Abstract

There is provided a building block assembly including a block body formed of EVA; and an adhesive layer adhered to the block body and formed of hydrophobic material having a higher viscosity. The adhesive layer comprises 20 wt %-50 wt % of rubber mixture and 50 wt %-80 wt % of high polymer resin mixed together. The rubber mixture comprises rubber, softening agent and filler. The high polymer resin uses PIB having a heavy molecular weight. There is further provided a building block assembly including a block body formed of soft material; and an adhesive layer adhered to the block body and formed of hydrophobic material having a higher viscosity. The adhesive layer comprises 20 wt %-50 wt % of rubber mixture and 50 wt %-80 wt % of high polymer resin mixed together. The rubber mixture comprises rubber, softening agent and filler. The high polymer resin uses PIB having a heavy molecular weight.

IPC Classes  ?

• A63H 33/14 - Building blocks, strips or similar building parts specially adapted to be assembled by adhesive or cement
• C08L 23/22 - Copolymers of isobuteneButyl rubberHomopolymers or copolymers of other iso-olefins