Method and machine for making filter bags for infusion or extraction products, and filter bag obtained thereby

摘要

A method for making filter bags (1) for infusion or extraction products includes a step of feeding at least one continuous strip (S) of filter material along an advancement direction (A); a step of dosing doses (2) of infusion or extraction product on to the strip (S) of filter material in advancement; a step of forming the filter bags (1); and a step of depositing on to the strip (S) of filter material one or more continuous fibers (4) including one or more flavoring substances. A machine for carrying out the method comprises a feeding station (6) for feeding the continuous strip (S); a dosing station (7); a forming station (31) for forming the filter bags (1); and a deposition station (8) for depositing one or more continuous fibers (4) including one or more flavoring substances onto the continuous strip (S) of filter material.