In paper and cardboard applications for coupling in the converting industry, our flame treaters prepare the surfaces of materials in the best possible way before it is coupled with extruded PE, thus eliminating all surface impurities (fuzz, etc). It is also possible to check for the proper amount of moisture in the paper, thus preventing excessive drying of the material, which can generate dangerous surface breakage of the paper.
A further advantage in the use of flame treatment for paper, even before coupling with PE, is that of being able to considerably reduce the temperature of the extruded PE and its specific quantity. If the treatment is applied AFTER the process of coupling with extruded PE, the flame polarises the surface layer of PE and renders the surface ready to be re-coupled with any other successive layers or alternative materials.
In the case of aluminium foil, flame treatment allows to degrease and/or clean the surface from pollutants that can contaminate the surface after the production process.