| 摘要 |
Apparatus for loading and forming envelopes includes a supply structure for a web of plastic envelope blanks, web control means including a web feeding and locating mechanism and a web tensioning mechanism which cooperate to intermittently feed the web along a path of travel, a loading station at which the blank envelopes are loaded, and a forming station at which loaded blank envelopes are simultaneously sealed and cut to size. The web control means feeds a part of each blank envelope to a predetermined location on the path of travel. The feed of the web is then terminated with blank envelopes registered at the loading and forming stations. Loading and forming apparatus operates in timed relation with the web control structure to perform the loading and forming operations when the web is stopped.
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