EP0691918A1

EP0691918A1 - Protective and blocking container for packaging spectacle lenses or similarly shaped products

Info

Publication number: EP0691918A1
Application number: EP94913147A
Authority: EP
Inventors: Roger Dreyfus; Bertrand Lamare
Original assignee: Essilor International Compagnie Generale dOptique SA; FCP Financiere Carton Papier SA
Current assignee: EssilorLuxottica SA; GPI France SAS Angers
Priority date: 1993-04-08
Filing date: 1994-04-07
Publication date: 1996-01-17
Anticipated expiration: 2014-04-07
Also published as: EP0691918B1; DE69404638D1; WO1994024004A1

Abstract

Protective and blocking container characterized by a sheath-like outer case (13) and a blocking receptacle (14) which includes a bottom panel (15) in which the object to be packaged is placed and two box-forming flanges articulated as a parallelogram that is deformable on two opposite edges of the bottom panel (15) to form, in a raised position, two edges having on their inner lateral panel (18) a cut-out portion (19) whose lateral edges (36) constitute an opening for accommodating and holding in place one part of the object. Application to spectacle glasses and pharmaceutical, medical, cosmetic, decorative, jewellery, photographic, sport and food products.

Description

PROTECTIVE AND SETTING PACKAGE FOR THE PACKAGING OF A GLASSES GLASS OR A PRODUCT

ANALOGUE SHAPE

The present invention relates to a protective and wedging packaging for a spectacle lens or the like, to the blank for making the receptacle for such packaging and to the method of packaging the object in this packaging.

More particularly, the present invention relates to the packaging by unit of a spectacle lens when this packaging is carried out using a packaging in two parts, that is to say comprising an external envelope and, in the latter, a receptacle suitable for protecting and wedging the spectacle lens.

It also relates to the application of this packaging to all other objects or products located in fields different from that of ophthalmic products, and having general shapes identical or analogous, or more generally similar to those of spectacle lenses, for example general shapes in pebble or puck. To date, the receptacle most often used for a spectacle lens is a shell in thermoformed synthetic material having at mid-height a shoulder for the support of the spectacle lens and thus the suspension thereof, and a outer envelope, of cardboard comprising, in addition to a cylindrical side wall of rectangular cross section, two closure flaps suitable for closing it at each of its ends.

Such packaging has given and can still give satisfaction.

However, it has disadvantages, which are as follows. First of all, the receptacle does not lend itself well to the reception of spectacle lenses of different geometric characteristics.

However, because of the differences in models and powers, these spectacle lenses vary widely in peripheral diameter, in radial curvature, and in thickness from one lens to another, but also vary in thickness depending on the location of the periphery on a progressive glass. In practice, with the current packaging, more than twenty different packaging models are necessary to cover the whole range of spectacle lenses to be packaged, at the expense of the manufacturing and management costs of the assembly. In addition, due in particular to the presence of closure flaps on the external envelope, the insertion of the receptacle into this external envelope is difficult to automate.

In practice, it is still done most often to date manually, inducing a low rate and high costs.

Furthermore, the production of the receptacle in synthetic material poses recycling problems in the current state of anti-pollution requirements.

Finally, the unit price of the hulls cannot decrease further because the tools are already amortized.

The present invention relates to a protective packaging and wedging minimizing these drawbacks which applies to the protection and wedging of many products of general shape similar to that of a spectacle lens. Examples include the following products: pharmaceutical and medical products - beauty products - decorative items - medals and decorations - jewelry, watches - computer products - portable measuring instruments - spare parts and accessories - sporting and leisure articles - food products - stationery - advertising objects - containers: pots, boxes and cases, and all their equivalents as well as the field of optical components for photography, cinema, television, visual observation and shots, including lenses, lenses and filters and all their equivalents. To this end, the invention relates to a protective and wedging package made entirely of cardboard suitable for wedging spectacle glasses formed of a sheath in which a receptacle slides to engage, characterized in that the receptacle comprises a quadrangular bottom panel, in particular square, on which the spectacle lens is deposited and, along two opposite edges of this bottom panel, two box edges articulated in deformable parallelogram to the bottom panel, between a retracted position in which they extend flat along the plane of the bottom panel, and an erected position in which they stand perpendicular thereto, the two box rims having in their internal side panel a cutout serving as an opening for the calibration reception of the spectacle lens. In addition to the many advantages specific to cardboard: cost, recyclability, impact resistance, lightness at the same time as sufficient mechanical resistance, this packaging accepts different glasses of different geometric characteristics and the packaging operation can easily be automated.

In addition, its cost, even printed, is minimal and it can advantageously be delivered flat, whether the receptacle or its sheath.

In addition, the receptacle automatically centers around the glass to be protected and simultaneously center the glass as it is set in volume.

In practice, with the protective and wedging packaging according to the invention, five different packaging models are sufficient to cover the whole range of possible spectacle lenses.

In addition, the receptacle that this packaging contains is advantageously available flat, and, like the outer envelope with which it is associated, it can advantageously be made of cardboard or corrugated cardboard if desired by taking advantage of the qualities of lightness, ease folding and rigidity of this type of material.

Finally, no bonding is necessary during the volume setting, so that the packaging according to the invention can be reused for a return in warranty or any other subsequent use.

The present invention also relates to a blank suitable for producing a single piece of such a receptacle.

The aims, characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the figures of the appended schematic drawings in which:

. Figure 1 is a perspective view with local cutaway on the upper face of the protective packaging and wedging according

The invention in a closed state and containing a spectacle lens;

. Figures 2 and 3 are, on a larger scale, cross-sectional views of the protective packaging and wedging, each along lines II-II and III-III of Figure 1 respectively;

. Figure 4 is an overall perspective view of the protective packaging and wedging according the invention, dissociated receptacle and sheath; . Figure 5 is a different scale, a plan view of the flat blank cut specific to the construction of the receptacle that includes the protective packaging and wedging according 1'invention;

. Figure 6 is a plan view of the flat blank after gluing; . FIGS. 7A, 7B, 7C, 7D and 7E are perspective views illustrating successively, from the flat view, various phases of volume setting of the receptacle of the protective packaging and wedging according to the invention up to to its final form; . Figure 8 is a schematic perspective view showing the spectacle lens in the immobilized position in the entry of the wedge opening; . Figure 9 is an enlarged view of one of the edges of

Opening; . FIG. 10 is a schematic front view of the opening showing the position of two glasses, one of minimum thickness, the other of maximum thickness,. FIG. 11 is a schematic view of a lateral edge of the opening intended to visualize the relationship between the thicknesses of glasses and the shape of the line of the curve of said edge,

. FIG. 12 is a schematic perspective view similar to that of FIG. 8 in the case of oblique lateral edges,

. Figure 13 is a schematic perspective view of glass removed in the case of side edges with flaps.

As already indicated, the applications of the invention extend without limitation to commercial objects other than ophthalmic products of the spectacle lens type relating to the following fields: pharmaceutical and medical products - beauty - decorative items - medals and decorations - jewelry, watches - computer products - portable measuring instruments - spare parts and accessories - sporting and leisure articles - food products - stationery - advertising items - containers: pots, boxes and cases, and all their equivalents as well as the field of optical components for photography, cinema, television, visual observation and shooting, in particular objectives, lenses and filters and all their equivalents.

As will be easily understood, it is a matter of keeping an object of general shape equivalent or approaching that of a spectacle lens, but more particularly of generally flat and approximately cylindrical shape with opposite planar or curved faces, set back or projecting but also with opposite faces of any shape, regular or not. The shape of the lateral surface may vary, for example a shape of oblong, polygonal or other section.

For the reasons indicated above, the description below uses as an example a spectacle lens referenced 10. It is understood that the conditioned object can vary in its shape and in its nature. It suffices that it can materially be contained in the packaging, that is to say be surrounded and wedged by the erected cardboard shapes described below.

Thus, the example of the spectacle lens used below applies to all the products likely to be packaged in this packaging.

The unit packaging of this spectacle lens 10, with an upper surface 11, is done using a packaging 12 comprising, in an external envelope 13, a receptacle 14 suitable for its protection and its setting.

The receptacle 14 has a bottom panel 15 quadrangular, preferably square, on which the spectacle lens 10 is deposited, and, along two opposite edges of this bottom panel 15, preferably flush with these, two box edges 16 of quadrangular section, for example rectangular. These box edges are articulated in a deformable parallelogram to the bottom panel between a retracted position (FIG. 7A) in which they extend flat on the plane of the bottom panel and an erected position (FIGS. 1,4,7C and 7D) in which they stand perpendicular to it. These box edges

16 have on their internal side panel 18, flush with the bottom panel 15 according to arrangements described in more detail later, a cutout 19, constituting a wedge opening for the partial insertion of the object to be packaged: spectacle lens Or other.

By way of example, this conformation is shown for example to be well suited for immobilizing a pair of glasses with or without glasses, for example a pair of sunglasses which is thus sufficiently protected for the current needs of the transport, delivery and possibly sale and use. The two box rims 16 are identical and extend parallel to each other, resting their full width on the bottom panel 15.

Each of them successively comprises, separated by parallel fold lines 22, a side panel 23 connected in one piece to the bottom panel 15 by a fold line 24, and a front panel 25. The fold line 24 forming the corresponding edge of the bottom panel 15 is parallel to the previous fold lines 22. The two box edges 16 comprise, in addition to the side panel 18 having the cutout 19, a connecting panel 26 by which each box is secured by gluing to the bottom panel 15.

From one to the other of the fold lines 22 or 24 which delimit them, the side panels 18 and 23 have the same width. This width corresponds to the height of the box edges 16.

In the embodiment shown, the receptacle 14 further comprises closing flaps 27 which, at a height at most equal to that of the box edges 16, are each respectively connected in one piece to the bottom panel 15 along the other two edges thereof, by fold lines 28 which, forming the corresponding edges of this bottom panel 15, are perpendicular to the fold lines 22, 24 of the box edges 16.

In practice, the height of these closing flaps 27 is equal to that of the box edges 16.

In the embodiment shown, the closing flaps 27 are connected to the box rims 16 by corner joints, for example, bellows 30 with median fold line 31 coming, in practice at 45 °, from the corresponding angle of the bottom panel 15, and of the opposite fold direction from that of the fold lines 22, 24 of the box edges 16.

Each of these bellows 30 is connected to the closing flap 27 and to the side panel 23 which it connects by fold lines in the same direction as the fold lines 22, 24 of the box edges 16, namely, for the flap of closure 27, a fold line 32, which, perpendicular to the fold line 28 of this closure flap 27, is in line with the fold line 24 of the side panel 23, and, for the side panel 23, a line folding 33 which, perpendicular to the folding line 24 of this side panel 23, is in line with the folding line 28 of the closure flap 27. In the embodiment shown, and to facilitate folding, the central fold line 31 of the bellows 30 is locally interrupted by a cut 35. In practice, this cut 35 extends to the fold line 32, and it replaces it over part of its length.

The bellows 30 have a general shape in an arc. In the embodiment shown, the lateral edges 36 of the cutout 19 which each boxed rim 16 has on its innermost side panel 18 are generally oblique in relation to the bottom panel 15, converging towards one other as they move away from it.

In practice, these lateral edges 36 have a geometrical outline depending on the application envisaged with a view to keeping the object in place. They are for example each rounded in an arc of a circle, or in an arch segment having both the same center, and, coming from the fold line 22 of the side panel 18 which they affect, by interrupting locally this fold line 22 at one of their ends.

These lateral edges are connected to one another by a straight edge 37 parallel to this fold line 22 at the other of their ends.

Other technical forms of the lateral edges 36 are possible. Some of them are described below. A cutting line 38 parallel to this straight edge 37 truncates at its end the tongue 40 released in the side panel 18 by the cutout 19, and this tongue 40 extends in one piece with the adjacent connecting panel 26, in locally extending it in its middle part.

Likewise, and for reasons which will appear later, the fold lines 24 forming the edges of the bottom panel 15 along which the box edges 16 are each locally interrupted by at least one cutout in loop 41, which, directed towards the inside of the bottom panel 15 from such a line of folding 24, cleaning a tenon 42, in continuity with the side panel 23 near the box edges 16.

In practice, two cutouts in the form of handles 41, and therefore two tenons 42, are thus provided, at a distance from each other, on each of the two opposite opposite edges concerned of the bottom panel 15.

The receptacle 14 comes entirely from a single blank 14 ′, made of cardboard, corrugated cardboard or other sheet material suitably cut, creased and folded.

In FIG. 5, in which the blank 14 ′ is shown developed flat, and in a conventional manner, the cutting lines are represented in solid lines, and the creasing lines, and therefore of folding lines, are represented in dashes when they correspond to a first direction of folding, and dashed when they correspond to the direction of folding opposite to the previous one.

In the blank 14 ', the side panels 23 of the box edges 16 border the bottom panel 15 alternately with the closing flaps 27, and counting from these side panels 23, extend, successively aligned with each other , for each of the box edges 16, the front panel 25, the side panel 18 and the connection panel 26.

After bonding of the connection panels 26, as shown diagrammatically by hatching in FIG. 5, the front panels 25, the side panels 18 and the connection panels 26 are folded over the rest of the blank 14 ′, by folding 180 °. around the fold line 22 intermediate between the side panels 23 and the front panels 25. At the end of this folding, the connecting panels 26 and the tongues 40 which extend them are secured by gluing to the bottom panel 15, and, the box edges 16 being in the retracted position, the blank 14 'thus folded and glued is advantageously deliverable flat (figure 6).

For its volume on its places of use, and therefore for the constitution of the receptacle 14 according to the invention, it is sufficient, after laying on the bottom panel 15, according to the arrow F1 of FIG. 7A, glasses glasses 10 to be conditioned, to exert a pushing action on the two opposite edges of this blank 14 'corresponding to the box edges 16, according to the double arrows F2 in FIG. 7A.

The box edges 16 then pass by themselves into an erected position, standing perpendicular to the bottom panel 15 with their front panel 25 parallel to it, FIG. 7B, and at the same time, they are gripped by the lateral edges 36 of their cutout 19 the spectacle lens 10, while maintaining this applied against the bottom panel 15, thanks to the oblique nature of these lateral edges 36. It suffices, then (FIG. 7B) to raise the closing flaps 27, following the two arrows F3 in FIG. 7C, which implies a simple 90 ° folding of these closing flaps 27 around their fold lines 28 with a joint folding of the bellows 30 around themselves their center fold line 31, until, as shown in FIG. 7D, these closure flaps 27 also stand perpendicular to the bottom panel 15.

In the embodiment shown, the outer casing 13 into which the receptacle 14 thus formed must be slid is reduced to a simple tubular sheath (FIG. 7E). In other words, this external envelope 13 comprises an alignment of main 44 and lateral 45 panels which, alternating with each other, are jointly closed in a loop on themselves by a connecting tab 46, along a rectangular cross section and a contour square corresponding to the cross section and the contour of the receptacle 14.

The constitution of such an outer casing 13 being well known in itself, and not belonging specifically to the present invention, it will not be described in more detail here.

It will suffice to indicate that, as for the receptacle 14, this external envelope 13 can advantageously come entirely from a single blank of cardboard, corrugated cardboard or other sheet material, suitably cut, creased, folded and glued.

Preferably, between the outer casing 13 thus formed and the receptacle 14 are provided stop means.

In the embodiment shown, these stop means comprise, along two opposite edges of the bottom panel 15 of the receptacle 14, at least one tenon 42 which results from a cutting in loop 41 locally interrupting the fold line 24 corresponding.

As also described above, two pins 42 are thus provided on each of the two opposite edges of the bottom panel 15 along which the box edges 16 extend and project from the side of the bottom panel opposite to the box edges 16, when these box edges 16 are themselves in the deployed position.

When, with the spectacle lens 10, the receptacle 14 is slid into the external envelope 13, the pins 42 of the receptacle 14 therefore each come respectively to engage in the notches 48 of the outer casing 13 (FIGS. 4 and 7E), which is sufficient to maintain the receptacle 14 in the outer casing 13.

As described in the context of its particular application to the packaging of lenses or spectacle lenses, the packaging according to the invention has a cutout opening 19 with lateral edges 36 of particular shape for wedging which will be described in more detail below. . To maintain and wedge at best and without damage, for the outer surface of the lenses to be protected, the immobilization results from the point contact of the lateral edges 36 of the cutout opening 19 with said upper outer surface of the object. Maintaining by contact at four points or elementary contact zones, two of which for each opening and a plane support on the bottom of the receptacle are sufficient to achieve satisfactory overall immobilization. The body of the lens or of the spectacle lens is immobilized by contact at the level of each cutout opening 19 in at least two elementary localized contact zones corresponding to the punctual support of each lateral edge 36 of each cutout opening 19 on the upper lateral surface of the glass, just at its upper peripheral edge and this whatever the thickness of the glass which varies according to the power and therefore of the curvature of the lens and according to its angular orientation in the plane of base of the packaging body for so-called progressive lenses.

The shape of the lateral edges 36 of the cutout 19 can vary as a function of the degree of effectiveness of the holding effect to be obtained, and of the amplitude of the variation in thickness to be covered.

The simplest form is an oblique line 49 converging upwards with its symmetrical counterpart 50 as shown in FIG. 12.

The slope of these oblique edges largely depends on the range of thickness differences to be covered. If this range is extended, for a number of glass models to be covered, for example close to five, the slope will be steep. On the other hand, if there are only a few models of neighboring thicknesses to be packed, the slope will be less inclined. Unfortunately, this oblique line tracing of the lateral edges 36 of the opening of the cutout 19 cannot provide effective maintenance over a too wide range of difference in glass thicknesses.

The immobilization can be improved by reinforcing flaps 51 and 52 obtained by not ejecting the material from the opening of the blank 19 during the cutting of the cardboard as shown in FIG. 13.

These flaps 51 and 52 improve the rigidity of the oblique edge of the opening used as a pivoting articulation line 53 and 54 and therefore the quality and the strength of the immobilization. Open, these flaps also provide, by their presence, better mechanical strength of the boxes 16 and additional support of the end engaged in the opening of the cutout 19.

The shutters can be folded down entirely or partially. To do this, the ends of the flaps 51 and 52 are cut at an angle and more or less, for example according to the end portions 55 and 56 hatched in FIG. 13, so as to be able to open them more or less depending on the shape of the object to be packaged and the intended application. It is thus possible to achieve a real additional enveloping and protective effect on the part of the object engaged in the opening of the cutout 19.

Another layout of the lateral edges 36 is suitable for a large number of models of the same diameter. This is the specific curve represented in FIGS. 8 to 10. This curve is formed by a lower part 57 and an upper part 58 which are curvilinear and of inverse curvatures, connected together by an inflection zone 59 more or less extensive. The lower part is convex while the upper part is concave.

As can be seen in explanatory figure 11, this type of layout, in the general shape of an "S" with two reverse curvatures 57 and 58, constitutes the best possible compromise between the oblique line 50 or 51 of the lateral edges 36 and a vertical line 60 formed by the succession of elementary contact zones, each materialized by a cross, corresponding to different thicknesses of glasses of the same diameter. This layout guarantees by its sole form an effective contact for support for all the thicknesses of glasses located inside a useful zone indicated by an arrow at two ends and located between two limits materialized by a dash in Figure 11.

This form of cutting admits a sufficiently wide range of variation in height between a minimum thickness and a maximum thickness of glasses. In practice, in fact, spectacle lenses cannot become too thin for reasons of solidity and resistance in the frame or exceed a certain thickness for aesthetic reasons and the capacity of the frames. This practical limitation determines the useful range of height variation designated by an arrow at two ends.

In addition, one can play on the following parameters: position, inclination and extent of the inflection zone, convexity and concavity of the lower and upper parts, to increase the extent of the effective zone for maintaining the tracing of each edge lateral 36 of the opening of the cutout 19.

When choosing the exact shape of the cutout of the cutout 19, the portion of the lateral edges of the opening corresponding to the useful holding range, that is to say that located on either side of the area of inflection, will be placed at a height such that it will be able to cover the maximum of real thicknesses of glasses.

By their cutout 19, the box edges 16 of the receptacle 14 advantageously make it possible to be satisfied with different geometric characteristics for the spectacle lens 10 and the other objects to be packaged.

Thus, the operations necessary for the installation of a spectacle lens on a blank 14 ', for the volume setting thereof for obtaining a receptacle 14 and for the establishment of this receptacle 14 in the outer casing 13, are easily automated. For example, the placement of the receptacle

14 in the outer envelope 13 is made by insertion into an outer envelope 13 already formed.

As a variant, the external envelope 13 can be formed around the receptacle 14, by enveloping the latter.

Anyway, when the receptacle 14 is thus slid into the outer casing 13, its box edges 16 and its closure flaps 27 are also duly held in place by it.

Claims

1. Protective and wedging packaging for a spectacle lens (10) or product of similar shape comprising an outer casing (13) in a sheath, a receptacle (14) engaging in the sheath casing and having a panel quadrangular bottom (15) on which is laid flat the spectacle lens (10) or product of similar shape, characterized in that it comprises along two opposite edges of the bottom panel (15) two box edges ( 16) of quadrangular cross section, articulated in a deformable parallelogram to the bottom panel (15) between a retracted position, in which they extend flat and an erected position, in which they stand perpendicular thereto, box edges (16) having on their innermost side panel (18), flush with the bottom panel (15), an opening delimited by a cutout (19) immobilization and wedging with lateral edges (36) for 1 ' partial insertion and timing u spectacle lens (10) by two opposite zones, and in that each box edge (16) is hingedly connected at each of its ends by a corner hinge at one end of a transverse closing flap (27) articulated with the bottom panel (15) along a transverse fold line (28), so as to allow dynamic self-centering of the object to be packaged when the receptacle (14) is placed in volume.

2. Packaging according to claim 1, characterized in that the lateral edges (36) of the openings delimited by the cutouts (19) extend in a general direction obliquely converging upwards.

3. Packaging according to claim 1 or 2, characterized in that the cutouts (19) are located in middle position relative to the panel of the box edge (16) in which they exist.

4. Wedging packaging according to claims 2 and 3 characterized in that the lateral edges (36) of the cutout (19) forming the opening for part of the product to be packaged are oblique straight lines (49) and (50) .

5. Wedging packaging according to claims 2 and 3 characterized in that the lateral edges (36) of the cutout (19) forming the inlet and immobilization opening for part of the product to be packaged are broken down into two sections lower (57) and upper (58) curvilinear curvatures connected by an inflection zone (59).

6. Wedging packaging according to claim 5 characterized in that the lower part (57) of each lateral edge of the cutout (19) is convex, the upper part (58) being concave.

7. Packing according to claim

4 characterized in that the lateral edges (36) in an oblique straight line (49) and (50) of the cutout (19) forming the inlet and immobilization opening for part of the product to be packaged form folds pivot joint (53) and (54) for flaps (51) and (52) sOpen inside the corresponding box (16), part of the ends (55) and (56) can be cut.

8. Packaging according to claim 1, characterized in that each of the box edges (16) of the receptacle (14) successively comprises, separated from each other by fold lines (22) parallel, a side panel ( 23) connected in one piece to the bottom panel (15) by a fold line (24) parallel to the previous ones, a front panel (25), the side panel (18) having the cutout (19) and a panel connecting (26) by which it is secured, for example by gluing, to the bottom panel (15).

9. Packaging according to claim 1, characterized in that the closure flaps (27) of the receptacle (14) connected in an articulated manner by corner joints at the ends of the box flanges (16) are by bellows joints ( 30) having a central fold line (31) coming from the corresponding angle of the bottom panel (15).

10. Packaging according to claim 9, characterized in that the middle fold line (31) of the bellows (30) of the receptacle (14) is locally interrupted by a cutout (35).

11. Packaging according to any one of claims 8 to 10, characterized in that the receptacle (14) comes entirely from one and the same blank (14 ') made of cardboard, corrugated cardboard or other suitably cut sheet material, creased and folded.

12. Packaging according to claim 1, characterized in that, between the outer envelope (13) and the receptacle (14), are provided stop means (42,48).

13. Packaging according to claim 12, characterized in that said stop means (42,48) are studs (42) projecting from the bottom panel (15) extending on the side opposite to the box edges ( 16).

14. Packaging according to claim 13, characterized in that the tenons (42) are cutouts in handle (41) which locally interrupt the fold lines (24).

15. Packaging according to claim 14, characterized in that the pins (42) are located in the extension of the side panels of the box edges (16).

16. Packaging according to any one of claims 13 to 15, characterized in that for each of the pins (42) of the stop means (42,48), the outer casing (13) has a complementary notch (48) along its corresponding edge.

17. Blank in cardboard, corrugated cardboard or other sheet material, characterized in that it is suitable for producing in one piece the receptacle (14) of a packaging according to any one of claims 1 to 7 .

18. A method of packaging and wedging an object, spectacle lens or other object of similar shape in a packaging of the type of that claimed above, characterized in that the glass is placed flat on the panel. bottom (15) without any prior orientation of the glass on itself and approximately in the center of the receptacle (14) when the latter is in the folded and flat state, that the transverse closing flaps (27) are raised and that the boxes (16) are simultaneously erected, thus moving the object in a central position in a self-centering and self-squaring movement, movement during which the cutouts (19) engage on the object to be immobilize with wedging support by the lateral edges (36) of the cutout opening (19) on elementary areas of punctual contact of the periphery of the upper lateral surface of the object, then complete immobilization by final approximation of the perimeter structures f bordered by closing flaps and boxes until the creation of a closed perimeter, perimeter structures held in this position by the sheath.

19. A method of packaging a spectacle lens or an ob and of similar shape in a cardboard packaging with self-centering, self-squaring according to claim 18 characterized in that the maintenance is carried out without bonding then a flattening without destroying the packaging after taking the object inside the packaging.