Patent attributes
A dampening device and method of making are provided, in which the method includes providing a first layer of a sponge rubber. An isocyanate-base prepolymer and a polyol base curing agent are combined to form a curable liquid urethane polymer. The curable liquid urethane polymer is shredded and during shredding air in the form of micro-bubbles is entrained in the curable liquid urethane polymer. The curable liquid urethane polymer is applied to form a second layer overlying the first layer and is then cured to form a tacky polyurethane cast elastomer. Micro-bubbles remain present in the tacky polyurethane cast elastomer and curing bonds the first and second layer forming a dampening device. The dampening device includes a first layer of neoprene and a second layer of a micro-bubble infused tacky polyurethane cast elastomer bonded to the first layer.
