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The biodegradable plastic bags used in shopping malls and supermarkets are generally divided into th

Biodegradable plastic vest bag: vest-style shopping bag is a kind of portable shopping bag provided by the supermarket company. Nowadays, vest bags are generally made very thick. Usually, vest bags with a thickness of more than 2.5 filaments can be recycled. eco friendly shopping bag. The vest bag can be printed with supermarket promotional patterns, slogans and contact information, as well as the "vest bag specifications, implementation standards, warnings" and the contact information of the plastic bag manufacturer that must be printed. Packaging bags directly in contact with food must be printed with the QS mark.

Biodegradable film bag: also known as "hand tear bag", is a plastic bag that can be used after being torn one by one. This kind of bag is provided free of charge in the supermarket. Continuous roll bags have many uses in supermarkets, such as the packaging of vegetables, fruits, meat, aquatic products and bulk food. At present, there are two continuous roll bags provided by supermarkets. One is food, which can directly package cooked food, meat and other foods. This continuous roll bag must be printed with the QS logo. The other category is non-food products, which are mainly used for bulk weighing and the weighing of vegetables and fruits. The cost of this continuous roll bag is lower than that of the food type. If the oxalic acid content exceeds 5%, cooked meat cannot be packaged directly.

Degradable handbags: We all know that there are many brands of specialty stores and counters in major supermarkets. These brands generally do not use supermarket plastic t-shirt bags, but custom-made exquisite handbags. This kind of plastic bag has high cost, good quality and relatively complicated production process. Usually the thickness we make is more than 5 filaments, and the printing is based on customer needs, simple and beautiful, multi-color printing. The bag can be dug with four finger holes, or the handle can be welded. This kind of bag is also called a fashion shopping bag, which is a common bag.

Degradable plastics are plastics that are degraded by natural microorganisms such as bacteria, fungi, and algae, and are the main components of degradable plastic bags. The ideal biodegradable plastic is a polymer material with excellent performance, which can be completely decomposed by environmental microorganisms after being discarded, and finally becomes an organic part of the natural carbon cycle. "Paper" is a typical biodegradable material, and "synthetic plastic" is a typical polymer material. Therefore, biodegradable plastics are polymer materials with the properties of "paper" and "synthetic plastic". Biodegradable plastics can be divided into completely biodegradable plastics and destructive biodegradable plastics.

Destructive biodegradable plastics: currently destructive biodegradable plastics mainly include starch modified (or filled) polyethylene PE, polypropylene PP, PVC, polystyrene PS, etc.

Fully biodegradable plastics: Fully biodegradable plastics are mainly made of natural polymers (such as starch, cellulose, cellulose, cellulose, cellulose, cellulose, etc.), chitin) or through microbial fermentation or biodegradable polymerization Synthetic agricultural and sideline products, such as thermoplastic starch plastics, aliphatic polyesters, polylactic acid, starch polyvinyl alcohol, etc.