Improving the strength of recycled liner for corrugated packaging by adding virgin fibres: Effect of refrigerated storage on paper properties

The high humidity produced by the ripening of fruit and vegetables during refrigerated storage transport leads to a noticeable loss strength corrugated board packaging. Increasing use recycled fibres in manufacture further reduces box compression strength. Adding virgin furnish composition liner paper could solve this problem. Various proportions unbleached eucalyptus pine were added used for board. Laboratory sheets each fibre blend characterised tensile, bursting compressive change properties moisture content at 6°C relative (90% RH) was also studied. results showed that improved with proportion added. Pine yielded higher increments than tensile burst indices, whereas both similar rate. After 4 h exposure storage, decreased considerably, particular strength, which about 70% compared reference value. percentage lost value standard conditions influenced only time low temperature RH. However, an increase amount enhanced remaining indices.