Abstract: A practice golf putter includes a body formed to hit a golf ball, the body having a concave portion, which is formed on the front of the body and is open at the front and on the top thereof. The concave portion includes inclined surfaces formed on the left and right sides thereof; and a protrusion formed at a lower end portion of a point at which the inclined surfaces meet, and protruding toward the front. Therefore, the golf putter has the following effects. Since a striking point can be known through the advancing trajectory of the golf ball when the golf ball is struck by a practice golf putter, the location of the practice golf putter can be changed as needed, thereby enabling correct swing stances to be mastered. Therefore, putting can be more quickly learned than when using a conventional technology.

Abstract: A method for manufacturing an antibacterial resin according to the present invention includes the following steps. The method includes: a preparation step of preparing synthetic resin powder and an antibacterial additive; a dispersion step of introducing into a mixer the synthetic resin powder together with iron balls having a pointed protrusion formed on an outer surface thereof and dispersing particles; a dispersion and mixing step of introducing the antibacterial additive into the mixer containing the synthetic resin powder, followed by dispersion and mixing; a pellet forming step of separating the iron balls and forming the mixture of the synthetic resin powder and the antibacterial additive into pellets by melting, extrusion and cutting; and a product producing step of introducing the pellets into an injection molding machine to produce an antibacterial resin product; wherein white charcoal powder is included in the antibacterial additive in the mixing step.