The invention provides a
recovery unit for a reversible
hot melt adhesive waste material, which comprises a stander, a motor, a fabric guide roller, heating rollers, scrapers and an
adhesive-gathering groove, wherein two heating rollers are correspondingly arranged on the stander, and one heating roller is connected with the motor and is taken as an active heating roller to drive the other
passive heating roller contacted with the active heating roller to rotate; the fabric guide roller is arranged on the stander to guide a
composite substrate waste coiled material to pass through between the two heating rollers; the stander is also provided with three scrapers which are contacted with the surfaces of the two heating rollers and a glue surface of the
composite substrate waste coiled material; and the below of the scrapers is provided with the
adhesive-gathering groove. During work, the two heating rollers heat and melt an reversible
hot melt adhesive on the surface of the
composite substrate waste coiled material; the scrapers scrape away the reversible
hot melt adhesive adhered to the surfaces of the active heating roller, the
passive heating roller and the composite substrate waste coiled material; and the reversible
hot melt adhesive falls into the adhesive-gathering groove. The
recovery unit has a reasonable structure, and can effectively recover the reversible
hot melt adhesive on the surface of the composite substrate waste coiled material, save resources and reduce the cost.