发明授权
US3999469A Base folding-in arrangement in a packaging machine 失效
包装机中的底部折叠布置

Base folding-in arrangement in a packaging machine
摘要:
A packaging machine of the invention includes a base folding-in arrangement comprising a first device carrying out a linear reciprocating motion and folding down one of the main base panels, and a second folding-in device which folds down the second main base panel partly overlying the first-named base panel.
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