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How does the High-frequency plastic heat-sealing machine work?

2019-04-01下載文件：暫時沒有下載文件
?The tube oscillation can generate a high-frequency electromagnetic field. Under the high-frequency electromagnetic field between he upper and lower electrodes, the dielectric material (plastic) can show its internal molecular polarization following the electric field direction. When the high frequency electric field changes its direction in high speeds, the dielectric material can generate heat due to its internal molecular strenuous vibration and then weld under the pressure from the moulds.
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