发明授权
US3789746A Packaging machine 失效
包装机

Packaging machine
摘要:
A packaging machine in which packages are erected on mandrels of a rotating wheel and the crease lines of the bottom elements of the packages are successively creased, heated, folded and sealed; the heating being carried out by a heated gas which is directed by deflector means against the thermoplastic lining of the package and into the corners of the erected package.
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