Abstract: In order to improve the mechanical strength after ageing, particularly in a wet medium, of an insulation product, especially a thermal and/or acoustic insulation product, based on mineral wool provided with a size, a latex is incorporated in the sizing composition which contains especially a phenolic resin. The presence of the latex allows the loss of mechanical performance after ageing to be very considerably reduced. The sizing composition advantageously comprises a latex based on an aqueous dispersion or emulsion of a polymer phase carrying hydrophilic functional groups. Application to the manufacture of insulation products intended to be exposed to atmospheric condensation and/or based on mineral wool of lower hydrolytic resistance.

Abstract: Motorized carts for stepping structures are generally discussed herein with particular discussions on motorized carts for use with step ladders and scaffolding structures having wired or wireless controllers for maneuvering the carts. In accordance with aspects of the present invention, differential motor drive steering is incorporated to drive the cart forward, backward, and rotate. The differential motor drive includes a handheld controller and one or more DC drive motors. Mechanical connectors are incorporated to secure a stepping structure to the cart.