| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve strength, heat resistance and welding strength of a welding molding by vibration welding a plurality of moldings molded from polyamide resin composition obtained by mixing specific amount of glass fiber with polyimide resin made of specific amount of homopolyamide resin and copolyamide resin. SOLUTION: This molding is obtained by mixing 10 to 100 pts.wt. of glass fiber with 100 pts.wt. of polyamide resin containing 95 to 50 wt.% of homopolyamide resin and 5 to 50 wt.% of copolyamide resin. First, a plurality of components are molded, for example, by using the composition by an injection molding process. The plurality of the molded moldings are connected by vibration welding to obtain a polyamide resin vibration welded molding. A frequency of the vibration in the welding is 100 to 300 Hz, its amplitude is 0.5 to 2.0 mm, or preferably 0.8 to 1.6 mm. The welding pressure is 5 to 100 kg/cm<2> or preferably 10 to 60 kg/cm<2> .</p> |
