Flexible bags – With closure – Closure within bag
Patent
1989-05-11
1990-06-12
Marcus, Stephen
Flexible bags
With closure
Closure within bag
383 5, 383 40, B65D 3314
Patent
active
049327917
ABSTRACT:
A closure seal and method for envelopes having front and back panels joined along bottom and side edges and in which a release liner strip delimits overlying marginal edges along the top of the panels. The liner strip initially covers a pressure sensitive adhesive band in the top marginal edge of one of the panels and extends through the side edge junctures of the panels to enable removal of the liner strip and securement of the top margins by the pressure sensitive adhesive band. Registered lines of perforations are formed across the top portion of both panels below the bottom edge of the release liner strip to define a tear line for opening the envelope after it has been sealed in embodiments not intended for liquid contents. The lines of perforations are omitted in a liquid containing envelope embodiment wherein the adhesive band joins with fused side edges of the envelope.
REFERENCES:
patent: 2483604 (1949-10-01), Abramson
patent: 2597305 (1952-05-01), Doyle
patent: 2819010 (1958-01-01), Amiguet
patent: 2991001 (1961-07-01), Hughes
patent: 3456867 (1969-07-01), Repko
patent: 3625414 (1971-12-01), Caiola
patent: 3669254 (1972-06-01), Chrysanthis
patent: 3680768 (1972-08-01), Warren
patent: 3979051 (1976-09-01), Close
patent: 4709396 (1987-11-01), Voshall et al.
patent: 4709397 (1987-11-01), Voshall et al.
patent: 4744673 (1988-05-01), Nakamura
patent: 4744674 (1988-05-01), Nocek
patent: 4759643 (1988-07-01), Canno
Marcus Stephen
Stucker Nova
Uniflex, Inc.
Ziems Robert F.
LandOfFree
Envelope closure seal and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Envelope closure seal and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Envelope closure seal and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-613535