A process for producing a cured polymeric product by additive manufacturing, comprising: providing an additive manufacturing device comprising a source of actinic radiation, a tank capable of containing a binder, and a support structure; forming rubber particles into a first rubber layer upon the support structure, wherein the rubber particles comprise at least one conjugated diene-monomer containing polymer and reinforcing filler comprising carbon black, silica, or a combination thereof, and wherein the rubber particles have an average particle size of about 10 microns to about 1000 microns; applying liquid binder to the first rubber layer to form a first bound layer, wherein the liquid binder comprises a curable polymeric mixture; sequentially forming additional rubber layers upon the first bound layer and applying liquid binder to at least some of the additional rubber layers to form additional bound layers; and effecting curing by applying actinic radiation, heat, or a combination thereof to one or more of the bound layers, thereby producing a cured polymeric product, wherein the cured polymeric product is a tire component or an air spring, wherein the at least one conjugated diene-monomer containing polymer of the rubber particles is selected from at least one of natural rubber, polyisoprene, styrenebutadiene rubber, polybutadiene rubber, styrene-isoprene rubber, butadiene-isoprene-rubber, styrene-isoprene-butadiene rubber, or farnasene co-polymers of the foregoing, and wherein the cured polymeric product has an elongation at break (Eb) of 100% to 600% as measured by ASTM D-412. providing an additive manufacturing device comprising a source of actinic radiation, a tank capable of containing a binder, and a support structure; forming rubber particles into a first rubber layer upon the support structure, wherein the rubber particles comprise at least one conjugated diene-monomer containing polymer and reinforcing filler comprising carbon black, silica, or a combination thereof, and wherein the rubber particles have an average particle size of about 10 microns to about 1000 microns; applying liquid binder to the first rubber layer to form a first bound layer, wherein the liquid binder comprises a curable polymeric mixture; sequentially forming additional rubber layers upon the first bound layer and applying liquid binder to at least some of the additional rubber layers to form additional bound layers; and effecting curing by applying actinic radiation, heat, or a combination thereof to one or more of the bound layers, thereby producing a cured polymeric product, wherein the cured polymeric product is a tire component or an air spring, wherein the at least one conjugated diene-monomer containing polymer of the rubber particles is selected from at least one of natural rubber, polyisoprene, styrenebutadiene rubber, polybutadiene rubber, styrene-isoprene rubber, butadiene-isoprene-rubber, styrene-isoprene-butadiene rubber, or farnasene co-polymers of the foregoing, and wherein the cured polymeric product has an elongation at break (Eb) of 100% to 600% as measured by ASTM D-412. wherein the cured polymeric product is a tire component or an air spring, wherein the at least one conjugated diene-monomer containing polymer of the rubber particles is selected from at least one of natural rubber, polyisoprene, styrenebutadiene rubber, polybutadiene rubber, styrene-isoprene rubber, butadiene-isoprene-rubber, styrene-isoprene-butadiene rubber, or farnasene co-polymers of the foregoing, and wherein the cured polymeric product has an elongation at break (Eb) of 100% to 600% as measured by ASTM D-412.