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
  • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
  • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
  • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
  • B65D77/062—Flexible containers disposed within polygonal containers formed by folding a carton blank
  • B65D77/064—Flexible containers disposed within polygonal containers formed by folding a carton blank comprising discharging means formed by cutting a part, e.g. a corner, of the flexible container

Definitions

• the present invention relates to a foldable packaging for dry, granular, pulverulent or liquid products, of the type comprising a foldable box containing an internal flexible envelope in which the product is sealed and provided with a resealable pouring spout.
• Document FR-A-2,071,733 discloses a cardboard packaging provided internally with a flexible bag.
• the packaging in the form of a box, includes a flap which can be opened during first use in order to extract part of the sachet which the o " cuts to form a pouring spout.
• Such a pouring spout, shaped in the material of the box, is rigid or semi-rigid and therefore does not have the flexibility that would be desirable to best conform the spout for optimal flow of the product.
• the present invention aims to eliminate the drawbacks of known devices and to propose a new design of spout, more practical and flexible to use, more effective, suitable for filling the bag or internal envelope as well before its insertion into the box. packaging that are inserted during the installation and do not require special machines for placing the internal envelopes and making the spouts.
• the subject of the invention is a foldable box with an internal flexible envelope with a resealable pouring spout, comprising a rigid or semi-rigid external envelope comprising four faces each extended by two opposite closing tabs and an internal envelope in the form of a sheath. tubular sealed transversely at its upper and lower ends, characterized in that: - the pouring spout is formed in one of two upper corners of the tubular sheath defined at the ends of the transverse sealing, using a cutout made in a semi-rigid material and placed flush with said seal and straddling the line joining the ends opposite the upper and lower seals, and
• the upper closing tabs of the outer envelope are provided with means of access to said corner provided with said cutout, while the side wall of the box is provided with. right of said cutout, a detachable flap forming a notch allowing the passage and deployment of the spout.
• Such packaging has a number of substantial advantages.
• the design of the outer casing is simplified and that of the internal casing is not modified since the beak is actually shaped thanks to an added element, in particular by gluing, which is a simple cut, special in its configuration but simple to carry out, easily applicable on the internal flexible envelope by a simple machine of the labeling type, before sealing said sheath.
• the cut has a general rectangular or square shape and is provided with a groove facilitating its shaping, with pre-cuts serving as a guide for tearing the internal envelope in line with the corner point forming a pouring spout. and peripheral notches allowing a hooking of the cutout on the edges of said passage indentation and deployment of the pouring spout.
• the cut has, for example, a width which is appreciably equal to that of the small lateral faces of the external envelope and, in the folded position of the box with its internal envelope filled, lies astride the edge of the box delimited between a small face side and the top face.
• the part of the cut folded back parallel to the top face of the box is advantageously sandwiched between one of the long side flaps, which is provided with an appropriate cut allowing the deployment of the spout, and the two other adjacent flaps of which said access means are constituted by detachable parts produced by pre-cutting.
• Said precuts used for guiding the tearing of the inner envelope are constituted by a line, for example in a V, delimiting the spout orifice of the spout arranged in the center and in the upper part of the cut, the ends of which end in notches located opposite a similar notch forming a tear-off primer formed in the upper sealing strip of the internal flexible envelope.
• Such a design of the pouring spout retains its total integrity in the flexible casing, in particular in terms of mechanical strength and sealing, which in no way are weakened or weakened.
• the wall of the pouring spout is in fact constituted by the wall of the internal flexible envelope, in one of the upper corners, after cutting the latter by tearing, the externally plated cutting acting as a mold. comforter giving its volume, its positioning and its resistance to said pouring spout.
• the semi-rigid nature of the cutout material as well as the shape and positioning of the spout in the notch allow the spout to be easily closed after use by simply flattening the outlet orifice, the spout retaining its external shape.
• the pouring spout is formed simply by adding a cut in the general shape of a label to the external face of the internal flexible envelope, this cut is advantageously applied using a labeling machine, either flat on the sheet to constitute said envelope, before the formation of the tubular sheath, or after formation of the sheath and completion of the longitudinal sealing and before the upper transverse sealing.
• Figure 1 is a partial perspective view of an internal flexible envelope to be inserted in a foldable cardboard box, provided with a cutout according to the invention constituting a pouring spout;
• Figure 2 is a plan view of the blank of Figure 1;
• - Figure 3 is a partial perspective view of the upper part of the flexible envelope of Figure 1 in parallelepiped shape;
• - Figure 4 is a plan view of a cardboard blank to constitute a box or outer envelope according to the invention and capable of receiving the flexible envelope of Figure 3;
• FIG. 7 is a . enlarged detail view of the packaging complex of Figure 6;
• Figure 8 illustrates the external appearance of the packaging of the invention, completely closed;
• Figures 9 to 12 illustrate various phases of opening the box and forming the spout;
• Figure 13 illustrates the mode of reclosing the pourer be after use
• Figure 14 illustrates an alternative embodiment of access means to the spout provided on the box.
• FIG. 1 shows a flexible bag made up of a tubular sheath 1 formed from a thin sheet of a suitable thermoplastic material, sealed along a longitudinal strip 2 parallel to the generatrices of the sheath and two transverse strips, the upper band 3 is only shown.
• the sealing strip 3 is perpendicular to the strip as well as, at its two ends, to the line symbolized by joining the two opposite ends of the upper sealing strip 3 and lower respectively.
• the heat-sealed sheath 1 thus formed defines, at the two ends of the transverse sealing strip 3 when it is in volume, two corners 5 of generally conical shape, one of which is intended to constitute a pouring spout.
• the cutout 6 has a generally substantially square shape, is provided with two perpendicular central grooves 7 and 8, with a V-shaped notch in the middle of the upper edge 10, V-shaped notches 11 in the middle of the lateral edges 12, of two joined V-shaped notches 13, in the middle of the lower edge 14 and of a V-shaped pre-cut 15 in the upper half-part 6a of the cut, the ends of said pre-cut 15 are ending with V notches 16 on the upper edge 10.
• the notches 11 are connected, by grooves 17, the notch 9 and, by grooves 18, to the twin notches 13 the grooves 17 and 18 extending along diagonals of small squares delimited by the grooves 7 and 8.
• the twin notches 13 define between them a point 19 whose sides are in alignment with said grooves 18.
• One of the sides of the notches 16 is in alignment with the pre-cut line in V 15 so as to delimit a detachable part 20 of the cut 6, including the notch 9 and having a V shape.
• FIG. 1 two generators of the sheath-bag 1 corresponding to the two edges of the envelope 1 are shown at 21 once filled with product and shaped (FIG. 4) in a parallelepiped of dimensions corresponding to those of the cardboard box which must welcome him.
• the cutout 6 has a width equal to the distance between the two generators 21 above, that is to say substantially the width of the small lateral side of the box in which will be received the flexible envelope l.
• the cutout 6, advantageously coated on one side with an adhesive substance, is glued to the external wall of the sealed envelope 1 so that, once all the seals (2,3 ⁇ have been made, it is astride said line 4, with the edge 10 flush with the transverse sealing strip 3.
• the crease 8 coincides with the line 4, the edges 12 with the generators 21 and the crease 7 with the future edge of the envelope 1 filled and shaped as a parallelepiped (FIG. 4) corresponding to the internal dimensions of the receiving box (FIG. 5).
• the cutout 6 is advantageously applied to the envelope
• FIG. 3 illustrates the flexible envelope 1 filled with a dry, granular, pulverulent or liquid product and shaped into a rectangular parallelepiped with a view to its insertion in a folding parallelepiped box.
• the envelope 1 is shaped so as to define two small lateral faces, one of which (22) is delimited by the lines or edges 21 and the upper face of which is a rectangle in the axis of which extends the sealing strip 3, folded against said upper face.
• the corner 5 is flattened in the shape of a triangle by folding down the angles of the cutout 6 around the grooves 17.
• the notch 9 thus releases the extreme tip 23 of the envelope 1.
• the corner 5 thus flattened will be folded against the upper face of the rectangular envelope 1 during insertion into the foldable box and closing of the latter. .
• FIG. 4 represents a box according to the invention intended to receive internally the flexible envelope of FIG. 3.
• the cut and creased cardboard blank shown in this FIG. 4 comprises two large lateral faces 24 and 25, two small lateral faces 26 and 27, all extended at each end by closure flaps.
• the structure of the box is traditional and only the upper closure flaps and one of the small side faces are shaped, at the height of the pouring spout carried by the flexible internal envelope 1, so as to allow access to the spout and its deployment.
• said small lateral face (26) has a detachable part at its upper end formed by a flap 28 of generally triangular shape with the tip down.
• the pre-cut line in V 29 of said flyer cuts the upper edge 30, corresponding to the edge 7 d parallelepiped volume shown in FIG. 3, at a distance from the adjacent angles of the box, the width d flap 28 of the right of the edge 10 being substantially less than the width of the face 26.
• the upper flap 31 attached to the face 26 comprises a detachable part formed by a flap 32 of trapezoidal shape delimited by a pre-cut line 33 joining the line 29 on the edge 30 and extended by a cut 34 in shape d half moon.
• the two adjacent upper flaps, 35 and 36, attached to the two large lateral faces 24 and 25 respectively, are specially arranged on their edge opposite the flap 31.
• the flap 35 has a detachable part 37 and a half-moon cutout 38, corresponding to the elements 32 and 3 of the flap 31, the two assemblies being superimposed on the closure. of the box and the flaps 32 and 37 forming the pendant of the flap 28 relative to the edge 10.
• the flap 36 has a trapezoidal notch 39 whose opening is substantially less than the width of the flap 36 for purposes which will be explained with reference to FIG. 7.
• Figures 5 to 8 illustrate the closing phases of the box after insertion of the flexible filled envelope 1 conforming to the interior volume of said box.
• the flattened corners (5) being folded outwards, the flap 36 is the first to be put in place, then, the corner 5 (FIG. 6) is folded over said flap 36.
• the notch 39 is dimensioned and arranged so that once the corner 5 folded against the flap 36, then the flap 31 folded against the corner, the latter is sandwiched and secures the inner envelope 1 of the outer cardboard envelope.
• the internal face of the flap 36 can be adhesive-bonded to secure the envelope 1 of the box.
• the flap 35 is put in place ( Figure 8) last, so that externally the box has a traditional parallelepiped shape with smooth faces and without extra thickness. Only the half-moon 38 appears on the top of the box, which allows the removal of the flaps 37, 32 and 28 ( Figure 9) to access the spout. The removal of the flap 32 by means of the half-moon 34 causes, by continuing the movement, that of the adjacent flap 28.
• the notch 9, formed in the part 20 of the cutout intended to be removed during the first use of the pouring spout, has the role of clearing the external tip of the corner 5 and of facilitating the triangular folding of the upper half-part
• the packaging according to the invention can then be stored in this state ( Figure 13) and be reused at any time. Just pull on the strip 3 to reopen the spout as shown in Figure 12.
• the role of the grooves 7 and 8 is to allow appropriate placement of the pouring spout (during the insertion of the casing 1 into its box) and optimal shaping of the pouring spout during its deployment and locking. in place.
• the design of the spout orifice that is to say the determination of the shape and location of the pre-cut 15, is chosen according to the nature and the viscosity of the product which must contain the envelope 1, said cutout 15 being able to be, for example, along a V with curved branches or a half-moon.
• the V-shaped pre-cut can extend over the entire upper half of the cut 6, the point of the V coinciding with the intersection of the grooves 7 and 8, the angle formed by the V can be variable. This latter embodiment allows folding at 90 °, along the crease 7 and in the plane of the upper flaps (35, 36) of the box, parts of the cut 6 flanking the V-shaped pre-cut 15 '.
• the establishment of the cutout 6 on the envelope 1 can be done during the formation, from a sheet of thermoplastic material, of a tubular sheath transversely sealed from place to place to form a string of sachets , in the well known manner, said sachets being filled simultaneously with their production.
• the blanks 6 are then deposited at the desired locations on the external face of the tubular sheath, at the filling station, using a conventional labeling machine.
• the internal envelope 1 is easily separable from the external cardboard box, which allows the selective subsequent recovery of the two materials constituting the external envelope on the one hand and the inner envelope on the other hand.
• the envelope 1 can also be filled under vacuum or under nitrogen or other neutral gas.
• the invention is obviously not limited to the embodiment shown and described above but on the contrary covers all the variants in particular as regards the shapes, dimensions and nature of the cut-out 6 attached, the locking means of the latter in the notch (29) formed in the wall of the external envelope during the deployment of the pouring spout through said notch, as well as the means of access to the pouring spout provided on the face and closing flaps of the outer envelope.
• the invention obviously applies to square boxes, that is to say with side faces 24 to 27 of the same width.
• the internal envelope 1 is then placed in the external envelope with its upper seal 3 in the direction of large faces.
• the corner carrying the pouring spout and the homologous cutout of the cutout 6 of the embodiment shown extends over the entire width of one of said large faces (24,25) and the homologous shutter of the shutter 28 has a width, is straight from the upper edge of said large face, substantially less than the width of the large face, similarly to said flap 28.
• the other upper flaps are shaped so as to allow access to the spout under the same conditions as in the embodiment shown, the two small flaps being folded down before the two large ones.
• the flexible envelope 1 has two opposite upper corners folded inwards. One can consider a different fold of the flexible envelope, without folding the upper coil 5 carrying the spout, in the case where the flexible envelope is not completely filled. Said corner 5 is simply slightly pressed towards the inside of the flexible envelope 1 while being pressed against the upper part of the small side 26.
• the flexible envelope l may have at the ends transverse seals 3 no longer parallel but orthogonal, like a berlingot. This facilitates the positioning of the spout on the face of a large side (24,25) when the internal envelope 1 is threaded into the external envelope.
• the detachable flap 32 ′ formed on the upper flap 31 extends beyond the small lateral face 26, the pre-cut lines 33 ′ and 29 ′, respectively of the flap 32 ′ and of the detachable flap 28 ′ from face 26, joining on a line 30 ′ parallel to edge 30 and located on face 26.
• the cutout 6 will be positioned on the flexible envelope 1 so that the grooving 7 is located substantially at the level of said line 30 ′. This keeps a spout with sufficient opening in the case of a side face 26 of reduced width, the blocking of the spout on its sides (at the hatched areas 41 of Figure 14) is better.

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

Applications Claiming Priority (3)

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• 1992
  • 1992-03-03 FR FR9202755A patent/FR2688200B1/fr not_active Expired - Fee Related
• 1993
  • 1993-02-26 WO PCT/FR1993/000198 patent/WO1993017931A1/fr not_active Application Discontinuation
  • 1993-02-26 EP EP93905434A patent/EP0628009A1/de not_active Withdrawn
  • 1993-03-03 CN CN 93102307 patent/CN1079439A/zh active Pending

Non-Patent Citations (1)

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