OPP bag

OPP bag

What is an OPP bag and what types are there?
One of the types of items used to package products, especially food and food products, is the OPP bag. This material is actually a type of propylene polymer and is included in the category of plastic materials. The structure and characteristics of this type of nylon are such that it takes care of the health of food and prevents oxygen from entering the package and damaging the product.
OPP bag nylons or cellophanes are used in several common types:
Transparent: OPP transparent nylon, as its name suggests, has a transparent appearance and is more suitable for cases where the product is to be clearly visible inside the package.
** Shellfish:** The only difference that Shellfish OPP nylon has with the previous one is its milky or shell colored base, which may cause slight differences in its application.
BOPP: BOPP compression roll, also called metallized, has a colored aluminum base, just like the chips or puff bags you see in supermarkets.
### What are the advantages of OPP bag?
It was also mentioned in the previous section that the important advantage of these types of envelopes is the protection of food. But apart from this, OPP nylon has another great advantage and that is high printability. So that you can print from 1 to 8 colors with high quality (Full HD) on them. This feature has made the OPP bag more popular to the extent that it can be claimed that about 90% of the packaging envelopes in the food field are of this type.

Propylene OPP bag is produced in the form of a roll or film and is converted into a product packaging envelope by vacuum and sewing machines.

Another common material in the packaging industry is the sack, which is produced in three common types: hemp, plastic, and fabric. Undoubtedly, you have seen these types of sacks in various industries and for packaging various products. But other types of sacks have also been produced that have more unique features, such as being anti-sun, waterproof, etc., such as laminate plastic sacks, which have an additional layer called laminate to protect the product from water, composite sacks, etc.

When it comes to printing on a sack, the type of sack becomes particularly important, and the question arises whether all types of sacks can be printed? The fact is that the quality of printing on different materials will be different. On the other hand, sack printing itself has different types. With this in mind, it is better for business owners to choose the best and most affordable printing for their product packaging, considering the type of compressed roll used, while consulting with a knowledgeable expert in this field.

### What are the types of printing on the sack?
The type of printing on the sack is directly related to the device used for printing. For example, in the case of common sacks used for packing flour and rice, a simple jet printer is usually used to print a brand or date. One of the advantages of