Non-woven fabric adhesive tape is a type of tape used for cable insulation and water blocking. It is designed to provide a barrier against moisture and other contaminants that can affect the performance of a cable. The tape is made from a non-woven fabric material, which is highly absorbent and can help to absorb any moisture that may be present. The adhesive layer on the tape ensures that it stays in place and provides a tight seal around the cable, preventing water or other liquids from seeping in. Non-woven fabric adhesive tape is commonly used in outdoor or underground cable installations, where exposure to moisture is a concern.