Plastic lunch box logo 5, what does PP stand for?
At the bottom of the triangle sign of plastic products, the product is equivalent to "identity card". The three arrow triangle, meaning "Recyclable re-use". Also in the triangle numbers, such as "1", is a digital sign. There are 1 to 7 numbers of plastic signs, each number represents a kind of plastic material, the main is to facilitate the recovery and understand the conditions of use.
Which marked "5" recycling logo mainly made of the plastic containers of this material is pp. has good air permeability, high temperature resistance and high impact resistance, mechanical properties of strength and toughness, resistance to a variety of organic solvents and acid corrosion. For microwave meal, bottles and other plastic containers with plastic. PP is the only container material production can be put into the microwave oven heating, can be repeatedly used after careful cleaning. But some microwave meal box with 5 PP manufacturing, but the lid is to 1, PE manufacturing, so it can not be put together with the box of microwave oven
PP5 is the identification of material grades that can be used directly in food packaging and in materials directly in contact with food. But you said that you can use repeatedly, this is generally not used repeatedly, because the plastic is thin, easily damaged, and is generally not recommended for hot food, if clean, can be reused. As you said to environmental protection, energy saving, this way, I think you can do garbage treatment, you can, because 90% of the plastic material can be done as long as the classification processing, can be recycled, which will not pollute the environment, but also save resources.
