| 摘要 |
The present invention relates to a buoyancy means for fishing implements, in which an edge combining unit (10) of a first outer cover (6) and a second outer cover (8) made of an ABS resin material formed in a hemispherical oval is welded by indirect heat of a heating wire (30) formed of an infrared ray nichrome wire to form an outer cover (4), an inner cover (14) in an air ball shape having a buoyancy space unit (16) is located inside the outer cover (4) before combining the first outer cover (6) and the second outer cover (8) to apply buoyancy, an urethane resin is foamed in a gap between the inner cover (14) and the outer cover (4) to prevent an erosion of the buoyancy means for fishing implements (2), when damaging a self-buoyancy function and the outer cover (4), and a intermediate layer (12) which increases adhesion of the inner cover (14) and the outer cover (4) is formed, thereby having excellent durability, oil resistance, heat resistance, and high impact strength even in a lower temperature, and being easily processed and injection-molded. In addition, since the shape of the buoyancy means for fishing implements (2) is formed in an oval shape, resistance of bumping into the buoyancy means for fishing implements (2) is less, thereby preventing the damage to the buoyancy means for fishing implements (2), minimizing a shaking of the buoyancy means for fishing implements (2), reducing stress applied to a reproductive shell of seafood, and cultivating a good quality of seafood. |
