Ops heat shrinkable film label experts teach: how to use plastic wrap plastic bags is the safest

Ops heat-shrinkable film label experts teach: how to use plastic bag with cling film is the safest Release time: 2017-11-28 There are two main types of ops heat-shrinkable film label plastic fresh-keeping bags, one is non-toxic, they are made of polyethylene Materials such as polypropylene and melamine can be used to hold food; the other is poisonous, they are made of vinyl chloride, which can only be used for general packaging, such as packaging foods with poisoning Danger.　　How to distinguish these two kinds of plastic bags?　　 (1) Put the plastic bag in the water and press it to the bottom of the water by hand. Wait a while, the one that rises to the surface is the non-toxic plastic bag, and the one that sinks to the bottom is the toxic plastic bag.　　(2) Touch the surface of the plastic bag with your hand, it is smooth and non-toxic. If the color is mixed, sticky and astringent to the touch, it is toxic.　　(3) When shaking the plastic bag with your hands vigorously, it is a non-toxic plastic bag that is very loud, while the one that is dull or has no movement is a toxic plastic bag. (4) Burning: Cut a corner of the plastic bag, put it on the fire, and burn it non-toxic. It will continue to burn after the war, and a yellow flame will appear, and the molten plastic will drop like a candle. It is toxic, not easy to burn, it turns into a green flame after burning, and has a nasty smell.　(5) Smelling smell: abnormal smells such as influential and unpleasant, mostly toxic, or may be excessive plasticizers or other additives, and the quality is poor.　　 The food bags on the market can contain dry, wet, raw and cooked foods, which are safe and non-toxic. The plastic bags used in food factories and candied fruit factories are of course non-toxic. Plastic bags used to pack daily commodities, clothes, footwear, electrical appliances, and hardware parts may be poisonous and not suitable for holding food.　　 Non-toxic plastic bags are generally made of polyethylene, while toxic plastic bags are made of polyvinyl chloride. Due to the unpolymerized vinyl chloride monomer in the polyvinyl chloride resin, this is a compound that is toxic to the human body. Furthermore, in the process of processing PVC resin into plastic bags, some auxiliary materials such as plasticizers, stabilizers, and pigments are also involved. Some auxiliary materials are toxic. These toxic substances are simply The oil or water in food is extracted and eaten with food, which is harmful to human health.　　 PVC resin itself is non-toxic. If when the PVC resin is produced, the free vinyl chloride monomer is reduced to a small amount, and when the product is made, non-toxic auxiliary materials can be used to make non-toxic PVC plastic bags.　　 Polyethylene plastic bags and PVC plastic bags are generally difficult to distinguish clearly. It can be distinguished simply by burning. Polyethylene can burn, the flame is blue, the upper end is yellow, and the smell of white wax is emitted when it burns; PVC is extremely difficult to burn, it is yellow when it is on fire, and the outside is green, and it announces the influence of hydrochloric acid.　　Is there any poison in the use of plastic bags? This is also related to the method of use. Some food bags have trademarks and other flowers printed on the outside. It is unsafe if the food bags are turned over during use and the food is stained with these paints.　　Xiong County Xinshun Plastic Bag Factory! Is a professional manufacturer of plastic bags, plastic packaging bags, OPP color printing packaging bags, composite bags, vest bags, stretch film bags, special-shaped bags, square bottom bags, plastic food packaging bags, high and low pressure cooking bags, flat bags, Tianjin plastic bags , The plastic bag manufacturer and plastic color printing packaging manufacturer! Professional high-pressure film plastic bags, low-pressure film portable plastic bags; cosmetic plastic bags; plastic shopping bags; advertising plastic bags; high and low pressure film blowing, color printing, and bag making; professional processing and production of plastic bags and other products. Packaging bags, vest bags Gift Bag Packaging Bag Food Packaging Bag Wholesale Xiongxian Xinshun Plastic Factory is a professional plastic bag wholesale manufacturer specializing in the production of plastic packaging products, with more than 20 years of industry experience. It is one of the largest and most complete professional plastic bag wholesalers in the industry. Since its establishment, Xiongxian Xinshun Plastic Bags has been guided by scientific management standards and standardized and market-oriented management mechanisms, and gradually established a vibrant corporate culture, creating a broad development space for the company. At present, Xiongxian Xinshun Plastic Factory has an excellent staff team with advanced education and professional training; there are many high-tech management personnel, who are committed to application technology research, introducing, digesting and absorbing domestic and foreign advanced technology, and closely Paying attention to the market and the latest scientific and technological developments at home and abroad have enabled our factory to burst out with unlimited vitality and achieve good economic benefits. Previous: Analysis on the industrial development of PVC heat shrinkable film