Abstract: The present invention relates to a method for recycling of old corrugated container (OCC) using flotation and kneading treatment and more particularly, to a method for recycling of OCC, wherein OCC is treated withflotation and kneading, treatment, and thereby removing fines and ink spot in the waste pulp and improving the strength and drainage property. As a result, it can be recycled similar to the expensive virgin unbleached kraft pulp.

Abstract: The present invention relates to a method for recycling of old corrugated container (OCC) using flotation, followed by selective enzymatic treatment to fines portion and by selective refining to long fiber stream, and more particularly, to a method for recycling of OCC, wherein OCC is treated with floatation and enzymatic hydrolysis and those recycled stock is refined, thereby having the following effects:a) The drainage property of base paper of old corrugated container is improved; andb) The strength of the same is enhanced by the refining treatment of the fractionated long fiber only; andc) The cost for disintegration and enzymatic treatment is reduced; and(d) The imported corrugated board and unbleached kraft pulp can be substituted by the Korean old corrugated container (KOCC).