The invention discloses a method for building inner and outer wall decorating plate, which comprises two flows, each flow including steps of: a primer line
processing flow: (1) thickness sanding and dedusting, (2) roller painting back seal coat and curing into a first UV seal coat layer, (3) roller painting UV penetrant twice, (4) leveling by
infrared ray, (5)
coating UV
putty at the front and
UV curing and generating a UV
putty layer, (6) roller painting the UV seal coat for three times and respectively curing and generating three second UV seal coat
layers, (7) fine sanding; and a roller painting
finish line flow: (1) dedusting, (2) roller painting UV glue and generating a first UV glue layer, (3)
coating the UV finish for five times and curing and generating five UV finish
layers. The decorating plate can solve the problems that a
UV curing penetrating agent is strongly, quickly and deeply penetrated into a
fiber reinforced
calcium silicate slab or a
fiber cement slab, deeply cured to form a film and subjected to stereo chemical netlike cross-linking reaction with UV
putty and UV sealing paint, and thoroughly solves the problem of
adhesive force between the decorative
surface layer and a substrate.