FR2504892A1 - Tamper resistant cardboard package - has tongue and slot closing lock necessitating partial destruction to obtain access to contents - Google Patents

Abstract

The security package is of cardboard with panels, hinged by bend lines. It has an engagement strip hinged line on a panel forming the cover including a mating slot and tongue. The tongue (50) has a hook, so that the slot (40) and tongue ensures the locking of the package when it is closed. To gain access to the products, at least partial destruction is necessary. A perforated line goes round either tongue or slot to allow it to be torn off.

Description

 The present invention relates to cardboard packaging, formed using blanks composed of different panels hinged two by two by fold lines.

 The present invention relates more particularly to a packaging of the aforementioned kind, inviolable.

 We already know many cardboard packages, in particular, of rectangular shape, formed using blanks comprising four side panels of generally quadrangular shape and in longitudinal alignment, articulated two by two by first transverse fold lines and each extended , on one side, beyond a second fold line perpendicular to said first transverse fold lines, forming the lower edge of each of the four side panels when the blank is assembled, by flaps intended to form, in cooperation, the bottom of the package.

 Conventionally, two non-adjacent side panels extend on the other side beyond a third fold line, parallel to said second fold lines and forming the upper edge of the two side panels in question, of so as to form two dust-proof closure flaps when these are inclined 900, towards the inside of the package, with respect to the corresponding sides. Another panel called the first side panel, included between the two non-adjacent side panels above, also extends beyond a third fold line so as to form a cover flap, itself extended beyond a fourth fold line, parallel to said third line, by a strip capable of come into engagement with said dustproof closure flaps and a second side panel opposite to said first panel when the package is assembled.

 In order to ensure the correct closure of the latter, the engagement strip and said second panel are frequently provided with slot and tongue intended to cooperate by respective engagement when the packaging is closed, to ensure the retention of the cover flap .

 The tongues are thus conventionally formed by cutting a structure of general "T" shape comprising a central element and two lateral fins whose respective edges, on the side of the base of the central element are aligned.

 When the tongue is initially inserted into the corresponding slot of the engagement strip, the cover flap is in principle retained, the edges of the two fins abutting against said slot when a user pulls on said stretching cover flap to open the package.

The Applicant has found, however, that such tabs do not make it possible to obtain a tamper properly speaking, and therefore a satisfactory locking effect of the packaging. By packaging having a satisfactory locking effect is meant, packaging such as this being initially closed, it is necessary to destroy at least an externally visible part thereof in order to access the products which it contains
We can easily understand the interest of such a locking effect for the packaging used, in particular for chocolate and confectionery.

 Indeed, when the opening force is applied vigorously, on the cover flap of conventional packaging, there is frequently a deformation of the slot and the fins of the locking tab allowing said tab to come out of the slot and thus the manipulator to open the package without apparent damage to it.

 In addition, even in the case where said fins are torn, it is possible to open the packaging without any apparent external damage, since it is subsequently possible to close the packaging by reintroducing the central element of the tongue. locking in the slot, the packaging thus fully recovering its initial external appearance.

 Thus, when it proves essential to ensure the locking of such packages, we have adopted the habit of securing the cover flap to the various side panels using adhesive strips.

However, this operation is relatively long and does not ensure a correct external aesthetic of said packages.

 The existing packaging is therefore not entirely satisfactory.

 The present invention improves the situation by proposing a new cardboard packaging, obtained using a cardboard blank, packaging which, while being simple and economical to produce, safely presents a correct locking effect to ensure the inviolability of it.

 In addition, the packaging conforms to the present invention, allows, after a first opening of the packaging which remains constantly apparent, an unlimited number of reclosings and reopenings of the packaging, without its aesthetics being altered.

 According to a characteristic of the present invention, the locking tab has a hook shape so that the slot and the tongue constitute structures ensuring the locking of the package when it is closed and it is, moreover, provided at least a precut line surrounding one of said structures in order to allow the latter to be detached from the panel which supports it.

 According to another characteristic of the present invention, the locking tab is formed by a hook composed of a central element connected by its base to the panel which supports it and provided laterally with two fins, the edges of which, on the base side of the element. central, are inclined relative to each other, so as to form between them an open angle towards the base of the locking tab.

 According to another characteristic of the present invention, the slot is formed on the engagement strip, parallel to the fold line forming the articulation thereof on the cover flap and the locking tab is provided on said second panel next to.

 According to another characteristic of the present invention, there are provided, on at least one of the two structures, the slot or the tongue, two grooves positioned so as to push the two fins towards the interior of the package, when the locking tab has taken position in the corresponding slot.

 According to another characteristic of the present invention, the distance separating the slot from the fold line between the engagement strip and the cover flap is slightly greater than the distance separating each point end of the fins from the free edge of the panel which wear this one.

 According to another characteristic of the present invention, the tip of the central element of the locking tab is slightly withdrawn with respect to said free edge of the panel which carries it, and this panel is, moreover, provided on both sides other, from the base of the central element of the locking tab, of a cut-out making it possible to position, during assembly, the slot beyond the points of the hook so as to lock the packaging .

Other characteristics and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings given by way of nonlimiting examples and in which
FIG. 1 represents a perspective view of a package in accordance with the present invention,
FIG. 2 represents an enlarged side view of a slot and locking tab referenced II in FIG. 1, before they are engaged with each other,
- Figure 3 shows in side view the elements of Figure 2 in mutual engagement,
FIG. 4 represents a sectional view of the same elements along the section line referenced IV-IV in FIG. 3.

 FIG. 5 represents a sectional view of the same elements in accordance with an alternative embodiment of the present invention, along the same section line referenced IV-IV in FIG. 3.

FIG. 1 shows a cardboard packaging of general reference 10, in accordance with the present invention, formed by means of a blank composed of said strong panels articulated two by two by fold lines, said packaging 10 being placed on a horizontal plane support 1. To facilitate understanding of the present invention, the various panels constituting
said packaging 10 will be respectively designated panels
side of top and bottom of said package, referred
in the position occupied by it on the fig
1. it should, however, be understood that such a desire
generation of the different panels is given only
to clarify this presentation and is in no way bound
mitative.

Cardboard packaging 10, in accordance with this
te invention, is formed, using a blank comprising
four side panels of generally quadrangular shape
11, 12, 13, 14, articulated two by two by fold lines, such as fold lines 15, 16, arranged vertically according to the position occupied by the packaging
10 in FIG. 1. Two side panels 11 and 14 of the
blank are joined together at the edge 18
using any suitable means, such as gluing
or stapling, so as to form a shaped envelope
general parallelepiped. Classically, one
of the four side panels, such as the panel 11, extends beyond the fold line 18 by a flap
of small width which is folded back to 90 compared to
this panel 11 and glued or stapled to the panel
side 14.

 Each side panel 11, 12, 13, 14 is extended by more than one side beyond a second fold line 19, 20, 21, 22 perpendicular to the first fold lines 15 to 18 mentioned above, by flaps not shown in detail, intended to form in cooperation the bottom panel 23 of the cardboard packaging 10.

In the position of the package 10 shown in Figure 1, the fold lines 19, 20, 21, 22 form the lower edges of each of the side panels 11, 12, 13 and 14 of said package. In a manner known per se, the flaps extending the side panels 11, 12, 13 and 14 beyond the fold lines 19, 20, 21 and 22 may also advantageously be provided with own locking hooks to come into respective engagement so to form a bottom called "automatic deployment" type, that is to say of the type in which the bottom locking is automatically ensured when said packaging is placed in volume.

 It is therefore easy to understand that as soon as the two side panels II and 14 are assembled together, the blank is shaped into a "packaging blank" which can be set up in a few seconds, so as to form a cardboard packaging 10 , as shown in Figure 1.

 Two non-adjacent side panels, 12 and 14, respectively forming the left lateral side and the right lateral side of the cardboard packaging 10, also extend on the other side, beyond a third fold line , respectively 24 and 25, parallel to the second fold lines 20, 22, previously cited, so as to form two dust-proof closure flaps 26, 27, when these are inclined 900 towards the inside of the package, by relative to the corresponding sides 12 and 14. Thus, in the position of the package 10 shown in FIG. 1, said edges 24 and 25 form the upper edges of the left and right lateral sides of the package 10.

 A third panel 13 forming the rear face of the package 10 also extends beyond a third fold line 28 so as to form a cover flap 29, itself extended beyond a fourth line of folding 30 parallel to said third line 28, by a strip 31 capable of coming into engagement with said anti-dust closing flaps 26 and 27, and the fourth side panel 11 forming the front face of the package 10, when the latter it is assembled and occupies the position shown in FIG. 1.

Thus, when the package 10 is formed, the cover flap 29 is intended to form the top face of said package. The aforementioned band 31 will be said in the following description "engagement band".

 We will now describe in more detail the complementary structures delimited by the two closed lines in dashed lines and referenced II in FIG. 1, which are intended to ensure, in cooperation, the locking of the packaging when it is closed, opposite Figures 2 to 5 which show enlarged views of said structures.

 As shown in FIG. 2 which represents the structures intended to ensure the locking of the packaging, before these are mutually engaged, the engagement strip 31 has a slot 40 substantially parallel to the fold line 30 ensuring the connection between the engagement strip 31 and the cover flap 29. Grooves 41, 42 substantially perpendicular to the slot 40 are formed on the major part of the portion 32 of the engagement strip 31 separating said slot 40 from the fold line 30. The role of the grooves 41, 42 forming bosses projecting towards the inside of the package 10, will be explained in more detail in the following description.

 The upper part of the side panel II forming the front face of the package 10 is precut so as to form a locking tab 50 in the form of a hook, composed of a central element 51 connected by its base 52 to the panel 11 which supports, and laterally provided with two fins 53, 54, whose respective edges 55, 56, on the base side 52 of the central element 51, which will be said in the following description "lower edges" of the fins, are inclined l 'relative to each other, so as to form between them an angle CL open towards the base 52 of the locking tab 50. The greatest width of this tab 50, taken parallel to the slot 40 of the strip of engagement must necessarily be substantially less than the length of said slot 40, in order to be capable of penetrating it.

 According to an advantageous characteristic of the present invention, as will be explained in more detail in the following description, the angle of inclination at the lower edges 55, 56 of the two fins 53, 54 of the locking tab 50 is included between 120C and 1500.

 Preferably, said angle of inclination oi of the lower edges 55, 56 of the two fins 53, 54 of the locking tab 50, is equal to 1500. Thus, in the position of the packaging 10 shown in FIG. 1, each lower edges 55, 56 of the tongues 53, 54, form, with the horizontal, and therefore relative to the slot 40, an angle equal to 150.

 As appears, moreover, in FIG. 2, the side panel 11 forming the front face of the package 10 is provided with a pre-cut line, of general reference 60, surrounding at a short distance the base 52 of the tongue locking device 50, and joining the free edge 11 ′ of the side panel II on either side of the locking tab 50.

 As shown in FIG. 2, the precut line 60 is advantageously formed, in the area of the side panel II located below the tongue 50, of discontinuous cuts 61 straight and in alignment, of length included, preferably between 1 cm and 2 cm.

The pre-cut line 60 is completed, in addition, on either side of the locking tab 50, with discontinuous and curved cutouts 62, ensuring a line of general weakness in the upper part of the side panel 11, joining the 61 straight cuts previously mentioned at the free edges 11 ′ of said side panel 11. As will become clear in the following description, the purpose of the pre-cut line 60 is to allow the locking tab 50 to be detached from the side panel 11 who supports it.

 According to an advantageous characteristic of the present invention, the width of the engagement strip 31 is greater than the distance separating the end point of the precut line 60, from the free edge 11 ′ of the front side panel 11 in which the latter is spared.

In the embodiment shown, the extreme point of this precut line 60 is formed by the discontinuous, rectilinear and aligned cuts 61. Thus, as will appear in the following description, this engagement strip 31 is likely to come cover the hollowed out portion at the top of the front side panel 11.

 Of course, although the embodiment which has just been described is particularly advantageous, it is in no way limiting. Thus, it is possible to design a cardboard package 10, in which the engagement strip 31 is provided with a locking tab 50, and the front side panel 11 of the same package is provided with a slot 40. in addition, the pre-cut line 60 can easily, depending on the embodiment adopted, surround not the locking tab 50, but the slot 40, in order to make it possible to separate the latter from the panel which supports it. it is also possible to design a cardboard package 10 in which the locking tab 50 is not provided inside the perimeter of the front side panel 11, but is located outside of it, the tab of locking then being connected by its base 52 to the free edge 11 ′ of the panel 11. In such an embodiment, however, it will be advantageous to give the front side panel II a height less than that of the other side panels 12, 13, 14, unless, for example, said tongue 50 is folded down 90 relative to said front side panel 11, in order to come into engagement in a slot 40 formed on the cover flap 29.

 We will now describe in more detail a particular embodiment of the cutouts intended to form the slot 40 and the locking tab 50, making it possible to safely guarantee the locking of the cardboard packaging 10, when the locking tab 50 is inserted into the slot 40.

To this end, to reliably release the two fins 53, 54, it is necessary to give the length
L1 separating the slot 40, from the fold line 30 acting as an articulation between the engagement strip 31 and the cover flap 29, a value slightly greater than the distance 11 separating each point end 57, 58 located at the end of the lower edges 55 and 56 of the fins 53 and 54, of the free edge 11 ′ of the panel II which supports it. Of course, insofar as the locking tab is formed outside the perimeter of the side panel before 11, the length 11 is taken not relative to the free edge i1 ′ of the front side panel 11, but relative to the extension of the edges 24 and 25 of the adjacent side panels 12 and 14.

 Finally, insofar as the slot 40 is made in the cover flap 29, and the locking tab 50 is folded 90 relative to the front side panel 11, in order to be able to penetrate therein, the aforementioned condition s '' expresses as follows: the length 1'1 separating each pointed end 57, 58, located at the end of the lower edges 55, 56 of the fins 53, 54, of the fold line 30, must be slightly greater than the distance L1 cited above, the definition of which has not changed.

 It is understood that thus, when the locking tab 50 is engaged in the slot 40, as it appears in FIG. 3, the length L1 being greater than the length l1, the slot 40 is positioned lower than the tips 57 and 58 of the two fins 53, 54 of the locking tab 50. Such an arrangement makes it possible to release, in a certain manner, the two points 57, 58.

Consequently, the two fins 53, 54 of the locking tab can be freely pushed towards the interior of the package 10, by means of the grooves 41, 42 each forming a boss projecting towards the interior of said package, as shown in FIG. 4, so as to push the two fins 53 and 54 back into the locked position, that is to say in abutment by their lower edges 55, 56, against the lower edge 40 'of the slot 40 when a user pulls on the cover flap 29, aiming to open said packaging 10.

 Of course, as appears in FIG. 5, one can also envisage an arrangement in which the grooves 41 ′ and 42 ′ are disposed respectively on the fins 53, 54 of the locking tongue 50, so as to form two bosses in projecting outwards from the packaging 10, and coming into contact with the internal surface of the portion 32 of the engagement strip situated between the slot 40 and the fold line 30 ensuring the articulation of the strip engagement 31 on the cover flap 29. As before, the two grooves 41 ′ and 42 ′ push the two fins 53, 54 towards the interior of the package 10 and guarantee in complete safety that these are placed in the position of locking.

However, it was found that this arrangement was less advantageous than that in which the grooves 41 and 42 are formed on the engagement strip, in fact, it was found that the grooves 41 'and 42' caused, in certain cases, a harmful weakening of the fins 53, 54 which risks causing them to jam when attempts to open the packaging.

 In addition, the tip 59 of the central element 51 of the locking tab 50 is slightly withdrawn relative to the free edge 11 ′ of the front side panel 11 which carries it, as shown in FIG. 2 by the length referenced 12. In addition, as also appears in FIG. 2, the front side panel II of the package 10 is advantageously provided with recesses 65, 66, on either side of the base 52 of the locking tongue 50, and below the two fins 53, 54, recesses whose height referenced 13 is at least equal to the length 12 separating the tip 59 of the locking tongue 50, from the line of the free edge il ', such than previously indicated.

 Thus, to guarantee the locking function, it is possible, when the packaging is closed, to engage the slot 40, of a length 12 below the theoretical position it occupies. Such an arrangement is of course obtained due to the fact that the tip 59 of the locking tab 50 is disposed below the line of the free edge 11, of the front panel 11, and due to the fact that this same panel 11 is provided of recesses 65, 66 of height 13 at least equal to the length 12, below each of the two fins 53, 54.

According to a particular embodiment of the present invention given by way of nonlimiting example
the length L1 separating the slot 40 from the fold line 30 is equal to 17.5 mm,
the length l1 separating the tips 57, 58 from the fins 53, 54 from the line of the free edge 11 ′ of the front side panel 11 is equal to 17 mm,
the length 12 separating the end point 59 of the locking tab 50 from the line of the free edge 11 ′ of the front side panel 11 is equal to 2 mm,
- The length 13 representing the height of the recesses 65, 66, arranged on either side of the base 52 of the locking tab 50 and below each of the fins 53, 54, is equal to 5 mm.

 It is easily understood that such a particular embodiment makes it possible to theoretically position the slot 0.5 mm lower than the tips 57, 58, of each of the fins 53, 54, of the locking tab 50, and on the other hand , makes it possible to engage the slot 2 mm lower than its theoretical position, in order to guarantee in all cases, an effective locking of the packaging 10.

 We will now describe in more detail the process for producing and using the cardboard packaging 10 according to the present invention.

 We start initially from a cardboard blank intended to form a package 10 in accordance with the present invention, in which at least two side panels, such as panels 11 and 14, are suitably joined together, so as to form a blank of cardboard. Said blank is then shaped, advantageously by deployment of the self-locking bottom flaps, as mentioned above, in order to form a cardboard packaging of generally parallelepipedal shape as shown in FIG. 1. Said packaging can then be suitably filled of different products.

 The two dust cover flaps 26 and 27 are inclined 900 relative to the side panels 12 and 14 on which they are hinged, towards the inside of the package 10. Finally, the cover flap 29 can be lowered by so as to form the top face of said package, the engagement strip 31 cooperating with said dust-proof closure flaps 26, 27, and the front side panel 11, the locking tab 50 being further inserted in the corresponding slot 40.

 The cover flap 29 is thus lowered to the minimum at the free edge 11 ′ of the front panel 11, so that the tips 57, 58 of the fins 53, 54 escape from said slot, and are pushed back by the grooves 41 and 42 towards the inside of the package 10, so as to ensure locking. In addition, as already explained, the cover flap 29 can be lowered until it comes into contact with the end point 59 of the tongue 50, so as to guarantee the freedom of movement of said fins 53, 54 of the tongue. lock 50, and the correct positioning thereof.

 The locking tab 50 and the slot 40 being thus in position as shown in FIG. 3, any traction on the cover flap 29 aimed at operating the opening of the package 10, is countered by the fact that the lower edges 55, 56, abut against the lower edge 40 'of the slot 40, and prohibit the ejection of said locking tab 50. If the manipulator insists, the slot 40 slides along the lower edges 55, 56 of the fins 53, 54, until it comes into contact with the end points 67, 68 of said lower edges 55, 56, as referenced in FIG. 3. It is understood that in this way any traction is achieved according to the height of said fins 53 and 54, which prevents them from being twisted or braced and eventually escaping from the slot 40.

 it is therefore necessary to access the products contained inside the package 10, to exert pressure on the portion of the front side panel It surrounded by the pre-cut line 60 enveloping the locking tab 50, so to separate it from said front panel 11. it is thus possible to access the product contained inside the boot 10, while leaving the packaging its own qualities of presentation and its external aesthetic. However, such an opening is clearly detected from the outside, which has an advantageous characteristic in the case of fraudulent opening. It should also be noted that in the case where the packaging 10 is used as a display for the products it contains, the precut line 60 makes it possible to eliminate the upper part of the front panel 11 and thus improve the highlighting of the product. In addition, the engagement strip 31 remaining intact, it is easy to close the packaging 10 by engagement of the said strip 31 with the dust-proof closing flaps 26, 27 and the front side panel 11. Of course, the width of the engagement strip 31 being greater than the distance separating the extreme edge of the precut line 60 from the free edge 11 ′ of the front side panel 11, when the packaging 11 is closed again, the engagement strip 31 completely covers the recess in the front side panel 11, which allows, on the one hand, to ensure correct protection against dust, and on the other hand, to ensure perfect aesthetics of said packaging.

 In addition, by virtue of its ease of production, said packaging 10 is particularly well suited for being closed using automatic equipment.

 it therefore appears from the above description that the packaging 10, in accordance with the present invention, is guaranteed tamper-proof, that is to say that no theft of product is possible without causing visible destruction in appearance outside of said packaging, that it is assured of easy opening without affecting the presentation and aesthetic qualities of said packaging, that the boot can subsequently be closed and reopened an unlimited number of times, and that in addition , the time required to close said packaging is extremely limited, while being compatible with automatic closing.

 Of course, the present invention is not limited to the packaging 10 itself but also extends to the blank and blank of packaging for the production thereof, moreover the present invention is not limited to the embodiments which have just been described from which other forms and other embodiments can be provided, without going beyond the ambit of the present invention, it will in particular be easily adapted to packages of general non-parallelepiped shape depending on the use of the packaging considered, whether it is packaging of food products, such as confectionery, chocolate, groceries or any other product such as pharmaceutical products.

Claims (12)

 1. Cardboard packaging, formed using a blank composed of different panels articulated two by two by fold lines, of the type comprising an engagement band articulated by a fold line on a panel forming a cover flap and itself articulated on a first panel on the side of the package, in which the engagement strip and a second panel on the side of the package, opposite to said first side, have a slot and a tongue intended to cooperate during closing the packaging, characterized in that the locking tab (50) has a hook shape so that the slot (40) and the tongue (50) constitute structures ensuring the locking of the packaging (10) when closing it, so that it is necessary to operate at least a partial destruction of the packaging, which is visible, to access the products contained, and by the fact that it is provided at least one pre-cut line (60) surrounding one of the its structures (40, 50), in order to allow the latter to be detached from the panel which supports it.  2. Cardboard packaging according to claim 1, characterized in that the locking tab (50) has a hook shape composed of a central element (51) connected by its base (52) to the panel (11) which la supports and laterally provided with two fins (53, 54) whose edges (55, 56), base side (52) of the central element (51) are inclined relative to each other, so as to form between them an angle (a) open towards the base of the locking tab.  3. Packaging according to one of claims 1 and 2, characterized in that the slot (40) is formed on the engagement strip (31), parallel to the fold line (30) forming the articulation of that -ci (31) on the cover flap (29) and in that the locking tab (50) is formed on said second side panel (11).  4. Cardboard packaging according to one of claims 1 to 3, characterized in that it is provided, on at least one of the two structures (40, 50), two grooves (41, 42; 41 ', 42' ) positioned so as to push the two fins (53, 54) towards the inside of the packaging when the locking tab (50) has taken position in the corresponding slot (40).  5. Cardboard packaging according to claim 4, characterized in that the two grooves (41, 42) are formed on the panel (31) carrying the slot (40) and in that these are arranged substantially perpendicular to slot.  6. Cardboard packaging according to one of claims 2 to 5, characterized in that the angle of inclination (a) of the edges (55, 56) of the two fins (53, 54) of the locking tab ( 50), on the side of the base (52) of the central element (51), is between 1200 and 1500.  7. Cardboard packaging according to one of claims 2 to 6, characterized in that the angle of inclination (a) of the edges (55, 56) of the two fins (53, 54) of the locking tab ( 50), on the side of the base (52) of the central element (51), is equal to 1500.  8. Cardboard packaging according to one of claims 3 to 7, characterized in that the distance (L1) separating the slot (40) from the fold line (30) between the engagement strip (31) and the cover flap (29) is slightly greater than the distance (1i) separating each point end (57, 8) of the fins (53, 54) of the locking tab, d, free edge (it ') of the panel (it ) which carries the latter, so as to guarantee the freedom of movement of the fins (53, 54).  9. Packaging according to one of claims 3 to 8, characterized in that the tip (59) of the central element (51) of the locking tab (50) is slightly withdrawn relative to the free edge (it ' ) of the panel (11) which carries the latter, and this panel is, moreover, provided on either side of the base (52) of the central element (51) of the locking tab, with a cutout (65, 66) for positioning with certainty, during assembly, the slot (40) beyond the tips (57, 58) of the fins, in order to ensure the locking of the packaging (10) .  10. Cardboard packaging according to one of claims 1 to 9, characterized in that the engagement strip (31) has a width greater than the distance separating the end point (61) from the pre-cut line (60) , the free edge (11 ') of the panel (ii) in which the latter is formed.  11, Cardboard blank formed from different panels articulated two by two by fold lines, characterized in that it is cut so as to give by assembly a package according to one of claims I to 10.  12. Cardboard blank obtained from a blank formed from different panels articulated two by two by fold lines in which at least two side panels are suitably secured to each other, characterized in that said blank conforms to the claim 11.