There are plastic bags that are specified for toys to a certain size and must be punched. Prevent children from slipping into the head and suffocating while playing.
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 a hanging hole.
It has nothing to do with the specification, mainly because of its use.
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TianYang Precision Mold company mainly produce pneumatic hole punch machine, it is a small part on the bag making machine, and punch different holes on thin packing material, like LDPE, HDPE, PE, OPP, PET or non-woven material, paper material and We are manufacturer of is less than 1000micron. We are manufacturer of hole puncher over 10years, we offer professional technology support according to customer's requirement. We offer reasonable price and best service for our customer.