ES2235567B1 - PACKING BAG TO PRESERVE AND DISTRIBUTE GRANULATED, PULVERULENT OR LIQUID PRODUCTS AND MANUFACTURING PROCEDURE. - Google Patents

Abstract

Airtight bag of those used to transport and distribute granulated, powdery or liquid products, of those made from a sheet of paper or metallic plastic or plastic material, welded longitudinally and transversely to be incorporated into cardboard parallelepiped containers, especially suitable for being placed inside a box with a distribution system, for example a spout, formed on the same piece of cardboard in the box. In the manufacturing and filling process a flexible pouring tube is formed in the bag at its upper edge by means of two welds or a double-width weld and a vertical cut in the middle, without the need for added parts, and this tube being the bag glued to the pouring spout, so that the user only has to open the end of this tube, attached to the pouring spout of the box, to distribute the product. Procedure to prepare this bag with distributor tube at the same time as the box with spout.

Description

Packaging bag to conserve and distribute granulated, powdery or liquid products and process of manufacturing.

Object of the invention

The present invention relates to a bag for be placed inside a box to preserve and distribute granulated, powdery or liquid products and to the procedure for its manufacture.

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

Background of the invention

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

To improve the conservation of these products They are usually contained in airtight bags of paper or material plastic or plastic-metallic. Then the function main of the carton is to protect the bag, facilitate its manipulation to be the rigid box and present some faces with surfaces suitable to be 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 conservation, offering a fairly good tightness even after the first open time, if after using it the consumer closes it by folding his mouth with careful and even securing it with a clamp or similar.

For this reason in the market the granulated or powdery type products in bags contained in a box as described above. However the main drawback, leaving the major or minor aside complexity of manufacturing and filling with the product, you appears to the user: in the first use you must open the box on the top and open or cut the bag with the product. After serving you should close the bag again by folding your mouth carefully and secure the closure to get a good conservation.

There are other containers, manufactured from laminated complexes of cardboard-plastic-metal carrying welded or glued a nozzle, usually of a different material the one in the box, which helps its dispensing, and once opened It can be closed again with a cap or similar. The packaging of this Type are usually only for liquids.

However, boxes are not known in the market with bags whose discharge system is by means of a shaped peak In the box and bag itself, easy to open and use and easy to close without the need for special operations and to add a external security of the closure such as a clamp. Another advantage it would be that it could be used for different granulated products or powdery, even for liquids. It would also be convenient that in its manufacture only the carton of the box and the bag will be used inside, without having to glue or weld shaped parts like nozzle and closure.

The invention contained herein refers to 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 parallelepipedic containers of cardboard, with the advantages mentioned above. Although I could adapt to any cardboard box similar to those already known, This bag is especially suitable to be placed in the inside a box with a distribution system, for example a pouring spout, formed in the same cardboard piece of the box. In particular, the preferred embodiment explained more forward for the bag and for the manufacturing procedure is the suitable to be manufactured together with a box with a spout as described in PCT patent application ES / 0000200190, with the title "Manufacturing procedure and box perfected with verting beak".

This application describes a procedure of manufacturing and a folding box, constituted from a die-cut iron, preferably cardboard, folded over certain bending and gluing lines in certain areas of union, giving rise to a parallelepiped shaped box provided of a spout peak. The novelty of this invention is that the spout peak is obtained from the waste that originates on a top side flap, instead of adding faces supplementary glued, being the entire operation liable to be made in high speed automatic machines.

The bag object of the present invention is shaped so that it takes advantage of this peak pourer, using it as a sealed mouth to be dispensed product the first time, as a spout and as a means of giving seal tightness until the next time it is used.

In addition, the procedure of manufacturing together with the box with spout, being adhered to the box in a series of glued points.

Description of the invention

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

The invention described in that application is a manufacturing procedure and spout box, consistent in a way of making a folding box, constituted from a die-cut iron, preferably cardboard, folded over certain bending and gluing lines in certain areas of union, giving rise to a parallelepiped shaped box provided of a spout peak. This box has advantages over others packaging for transporting products that also serve as retailer.

There are boxes without any system to sell the product.

Other boxes have a locking system or pouring consisting of a piece of the same box material, or either of plastic or similar material that is added to the box during The manufacture of this.

But no boxes with spillage system are known formed 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 is described in the aforementioned PCT application. In this application you describes the box with spout and the system for mounting to from a single cardboard board or similar.

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

This type of bag could also be placed in a box without spout, for example with only a window of opening and without side walls, or in a box with a system of pour formed by an added piece, but the advantages would be minors Most of the spikes peaks, - those generated from of additional 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 you have the advantage that with the box described in the mentioned PCT application, you can stick a bag inside the spout peak, which in the other cases is impossible.

To make this bag, the iron being cardboard that will form the box in the folding machine, after carry out the operations that make up the spout, and before start folding and gluing the side of the box, we apply glue on a series of points of the box, and we glue the folded bag from of a coil of folded bags. At this point we have a box which has a bag attached inside it, thanks to the points glue by which it is attached to the box, accompanies in the opening movement to it, so that when the box, which it comes folded, conforms and adopts the appearance of a prism rectangular, also the bag inside will adopt approximately 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 straight, wavy double weld is applied to the bag, broken or similar, its form not being decisive and at least a vertical or inclined cut aimed at getting a corner of the bag - the one attached to the area of the box where the pourer - can evolve independently of the rest of the bag. Double welding and cutting, whatever the shape of their lines, will form a discharge pipe coupled to the pouring spout of box. The closing of the box is then completed.

Thus, the user who opens the package is with a sealed flexible pouring tube protruding from the end of the pouring spout and that will have to cut. If you make the cut of so that the flexible tube still protrudes from the tip end pouring, this will allow you to pinch the flexible tube when closing the  pourer, and enjoy a remarkable tightness even after open the bag, without resorting to tweezers, etc.

Brief description of the drawings

To better understand the purpose of this invention a graphic representation of a practical realization, with figures:

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

Figure 2 shows the development of Figure 1 with the area that will make up the bent spout conveniently, indicating glued tabs (would correspond to figure 4 of the previous application).

Figure 3 shows the box mounted and with the spout in open position to dispense the product (would correspond to figure 4 of the previous application).

Figure 4 shows Figure 2 with the zones of glued, 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 areas of Sealing and cutting to form the pouring tube.

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

They have pointed out the particularities following:

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

one. Folding line of the side walls (3). 2. Window, will form the front face from the pouring spout. 3. Side walls verting beak. Four. Line of bent. 5. Side tab (3) a glue on the face (2). 6. Tab side (3) to glue on the face (2). 7. Tab glue. 8. Tab glue. 9. Side wall box. 10. Front wall of the box. eleven. Slit pre-cut 12. Background flaps box. 13. Wall gluing flap posterior with the lateral. 14. Nail with pre-cut groove. fifteen. Flap higher.

(marks 20 to 30 correspond to the Figures 3 to 6, new).

twenty. Bag. twenty-one. Zone of glue corresponding to the tube spill. 21st Stock zone corresponding to 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. 2. 3. Wall gluing areas right of the box. 24. Gluing area of The left wall of the box. 24th 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 pipe (30). 28. Sealing line After filling the bag. 28a, b. Lines sealing that form the discharge pipe (30). 29. Sealed end to be cut in the opening. 30 Tube of spill.

Description of a preferred embodiment

An example of a mode is described below. of preferred embodiment, which must be interpreted in its sense broader and not taken in a limiting way.

As indicated above, this invention refers to a bag to be incorporated into packages Cardboard parallelepipeds, especially for boxes with system distribution, for example a spout peak, formed therein 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 plate die cut as indicated in figure 1, which would correspond to the Figure 1 of the aforementioned PCT application. This die cut iron it is provided with a plurality of indentations that mark the different folds of the box, constituting the four faces (9, 10) lateral and the flaps with which the bottom (12) are formed and the upper cover (15). On this plate with which it is built the box, one of the flaps is extended by a silhouette with which the pouring spout will be formed, which can be seen in the figure has two tabs (5-7, 6-8) that end in some forms of peaks protrusions, "ears", (3), with a fold line (1) that separate the ends of these tabs (5, 6) from the "ears" (3). On the face (9) of the box, a window (2) is provided, 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 folding the aforementioned silhouette that will form the peak pourer through the slit (4), proceeding to glue the two ramifications (7, 8) on the face (9), above and outside the window (2), and to the gluing of the tabs (5) and (6) just above the window (2) The result is as shown in Figure 2, where the Scratched corresponds to the glued areas. Also, during the die cutting process of the cardboard plate, in the window (2) it has a nail (14) with a flange marked by a slit precut, facilitating its breakage. This nail will allow the user pull the window wall (2) from the pouring spout, producing the break through the pre-cut groove (11), and opening the box with a spout-shaped opening 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 recycling
bility

The first step to make these bags is It takes place in the box folding machine. After the folding machine has performed folding and pasting operations that make up the spout peak (situation in figure 2) applies tail in a series of points (21, 22, 23 and 24) represented in the figure 4.

Then paste a bag (20) into position indicated in figure 4, then continue with the folding and glued on the sides and bottom of the box.

To carry out these two operations, sandwiched between two modules of a folding machine, a module of the type "plastic window glue machine in cases", which will apply glue through clichés or injection guns in the areas to be glued, and then placed the bag from a coil of bags by means of a cylinder with cutting blade and suction mechanism

This way you have a box that has been attached inside a bag, which thanks to the tail points by which is attached to the box, accompanies the opening movement to it, so that when the box, which is folded, is 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 It is also a novelty. At this point the bag is formed to from a sheet of paper, plastic material or plastic-metallic, (see figure 6) with its edge right formed by a fold and its lower and left edge closed by a weld (26), the upper one being open. The known methods fill the bag with the product and then they close it with a weld (28) that would go from one end to the other of the bag. So to open it, you would have to cut through this upper weld

In the bag and the process of the invention this does not It does not matter. Once the bag is glued to the box by the points (21st, 22nd and 24th in figure 6) and for their corresponding faced on the other side of the bag and has taken the form approximate of the box when it opens, it is filled with the product suitable. But in addition to welding the entire upper edge (28), it apply a double weld (28a and 28b) and a cut (27) to the bag vertical Welds (26) may have been performed by the pocket to form the bag, and the (28), (28a), (28b) and (29) are those that are done after filling the bag to close it. From these, the horizontal (28), together with the seal (29), is the closure normal bag, and the vertical double width (28a and 28b) and cut (27) in the middle is intended to form a pouring tube flexible (30) that adheres to the inner wall of the spout pourer, and that will accompany you in your opening, as you can see in figure 7. For this purpose the gluing point 21a must be in the flexible tube, and correspond to the gluing point 21 in the box, which will be in the front and partly of the "ears" or sides of the spout peak.

It is recommended that the perimeter of the bag be slightly higher than the box that contains it, although it is Too much may not be apparent by using folds longitudinal bellows type, so that when the flexible tube continues  on your way to the pouring spout when it opens, do not cause tensions between the bonding areas.

There is also no machine on the market bag sealer that performs vertical welding and cuts, and which until now had no object, but it is not difficult Special technique adapt the current ones to this new function.

When the user opens the container by opening the window (2) by means of the fingernail (14) of the box meets a sealed flexible tube (30) protruding from the end of the pourer and that you will have to open or cut at its end (29) in order 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 pouring, this will allow you to pinch the flexible tube when closing the pourer, and enjoy a remarkable tightness even after open the bag, without resorting to tweezers, etc.

Lastly, note again that This type of bag could be placed in a box without spout, for example only with an opening window and without walls side, or in a box with another pouring system.

With the previous explanation, a example of embodiment, 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 (7)

1. 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 material or similar by means of bending and welding of 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 transverse weld, without the need for parts added to the sheet Starting, the user having to open only the end of this tube to distribute the product. 2. Airtight bag of those used to transport granulated, powdered or liquid products according to claim 1 characterized in that this bag is attached to a parallelepiped box by means of gluing points given to the box, and for being the bag glued in a position such that the pouring tube of the bag coincides with an opening area of the box. 3. Airtight bag of those used to transport granulated, powdery or liquid products according to claim 1 or 2 characterized in that it is adhered to a box with a pouring spout where the box is opened to distribute the product, box and bag being attached by means of gluing points given to the box, and because the bag is glued in a position such that the pouring tube coincides with the pouring spout of the box, so that when opening the box and removing the spout peak to the position of distribution, 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. Airtight bag of those used to transport granulated, powdery or liquid products according to claim 2 or 3, characterized in that the pouring tube is of sufficient length so that, after opening the first time, it can be trapped by the flap , pouring spout or any other means of opening and closing the box, without needing any external accessories for closing. 5. Procedure for making bags similar to those described in any of the preceding claims by means of a machine with a packaging module characterized in that the module first forms the box, then folds the top four flaps, unfolds the mouth of the bag, fills the bag. 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, of so that a flexible pouring tube is formed in the bag. 6. 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 pouring flexible tube will be formed it remains in the area of the box spout, and then continues 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. Procedure for making bags according to the preceding claims characterized by placing the bag in a box-shaped packaging provided with a product distribution system such as a spout formed on the same cardboard die-cut plate of the box, gluing the bag so that a gluing area is placed in the frontal area and part of the sides of the pouring spout that joins what will be the flexible tube of the bag, and then following the same procedure of forming the box, filling and closed.