PRODUCTION OF TWIST-RETURNING MATERIAL FOR FISHING LINE AND PRODUCTION OF TWIST RETURNER FOR FISHING LINE

摘要

PURPOSE:To produce the subject twist-returning material having uniform component in high yield a large amount within a short time under saving labor by mixing a base material comprising metallic powder and a viscous joining material, subjecting to injection molding, pressing in a mold and calcining. CONSTITUTION:Metallic powder such as stainless steel or nickel preferably having 0.1-10mum granular diameter is mixed with an oil and fat-based viscous liquid joining material, and a first revolving ring 4 having a boss part 6 and a ring part 7 and a second revolving 5 having a base part 9 and a ring part 10 are molded by an injection molding machine. Resultant rings are respectively presses in molds and calcined preferably at 800-1200 deg.C, then a joint shaft 12 of the second revolving ring 5 is inserted into an open hole 8 of the first revolving ring 4 and the two rings are joined by nipping the open hole with a nipping tool to afford the objecting twist-returning material.