EP3481734A1 - Boite enveloppe formee par pliage cintrage d'un flan prepare - Google Patents
Boite enveloppe formee par pliage cintrage d'un flan prepareInfo
- Publication number
- EP3481734A1 EP3481734A1 EP17745395.8A EP17745395A EP3481734A1 EP 3481734 A1 EP3481734 A1 EP 3481734A1 EP 17745395 A EP17745395 A EP 17745395A EP 3481734 A1 EP3481734 A1 EP 3481734A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- folding
- blank
- edge
- flap
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B65D5/008—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 the container body having a pyramidal shape
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
- B65D65/10—Wrappers or flexible covers rectangular
- B65D65/12—Wrappers or flexible covers rectangular formed with crease lines to facilitate folding
Definitions
- the present invention relates to a casing box formed by bending bending of a blank prepared, that is to say cut and scored, of light cardboard.
- the invention relates in particular to a pyramidal-shaped box-envelope for receiving products to be packaged, made by folding a carton blank, prepared, having a location on which are arranged the products to be packaged.
- One of the solutions consists in placing the products on a support of rectangular shape or more generally square, whose sides have dimensions traditionally varying between 1 1 cm and 17 cm, and which one wraps in a sheet of paper formed in pyramid called package mounted.
- This packaging technique is relatively delicate because it takes great skill to achieve this folding of the paper pack mounted package having a presentable appearance, not crumpled, but with straight and taut edges.
- the object of the present invention is to develop a packaging box that is simple to make, quick to form, inexpensive and that results in a functional and aesthetic packaging that enhances the products while facilitating their placement in packaging and their extraction. after opening the package.
- the subject of the invention is a box-envelope of the type defined above, characterized in that
- two opposite sides of vertices are sides materialized by a folding segment comprised between the vertices
- the two other opposite sides are each defined by the lateral segment which is a segment of the straight line passing through the vertices homologous to the materialized sides, whose folding edges, coming from the vertices as well as joining the respective edge of the blank,
- the panel has a fold line coming from each vertex of the lateral segment and situated beyond the limit segment, coming from this vertex on the right,
- Two flaps each border a folding segment and are delimited by the two folding edges joining the respective edge of the blank
- each folding edge delimiting the flap being situated in the angle between the materialized side and the limit segment, the folding edge being the bisector of the angle between the folding line and the materialized side, coming from this same vertex,
- This box-envelope has the advantage of being of a particularly simple embodiment since it is made from a prepared cardboard blank.
- the carton if sufficiently rigid, forms by its location delimited by a quadrilateral, the surface to directly receive the products to be packaged.
- the blank is prepared by its flaps depending on the structure to be given to the pyramidal box-packaging.
- the box-envelope takes the most different forms of appearance by covering and protecting the products of the 'location.
- the box-envelope not only serves for the transport of the products but also for their presentation and their development.
- the prepared blank is naturally reversible since the grooved segments are reversible hinges. This allows to use or one or the other face of the blank, if necessary depending on the color of the face of the blank or its decor.
- the box is carried by holding it from below but it is also possible to join the top of the pyramid structure to put a fastener or pass a fastener through two orifices cut out in the blank at the locations of the panels that will face after folding the blank.
- the two raised panels are initially pinched to be joined during the folding of one and the other flap, the partial crushing of the top of the panels disappears after the release; the elasticity of the cardboard blank then restores the arched shape of the top of the sides of the box-envelope.
- the box-envelope has the advantage, despite the extremely simple structure of the prepared blank, to allow a realization of the structure by a natural movement of folding and the almost automatic passage (imposed by the creasing and the flexible but not extensible character) of the panels for the folding movement of each flap.
- the flexibility of the carton of the blank generates an envelope shape with more or less rounded edges, both on both sides of the location other than those of the flaps and the curved edges from the vertices of the location.
- This curved shape of the edges around the sides of the quadrilateral also exists for the portion of the panels folded on each side flanked by a flap.
- the bending will be more or less strong (radius of curvature reduced) according to the positioning of the lines of folding.
- At least some of the crimping lines are slotted.
- the lateral segment is grooved.
- the materialized fold of the one or both lateral segments and / or that of the folding lines breaks the bending and performs the folding of the edges in a dihedral form.
- box-envelope as defined above is obtained from a prepared blank having in the general sense a symmetry of rotation of the lines since, at each vertex of the quadrilateral bordering the location, are associated "symmetrical" elements. »Bending and folding:
- the invention particularly relates to a box made with a cardboard blank which may be of a very low basis weight and which, at first sight, would not be suitable for making a box.
- a blank and such a box-envelope can be envisaged without difficulty and the box-envelope provides all the functions and objectives already defined above.
- This box-envelope is made with a cardboard blank around a rigid support of rectangular shape on which are arranged the products to be packaged.
- the blank is a light cardboard cut and scored with a rectangular location and subdivided into quadrants by a first and a second axis intersecting at the point contained in the rectangular location with corners and edges parallel to the axes so that each face of the blank contains a corner, the adjacent quadrants have symmetrical geometric shapes in pairs relative to the first axis and the second axis, the quadrant pairs and on either side of the first axis share a gripping plate having one edge located on the edge of the blank, straddling the second axis and defines vertices on the line bordering the quadrant, each quadrant is subdivided into a triangular flap from the top of the plate and whose base is derived from the corner contained in this quadrant and having for its first side the bending line, a flap connected to the edge, parallel to the second axis and joining the side of the blank, its side
- the present invention thus makes a combination between a box and a mounted package, that is to say a relatively rigid package formed with a cardboard, here light cardboard or equivalent material, and secondly, a folded paper sheet following a pyramid shape.
- the invention has the advantage of making it possible to achieve this packaging extremely fast and especially almost automatic without the skill and experience of the person who makes the packaging does not intervene significantly.
- this packaging folding or closing automatically requires a simple learning as any simple gesture.
- the packaging box allows a great diversity of shape between a pseudo-pyramidal package, whose reference triangles or opening triangles are relatively closed and packaging boxes whose flaps overlap only partially leaving openings in the form of windows or gills, giving the package an airy appearance.
- the overall symmetry of the shapes ie the presence of a flap on each quadrant, does not impose the dimensional symmetry of the four quadrants, so does the invention make it possible packaging having a totally asymmetrical shape despite the fundamental symmetry of the shapes of the blank before folding.
- the prepared blank allows to shift the top of the package from the top located on the extension of the perpendicular to the center of the location.
- the blank used for the realization of the box-packaging can even be a refined transformation of a symmetrical layout of shape and dimensions or simply symmetrical form, which gives a box-envelope always closing in the same way by the simple folding each of the two flaps to pass under the surface-envelope while having a particularly surprising aesthetic effect.
- the base has a length less than the base of the reference triangle and the free side stops on the basis of the reference triangle. This leads to a box-packaging symmetrical shape and whose flaps overlap perfectly effectively separating the inside and outside of the box-envelope.
- the base has a length less than that of the base of the reference triangle and the free side exceeds the base.
- This embodiment makes it possible to inflate the edge of one, two, three or four triangles of the four quadrants of the blank to result in openings of more or less accentuated shape, more or less symmetrical by rotation or asymmetric.
- a wafer has a cut forming a tongue constituting a lock and continuing upwards by a spacer lined with two teeth separated from the spacer by notches, a wafer having a cut forming a passage in a homologous position at the tongue when the plates are superimposed, the tab forming a latch being pushed through the cutout of the other plate so that the teeth of the tongue come on the front of the cutout of the other plate, the notches of the teeth straddling the edges of the cutting, to form the base of the dihedron platelets joined by the upper edge and imposing the form of dihedron assembly of the upper edges, assembled.
- This shape of the two plates and their locking tab engaged in the cut allows to have a fixed top of the package, which is guaranteed a certain aesthetic, continuous over time and becoming a brand image or making the box-packaging more pleasant since of form more regular and finished that if the two plates were assembled one with the other.
- the notches are guided astride the two ramps so as to drive the small base of the trapezoidal spacer in the transverse locking notch of the cutout of the wafer.
- This characteristic makes it possible to block the locking of the two wafers without requiring any particular intervention, outside if not the passage of the finger through the two plates to form this dihedral structure or triangular section.
- FIG. 1 is a schematic plan view of a blank prepared according to the invention
- FIG. 1A is the plot of the slotted lines of the flaps and the contour of the prepared blank
- FIGS. 2A-2D show different stages of folding of the blank to obtain the envelope box:
- FIG. 2A shows the first step of raising the two panels above the location
- FIG. 2B shows the folding of the flap and the movement of tightening and rotation of the corresponding edges of the two raised panels
- FIG. 2C is an additional step of folding the flap
- FIG. 2D shows the final step of folding the flap under the location
- FIG. 2E is a perspective view of an exemplary box-envelope made by the folding operation of FIGS. 2A-2D,
- FIGS. 3A-3D show different examples of blanks prepared with varying shape blank contours and flaps of slightly different shapes, these figures showing only the slotted lines, the lines being simply sketched.
- FIG. 4 is a view of a carton blank cut and grooved to form an envelope box according to the invention.
- FIGS. 4A-4C are partial views of the blank of FIG. 1 showing the embodiment of the shutter bordering a face of the envelope box
- FIGS. 5 to 7 show the folding steps of the blank of FIG. 4
- FIGS. 7B are front and side views associated with FIGS. 5 to 7 and showing more precisely the geometry of the various stages of formation of the box
- FIGS. 6-8 show different stages of the formation of the casing-box from the cut and grooved blank of FIG. 4,
- Figure 5 shows the first step of raising the two main panels around the blank around the two edges of the site
- Figure 6 shows a second step of pushing the flap to close the corresponding side of the casing box
- Figure 8 is a perspective view of the closed-shell box
- Figures 9-15A are views of the two plates forming the latch of the upper part of the box:
- FIG. 9 is a front view of the first plate provided with the cutout forming a passage
- FIG. 9A is an axial sectional view of the plate of FIG. 9,
- FIG. 10 is a sectional view of the second plate forming the locking tongue
- FIG. 10A is an axial sectional view of the plate of FIG. 10,
- FIG. 11 is a front view of the two plates applied against each other, showing the locking tab appearing in the passage of the first plate,
- FIG. 11A is an axial sectional view of FIG.
- FIG. 12 is a plan view of the relative arrangement of the two plates for allowing the passage of the locking tongue in the opening of the plate which covers it,
- FIG. 12A is an axial sectional view of FIG. 12,
- FIG. 13 shows the next step of engagement of the locking tab in the opening of the other wafer
- FIG. 13A is an axial sectional view of FIG. 13,
- FIG. 14 shows the final step of the flat engagement of the locking tongue in the opening of the other plate, the two plates being still applied against each other
- FIGS. 15 and 15A show the arrangement of the two plates spaced dihedral, corresponding to the final position of the assembly of the two panels of the blank with the locking means formed by the plates.
- the subject of the invention is a blank of cardboard 100 prepared to form a pyramidal box-envelope around products to be packaged, for example food products, pastries or more generally and according to the nature and decor of the blank of cardboard, a box-packaging or overpack of products to highlight, luxury products, possibly already placed in a packaging or a box of very small dimensions, to highlight them by their particular presentation.
- the blank 100 presented here as a rectangular surface 1 has a location 3 in the form of a quadrilateral Al -A4 in this general presentation.
- the materialized sides A1A2 / A3A4 are each adjacent to a flap R1, R2 of trapezoidal shape, delimited by two sides constituting folding edges LR1, LR2 or LR3, LR4 also materialized, for example slotted.
- the folding edges LRi necessarily straight, join the sides of the carton blank 100.
- the other two opposite sides A2A3 or A4A1 of slot 3 are simply represented by two lateral segments SL1, S12 being part of a straight line of construction D 1, D 2, passing one through the vertices A2 and A3 and the other by the vertices A4 and A1.
- the cardboard blank 100 prepared at a location 3 simply materialized in that it is between the two sides materialized SM 1 / SM 2 of the two flaps R1, R2 whose edges LPi are also materialized the fourth side being the edge of the blank 100.
- the blank 100 has two panels Pal, Pa2 arriving to the side segment SLi and the two folding edges PLi of the two flaps Ri; each panel Pal, Pa2 contains a drawdown line LRXi from the top A2 or A3 for one and A4 or A1 for the other.
- the draw line LRXi from a vertex Ai is a straight construction segment which, by folding the Pai panel around its lateral segment SLi to form the box enveloping the slot 3, will come to the materialized side resulting from this same vertex or in the vicinity of this side as will be described later.
- the choice of the orientation of the drawdown line LRXi defines the folding edge LPi associated with the flap R1, R2: the folding edge LPi is the bisector of the angle between the drawdown line LRXi and the materialized side SM 1 / SM2 from the same vertex Ai.
- This drawdown line LRXi is a chosen line of consolidation but it is not necessarily materialized by a creasing, as the lateral segment SLi.
- the folding around the folding edge LPi of a flap Rj can be done in various ways:
- FIG. 1A shows the more general example of the prepared blank 100, revealing only the materialized segments (grooved). These segments can be simple impressions without printing in black or in a particular color in the case of the simplest realization of the blank. In general, these segments do not appear so easily as the plot is only slotted.
- the same contour cutting phase for example the rectangular contour as shown, or a particular contour with cut corners 2, a cut mark of each flap more prominently indicating the two materialized sides bordering location 3; it may be small cuts 31, 32 does not weaken the blank nor reducing its shaping properties.
- the prepared blank 100 as shown in FIGS. 1, 1A makes it possible to produce pyramidal box-shell structures having the most diverse shapes ranging from shapes without any apparent symmetry to partially symmetrical or totally symmetrical shapes according to axial symmetries or symmetries. central (rotational symmetries).
- the size of the panels Pai and the position of the lines of drawdown LRXi make it possible to define within these asymmetries or symmetries, shapes more or less inflated or tightened on the location 3 and the products and also the more or less open overlap or tightened folded edges of Pai panels.
- the folding of the Pai panels forms more or less curved zones around the segments SLi and also around the materialized segments SMi, up to a dihedral fold.
- the prepared blank 100 is reversible because the materialized segments function as hinges, playing in both directions of folding. This is advantageous because in a simple manner and with the same blank, two-color envelope boxes or two prints can be produced.
- Figures 2A-2D show the steps of folding the prepared blank 100 to make a box-envelope.
- the two panels Pal, Pa 2 have been raised by bending the blank along the lines D 1, D 2, the flap R 1 still being flat in the plane of the location 3.
- the raised edges are preferably held temporarily with one hand (arrow Fl).
- the flap RI is folded around its materialized segment SM I.
- the movement causes traction on the sides of the panels, pulling them towards each other by a sort of winding (arrows RI, R2).
- FIG. 2C shows the continuation of this folding movement of the flap RI and the tightening of the edge of one panel Pal to that of the other panel Pa2.
- Figure 2D shows the end of this movement: the flap RI and the parts of the panels Pal, Pa2 are folded under the location 3 and are fixed there, for example by a piece of adhesive tape.
- FIGS. 3A-3D show some examples of 100 / 1-100/4 prepared blanks having irregular or partially symmetrical (in the usual sense of the term) outlines, flaps and panels with circumscribed, polygonal, straight outlines, or with certain rounded sides. These prepared blanks have in common a rectangular location defined by the lines D 1, D 2 which are here parallel. The references shown in FIGS. 3A-3D have been reduced to the minimum necessary for understanding so as not to overload the figures. 100 / 1- 100/4 prepared blanks produce more or less regular and partially symmetrical pyramidal packaging boxes while the regular shape of the BEI box of Figure 2E is obtained with a prepared blank, but shown with symmetrical shape.
- Figure 4 and the following figures show a particularly symmetrical rectangular blank to achieve a very rigid box-envelope structure with a very light cardboard.
- the panels are here decomposed more elemen- tarily to take account of the partial stiffening of the outer edge L1, L3 of each of the panels.
- drawdown lines LRi but also guidelines joining the vertices of the location 3 at the ends of the stiffened portions of the two edges of each panel.
- the central part of the panels is described below in the form of blanks Fl, F2.
- the invention relates to a box-envelope made by folding a blank of light cardboard, having or receiving a rigid support on which are arranged the objects to be packaged, for example pastries and around which the blank is folded.
- the blank 100 is shown flat in FIGS. 4, 4A-C; it is cut in a light cardboard, for example a cardboard of 80-120 g or equivalent material by its behavior and its physical characteristics.
- the blank 100 is cut in a rectangle one side of Li, L2, L3, L 4 whose corners 2 are truncated to a shape which will be described subsequently.
- the blank 100 which is decomposed into geometric shapes is symmetrical or at least globally symmetrical by the shapes both with respect to a longitudinal axis XiX2 and with respect to a transverse axis YiY2 so that the description may be limited, as the case may be , to a single quadrant Qi (Q i) lying between the two half-axes OXi, OYi intersecting at the point O.
- the folding-bending of the blank 100 is around the location 3 which is a rectangle (usually a square) whose outline is also that of the not shown support on which the objects are placed.
- the location 6 has corners Ai (Ai-A 4 ) defining the folding edges around the objects not shown and which correspond to the two materialized sides and the two side segments of Figure 1 and the general description.
- edges Li, L3 of the blank 100 are each provided with a locking plate and gripping P 1? P2 having an edge or vertices SM i, SM 4 or SM2, SM3 located on the edge Li or L3 of the blank and constituting the ends of the double edge ASi, AS2 of the top of the box-envelope.
- a bending line LCi connects a vertex SMi to the homologous corner Ai of the location of each quadrant Qi delimited by the axes X1, X2 and Y1, Y2.
- a triangular flap Vi borders the LCi bending line.
- the second side of the flap Vi and the free edge BDi and the base Ri of the triangular flap Vi come from the corner Ai.
- the other end Ci of the base LRi is located on the other edge Li + 1 of the blank 100.
- edge AiAi + 1, (AiA2) following the location 3 is bordered by a flap Ri, each side of which is a fold line LPi, LPi + 1, bisecting the angle between the respective base LRi, LRi + 1 and edge Ai, Ai + 1 (also called “materialized side").
- the flap Vi and the flap Ri are connected by a bellows Si bordered by the two lines LRi, LPi which are the fold lines LRXi of the general embodiment.
- the edges of the slot 3 are slotted segments, aligned with the auxiliary axes AX 1, AX 2 parallel to the first axis X 1, X 2, but having only a geometric meaning, analogous to the lines D 1, D 2.
- the base LRi and the fold line LPi are also slotted.
- the other parts of the blank 100 are made in a similar manner.
- the envelope box is formed by first raising the pair of quadrants (or panels) on either side of the first axis Xi, X2 around the auxiliary axes AX1 and AX2 to bring together the edges Li, L3 of the blank 100 and coincide the edges of the plates Pi, P2 to prefigure the overall geometric shape of the envelope box based on the envelope 3 and as an upper edge the meeting of the two edges ASi, AS2 corresponding to segments SMi SM 4 or SM2 SM3 platelets Pi, P2.
- the plates then form a locking and gripping member which mechanically secures the top of the box and allows put it by passing a finger through the aligned openings (not shown) of the two plates Pi, P2.
- the blank is shaped cylinder of triangular section mixtiligne and generator parallel to the axis XiX2.
- one of the flaps Ri is pressed to rotate it around the edge Ai, Ai + 1 which connects it to the location 3.
- the traction generated by this movement pulls the base LRi from the two flaps Vi, Vi + 1 which then fold around their bending line LCi, LCi + 1 and close the opening of the box defined by the opening triangle of sides LCi, LCi + 1 and based on the edge Ai, Ai + 1.
- FIGS. 4A, 4B, 4C The geometric design of the plane plots will be presented hereinafter with the aid of three examples of FIGS. 4A, 4B, 4C.
- the triangular pane Vi is defined from the reference triangle which is the triangle delimiting the lateral opening of the box, remaining between the edge AiAi + 1 and the bending lines LCi, LCi + 1 when the box begins to be formed by the raising of the sides or panels and the meeting of lines Li, Li + 2 (La, L3).
- the reference triangle is drawn from the bending line LCi as a triangle of the opening, which is folded down with a second side LO of length equal to that of the bending line LCi + 1 and for base AiAo of length equal to that of the edge AiAi + 1.
- the triangular flap Vi "fits" into this reference triangle (SMi, Ai, Ao) with its second side LO i arriving by its end Ci on the base Ai, Ao.
- the base of the flap Vi is the folded segment LRi which will be pivoted to be folded over the edge AiAi + 1 so that the flap Vi largely covers the lateral triangular opening of the box; this component Vi is simultaneously open by the homologous flap Vi + 1 folded around its folding line LCi + 1 by the same flap Ri.
- the starting point is the dimension of the slot 3 and the height (slender or squat shape) that the box-envelope must have; the outline of the blank 100 cut and grooved is defined by this flat form of the plot.
- the reference triangle (SMi, Ai, A0) closes exactly the opening that remains between the faces Fi, F2 starting from the edge line Ai, Ai + 1 when the faces Fi, F2 are joined by the edge of platelets Pi, P2.
- the flap Vi does not necessarily have to cover the entire surface of this triangular opening, its base will be a folded line LRI defined by the segment AiCi on the line AiAo.
- the vertex Ci comes to the point Ci as shown in the outline of the circle centered on the corner Ai.
- the folded line LRi is connected to the bellows Si whose apex is the point Ai and the second side is the fold line LPi connecting the bellows Si to the side of the flap Ri.
- This fold line LPi is the bisector of the vertex angle Ai and having for sides the lines LRi and AiAi + 1.
- FIG. 5B shows a variant of the shape of the flap Vi 'with respect to the shape Vi of FIG. 4A.
- the base of the triangle of the flap Vi has been shortened to the segment AiC 1 i shorter than the segment AiCi of the preceding example, which makes it possible to reduce the width of the blank 1 whose edge Li + 1 is then displaced on the line LLi + 1 since the vertex C li as the vertex Ci in the general sense is located on the edge of the blank 1 in the direction YY.
- This variant reduces the overlap surface of the flaps Vi, Vi + 1, which can be a desired effect.
- the flap Vi will be tight and tight in the opening of the box, bordered by the edge line AiAi + 1 since the flap Vi is inscribed in the reference triangle.
- FIG. 4C shows a variant of shutter Vi "which, folded against the opening between the two faces Fi, F2 will take a more or less strongly curved shape.
- the vertex C2i of the flap Vi is led by folding on the edge line Ai, Ai + 1 so that the edge BDi will take an arc shape (curved shape) whose rope in the geometric sense is the straight line segment from point Ci2 'and connected to the top SMi (faces Fi, F2 being folded).
- the folded line LRi ' is “pivoted" around the point Ai beyond the base AiAO, the fold line LPi' bisecting the vertex angle Ai between the lines LRi 'and LAiAi + 1, is also rotated (the pivoting is then equal to half of the pivot angle of the line LRi 'relative to the line AiAO.
- the flaps Vi, Vi + 1 of a pair are generally symmetrical with respect to the axis X1X2, but their parameters as defined above can be different to create the effects of vents, or even windows or open slots if the flaps of a pair do not overlap on the closed side by the triangle (LCi, LCi + 1, Ai, Ai + 1) of the envelope box.
- the junction line of the edges Li, L3 of the blank 1 is located in the median plane MM passing through the axis XiX2 and perpendicular to the plane of the location 3 since the axis XiX2 is the axis of symmetry, and thus the quadrant panels are of the same length in the transverse direction YY;
- this form is interesting and useful so that the box-envelope can be worn at least partially suspended from a finger by passing through the PiP2 plates and that the location 3 remains horizontal.
- the reference triangle (SMi, Ai, A0) which is the geometric shape to define the shutters will not be isosceles but "pseudo isosceles" with sides from the point SMi for the Vi pane:
- quadrants Qi are identical and their shapes are symmetrical and of identical dimensions, to vary the appearance of the box-envelope and if necessary adapt it to functional needs or different aesthetics, this overall symmetry of shapes (flaps, flaps, bellows) does not imply the dimensional identity of the shape of the flaps (which conditions the shape of the bellows and the flap portion on the same quadrant) which does not is not necessary and may vary from one flap to another.
- the axes X1X2, Y1Y2 can cut quadrants Qi all different so that the envelope box will no longer have a symmetrical shape of rotation, but an irregular shape, bent differently and / or with more or less curved flaps and covering more or less.
- the outline of the cut and grooved blank can be modified by an affine transformation which preserves the parallelism of the lines but fundamentally modifies the shape of the box-envelope.
- FIGS. 5-8 show one half of the blank and the envelope box being formed and FIGS. 5A-7B show front and back views. side associated with steps 5-7.
- FIG. 5 shows the first step of forming the blank 100 around the support 150 supposed to be placed on the slot 3.
- the support 150 is only shown in FIG. 5A so as not to hide the slot lines of the slot 3, necessary for understanding the formatting.
- This first step consists in raising the two panels A2A3 and A 4 Ai around the two edges A2A3 and Ai which are slotted and then form a fold still attenuated because the creasing does not continue beyond the ends Ai, A2 of the segment AiA2 forming the edge line or the ends A3, A 4 of the segment A3 A4.
- the bellows S 1, S 2 take a curved shape around the axes AX 1, AX 2 passing through the edge lines and extending them.
- the bearing concerns the entire panel and consists of joining the upper edge of the two plates Pi, P2 associated with the panels.
- the two plates take a dihedral shape represented by the triangle connecting the upper edges SMiSM 4 ; SM2SM3 wafers at the edges Ai, A2, A3, A 4 according to the geometric construction lines.
- the dihedron is stabilized by the lock blocking the two platelets Pi, P2 relative to each other in this form of dihedron and allowing to pass a finger transversely in the two plates and the panels that carry them.
- the blank 100 forms a cylindrical tunnel of mixed section (straight and curved) as shown in FIG. 5A.
- the bending lines LC 1, LC 2 naturally connect the fixed points of each panel, namely here:
- the bending line LCi connects the vertex Ai of the location 3 to the top SMi of the plate Pi
- the bending line LC2 connects the top A2 of the location 3 to the top SM2 of the wafer P2.
- the corners C 1 -C 2 at the end of the folded lines LR 1, LR 2 have not yet reached the edge line A 1A 2.
- FIG. 6A The front view (FIG. 6A) and the side view (FIG. 6B) show this intermediate step corresponding to a pivot angle ⁇ of the flap Ri under the plane of the location 3.
- Figure 7 shows the end of this step of lowering the flap Ri to the vertical position: the folded lines LRi, LR2 joined the edge A1A2 and the vertices Ci, C2 are on this line.
- the next step, not shown is to fold the flap Ri under the slot 3 and fix it, for example with a piece of tape.
- the bending lines LCi, LC2 retain the bending of the flaps Vi, V2 with respect to the faces Fi, F2 thus reinforcing the holding of the convex shape of the envelope and avoiding any local depression.
- the shape of the other half of the blank 100 is the same.
- the two flaps R 1, R 2 can be attached separately or at the same time with a piece of adhesive tape under the location 3.
- FIG. 8 shows the finished envelope box revealing the two faces F1, F2 and the flaps Vi, V2 as well as the plates Pi, P2 serving for example for gripping.
- the contents of the box being generally light, it is possible to hold the box by hanging on a finger past the lock formed by the two plates.
- the integral assembly is produced by means of a cut-off plate P2 and a tongue-and-groove plate PI.
- the two plates have their rectangular outline whose top corresponds to the vertices SM1, SM2, SM3, SM 4 already described.
- the platelets Pi, P2 are in principle symmetrical in shape with cutouts; the orientation used for the description is that of platelets Pi, P2 attached to the panels of the blank 100.
- FIGS. 9, 9A show the wafer P2 having an empty blank 50 forming a rounded passage 51 continuing upwards by a double trapezoid-shaped ramp 52 opening into a transverse lock notch 53.
- the other plate Pi ( Figures 10, 10A) comprises a cutout 40 with a tongue with rounded edges constituting a latch 41 and continuing upwardly by a spacer 42 bordered by two teeth 44 facing upwards and separated from the spacer 42 by notches 43 whose bottom is separated by the small base 42a of the spacer 42 which is an isosceles trapezium whose small base 52a constitutes kills the connection with the latch 41 and the large base 42b is the connection with the body of the plate Pl.
- FIGS. 1 1, 1 1A represent the initial phase of the meeting of the two upper edges of the panels provided platelets Pi, P2.
- the panels are not shown in the various FIGS. 1 to 15A, since for the implementation of the locking by the plates Pi, P2, the panels are situated locally in the plane of the plates Pi, P2 being confused with them and they are cut according to the cutouts 40, 50 to allow locking by the passage of a finger and holding the box-envelope with a finger.
- the wafer Pi is slightly slid with respect to the wafer P2 (movement in the direction (D-) so as to pass the tips of the teeth 44 in front of the ramps 52 and then to raise the teeth 44 in front of the ramps 52 (FIG. 13, 13A) to thus initiate the locking so that the notches 43 overlap the ramps 52 during the upward movement (D +) of the plate PI until the small base 42a is engaged in the During this movement, the notches 43 overlap the ramps 52 thus guiding the lock (41) in front of the plane of the wafer P2 while the spacer 42 remains behind the wafer P2, in the meantime of it and the plate Pi to which it remains attached.
- the relative movement against the platelets Pi, P2 is shown schematically by the offset between the platelets in FIG. 14 which follows the movement represented in FIGS. 13, 13A.
- the latch 41 is pushed through the opening of the blank 50 to arrive finally and schematically in the position of FIG. 15A followed by raising of the latch 41 whose teeth 44 remain plated in front of the plate P2 beyond the ramps 52 and the locking notch 53.
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- Engineering & Computer Science (AREA)
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Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1656429A FR3051446A3 (fr) | 2016-05-20 | 2016-07-05 | Boite enveloppe formee par pliage cintrage d'un flan prepare |
PCT/FR2017/051698 WO2018007716A1 (fr) | 2016-07-05 | 2017-06-26 | Boite enveloppe formee par pliage cintrage d'un flan prepare |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3481734A1 true EP3481734A1 (fr) | 2019-05-15 |
EP3481734B1 EP3481734B1 (fr) | 2020-05-13 |
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ID=59416722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17745395.8A Active EP3481734B1 (fr) | 2016-07-05 | 2017-06-26 | Boite enveloppe formee par pliage cintrage d'un flan prepare |
Country Status (2)
Country | Link |
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EP (1) | EP3481734B1 (fr) |
WO (1) | WO2018007716A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109398862A (zh) * | 2018-11-19 | 2019-03-01 | 珠海格力电器股份有限公司 | 配件包装盒 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5842630A (en) * | 1998-01-09 | 1998-12-01 | Remer; Daniel J. | Structure formed of a single sheet of foldable material for containing three dimensional objects |
-
2017
- 2017-06-26 WO PCT/FR2017/051698 patent/WO2018007716A1/fr unknown
- 2017-06-26 EP EP17745395.8A patent/EP3481734B1/fr active Active
Also Published As
Publication number | Publication date |
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EP3481734B1 (fr) | 2020-05-13 |
WO2018007716A1 (fr) | 2018-01-11 |
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