In daily life, people often use ziplock bags to package some odds and ends, as well as some food. Ziplock bags have been integrated into people's life and production. The most common thing is when buying a mobile phone, the accessories of the mobile phone are all packaged in ziplock bags. , and some foods sold in supermarkets, such as tea, wolfberry, melon seeds, etc., will the ziplock bag produce harmful substances under high temperature after heating? The following is a detailed analysis for you.
First of all, we must understand the material of the ziplock bag. The material of the ziplock bag includes PE (polyethylene), PP (polypropylene), PO (polyolefin), PVC (polyvinyl chloride) and other materials. The most commonly used materials are PE and PVC. These materials are also graded. Medical and food-grade materials are safe and non-toxic. The process of making ziplock bags from PE materials is simple, and no other processing aids are added. The melting point of PE material Above 380°C, no harmful substances will be produced under normal heating conditions, but if the heating time is too long, the above-mentioned materials will not produce harmful substances as long as they reach food grade.
However, if it is a ziplock bag produced from recycled materials or unknown materials, it may chemically react at high temperatures to produce harmful substances. Therefore, I would like to remind everyone that if you don't know the material of the ziplock bag, you should not bring the ziplock bag to heat. When heating food, the temperature must not be too high, and the time is too long, otherwise the ziplock bag will have problems such as deformation and damage to the seal, resulting in damage to the ziplock bag and cannot be used.
