A blow molder machine is a type of manufacturing equipment used to produce hollow plastic parts or containers through a process called blow molding. Blow molding is a process of manufacturing plastic products by forming a molten tube of plastic called a parison inside a mold cavity. The mold is then closed and air is blown into the parison, causing it to expand and conform to the shape of the mold.

The blow molder machine typically consists of three main parts: the extruder, the mold, and the blow station. The extruder melts and forms the plastic material into a tube shape, the mold defines the shape and size of the final product, and the blow station provides the air pressure necessary to inflate the parison and conform it to the shape of the mold.

Blow molder machines are used to produce a wide range of plastic products such as bottles, containers, tanks, and other hollow shapes. They are commonly used in industries such as packaging, automotive, consumer goods, and medical devices.