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The vest bag, also known as the vest bag, is a type of common plastic bag, which is named after its shape resembles a vest. The vest bag is simple to make and has a wide range of uses. It has become an indispensable necessities in daily life and provides great convenience for people.
The vest bag is made of high-density polyethylene (HDPE) and has a hard material. High Density Polyethylene (HDPE) is a high-crystallinity, non-polar thermoplastic resin. The original HDPE has a milky white appearance and a semi-transparent shape in a thin section. PE has excellent resistance to most living and industrial chemicals. Certain types of chemicals can cause chemical corrosion, such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene), and halogenated hydrocarbons (carbon tetrachloride). The polymer is non-hygroscopic and has good water vapor resistance and can be used for packaging purposes. HDPE has excellent electrical properties, especially high dielectric strength, making it suitable for wire and cable. Medium to high molecular weight grades have excellent impact resistance, both at ambient temperatures and even at low temperatures of -40F.