What are the differences between different types of plastic bags?

Plastic bags can be differentiated based on their material composition and intended use. High-density polyethylene (HDPE) bags are strong and commonly used for grocery shopping. Low-density polyethylene (LDPE) bags are flexible and often used for produce and trash. Polypropylene (PP) bags are resistant to moisture and chemicals, making them suitable for medical and food packaging. Polyvinyl chloride (PVC) bags are durable and used for heavy-duty applications. Biodegradable bags, made from materials like PLA or starch blends, break down more easily in the environment but may still take years to decompose. The environmental impact varies, with biodegradable bags being more eco-friendly, but all plastic bags contribute to pollution and should be used responsibly.