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12/08/05 - USPTO Class 229 |  29 views | #20050269388 | Prev - Next | About this Page  229 rss/xml feed  monitor keywords

Bag for storing and dispensing granular, powdery or liquid products and production method thereof

USPTO Application #: 20050269388
Title: Bag for storing and dispensing granular, powdery or liquid products and production method thereof
Abstract: The invention relates to a hermetically-sealed bag of the type which is used to transport and dispense granular, powdery or liquid products and which is made from sheet of paper, plastic material or plastic/metal material. The inventive bag is soldered longitudinally and transversely such that it can be incorporated into a cardboard parallelepiped container and is particularly suitable for use in a box comprising a dispensing system, such as a pour spout, which is made form the same piece of cardboard as the box. During the production and filling process, a flexible delivery tube is formed inside the bag at the upper edge thereof by means of two soldered joints or one double-width soldered joint with a central vertical cut, without the need for any additional parts. Said tube is affixed to the pour spout such that the user only has to open the end of the tube which is connected to the pour spout of the box in order to dispense the product. The invention also relates to a method of producing said dispensing tube-equipped bag and the pour spout-equipped box. (end of abstract)



Agent: Wenderoth, Lind & Ponack, L.L.P. - Washington, DC, US
Inventor: Juan Jose Arsuaga Eguizabal
USPTO Applicaton #: 20050269388 - Class: 229117300 (USPTO)

Related Patent Categories: Envelopes, Wrappers, And Paperboard Boxes, Paperboard Box, With Inner Flexible Or Flaccid Bag Liner, Bag Interior Accessible Through Aperture In Box Material

Bag for storing and dispensing granular, powdery or liquid products and production method thereof description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20050269388, Bag for storing and dispensing granular, powdery or liquid products and production method thereof.

Brief Patent Description - Full Patent Description - Patent Application Claims
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FIELD OF THE INVENTION

[0001] The invention described hereby refers to a pouch placed in a carton, for keeping and distributing seed-like, powder-like or liquid goods, and to the manufacturing procedure.

[0002] The carton is a folding carton made preferably from a blank of cardboard, folded along creasing lines and glued on its flaps' gluing areas so forming a prismatic rectangular carton provided with a pour spout. The hermetic pouch made of paper or plastic or plastic/metallic material is placed on the carton before it is folded. To open the carton and pour its contents, it is not necessary to cut the pouch's upper side as access is gained through the pour spout, and it is through the pour spout that the contents are served.

BACKGROUND ART

[0003] Several cartons with rectangular prismatic form, hermetic closure and water-proof interior for distributing seed-like, powder-like or liquid goods are already present on the market. In order to improve conservation of the products these are usually enclosed in hermetic pouches made of paper or plastic or plastic/metallic material. Then the carton's main role is to protect the pouch, to make it easier to handle thanks to the carton's rigidity and to offer its faces with a surface suitable for illustrating with the product's name, brand, features, attractive pictures, etc. A sole pouch does not have these advantages, but it makes for better conservation of the contents as it offers an acceptable hermetic condition even after the first time it has been opened, if the consumer folds it carefully and fixes it with a clip.

[0004] Thus, seed-like and powder-like goods are usually marketed in pouches contained in cartons like those described above. However, the main disadvantage,--if one does not consider the difficulty of manufacturing them and filling them--, is for the consumer: The first time, he must open the carton top, and open or cut the pouch. Then, after serving he must close the pouch, folding the mouth carefully and fixing the closure for good conservation.

[0005] Other recipients are made of cardboard-plastic-metal laminated complexes and have a sealed or glued spout made of a different material, that helps to pour the content, and which can be closed again with a plug or something similar. This kind of cartons are currently used only for liquids.

[0006] However, cartons which contain pouches with a pouring system consisting of a pour spout built in the carton and in the pouch, easy to open and use and easy to close without any special operations and without any clips or suchlike are unknown on the market. A further advantage would be that it can be used for both seed-like and powder-like goods, but also for liquids. It would also be convenient for it to be manufactured with just a blank and a pouch without gluing or sealing any pre-formed parts such as spouts or plugs.

[0007] The invention described in this memoir refers to a pouch, including the option of the "pouch without a bottom", that is, when the bottom of the pouch is only sealed within the filling machine immediately before the pouch is filled, to form a prismatic rectangular carton with the above mentioned advantages.

[0008] Though this pouch could be adapted to any carton similar to the existing ones, it is especially suitable for being placed in a carton with a distributing system such as a pour spout, made from the same blank the carton is made from. Precisely, the preferred embodiment described later for the pouch and its manufacturing procedure is that which is suitable for its production with a carton provided with a pour spout as described in patent application PCT ES/0000200190, "PROCEDIMIENTO DE FABRICACION Y CAJA PERFECCIONADA CON PICO VERTEDOR".

[0009] This application describes a manufacturing process and a folding carton made from a blank, preferably of cardboard, folded along some creasing lines and glued on some flap areas, producing a prismatic rectangular box or carton provided with a pour spout. The innovation of this invention is founded on the fact that the pour spout is constructed in the blank's waste area next to an upper short flap, instead of adding a supplementary side to obtain it, and that the constructing process may be carried out in high speed, automatic, folder-gluer machines.

[0010] The pouch--which is the object of this invention, is constructed in such a way that takes advantage of this spout, using it as a seal before the first opening, as a pour spout, and as a hermetic closing device until the next opening.

[0011] Furthermore, the manufacturing process is described with the pour spout box, being glued to it at some points.

SUMMARY OF THE INVENTION

[0012] The present invention refers to a pouch to be placed inside a prismatic rectangular carton, specially for cartons provided with a distributing system such as a pour spout, made from the same blank that the carton is made from (as described in patent application PCT ES/0000200190 for instance).

[0013] The invention described in that application is a manufacturing procedure and a box provided with a pour spout, consisting in a way to produce a folding carton made from a blank, preferably of cardboard, folded along some creasing lines, and glued on some gluing areas, thus creating a prismatic rectangular carton provided with a pour spout. This carton offers some advantages if we compare it to other cartons used to transport and distribute goods.

[0014] Some cartons have no system for distributing their contents.

[0015] Some have a closing and pouring system consisting of a spout made either from the same cardboard that the carton is made from, or of a plastic or metallic material which is glued to the carton during the manufacturing process.

[0016] But no carton is known to be provided with a pouring system constructed from a blank with all the advantages derived from its being easily transported, stored and erected for filling, as the one described in the aforementioned PCT application, which describes the pour spout box and the system applied to manufacture it from a single cardboard blank.

[0017] The current advantages offered by this carton are improved now by adding a hermetic pouch made of either paper, or plastic or plastic-metallic material (for instance the ones used for breakfast cereals) to the inside. The innovative aspect of this pouch is that, instead of opening the upper side of the carton to reach the hermetic pouch, access to the pouch is gained through the pour spout, and the pouch is not loose inside the carton, but is stuck to it at a series of glue points.

[0018] This pouch could also be placed inside a carton without a pour spout, with just a window without side-walls for example, or inside a carton provided with a pouring system made by adding an inserted part, but there would be fewer advantages. Most pour spouts--those constructed on supplementary sides--are obtained when the blank is folded, whereas the one described here is already formed while the blank is still flat. That is the reason why the pouch can be glued to the carton described in the aforementioned PCT, while in other cases this would not be possible.

[0019] To produce this pouch, when the cardboard blank is placed on the folder-gluer machine, after the pour spout constructing operations have been performed and before the longitudinal creasing lines are folded, we glue some areas and we stick the folded pouch obtained from a folded pouch roll on them. At this stage we obtain a folded carton containing a folded pouch, which, thanks to the gluing points, accompanies the carton's movements, so that when the carton is erected and obtains its rectangular prismatic shape the pouch inside will also take on approximately the same shape.

[0020] After filling the pouch with its contents, besides the upper horizontal sealing line, a double welding line must be sealed, which can be straight, wavy or V-shaped, the shape does not matter, and at least one vertical or inclined cut must be made, with the purpose of getting one of the pouch's upper corners,--precisely the one that has been stuck to the carton's pour spout--, to move independently of the pouch. The double sealing and the cut, whatever their shapes might be, will form a pour pipe glued to the carton's pour spout. Finally, the closing of the carton is completed.

[0021] Thus, when the end user opens the carton he finds a flexible sealed pour pipe (which he will have to cut) which overreaches the carton's pour spout's border. If he cuts it in such a way that the pipe's border still overreaches the border of the carton's spout, when the latter is closed back, it will trap the flexible pipe and so it will provide the remaining contents with an acceptable hermetic condition, even after the first opening and without any need for clips or suchlike.

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Full patent description for Bag for storing and dispensing granular, powdery or liquid products and production method thereof

Brief Patent Description - Full Patent Description - Patent Application Claims

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