The general packaging plastic bag does not need to be perforated, but in order to release the air inside the bag after sealing and avoid the space occupied by the air, the hole is vented. The stomata are usually hit in the bag.
There is also a round hole or a butterfly-shaped hole on the top of the bag, which is used for hanging, called hanging holes.
Punching In order to prevent children from suffocating the bag on the head, there is another important reason.
If the plastic bag is not perforated, there will be air inside. After long-term sea transportation, moisture will be generated inside, which will make the product inside moist and moldy. Or rusting. So be sure to punch holes.
