A plastic two-color cup mold is a tool used to manufacture plastic cups with two different colors. The mold is typically made of metal and consists of two parts: a cavity side and a core side. The cavity side is where the plastic is injected and forms the outer surface of the cup, while the core side forms the inner surface.

To create a two-color cup, plastic resin is first injected into the cavity side of the mold to form the outer surface of the cup. The mold is then opened, and the second layer of plastic resin is injected into the core side of the mold to form the inner surface of the cup. The two layers of plastic are then allowed to cool and solidify, after which the mold is opened and the finished cup is removed.

Plastic two-color cups can be used for a variety of applications, including food and beverage packaging, promotional items, and other types of consumer products. They are often used to create cups with a layered or gradient appearance or to create cups with different colors on the inside and outside.