Shell of ball sports, the production process of bud sports ball and ball sports improved

摘要

Shell of ball sports, the production process of bud sports ball and ball sports improved.The production process of the buds for sports balls generally comprises the following steps: deposition of a film or a film of a suitable material inside the cavity of a mold for the production of buds; depositing a quantity of suitable polymer on the tablet or F. Movie; closing the mould; - rest to cure.The polymerisation or cooling; extraction of the spear of the cavity of the mold. The step of deposition of the film is preferably through the painting of the sides of the cavity of the mold.Alternatively, the stage of deposition may employ a film of material, preferably polyurethane (PU) or polyvinyl chloride (PVC) or fabric, canvas, plastic polyurethane (TPU) or other films suitable for operation. The polymer to be deposited within the cavity. And on the film or film can be a polyurethane (PU) bi component.Alternatively, the polymer substrate can be hydroxylated polybutadiene liquid rubber (pbLh), liquid or other similar polymers. The shell (1) has a smooth substrate (2) involved in its external surface and its edges with a film or film (3). Preferably, the film is a layer obtained by coating the cavity of the mold.Preferably, the film is of polyurethane (PU) or polyvinyl chloride (PVC). Preferericialmente, the substrate is a bi component polyurethane (PU). Alternatively, the polymer substrate can be hydroxylated polybutadiene liquid rubber (pbLh), liquid or other similar polymers.An option of having tips (1 ') has a substrate (2') equipped with several air chambers (4 '), which may vary in size and distribution. The ball sports obtained with layers of polymeric substrate coated with a film or film results in a better touch, softness and chop.