Characteristics Of The Cup

The cup is loved by many people because of its changeable shape, bright colors, and the characteristics of not being afraid of beating. It is very suitable for outdoor users and office workers. Generally speaking, the bottom of the plastic cup has a logo, which is the number on the small triangle. The common one is "05", which means that the material of the cup is PP (polypropylene). The cup made of PP has good heat resistance, the melting point is between 170℃ and 172℃, and its chemical properties are relatively stable. 

It is stable to various chemical reagents except being corroded by concentrated sulfuric acid and concentrated nitric acid. But the problem of ordinary plastic cups is very common. Plastic is a polymer chemical material. When a cup of hot water or boiling water is used in a plastic cup, the polymer will easily precipitate and dissolve into the water, which is harmful to human health after drinking. Moreover, the internal microstructure of the plastic has many pores, in which dirt is hidden, and bacteria will grow if it is not cleaned. Therefore, the selection of plastic cups is very important for the selection of plastic materials. Food grade plastics that meet national standards must be selected. That is PP material.