.

Let's try it with a 500ml (16.91us fl oz) milk carton.




It's a very simple procedure, but the mouth of the paper carton is now tightly closed. This certainly seems to be effective in preventing odor transfer! You can open and close it just by sliding the cap, so it seems to be useful even in homes with small children.


Now, let's verify the phrase "It's hard to spill the contents, so it's safe to accidentally knock it down." When I try to knock down a milk carton with about 70% of the contents left with the mouth closed ...




There was no sign of spilling to the point of doubting that it had been opened. However, the precautionary statement on the package says, "Don't leave the carton on its side. The contents may spill." So overconfidence seems to be prohibited.

It is sold on various EC sites, and the price is around 220 yen for 2 pieces. If you often drink milk or juice, why not try it?