Hydroxy ethyl acrylate (HEA), acrylic acid (AA), and butyl acrylate (BA) were utilised as monomers in a reaction to produce a water-based polyacrylate emulsion. This emulsion was then employed to create an emulsion pressure-sensitive adhesive using semi-continuous seed emulsion polymerization. The shading resistance of the emulsion pressure-sensitive adhesive was enhanced through the utilisation of a crosslinking agent or by subjecting it to vacuum treatment. The properties of polyacrylate emulsion and emulsion pressure-sensitive adhesive were investigated by analysing the characterization of FTIR, TEM, TGA, particle size, and viscosity. The effects of the amount of initiator (ammonium persulfate), stirring speed, reaction temperature, and holding time on these properties were examined. An investigation was conducted to examine the impact of the kind and quantity of an additional crosslinking agent (expressed as a percentage of the mass of polyacrylate emulsion) and the duration of vacuum treatment on the properties of emulsion pressure-sensitive adhesive. The findings indicated that the characteristics of polyacrylate emulsion (PSA-1 emulsion) and emulsion pressure-sensitive adhesive PSA-1 were enhanced when created with an initiator dosage of 0.4%, stirring speed ranging from 700 to 800 r/min, reaction temperature of 85 ℃, and holding period of 2 hours. The emulsion pressure-sensitive adhesive exhibited improved shadow resistance when the dosage of aziridine was increased to 1.0% and 1.5%. The emulsion pressure-sensitive adhesive PSA-1-60, which is produced by subjecting the PSA-1 emulsion to vacuum treatment for a duration of 60 minutes, exhibits exceptional bonding characteristics and resistance to shadowing. The initial adhesion of the material is 25#, while the peel strength is 1.85 N/cm at 180°. Additionally, there are no visible shadows on the surface of the test mirror plate.