Water Barrier Paper

Water barrier paper is an environmentally friendly packaging material produced by applying multi-layer water-based polymer coatings onto virgin plant fiber paper, replacing traditional PE extrusion lamination, plastic lamination, and aluminum foil lamination processes. The product uses no extrusion coating, no plastic film lamination, and contains no aluminum foil. The coating forms a dense high-barrier layer on the paper surface, providing integrated high oxygen barrier, high moisture barrier, high grease resistance, and liquid and gas barrier properties. The coating is water-based and contains no plastic interlayers. Most grades can be processed through standard paper recycling systems or industrial composting. This makes water barrier paper a sustainable alternative to plastic laminates, aluminum foil paper, and coated paper.

The core difference between it and traditional coated paper lies in the barrier mechanism. PE-coated paper relies on a plastic film layer for water and grease resistance, but paper-plastic separation makes recycling difficult. Water barrier paper uses water-based coating to achieve barrier functions. After disposal, the coating disperses during repulping, allowing paper fibers to be recycled normally without special sorting. Barrier performance can be customized. High-moisture-barrier grades effectively block moisture vapor transmission, preventing contents from becoming damp. High-oxygen-barrier grades slow grease oxidation and food spoilage, extending shelf life. High-grease-resistant grades achieve high Kit-level grease resistance, blocking cooking oil and sauce penetration. Selected grades support heat-sealing and are compatible with automatic packaging equipment. The weight range covers 45 to 200 grams. Supply forms include rolls, sheets, and pre-cut pieces in white and natural brown colors.