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Differences between PP bag and OPP bag

[PP] The so-called PP bag is a plastic bag made of polypropylene. It usually uses color printing and offset printing technology, with bright color. Generally, it is made into woven bags. In addition, PP bags are tensile polypropylene plastics, which belong to thermoplastic plastics. It is non-toxic, tasteless, smooth and transparent. It is easy to burn. The flame is molten and dripping, yellow on the top and blue on the bottom. There is less smoke after leaving the fire and it continues to burn. It is mainly used for packaging in cosmetics, food, toys, clothing, stationery, electronics, hardware and other industries. The color is transparent, the quality is excellent, and the toughness is good. Because of its hard and brittle material, it is only suitable for packaging and not suitable for bearing.
[OPP] OPP is a directionally stretched polypropylene film, which is characterized by high transparency and brittleness. The edge is sealed on the side after the single OPP is folded in half and a self-adhesive seal is stuck on the opening tongue. When using the product, the protective skin on the surface of the seal is torn off and the tongue is folded in half and then firmly stuck. It is convenient to use, beautiful and generous. It is widely used in clothing, food, printing, stationery, cosmetics, paper and other industries. We can also print all kinds of patterns, butterfly holes and airplane holes according to customers' needs.
[Difference] OPP film has higher tensile strength, stiffness, transparency, glossiness, printing performance, etc. than ordinary PP film. Naturally, the price should be higher. The price varies with different specifications. The sealing property of OPP film is more than twice that of traditional film, which makes its products more moisturizing, fresh-keeping and longer storage time.