What is a plastic cup?
Plastic cups are loved by many people because of their changeable shapes, bright colors, and characteristics that they are not afraid of being beaten. They are 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 170℃~172℃, and the chemical properties are relatively stable. In addition to being corroded by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to other chemical reagents.
How to identify high-quality plastic cups?
Look at the packaging. The product packaging should indicate the name and address of the manufacturer, the implementation standard of the product, and the date of production, etc.
Look at the appearance. The shape of the plastic cup should be stiff and should not be deformed. When choosing a plastic cup, you can gently squeeze both sides of the cup with your hands, and you can roughly know the stiffness of the cup. If the color of the plastic cup is too white and looks abnormal, it is best not to buy it.