Cov khoom siv hauv cov khob kas fes yas

Cov khoom siv rau lub khob kas fes yas muaj xws li polystyrene (PS), polypropylene (PP), thiab polyethylene (PE). Polystyrene (PS) muaj cov pob tshab siab (lub teeb xa hluav taws xob ntau dua lossis sib npaug li 90%), tab sis tsis zoo cua sov (<60℃) and is brittle. Polypropylene (PP) has high mechanical strength (tensile strength 30-40MPa) and high temperature resistance (120℃), but lower transparency. Polyethylene (PE) is highly corrosion-resistant and inexpensive, but lacks rigidity (flexural modulus approximately 200-300MPa). PP material, because it meets food contact safety standards (FDA certification), is more suitable for holding hot drinks. It is recommended to choose based on the usage scenario: PS is suitable for displaying cold drinks, PP is suitable for taking hot coffee to go, and PE is suitable for low-cost short-term use.