Plastic bag also called "poly bag", which is made from polyethylene (HDPE: high-density polyethylene, LDPE: low-density polyethylene, MDPE: medium-density polyethylene) is popular everywhere as an economic & useful carrier product. Moreover, Plastic Bag Making Machine also developed fast. After over a half of century of development, now it has a various range of designs to please users' requirement: t-shirt handle, block head, die cut, patch, flexi-loop, clip loop, rigid handle, duffer, bag on roll... The production technique for each bag is different but there is a simplified description about plastic bag making process with 4 steps: material blending, extruding, printing, finishing.
