| abstract |
The present invention is a pressure sensitive adhesive for use on a wallcovering to cover a surface such that the wallcovering is repositionable and removable without damage to the surface. The pressure sensitive adhesive is made by combining a plurality of water based acrylic emulsions and a plurality of hollow glass bubbles having a density and size to be present at the surface of the pressure sensitive adhesive and reduce initial tack to allow movement of the wallcovering on the wall surface. The hollow glass bubbles halve a density within the range of 0.05 to 0.10 g/cc and a size within the range 40 to 177 microns in diameter. Additives can be added to the pressure sensitive adhesive of the present invention such as surfactants, defoamers, thickeners, and tacking resins. The pressure sensitive adhesive is applied to a wallcovering and dried to evaporate the water content. Once the wallcovering is positioned on a surface, the user applies pressure to the wallcovering crushing the hollow glass bubbles, thereby allowing the adhesive to contact the surface and hold the wallcovering in place. |