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The importance of material selection - PP healthy and environmentally friendly
- Dec 11, 2017 -

PC and PP, which one is more suitable for making cups.

PC is polycarbonate

One of the most common plastics, this material itself is non-toxic, especially for the manufacture of bottles, space cup, etc., because of the controversial bisphenol A. PC main performance defects is hydrolysis stability is not high enough, sensitive to the gap, organic chemical resistance, scratch resistance is poor, long-term exposure to ultraviolet light will be yellow. Like other resins, PC is prone to turbidity in certain organic solvents.

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PP is the abbreviation of polypropylene (Polypropylene, referred to as PP)

PP is a semi-crystalline thermoplastics. Has a high impact resistance, tough mechanical properties, resistance to a variety of organic solvents and acid-base corrosion. In the industry has a wide range of applications, is one of the common polymer materials. It has good heat resistance, products can be sterilized at temperatures above 100 ℃, without external conditions, 150 ℃ nor deformation, is one of the most common plastics for microwave ovens.

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Compared with the two materials, PP material is generally used when making disposable cups. From a safety point of view, the processing temperature of PP plastic reaches 180-240 ° C, so boiling water will not decompose it, so the PP ratio PC more secure.