The invention relates to a device for producing a manually tearable textile adhesive tape. The device has a supply unit for longitudinal and/or transverse threads and a treatment device. In the treatment device, the threads supplied by the supply unit are treated with a processing liquid that attacks the fibers of the particular thread until the tear strength of the thread is reduced by approximately 5% to 60%. The device also has a weaving unit, in which the treated threads and/or untreated threads are woven with each other in order to form a carrier tape. A final coating unit serves to coat the carrier tape with a glue at least on one side.