People always have concerns about plastic food packaging bags, and some people think that plastics are not safe. Especially when plastic packaging bags of liquid foods, people's concerns will be even greater, then the plastic packaging bags of liquid food will be safe?
In general, plastic bags specially used for food are not toxic because they are made of polyethylene or nylon. The high-pressure polyethylene film looks and feels like a thin layer of paraffin. It is also a coincidence that the composition of polyethylene is indeed very similar to that of paraffin, except that the molecular weight of polyethylene is much larger than that of paraffin, and the nylon film is stronger than polyethylene film. But the cost is higher, so the application is not so common.
The plastic polyethylene, polypropylene, polyester, polystyrene, etc. currently used for packaging foods are qualified for hygienic performance and are safe for food packaging.
