Device and method for folding self-sealing envelope flaps

Details Device and method for folding self-sealing envelope flaps Device and method for folding self-sealing envelope flaps

1979-06-12

1981-06-02

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493249, 493261, 493420, 493453, 493920, B31B 156

Patent

active

042709091

ABSTRACT:
A device and method for folding the main and secondary flaps of self-sealing envelopes into the inoperative condition. The envelopes (11) are fed, bottom edge leading, into a roller (20), the front panel of the envelope being in contact with the roller. The bottom edge lifts off the roller and the envelope is arrested and temporarily supported by abutment means (38,40,44) while the main flap (16) of the envelope is held to the roller by suction (22,24) and carried around the roller and thereby folded relative to the front panel of the envelope. In this position of the envelope, the secondary flap (18) slidably engages the surface of the roller and is then arrested by stop means (28) which carry the secondary flap (18) around and fold it relative to the back panel of the envelope.

REFERENCES:
patent: 2019946 (1935-11-01), Winkler et al.
patent: 2163038 (1939-06-01), Heywood
patent: 3793926 (1979-02-01), Honsel
patent: 3897720 (1975-08-01), Hiersteiner

Affiliated with

Also associated with

Rating

Device and method for folding self-sealing envelope flaps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device and method for folding self-sealing envelope flaps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for folding self-sealing envelope flaps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1863239