The invention relates to the field of preparation of wood pulp packaging paper, and discloses degradable wood pulp packaging paper and a production process thereof, and the production process comprises the following steps: S1, mixing wood pulp fibers and water-soluble fibers, and performing
papermaking molding to obtain wet paper sheets; s2, the wet
paper sheet is subjected to partitioned
drying, and water-soluble fibers are subjected to in-situ
dissolution in the
drying process; s3, the front face of the wood pulp
fiber base material is sequentially coated with the bottom-layer functional
emulsion and the surface-layer functional
emulsion, and a composite wet film is formed; s4, performing staged
drying on the composite wet film, so that the bottom-layer functional
emulsion and the surface-layer functional emulsion are subjected to a cross-linking reaction, and a gradient functional
barrier layer is formed; s5,
coating the surface of the gradient functional
barrier layer with an anti-
fouling coating and curing the anti-
fouling coating; and S6, the back face of the wood pulp
fiber base material is coated with a heat-seal coating and cured. By adding the water-soluble fibers and cooperating with the design of the gradient functional
barrier layer, the puncture strength of the material is improved, and the problem that the
viscosity and functionality of the coating are difficult to balance is solved.