WO2004024590A1

WO2004024590A1 - Bag for storing and dispensing granular, powdery or liquid products and production method thereof

Info

Publication number: WO2004024590A1
Application number: PCT/ES2003/000454
Authority: WO
Inventors: Juan José ARSUAGA EGUIZABAL
Original assignee: Hartsuaga Uranga, Juan Inazio
Priority date: 2002-09-10
Filing date: 2003-09-08
Publication date: 2004-03-25
Also published as: ES2235567B1; AU2003267450A1; US20050269388A1; EP1559657A1; ZA200501960B; ES2235567A1

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 a 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 from 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.

Description

PACKAGING BAG TO PRESERVE AND DISTRIBUTE GRANULATED, PULVERULENT OR LIQUID PRODUCTS AND PROCEDURE

MANUFACTURING

OBJECT OF THE INVENTION

The present invention relates to a bag to be placed inside a box for preserving and distributing granulated, powdery or liquid products and the process for its manufacture.

The box is a collapsible box, constituted from a die-cut iron, preferably cardboard, folded on certain bending lines and glued in certain areas of junction, giving rise to a parallelepiped shaped box provided with a pouring spout. To this box, before folding it, the hermetic bag object of the invention, of paper or of plastic or plastic-metallic material is placed. To open the case and pour the contents is not done by cutting the airtight bag above, but the access is made through the spout, and through it the product contained in the bag is distributed.

BACKGROUND OF THE INVENTION

Several cases or cardboard containers with a parallelepiped shape are known in the market for the distribution of granulated or powdery products, or airtight sealing liquid and waterproof interior.

To improve the conservation of these products, they are usually contained in airtight bags of paper or plastic or plastic-metallic material. Then the main function of the cardboard box is to protect the bag, facilitate its handling by being the rigid box and present faces with surfaces suitable for being illustrated with the product name, trademarks, features, attractive images, etc. These advantages would not have a single bag, which in turn offers the advantage of facilitating better preservation, offering a fairly good tightness even After opening the first time, if after using it, the consumer closes it by folding his mouth carefully and even securing it with a clamp or similar.

For this reason in the market the products of granulated or powdery type are usually offered in bags contained in a box such as those described above. However, the main drawback, leaving aside the greater or lesser complexity of manufacturing and filling with the product, appears to the user: in the first use you must open the box at the top and open or cut the bag with the product . After serving you must close the bag by folding your mouth carefully and secure the closure to achieve good preservation.

There are other containers, manufactured from laminated cardboard-plastic-metal complexes that have a nozzle welded or glued, usually of a material other than that of the box, which helps in its dispensing, and that once opened can be closed again with a plug or the like Packaging of this type is usually only for liquids.

However, there are no known boxes with bags whose spillage system is by means of a spout formed in the box and bag itself, easy to open and use and easy to close without the need for special operations and to add external security of the closure How can a clamp be? Another advantage would be that it could be used for different granulated or powdery products, even for liquids. It would also be convenient if only the carton of the box and the inner bag were used in its manufacture, without having to glue or weld shaped parts such as nozzle and closure.

The invention contained herein refers to a bag, including the option of "bottomless bag" - bag whose bottom is sealed by the packaging machine just before filling - to be incorporated into cardboard parallelepiped containers, with the above-mentioned advantages . Although it could be adapted to any cardboard box similar to those already known, this bag is especially suitable to be placed inside a box with a distribution system, for example a spout, formed in the same cardboard piece of the box . In particular, the preferred embodiment explained below for the bag and for the manufacturing process is appropriate for be manufactured together with a box with pouring spout such as that described in PCT patent application ES / 0000200190, with the title "Manufacturing procedure and improved box with pouring spout".

This application describes a manufacturing process and a collapsible box, constituted from a die-cut plate, preferably of cardboard, folded on certain folding lines and glued in certain areas of junction, giving rise to a parallelepiped shaped box provided with a verting beak. The novelty of this invention is that the pouring spout is obtained from the waste that originates from an upper side flap, instead of adding additional bonded faces, the entire operation being capable of being performed on high-speed automatic machines.

The bag object of the present invention is shaped so that it takes advantage of this pouring spout, using it as a sealed mouth to be dispensed the product the first time, as a spout and as a means of sealing the closure until the next time be used

In addition, the manufacturing process is described together with the spout box, being attached to the box in a series of glued points.

DESCRIPTION OF THE INVENTION

The present invention relates to a bag to be incorporated into cardboard parallelepiped containers, especially for boxes with distribution system, for example a spout, formed on the same cardboard piece of the box, (for example, as the box described in PCT patent application ES / 0000200190).

The invention described in that application is a manufacturing process and box with spout, consisting of a way to make a folding box, constituted from a die-cut iron, preferably cardboard, folded on certain folding lines and glued in certain areas of union, giving rise to a parallelepiped shaped box provided with a spout. This box has advantages over other packaging for transporting products that also serve as a retailer: There are boxes without any system to sell the product. Other boxes have a closing or pouring system consisting of a piece of the same material of the box, or of plastic or similar material that is added to the box during the manufacture of this, but boxes with a formed pouring system are not known from a single die-cut plate, with the advantages derived from its ease of transport and storage and subsequent conformation of the box to be filled, as described in the PCT application mentioned above. This application describes the box with spout and the system for mounting from a single cardboard plate or similar.

To the advantages of this box is now added to incorporate inside a sealed bag of paper or plastic or plastic-metallic material (for example those of the type of breakfast cereals). The novelty of this bag is that instead of opening the case from above to access the airtight bag, access is made through the spout, and that the bag is not loose, but attached to the case in a series of points glued

This type of bag could also be placed in a box with no spout, for example only with an opening window and without side walls, or in a box with a spill system formed by an added piece, but the advantages would be minor. Most of the spikes peaks.- those generated from supplementary lateral faces-, are formed when the box is folded, while that of the invention is already formed when it is still a flat cut, so it has the advantage that with In the case described in the PCT application mentioned, a bag can be glued inside the spout, which in other cases is impossible. To make this bag, being the cardboard plate that will form the box in the folding machine, after performing the operations that make up the spout, and before starting the folding and lateral gluing of the box, we apply glue in a series of box points, and we glue the folded bag, from a coil of folded bags. At this point we have a box that has a bag attached inside it, which thanks to the tail points by which it is attached to the box, accompanies the opening movement to it, so that when the box comes folded, conforms and adopts the appearance of a rectangular prism, also the Bag that is inside will approximately take on the appearance of a rectangular prism.

After filling the bag with the product, in addition to the known horizontal welding necessary to close the bag, a double straight, wavy, broken or similar weld is applied to the bag, its shape and, at least, a vertical cut not being decisive or inclined aimed at ensuring that a corner of the bag - the one attached to the area of the box where the spout is formed - can evolve independently of the rest of the bag. Double welding and cutting, regardless of the shape of their lines, will form a pouring pipe coupled to the pouring spout of the box. The closing of the box is then completed.

Thus, the user who opens the container meets a sealed flexible pouring tube that protrudes from the tip of the spout and will have to cut. If you make the cut so that the flexible tube still protrudes from the end of the pouring spout, this will allow you to clamp the flexible tube when closing the spout, and enjoy a remarkable tightness even after opening the bag, without having to resort to tweezers, etc.

BRIEF DESCRIPTION OF THE DRAWINGS

To better understand the object of the present invention, a graphic representation of a practical embodiment is included herein, with figures:

Figure 1 is a development of the spout box as described in the PCT application ES / 0000200190 (corresponding to figure 1 of the application).

Figure 2 shows the development of Figure 1 with the area that will make up the conveniently bent spout, indicating the glued tabs (corresponding to Figure 4 of the previous application) Figure 3 shows the mounted box and with the spout in position open to dispense the product (it would correspond to figure 4 of the previous application). Figure 4 shows Figure 2 with the gluing areas, where the bag will adhere.

Figure 5 shows Figure 4 with the bag placed in position to be glued to the box. Figure 6 shows the bag with the sealing and cutting areas to form the pouring tube.

Figure 7 shows the previous bag with the pouring tube separated from the main body, to see how it would appear when the pouring spout of the box was opened.

They have indicated the following particularities:

(marks 1 to 15 correspond to figures 1 to 3, of the PCT application ES / 0000200190)

1. Folding line of the side walls (3).

2. Window, will form the front face of the pouring spout. 3. Side walls of the pouring spout.

4. Bending line.

5. Side tab (3) to glue on the face (2)

6. Side tab (3) to glue on the face (2)

7. Tab to glue. 8. Tab to glue.

9. Side wall of the box.

10. Front wall of the box.

11. Precut cut.

12. Box bottom flaps. 13. Gluing flap of the back wall with the side.

14. Clamp with precut cut.

15. Top flap.

(marks 20 to 30 correspond to figures 3 to 6, new) 20. Bag. 21. Gluing area corresponding to the pouring tube.

21st Zone of the bag corresponding to the zone (21) of the box. 22. Lower gluing area of the front wall of the box. 22nd Zone of the bag corresponding to the zone (22) of the box.

23. Gluing areas of the right wall of the box.

24. Gluing area of the left wall of the box

24a Zones of the bag corresponding to the zone (24) of the box. 26. Sealing line to form the bag.

27. Cut into the bag to form the discharge tube (30).

28. Sealing line after filling the bag.

28a, b. Sealing lines that form the discharge pipe (30).

29. Sealed end to be cut at the opening. 30. Pouring tube.

DESCRIPTION OF A PREFERRED EMBODIMENT

Next, an example of a preferred embodiment is described, which should be interpreted in its broadest sense and not taken in a limiting manner.

As indicated above, the present invention relates to a bag to be incorporated into cardboard parallelepiped containers, especially for boxes with distribution system, for example a spout, formed in the same cardboard piece of the box, (for example, as the box described in the PCT patent application ES / 0000200190).

This box is formed from a single die-cut plate like the one indicated in Figure 1, which would correspond to Figure 1 of the mentioned PCT application. This die-cut iron is provided with a plurality of grooves that mark the different folds of the box, constituting the four lateral faces (9, 10) and the flaps with which the bottom (12) and the upper cover (15) are formed. In this plate with which the box is built, one of the flaps is extended by a silhouette with which the pouring spout will be formed, which as can be seen in the figure, has two tabs (5-7, 6-8 ) which end in some forms of protruding spikes, "ears", (3), with a fold line (1) that separates the ends of these tabs (5, 6) from the "ears" (3). On the face (9) of the box, a window (2), which will coincide with the space defined between the ends of the tabs (5, 6) after bending along the line defined by the bending groove (4).

The construction procedure continues by means of the folding of the aforementioned silhouette that will form the pouring spout by the slit (4), proceeding to glue the two branches (7, 8) on the face (9), above and outside the window (2), and the gluing of the tabs (5) and (6) just above the window (2) The result is as shown in Figure 2, where the scratching corresponds to the glued areas. In addition, during the die-cutting process of the cardboard sheet, a window (14) with a flange marked by a pre-cut groove is provided in the window (2), facilitating its breakage. This nail will allow the user to pull the window wall (2) from the pouring spout, causing the breakage through the pre-cut groove (11), and opening the box with an opening in the shape of a pouring spout as seen in Figure 3 (corresponding to figure 4 of the mentioned PCT application). More details of the manufacturing process of the box can be read in the mentioned application.

The improvement proposed in this invention is a bag with a pouring tube formed by cutting and welding, without the need for added parts, and whose best application is to be manufactured accompanying the box with spout already described, which achieves the mentioned advantages Previously: better product protection, easy opening and dispensing, easy and quite airtight successive closures, ease, cheap manufacturing and recyclability.

The first step to make these bags is carried out in the box folding machine. After the folding machine has performed the folding and gluing operations that make up the pouring spout (situation in Figure 2), it glues on a series of points (21, 22, 23 and 24) represented in Figure 4.

Then paste a bag (20) in the position indicated in Figure 4, then continue with the folding and gluing of the sides and bottom of the box. To carry out these two operations, it is inserted between two modules of a folding machine, a module of the type "plastic window glue machine in cases", which will glue using clichés or guns injectors in the areas to be glued, and then place the bag from a coil of bags by means of a cylinder with cutting blade and suction mechanism.

In this way there is a box that has a bag attached inside it, which thanks to the tail points by which it is attached to the box, accompanies the opening movement to it, so that when the box, - which comes folded-, conforms and adopts the appearance of a rectangular prism, also the bag that is inside will approximately take on the appearance of a rectangular prism. The process of filling and closing the bag is also a novelty. At this point the bag is formed from a sheet of paper, plastic or plastic-metallic material (see figure 6) with its right edge formed by a fold and its lower and left edge closed by a weld (26), being The superior open. The known methods fill the bag with the product and then close it with a weld (28) that would go from one end of the bag to the other. Therefore, to open it, it would be necessary to cut through this upper welding.

In the bag and the process of the invention this is not the same. Once the bag is glued to the box by the points (21a, 22a and 24a in Figure 6) and by their corresponding faces on the other side of the bag and has adopted the approximate shape of the box when it is opened, it Fill with the right product. But in addition to welding the entire upper edge (28), a double weld (28a and 28b) and a vertical cut (27) are applied to the bag. The welds (26) may have been made by the pocket to form the bag, and the (28), (28a), (28b) and (29) are those that are made after filling the bag to close it. Of these, the horizontal (28), together with the seal (29), is the normal closure of the bag, and the vertical double width (28a and 28b) and cut (27) in the middle is intended to form a tube of flexible pouring (30) that is adhered to the inner wall of the pouring spout, and that will accompany it in its opening, as can be seen in Figure 7. For this purpose the gluing point 21a must be in the flexible tube, and correspond with the gluing point 21 in the box, which will be in the front area and in part of the "ears" or sides of the spout.

It is recommended that the perimeter of the bag be slightly larger than the box containing it, although this too much may not be apparent through the use of longitudinal bellows-type folds, so that when the flexible tube continues on its way to the spout when it is opened, it does not cause tensions between the glued areas.

There is also no bag-closing machine on the market that performs vertical welding and cutting, since until now it had no object, but it is not difficult to adapt the current ones to this new function.

When the user opens the container by opening the window (2) by means of the lug (14) of the box, he meets a sealed flexible tube (30) that protrudes from the end of the spout and will have to open or cut at its end (29) to serve the product contained in the bag. If you make the opening or cutting so that the flexible tube still protrudes from the end of the spout, this will allow you to clamp the flexible tube when closing the spout, and enjoy a remarkable tightness even after opening the bag, without having to resort to tweezers, etc.

Finally, it should be noted again that this type of bag could also be placed in a box without a spout, for example only with an opening window and without side walls, or in a box with another spillage system.

An example of embodiment has been illustrated with the foregoing explanation, without this meaning that the patent protection does not extend to any other product or to any manufacturing mode that essentially follows the spirit of the invention.

Claims

I ^a ) Airtight bag of those used to transport and distribute granulated, powdery or liquid products, of those made from a sheet of paper or plastic or plastic-metallic or similar material by bending and welding the bottom and side wall, characterized by having a flexible pouring tube formed at one end of its upper edge by adding two vertical welds or a double width vertical weld and a vertical cut in the middle to the upper transversal weld, without the need for parts added to the upper starting sheet, the user having to open only the end of this tube to distribute the product.

2) sealed bag used for transporting granulates, powders and liquids according to claim I ^to characterized by being adhered this bag to a parallelepiped box by means of glue points given to the box, and being the bag glued such a position that the poured tube of the bag coincides with an opening area of the box.

3 ^a ) Airtight bag of those used to transport granulated, powdery or liquid products according to claim I ^a or 2 ^a characterized by being adhered to a box with a pouring spout where the box is opened to distribute the product - being adhered box and bag by means of gluing points given to the box, and for being the bag glued in a position such that the pouring tube coincides with the pouring spout of the box, so that when opening the box and taking out the pouring spout a the distribution position, the flexible tube of the bag accompanies the peak to be able to distribute the product through the flexible tube of the bag and resting on the spout.

4) sealed bag used for transporting granulates, powders and liquids according to claim 2 or 3 characterized because the pouring tube is long enough so that, after opening the first time, it can be pinched by the flap, pouring spout or any other means of opening and closing the box, without needing any external accessories for closing.

5 ^a ) Procedure for making bags similar to those described in any of the preceding claims by a machine with a packaging module characterized in that the module first forms the box, then folds the four upper flaps, unfolds the mouth of the bag, fills the bag with the desired product, and then closes it with a transverse weld at its upper end, and characterized in that in addition to this closed weld a double vertical weld and a vertical cut in the middle of said weld is applied to the bag, so that a flexible pouring tube is formed in the bag.

6 ^a ) Procedure for making bags according to the preceding claims characterized by placing the bag inside a packaging in the form of a parallelepiped cardboard box or the like, gluing the bag to the box before folding it, when it is still a flat cut, by means of a module similar to those of plastic window glue machines in cases, and applying in this module glue by means of clichés or injection guns in the areas to be glued in the box, and placing the bag so that the area where the flexible tube will be formed pourer is in the area of the box pourer, then continue with the folding and gluing of the sides of the box, so that when it is opened during its forming, the glued bag adopts the approximate shape of the box, then filling and closing.

7 ^a ) Procedure for making bags according to the preceding claims characterized by placing the bag inside a box-shaped packaging provided with a product distribution system such as a pouring spout formed on the same cardboard die-cut plate of the box, gluing the bag so that a gluing area is placed in the front and part of the sides of the beak pourer that joins what will be the flexible tube of the bag, and then following with the same procedure of forming the box, filling and closing.