Supermarket continuous roll bags are made of high-density polyethylene (HDPE), an odorless plastic suitable for food packaging. High-density polyethylene is a non-polar thermoplastic resin with high crystallinity. Key characteristics of HDPE include being safe and odorless, with a melting point around 130°C, high relative density, good heat and cold resistance, and stable chemical properties. It also exhibits high rigidity and toughness, along with good mechanical strength.

Standards for supermarket continuous roll bags include:

(1) Thickness standard: According to regulations, the thickness of these bags must not be less than 0.025 mm. Compared to traditional plastic bags, they are thicker and more durable, and importantly, recyclable.

(2) Printing standard: The printing on these bags is typically minimal, usually featuring warnings, recycling symbols, and the QS (Quality Safety) mark.

(3) Color standard: The bags are produced using full material composition, resulting in white or transparent colors. Additionally, supermarket continuous roll bags are available in three sizes: large, medium, and small.

Article Title: Hand-Tear Continuous Roll Bags URL: https://en.szxylp.com/supermarket-degradable-roll-bags/hand-tear-continuous-roll-bags.html