Extruder for preparing adhesive tape

The invention discloses an extruder for preparing an adhesive tape. The extruder comprises a vertically-arranged shell and a multi-section type rotating body detachably and rotatably arranged in the shell in a sleeved mode. The multi-section rotating body comprises a hollow long shaft, and a heating function section, a material mixing section and a material uniformizing and discharging section which are detachably arranged on the hollow long shaft in a sleeving manner in sequence from the rear end to the front end; a feeding cylinder is communicated with the heating functional section; the heating functional section comprises a heating screw sleeve arranged on the hollow long shaft in a sleeving manner; an electric heating wire is embedded in the heating screw sleeve, and molten materials can be pushed to the front end of the heating screw sleeve; the mixing section comprises at least two base sleeves which are fixedly arranged on the hollow long shaft in a sleeving manner; a plurality of through cavities whi