Yankee dryer profiler and control

A method for creping paper, the method comprising:

• applying an adhesive composition to an outer surface of a creping cylinder to form an adhesive coating on the creping cylinder, the adhesive composition comprising an adhesive polymer and water;
• contacting a continuous paper sheet with the adhesive coating on the creping cylinder;
• removing the continuous paper sheet and at least a portion of the adhesive coating from the outer surface of the creping cylinder;
• determining a quality of the adhesive coating on the creping cylinder, wherein determining the quality of the adhesive coating comprises:
• measuring at least one of a degree of cross-linking of the adhesive polymer, a concentration of the adhesive polymer in the adhesive coating, a water content of the adhesive coating, an ash content of the adhesive coating, or combinations thereof;
• and
• determining a thickness of the adhesive coating by:
• directing a beam of light through the adhesive coating at an angle, wherein at least a portion of the beam reflects from the surface of the creping cylinder and passes back through the adhesive coating;
• measuring an initial intensity of the beam;
• measuring a final intensity of the at least a portion of the beam reflected and passed back through the adhesive coating;
• determining an absorbance of the beam of light by the adhesive coating from a difference between the initial intensity and the final intensity of the beam;
• and
• calculating the thickness of the adhesive coating from the absorbance of the beam by the adhesive coating.