There are some differences in the price of plastic garbage bags made of different materials, and the following is a general overview:
Polyethylene (PE) garbage bags: this is the most common material for garbage bags, and the price varies depending on the specific type, size, thickness and brand. In general, ordinary low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) material household garbage bags, such as the common 45cm × 60cm specifications, 50 packs of prices may be in the 5 - 15 yuan. High-density polyethylene (HDPE) material garbage bags are relatively thicker and stronger, the price will be slightly higher, for example, the same specifications of 50 packs may be in the 8 - 20 yuan. If it is some high-end brands or after special treatment (such as thickening, antibacterial, etc.) of PE garbage bags, the price will be higher.
Polyvinyl Chloride (PVC) garbage bags: Due to environmental protection and other factors, the use of PVC garbage bags is gradually decreasing, and they are relatively rare in the market. Its price is usually slightly lower than ordinary PE garbage bags, because the raw material cost of PVC is relatively low. However, if special plasticizers or special properties (such as high strength and high transparency) are added to PVC garbage bags, the price may be comparable or even higher than ordinary PE garbage bags.
Polypropylene (PP) garbage bags: PP material garbage bags are generally less used alone, often mixed with other materials. Pure PP material garbage bags due to production process and performance characteristics, the price may be slightly higher than ordinary PE garbage bags. For example, some high-temperature resistant PP material medical garbage bags, single price may be in 0.3 - 0.5 yuan, while the ordinary specifications of the mixed PP material garbage bag price and PE garbage bag similar.
Polystyrene (PS) garbage bags: PS material garbage bags are relatively weak, generally thinner and lower cost. Common PS material disposable garbage bags, the price is cheaper, for example, 30cm × 40cm specifications, the price of 100 packages may be about 3 - 8 yuan.
Biodegradable plastic garbage bags: The price of biodegradable plastic garbage bags is generally higher than traditional plastic garbage bags. This is because the production technology of degradable plastics is relatively complex, and the cost of raw materials is also higher. For example, biodegradable garbage bags made of polylactic acid (PLA), poly adipic acid / terephthalic acid butyl ester (PBAT) and other materials, with common specifications such as 40cm x 50cm, may be priced at around $15 - $30 for a pack of 50. Starch-based plastic garbage bags are also priced roughly in this range or even higher, depending on the starch content and other additives used.