Roll bag is now very common in people's lives, in the supermarket is also very common, with the emergence of these plastic bags, and greatly facilitate the people's lives, then the use is to pay attention to product quality, good or bad, There are a lot of relevance to health, today we teach you how to identify good or bad quality bags on roll. 1, how to choose foods can be dressed plastic shopping bags and roll bag? A: Check the product identification, direct contact with food plastic shopping bags must be marked with the words "food." Try to choose color, transparent plastic bags. 2, the use of plastic bags for food What precautions? A: Avoid plastic bags containing hot food, even the food is best not to use plastic bags containing a temperature above 50 ℃ food, dress, preferably not more than 2 hours . 3, how to judge a plastic shopping bag and roll bag is good or bad? A: The good qualities of a transparent plastic bag was smooth surface and resilient, feel lubrication, and the use of recycled materials used shopping bags muddy surface dull, dull, much has pungent odor, and feel tacky; in addition, can also be used for combustion method to identify if there are flammable and taste like the smell of wax in the combustion process, while producing drops like a candle-like substance, it is qualified plastic bag, excluding waste plastics; if not flammable, black smoke during combustion, while producing a pungent odor, it is unqualified plastic bags, indicating that there is waste plastic. Easily degradable plastic bags, recycling rate, resulting in waste of resources and environmental pollution. Qian Feng Plastic Products Factory look forward to your visit and look forward to cooperation. Welcome to contact us. http://www.qianfengsuliao.com/