This presentation provides an introduction to jet dyeing machines. It discusses that jet dyeing machines were created to address drawbacks of earlier dyeing machines like winch, jigger, and beam units. The main advantages of jet dyeing machines are that dyeing time is shorter, production is higher, and they use less water compared to beam dyeing machines. The presentation outlines the key parts of jet dyeing machines and lists the three main types. It then describes the jet dyeing process where fabric is transported through a closed tubular system using a jet of dye liquor.