We are being asked about aluminum foil sealing these days, so we want to share more with you. Really, you will find that the small foil seal of the cosmetic tube is not "small".

1. Is the foil sealed by machine or by hand?

Many people think they are the same, but in fact they are not.

The handmade foil has glue, which may react chemically with cream, gel or other cosmetics in the squeeze tube. But the machine sealing foil does not; their PE surface will be melted by the machine in order to stick to the pipe hole. Its effect is very big, can prevent the cosmetics from leaking or permeating.

2. There is plastic residue on the mouth of the makeup tube, which does not look good. When we peel off the tin foil, it should fall off, right?

Since plastic is melted when the machine is sealed, it is normal to seldom leave plastic. This situation rarely occurs and does not actually affect the use.

But what if there is a lot of plastic residue and it is difficult to peel off? The reason is that the temperature of the aluminum foil sealing machine may be too high, but sometimes it is inevitable due to the unstable operation of the machine. Sanrong sealed them and inspected them to control their small number in mass production.