3 major reasons why the paint on the thermos cup falls off

Oncethe thermos cupis used for a long time, many people find that the paint is peeling. Although it does not affect the insulation effect of the cup, the appearance and feel have declined a lot, which is really a pity. Today, let's introduce in detail how the thermos cup is painted, the real cause of paint peeling and the remedy, hoping to help everyone who loves to drink hot water.

How is the thermos cup painted?

Most thermos cups are painted by automatic spraying first, and then printed by baking or thermal transfer process. Some will add a layer of pearlescent paint to the cup body to make the paint more durable. Normal use generally has the problem of paint peeling in 1-3 years. But there are still some thermos cups that have lost their paint not long after they were bought. What is the reason?

Why does the paint fall off?

The most common reason is that hard objects scratch, bump or strong impact may cause paint to fall off;
The second is contact with heat source, grease or corrosive/volatile liquid, which causes the paint to soften and fall off, mostly during the cleaning process;
The paint itself is not strong, which appears on some low-priced or low-quality thermos cups that cut corners;
If you are very pursuing the appearance of the cup, it is recommended to buy a thermos cup cover to protect the cup before use, to reduce the number of collisions and scratches as much as possible, and the chance of paint falling off is also reduced.

How to deal with paint falling off?

1. Use nail polish/marker/paint pen to DIY cover or sticker to cover

Buy nail polish of the same color to cover the place where the paint falls off, or you can DIY draw patterns. Friends who are handy can try it, and the same is true for markers. In addition, many thermos cup merchants now also give away stickers, most of which are relatively thin and do not affect the feel. The disadvantage is that it is not durable and needs to be repaired again after a period of time.

2. Scrape or clean the paint

If you don't have high requirements for the appearance of the thermos cup, you can scrape or clean the paint to expose the stainless steel plate, which feels good. Please note that if the cup is rusted after removing the paint, it is recommended that you stop using it, because your water cup may not be made of stainless steel, so as not to affect health and safety.

3. Get a new cup

If you encounter serious paint peeling and you can't stand it, then get a new cup~ The old cup can be placed at home and used for storage.