1. Three-side sealed bags
Three-side sealed packaging bags are the most common type of packaging bags. The bags received by customers are sealed on three sides, and the last side is sealed by the customer after loading. This type of bag can have an easy-to-tear opening or a zipper self-sealing opening to meet more personalized needs.
Compared with other bag types, the cost of three-side sealed packaging bags will be lower, thereby controlling production costs and increasing product profits.
2. Middle-sealed bags
Middle-sealed packaging bags are a bag type with obvious characteristics. There will be an obvious extra sealing edge in the middle of the back of the bag, so it is also called a back-sealed bag.
Like three-side sealed bags, middle-sealed bags have the advantage of lower cost, but unlike three-side sealed bags, middle-sealed bags have a wider range of applicability and higher expansibility than three-side sealed bags. They can meet some personalized packaging needs while controlling costs.
3. Center-seal accordion bag
The capacity is increased by folding the left and right sides of the center-seal packaging bag. It is usually supported by a plastic inner tray. The number and size of dumplings inside can be seen. The seal of the packaging bag is usually heat-sealed.
The above are several common bag shapes. In addition, there are many different bag shapes that can be made according to different needs.
