| This is the method to permanently weld plastic parts using the friction
energy by ultrasonic vibration; electric energy is converted into vibration
energy and friction heat is instantaneously generated by powerful
vibration by a tool horn for molecular combination of contacted faces
of the materials through melting and adhesion. |
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| All kinds of thermoplastic resins may be welded regardless of the
properties of resins; the contacted faces of parts are rubbed by
high-speed vibration and, when the friction heat generated on the
contacted faces reaches to sufficient level, the parts are welded
by mechanical power. |
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| Lead-free soldering is done with use of the alloys such as Sn/Ag/Cu;
this is more environment-friendly welding method compared to
Sn/Pb soldering methods. |
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| This is the process to combine the parts to produce products; possible
mistakes of workers may be prevented with automated or semi-
automated process design and the defects may be detected in the
stepwise quality inspection; possible effects are basically prevented
in the customer lines. |
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