An Environmentally-Friendly And Safer Method To Defiber Wet Strength Broke Using Customized Enzymatic Treatments
EDT develops enzymatic treatments that help mills improve in areas of quality, throughput, and cost. Developmental work targeted improving the processing of wet strength-containing broke, a major struggle of our industry. These issues are seen across many paper grades, however the tissue industry’s large towel production and converting losses create significant quantities of this broke. Traditional treatments for these resins have been expensive, potentially harmful to workers, and have produced inadequate results. Combined with safety issues are the often problematic issues which can arise downstream for chemistries on the machine. EDT has developed a new enzymatic program, Repulpase, which acts on the fiber/resin matrices, improving defiberization beyond current methods. These enzymatic treatments are customized based on the fiber, wet strength resin, age of broke, and the mill’s desired degree of defiberization. Many benefits arise from the use of these enzymatic treatments, including reduced re-pulping times, yield improvement, and removal of safety concerns from current treatments such as caustic, hypochlorite or other oxidizing chemistries that also increase downstream conductivity. This paper will discuss the impact this new technology has on the industry and how it helps mills make more, higher quality, lower cost, and safer tons.