FR2739806A1 - BAG OF INDIVIDUALLY DETACHABLE SHEETS, AND DISPLAY - Google Patents

Abstract

Bundle (1) of individually detachable sheets characterized in that the sheets all have substantially the same dimension, said bundle comprising an upper face (2), a lower face (3), two side faces (4), (4 '), the upper face (2) comprising two transverse edges (5), (5 ') corresponding to the thickness of the bundle and two rectilinear longitudinal edges, namely a front longitudinal edge (6) and a rear longitudinal edge (7) corresponding to a rectilinear edge of a sheet, characterized in that the sheets are interconnected by means of a securing means consisting of a glueable strip (8), the upper face (2) of the assembly of sheets located between the two longitudinal edges (6, 7) being glued to said strip (8), and said glueable strip (8) comprising at least one flap (9) made of a rigid sheet and capable of pivoting with respect to a longitudinal edge (6, 7) so as to be placed against the f leaves or in alignment with them, manufacturing process, kit and display.

Description

The present invention relates to a set of sheets

and its manufacturing process.

  Food retail is a big consumer

  packaging products, including butchers and char-

  cuteries. The sheets used for packaging the products are in the form of sets, in which the sheets

  are either individual or linked together.

  In the case of individual sheets, the only

  provision usable in practice is to place these

  this flat. However, this provision has two drawbacks.

  significant advantages: on the one hand, these sheets occupy a large surface of the work surface, and on the other hand, there is a significant risk of sliding of the sheets relative to each other, since these sheets are usually waxed on one side. Often all or part of these can fall to the ground, becoming

  made unsuitable for their use for lack of hygiene.

  Another solution is to place and hang the sheets vertically. This is how FR-A-2 247 071, FR-A-2 353 402 and FR-A-2 269 425 describe bundles of

  packaging sheets in which the sheets before-

  cut to the desired format are joined together by staples or rivets and has a dividing line or

of perforation.

  To facilitate gripping the leaves, these documents

  propose to fold a part of each sheet, to make an embossing or to practice in the sheets

  orifices offset from each other.

  In a field other than the food industry, that is to say the field of office accessories, FR-A-2 673 885 and EP-A-0 523 947 describe sets of sheets

  in particular intended to be placed on a table

  so vertical to note certain indications.

  These assemblies have a hooking zone comprising

  both perforations, at the level of which the sheets are joined in a bundle. The sheets are precut, and joined together using a cardboard element in the form of a jumper arranged in the extension of the bundle, overlapping the latter, the leaves being stapled, riveted, or sewn on said element hardcover. It would be desirable to have a set of sheets which is very compact for its packaging, which is practical to hang vertically, and simple to manufacture. In addition, it would be desirable if the user could easily remove from the set of

  leaves the leaf he needs.

  Thus EP-A-O 627 366 proposed a bundle of sheets comprising a gripping means allowing an automated manufacture of standardized bundles, in which the sheets are provided on the opposite side to that where they

  are gathered, a gripping means constituted by a fold.

  Since these folds in theory double the thickness, provision is made for reducing the thickness of the sheet of film.

  paper in the part of it intended to be folded.

  This is why, the subject of the present invention is, on the one hand a set of sheets, and on the other hand, a device for distributing said sheets. It would also be desirable if the device for distributing said sheets could also be produced within the framework of

  the paper industry. For obvious ecological reasons

  it would also be desirable to minimize losses

  of paper, making them preferably null.

  This is why the subject of the present invention is a bundle of individually detachable sheets in which the sheets all have substantially the same size, said bundle comprising an upper face, a lower face, two lateral faces, the upper face

  comprising two transverse edges corresponding to the thickness

  of the bundle and two straight longitudinal edges,

  namely a front longitudinal edge and a long edge

  gitudinal rear corresponding to a straight edge of a sheet, characterized in that the sheets are interconnected by means of a fastening means consisting of a bondable strip, the upper face of

  the set of leaves located between the two long edges

  gitudinal being glued on said strip, and said adhesive strip comprising at least one flap consisting of a sheet

  rigid and able to pivot relative to a long edge

  gitudinal so as to be placed against the leaves or in

alignment of these.

  Such a bundle of sheets meets the particular constraints of their use, namely that, on the one hand, they must be effectively glued to the strip, in order to avoid their fall which would therefore make them unusable and

  unsuitable for their packaging of foodstuffs

  keep quiet and also have the constraint of being easily detachable. In addition, since it does not seem conceivable to have to change the bundle very frequently, it should preferably be possible to make bundles of several

hundreds of sheets.

  This is why in preferential conditions of realization, the bonding is carried out by applying a thickness of 0.03 to 0.5 mm, and preferably 0.1 to 0.5 mm and in particular approximately 0.25 mm d '' hot melt glue. The hot-melt adhesive is in particular an adhesive having a threshold load of 2.4 to 3.1 N / mm2, a breaking load of 3.3 to 3.8 N / mm2, and an elongation of 120% to 200% , measured according to standard NF ISO 6239 using a 3 to 4 mm thick dumbbell-shaped test tube, 130 mm long, the dumbbell branch measuring 40 mm long by 6 mm wide, the dynamometer jaws being spaced 40 mm apart, and applied traction 200 mm per minute. The load expressed per unit area corresponds to the ratio between the load and

the surface of the test piece.

  We prefer a meltable adhesive having a viscosity measured with Rhéomat 15/12 of the order of 1200 to 1800 m Pa.s in particular from 1300 to 1700 m Pa.s at 160 C and a softening point measured by the ball technique and the ring from 60 C to around 85 C and in particular from 69 to 76 C. Mention may be made, for example, of the adhesive marketed by the company

  Henkel under the reference Technomelt R 3207.

  The detachable sheets can be of any grammage, in particular from 30 to 80 g / m2, particularly about g / m2, and are all particularly suitable for food contact. They are for example made of heat-sealable paper, of complexed paper, of duplexed paper, that is to say consisting of a polyethylene sheet joined by multipoint bonding to a sheet of paper, parchment paper or particularly in mono or paraffined sheets

  double-sided, or in heat-sealable sheets.

  Given the industrial constraints, the usable sheets will generally all have the same dimension. Likewise, if we can design any shape for these leaves,

  as long as we keep a rec-

  in order to assemble them by gluing, the general shape of these sheets will preferably be rectangular or square. The bundle may for example have a thickness of

  1 cm to 6 cm, preferably between 2 cm and 4 cm.

  As seen above, the adhesive strip has a width which corresponds to the thickness of the bundle. Although this strip may have a shorter length than the width of the bundle, the latter being defined as the dimension which is the subject of the bonding, preferably this strip has a length which corresponds substantially to the width of a sheet . The essential characteristic of this strip is that it can be bonded at least on one side, so that

  be able to fix the sheets.

  This strip can be made for example of a plastic material, in particular a plastic material having undergone a conventional treatment to make it stickable, known from the state of the art, but is preferably made of cardboard material such as pure kraft cardboard from weight from 180 to 500g / m2, preferably around 300g / m2. A material which is suitable for use in a thermal binder, that is to say resistant to heat and sufficiently flexible to be chosen as the material for producing the bands

  be folded by the cylinders conventionally used for installation

  llation of a cover, after bonding to constitute the or

the flaps.

  The adhesive strip is extended by a flap made of a rigid sheet. If nothing prevents the flap from being made of a material different from that of the strip, under preferential conditions of production, the strip and the

  flap are made of the same material and all

  especially in one piece. A simple folding then allows the flap to pivot, in particular with respect to a longitudinal edge. When packaging and shipping a bundle according to the invention, the flap can be placed against the sheets like the cover of a book. Thus, the volume and the surface of the whole is minimized since it corresponds

  almost exactly on the unit surface of a sheet.

  This flap is capable of pivoting with respect to the longitudinal edge to which it is adjacent, in order to be placed in alignment with the sheets or even beyond, as far as against the adhesive strip. Thus, it can be hung, especially on a wall. If it is possible to pierce this flap at the time of its attachment, for example using a butcher's pick, under preferential conditions, said flap comprises at least one perforation placed near its center, for reasons balance, or several preferably symmetrical perforations. Thus, the user simply has to hang the perforated flap on one or more points, in the latter case the spacing of these points corresponding to the spacing of the perforations. To balance the assembly and make it even more resistant, under preferential conditions, the bundle according to the invention comprises two flaps, preferably symmetrical, namely a rear flap, delimited by the rear longitudinal edge, and a determined front flap through

  the front longitudinal edge. The two flaps are preferably

  nce perforated identically so that their perforations can be threaded in the same hooks. These flaps also offer the possibility of being able to be printed by

  example for advertising.

  The present invention also relates to a process for preparing a bundle of individually detachable sheets as described above, characterized in that a thickness, in particular of 0.03, is applied to a wafer of a bundle of sheets 0.5 mm from a hot-melt adhesive, press a sticky strip against the glued part to obtain the expected bundle and, in the case where the flap is a separate part from the sticky strip, proceed to

installing said flap.

  In certain embodiments, the strip is a plastic strip which comprises elements of the type

  "hinge", while the flap includes complementary elements

  allowing the flap to pivot relative to

the whole sheet-strip.

  However, it is preferred to use a strip-flap assembly consisting of a single piece, in particular made of cardboard as we have seen above. In this case, the bundle of glued sheets is pressed onto this single piece, and the flap is formed by folding this piece at one or two longitudinal edges, namely the longitudinal edges.

front and rear.

  Particularly preferred wagering conditions

  using the above process, a thermo is used

  bookbinder. The process can therefore be carried out in particular

  ment as follows: A bundle is introduced into the binder, it is tackled so as to regularize the alignment of the sheets, the bundle of sheets is pressed in its thickness, the strip is pressed against the glued back of the bundle, and in if the flaps are made in one piece, the flaps are folded to form a fold along the edges of the glued part, and thus obtain the expected bundle according to the present invention. Under particularly conditions

  preferred, we use the marketed binders respectively

  by the companies JUD, and C.P. BOURG under the

  denominations MR 800, MR 500 and BB 4000.

  The present invention also relates to a device

  tif allowing the easy gripping of the sheets of the bundle one by one. This device comprises in its simplest conformation a plate having at one of its ends an inclined return, possibly with lateral reinforcements to reinforce or adjust this inclination. This device, for example made of plastic, cardboard, metal or wood and serving as a display is used as follows: The display is fixed for example vertically against a wall, the inclined part opposite the wall, and a bundle according to the invention, so that the last sheet of the bundle, rear, is placed against this plate, but so that the lower part of the plate is located above the bottom of the sheets. The lower part of the sheets is then installed over a certain length in the bowl provided by the lower return of the plate,

  so that the leaves straighten up.

  Thus, it suffices to pinch between two fingers the bevel of leaves thus produced at the lower end of the bundle, to easily detach the first of these by traction.

  A display particularly suited to the following bundles

  above, especially since it can be entirely produced within the framework of the paper industry, is a display obtained by

  folding of a foldable sheet, achievable in plastic material

  than, but preferably in cardboard, with adequate cutouts. An example of such cuts is given below in

the description of the figures.

  This is why the present application also relates to a kit containing a bundle of leaves according to the invention as well as a display comprising a panel intended to be placed substantially vertically, provided at its base with a return

tilted up.

  The present application finally relates to a display stand for the above bundle, characterized in that it is obtained by

  folding of a cut sheet with a rectangular panel

  gular, itself composed of four equally rectangular panels separated by fold lines parallel to each other and perpendicular to the length of said rectangular panel, the first of these panels having a length greater than half of all four panels, the second being the narrowest, the third and the fourth having equal dimensions, at least one elongated slot is

  provided in the fold line between the second and third

  th panel, and a tongue is provided at the end of the last panel, of dimension such that by folding between the third and fourth panels, said tongue can be introduced into the above-mentioned elongated slot, over the entire height of the sides of the first panel other panels are provided whose general shape is that of a boot narrowed upwards, the width of the heel of the boot is approximately that of the second panel, the length of the fold line located between the instep and the heel is equal to approximately the width of the third or fourth panel, attached to the height of the leg of the boot opposite the

  first panel is a substantially trianal panel

  gular, also separated from the leg of the boot by a fold line, said fold line being the bisector of the angle formed by the fold line between the leg of the boot and the first panel and by the outer side of the panel triangular corresponding to a leg height

  of the boot, the latter side comprising at least one strap

  dimension so that by folding between the boot and the triangular panel, this tab is inserted and locked in a corresponding slot formed in the line of

  folding between the leg of the boot is the first panel.

  The invention will be better understood if reference is made to the appended drawings in which: - Figure 1 is a perspective view of a bundle according to the present invention, - Figure 2 shows a bundle according to the invention similar to that in FIG. 1, hung vertically by means of a peak, FIG. 3 is a view in partial section along a plane perpendicular to the surface of a sheet of a bundle according to the invention installed in a display, Figure 4 is a perspective view of a display according to the present invention obtained by folding a foldable sheet and Figure 5 is a flat view of the display of the

figure 4.

  In FIG. 1, one can observe a bundle 1 of individually detachable sheets in which the

  leaves have a rectangular shape and all feel

  almost the same dimension. This bundle has an upper face 2, a lower face 3, two lateral faces 4 and 4 '. The upper face 2 is delimited by two transverse edges 5 and 5 'which correspond to the thickness of the bundle, as well as two rectilinear longitudinal edges with

  know a longitudinal edge before 6 and a long edge

  rear longitudinal 7. These longitudinal edges correspond to

  tooth, in this figure, on one side of the first and last sheet of the bundle, more specifically on one of the widths of these sheets. In the bundle, the sheets are interconnected by means of a joining means which consists of a strip 8 of which at least

  the part located on the side of the leaves is suitable for gluing.

  This strip 8 has here a rectangular shape, the length of which corresponds to the width of a sheet of the bundle, and the width of which corresponds to the thickness of the bundle. The upper face 2 of the bundle of sheets is glued to said strip 8. This adhesive strip 8 here comprises two flaps 9, namely a front flap and a rear flap. In this embodiment, the rear flap is longer than the front flap; however, these flaps can have the same length, or one of the flaps can be eliminated altogether. A flap consists of a rigid sheet, and it can pivot relative to one of the longitudinal edges, 6, 7 so as to be placed against the sheets for example for transport, or in alignment thereof, by example for hanging, being able to take all the intermediate positions. In this embodiment, the flaps 9 and the strip 8 are made in one piece, for example in

  cardboard. The front flap, as well as the rear flap (part-

  hidden in the figure) comprises three holes 10, 11, 11 ', which can allow the vertical attachment of the bundle by means of, for example, a peak 12. This peak 12 is not

  shown in this figure.

  In FIG. 2, similar to FIG. 1 but in which the two front and rear flaps 9 have the same

  dimension, we can observe the same elements as above.

  It should be noted that the flaps 9 have been pivoted relative to the longitudinal edges 6 and 7, to place them beyond the alignment with the sheets, in order to hang the bundle by means of a pick or a hook 12 that was introduced into the orifice 10, and in another similar orifice placed in coincidence and located on the rear flap. We could similarly rather use the holes 11 and 11 'to achieve a similar attachment, or even the three holes 11,' llet 12, provided that we have pins, nails, hooks or

others with adequate spacing.

  In FIG. 3 which represents a display of con-

  simple figuration according to the present invention, it can be noted that the latter comprises a rear plane panel 13, as well as a smaller front panel 14, inclined upwards. A horizontal panel 15 joins the rear panel 13 and the front panel 14. However, this horizontal panel can be completely absent, and in this case the front panels 14 and rear 13 meet at the base at an acute angle. In other configurations, instead of the panel 15, one could have a portion of cylinder, and thus in section one could observe a rounded base. In other embodiments, the display unit according to the invention has no bottom and the front 14 and rear 13 panels can be connected for example only by their sides. In this figure, we can also observe a bundle 1 installed in this display. In FIG. 2, the two flaps 9 have been pivoted upwards, and after having installed a display unit according to the invention against a vertical panel such as a wall, a partition, provided with a hook 12, we have then installed the bundle of leaves 1. It is observed that therefore the lower end of the bundle of leaves has taken a

  bevel shape, the point of the bevel being

  killed by the sheet located on top of the bundle, making it particularly easy to be removed

  for example by grasping it between your thumb and forefinger.

  In Figure 4, we can observe, mounted, the display unit disassembled and flat in Figure 5. It is simply necessary to observe in this Figure 4 the rear panel 13, the front panel 14, as well as the panel junction 15 of

front and back panels.

  In FIG. 5 which shows flat a display produced by cutting and folding a sheet, the following elements can be observed: We can first of all distinguish a rectangular panel made up from top to bottom by panels A, O, F, G and H. These panels are delimited

  by fold lines parallel to each other and perpen-

  perpendicular to the length of the rectangular panel. The first panel, A, optional, is intended to fold against the panel O, from the front or from the rear, to reinforce the attachment holes, thus constituting a double thickness at this level. The also rectangular panel O has a width which corresponds at least to the width of the bundle of sheets to be hung. Its length is at least less than the cumulative length comprising the length of the bundle of leaves as well as the width of a flap, in order to be able to cause a straightening of the leaves at its base. This rectangular panel O is separated from the following rectangular panel, F, by a fold line; it corresponds to the bottom 15 of the display of Figures 3 and 4. This panel F is separated from the panel G also rectangular by a fold line comprising in this configuration two slots 20, 20 '. The panel G which corresponds to the panel 14 of the display unit of FIGS. 3 and 4 is separated from the rectangular panel H which also corresponds to the panel 14 by a fold line. The lower part of this panel H comprises two tabs 21, 21 'of dimensions allowing them to be inserted into the slots 20 and 20'. The width of the panel G is equal to the width of the panel H. On either side of this set of panels A, O, F, G, H, there are two symmetrical panels constituted as follows: If we refer on the left panel, it can be considered that it itself is made up of four panels and comprises, attached to a length of panel O, a first panel itself made up of three panels, roughly in the form of a boot, with a heel (panel E), a foot (panel D), a leg (panel B). The upper leg is narrower than the bottom (located on the side of an ankle). The panel E has a height (corresponding to the height of the heel) which is not critical. However, it must not block the slots 20 or 20 'when it is in the functional position. The width of this panel E corresponds to the width of the panel F. It can also be observed that the panel B (the leg) is separated from the panel O by a fold line which includes two slits, 22. We can finally observe a panel C substantially triangular in shape, having one side in common with the panel B. The longest side of the panel C which does not correspond to the junction with the panel B, the leftmost in the figure, comprises two tongues 23 which, when the 'we fold panel C against panel B,

  can be inserted and blocked in the slots 22.

  To mount the above display, proceed as follows: Fold panel C on panel B, fold all panels B and C in such a way that panel BC is perpendicular to panel O, and we

  locks the tabs 23 in the slots 22.

  We fold panel E perpendicular to the whole

  BC panel. We operate in the same way on the other side.

  We fold the panel F, and therefore the panels G and H, on the same side as the other panels with respect to the panel O. We then fold the panel G (and therefore the panel H) again in the same sense, by taking support on the panels D, and the panel H is folded against the panel G, towards the interior of the assembly, thus sandwiching the two panels D, and the whole is blocked by introducing the tabs 21, 21 ' in the slots 20, 20 'The folding of the panel A, which can be done as well towards

  both front and rear, can be done at any time.

  On the other hand, it is obvious to those skilled in the art that the order of some of the above operations does not matter for the production of the display unit according to the invention, as well as for example the shape of the panel. Optional or the shape of panel D.

Claims (9)

  1. Bundle (1) of individually detached sheets   bles characterized in that the leaves all smell   substantially the same dimension, said bundle comprising an upper face (2), a lower face (3), two lateral faces (4), (4 ′), the upper face (2) comprising two transverse edges (5), (5 ') corresponding to the thickness of the bundle and two straight longitudinal edges, namely a front longitudinal edge (6) and a rear longitudinal edge (7) corresponding to a straight edge of a sheet, characterized in that the sheets are interconnected by means of an integral means   a sticky strip (8), the upper face (2) of the assembly   ble of sheets situated between the two longitudinal edges (6, 7) being glued to said strip (8), and said adhesive strip (8) comprising at least one flap (9) consisting of a rigid sheet and capable of pivoting relative to a longitudinal edge (6, 7) so as to be placed against the   sheets or in line with them.   2. Bundle according to claim 1, characterized in that the bonding is carried out by applying a thickness of   0.03 to 0.5 mm of hot melt adhesive.   3. Bundle according to claim 2, characterized in that the fusible adhesive has a softening point measured by the   technique of the ball and the ring from 60 C to about 85 C.   4. Bundle according to one of claims 1 to 3, charac-   terized in that the leaves are waxed leaves   single or double sided or heat sealable sheets.   5. Bundle according to one of claims 1 to 4, charac-   that the adhesive strip (8) is made of cardboard material.   6. Bundle according to one of claims 1 to 4, charac-   terized in that it comprises two flaps (9), namely a rear flap, delimited by the rear longitudinal edge (7), and a front flap determined by the longitudinal edge before (6).   7. Process for the production of a bundle of sheets   dividendally detachable as defined in one of   Claims 1 to 6, characterized in that one applies to   a slice of a bundle (1) of sheets a hot-melt glue, press a sticky strip (8) against the glued part to obtain the expected bundle and, in the case where the flap (9) is a separate part from the sticky tape   (8), installs said flap (9).   8. Kit containing a bundle of leaves according to the invention as well as a display comprising a panel (13) intended to be placed substantially vertically, provided at its base with a return (14) inclined upwards.   9. Display for bundle as defined in one of the   Claims 1 to 6, characterized in that it is obtained by   folding of a cut sheet with a rectangular panel   gular, itself composed of four panels (O, F, G, H) also rectangular separated by fold lines parallel to each other and perpendicular to the length of said rectangular panel, the first (O) of these panels having a length greater than half of all four panels, the second (F) being the narrowest, the third (G) and the fourth (H) having equal dimensions, at least one elongated slot (20, 21) is provided in the fold line between the second (F) and third (G) panel, and a tab (21, 21 ') is provided at the end of the last panel (H), of dimension such as by folding between the third (G) and fourth (H) panels, said tab (21,21 ') can be introduced into the elongated slot (20,20') preci-ted, over the entire height of the sides of the first panel (O) are provided other panels (B, D, E) whose general shape is that of a boot narrowed upwards, the width of the heel ( E) of the boot (B, D, E) is approximately that of the second panel (F), the length of the fold line located between the instep and the heel is approximately equal to the width of the third (G) or of the fourth (H) panel, attached to the height of the leg (B) of the boot opposite the first panel is a panel (C) substantially triangular, also separated from the leg (B) of the boot   by a fold line, said fold line being bis-   section of the angle formed by the fold line between the leg (B) of the boot and the first panel and by the outer side of the triangular panel corresponding to a height of the leg (B) of the boot, the latter side comprising at least one tongue (23) of such dimension that by folding between the leg (B) of the boot and the triangular panel, this tongue (23) is inserted and blocked in a corresponding slot (22) formed in the line of folding between the   leg (B) of the boot is the first panel (O).