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The printing of art on aluminum cans is a hard job. As shown in this video, as many as five different colors are applied with rollers and baked on with heat before being varnished to keep them from rubbing off. Chemicals that work with UV light can also be used in the printing process. People worldwide have so many custom aluminum cans on their store shelves that it's surprising how hard it is to recycle them.
Slight chemical magic is needed for the colors to stick to the non-absorbent aluminum surface. Some smaller companies don't bother with printing their cans because they don't want to deal with that.
It's the same when printing bar codes on shrink-wrapped cans, too. It may seem like there isn't as much of a need to be very careful to print these codes. This is because the brand doesn't depend on the lot number. However, these codes are essential to meeting laws and keeping quality, so there must be a way to get around them. Some of the best ways to deal with this issue will be discussed in more detail.
When you print on aluminum cans, there are a lot of problems.
During making aluminum cans from aluminum blanks, a lot of the printing and varnishing is done. It makes, prints, and distributes empty aluminum cans in bulk for a company specializing in aluminum cans. They're suitable for printing and finishing because they allow you to be very precise about how the printing works, which is very important. Putting codes on aluminum cans later in the manufacturing process is not the case.
People often put a lot of numbers and a date on aluminum cans. The lot number is used to keep an eye on quality. If a batch is out of whack in terms of taste or safety, the manufacturer can find and destroy any remaining products from that batch. Lot numbers can be used to find out where contamination comes from between the manufacturer and the customer. If only a tiny amount of a batch is contaminated, the contamination happens somewhere else.
If many batches or the whole batch is contaminated, the producer will need to look into where the ingredients come from. To make sure food or drink is safe for you to eat or drink, you can look at the date code on the package. It must be done after the aluminum cans are filled with gas. In addition, this printing will be done in a food or beverage factory, which is a much more difficult place to do it.
It is possible that printing on aluminum cans could have problems, like not being able to write on them.
Sterilization is done in the canning process by using a lot of heat and pressure. This is done for a lot of different food and drink items. Ink may not stick to the container if there is still some heat.
People who drink acidic drinks like beer, wine, or juice may not need to use heat to kill germs because the acid in the drink stops them from growing. Cold-bottled items can be used to keep or improve the taste of these foodstuffs. The temperature can change how aluminum behaves and how well printer ink sticks to it.
In a lot of canning operations, moisture is a standard part. Before they are filled, most cans are cleaned with steam. During a sudden temperature change, condensation can form on the surface of a container's lid. If the ink is also changed, it could cause smearing or other incoherent codes to be printed on the can.