In our daily life, we all use fresh-keeping boxes. I believe many people think that fresh-keeping products are mostly made of PE plastic. In fact, PP plastic can also be used to make fresh-keeping boxes. So is the PP fresh-keeping box poisonous? Let's follow the editor of Sino-Singapore Huamei Modified Plastics to take a look!
Both PP plastic and PE plastic are highly hygienic plastics that can be safely used. PP has food-grade plastics that meet national standards, so food packaging can be competent.
We all know that PE plastic is a plastic with strong cold resistance. It can be used normally at a temperature of minus 60 degrees Celsius. What about the cold resistance of PP plastic?
PP plastic is a kind of light weight plastic. It is mostly used in the home appliance and automobile industries and used in food packaging products mainly because of its strong hygiene. The maximum cold resistance temperature of PP is -35 degrees Celsius, and the temperature is lower than- At 35 degrees Celsius, PP plastic products will become brittle. The maximum refrigeration temperature of the refrigerator is -24 degrees Celsius, and the temperature of the fresh-keeping layer is between 3-10 degrees Celsius, so PP plastic can be used as a fresh-keeping box. Plastic PP is used for preservation and another important reason is that it is excellent in heat resistance and can continue to be used at a temperature of 100 degrees Celsius.