Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1981-05-01
1983-11-08
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493224, 493919, B31B 182
Patent
active
044139845
ABSTRACT:
A method and apparatus for manufacturing window envelopes is provided. After an opening has been cut in an envelope blank and glue applied around the opening, a window patch is secured over the opening and a panel secured behind the window patch. The panel serves as the rear panel of a pocket portion formed behind the window. When the envelope blank is folded and glued into its intended form, it will include both a relatively large compartment and a relatively small pocket. The window patch and pocket panel are cut from webs traveling at unequal speeds and transferred to an envelope blank through the use of cylinders having suction means therein. The patch and panel are carried by a first cylinder which rotates them to a position where they are adjacent a second cylinder. At this point, suction within the first cylinder is terminated so that the suction means within the second cylinder will draw the patch and panel thereto. The second cylinder rotates about its axis and applies the patch and panel to an envelope blank.
REFERENCES:
patent: 2703043 (1955-03-01), Novick et al.
patent: 3412655 (1968-11-01), Kranz
patent: 3435739 (1969-04-01), Neunkirchen
patent: 3868894 (1975-03-01), Watson
patent: 3957570 (1976-05-01), Helm
patent: 4012268 (1977-03-01), Johnsen
Coan James F.
New York Envelope Corp.
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