MX2008006862A - Hinged cap with tamper-evident device - Google Patents

Abstract

Hinged cap (220, 320, 420, 520) with a base (230) and, connected to said base by a hinge, a pivoting lid (240, 340, 440), said base having an outer skirt (231, 331), said lid having a peripheral wall (241, 341), said outer skirt having a depressed area (232) for the finger, and said pivoting top having a detachable tab (245, 345, 445, 545). The outer skirt has a tamper-evident device (234, 334, 434, 534) that takes the form of a raised or depressed part adjacent to said depressed area. This tamper-evident device is preferably a depressed finger hold and is partially covered by a projection (247, 347,447, 547) for gripping the tab.

Description

HINGED COVER PROVISION OF A FRACTURE INDICATOR FIELD OF THE INVENTION The invention relates to the field of closing capsules called "hinged lids" or "hinge plugs" intended to be fixed in containers of the flexible tube, bottle or bottle-tube type. The corresponding hinge plugs, provided with a hinged lid that closes a dispensing orifice, equip containers suitable for storing and distributing fluid, creamy or pasty materials, generally belonging to the cosmetic, food, domestic, pharmaceutical or parapharmaceutical sectors. More particularly, the invention relates to hinge plugs to which it is desired to associate a fracture indicator or an "inviolability" functionality.

BACKGROUND OF THE INVENTION The hinge caps provided with a hinged lid offer the consumer the possibility to manipulate the container with one hand and ensure that the cap is not lost, being able to place it and inadvertently abandon it in any place after having removed it to free the distribution hole. Such plugs developed considerably as soon as it was possible to mold them in one piece, which resulted in REF. : 193574 significantly reduce its manufacturing cost. In addition, these plugs usually have an important diameter, typically identical to that of the container body (or equivalent size thereof) so that they perform a "stand-up" function, ie the container can be placed vertically, head down, and Rest in the corresponding stopper held in closed position. The hinge plugs comprise a base and a hinged lid fixed to this base. The base comprises a substantially flat upper surface provided with a dispensing orifice, an outer skirt that is usually substantially in the extension of the wall of the container body when the cap is fixed in the corresponding container, and fasteners intended to cooperate with the container. corresponding means located in the head of the container. The outer skirt is usually provided with a concavity or hollow area called "finger grip" whose width approaches the width of a thumb and whose height approaches that of the nail of said thumb. For maximum efficiency of the action of the thumb, this cavity is located on the side diametrically opposite the junction between the lid and the base. In fact, the cover is fixed to the base by means of a hinge which is usually located at the periphery of the substantially flat upper surface of the corresponding base. Typically the corresponding base comprises at least a film hinge and at least one tension element subjected to a tension. The tensioning element subjected to a traction during the movement of the lid facilitates the movement thereof, thus the user activates the opening or closing with a simple thumb drive. Thanks to the geometrical configuration of the different elements of the cap and the composition of the constituent materials, when the first opening is made, the effort applied to open the lid is usually more important than later. The plugs provided with a hinged lid present the drawback of not being able to easily provide of systems of inviolability nor of indicator of fracture. A fracture indicator makes it possible to determine immediately and certainly whether the container provided with such a stopper has been the object of a first opening or not. A system of inviolability imposes on the first opening the destruction of an element located appropriately in the closing device to hinder the opening of the container. In the case of traditional threaded closure devices, typically plugs that can be removed from the container by simple unscrewing, it is known to use a circular tamper-evident seal of the type described in US Pat. No. 5,115,932. inviolability system is difficult to transpose to the plugs with hinged lid. The patent US 4 487 324 discloses a hinge plug with a circular inviolability seal attached by detachable lugs to the substantially flat surface of its base and which maintains lateral lugs located on the peripheral edge of the lid. Such a hinge plug is difficult to realize by molding in satisfactory economic conditions. US Pat. No. 6,405,885 discloses a cap with a hinged lid provided with a detachable tab diametrically opposite the hinge, which forms part of the peripheral wall of the lid and extends into the peripheral wall of the base so that it integrates into the lid. a cylindrical envelope common to the base and the lid. The tongue, which is torn by radial centrifugal traction, is maintained by an axial protrusion fixed to the substantially flat surface of the base and positioned as to prohibit any possibility of forming, in this place of the base, the hollow area called "grip for finger "that allows the thumb or other finger to be accommodated when the cap is opened. With the system described in US 6 405 885, the finger grip can only be placed on the lid itself but when opening the lid, its handling is difficult or imposes the creation of a high-height lid (increase in volume and weight of the useless container, unsightly effect, etc.). Other solutions were proposed. The European patent application EP 0 986 501 proposes a hinged lid difficult to block in rotation and provided with a tongue fixed to the lid that has, with respect to the periphery of the lid, a radial shoulder greater than its thickness, which poses great molding difficulties. In US 5 201 540 the lid is provided with a tongue located in the extension of its peripheral edge and whose free end is provided with a protrusion that comes to engage, upon the first closing, in a hole formed in the base. With the tongue provided with a fragile area in the circumferential extension of the peripheral edge of the lid, it is "enough" to press the tongue there to tilt it, a second protrusion coming into engagement in a second hole in the base. Once detached, tilted and maintained in this oblique position, the tongue serves as finger grip. Here the accommodation provided for the thumb or any other finger retains the convex shape of the cylindrical wall constituting the peripheral edge of the lid, which has the effect of offering the user an uncomfortable finger grip. The international patent application WO00 / 76875 presents a detachable tongue positioned as to partially close the hollow housing that serves as a finger grip and whose end opposite the lid is joined to a guarantee seal located in the extension of the outer skirt. This tongue can be molded in one piece either with the lid or with the guarantee seal and thus presents one end attached to the seal or to the lid by means of a fragile zone. But the other end must be soldered after the placement of the tongue, making such a plug is not very economical. In addition, this plug does not present a fracture indicator. The above solutions are difficult to perform under satisfactory economic conditions when a finger grip for the thumb is foreseen, and vice versa, when they allow a large series industrial manufacture under satisfactory economic conditions, they offer a grip for hurtful finger or that to the users they like it little That is why, in practice, up to now, the guarantee of inviolability could be guaranteed correctly only thanks to the use of an outer packaging, for example a heat shrink film that surrounds the outer skirt of the base and at least the periphery of the cover of the hinge plug. However, once the heat shrink film is removed, it leaves no signal so that the container does not have a fracture indicator. The object of the invention is to provide easy-to-make hinged lid plugs which, at least, are provided with a fracture indicator and which, if possible, can also perform a function of guarantee of inviolability.

BRIEF DESCRIPTION OF THE INVENTION A first object according to the invention is a lid with hinge provided with a base and a hinged cover fixed to the corresponding base by a hinge, the corresponding base is provided with a substantially flat surface provided with a dispensing orifice and an external skirt, the corresponding cover is provided with a peripheral wall , the corresponding outer skirt has a hollow area serving as a finger grip, typically positioned so as to be on the side diametrically opposite the hinge and end at the periphery of the substantially flat surface, so that it is located radially backwards with respect to to the peripheral wall of the lid, the corresponding hinged lid is provided with a detachable tongue which, in closed position, covers at least a part and preferably the whole of the corresponding hollow area and which, once detached, makes the area hollow is at least partially accessible. The corresponding outer skirt is also provided with a relief, protruding or hollow, adjacent to the corresponding hollow area and covered at least partially by the corresponding tongue. This relief, easily visible since it is located next to the finger grip and which appears completely only after the detachment of the tongue, acts as a fracture indicator. The corresponding detached tongue is also extended beyond the corresponding hollow area by a boss protrusion. The hinged lid according to the invention has the classic characteristics of a hinged lid: it has a base provided with an orifice and a lid hinged about an axis substantially orthogonal to the axis of the hole. The base is provided with a substantially flat surface, an outer skirt and fastening means on the head of the container, typically screwing means or latching means located on an internal skirt intended to surround the neck of the corresponding container. Advantageously to these fastening means are added non-rotating means such as those described in the patents US 5 046 630 or US 5 560 505. The outer skirt has a hollow area that acts as a finger grip, that is to say, that houses the finger thumb or any other finger to offer non-hurtful support when the lid is opened. Typically this area is located substantially diametrically to the hinge and opens into the periphery of the substantially flat surface of the base so that it lies radially rearward with respect to the peripheral wall of the lid, which facilitates the grip of the corresponding lid with the thumb or another finger. In front of this hollow area, the peripheral edge of the lid itself can have locally a protruding wall in the form of a cap or also preferably an oblique cantilevered wall, with a medium slope. important, typically 60 °, with respect to the plane of the substantially planar surface, the free edge of the corresponding oblique cantilever wall arrives coincident with the edge of the hollow area when the lid is in the closed position in the base. In the latter case, the cantilevered oblique wall completes the hollow area to form an assembly that has the shape of a hollow housing that acts as a finger grip that extends from one part of the boundary between the peripheral wall of the other. the cover and the outer skirt of the base. To open the lid according to the invention when using the container for the first time, the user grasps the tongue and releases it, which releases the hollow area that serves as a finger grip. The tab is attached to the peripheral wall of the lid by means of a narrowed area or preferably by means of detachable "aligned" pins, that is to say located regularly or not along a line segment or a circle arc. Preferably, the tongue intended to cover the finger grip is joined to the peripheral edge of the lid by means of a narrowed area or an "alignment" of detachable lugs extending in the tangential or circumferential direction, perpendicularly to the e e of the lid. Preferably, when the peripheral edge of the lid is provided with a protruding cap-shaped wall or of a cantilevered oblique wall that completes the hollow finger grip area, the tab is at the end of the corresponding cap or the upper part of the corresponding cantilevered wall of the peripheral edge. Such location of the fixation allows preserving the conventional complementary closing means of the lid at the base, which are usually placed to be diametrically opposite to the hinge, one on the inner face of the peripheral edge of the lid, typically on the inside of the lid. the cantilevered oblique wall, and another on the outer wall of a flange formed on the substantially planar surface of the base. In fact, the corresponding tongue does not block the lid in its closed position but, since it at least partially covers the corresponding hollow area, the opening movement is uncomfortable. Preferably the corresponding tongue completely or almost completely covers the hollow area. On the one hand, it protects the hollow area against dirt, contamination, dust deposits that may occur during manufacture and storage of the container provided with the corresponding stopper. On the other hand, with the absence of relief that results from this, the direct grip of the tongue to remove it is more difficult or at least more voluntary. In this general version of the invention the tongue does not meet a true function of guarantee of inviolability but, from the practical point of view, quite effectively prevents the opening, even more when the force required for the first opening is usually more important than after several openings. Associated with a slightly elevated first opening effort, this tongue acts as a discrete signaling panel: it plays the role of a virtual obstacle that prohibits more psychologically than really, unauthorized access to the contents of the container. This function is associated with a product access limitation function that is defined more concisely with the English expression: "access denied". The function "fracture indicator" is fulfilled by a specific relief, protruding or hollow, located on the outer skirt of the base and adjacent to the hollow area. This relief, made when molding the cap, indicates with its simple presence on the outer skirt of the cap and on the side but outside of the finger grip, that the corresponding cap has been manufactured with a tongue that prohibits the unauthorized access to the contents of the cap. container. The "fracture indicator" function can be evidenced by a specific embellishment typically made by printing or molding on one side of the hollow relief or projection substantially parallel to the outer skirt of the base. This function is fulfilled even more when the corresponding relief, or at least a part of the ornament on the corresponding face of the corresponding relief, appears only when the tongue is removed. Having to find the finger grip in order to guarantee the minimum risk of injury of the finger, the corresponding fracture indicator, which is salient or hollow in the external skirt of the base, is advantageously located outside the hollow housing that does the times grip finger but close enough to be easily visible by the user. In all preferred embodiments of the invention the fracture indicator is a hollow housing adjacent to the hollow area which acts as a finger grip and is partially covered by the tongue so that its presence appears only after removing the corresponding tongue. Thus preferably the tongue has to extend beyond the hollow housing and at least partially cover the corresponding fracture indicator. It is possible to refer to the measurement and / or morphology of the fingers, in particular of the thumb, index or middle, to determine whether or not the adjacent hollow housing belongs to the hollow area intended to house the finger to guarantee optimal comfort when opening the lid. In practice, the outer contour of the hollow housing, which acts as a fracture indicator, has to form a projection that clearly stands out from the outer contour of the hollow area, because in principle the latter has a convex shape whose flat projection is similar to a circle, an ellipse or an oval. The corresponding projection must be visible but quite narrow with respect to the fingers. Typically, with the current measurements of the hinged lids, the hollow fracture indicator housing advantageously has a width equal to 10 mm maximum and a length at least equal to 10 mm. Preferably the tongue is joined to the peripheral wall of the lid by means of removable temples whose number and section are defined so that after the break the residual part still attached to the lid is not hurtful. Since the plug is usually made of polypropylene, it is not very difficult to make such pins. In practice, for a plug of 48 mm in diameter and a finger grip that extends for about twenty millimeters in the upper part of the external skirt of the base, it is possible to attach the tab to the lid by means of 5 section pins. between 0.1 mm2 and 0.2 mm2. Preferably, outside this weakened connection zone, the tongue has a free edge all over the rest of its periphery, which must at least locally allow an easy grip of the corresponding tongue. To more easily grasp the tongue with a view to breaking it, it is possible to give it an extension smaller than that of the finger grip, so that the finger or fingernail can be Insert in the residual hollow, grasp the end of the tongue and, pulling outward, impose a bend that tends to break the tabs. Preferably the tongue extends beyond the hollow area serving as finger grip by adding a handle protrusion, so that the opening of the lid is done voluntarily using a means specifically designed for that purpose. Advantageously, similar to the hollow housing adjacent to the hollow area serving as finger grip, this protrusion has an outer contour that is clearly distinguished from the outer contour of the tongue. The corresponding handle protrusion can protrude with respect to the corresponding tongue (radial displacement) or preferably be located in the circumferential extension of the tongue, with a radial shoulder as small as possible typically less than one millimeter. Advantageously, it is also possible to associate the corresponding handle protrusion to the corresponding fracture indicator located outside the finger grip: presented in the form of a hollow housing adjacent to the hollow area acting as a finger grip (but different with respect to it) , it can be at least partially covered with the handle protrusion of the tongue without imposing any radial shoulder between the corresponding protrusion and the corresponding tongue.

The corresponding handle protrusion can be located on the opposite side of the releasable area of the tongue. It can extend in the axial direction, with a small shoulder with respect to the outer skirt of the base, in order to offer a finger grip. When pulling the handle protrusion towards the outside, a moment is imposed on the tongue characterized by a vector perpendicular to the axis of the stopper tending to break the tabs almost simultaneously. Preferably the corresponding handle protrusion is located on one side of the tongue and extends in the orthoradial direction, or laterally because the hinge cover of the lid does not necessarily have an axial symmetry. By pulling the end of the handle protrusion towards the outside, a moment characterized by a vector parallel to the e e of the stopper and tending to easily break the lugs one after the other is imposed. The non-rotating pin closest to the protrusion is subjected to a state of tension that translates substantially into a high cutting effect tending to break it. You can define different pin sections and distances between pins to modulate the effort needed to detach the tongue. For example, it is possible to adapt the section of the pin closest to the end of the handle protrusion to the limit force of the threaded opening because, due to the small length of the lever arm, this pin needs, at equal sections, the greatest breaking effort. The section of each leg, typically comprised between 0.05 and 0.5 mm2, preferably between 0.1 and 0.2 mm2, is defined so that the effort required to break it is between 0.25 and 2.5 daN and preferably between 0.5 and 1.5 daN. Advantageously said ortorradial protuberance covers a hollow also ortorradial attached to the finger grip. Thus, the handle protrusion is in the extension of the tongue or protrudes with respect to the corresponding tongue with a very small radial shoulder. Its grip is facilitated thanks to the hollow housing that partially covers. As indicated above, the corresponding hollow housing can also serve as a fracture indicator. Advantageously, this last version is symmetrical: a lateral handle protrusion is placed on either side of the tongue, which allows right-handed as well as left-handed people to easily break the tongue. In the same way, each hollow protrusion can at least partially cover a hollow housing adjacent to the corresponding hollow area serving as a finger grip. It is also possible to place the detachable pins aligned only between the corresponding handle protuberances and the cover, which allows obtain an intact finger grip, without a sign of pin breakage, ie without any risk of injuring the user's fingers. Advantageously, in a preferred variant of the invention, the function "fracture indicator" is complemented with a function of guarantee of inviolability: the hollow housing that performs the function of fracture indicator and the handle protrusion are provided with complementary means that prevent the untimely opening of the lid. Typically it is a radially protruding spigot which, when hit against the upper edge of the handle protrusion, prevents any untimely movement of opening of the corresponding cover. In fact, in the absence of a spike, the user can, without great difficulty and even if the surface condition of the tongue provides a sufficient coefficient of friction, open the lid by placing his finger on the tongue and imposing a sensibly axial force towards the tongue. the corresponding lid. Preferably, in order to favor locking of the lid, the pin forms a radial projection on the upper part (close to the lid) of the hollow housing that acts as a fracture indicator and the upper edge of the handle protrusion is provided with a notch that , once the end of the pin is locked in the corresponding notch, immobilizes the cover, axially upwards and circumferentially in both directions. As in example 4 below, a hinged lid made of two plastic materials of different colors, one for the lid and the other for the base, advantageously highlights the presence of the inviolability system constituted by the shank and the handle protrusion, the latter having different colors. Of course, the variants can be superimposed, for example by proposing a hinged cover with a symmetrical tongue that covers the hollow area that serves as a finger grip, with lateral handle protrusions located on both sides of the tongue and covering the tongue. at least partially two hollow housings adjacent to the corresponding hollow area and located on either side thereof, with each hollow housing and each handle protrusion provided with complementary means that prevent untimely opening of the cover. The preferred embodiments of the invention set forth in the examples below also relate to the specific characteristics of a hinge cover of the prior art not provided with a fracture indicator. In this prior art hinge cover the external surface of the outer skirt of the base and the outer surface of the peripheral wall of the cover substantially abut a common cylindrical convex envelope surface.

Rather, the lid has a substantially flat surface intended to cover the substantially flat surface of the base and a peripheral wall which is generally located in the axial extension of the outer skirt of the base so that the corresponding peripheral wall and the corresponding outer skirt they have external surfaces that support a common convex envelope surface, typically a circular or elliptical cylindrical surface that also tends to have the general exterior shape of the container body. The fact of placing the peripheral edge and the outer skirt in the prolongation one of the other responds in particular to an aesthetic need, because the closed cap does not present on its surface any roughness and offers a whole aspect that forms body with the container. In general, this uniformity is increased, in harmony with the container body, because the outer envelope surface of the cap is also usually in the extension of the container body. With this same aesthetic objective, the peripheral edge of the lid has, over the hollow area, an oblique cantilevered wall instead of a projecting cap. In order to respect this harmony, the preferred variants of the invention have a tongue whose external surface also extends substantially over the convex wrapping surface common to the outer skirt of the tongue. base and the peripheral edge of the lid. Advantageously the tab is attached to the lid with a series of detachable temples that join it to the upper part of the oblique cantilevered wall. In fact, the tongue can not be placed in the direct axial extension of the open end of the peripheral edge of the lid because, when the latter comes against a wall of the base, a radial shoulder of the tongue would be imposed with respect to the corresponding peripheral edge. with a thickness greater than that of the corresponding peripheral edge and such a radial shoulder would be difficult to perform by molding. In addition, the tongue would protrude radially with respect to the envelope common to the external fault and to the peripheral wall. In addition to the above-mentioned unsightly appearance, such a tongue would also have the disadvantage of increasing the volume of the container and increasing the risks of hooking the tube heads to each other during the numerous manipulations of the tube provided with its hinged lid necessary before it is on the shelves of the distributors (placement in the cardboard boxes sent to the packer, extraction, placement in the packaging lines, etc.). The tongue remains in the lid while it has not been detached to release the hollow area that serves as finger grip. Once detached from the lid, it disappears and is no longer part of the tube environment.

Advantageously it is possible to use this temporary component of the hinged lid, fixed to the tube only before the first use, that is to say during the entire period of sale of the tube. In general, tubes provided with such plugs are placed in the "standing" position on the shelves, that is, the head down while the ornaments are printed on the skirt of the tube so that the user can read them when the tube is upside down. The tab, fixed to the tube only before the first use, can serve as a well-oriented information support for the consumer when it passes in front of the shelves: it is possible to place a logo or a mark, well oriented for example, ie readable when the tube is presented head down. This logo can be made by printing on the tongue or embossing when molding the hinged lid. The hinged lid according to the invention can be made by molding one or more plastic materials belonging more particularly to the group that groups the polyolefins with, in particular, polypropylenes (PP) homopolymers and copolymers, high density polyethylenes (HDPE), polyethylenes linear, polyethylenes and polypropylenes catalyzed by metallocenes, olefinic elastomers as well as thermoplastic elastomers, olefin-based alloys, cycloolefins and finally polymers of plant origin such as polyhydroxyalkanoates.

The invention also relates to containers, such as flexible tubes, provided with hinge closures that are either hinged covers according to the invention or closures made by molding in one piece with the container, which have characteristics identical to those of the hinged lid according to the invention, with a section of the external wall of the container that performs the function of the external wall of the base of the lid.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 illustrates, in perspective, an example of a tube head provided with a hinged lid of the prior art, not provided with a fracture indicator. Figures 2a and 2b illustrate, in perspective (2a) and in section through a diametrical plane (2b), a tube head provided with a first hinge lid according to the invention. Figure 3 illustrates, in perspective, a tube head provided with a second hinged lid according to the invention. Figure 4 illustrates, in perspective, a tube head provided with a third hinge lid according to the invention. Figure 5 illustrates, in perspective, a tube head provided with a fourth hinge lid according to the invention.

Figure 6 illustrates, in perspective, a tube head provided with a fifth hinge lid according to the invention.

DETAILED DESCRIPTION OF THE INVENTION The tube head 100 shown in Figure 1 is attached to the end of a cylindrical skirt 110 and covered by a "classic" hinge cap 120 not provided with a fracture indicator. The hinged lid 120 comprises a base 130 and a lid 140 fixed to said base by a hinge not shown since it is located in a position diametrically opposite to that of the finger grip 132. The base comprises a substantially flat upper surface (here hidden by the lid) provided with a dispensing orifice, an outer skirt 131 which is substantially situated in the extension of the skirt 110 of the tube when the cover is fixed in the tube and fixing elements intended to cooperate with corresponding means located in the head of the container or flexible tube. Typically the lid 140 is provided with a substantially flat surface 143 that covers the substantially flat top surface of the base 130 and a peripheral wall 141. The outer skirt 131 has an outer surface that abuts a circular cylindrical surface. In closed position, the peripheral wall 141 is located in the axial extension of the outer skirt 131 of the base 130. It is slightly frustoconical but with a very small cone opening angle so that, apart from the finger grip 132, this peripheral wall 141 substantially rests on the envelope cylinder of the outer skirt from the base. The envelope cylinder of the outer skirt of the base thus constitutes a convex envelope surface common to the corresponding peripheral wall and to the corresponding outer skirt. The outer skirt 131 has a hollow zone 132 positioned substantially diametrically to the hinge and which opens out at the periphery of the substantially planar surface so that it lies radially rearward with respect to the peripheral wall 141 of the lid. In front of the upper edge 133 of the outer skirt 131 of the base, and at the level of the finger grip 132, the peripheral wall of the lid 141 has an oblique cantilevered edge 142 whose geometry is defined so as to complete the hollow area 132 and facilitate thus the finger grip on the lid without risk of injuring said finger. This pure form, without a protruding cap on the lid, in harmony with the body of the container, has been created by the applicant, associated with the patented CEBALCAP brand. It has a great success with its variants of substantially cylindrical wall bulging (towards the outside or the inside), cylindrical wall of elliptical section, frusto-conical wall (apex towards the inside or outside of the tube).

EXAMPLES Once the tab has been removed, the hinge plugs presented in the following examples have a general appearance similar to that of Figure 1.

EXAMPLE 1 (Figures 2a and 2b) The hinge capsule 220 of this example is provided with a base 230 and a hinged lid 240 provided with a peel tongue 245 whose external surface substantially rests on the cylindrical shell surface common to the outer skirt 231 and to the peripheral wall 241 of the lid 240. In the closed position the tongue 245 covers the hollow finger grip 232. Once the tab has been detached, the corresponding hollow area is fully accessible. The outer skirt 231 of the base 230 is also provided with a fracture indicator which is in the form of a hollow housing 234 located on the side but outside the hollow area 232 which acts as a finger grip. The base 230 comprises a substantially flat surface 233 provided with a dispensing orifice 260, an outer skirt 231 and a skirt fastener 238. The hinge cover 220 is fixed to the neck 215 of the container head by engagement of an annular groove 236 which is adjusted by axial pressure around the annular flange 216 formed in the neck 215. The annular groove is formed in the inner face of the fastening skirt 238. The hollow area 232 which acts as a finger grip is located substantially diametrically to the hinge and opens into the periphery of the substantially flat surface 233 of the base so that it is located radially rearward with respect to the peripheral wall 241 of the lid, which facilitates the grip with a finger of the corresponding lid. Opposite this hollow area the peripheral edge of the lid has a cantilevered oblique wall 242 whose free edge arrives in coincidence with the edge of the hollow zone when the lid is in the closed position in the base. The tongue 245 is attached to the peripheral edge 241 of the lid 240 by peel-off temples 244 located along an arc of a circle. The "alignment" of the pins 244 is perpendicular to the axis of the cover. The tongue 245 is not located in the direct extension of the peripheral edge 241 of the lid: it is fixed to the upper part of the cantilevered wall 242 of the peripheral edge. Such location of the fixation allows to preserve the complementary means for closing the lid at the base located one on the inner side of the peripheral edge of the lid, on the cantilevered oblique face 242, and another on the external wall of the ridge 237 formed on the substantially flat surface 233 of the base 230. To open the lid for the first time the user releases the tongue 245, which releases the hollow area 232 which acts as a finger grip and the adjacent hollow housing 234. The function "fracture indicator" is fulfilled by the hollow housing 234 whose presence appears completely only after removing the tongue. The tab 245 has an outer surface that abuts the cylindrical sheath common to the peripheral wall 241 and the outer skirt 231 of the base. Apart from this fixing area constituted by the lugs 244, the tongue 245 has a free edge in all the rest of its periphery. It is provided on one side with a handle protrusion 247 that does not completely cover the hollow housing 234, which facilitates its grip in order to detach the corresponding tongue. The handle protrusion 247 is substantially present in the circumferential extension of the tongue 245, with a very small radial shoulder of less than one millimeter.

EXAMPLE 2 (Figure 3) The hinged cover 320 of this example is provided with a cover 340. As in the previous example, the tongue 345 has an external surface that rests on the cylindrical sheath common to the peripheral wall 341 of the cover 340 and to the outer skirt 331 of the base 330. The tongue 345 is provided on each side with a protrusion 347 and 347 ', each of these protuberances partially covering a hollow housing 334 and 334'. In addition to its advantageous aesthetic appearance, such a configuration allows both right-handed and left-handed users to easily grasp the tongue 345 and detach it from the lid 340.

EXAMPLE 3 (FIG. 4) The hinge cover 420 of this example is provided with a cover 440 to which a tongue 445 is fixed, which has a shape identical to that of the previous example, that is to say with handle protrusions 447 symmetrically located on a and another part of the tongue, each of the protuberances partially covers a hollow housing 434 that also serves as a fracture indicator. Here the removable temples 449 are located only between the handle protuberances and the cover, which allows to obtain an intact finger grip, without a sign of a broken leg, that is to say without risk of hurt the user's finger.

EXAMPLE 4 (Fig. 5) The hinged lid 520 presented in this example is provided with a fracture indicator 534 which appears completely only after the tongue 545 detaches. This hinged lid also performs a complete function of guarantee of inviolability. In effect, the hollow housing 534 which serves as a fracture indicator is provided with a tang 535 and the handle protrusion 547 is provided with a notch 548. In general, the hinge cover is molded in the "open lid" position and, when closing the cover on the base for the first time, the handle protrusion 547 reaches above the pin and is blocked by the corresponding pin, which prevents rotation of the cover in the opposite direction. To facilitate the passage over the tang 535 of the handle protrusion 547 and its locking at the end of the closing of the cover by elastic recoil as soon as its upper edge has passed the corresponding spike, advantageously the somital wall thereof has in its part high a gentle slope "descendant" towards the top. Thus, in order to favor the locking of the cover 540, the pin 535 protrudes from the hollow housing 534 which It acts as a fracture indicator and the upper edge of the handle protrusion 546 is provided with a notch 548 that locks the end of the shank axially up and circumferentially in both directions. The hinged lid 520 is molded by injection of two plastic materials of different colors, which advantageously highlights the presence of the tang 535 and of the handle protrusion 547. By detaching the tongue 545 the user releases the lid 540 which can rotate in the sense of openness EXAMPLE 5 (Figure 6) The tube of this example is equipped with a hinge plug similar to that of the previous example and provided with a tongue on which an ornament is printed. It comes in the "standing" position as it can be found on store shelves. Thus the hinge cover 620 is presented with the lid down. The tab 645 is fixed to the tube only before the first use and can serve as a well-oriented information holder for the consumer when it passes in front of the shelves: for example it is possible to place a logo 650 oriented so that it can be read correctly when the tube is presented head down. Once the tube is purchased, the user grasps the tongue by the handle protrusion 647 and it releases it releasing the finger grip. Once the tab detached from the lid, the set of the ornaments printed on the tube, particularly those printed on the skirt, are oriented so as to be able to be read correctly when the tube is presented head up. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (14)

1. CLAIMS Having described the invention as above, the contents of the following claims are claimed as property: 1. Hinged lid provided with a base and a hinged lid fito the corresponding base by means of a hinge, the corresponding base is provided with a surface substantially flat provided with a dispensing orifice and an outer skirt, the corresponding cover is provided with a peripheral wall, the corresponding outer skirt has a hollow area that serves as finger grip, typically positioned to be on the side diametrically opposite to the hinge and end at the periphery of the substantially flat surface, so that it is located radially rearward with respect to the corresponding peripheral wall of the lid, the corresponding hinged lid is provided with a detachable tab which, in closed position, covers at least partially the corresponding hollow area and that, once detached, makes the hollow area at least partially accessible, the corresponding outer skirt is also provided with a relief, projection or hollow, adjacent to the corresponding hollow area and covered at least partially by the corresponding tongue, characterized in that the corresponding tongue is prolonged beyond the corresponding hollow area by a knob protrusion.
2. 2. Hinge cover according to claim 1, characterized in that, when the corresponding hinged cover is in the closed position, the corresponding detachable tongue completely or almost completely covers the corresponding hollow area.
3. 3. Hinged lid according to claim 2, characterized in that the corresponding relief is a hollow housing adjacent to the corresponding hollow area which, before the first opening, is at least partially covered by the corresponding handle protrusion of the corresponding one. tongue.
4. Hinged lid according to any of claims 1 to 3, characterized in that the corresponding tongue is joined to the peripheral wall of the corresponding lid by means of detachable temples located along an outline located on the periphery of the lid and that extends in the circumferential direction, perpendicular to the axis of the lid.
5. Hinged lid according to any one of claims 1 to 4, characterized in that the peripheral edge of the lid is provided with a protruding wall in the form of a cap or an oblique cantilevered wall which it completes the corresponding hollow area serving as a finger grip, and in which the tongue goes to the end of the corresponding cap or to the upper part of the corresponding cantilevered wall of the peripheral edge.
6. Hinged lid according to any one of claims 1 to 5, characterized in that the corresponding handle protrusion is situated substantially in the circumferential extension of the tongue, with a radial shoulder as small as possible, typically less than one millimeter.
7. Hinged lid according to claim 6, characterized in that a lateral handle protrusion is located on both sides of the tongue.
8. Hinged lid according to claim 7, characterized in that each handle protrusion at least partially covers a hollow housing adjacent to the corresponding hollow area serving as a finger grip.
9. Hinged lid according to claim 7 or 8, characterized in that the corresponding tongue is joined to the corresponding lid only by detached lugs located between the corresponding handle protuberances and the corresponding lid.
10. 10. Hinged lid according to any of claims 2 to 9, characterized in that the corresponding hollow housing that serves as a fracture indicator and the corresponding handle protrusion are provided with complementary means that prevent the untimely opening of the lid, typically a spike radially protruding, which hits against the upper edge of the handle protrusion.
11. Hinged lid according to claim 10, characterized in that the upper edge of the handle protrusion is provided with a notch which, once the end of the pin is locked in the corresponding notch, immobilizes the cover, axially upwards and circumferentially in both directions.
12. Hinged lid according to any of claims 1 to 11, characterized in that the external surface of the corresponding outer skirt, the external surface of the corresponding peripheral wall and the external surface of the corresponding tongue substantially rest on a convex envelope surface Commonly cylindrical.
13. 13. Hinged lid according to any of claims 1 to 12, characterized in that the corresponding tongue is provided with a legible ornament when the tube is presented head down.
14. 14. A particular container intended to store and distribute a fluid, creamy or pasty material, typically belonging to the cosmetic, food, domestic, pharmaceutical or parapharmaceutical sectors, characterized in that it is provided with a hinged cover according to any of claims 1 to 13 or of a hinge closure molded in one piece with the container and that It has the same characteristics as the corresponding hinged cover, an external wall of the container, performing the function of the corresponding external skirt of the corresponding base.