A flat and round heat transfer machine is a type of device that is used to imprint designs, logos, or other graphics on a wide variety of round-shaped objects, including milk bottles. The machine typically consists of a flat heating plate that is heated to a high temperature, and a curved silicone pad that conforms to the shape of the bottle.

To use the machine, the operator places the bottle on the heating plate and positions the design in the desired location on the curved silicone pad. The operator then presses down on the heating plate, which transfers the design onto the bottle. The heat and pressure cause the ink to bond to the surface of the bottle, resulting in a permanent and durable imprint.

This type of machine is commonly used in the printing and manufacturing industries for labeling, branding, and customization purposes. It offers a cost-effective and efficient way to produce large numbers of high-quality imprints on round objects such as milk bottles.