Diseño metodológico para reducir el desperdicio controlando las variables de aplicación del adhesivo

Abstract

This project aims to mitigate controllable waste from corrugated cardboard production, addressing the bonding deficiency between papers caused by low gelatinization kinetics at high production speeds. It’s justified by the necessity of reducing waste KPI’s and optimizing raw material performance through the precise control of chemical variables. Methodology involves starch, sodium hydroxide, borax, and ketonic resin as raw materials. Analytical techniques included Differential Scanning Calorimetry (DSC), the Stein – Hall method, and mechanical compression testing. Thermal characterization was performed to determine enthalpy and gel point, while flute B and C sheets were evaluated for basis weight, moisture content, and mechanical strength (ECT, FCT, PAT) according to standardized laboratory protocols. Results point that the V3 formula reached its gel point at 60.5ºC, enabling fast activation of the adhesive and ensuring effective formation of the green bond at the liners interface. V3 exhibited the highest bond integrity between sheets of the three formulas. DSC analysis showed that V2 reached a recrystallization T of 82,3°C, which showed a higher degree of crystallinity. V3 implementation reduced delamination waste by 5 tons, equals to 0,15% of total paper consumption, saving $11 165. Keywords: Starch, DSC, Corrugated Cardboard, Temperature