FR2811966A1 - Bag for packaging heavy products in granule or powder form is made from multi-layer plastic with carrying handle and side opening - Google Patents

Abstract

The bag (1) has two walls (2) sealed by a weld (4) close to the top and with holes (6) to form a carrying handle (7). It has a panel with a sliding clasp fastener or similar, e.g. Velcro (RTM), giving access when opened to one side wall of the bag that can be cut with a knife or scissors to allow the product to be poured, and allowing the bag to be re-sealed.

Description

The present invention relates to a packaging bag, particularly

  intended for the packaging of relatively heavy products,

  in granular or powder form.

  The bag according to the invention finds a particularly advantageous application for the packaging of animal feed products, of the kibble or pasta type, of food products sold in semi-wholesale, for example coffee, of garden products such as potting soil, fertilizer or seeds, construction products such as cement or

lime, or whatever.

  The packaging of relatively heavy products in granular or pulverulent form is currently carried out by means of paper bags comprising handles at their upper ends, forming two carrying handles. These handles are made up of paper strips

  reinforced and are reported on the walls of the bag.

  The upper part of such bags is closed by gluing or by

seams.

  These bags have the significant drawback of not being very easy to open and of having to be more or less torn to allow their opening, which makes the flow of products relatively imprecise and

may lead to spills.

  These bags also have the disadvantage of not being very practical to handle when it comes to overturning them in order to produce the flow of the product which they contain, and the shape of the openings of these bags is not always good. suitable for flow

controlled product.

  The existing paper bags also have the drawbacks of having a poor seal, which poses problems of odors at the point of sale for certain products, in particular animal food products of the kibble type, or exchange problems. fluidics in general through the walls of the bag the time necessary for the sale of the products, consisting in particular of the capture of moisture by the

  product or the drying of that product.

  The walls of these bags may also not be perfectly assembled at the folds making it possible to form the bottom or the upper part of the bags, and it sometimes happens that openings remain at the level of these folds, which allow entry into insect bags such as

cockroaches.

  The present invention aims to remedy all of these

significant disadvantages.

  Its main objectives are to provide a bag having an easy and quick opening to make, to significantly improve the handling of the bag at the time of its overturning for the flow of the

  product, and to ensure perfect control of this flow.

  The invention also aims to provide a bag allowing safe transport of the product contained, particularly when it is a relatively heavy product, and having a perfect seal

  especially with regard to odors and humidity.

  An additional objective is to provide a bag having, compared to bags according to the prior art, an improved visual appearance, in particular having a reduced tendency to wrinkle and having an appearance

shiny and smooth.

  According to the invention, the bag comprises - two walls joined to each other at their upper parts, along a junction line; a handle fitted at the level of these upper parts, in the middle zone of said junction line, and - closing means including elongated elements which can be assembled or disassembled, these elements being fixed on one of said walls along said junction line and close to

it.

  The opening of the bag is carried out by disassembling said elongated elements so as to uncover the portion of the wall of the bag lying between these elements, then by cutting this wall portion parallel to said elongated elements, using a sharp tool

  such as a scissor, cutter or knife.

  A traction exerted on the handle in order to lift the bag causes the central zone of said junction line to be raised relative to the extreme zones thereof, which tends to bring these two extreme zones closer to one another, and this approximation tends to impart a concave curvature to the upper part of the bag on the side on which said elongated elements are located. This curvature gives a concave shape to the upper elongated element and correspondingly a convex shape to the lower elongated element as well as to the wall part located in

below it.

  This simple lifting thus tends to form a product discharge chute. The manipulation of the bag with a view to reversing for the flow of the product is particularly simple to perform since it is sufficient, after said cutting has been carried out, to grasp said handle with one hand to lift the bag, to grasp the bottom bag with each other

  hand and raise the bottom until the product slides into the chute.

  There are no attachments on the internal face of the wall of the bag at the level of the flow opening, capable of forming an obstacle to the flow of the product, and the arranged opening extends over a large part. from the bag. The flow of the product is thus particularly

easy to make.

  Once this flow achieved, the elongated elements can be assembled so as to close the bag in order to ensure a seal

  sufficient of it the time of consumption of the product.

  Preferably, said closure means are constituted by a slide fastener, said elongated elements being constituted by

the slides of this closure.

  The relative rigidity of such slides favors the aforementioned concave and convex deformations, and consequently makes the

bag operation.

  Advantageously, the walls of the bag joined to each other extend above said junction line so as to form a strip with double walls, and this strip comprises openings

  allowing to arrange said handle.

  This handle is thus produced in a simple, easy and inexpensive manner, and is particularly solid, which ensures total security.

  as for the resistance of this handle during transport of the bag.

  One or more pieces of material can, if necessary, be attached to one and / or the other of said walls of the strip in order to reinforce these walls at the level of the openings making it possible to arrange said

handle.

  Preferably, the walls of the bag are made of synthetic material

can be welded.

  This weldability makes it possible to obtain a perfect seal, which eliminates the problems of diffusion of odors as well as the fluidic exchanges between the interior and the exterior of the bag, or of penetration of insects.

inside the bag.

  In addition, the use of such a material makes it possible to obtain a bag having an improved visual appearance, resulting in particular from a tendency

  reduced to wrinkling and a shiny and smooth appearance.

  This material is preferably formed by the assembly by bonding of two layers of a complex comprising a layer of

  polyethylene, a layer of polypropylene and a layer of polyethylene.

  This material, which thus comprises a layer of polyethylene, a layer of polypropylene, a layer of polyethylene, a layer of glue then again a layer of polyethylene, a layer of polypropylene and a layer of polyethylene, appears to be present, by its structure, a perfect seal with regard to the fluid transfers between the inside and the outside of the bag The problems of diffusion of odors and capture of humidity or drying of the product during the exposure of the bags to the sale

are thus eliminated.

  For its proper understanding, the invention is again described below with reference to the appended schematic drawing representing, by way of nonlimiting example, a preferred embodiment of the bag

packaging it relates to.

  Figure 1 is a perspective view Figure 2 is a partial view, on an enlarged scale, in section along line 11-11 of Figure 1; Figure 3 is a view similar to Figure 2, during opening, and Figure 4 is a view similar to Figure 1 after opening, in the shape it takes when lifted by pulling on a

  carrying handle which it includes at its upper part.

  The figures represent a packaging bag 1, particularly intended for the packaging of a relatively heavy product, in granular or pulverulent form, such as kibbles for animal feed. The bag 1 has two main walls 2 and two walls

  side 3 of smaller dimensions.

  These walls 2, 3 are made of a material formed by the assembly by bonding of two layers of a complex comprising a layer of

  polyethylene, a layer of polypropylene and a layer of polyethylene.

  This material, thanks to its polyethylene outer layers, can be heat sealed. The main walls 2 are joined to each other at their upper parts, by heat sealing, along a junction line 4, and each wall 3 is connected by heat sealing to the adjacent wall 2, the

  along joining lines that extend line 4.

  The walls 2, 3 extend above line 4 so

  forming a strip 5 with double walls in the middle part of the bag 1.

  The walls 2 include two openings 6 arranged in the middle zone of the strip 5, making it possible to arrange a handle 7 of

  carrying and handling the bag 1.

  Two pieces of material can be added to the internal face of the walls 2 at the level of these openings 6, in order to reinforce these

walls at the level of these openings.

  The bag 1 also comprises a zipper 10 fixed to one of the walls 2, along the line 4, below and close to it. As shown in FIG. 2, this closure 10 is put in place, in particular by gluing, while no cut has been made.

  fitted in the wall 2 which receives it.

  In practice, the product contained in the bag 1 is offered for sale with the bag as shown in Figures 1 and 2. The handle 7 has perfect strength, allowing reliable carrying of the bag 1 even when the product contained in it bag is relatively heavy, as is the case with kibbles for animal feed. The weldability of the material constituting the bag 1 makes it possible to ensure a perfect seal against the latter with regard to odors and, in general, with regard to all fluidic exchanges, which thus eliminates any risk of

  moisture uptake by the product or desiccation thereof.

  The opening of the bag is carried out by moving the slider of the closure 10 in the direction of the separation of the two slides from the latter, so as to uncover the portion of the wall 2 located between the two slides, then by cutting this wall portion 2 parallel to the slides, by means of a cutting tool 11 such as a chisel, a cutter or

  a knife, as shown in Figure 3.

  A traction exerted on the handle 7 in order to lift the bag 1 causes the central zone of the line 4 to be raised relative to the extreme zones of the latter, which tends to bring these two extreme zones closer to one another . It appears in FIG. 4 that this approximation tends to confer a concave curvature on the upper part of the bag 1 as well as on the upper slide of the closure 10, on the side on which this closure is located 10. This same approximation gives correlatively a convex curvature to the lower slide of the closure 10 as well as to the part 2a of the wall 2 situated below this

lower slide.

  This lifting thus makes it possible to form a chute 12

product flow.

  The manipulation of the bag 1 with a view to reversing for the flow of the product is particularly simple to carry out since it suffices, after the said cutting has been carried out, to grasp the said handle 7 with one hand to lift the bag, to grasp the bottom of the bag with the other hand and lift this bottom until the product slides in the chute 12. Once this flow achieved, the zipper 10 allows to close the bag 1 to ensure a sufficient seal of it

  the time of consumption of the product.

  As appears from the foregoing, the invention provides a packaging bag having an easy and quick opening, an improved possibility of manipulation at the time of the spill in view of the flow of the product, ensuring perfect control. of this flow, a safe transport, and a perfect seal especially with regard to odors and

moisture.

  It goes without saying that the invention is not limited to the embodiment described above by way of example, but on the contrary embraces all of the variant embodiments thereof. Thus, the bag can be of the type with welded bellows edges, as shown in the figures, or can be of the square bottom or bottom bellows type, or can also be devoid of bellows; the zipper 10 can be replaced by any equivalent closure means including elongated elements, 5 in particular by complementary Velcro strips of the type

  "VELCRO" or interlocking strips.

Claims (5)

  1 - Packaging bag (1), particularly intended for packaging relatively heavy products, in granular or pulverulent form, characterized in that it comprises: - two walls (2) joined to one another at level of their upper parts, along a junction line (4); - A handle (7) arranged at the level of these upper parts, in the middle zone of said junction line (4), and closing means (10) including elongated elements which can be assembled or disassembled, these elements being fixed on one of said walls (2) along said junction line (4) and close to it of it.   2 - packaging bag according to claim 1, characterized in that said closure means are constituted by a zipper (10), said elongated elements being constituted by the slides of this closure.   3 - packaging bag according to claim 1 or claim 2, characterized in that its walls (2) joined to each other extend above said junction line (4) so as to form a double-walled strip (5), and in that this strip (5) comprises openings (6)   allowing to arrange said handle (7).   4- packaging bag according to claim 3, characterized in that one or more pieces of material are attached to one and / or the other of said walls of the strip (5) in order to reinforce these walls at the level   openings (6) allowing said handle (7) to be arranged.   - Packaging bag according to one of claims 1 to 4,   characterized in that its walls (2) are made of synthetic material which can to be welded.   6 - packaging bag according to claim 5, characterized in that said synthetic material is formed by the assembly by bonding of two layers of a complex comprising a layer of polyethylene, a   layer of polypropylene and layer of polyethylene.