Plant for separating labels, caps and other contaminating materials from containers and bottles made of plastics, in particular bottles made of PET, suitable for being positioned downstream of a rotating drum apparatus for removing said labels from the respective bottles and comprising: - collecting means for receiving products coming from said drum apparatus, conduit means extending along a conveying path and connecting said collecting means to a storing group for said labels, characterized in that along said conduit means there are defined: - a first-stage separating unit, configured for separating from said products a first fraction containing bodies and heaviest materials of said products, and configured for allowing a second fraction of said products containing bottles and/or containers and labels to advance along said conveying path; - a second-stage separating unit configured for separating from said second fraction a third fraction of said products that comprises said bottles and/or containers, and configured for allowing a fourth fraction of said products that mainly contains said labels to advance along said conveying path, and wherein - at one end of said conduit means, located downstream of said conveying path, there is defined an end-stage unit for receiving and accumulating, in said storing group, said fourth fraction containing said labels; - fan means positioned upstream of said first-stage separating unit and configured for generating a first air flow suitable for conveying said second fraction of products to said second-stage separating unit, and - sucking means positioned near said third-stage separating unit and configured for generating a second air flow suitable for taking and conveying to said storing group said fourth fraction containing labels. - collecting means for receiving products coming from said drum apparatus, conduit means extending along a conveying path and connecting said collecting means to a storing group for said labels, characterized in that along said conduit means there are defined: - a first-stage separating unit, configured for separating from said products a first fraction containing bodies and heaviest materials of said products, and configured for allowing a second fraction of said products containing bottles and/or containers and labels to advance along said conveying path; - a second-stage separating unit configured for separating from said second fraction a third fraction of said products that comprises said bottles and/or containers, and configured for allowing a fourth fraction of said products that mainly contains said labels to advance along said conveying path, and wherein - at one end of said conduit means, located downstream of said conveying path, there is defined an end-stage unit for receiving and accumulating, in said storing group, said fourth fraction containing said labels; - fan means positioned upstream of said first-stage separating unit and configured for generating a first air flow suitable for conveying said second fraction of products to said second-stage separating unit, and - sucking means positioned near said third-stage separating unit and configured for generating a second air flow suitable for taking and conveying to said storing group said fourth fraction containing labels.