Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
  • B65D5/46—Handles
  • B65D5/46072—Handles integral with the container
  • B65D5/4608—Handgrip holes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
  • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
  • B65D21/0233—Nestable containers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
  • B65D5/2038—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape
  • B65D5/2047—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape trapezoidal, e.g. to form a body with diverging side walls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
  • B65D5/28—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
  • B65D5/441—Reinforcements
  • B65D5/443—Integral reinforcements, e.g. folds, flaps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/003—Straightening the side walls of boxes; Squaring collapsed folded box blanks; Deforming boxes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/26—Folding sheets, blanks or webs
  • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/26—Folding sheets, blanks or webs
  • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
  • B31B50/30—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms the mandrels moving
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/26—Folding sheets, blanks or webs
  • B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
  • B31B50/46—Folding sheets, blanks or webs by plungers moving through folding dies and interconnecting side walls

Definitions

• PLATEAU EMBOITABLE, FLAN, CORRESPONDING PACKAGING AND TRAINING MACHINE OF SUCH A PLATEAU
• the present invention relates to a nestable tray made of cardboard sheet material comprising side walls and a bottom. It also relates to a blank for the constitution of such a tray, a package comprising product webs manufactured with such a blank and a machine for forming such a tray. It finds a particularly important but not exclusive application in the field of trays stackable on each other for dairy products, such as plastic yoghurt containers closed with lids and arranged in a sheet of four or eight jars interconnected. by their upper part. Packaging is already known, for example for cheeses or yoghurt pots, stackable on top of one another so as to constitute stackable piles on a pallet.
• Such batteries must on the one hand allow the lower packs to withstand the compression of the packages above and on the other hand be fairly stable vertically to avoid tilting laterally.
• corrugated material sufficiently resistant to compression with vertically disposed grooves, and stacking lugs with corresponding recesses, the weight of a package from above then resting on the walls of the packaging of below. The resistance of the material is then sufficient to allow the packaging to be grasped for example by means of recessed handles in two lateral faces facing the plate.
• the weight of the carton of the packaging is indeed and for example necessarily greater than of the order of 400g / m 2 and in all cases greater than 350g / m 2 for reasons of strength of the materials, especially concerning the strength of the grip handles.
• the embedding of tenons, outgrowth of fragile cardboard, in the recesses may not fully fulfill the role of blocking and addressing that we want him to play, the height of the stack of packaging is necessarily fixed said stack also having fragile angles.
• the present invention aims to provide a tray, a blank, a packaging and a machine for forming such a tray, better than those previously known to the requirements of the practice, in particular in that it makes it possible to overcome these drawbacks by minimizing the grammage of the carton and this while stiffening the tray in its length and allowing the presence of solid grip handles, easy to grasp for a user. With the invention, it is thus observed a great ease of stacking with excellent resistance angles to the links and films and an optimized cost.
• the invention also allows the packets to be embedded in each other and / or a stack height which can be adjusted if necessary. products with a load distribution on all products.
• the bevel formation of the bottom of the plate unexpectedly strengthens the rigidity of the plate during side impacts, which is particularly advantageous during the conveying and handling of packages.
• the present invention proposes, in particular, a board made of cardboard sheet material comprising side walls and a base, characterized in that two opposite side walls each comprise a flap provided with a longitudinal flap intended to form a rim on a part the height of said shutter and in that the basis weight of the carton is less than or equal to 350 g / m 2.
• the tray thus obtained has excellent torsional strength despite its light basis weight.
• said opposite side walls are respectively provided with at least one obviously allowing entry by a user located below said rim.
• the plate has a transverse and / or longitudinal frustoconical cross-section adapted to allow at least a partial embedding of said plate in a lower plateau; - The lower part of each of the side walls form a slanted cutaway to the central portion of the plate clean to allow at least a partial embedding of said plate in a lower plate.
• the bottom thus has a beveled shape transversely and longitudinally.
• This beveled shape allows in fact a self centering when stacking trays especially when automatic means are implemented to achieve such a stack;
• the tray is corrugated cardboard whose grooves are parallel to the bottom of said tray, perpendicular to the rim which increases the stiffening of the plate in the direction of the length;
• two opposite side walls are formed of flaps respectively connected on either side by first fold lines to flaps end forming partially the other two walls; each end flap is fixed on the outer face of the shutter with rim of the adjacent side wall.
• the tray is arranged to contain at least one web, or at least two superimposed webs, of containers connected to each other in the upper part of each of said webs, the respective dimensions of the containers and the tray being such that the upper layer of containers is able to support the weight of the top tray via or not an interposed intermediate plate;
• the dimensions of the tray are arranged to allow a recess trays in one another to a height less than or equal to 1/3 of the height of said tray; the respective dimensions between containers and tray are arranged so that the lower face of the upper part of the product sheet resting on the bottom of the tray is above said rim.
• the invention also provides blanks for forming the trays as described above. It also proposes a blank for the constitution of a tray, comprising a rectangular central panel provided on each side of a shutter, to namely, two opposite rectangular or substantially rectangular opposed first flaps and two opposite rectangular or substantially rectangular second flaps, said second opposite flaps being respectively connected on either side by first fold lines to end flaps, characterized in that said first flaps each comprise a longitudinal flap adapted to be folded towards the inside of the tray and to be fixed by gluing on one side of said corresponding first flap to form a rim on part of the height of said flap, and in that the cardboard is a corrugated board whose grammage is less than 350g / m 2 , for example 330g / m 2 .
• each flap is connected to the central panel by a strip connected respectively on either side of the strip to said flap and to the central panel by parallel fold lines, the lateral edges of the strip extending obliquely outwardly. compared to the central panel.
• the first fold lines are connected to the central panel by the free edge of an intermediate band, said free edge being at an angle to the edges of the bottom of the plate.
• the lateral edges of the intermediate strips are angled with respect to the fold lines, on a first portion located on the side of the central panel so as to give the bottom of the tray a section of frustoconical partial shape in the transverse and longitudinal directions of the plate, the walls then being vertical again.
• the first fold lines are at an angle to the edges of the bottom of the plate and / or the lateral edges of the first flaps are oblique with respect to the fold lines, so as to give the plate a section of frustoconical shape in the direction transverse and / or longitudinal.
• the small base of the first flaps is on the side of the central panel.
• the invention further proposes a package comprising a tray of the type described above, characterized in that it comprises at least one sheet of at least two rows of containers connected together by their upper parts, the respective dimensions of the containers and the tray being such that the upper layer of containers is adapted to support the weight of the top tray via or not an interposed intermediate plate, for example and advantageously due to the possible partial embedding between trays.
• the invention also proposes a machine for forming a tray from a blank of material sheet comprising a bottom panel provided with side flaps, some having end flaps and forming the side walls of the tray, characterized in that said machine comprises:
• a support plate on the surface of said bottom panel comprising lateral edges raised to form a frustoconical section plate in the transverse and longitudinal directions, of complementary shape to that of the bottom of the plate to be formed,
• a mandrel comprising an application portion of shape complementary to that of the support plate
• the mandrel is retractable between a first forming position of the plate and a second position of disengagement of the walls of the plate ;
• the retractable mandrel is formed by an armature having four perpendicular or oblique edges with respect to the application face, the edges being cut corners;
• the means for folding the lateral flaps comprise at each corner of the tray a roll of application arranged to push the flaps and flaps opposite to a flat position and a position where the flaps and flaps are fixed to each other to form the tray;
• the plate comprises two opposite longitudinal side flaps respectively provided with end flaps and two opposite transverse side flaps, each comprising a longitudinal flap, the machine further comprising glueing devices for depositing lines of adhesives during the feeding of a blank on said transverse flaps and / or the longitudinal flaps and pressing members provided for applying the longitudinal flaps on the adjacent transverse side flaps
• FIG. 1 is a top view in perspective of a tray according to a first embodiment of the invention.
• - Figure 2 is a plan view of a blank corresponding to the plate of Figure 1.
• - Figure 2A is a plan view showing a variant of the blank of Figure 2 according to the invention.
• FIG. 3 is a perspective view of a layer of trays according to FIG. 1.
• FIG. 4 is a perspective top view of a stack of packages formed from trays according to FIG. embedding and the transfer of weight on the products.
• Figure 5 is a plan view of a blank corresponding to another embodiment of the invention.
• FIG. 6 is a top perspective view of a stack of packages formed from trays according to the invention corresponding to the blank of FIG. 5.
• FIG. 7 is a top view in perspective of a tray. according to another embodiment of the invention beveled bottom.
• - Figure 8A is a partial sectional view of Figure 7 according to IIA-IIA.
• - Figure 8B is a partial sectional view of Figure 7 along IIB-IIB.
• FIG. 9 is a top plan view of a blank for forming the tray according to FIG. 7.
• FIGS. 1 is a plan view of a blank corresponding to another embodiment of the invention.
• FIG. 6 is a top perspective view of a stack of packages formed from trays according to the invention corresponding to the blank of FIG. 5.
• FIG. 10 and 11 are blank plan views corresponding to two other embodiments of the invention.
• - Figure '12 is a partial sectional view of the bottom of the plating device in the retracted position plate (first half-section) and in the application position (second half section).
• - Figure 13 is a partial sectional view of the retractable mandrel system according to one embodiment of the invention in the retracted position (first half-section) and in the application position (second-section).
• - Figure 14 is a perspective view of the support plate of the bottom of the plate on the mandrel according to one embodiment of the invention.
• Figure 1 shows a tray 1 of double-sided corrugated cardboard of thickness between 1 and 2 mm, 330 g / m 2 , made from three sheets of paper 100g / m 2 . In other embodiments, it is used three sheets of grammages 90g / m 2 , see 80g / m 2 . This light weight paper was not used for the tray cartons of the prior art because it was considered too weak, especially for handles and vertical compression.
• the plate 1 comprises four lateral walls 2, 3, 4 and 5 and a bottom 6.
• the two opposite side walls 3 and 5 are identical and comprise three parts, namely two rectangular or substantially rectangular trapezoidal flaps 7, 8 respectively integral with the and of the same height as the adjacent side walls 2, 4, and an isosceles trapezoidal flap 9 connected to the bottom 6 by a fold line 10. More precisely, the flap 9 has lateral edges B sloping outwards with respect to the folding lines 10. It has a longitudinal flap 11 forming a rim on a portion of the height of said flap for example of the third or half of said height and over the entire length of the latter. The flap 11 has side edges C biased inwards to allow a superposition of the edges B and C when the flap is folded over the flap to form the rim around the double line junction 18.
• Each flap is provided with a central recess 12, for example of oval shape, of a size allowing gripping by one or two fingers, or by the hand of a user, this obviously being located just below the rim once it folded and glued on the inner side of the corresponding side wall.
• This handle has for example a lower side 13 coinciding with the lower edge 10 of junction between side wall and bottom.
• the other two side walls 2 and 4 are trapezoidal with their small base coinciding with the bottom edge.
• Each side wall comprises in a manner known per se recesses which will allow the ventilation of the products stored in a pallet, namely recesses 14, for example oval, in the opposite longitudinal side walls 2, 4 and small round recesses 15 in the flaps 7 and 8 opposite side walls 3, 5.
• FIG. 2 is a plan view of the blank 16 making it possible to obtain the plate of FIG. 1.
• the blank 16 comprises a central panel formed by the rectangular bottom 6 provided on each side with a flap adapted to constitute at least in part a side wall, namely two opposite isosceles trapezoidal first flaps 9 and two isosceles trapezoidal opposed second and second flaps 2, said second opposite flaps being respectively connected on either side by first fold lines 17 to the end flaps 7, 8.
• the flaps 7, 8 are adapted to be folded towards the inside of the tray and to be fixed by gluing on the outer face of the corresponding first flap 9 to form the side walls 3 and 5.
• the first flaps 9 comprise a flap isosceles trapezoidal longitudinal 11 in the opposite direction of the flap 9 to form a rim on part of the height of said flap as described above with reference to Figure 1; This flap extends over the entire length of said flaps, which will allow lateral stiffening of the plate, the rim acting as a bracing beam between the two other opposite side walls.
• the first flaps 9 are in addition respectively provided with a central orifice for example of oval shape and of dimensions allowing the gripping by a hand of a user who will form handle and who will be located below the rim once this last realized. More precisely the future rim is constituted by the horizontal flap 11 connected to said flap 9 for example by a double fold line 18.
• the first fold lines 17 are at an angle to the sides of the tray opposite , located in their extension, so as to give a frustoconical shape in the longitudinal direction to the plate once formed, the small base of the wall being on the side of the central panel 6.
• Such a blank makes it possible to form a tray of trapezoidal section in the transverse and longitudinal direction.
• FIG. 2A shows a variant 16 'of the blank of FIG. 2. More precisely, the blank 16' has two second shutters 2 and 4 as described above and two rectangular first shutters 9 'whose peripheral edge is connected to a rectangular flap. 11 'clean to form the rim. Recesses E along and at each end of the folding fold lines between the flaps 2 and 4 and the bottom are provided to cooperate with protrusions T located at the upper outer periphery of said flaps.
• FIG. 3 shows trays 1, 1 ', 1', ... according to the embodiment of FIG. the invention of Figure 1 arranged horizontally on a pallet (not shown) for handling and transport.
• the trays are arranged side by side and can be connected two by two through an intermediate plate 19 provided with central notches 20, and lateral 21 for embedding the plate in the upper lateral edges 22 of the side walls, the plate then resting on the products arranged inside the trays, allowing a blocking and a better distribution of the weight of the packaging of the top on the products.
• FIG. 4 it has been shown how to stack two packages obtained from trays 1 and 1 according to the embodiment of the invention more particularly described here.
• the packages are filled with products whose total height inside each tray is less than the total height of the side walls of the package.
• each package comprises two plies 23, 24 of two rows of containers 25, for example yoghurt pots, connected to each other in the upper part 26 of each of the plies, in a manner known per se.
• the respective height dimensions h of the containers and the plate H are such that the upper part 26 of the container of the top layer is at a distance less than the total height H (2h ⁇ H).
• the bottom of the walls 27 'of the upper plate is embedded within the walls 27 of the tray lower 1, so that the bottom of said upper plate rests on the products 25, for example via a plate 28, and not on the side walls of the plate 1.
• FIG. 5 shows another embodiment of a tray blank 29 according to the invention.
• the latter comprises a central rectangular panel 30 connected to two opposite rectangular longitudinal side flaps 31, 32 each provided on each side with flaps connected to said flaps by first folding lines 34, the flaps 33 and the flaps 31, 32 having on the adjacent ends of their outer periphery 35 pins 36, forming an outgrowth centered and straddling the ends of the fold lines 34 corresponding.
• the central panel 30 comprises meanwhile notches 37 in the form of angle coinciding with its angles 38, adapted to cooperate with the corresponding tenons matching the sides of the corners of the lower panel.
• the panel 30 is also connected on its two other opposite sides, by fold lines 39 aligned with the first fold lines 34 so that the section of the package is rectangular, end flaps 9 identical to those of FIG. 2, each comprising a longitudinal flap 11 capable of forming a rim and a obviously 12 allowing gripping by a user.
• FIG. 6 shows a stack of packages 40, 40 'obtained with blanks 29 as described with reference to FIG. 5.
• the walls 41 of the tray of the upper package 40 rest on the walls 41' of the lower package 40 ', allowing a good junction and the vertical continuity of the walls, most of the weight of the upper package being taken up by the products 42 themselves, the size of which is arranged so that the bottom of the tray upper, through or not an intermediate plate 43 interposed thickness determined, rests on the top of the products of the lower plate.
• the embedding of the pins 36 in the recesses 37 makes it possible to prevent relative sliding between two plates in the longitudinal direction.
• the flaps 7 and 8 are glued to the outer faces of the adjacent flaps 9 to form the side gripping walls of the trays then configured to have a trapezoidal section.
• the trays are then filled with products in a manner known per se.
• a plate is then deposited on the upper face of the products before embedding the top plate.
• the angle of the bases of the trapezium is for example of the order of 95 ° or 98 °, sufficiently obtuse to allow a good embedding while being close to the right angle to obtain a small battery and vertical.
• Figure 7 shows a plate 51 of double-sided corrugated board with a thickness between 1 and 3.5 mm, 330 g / m 2 , made from three sheets of paper 100g / m 2 . In other embodiments, it is used three sheets of grammages 90g / m 2 , see 80g / m 2 . This light weight paper was not used for the tray cartons of the prior art because it was considered too weak, especially for handles and vertical compression.
• the plate 51 has four side walls 52, 53, 54 and 55 and a bottom 56.
• the two opposite side walls 53 and 55 are identical and comprise three parts, namely two rectangular flaps 57, 58 respectively integral with, and of the same height the adjacent side walls 52, 54, and a rectangular flap 59 connected to the bottom 6 by an intermediate band 110. More precisely the intermediate band 110 has lateral edges 111 sloping outwards with respect to the fold lines 112 with the bottom, and have a shape at an angle, for example with the vertical angle between 5 ° and 45 °, for example 10 °.
• the flaps 57 and 58 may, for example, have an L shape, for example an inverted shape, the main leg of which is located on the side of the corresponding adjacent flap 52 or 54; which notably allows a better guidance of the flat blank towards the training plan.
• the flap 59 further comprises a longitudinal flap 112 forming a rim on a portion of the height of said flap for example one third or half of said height.
• the flap 113 is folded over the flap to form the rim around the double junction line 114 along the entire length of the flap.
• Each flap is provided with a central recess 115, for example of oval shape, of a size allowing gripping by the hand of a user, this obviously being located just below the rim once it folded and glued on the inner face of the corresponding side wall.
• This handle has for example a lower side coinciding with the lower edge forming fold line 116 of junction between side wall and bottom.
• the two other lateral walls 52 and 54 comprise a band 117 at an angle, junction with the bottom ridge, of the type of the intermediate strips 110.
• Each side wall comprises, in a manner known per se, recesses which will allow the ventilation of the products stored in a pallet, namely recesses 118, for example oval, in the opposite longitudinal side walls 52, 54 and small round recesses 119 in the flaps 57 and 8 of the opposite side walls 53, 55.
• the lower part of the tray walls has longitudinal and transverse truncated sections adapted to allow at least partial embedding of the entire bottom of the tray in a lower tray. In the remainder of the description, the same reference numbers will be used to designate identical elements.
• FIG. 9 is a plan view of the blank 120 making it possible to obtain the plate of FIG. 7.
• the blank 120 comprises a central panel formed by the rectangular bottom 56 provided on each side with a flap adapted to constitute at least in part a side wall, namely two opposite first rectangular flaps 59 and two opposite second rectangular flaps 52 and 54, said second flaps being respectively connected on either side by first fold lines 121 to the end flaps 57, 58.
• the flaps 57, 58 are adapted to be folded towards the inside of the tray and to be fixed by gluing on the outer face of the corresponding first flap 59 to form the side walls 53 and 55.
• the first flaps 59 comprise a flap rectangular longitudinal 113 suitable to form a rim on part of the height of said flap as described above with reference to Figure 7.
• the first flaps 59 are also re spectively provided with a central orifice 115 for example of shape oval and dimensions for gripping by a hand of a user who will form handle and which will be located below the rim once the latter realized.
• the future rim is constituted by the flap 113 horizontally connected to said flap 59 for example by a double fold line 114, said flap 59 being connected to the panel by the strip 110 provided on either side with fold lines 116, 116 'parallel to junction with the plate 56 on one side and with the rest of the flap 59 of the other.
• the recess 115 is thus straddling the cut-off strip 10, the lateral edges of which are slanted outwards and extended by the free peripheral edges of the corresponding flap 59.
• the first fold lines 121 are straight and then replaced by free edges 122 at an angle to the sides of the tray opposite, located in their extension, so as to give the lower part of the wall a frustoconical shape in the longitudinal direction to the plate once formed, the small base of the wall being connected to the central panel 56 by a fold line 123 and cut wedge between said fold line 123 and a parallel fold line 124 connected to the remainder of component 52 or 54 corresponding.
• a blank makes it possible to form a plate provided with a bottom having a trapezoidal section in the transverse and longitudinal direction.
• the flutes are parallel to the flaps provided with side flaps.
• FIG. 10 shows a variant 130 of the blank of FIG.
• FIG. 11 shows another variant of the blank 130 'of FIG. 9 comprising three recesses on the cutaway 110, namely a first central recess 115' allowing the user to pass two fingers, and two recesses, for example circular 115 '', also allowing gripping by a finger of the user who has the choice to grab the tray.
• FIGS. 12, 13 and 14 show a plate 140 of the mandrel machine according to the embodiment of the invention more particularly described here suitable for allowing the formation of the plate of FIG. Blank 141 horizontally between mandrel 142 and plate 140 are known per se and are not described further. Furthermore, and without it being necessary to refer to a specific figure, the blank to be formed in a tray is prepared beforehand by gluing the ribbons.
• the plate comprising two longitudinal side flaps 52, 54 opposite respectively provided with flaps end 57 and 58, and two opposing transverse side flaps 59 each having a longitudinal flap 113
• the machine further comprises gluing devices for depositing lines of adhesives during the supply of a blank on said transverse flaps and / or the longitudinal flaps and pressing members provided for applying the longitudinal flaps to the adjacent transverse side flaps to form ribbings.
• the pressing members comprise for example at least one longitudinal vertical plate arranged to press the bottom panel on the bearing face at a distance from the junction line with the corresponding transverse flap, and means for folding and plating the longitudinal flap. comprising an application cylinder arranged to fold said flap on the adjacent flap.
• the blank positioned for example above the support plate 140 of frustoconical transverse and longitudinal sections (see Figure 14), it is moved upwards to form the bottom of the package (see Figure 12). ) via pusher means 143 integral with the plate and plating arms 144 provided at their end with a plating roller 146 on the walls 145 of the mandrel. More precisely, the plating arms 144 are arranged to move vertically between an erased position 147 and a plating position 148, obviously 149 (see FIG. 14) being provided in the cut corners 150, of the plate to allow the said arms to pass through. their rollers, the other two lateral edges 151 obliquely of the plate being for example continuous.
• the mandrel 142 is retractable in both longitudinal and transverse directions, by means of jacks 152 secured to plates 153 against internal pressure, to form the package with the blank 141.
• external pressure for example cylinder
• the packages are filled with products whose total height inside each tray is less than the total height of the side walls of the package.
• each package comprises two plies of two rows of containers, for example yogurt pots, connected to each other in the upper part of each of the plies, in a manner known per se.
• the respective height dimensions h of the containers and the plate H are such that the upper part of the container of the top layer is at a distance less than the total height H (2h ⁇ H).
• the bottom of the walls of the upper plate is embedded in the walls of the lower plate, so that the bottom of said upper plate rests on the products, for example via a plate , and not on the side walls of the plate 1. This allows lowering of the loads of the upper trays independent of the strength of the carton, since it is the products that support the weight of the trays above.
• the present invention is not limited to the embodiments more particularly described.
• the packaging comprises more than two layers of superimposed products and / or those where the wrapping is made towards the outside of the component concerned and not towards the interior and / or where the flaps are glued inside said flap provided with the rim.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cartons (AREA)

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• 2004
  • 2004-11-25 PL PL04805549T patent/PL1704094T3/pl unknown
  • 2004-11-25 WO PCT/FR2004/003020 patent/WO2005051772A2/fr not_active Ceased
  • 2004-11-25 AU AU2004293224A patent/AU2004293224B2/en not_active Ceased
  • 2004-11-25 EP EP04805549.5A patent/EP1704094B8/de not_active Expired - Lifetime
  • 2004-11-25 NZ NZ547861A patent/NZ547861A/en not_active IP Right Cessation
  • 2004-11-25 NZ NZ584464A patent/NZ584464A/en not_active IP Right Cessation

Non-Patent Citations (1)

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