This invention discloses an antistatic round-bottom
plastic bag, its preparation method, and its application, belonging to the field of plastic product technology. The
plastic bag includes a bag body and a round bottom. The round bottom has a downward-bent shaping fold that is connected to the bag body by a ring-shaped heat seal. The bag body and round bottom are made of antistatic PE film. This film uses LDPE, HDPE, and mPE ternary blend resin as the base material, and adds
polyethylene glycol and PEBA ionic composite antistatic
masterbatch, antioxidants, and nano-silica composite additives. The finished product is obtained through ultrasonic pretreatment, twin-screw segmented temperature-controlled
granulation, biaxial stretching blown film, shaping folding, and heat sealing. This invention, using the above-mentioned antistatic round-bottom
plastic bag, its preparation method, and its application, solves the problems of traditional antistatic bags, such as inability to stand upright, poor antistatic effect in low
humidity environments, insufficient durability, and sealing leakage. The resulting plastic bag has stable and durable antistatic performance, excellent self-standing and sealing properties, high transparency, and strong tensile and
aging resistance.