Advantages of choosing aluminum foil bags for cooked foods
Plastic bottles will deform when exposed to heat, and it is difficult to restore the original shape in the usual way.
1, plastic bottles will deform when exposed to heat, which is caused by thermal effects. Especially those plastic bottles with thin wall thickness, such as mineral water bottles, are deformed as soon as they are hot. At this point, it is harder to restore.
2, the plastic bottle will deform when exposed to heat, the general method is difficult to restore it to its original shape. However, if the plastic bottle is deformed by heat under certain environmental conditions, it will be restored to its original shape by heat. This condition is: when the temperature is 150–160 ° C, a certain pressure is applied, and with the help of a specific mold, it will be restored to its original shape by heat.
3. Use a shaped object like a wooden block to hold the plastic part into the shape you want, then put it in the oven for 80 or 90 degrees for 2 hours and it will become your shape, or hot. The torch can be blown.
4. The melting point of this plastic is relatively low, and the temperature of boiling water is enough to soften it and shrink into a mass. There is no way to recover. If you really want to recover, you have to use a mold.
5, the main component of the plastic bottle is synthetic resin, it is a synthetic polymer material, in the case of high temperature, the original structure between the molecules is destroyed, melted, so it becomes awkward. The thermal expansion and contraction is a change in the molecular spacing when the molecules are not destroyed. Change the volume without changing the essence. So there is no possibility of getting bigger.