Flexible bags – Lifting or suspending element
Patent
1997-06-30
1999-03-16
Pascua, Jes F.
Flexible bags
Lifting or suspending element
383 35, 383120, 383211, 383906, 229212, 229248, B65D 3306, B65D 3338
Patent
active
058821171
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates in general to the field of packaging, and more particularly to a carrier bag comprising two main panels connected together by two sides, one of the sides including at least one bellows, the bag having a top edge defining an opening that is designed to be closed after the bag has been filled by sticking together the two superposed main panels close to and along the entire length of the top edge.
BACKGROUND OF THE INVENTION
A particularly advantageous application of the invention lies in the packaging granular foods such as pet food pellets.
In order to close presently-known bags, the superposed panels of the bags are sewn together along their top edges.
The main drawback of such bags is that they are rather difficult to open.
To open them, it is necessary first to pull on a rip cord with which the panels are sewn together, and then to grasp one of the panels to separate it from the other.
It is difficult to pull the cord out of the stitching, and doing so takes a certain amount of time.
Moreover, once the cord has been removed, it is not easy to grasp one of the two panels at the superposed edges.
To make that known type of bag easier to open, a notch has been provided in the top edge of one of the two panels, making it easier to take hold of said panel and separate it from the other.
However, the notch does not make it possible to avoid the operation of pulling out the cord with which the panels are sewn together, and this remains a major difficulty in opening the bag.
Document EP 580 989 discloses packaging in the form of bag having a reinforced bottom, in particular for packaging liquid, which bag has a tab projecting from its sealed top edge, the tab extending across the entire width of a bellows and serving to locate a cutting-out zone for opening the bellows. Such a bag can only be opened by being cut and that requires a cutting tool to be used.
Finally, document U.S. 27838 discloses packaging having an opening notch that enables a package to be opened by tearing it.
SUMMARY OF THE INVENTION
To mitigate the drawbacks of the prior art, the present invention proposes a novel carrier bag which is easy to open without damaging the bag.
More particularly, the carrier bag of the invention comprises two main panels connected together by two sides, one of said sides including at least one bellows, the bag having a top edge defining an opening that is designed to be closed, after the bag has been filled, by sticking together the two superposed main panels close to and along the entire length of said top edge.
The bag includes at least one pull-open tab for opening said bellows and integrally formed with said bellows to project out from said top edge of the bag, said pull-open tab being positioned astride a fold line of the bellows and being restricted to the folding zone of said bellows.
Thus, in accordance with the invention, the pull-open tab serves to open the bellows without acting on the main panels of the bag. The bag is thus opened cleanly without being damaged. The tab is advantageously formed during a cutting-out operation that already forms a step in the manufacture of the bag, so no additional manufacturing step is required.
The following description which is given with reference to the accompanying drawing by way of non-limiting example makes it easy to understand what the invention consists in and how it can be implemented
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagrammatic perspective view of a bag of the invention in the closed state, shown partially cutaway at the bottom.
FIG. 2 shows the FIG. 1 bag in the open state.
FIG. 3 shows how a tube of paper is cut out for the purpose of making a carrier bag as shown in FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In FIG. 1, there can be seen a carrier bag 10 comprising two main panels 11, 12 that are connected together by two sides. Each of the sides includes a gusset or bellows 13, 14. The carrier bag has a top edge 15 formed by the top edges of the panels 11, 12 and of said
REFERENCES:
patent: 2480500 (1949-08-01), Moore
Pascua Jes F.
Unisabi Specialites Alimentaires pour Animaux
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