For the recycling process of waste paper containers, except for an additional cleaning procedure being introducted, the pulping efficiency is worse than uncoated papers because of the existence of laminated plasics on the surface of paper containers. The higher manufacturing cost and low economic value of regenerated products limit the development of recycling business of paper container. In addition, the residues of polymer films in pulps also has impact on paper manufacturing. If the easily repulped barrier coating is developed to replace the polymer laminated film, the processing costs and difficulty will be reduced. The first aim of this resreach is to connetct with domestic companies and construct the material and supply chains information. Except for post consumer wastes, the amount of post industial wastes exceeds 10000 ton/year, of which quality and cleaningness is much superior. The derived nano cellulose coatings, preparing via modulation of defibrillation process and surface polarity, showed superior barrier capability. In addition, through the matching of formulation and roll-to-roll precision coating process, the nano-cellulose coated papers were fabricated, of which the repulping yield being 85%. The developed cellulose coatings also passed the preliminary dissolution tests of food containers, indicative of the feasibility for packaging applications.

Paper container, Nano cellulose, Coating