| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for favorably connecting a hollow needle, which is designed for industrial applications, with a filter assembly. SOLUTION: This liquid feeding path comprises a first member (hollow needle 2) and a second member (filter assembly 3). In this case, a first tubular flow passage 23, in which a liquid flows, penetrates through the first member (hollow needle 2). A second tubular flow passage 33, in which the liquid flows, penetrates through the second member (filter assembly 3), and at the same time, the second member is bonded to the first member so that the first tubular flow passage and the second tubular flow passage constitutes one flow passage. Then, the first member and the second member are bonded by a bonding layer 6 which surrounds the periphery of the boundary section between the first tubular flow passage and the second tubular flow passage. The bonding layer consists of an adhesive layer and a welding layer formed in such a manner that the first member and the second member are welded by ultrasonic welding. COPYRIGHT: (C)2008,JPO&INPIT |
