The present application relates to the technical field of home decoration materials, and discloses a high-barrier antibacterial and
mildew-proof composite decorative plate, which comprises a substrate and a composite decorative layer, wherein the composite decorative layer comprises, from top to bottom, a protective layer, an
inkjet printing decorative layer, a base color
coating layer and a modified non-
woven fabric layer; the lower side of the composite decorative layer is hot-pressed and combined with the surface of the substrate by means of a
formaldehyde-free
adhesive. The preparation process comprises the following steps: S1, preparing a composite non-
woven fabric; S2, immersing the composite non-
woven fabric in a hydrophobic modified
slurry for impregnation treatment; S3,
drying the modified non-woven fabric; S4, preparing a base color
coating layer on the upper surface of the modified non-woven fabric; S5, continuously
inkjet printing on the surface of the base color
coating layer to form an
inkjet printing decorative layer; S6, hot-pressing and combining; S7, low-temperature bonding of a transparent
thermoplastic polyurethane protective layer to prepare the composite decorative plate. The present application has the beneficial effects of low
formaldehyde content, significantly improved water and
moisture resistance,
permeation resistance and long-acting antibacterial and
mildew-proof properties.