MXPA97005394A

MXPA97005394A - Dispenser for plastic bags and a plastic bag for use in such dispensa

Info

Publication number: MXPA97005394A
Application number: MXPA/A/1997/005394A
Authority: MX
Inventors: Marius Tryk Johan
Original assignee: Marius Tryk Johan
Priority date: 1995-01-16
Filing date: 1997-07-16
Publication date: 1998-02-01

Abstract

The dispenser comprises a comparatively horizontal support plate, below which is placed a roll of coherent spliced bags and of the type having side handles. Guide rollers guide the front pouch towards an elongated opening, preferably arched in the support plate. On the support plate there is placed a specially shaped plate, which in its upper part carries two suspensors for the suspension of a carrying bag in a position for use on the supporting plate. When a bag is pulled through the opening the handles of the next bag reach the opening, where they are ready to take out the next bag. Each individual plastic bag has been designed so that after it has been removed from the dispenser it is fully deployed in the bottom, which acquires the same shape as a cardboard box or carrying bag.

Description

DISPENSER FOR PLASTIC BAGS AND A PLASTIC BAG FOR USE IN SUCH DISPENSER Descriptive memory The present invention relates to a plastic bag dispenser of the type comprising a box conditioned to contain a roll that freely rotates horizontally in the box; roll that consists of a string of finished bags, spliced in a continuous, flexible plastic material; each bag being provided with two lateral handles placed on each side of a recess in the bag; said bags being connected by a line of separation between the bottom of a bag and the handles of said bag and wherein the upper side of the box is constituted by a substantially horizontal box support plate with a leading edge and a trailing edge and designed with an exit opening for each of the bags that are taken out of the dispenser, as well as devices conditioned to allow two handles to be suspended from the bag taken out. An arrangement of this type for dispensing plastic bags, one by one, has been disclosed by Patent Application DK 1620/88, corresponding to EP-A-286 498. Fig. 1 of this publication also shows rolled strings of continuous plastic bags of the type that have side handles. This known arrangement, in which, under a counter of a cash register, two continuous rolls of plastic bags have been arranged, has two bag exits, each with a serrated opening, through which the bag is removed and released from the next bag. One drawback of this solution is that the bag that the customer takes out, appears stationary, forcing the customer to smooth it before opening it. At the exit, for example from a supermarket, there is usually at least one cashier's desk, said cashier's desk includes a rolling belt on which the customer places his merchandise, the cash register itself with a price reader and a strap. of exit, a ramp or simply an inn as in the aforementioned publication. Frequently the carry bags (perhaps against payment) are delivered by the staff, after which the customer has to take charge of the bag himself and fill it with his merchandise. These different operations can be time consuming, both for the staff of the inn and for the client. EP-A2-0381 914 describes an automatic bag dispenser placed at the outlet end of the counter, in which a complicated mechanism with devices for the automatic opening of the plastic bags that come out of a rolled sack of plastic bags of the type described above and that has bars that are first inserted inside the handle of the bag and then move to separate the bag from the next bag and to open the handles of that bag and keep the bag open, ready for use at end of the inn. A drawback of this known system is that, the required mechanism is quite complicated, which of course means a comparatively high cost per unit; which is why it is presumably more suitable for larger stores than for smaller ones, in which there may be only one, two or three boxes of payment. SE-B-351 559 discloses a plastic bag dispenser, in which the plastic bags are connected at a longitudinal edge and at the top are provided with oblong openings, which the customer can use to carry the bag. The bag that comes out of the bag string is manually removed and placed in an upright position in a box-type exit space, after which the two handles of the bag are rolled over two projections on top of the box. so that the bag is held upright and open inside the box. French Patent No. 2 558 704 discloses in a device for dispensing bags of flexible materialSDI. , in particular bags with shandles that are torn off from a roll. This device has a number of suspensors that the user can use for the suspension of a plastic bag, which the device, by means of blown air, keeps in open condition. A drawback of such a device will be appreciated if the space required is taken into account, both behind the delivery desk of the goods and above this counter and consing that at least some of these hangers are presented on the output sof the device . According to the invention, a plastic bag dispenser is distinguished from the type indicated by way of introduction, in that the outlet opening for the bags is formed by an elongated opening which extends mainly in the axial direction of the roll and which below the support plate devices have been installed to control the movement of a bag that is being removed, so that the handles of the individual bags will be the first to appear through the opening, at the ends of that. A plastic bag dispenser of this type offers a number of advantages. As will be seen in detail based on the detailed description, the box with the roll of bags disposed therein, can form a separate unit, which can be made interchangeable so that the staff, when a roll has been spent, can quickly change the box for a new box with a roll of bags. The bags are removed one by one by their handles through the opening and can be placed immediately on the support plate. The controlled movement of the bag that is taken out has the effect that the bag does not go unnoticed and consequently it is easier to put it into use. According to a preferred embodiment, the plastic bag dispenser is characterized in that the elongated opening is profiled in such a way that it curves inward towards the leading edge of the support plate and because it has a central lobe basically in the shape of an arch, looking towards the back edge of the support plate; and in that the control devices under the support plate are constituted by at least one roller that is parallel to the axis of the roll of bags and the support plate; and in that said roller is displaced from the roll of bags in the direction towards the leading edge of the support plate in relation to the longitudinal axis of the opening. In this embodiment, the bag that is to be pulled out through the opening in the support plate is controlled by the roller, thereby preventing tampering; and that in view of the fact that the roller is placed closer to the front edge of the support plate than the opening itself, the lobe when the bag is taken out will engage the central opening of the following bag, whereby the bag which is going to take off is separated, under continuous shot, from the following bag. Simultaneously, the special profiling of the opening of the support plate has the effect that the lateral edges of the bag are distributed evenly towards the ends of the opening of the support plate. According to yet another preferred embodiment, the plastic bag dispenser is characterized in that the control devices are a number of rollers that rotate in counter-rotation, preferably coated with a friction material and that are touched in pairs with each other. along their generatrices, said rollers resting freely, on two end flanges below the support plate. The counter-rotating rollers ensure even more precise control of the movement of the bag. Thanks to these rollers and the friction effect obtained by their friction material, it turns out that the bag can be pulled out evenly from the dispenser by simply pulling a handle of the bag. According to yet another embodiment of the invention, the bag dispenser according to the invention is characterized in that the box is substantially in the form of a suitcase with a bottom part and a lid; because one of the sides of the bottom body is a part of the substantially horizontal support plate; because the elongated cut is positioned along the longitudinal edges of said one side of the bottom body of the suitcase and the lid; because the axis of the roll of plastic bags and together the rollers parallel to the roll rest pivotally on the walls of the bottom body of the suitcase; because on the inner side of the lid, towards the inside of the compartment of the box, a roller is mounted, said roller being parallel with the axis and the rollers; and in that said pressure springs press the latter roller in a direction away from the lid, so that it makes contact with the remaining rollers in the bottom body of the case when the lid is closed. This execution makes it particularly easy for the store staff to open a new roll of plastic bags in the box after opening the lid and manually guide the handles of the bag that is in the first place of the roll upwards and place them on the roll. the opening, then closing the lid again. In addition to the previously mentioned demotic operations, (the staff of the inn distributes bags manually or the customer takes a carry bag himself from a delivery close to the cash register) it is also annoying for the customer that the carry bag should it is usually kept open with one hand and that the goods, particularly foodstuffs that are wrapped in a thin plastic film, do not slide easily into the carrying bag. By passing each of the handles of the bag on a hanger, the customer can easily use both hands to fill the bag with goods, since the bag is kept open. According to another embodiment of the invention, the plastic bag dispenser is characterized in that a profiled plate is placed on the support plate, a part of which protrudes towards the leading edge of the support plate and that said hangers are mounted on top. of this plate and are positioned on the area of the support plate between its opening and its leading edge. The advantage of such a profiled plate that supports the suspensors, is that the customer who takes out a bag is obliged to do so in an upward direction and towards himself, which makes the separation of the bag from the next bag easy and even. The suspenders are preferably placed and substantially on one end of the opening of the support plate.

However, it can be difficult for the customer to release the handles of a full and very heavy carry bag from such bag suspension devices. In view of this, a preferred embodiment of the dispenser, according to the invention, is characterized in that each hanger is formed by a support arm mountable on the plate and two branches connected to each other hingedly and connected to the end of the support arm that looks in the opposite direction to the iron; and because the branches form an annular suspensor; and because at the end of the support arm and at the corresponding end of at least one of the two branches have been placed spring devices that tend to cause the two branches to meet, but which may yield to allow the two branches lower to give free pass to a hand and to the corresponding handles of the bag, during the lifting movement of the bag from the support plate. In this execution the client no longer needs to try to free, from the suspenders, the handles of a full and heavy carry bag. The client only has to introduce his hand, or hands, inside the handles and lift the bag. The two branches of the suspender will then open and leave a free pass for the hand, or hands, and will automatically return to a closed position in which the two branches again form an annular suspender.

According to yet another embodiment of the invention, the plastic bag dispenser can be characterized in that the box has devices for releasable suspension of the bag, placed on a vertical wall and in which each hanger is composed of two branches articulatedly connected to each other, which in Together they form an annular suspensor, in which one branch thereof is mounted fixedly on the wall and the other branch, by means of spring devices is pre-loaded to dump towards said first branch for the closing of the annular suspensor. It is advantageous that the largest cross-sectional dimension of the suspension from the outside of a branch to the opposite outside of the second branch is larger than the larger dimension of the opening in the handle of the bag. The invention also relates to a plastic bag to be used in the plastic bag dispenser according to the invention. Such a plastic bag, which is part of a continuous string of finished spliced bags of plastic material, in which said plastic bags have two laterally arranged handles placed on each side of a central notch in the bag and in which the bags are in the bag. connected a bag with the other bag by a line of separation between the bottom welded seam of that bag and the handle of said bag; and because according to the invention it is characterized in that each of the splices of the bags has a width (f) of approximately 1/3 of the width of the bag (B), the recesses having a depth (d) of about 1/4 of the height dimension of the bags; and in that the recess in its lower edge has a width (n) greater than the width (m) in the upper part of the recess between the handles; and because the width (n) at the bottom of the notch is greater than 1/3 the width (B) of the bag, and the parts of the two bag joints are each folded and welded or glued along the length of the bag. the fold line generated through a line that, from a point in the welded bottom seam, extends obliquely upwards to the side edge. The advantage of such a plastic bag is that, after removing the bag from the dispenser, it can be easily suspended from the two handles on the hangers and it can easily be folded completely out at the bottom, taking the bottom in the shape of a box of cardboard or a paper carrying bag, which makes it easier for the customer to fill the bag with merchandise. The invention will now be explained in detail with reference to the schematic drawings, which show an exemplary embodiment of the plastic bag dispenser according to the invention and wherein: Fig. 1 is a perspective view of fundamental parts of the bag dispenser plastic according to the invention; Fig. 2 shows the plastic bag dispenser according to Fig. 1, viewed from the end; Fig. 3 is a partial top view of the dispensing mechanism shown in Fig. 1; Fig. 4 is a sectional view of a string of spliced continuous bags; Figs. 5a-5d illustrate the use of the bag dispenser, from the moment a bag is removed until the moment when the bag is filled with merchandise; Figs. 6 and 7 are perspective views of a case similar to a suitcase with the lid closed and open respectively; Fig. 8 shows another embodiment of a bag dispenser according to the invention; Fig. 9 shows another embodiment of a part of the dispenser shown in Fig. 8; Fig. 10 shows a detailed embodiment of a bag according to the invention: Fig. 11 shows - along the cut line 147 of Fig. 10 - the profile of the bag in a somewhat distended condition; and Fig. 12 is a perspective view of the bag according to the invention, in almost entirely distended condition. Fig. 1 shows in perspective and viewed from above a part of the bag dispenser according to the invention. In Fig. 1 the cabinet of plate material, eg metal, in which the bag dispenser is incorporated, has been omitted for clarity. This cabinet is shown with 1 in Fig. 2. A support plate 2, for example rectangular, which in a ready-to-use position (Fig. 2) is basically horizontal, bears on its lower face two parallel vertical flanges 3, 4 each. Between these two flanges 3 and 4 there is a detachable support shaft 5, for a roll of plastic bags of the type described above, in a well-known manner. The axis 5 extends parallel to the plate 2 and is rotatable with respect to the flanges 3 and 4. Above the support plate 2 there is a specially shaped plate 7 which can be part of the cabinet 1 of the bag dispenser, see FIG. 2. As can be seen in Fig. 2, which represents a construction according to Fig. 1 seen from one end, the plate 7 has practically an S-shape. The purpose of this particular design of the plate 8 will be explained, Next, in detail. In the support plate 2 and in the profiled plate 7, an opening 9 is provided, the particular shape of which is shown in more detail in FIG. 3. In the upper part of the plate 7 there are 2 suspenders 10 and 11 spaced appropriately above each other. the support plate 2. Fig. 2 shows the device shown in FIG.

Fig. 1, seen from the end. Under the support plate 2, three rollers 20, 21 and 22 are arranged. These rollers are mounted rotatably free in relation to the flanges 3 and 4 and extend parallel to the support plate 2 and to the axis of the support plate 2. support 5 of the roll of plastic bags 6. The three rollers 20, 21 and 22 are preferably coated with a layer of friction material, for example rubber. Two springs 23 and 24 between the stops 25 and 26 respectively on the flanges and the axes of the respective rollers 21 and 22 respectively force the rollers 20, but they are, however, sufficiently elastic to introduce the starting bag of a roll of bags 6 between the two rollers 21 and 22 in the sequence shown in Fig. 2 to allow the two rollers 21 and 22 to be slightly pressed apart from the roller 20. Once this bag has been placed between the rollers, the springs 23 and 24 will again press the two rollers 21 and 22 against their support against the roller 20, whereby the bag is tightened between the rollers and guided by them. The respective directions of rotation of the rollers 20, 21 and 22 are indicated by the arrows. Fig. 3 shows the device of Fig. 1 seen from above. However, for greater clarity of the profiled plate 7 and the two suspensors 10 and 11 have been omitted in Fig. 3. Also, for clarity, what is indicated by the dotted line has been omitted with respect to the parts of the rollers 20 , 21 and 22 which in the assembly of Fig. 2 are located below the plate 2. Fig. 3 therefore shows the support plate 2, the two flanges 3 and 4, the opening 9, the three rollers 20 , 21 and 22 with the corresponding stops 25, 26 and the springs 23, 24; the stops and springs on the right side of Fig. 3 having the same design, for which no numbers have been assigned; the roll of plastic bags 6 located below the support plate 2 and the rollers 20, 21 and 22.

The double arrows to the left and right hand of Fig. 3 indicate the effect of the aforementioned springs. The opening 9 in the above embodiment shown in Figs. 1 and 3 is substantially the shape of an anchor nail, that is, like the leaf of a Roman ax. One of the edges 30 of the opening will have a circular profile, while the opposite edge of the opening has a profile that is composed of three arc-shaped parts, namely two outer sections 31 and 32 and a central section 33 in shape of Arc. The central part 33 forms a lobe pointing towards the edge 30 of the opening. It should be noted that the profiled plate shown in Fig. 1, a part of which 7a is placed horizontally on top of the support plate 2, is also provided with the same type of opening. Referring again to Fig. 1 and in particular to Fig. 2, the two suspenders 10 and 11 are supported by the respective support arms 12 and 13 which have been fixedly mounted on the plate 7, at its upper edge and at a convenient distance on the support plate 2. Each hanger 10, 11 is composed of two branches 14 and 15 articulated on their respective support arms 12 and 13 at a joint connection point 16. By means of spring devices, not shown that have been constructed incorporated in the branches 14, 15 and in the associated arm supports 12, 13, these two branches 14, 15 - for the purpose that follows - can be opened in the opposite direction one of the other against the action of the spring devices and, under the force of the spring means, again tighten against each other. This possibility of mutual movement of the two branches 14 and 15 of each hanger is indicated by the double arrow in Fig. 2 Fig. 4 shows schematically a part of a string of so-called spliced bags 40, 41 ... Such plastic bags, for example polyethylene or the like, are made in a widely known manner, so that each bag is provided with a recess 42 and is only bound with the following bag in the edge areas 40a, 40b, 41a, 41b, etc. The notch 42 in the individual bag is wide enough to offer, once the bag is separated from the next, two handles 43, 44 that the customer can use to carry the bag. Fig. 5 illustrates the use of the bag removed from the device. Fig. 5a shows that the bag has been removed from the device and is ready to be placed vertically. Fig. 5b shows that the handles of the bag 43 and 44 are now at the level of the hangers. Fig. 5c shows that now the handles 43 and 44 have been turned over their respective suspenders, the bag is unfolded and opened. Fig. 5d shows that the customer, now using both hands, can fill the bag with merchandise. Figs. 6 and 7 show another embodiment, in which the box has a shape similar to a suitcase 60 with a bottom body of the suitcase 61 and a cover 62. For clarity, the end walls of the bottom body of the suitcase are not shown in Fig. 6 and Fig. 7 only shows the end wall 64 farthest from the observer.

The bottom body of the case 61 houses the roll of bags 6 on its support axis 7 as well as the two rollers 20, 21 parallel to this axis and preferably coated with a layer of friction material. As will be seen in Fig. 7, the inner face of the lid 62 supports a roller 22 parallel with the axis 5 of the roll of bags, which roller can also carry a coating of friction material and which, by means of the springs 65 It is pre-loaded in the opposite direction to the lid 62. In Fig. 7 the lid 62 is open and the staff can easily introduce a new roll and place the handles of the first roll bag on the longitudinal edge of the bottom body of the roll. the case 61 and the cover 62 respectively, after which the lid is closed, see Fig. 6. In this position the rollers 20, 21, 22 will be in contact in pairs (20, 22; 21, 22) as long of its generatrix and therefore are in engagement with the bag. For clarity, the space between the rollers 20 and 22 and between the rollers 21 and 22, respectively, has been shown somewhat larger than it will normally be. In fact these rollers will be in contact in pairs, with each other, as was said before. Such box 60, similar to a suitcase, can be equipped with devices (not shown) for the suspension of the box on a wall, preferably under two accompanying bag hangers. As for these suspensors, it should be noted that their largest transverse dimension, from the outer side of a branch to the opposite outer side of the second branch, should be greater than the maximum dimension of the opening in the handle of the bag. This prevents the handles from being advanced downstream of the support arms 12 of the hangers. If the dispenser is of the embodiment in which a suitcase-like box is used, the bag hangers can advantageously be provided so that one branch thereof is fixedly connected to the wall supporting the box, while only the other Branch, which faces away from the wall, is angularly movable and is pre-loaded in the direction of the fixedly mounted branch. The operation of the bag dispenser described herein will now be explained in detail. It is assumed that the dispenser is placed in the cash register at a supermarket or similar store. The staff has placed a roll of 6 bags in the device and has inserted the handles of the first bag between the rollers 20, 21, 22, so that the handles of the bag are accessible just above the opening 9. A customer who want to take a bag from the dispenser has only to pull one of the handles upwards with respect to the device. The special shape of the profile plate 7 (see Fig. 2) forces the customer to pull the bag (one or both handles) obliquely upwards in the direction indicated by the arrow P, or slightly away from the device. During this movement the lobe 33 enters the recess 42 of the next bag, which stops the next bag while the bag removed is separated from the handle of the next bag, which at this time has already been inserted between the rolls 20, 21, 22 and is now ready to be taken out of the opening 9. The particular shape of the opening 9 of the dispenser with respect to the straight rollers 20, 21 and the advantageous positioning of the rollers with respect to the opening of the dispenser 9 makes the bags are distributed evenly over the entire extension of this opening of the dispenser and causes the handles of the bag to automatically arrange themselves at the ends of this opening, although in fact only one handle of the bag is pulled. When a bag has been removed from the dispenser, it can be used as already explained with reference to Fig.

. While the bag is empty it is very easy for the customer to turn the handles 43, 44 of the bag over the hangers 10 and 11, see Fig. 5c. If the bag has been filled, it may however be difficult to turn back the handles of the bag 43, 44 to remove them from the hangers 10 and 11. It is therefore useful, according to the invention, that the hangers 10 and 11 , as already described, are designed with spring devices. The client should not try to flip back the handles, he only needs to put his hands under the handles of the bag (Fig. 56d) and lift the bag. Then the hands will pass freely between the two branches 14, 15, forcing them to open and then, due to the spring devices of the hangers they will return them to their normal position (closed branches 14, 15). As mentioned above, the box comprising the support plate 2, the flanges 3, 4, the rollers 20, 21, 22 and the remaining parts of the mechanism, including the axis of the bag roll, can be designed as an interchangeable unit in the cabinet 1 of the bag dispenser. This allows staff to keep one or more boxes filled (or re-filled), so that when a roll of bags has been used, the new box with the new roll of bags can be quickly placed in the dispenser. It should be noted that the specially shaped plate 7 does not necessarily have to be S-shaped, as shown in Figs. 1 and 2, in which the lower part 7a of the plate covers the upper face of the support plate 2. The plate 7 can also exit directly from the center of the S-shaped arch downwards to the support plate, provided that the general shape of the plate 7 and the position of the suspenders 10, 11 achieve the effect that the customer is forced to pull the bag upwards in the direction indicated by the arrow P in Fig. 2. It is also possible to make Note that the opening 9 in the support plate 2 does not necessarily have to have the special embodiment shown in Figs. 1 and 3. For example, the opening in the support plate 2 can be only a rectangular opening, while the horizontal part 7a of the plate 7 has a corresponding opening in the manner described in this presentation. It should also be noted that instead of rectilinear guide rollers, two or more pairs of rollers can be used in counter-rotation, those rollers disposing approximately in accordance with the profile of the opening 9. It should also be noted that the bag dispenser in a well-known manner, it can be equipped with a photocell device for determining the opening position of a following bag with respect to the opening 9 in the support plate 2 and for an electric brake of at least one of the guide rolls 20, 21, 22 and / or to deliver to the cash register a signal indicating that a bag has been removed and that, if necessary, a new charge should be placed for this bag. Fig. 8 shows yet another embodiment of the bag dispenser according to the invention. The dispenser 60 itself, in the embodiment described with reference to Figs. 6 and 7 is placed below a box 70 that is composed of a back plate 71 and two side plates 72 and 73 that are perpendicular, or substantially perpendicular, to the back plate. Here the back plate and the side plates 71 and 72 extend downwards towards the upper edge of the case 60, but can also, in a modified embodiment, extend for example to the floor, together with the opposite sides of the case, so that the suitcase will be placed inside the box 70. Above the upper part of the plate 72 is a suspender 74 for suspending a handle 43 of the bag. On top of the opposite side plate 73 a corresponding suspender 75 is placed for the suspension of the second handle 44 of the bag. The suspensor 74 is basically in the form of a standing spoon or coquina shell which, look in the direction of arrow A is concave. This concave shape allows the consumer, by an upward movement, to place one hand in the concave space and behind the suspended bag handle and, by a continuous upward movement, to release the handle of the bag from the hanger 74. The hanger opposite is designed in the same way, but in reverse with respect to the hanger 74, or is concave seen in the direction of the arrow B. These two spoon-shaped hangers 73 and 74 can be executed integrally with at least the side plates 72 and 73, for example when molding them based on an impact resistant material. However, these two suspenders can also be constructed as separate parts from a suitable material and fixedly mounted on the upper part of their respective side plates. Fig. 9 shows yet another embodiment of the box 70.

At the upper edge of the two side plates 92 and 93 there are two scoops in the shape of a spoon or coquina shell 94, 95, respectively, which are concave in the direction of the arrows C and D respectively. These recesses terminate, in the two upper corners of each side plate 92 and 93 respectively, in two chunk shaped protrusions 96, 97 and 98, 99. This pair of protrusions each serves to suspend a handle of a bag and the recesses 94, 95 allow the user, as described with reference to Fig. 8, to release the handles from the protrusions. The bags are made of plastic sleeve and in addition to the well-known lines of weakening at the edges 40a, 40b, 41a and 41b, by means of which a bag can be separated from the next one, in which each individual bag has, as also shown in Fig. 10 with respect to the bag according to the invention, welded seams 145 indicated by xxxx on the top of the handles 43, 44 and a welded seam 146 as indicated by xxxx on the bottom of the bag. The bag in Fig. 10, according to the invention, has a splice width f, somewhat larger than the width shown in Fig. 4, for example a splice width of about 1/3 of the width of the bag B. Fig. 11 shows a profile of the bag, for example of the bag 40, in a somewhat extended condition, for example in the cut line 147 of Fig. 10. Each splice 150, 151 in the bag, has two parts 152, 153 and 154, 155 respectively. The inner edge (point) of the splice 150 is shown as 150 'and the inner edge (point) of the splice 151 is shown as 151 '. The notch in a bag, for example the bag 40 of Fig. 10 has a depth which may be, for example, 1/4 of the height of the bag. On the other hand, the width m of the recess 42 in its upper part, that is between the handles 43, 44, is somewhat smaller than the width n of the recess 42 in its lower edge, for example 5-6% smaller. On the other hand, the width n in the lower part of the recess 42 is greater than 1/3 of the width of the bag B. FIG. 12 shows in perspective a bag according to the invention, for example the bag 40, in almost relaxed position. From the point p on the lower welded seam 146 of the bag (Fig. 10), preferably the point where the inner edge of the splice fits with the welded seam 146, a part 152 of the splice 150 is folded on itself with a edge folded flat or glued on itself along the line 156 that extends obliquely upwards - see Fig. 10 - towards a side edge of the bag 40. From the same point o, the other part 153 of the splice 150 it is folded on itself in the same way and with the fold edge welded to itself along the line 157 which, likewise, extends obliquely upwards - see Fig. 10 - towards the lateral edge of the bag 40. At the edge of the other side of the bag 40, be understood with respect to the splice 151, the situation is the same. From a point p 'on the welded seam 146 of the bag - shown in Fig. 10, but not in Fig. 11 - a part 154 of the splice 151 is folded on itself and the folded edge welded on itself along a line extending obliquely upwards - see Fig. 10 - towards the other side edge of the bag 40. From the same point p ', the second part 155 of the splice 151 is likewise folded on itself and the folded edge is welded to itself along a line 158, which extends, likewise, obliquely upwards - see Fig. 10 - towards the second side edge of the bag 40. In this specific embodiment of a bag , according to the invention, the essential advantage is achieved that, if the bag is placed on the support surface, for example the support surface 2 of the dispenser, see Fig. 2, and unfolds during its suspension of the handles 43, 44 on the appropriate suspensors 10, 11, the bottom of the bag will come to have the shape of a cardboard box or a paper carrying bag of the type obtainable in a supermarket. This means, a bag which, due to the presence of said folded and welded seams 156, 157, 158, will unfold in a rectangular shape along a fold line as indicated by 159a in Fig. 10 and along a second transverse fold line as indicated by 159b in Fig. 11. By this, an easier and better filling of the bag is achieved, in comparison with the commonly available carry bags of plastic material. The bottom of the bag shaped box also allows a better distribution of the weight of the goods in the bag. Furthermore, it should be noted that the presence of the folded and welded seams 156, 157, 158 does not give rise to any substantial local increase in the thickness of the bag, if during its preparation the string of bags is wound on a roll to be used in the dispenser according to the invention.

Claims

RE I V I N D I CAC I ON E S

1. - A plastic bag dispenser, of the type comprising: a box adapted to contain a roll that can rotate freely in horizontal position inside the box; the roll is composed of a continuous string of finished spliced bags, of a flexible plastic material, each bag is provided with two side handles placed on each side of a central notch in the bag; the bags being connected by a line of separation between the bottom of a bag and the handles of the bag; the upper side of the box is formed by a substantially horizontal support plate with a leading edge and a trailing edge, which is designed with an outlet opening for each of the bags removed from the dispenser as well as devices adapted to allow the two-handle suspension of the bag removed; characterized in that: the outlet opening for the bags is formed by an elongated opening extending substantially in the axial direction of the roll; Under the support plate there are provided devices for controlling the movement of a bag that is being pulled out, so that the handles of the individual bags are the first to appear through the opening at the ends thereof.

2. A bag dispenser, according to clause 1, characterized in that the elongated opening is profiled in such a way that it curves inward toward the leading edge of the support plate and has a substantially arc-shaped central lobe facing towards the trailing edge of the support plate; and in that the control devices under the support plate are composed of at least one roller that is parallel to the axis of the roll of bags and with respect to the support plate; the roller is displaced in a direction towards the leading edge of the support plate with respect to the longitudinal axis of the opening.

3. A bag dispenser, according to clause 2, characterized in that the control devices are a number of counter-rotating rollers preferably coated with friction material and that, in pairs, touch each other through their generatrices , resting the rollers freely on two tabs under the support plate.

4. A bag dispenser, according to clause 2, characterized in that: the box is substantially in the form of a suitcase with a bottom part and a lid; a face of the bottom body is a part of the support plate substantially horizontal; the elongated cut is positioned along the longitudinal edges of the face of the bottom body of the suitcase and of the cover; the axis of the roll of plastic bags and of the rollers parallel thereto rest pivotally on the end walls of the bottom body of the suitcase; on the inside face of the lid with respect to the interior compartment of the box there is a rotary roller mounted, the roller being parallel to the axis and the rollers; and in that the pressure springs press the last roller in a direction away from the lid, so that it makes contact with the remaining rollers in the bottom body of the case, when the lid is closed.

5. A bag dispenser, according to any of the preceding clauses, characterized in that the hangers are placed substantially above each end of the opening of the support plate.

6. A bag dispenser, according to clause 5, characterized in that on top of the aforementioned bag dispenser box and substantially above the end surfaces of the box, two substantially parallel, substantially vertical plates are disposed; the plates forming in conjunction with a substantially vertical rear plate a box conditioned to accommodate, at least, the upper part of the bag dispensing box; and because the two plates hold each one in its upper part a hanger for suspension of each of the bag handles; and because each of the suspensors seen from the outer side and in the inward direction of the box, are concave.

7. A bag dispenser, according to clause 5, characterized in that a profiled plate is placed on the support plate, a part of which extends towards the front edge of the support plate and because the suspensors are mounted in the upper part of this plate and are located above the zonza of the support plate between its cut and its leading edge.

8. A bag dispenser, according to clause 7, characterized in that each hanger is formed by a support arm that can be mounted on the iron and two branches hingedly connected to each other and connected to the end of the supporting arm facing in the direction opposite the plate, in which the branches form an annular suspensor; and in that at the end of the supporting arm and at the corresponding end of at least one of the two branches there are placed spring devices which tend to cause the two branches to come together, but which can yield to allow the branches to be open to leave a free pass for a hand and the corresponding handles of the bag during the upward movement to lift the bag from the support plate.

9. A bag dispenser, according to clause 4, characterized in that the box has devices for the detachable suspension of the box on a vertical wall and because each hanger is composed of two hingedly connected branches that together form an annular hanger, of which one branch is fixedly mounted on the wall and whose other branch by means of spring devices is pre-pressed to dump in a direction towards the first branch to close the annular handle. 10.- A bag dispenser, according to the clauses 8 or 9, characterized in that the greater transverse section of the hangers from the outer face of a branch to the outer opposite side of the second branch is greater than the larger dimension of the opening in the handle of the bag. 11. A plastic bag, to be used in a plastic bag dispenser, according to any of the previous clauses, in which the bags are part of a coherent length of finished spliced plastic bags; in which the bag has two laterally arranged handles placed on each side of a central notch in the bag and which in the bag string is connected to another through a line of separation between the welded bottom seam of that bag and the handles from the bag; characterized in that the splices of each bag have a width of approximately 1/3 of the width of the bag; and in that the notch has a depth of about 1/4 of the dimension of the bag; and in that the recess in its lower edge has a width greater than the width of the upper edge of the recess between the handles; and because the width at the bottom of the notch is greater than 1/3 the width of the bag; and in that the parts of the two bag joints are each folded and welded or glued along fold lines generated by a line which, starting from a point in the lower part of the welded seam, extends obliquely upwards of the corresponding lateral edge of the bag. 12. A plastic bag according to clause 11, characterized in that the point at the bottom of the welded seam of the bag, from which each welded seam of folded edge exits obliquely upwards to the corresponding edge, is substantially where the edge more Inside each joint is joined with the lower welded seam. 13. A plastic bag according to clause 12, characterized in that each welded seam with a folded edge extends at an angle of approximately 45 ° with respect to the lower welded seam. SUMMARY The dispenser comprises a comparatively horizontal support plate, below which a roll of coherent spliced bags and of the type having side handles has been placed. Guide rollers guide the front pouch towards an elongated opening, preferably arched in the support plate. On the support plate there is placed a specially shaped plate, which in its upper part carries two suspensors for the suspension of a carrying bag in a position for use on the supporting plate. When a bag is pulled through the opening the handles of the next bag reach the opening, where they are ready to take out the next bag. Each individual plastic bag has been designed so that after it is removed from the dispenser it is fully deployed in the bottom, which acquires the same shape as a cardboard box or paper carry bag.