Aluminum-plastic composite tape is a type of tape used for cable shielding and insulation. It is made up of multiple layers of materials, typically consisting of a layer of aluminum foil, a layer of plastic film, and an adhesive layer. The aluminum foil provides electrical conductivity and shielding, while the plastic film provides insulation and protection against moisture and other environmental factors. The adhesive layer serves to bond the tape to the cable. Aluminum-plastic composite tape is commonly used in the manufacturing of high-voltage power cables, telecommunications cables, and other types of electrical cables.