According to the different degradation types of products, it can be divided into photodegradable, biodegradable, and environmentally degradable. The degradation function reflects the product's ability to be accepted by the environment after use and disposal. If the degradation function is good, the bag will crack, differentiate and degrade by itself under the combined action of light and microorganisms, and eventually become debris.
The inspection items of food packaging composite film bags are mainly divided into the following categories: the appearance should be smooth, free from scratches, scalding, bubbles, oil breaks and wrinkles, and heat sealing is smooth and free of voids. The film must not have cracks, pores and separation of composite layers. There is no pollution such as impurities, foreign matter and oil stains.
The bagged soaking liquid shall not have peculiar smell, peculiar smell, turbidity and discoloration. It needs to be pointed out that in addition to the above-mentioned corresponding hygiene standards for food packaging materials, my country has two laws and regulations: one is the "Management Measures for Plastic Products and Raw Materials for Food".
The Food Sanitation Law has more content than management methods. It is a comprehensive law, while the latter is professional and only refers to plastic products and raw materials. The management scale is limited to all kinds of plastic utensils, containers, production pipes, and transportation that touch food. Packaging materials made of tapes and plastics and the synthetic resins and additives used. The so-called plastic food utensils refer to plastic products such as spoons, spoons, chopsticks, etc. that touch food for a short time but need to be reused.
The so-called container refers to plastic products such as barrels, bottles, basins, cups and so on that contain food. The so-called production pipeline refers to the pipeline through which materials in the food processing process, especially liquid food or beverages flow, and should also include storage and irrigation. The so-called conveyor belt refers to the carrier that transports food raw materials to the processing equipment, and the packaging material refers to single-piece and composite bottles, barrels, trays, film rolls and bags.
