Invention Grant
US09579845B2 Ultrasonic sealing of packages 有权
包装的超声波密封

Ultrasonic sealing of packages
Abstract:
A method and apparatus for sealing films. In one embodiment the sealing device comprises a horn and an anvil. The film has a standard portion and an increased portion. Increased energy is applied to the film in the increased portion compared to the energy applied to the standard portion. Such a method allows for sealing of varying number of layers.
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