NON-SLIP RAILING MANUFACTURING METHOD AND NON-SLIP RAILING WHICH IS MANUFACTURED

摘要

The present invention relates to a method for manufacturing a non-slip handrail member which is formed by using a polyurethane foam material to form a protrusion on a handrail member, and a non-slip handrail member manufactured by the method. The perforated plate 22 having the long hole 24 is provided. Round and deep welding to form a circular outer pipe 20, the adhesive layer 32 is formed on the surface of the thermoplastic flexible tube 30, and then the wear-resistant particles are sprayed on the adhesive layer 32 to the friction layer ( 34), inserting the flexible tube 30 into the inner side of the outer pipe 20 and adhering both sides, and on the outer peripheral surface of the steel pipe 40 having an outer diameter smaller than the inner diameter of the flexible tube 30 Applying a release agent and inserting the steel pipe 40 into the inside of the flexible tube 30, injecting the polyurethane foam 50 into the space formed between the soft tube 30 and the steel pipe 40 and sealing ( 52) (54) both ends between the soft tube 30 and the steel pipe 40 Closing and heating the outer pipe 20 with the heaters 60 and 61 to impart plasticity to the flexible tube 30 and at the same time supplying hot air into the steel pipe 40 to expand the polyurethane foam material 50. Swelling so that a portion of the flexible tube 30 protrudes outward through the long hole 24, stopping driving of the heaters 60 and 61 and supplying hot air and removing the steel pipe 40; It consists of injecting a filler 70 into the polyurethane foam 50.; Construction, balcony, railing, polyurethane, foaming, hot air, wear-resistant, stairs