| 摘要 |
<p>Sealed synthetic resin containers are spin welded by bringing opposed, generally complimentary horizontal mating surfaces (70, 72) of the lid (32) and bowl (22) into contact under a predetermined axial pressure and rapidly accelerating rotation of the lid (32) relative to the bowl (22) while maintaining substantially the axial pressure to produce melting of the mating surfaces until a desired torque value is attained. Thereafter, the rotation of the lid (32) is immediately decelerated to terminate the rotation and allow the mating surfaces (70, 72) to bond. Generally, the torque is monitored repeatedly during the accelerating rotation until a plateau is reached and the accelerating step is continued for at least 50 milliseconds thereafter.</p> |
