A baseball/softball comprises a core and a cover, wherein the core is wrapped with a layer of fiber material, and the layer of fiber material is wrapped and glued with the cover. A method of processing baseball/softball comprises wrapping the core with the layer of fiber material, placing the core and the layer of fiber material into a cover material, placing the core, the layer of fiber material outside the core and the layer of cover material outside the layer of fiber material into a mold; molding the layer of cover material into the cover through a vulcanization process, gluing a vulcanization melting layer formed on inner wall of the cover to the layer of fiber material, and finally taking the finished product out of the mold. From the perspectives of smell, touch and visual sense, the product has good simulation effect of baseball/softball and better service effect.

The present disclosure relates to the use of eggshell particles as a polymer thermal stabilizer, preferably as a poly(vinyl chloride) (PVC) thermal stabilizer; also to a flexible material comprising a multi-layered PVC-based material, method of obtaining and uses thereof. An aspect of the present disclosure relates to a material comprising a poly(vinyl chloride), PVC, layer comprising eggshell particles, wherein the eggshell particle size is up to 200 m, an intermediate layer or a plurality of intermediate layers; a support layer selected from the following list: fabric, knitted fabric, nonwoven, foam, or mixtures thereof; wherein the layers are bounded. Preferably a material solution free of azodicarbonamide, for automotive InteriorsEco-friendlier, preferably sustainable artificial leather for automotive upholsteries.

Prepregs, composites and articles comprising expandable graphite materials dispersed in a thermoplastic layer are described. In some instances, a thermoplastic composite article comprises a porous core layer comprising a plurality of reinforcing fibers and a thermoplastic material, and the porous core layer further comprises expandable graphite particles homogeneously dispersed in the porous core layer.