SHOP511 HDPE Printed Gorcery Bag HDPE plastic bags are more brittle, thinner, and less stretchable, but the good tensile strength of hdpe plastic bags can be used to make plastic bags that are stronger and more durable than ldpe plastic. hdpe plastic bags are mostly used for food packaging in large and small supermarkets and chain stores. Compared with other materials, it is low in price and high in quality. Compared with paper Product Description HDPE (High Density Polyethylene) has very little polymer chain branching. Because it is denser, it is harder and less permeable than LDPE. Its density is 0.941-0.965 g/cm3. HDPE bags have better tensile strength, but not as flexible as LDPE bags. HDPE plastic bags are more brittle, thinner, and less stretchable, but the good tensile strength of hdpe plastic bags can be used to make plastic bags that are stronger and more durable than ldpe plastic. Hdpe Plastic Bags are mostly used for food packaging in large and small supermarkets and chain stores. Compared with other materials, it is low in price and high in quality. Compared with paper bags, hdpe plastic bags are more environmentally friendly and lower in cost.