Ziplock bag material is heated does not produce harmful substances

Ziplock bag with a high-pressure polyethylene and polyvinyl chloride, which can be referred to as the two types of plastic products, high-pressure polyethylene does not have a very complex process in the production ziplock bag when there is no production of other additives, plastics after heating will to produce a decomposition of organic gas itself is harmless, simple heating does not produce harmful substances, but in modified or recycled polyethylene, it will generate an unknown toxic substance. Of course, although heating alone is harmless, but it's best not to put food and ziplock together, and heat, because heating or gas is produced, and if the food together, no one says no will produce chemical the reaction, after all, is a plastic product. Of course no problem freezer, low temperature sterilization.

When you use the self-styled band, vandalism of ziplock bag will make it a problem, such as seal damage, defects, deformation, heat and so on. Let's use the ziplock safe