In today's society, most of the food packaging bags displayed on the counter are serrated. The purpose is to facilitate consumers to open the bag and open the bag more conveniently, but have you ever thought about it, why do you make a serrated effect instead of a flat effect? Here is why the bag should be made into a serrated mouth.
This problem involves the use of mechanics. When an object is stressed, the force will be changed according to the shape of the object itself, and mutation will usually occur at folds or sharp corners. So the packaging bag factory-
The packaging makes the edge of the bag serrated, retaining the serrated effect, allowing consumers to easily and conveniently open the bag.
The above is the reason why the food packaging bag should be made into a sawtooth, and the benefits.