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Interlayer and surface bonding force is the fundamental guarantee for the processing performance and structural integrity of multi-layer paper, composite paper and coated paper. Insufficient paper bonding force is a common technical problem in the production of recycled pulp paper and low-grammage composite paper. Affected by incomplete fiber activation, insufficient interlayer fusion and residual micro gaps inside the paper, finished paper is prone to interlayer delamination, surface coating peeling and edge splitting during folding, embossing, laminating and die-cutting processing. In daily production, many paper mills blindly increase adhesive and sizing agent dosage to improve bonding effect, which easily causes paper surface hardening, poor air permeability, blocked ink absorption and increased production costs, and cannot solve the problem of unstable bonding force under temperature and humidity changes. In high-speed automated processing scenarios, insufficient bonding force will lead to a large number of defective products, seriously reducing production yield and processing efficiency. Shandong Ludao Energy Technology Co., Ltd. launches targeted paper bonding force optimization solutions. By activating fiber surface activity, optimizing interlayer fiber fusion degree, and building stable molecular bonding bridges between fibers and coatings, we comprehensively enhance internal and surface bonding fastness of paper. This technology maintains paper’s flexible hand feel and excellent printing adaptability, avoids delamination, peeling and splitting defects, stabilizes processing quality of composite and coated paper, and effectively reduces enterprise production loss and after-sales quality risks.