ES2285708T3 - PLASTIC BAG DISPENSER AND PLASTIC BAG FOR USE IN SUCH DISPENSER. - Google Patents

Abstract

Plastic bag dispenser comprising a box adapted to hold a roll (6) that can freely rotate around an axis horizontally in the box, said roll (6) consisting of a chain of bags with finished, joined, successive folds of a flexible plastic material, each bag being provided with two lateral handles (43, 44) placed on both sides of a central recess (42) in each of the bags (40), said bags being connected by a separation line between the bottom of each bag and the handles of the next bag in the chain, and in which the dispenser is designed with an outlet opening for said bags to be removed from the dispenser, said exit hole being formed for said bags by an elongated opening (9) extending substantially in the axial direction of the roll (6), as well as fastening elements (10, 11) adapted to allow the suspension of the two handles of a bag removed said bags, and means are provided for controlling the movement of said bags, characterized in that - an upper side of the box is formed by a substantially horizontal support plate (2) with a front edge (2a) and a rear edge (2b), and the outlet orifice is provided on the upper side of the box, - the means for controlling the movement of said bags are provided below the support plate (2) such that the head handles of the individual bags appear through the opening at the ends of said opening and - the fastening elements (10, 11) are placed above each end of the opening (9) of the support plate (2).

Description

Plastic bag dispenser and bag plastic for use in said dispenser.

The present invention relates to a plastic bag dispenser according to the first part of the claim 1 of the type comprising a box adapted for hold a roll that can rotate freely horizontally in the box, said roll consisting of a chain of bags with finished, continuous folds of a flexible plastic material, each bag is equipped with two side handles placed on both sides of a central recess in the bag, bags that are connected by a separation line between the bottom of a bag and the handles of said bag, and in which the dispenser is designed with an outlet hole for each bag removed from the dispenser, said outlet opening being formed for the bags by a elongated opening that extends substantially in the direction axial roll, as well as fasteners adapted to allow the suspension of the two handles of the bag removed, and are provided means to control the movement of a bag.

A dispenser of this type is known by the French patent number 2 558 704 which discloses a device to dispense bags of a flexible material that are dispensed towards down by means of a motorized drive and are pulled from a roll. Below the outlet hole this device has several fasteners that the customer can use for the suspension of a plastic bag that the device delivers by medium of air blowing in the open state.

A drawback of such a device it must be seen that it requires a lot of space both behind the Item delivery counter as above this counter, and in that at least some of said fasteners are present on the output side of the device.

Another provision for dispensing bags of Plastic one by one is known by the Danish patent application DK 1620/88, which corresponds to EP-A-286 498 and US-A-4 793 539. Figure 1 of This publication also shows plastic bag chains continuous rolled up the type that has handles lateral.

This known arrangement, in which below of a counter in a cash register two are arranged Continuous plastic bag rolls have two bag exits each with a serrated opening through which a bag and is released from the next bag. A drawback of this solution is that the bag, which the customer removes, wrinkles what forces the client to smooth it before opening it.

At the exit of, for example, a supermarket normally there is at least one box, said box including a ribbon conveyor on which the customer places their items, the own cash register with a price reading device and a exit belt or a slide or just a counter as in the previous post.

Often the bags (maybe paid) are delivered by the staff, after which the client must take care of opening the Bag yourself and fill it with items.

The various operations can take a lot time for both cashier and customer staff.

The document EP-A2-0381914 describes a automatic plastic bag dispenser arranged at the end  counter outlet, in which a complicated mechanism is equipped with means to pneumatically open the plastic bag of head of a chain of plastic bags rolled up of the type described above, and with bars that are inserted first on the handle of the bag and then move to separate the next bag bag and to open these bag handles and keep the bag open ready for use at the end of the counter.

A drawback of this known system is that the required mechanism is quite complicated, which naturally it is a comparatively high unit price, for which reason it assumes that the system is more suitable for larger stores than for smaller ones in which, for example, there is only one, two or Maybe three boxes.

SE-B 351 559 describes a plastic bag dispenser, in which the bags Plastic chain are connected to a side edge longitudinal and are equipped with two openings in the upper part oblong that the customer can use to carry the bag. The Header bag from the bag chain is removed manually and placed vertically in a box-shaped exit space, then of which the two handles of the bag are rolled over two projections on the top of the box in such a way that the Bag stays upright and open in the box.

According to the invention, a bag dispenser of plastic differs from the type shown by way of introduction in that the upper side of the box is formed by a support plate substantially horizontal with a leading edge and an edge rear, and the exit hole is provided on the upper side of the box, the means to control the movement of a bag are provided below the support plate in such a way that the head handles of the individual bags appear through the opening at the ends thereof and the fasteners are placed above each end of the opening of the support plate

A plastic bag dispenser of this type offers several advantages.

As will be observed in detail from the Detailed description, the box with the roll of bags arranged in it can form an independent unit that can be done interchangeable, in such a way that the staff, when an bag roll can change the box for a new box with a bag roll

The bags are removed one by one by their handles to through the opening and can be immediately placed on the support plate The controlled movement of the bag that is removed It has the effect that the bag does not wrinkle and therefore is easier to use

According to a preferred embodiment, the plastic bag dispenser can be characterized in that the elongated opening is profiled in such a way that it curves inward towards the front edge of the support plate and has a substantially central, circular arc-shaped lobe facing the rear edge of the support plate, and because the control means below the support plate are formed by at least one roller that is parallel to the axis of the bag roll and the support plate, said roller being displaced in one direction towards the front edge of the support plate with respect to the longitudinal axis of the opening. In this embodiment, the bag that is about to be removed through the opening in the support plate is controlled by the roller, whereby a wrinkle of the bag is avoided and due to the guide roller positioned closest to the front edge of the support plate that the opening itself, the lobe during the extraction of the bag will be hooked with the central opening of the next bag, whereby the bag to be removed is separated by the continuous thrust of the next bag. Simultaneously, the special profiling of the opening of the support plate has the effect that the side edges of the bag are evenly distributed towards the ends of the opening of the support plate. This opening profiling is known per se from EP-A-0 558 322.

According to another preferred embodiment, the dispenser of plastic bags can be characterized because the means of control are several counter rotation rollers, preferably coated with friction material and in pairs touching each other others along their generators, supporting these rollers by bearing so that they can turn freely in two End tabs below the support plate.

The counter rotation rollers guarantee a even more precise control of bag movement. Because these rollers and the friction effect obtained by their material friction results that a bag can be removed from the dispenser uniform way only by pulling a handle from the bag.

According to a further embodiment of the invention, the bag dispenser according to the invention can be characterized because the box is substantially shaped like a suitcase with a bottom and with a cover, because one side of the part bottom is part of said support plate substantially horizontal, because said elongated cut is provided along the longitudinal edges of said one side of the bottom of the suitcase and the cover, because the tree of the roll of bags of plastic and rollers parallel to it are supported by rotating bearing on the end walls of the part bottom of the suitcase, because on the inner side of the cover with respect to the inner compartment of the box a rotating roller, said roller being parallel to said tree and said rollers, and pressure springs press the last roller in a direction away from the cover in contact with the rollers remaining on the bottom of the suitcase when the cover is close

The realization makes particularly simple for store staff after opening the cover placement of a new roll of plastic bags in the box and drive the handle the roll header bag up and place them on the opening and then close the cover again.

In addition to the operations above mentioned that take a long time (cash staff distributes the bags manually or the customer takes the same a bag from a supply next to the cash register) is also annoying for the customer that the bag is held normally open with one hand and that items, particularly foods that are wrapped in a thin plastic film does not "slip" easily inside the bag.

By rolling each of the handles of the bags through a stand, the customer can now use more Easily both hands to fill the bag with items while The bag stays open.

According to another embodiment of the invention, the plastic bag dispenser can be characterized because it provides a profiled plate above the support plate, a part of which extends towards the front edge of the plate of support, and because said fasteners are mounted on the top of this plate and are placed above the area of the support plate between its opening and its edge frontal.

The advantage of such a profile plate that supports the fasteners is that the client that extracts a bag is forced to do this in an upward direction towards it, which makes the separation of the Next bag bag.

Preferably, the fasteners are placed substantially above a respective end of the opening of the support plate.

However, it can be difficult for the client. release the handles of a heavy bag, filled with such means of bag suspension

In this regard, a preferred embodiment of the bag dispenser according to the invention can be characterized because each clamping element is formed by an arm of support that can be mounted on the plate and by two branches connected to each other in an articulated way and connected to the end of the support arm away from the plate, forming said branches an annular handle, and because at the end of the support arm and  at the corresponding end of at least one of the two branches spring means are provided that tend to match the two branches, but which can allow the two branches to open to the free passage of one hand and the corresponding handles of the bag during an upward movement to lift the plate bag of support.

In this embodiment the client no longer has to try to release the handles of a heavy, full bag of the element clamping The client must only insert his hand or hands into the handles and lift the bag. The two branches of the element of hold will open and provide free passage for the hand or hands, and then automatically return to a closed position, in which the two branches once again form an annular handle.

According to a further embodiment of the invention, the plastic bag dispenser can be characterized because the box has means to detachably suspend the box in a vertical wall, and because each clamping element consists of two mutually articulating branches that together form a handle annular, one of whose branches is fixedly mounted on the wall, and the other branch is previously tensioned by means of spring to lean in one direction towards said a branch to close the ring handle.

Advantageously, the sectional dimension cross section of the clamping element from the outer side of a branch to the opposite outer side of the second branch can be larger than the largest dimension of the opening in the handle of the bag.

The invention also relates to a plastic bag for use in a plastic bag dispenser according to the invention. A plastic bag such that it is part of a continuous chain of bags with finished, joined folds of a plastic material, said bag having two handles arranged laterally placed on both sides of a central recess in the bag, and which are connected in The chain of bags with the other bag by a separation line between the bottom welded seam of that bag and the handles of said bag, can be characterized according to the invention because the folds of the bag each have a width (f) of approximately 1 / 3 of the width of the bag (B), because the recess has a depth (d) of approximately ¼ of the height dimension of the bag, because the recess at a lower edge has a width (n) greater than the width ( m) at the top of the recess between the handles), because the width (m) at the bottom of the recess is greater than 1/3 of the width (B) of the bag, and because the parts of the two bag folds are folded and welded or glued along the fold line created in this way through a line that extends obliquely upwardly from a point in the welded seam up to the corresponding lateral edge of
the bag.

The advantage of such a plastic bag is that after having been removed from the dispenser, the suspension by means of the two handles on the clamping element, and unfold completely at the bottom, presenting the bottom the same way as a cardboard box or bag paper, so it becomes easier for the customer to fill the bag with items.

Now the invention will be explained in detail with reference to the schematic drawing, which shows an example of a realization of the plastic bag dispenser according to the invention, and in which:

Figure 1 is a perspective view of the essential parts of the plastic bag dispenser according to the invention,

Figure 2 shows the bag dispenser plastic according to figure 1 seen from the end,

Figure 3 is a partial view seen from above the dispensing mechanism shown in Figure 1,

Figure 4 is a section view transverse of a chain of bags with continuous folds,

Figures 5a to 5d illustrate the use of bag dispenser from the moment a bag has been extracted until the moment when the bag is filled with articles,

Figures 6 and 7 are perspective views of a box similar to a suitcase with open and closed cover, respectively,

Figure 8 shows another embodiment of a bag dispenser according to the invention,

Figure 9 shows another embodiment of a part of the bag dispenser shown in Figure 8,

Figure 10 shows an embodiment in detail of a bag according to the invention,

Figure 11 shows, along line 147 section in figure 10, the profile of the bag in a somewhat state stretched out, and

Figure 12 is a perspective view of the bag according to the invention in almost completely stretched state.

Figure 1 shows in perspective and seen from above a part of the bag dispenser according to the invention. In Figure 1 the sheet material cabinet, for example metal, in the one that is integrated the bag dispenser has been omitted by reasons for clarity The closet is shown with 1 in figure 2.

A support plate 2, for example rectangular, which in a position ready for use (figure 2) will be substantially horizontal, supports its two mutually parallel, vertical tabs 3, 4. Between these two tabs 3 and 4 a separable support shaft 5 can be provided for a roll of plastic bags of the type described above in a manner known per se . The shaft 5 extends parallel to the plate 2 and can be rotated with respect to the tabs 3 and 4.

On top of support plate 2 a specially profiled plate 7 is present which can form a part of the cabinet 1 of the bag dispenser, see figure 2.

As will be seen from Figure 2, illustrating a construction according to figure 1 seen from the end, plate 7 is practically S-shaped. The purpose of This particular profiling of plate 7 will be explained below. in detail.

On support plate 2 and plate 7 profiled an opening 9 is provided, whose particular shape appears in more detail in figure 3.

On the top of the plate 7 two elements 10 and 11 bag fasteners are properly positioned  separated above the support plate 2.

Figure 2 shows the device shown in Figure 1 seen from the end. Below plate 2 of support are provided three rollers 20, 21, 22. These rollers are mounted so that they can rotate freely with respect to tabs 3 and 4 and extend in parallel with plate 2 of support and tree 5 support roll 6 bags plastic.

Preferably, the three rollers 20, 21, 22 they are coated with a layer of friction material, for example rubber.

Two springs 23 and 24 between stops 25 and 26, respectively in the flanges and the roller shafts 21 and 22 respectively force rollers 21 and 22 respectively to butt with roller 20 but, nevertheless, they are what sufficiently elastic for, with a view to introducing the bag of head of a roll of bags 6 between the two rollers 21 and 22 in the sequence shown in figure 2, allow the two rollers 21 and 22 press slightly away from roller 20. When This bag has been placed between the rollers, springs 23 and 24 press the two rollers 21 and 22 again to stop against the roller 20, so that the bag is pressed between them and is guided by the rollers. The respective directions of rotation for rollers 20, 21 and 22 are indicated by arrows

Figure 3 shows the device according to the Figure 1 seen from above. However, for reasons of clarity the profiled plate 7 and both have been omitted from Figure 3 10 and 11 fasteners. Also, for reasons of clarity, has omitted the indication of dashed lines with respect to parts of rollers 20, 21 and 22, which in the configuration shown in figure 2 are placed below the plate 2.

Thus Figure 3 shows the support plate 2, the two tabs 3 and 4, the opening 9, the three rollers 20, 21 and 22 with stops 25, 26 associated and springs 23, 24, stops and Springs on the right side of Figure 3 have the same design, for which reason no reference numbers have been provided, and the roll of plastic bags 6 placed below plate 2 of support and rollers 20, 21 and 22. Double arrows on the side left and right of figure 3 indicate the effect of the springs mentioned above.

The opening 9 in the embodiment shown in the Figures 1 and 3 have substantially the shape of a ticket, it is say like the blade of a broad ax. An edge 30 of the opening it can have a circular profile while the opposite edge of the opening has a profile consisting of three zones in the form of arch, that is two outer zones 31 and 32 and a central zone 33 arc-shaped The central part 33 forms a lobe that points towards the edge 30 of the opening.

It should be noted that the profiled plate 7 shown in figure 1, whose part 7a is placed horizontally  on top of the support plate 2 is also equipped with the same type of opening.

Reference is again made to Figure 1 and in particular to figure 2. The two fastening elements 10 and 11 are support by two respective support arms 12 and 13 that have been fixedly mounted on the plate 7 at its upper edge and to a suitable distance above the support plate 2.

Each clamping element 10, 11 consists of two branches 14, 15 that are articulated with their respective arm 12, 13 support at a point 16 of joint connection and by means of spring not shown integrated in the branches 14, 15 and in the associated support arm 12, 13, these two branches 14, 15, with views to the next end, can be opened in a remote direction from one another against the action of the spring means and, under the influence of the spring means, press one next to another one again. This possibility of mutual movement of the two Branches 14, 15 of each fastener is indicated by the double arrow in figure 2.

Figure 4 schematically shows a part of a chain of so-called bags 40, 41, ... with folds. Such bags of plastic material, for example, polyethylene or the like, are made in a manner known per se such that each bag is provided with a recess 42 and is only joined with the next bag in areas 40a, 40b, 41a , 41b, etc., ... of edge. The recess 42 in the individual bag is wide enough to provide, when one bag is separated from the next, two handles 43, 44 that the customer can use to carry the bag.

Figure 5 illustrates the use of a bag removed Of the device. Figure 5a shows that the bag 40 has been removed from the device and is ready to be placed vertically. Figure 5b shows that the handles of bag 43 and 44 are now at the level of the fasteners. Figure 5c shows that handles 43 and 44 have now been rolled over their elements of Restraint respective, the bag unfolds and opens. Figure 5d shows that the customer, now using both hands, can fill The bag with items.

Figures 6 and 7 show another embodiment in which the box now has a similar shape to a suitcase 60 with a lower part 61 of suitcase and a cover 62. For reasons of clarity, the end walls of the bottom of suitcase do not are shown in figure 6, and figure 7 only shows wall 64 extreme as far from the observer.

The lower part 61 of the suitcase holds the roll of bags 6 in its support shaft 7 as well as two rollers 20, 21 parallel to this tree and preferably coated with a layer of friction material As will be best seen from the Figure 7, the inner side of the cover 62 supports a roller 22 parallel to tree 5 of the roll of bags, roller that can have also a coating of friction material and by which is previously tensioned by springs 65 in a remote direction of cover 62.

In figure 7 the cover 62 is open and the staff can easily insert a new roll and arrange the handles of the first roll bag on the longitudinal edge of the lower part 61 of the suitcase and cover 62 respectively, after which the cover is closed, see figure 6.

In this position, the rollers 20, 21, 22 they will be in contact in pairs (20, 22; 21, 22) throughout their generator and so will be in coupling operated with the bag. By reasons for clarity, the intermediate space between roller 20 and the roller 22, roller 21 and roller 22 respectively have Showed something bigger than normal. In fact, these rollers they will be in contact with each other, as already stated above, by peers

A box 60 similar to a suitcase of this type can be equipped with means (not shown) for the suspension of the box on a wall, preferably below two elements of Attachment of the bag attached.

With respect to these fasteners, you must Note that its largest transverse dimension from the side outside of a branch to the opposite outer side of the second branch must be larger than the largest dimension of the hole in the bag handle. In this case the handles are prevented from moving forward. down towards the support arms 12 of the elements of bag holder.

If the dispenser has the realization in which a box similar to a suitcase is used, advantageously the fasteners of the bag may be provided in such so that a branch of them is fixedly connected to the wall that supports the box, while it is only the other branch away from the wall which can move obliquely and pre-tensioned in one direction towards the branch mounted so fixed.

The operation of the bag dispenser described in this case will now be explained in detail.

The bag dispenser is supposed to be placed in a cash register in a supermarket or store Similary.

The staff has planned a roll 6 of bags in the device and has inserted the handles of the first bag between the rollers 20, 21, 22, in such a way that the Bag handles just above the opening 9.

A customer who wants to remove a bag from dispenser just pull a handle up with Regarding the device.

The special shape of the profiled plate 7 (see Figure 2) forces the customer to pull the bag (on a handle or two) obliquely upward in the direction indicated by the arrow P, that is, slightly away from the device.

During this movement, lobe 33 enters the recess 42 of the next bag, said bag stopping, while the bag removed is separated from the handles of the next bag, which has already been inserted between rollers 20 at that time, 21, 22 and is now ready to be removed from opening 9.

The particular shape of the opening 9 of the dispenser with respect to the straight rollers 20, 21, 22 and the advantageous placement of said rollers with respect to the opening 9 of the dispenser makes the bags evenly distributed over the entire extent of this dispenser opening and makes the handles of the bag are automatically arranged by themselves in the ends of this opening, even if it is pulled only of a handle of the bag.

When a bag has been removed from the dispenser, can be used as explained with reference to the figure 5.

As long as the bag is empty it is very easy for the customer to roll handles 43, 44 of the bag over fasteners 10 and 11, see figure 5c.

When the bag has been filled, however you can be difficult to roll the handles of the bag 43, 44 back to release clamping elements 10 and 11.

Therefore, according to the invention it is advantageous design the clamping elements 10 and 11 as already described  previously, that is, with spring means.

The client does not have to try to roll back the handles, you just need to place your hands under the Bag handles (figure 5d) and lift the bag. Then the hands of the user will pass freely between the two branches 14, 15, so that are forced to open and then due to the means of clamping element spring return back to position normal (branches 14, 15 closed).

As mentioned earlier, the box that comprises the support plate 2, the tabs 3, 4, the rollers 20, 21, 22 and the remaining parts of the mechanism, including the tree of the roll of bags, can be designed as a unit interchangeable in cabinet 1 of the bag dispenser. This allows staff to maintain a provision of one or more boxes re-filled in such a way that when a roll of bags has been used, then a new box with a new roll of bags can be quickly disposed in the dispenser.

It should be noted that the plate 7 profiled in particular does not necessarily have to be S-shaped, such as is shown in figures 1 and 2, in which the lower part 7a of the plate 7 covers the upper side of the support plate 2. The plate 7 could also extend from the center of the arch in shape of S directly down towards the support plate, always that the general shape of the plate 7 and the position of the elements 10, 11 of clamping cause the effect of the client to see forced to pull the bags up in the direction indicated by arrow P in figure 2.

It should also be noted that the opening 9 in the support plate 2 does not necessarily have to be of the special embodiment shown in figures 1 and 3. For example, the opening in the support plate 2 can only be an opening rectangular, while the horizontal part 7a of the plate 7 has a corresponding opening in the manner described herein document.

It should be further noted that instead of the straight guide rollers could be used two or more pairs of counter rotation rollers, said rollers being arranged approximately according to the profile of the opening 9.

It should also be noted that the bag dispenser in a manner known per se could be equipped with an arrangement of photoelectric cells to detect the position of the opening of a next bag with respect to the opening 9 in the support plate 2 and for a possible brake electric of at least one of the guide rollers 20, 21, 11, and / or to provide the cash register with a signal indicating that a bag has been removed and that, if so, a charge must be made in this bag .

Figure 8 shows another embodiment of the bag dispenser according to the invention.

The dispenser 60 itself in the embodiment described with reference to figures 6 and 7 is placed below  of a box 70 consisting of a back plate 71 and two plates 72 and 73 laterals that are perpendicular or substantially perpendicular to the back plate. In this case plate 71 posterior and the lateral 72 and 73 extend down towards the upper edge of the suitcase 60, but in a modified embodiment, they can also extend, for example, to the ground, along the opposite sides of the suitcase, such that the suitcase is placed inside box 70.

On top of the side plate 72 is provided a fastening element 74 for the suspension of a handle 43 of the bag. At the top of the opposite side plate 73 is provides a corresponding clamping element 75 for the suspension of the second handle 44 of the bag.

The clamping element 74 has substantially the shape of a nutshell or spoon vertically, which seen in The direction of arrow A is concave. This concave shape allows to the client by means of an upward movement place a hand on the concave space and behind the suspended handle of the bag and by a continuous upward movement release the handle of the bag from the clamping element 74. The opposite clamping element 75 is designed in the same way, but inverse with respect to the element 74 clamping, that is, concave, seen in the direction of the arrow B.

These two elements 73 and 74 fit in shape bucket can be arranged in an integrated manner with at least side plates 72 and 73, for example, by casting from an impact proof material. However, these two elements clamping can be constructed as separate parts from of a suitable material and fixedly mounted on the part upper of their respective side plates.

Figure 9 shows another embodiment of the box 70. On the upper edge of the two side plates 92 and 93 two recesses 94, 95 are provided in the form of a spoon or shell nut, respectively, which are concave in the direction of the arrow C, D, respectively, finishing said recesses in both upper corners of each side plate 92 and 93, respectively, in two projections 96, 97 in the form of horn and 98, 99 respectively.  These pairs of projections are used in each case to hold a handle of a bag and recesses 94, 95 provide the user with the possibility, as described with reference to figure 8, of release the handles of the projections.

The bag is made from a sleeve of plastic material and in addition to the known lines of weakening at the edges 40a, 40b, 41a, 41b, by means of which one bag can be separated from the next one, each bag individual has, as also shown in figure 10 with with respect to the bag according to the invention, welded seams 145 such as indicated with xxx on top of handles 43, 44 and a seam 146 welded as indicated with xxx at the bottom of the bag.

The bag according to the invention, figure 10, has a fold width f somewhat larger than the width shown in Figure 1, for example a fold width of approximately 1/3 of the width of bag B.

Figure 11 shows the profile of the bag, by for example the bag 40 in a somewhat extended state, for example, in the section line 147 in figure 10. Each fold 150, 151 in one Bag has two parts 152, 153 and 154, 155 respectively. He inside edge (point) of the fold 150 is shown with 150 'and the inside edge (point) of the fold 151 is shown with 151 '.

The recess in a bag, for example, the bag 40, figure 10, has a depth d which can be, for example, ¼ of the height of the bag. In addition, the width m of the recess 42 in the top, that is, between handles 43, 44, is somewhat smaller than the width n of the recess 42 at its lower edge, for example of 5-6% lower. In addition, the width n at the bottom of the recess 42 is greater than 1/3 of the width of the bag B.

Figure 12 shows in perspective a bag according to the invention, for example the bag 40, in an almost state stretched.

From a point p in seam 146 welded bottom of the bag, figure 10, preferably the point at which the inside edge of the fold coincides with welded seam 146, a part 152 of the fold 150 is folded and welded on the edge of fold or stick itself along a line 156 that extends obliquely upwards, see figure 10, towards the side edge of the bag 40.

From the same point p, the other part 153 of the Fold 150 is also folded and welded on the crease edge or it sticks to itself along a line 157 that also extends obliquely upwards, see figure 10, towards the side edge of the bag 40.

On the other side edge of the bag 40, it is say, with respect to the fold 151, the situation is the same.

From a point p 'in seam 146 welded bottom of the bag, this is shown in figure 10, although not in Figure 11, a part 154 of the fold 151 is folded and welded in the crease edge or sticks itself along a line which also extends obliquely upwards, see figure 10, towards the other side edge of the bag 40.

From the same point p ', the second part 155 of the fold 150 is also folded and welded on the edge of fold or stick itself along a line 158 which also extends obliquely upwards, see figure 10, towards the second side edge of the bag 40.

In this particular embodiment of a bag according to the invention the essential advantage is obtained, specifically that the bag, when placed on a support surface, by example, the support surface 2 in the dispenser, see the Figure 2, and is deployed during the suspension of handles 43, 44 on suitable clamping elements 10, 11, the lower part of the bag will get the same shape as a cardboard box or a bag of paper of the type available in a supermarket, that is, a bag that due to the presence of said seams 156, 157, 158, ... fold welds will be deployed in a rectangular shape in a fold line as indicated with 159a in figure 10 and by a second transverse folding fold line as it is indicated with 159b in figure 11.

Through this you get one more fill simple and better bag compared to material bags of plastic available regularly. The bottom shaped Bag case also allows for better weight distribution of The items in the bag. It should also be noted that the presence of said seams 156, 157, 158 welded folds do not give rise to no substantial local increase in bag thickness when during its manufacture the bag chain is rolled into a roll for use in a bag dispenser according to the invention.

Claims (13)

1. Plastic bag dispenser comprising a box adapted to hold a roll (6) that can freely rotate around an axis horizontally in the box, said roll (6) consisting of a chain of bags with finished folds, joined , successive of a flexible plastic material, each bag being provided with two lateral handles (43, 44) placed on both sides of a central recess (42) in each of the bags (40), said bags being connected by a line separating between the bottom of each bag and the handles of the next bag in the chain, and in which the dispenser is designed with an outlet opening for said bags to be removed from the dispenser, said exit hole being formed for said bags by an elongated opening (9) that extends substantially in the axial direction of the roll (6), as well as fastening elements (10, 11) adapted to allow the suspension of the two handles of a bag removed of said bags, and means are provided for controlling the movement of said bags, characterized in that - an upper side of the box is formed by a substantially horizontal support plate (2) with an edge (2a) front and a rear edge (2b), and the exit hole is provided on the upper side of the box, - the means to control the movement of said bags are provided below the support plate (2) in such a way that the head handles of the individual bags appear through the opening at the ends of said opening Y - the fasteners (10, 11) are placed above each end of the opening (9) of the plate (2) support. 2. Bag dispenser according to claim 1, characterized in that the elongated opening (9) is profiled in such a way that it bends inward towards the front edge (2a) of the support plate (2) and because the support plate has a central lobe (33), in the form of a substantially circular arc facing the rear edge (2b) of the support plate, and because the control means below the support plate (2) are formed by at least one roller ( 22) which is parallel to the axis of the bag roll and the support plate, said roller being displaced in a direction towards the front edge (2a) of the support plate (2) with respect to the longitudinal axis of the opening. 3. Bag dispenser according to claim 2, characterized in that the control means are a plurality of counter-rotating rollers (20, 21, 22), preferably coated with friction material and touching each other in pairs along generators, said rollers being seated so that they can rotate freely on two end tabs (3, 4) below the support plate (2). 4. Bag dispenser according to claim 2, characterized in that - the box (60) is substantially in the form of a suitcase with a lower part (61) and with a cover (62), - because one side of the bottom is a part of said substantially horizontal support plate (2), - because said elongated opening (9) is provided along the longitudinal edges of said one side from the bottom of the suitcase and the cover (62), - because a tree (5) of the roll (6) of bags of plastic and at least one of said at least one roller (20, 21) parallel to it are rotatably seated on the walls of end of the lower part (61) of the suitcase, - because on the inside of the cover (62) with respect to the inner compartment of the box (60) it is mounted another roller (22) rotating said rollers, said other being roller parallel to said shaft (5) and the first roller mentioned of said rollers (20, 21), and - because pressure springs (65) press the last roller (22) in a direction away from the cover (22) in contact with the rollers (20, 21) remaining in part (61) bottom of the suitcase when the cover is closed. 5. Bag dispenser according to any of the preceding claims, characterized in that the fastening elements (10, 11) are placed substantially above each end of the opening (9) of the support plate (2). 6. Bag dispenser according to claim 5, characterized in that two substantially vertical plates, substantially mutually parallel, are provided above said bag dispenser box and substantially above the box end surfaces. plates together with a substantially vertical back plate (71) a second box (70) adapted to accommodate at least a top part of the bag dispenser box (60), because said two plates (74, 75) each support each in its upper part one of said fastener elements (74, 75) for the suspension of each of its bag handles (43, 44), and because each fastener element (74, 75) seen from the outside and in the direction ( arrow A, arrow B) towards the inside of the box is concave. 7. Bag dispenser according to claim 5, characterized in that a profiled plate (7) is provided above the support plate (2), a part (7a) of which extends towards the front edge (2a) of the support plate (2), and because said fastening elements (10, 11) are mounted on the top of this plate (7) and are placed above the area of the support plate (2) between the opening ( 9) and the front edge (2a) of the support plate. 8. Bag dispenser according to claim 7, characterized in that each of said fastening elements (10, 11) is formed by a support arm (12) that can be mounted on the profiled plate (7) and by two mutually connected branches articulated and connected with one end (16) of the support arm (12) separated from the profiled plate (7), said branches forming an annular handle, and because at the end (16) of the support arm (12) and at the corresponding end of at least one of the two branches (14, 15), spring means are provided which elastically press the two branches together. 9. Bag dispenser according to claim 4, characterized in that the box (60) has means for detachably suspending the box (60) on a vertical wall, and that each of said fastening elements (10, 11) consists of two mutually articulating branches (14, 15) that together form an annular handle, one of said branches (14) is fixedly mounted on the wall, and the other of said branches (15) is previously tensioned by means of spring means to lean in one direction towards said one of said branches (14) to close the annular handle. 10. Bag dispenser according to claim 8 or 9, characterized in that the largest cross-sectional dimension of the clamping element (10, 11) from the outer side of one of said branches (10) to the opposite outer side of the other of said Branches (11) is larger than the largest dimension of the hole in the handle of the bag. 11. Bag dispenser according to any of the preceding claims containing a plastic bag, plastic bag that is part of said material bag chain flexible plastic, with folds, finished, joined successively, presented said bag said two lateral handles (43, 44) placed on both sides of the central recess (42) in the bag (40), being connected said bag in the bag chain with the next bag by a line (40a, 40b) of separation between a welded seam bottom of the bag and the handles of the bag (41) next, characterized in that the folds (50, 51) of the bag each have a width (f) of approximately 1/3 of the width of the bag (B), because the recess (42) has a depth (d) about ¼ of the height dimension of the bag, because the recess (42) in its lower edge has a width (n) greater than the width (m) at the top of the recess (42) between the handles (43, 44), because the width (m) at the bottom of the recess (42) is greater than 1/3 of the width (B) of the bag, and because the parts (52, 53; 54, 55) of the two Bag folds are folded and welded or glued on a seam (56, 57, 58) oblique, which extends obliquely towards top from a point (p, p ') in the seam (46) welded bottom towards a corresponding side edge of the bag. 12. Bag dispenser according to claim 11, characterized in that the point (p, p ') in the lower welded seam (46) of the bag, from which each oblique seam (56, 57, 58) obliquely extends upwardly towards A corresponding side edge of the bag is placed substantially where a line (50 ', 51') of the innermost edge of each fold coincides with the bottom welded seam (46). 13. Bag dispenser according to claim 12, characterized in that each oblique seam (56, 57, 58) extends at an angle of approximately 45 ° with respect to the bottom welded seam (46).