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US07022197B2 Process for bonding several layers of plastic film 失效
粘合多层塑料薄膜的工艺

Process for bonding several layers of plastic film
摘要:
A process for bonding several layers of plastic film, particularly plastic bags, into a block, where it is supposed to be possible to remove the plastic films or plastic bags form the block individually; the plastic films or plastic bags are bonded together in an edge strip by means of ultrasonic welding.
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