During World War 2, Nylon was invented and been replaced everything that was once made from #silk—such as silk stockings—as silk imports from Asia experienced significant #shortages and #price#fluctuations.
Nylon 6 and Nylon 66 are both synthetic polymers called #polyamides (PA), a.k.a 【聚酰胺】.
Most Nylons are semi-crystalline and possess good #strength and #durability for demanding applications.
Let's spending more time together with our family at home this year.
Did you buy any biscuits to celebrate CNY, like sambal shrimp rolls, almond cookies, pineapple rolls, etc
Most of the CNY biscuits are actually packed in plastic rigid packaging like #GPPS , #PP , #PET . These are all FDA approved in order to contact with our food and keep the food safe.
But do you know what is the differences between all these plastic material packaging?
General Purpose PolyStyrene #GPPS a.k.a 【通用级聚苯乙烯】. It is one of the most widely used kinds of plastic that has excellent transparency, high stiffness and excellent moldability (injection, extrusion, foam molding, etc.).