Flexible bulk storage device

Abstract

The present disclosure relates to a bulk storage device (1) suitable for transporting sharp material, such as for example broken glass, comprising a container (2) made of fabrics comprising a bottom (F), and four side walls (C1, C2, C3, C4), made of fabrics, forming a storage volume (V) of material, the container having an upper opening (OS), for filling at an upper mouth and in which side protective plates (PP), are integral with the fabrics of the side walls, on an inner side of the fabrics and in which one or more bottom protective plates (PP), are integral with the bottom fabric(s) (F) on the inner side of the fabrics, said side and bottom protective walls (PP), are configured to be in direct contact with the material contained in the storage volume while avoiding contact between the material contained in the storage volume and the fabrics of the container.Abstract Figure: Figure 1.

Description

Title of the invention: Flexible storage device for bulk,

[0001] The present disclosure relates to a bulk storage device suitable for the transport of cutting and / or perforating, and / or abrasive material, and comprising a flexible container, based on fabrics.

[0002] The present disclosure finds a particular application for the storage and transport of cutting material, and in particular broken glass. Technical field

[0003] The present disclosure relates to the field of flexible bulk containers (FIBCs) which are large capacity flexible textile containers, typically equipped with closing and gripping devices, intended to receive bulk materials. Prior art

[0004] The present disclosure is more particularly concerned with the collection and transport of sharp materials, such as broken glass.

[0005] Containers conventionally used for the collection of broken glass can be rigid, typically in the form of a box. The disadvantage of such rigid containers is that they require a large storage volume, even when not in use. Similarly, storage solutions comprising skips of varying sizes exist, but take up a lot of space, require costly empty transport, and are often positioned at the locations where the waste is produced. Emptying them requires expensive specific equipment.

[0006] Large, flexible, textile bulk containers can still be used for the collection of broken glass. Compared to rigid containers, FIBCs have the advantage of being able to be stored folded, i.e. taking up less space than a crate.

[0007] However, FIBCs have the following limitations for the transport of sharp material: - Even when reinforced canvas, these FIBCs are often single-use, the FIBC canvases being quickly damaged by sharp contact with broken glass: it is then a packaging solution generating waste, - Even when reinforced fabric is used, and depending on the orientation of the broken glass and the internal pressure, it may happen that a glass pierces the reinforced fabric of the FIBC, which can pose safety problems for the operators present. Summary

[0008] The present disclosure improves the situation.

[0009] A bulk storage device is provided suitable for transporting sharp material, such as for example broken glass, comprising a fabric container comprising, at least in an unfolded state, a bottom, and four side walls, made of fabric, forming a material storage volume, the container having an upper opening, for filling at an upper mouth at the upper end of the side walls, and in which side protection plates are integral with the fabrics of the side walls, on an inner side of the fabrics and in which one or more bottom protection plates are integral with the bottom fabric(s) on the inner side of the fabrics, and wherein said protective walls, side and bottom, are configured to be in direct contact with the material contained in the storage volume while avoiding contact between the material contained in the storage volume and the fabrics of the container.

[0010] The features set out in the following paragraphs may, optionally, be implemented independently of one another or in combination with one another.

[0011] According to one embodiment, the canvas container may be foldable in a folded state, two of the opposite side walls of the container being foldable, each along a median axis extending along the height of the container, each of the protective plates belonging to the two foldable side walls having a median fold line extending along the height of the container, said fold lines allowing the side wall to be folded when said median fold axes belonging to two side walls are brought together, while preventing the side wall from being folded in the other direction by blocking said fold line when the two articulated parts of the protective plate reach coplanar positions.

[0012] According to one embodiment, the bottom of the container comprises several folding closure flaps, each comprising a bottom canvas adjoining by one edge to the canvas of one of the side walls of the container, and a protective bottom plate covering the inner side of the bottom canvas, said closure flaps configured to pass from a closed state ensuring support of the material contained in the storage volume when the flaps are folded against each other, by closing an emptying opening of the container, the flaps held by a locking device, and up to an open state when the locking device is released for which the closure flaps deploy under the action of gravity, by releasing the emptying opening, allowing the emptying of the storage volume.

[0013] According to one embodiment, the device is foldable in a folded state and in which in the folded state, the closing flaps, respectively adjoining the canvases of the side walls are folded down against the respective side walls, said closing flaps folded down and superimposed on the side walls, and in which the protective plates belonging to the two flaps superimposed on the side walls equipped with foldable protective plates, also having fold lines, over the height of the protective plates of the flaps, and so the two superimposed protective plates belonging respectively to the closing flap and to the side wall; are configured to be folded simultaneously when bringing together said median folding axes belonging to the two opposite side walls.

[0014] According to one embodiment, the locking device may comprise several flexible loops configured, in a locking position, to come to bear under the flaps then in the closed state, maintaining the flaps in their position of support for the contained material, the loops crossed by a flexible link connecting the loops together, and in which the locking device is configured to be unlocked by a release of the flexible link so as to cause the release of the loops and the deployment of the closing flaps under the action of gravity, releasing the emptying opening, allowing the emptying of the storage volume.

[0015] According to one embodiment, the side protection plates are secured to the canvases of the side walls of the container by fixing members, such as rivets or bolts, where appropriate, the protection plates of the flaps are secured to the canvases of the bottom, by fixing members, such as rivets or bolts.

[0016] According to one embodiment, the storage device may comprise a tubular skirt which extends the canvases of the side walls, said tubular skirt being configured to be: - in a folded position around the side walls of the container in the unfolded state, freeing the upper opening of the container, in particular so as to allow the loading of the storage volume through the upper opening, - in a closed position closing said upper opening of the container - or even folded inside the storage volume in the folded state of the canvas container.

[0017] According to one embodiment, each protective plate may be an extruded honeycomb plate having two plates, parallel to each other, namely an inner plate and an outer plate and ribs, oriented in the direction of extrusion, each joining the inner surfaces of the two inner and outer plates, distributed in a direction transverse to the direction of extrusion.

[0018] According to one embodiment, the fold lines of the protective plates are formed on the alveolar plates which are oriented in the direction of extrusion along the height of the container, each fold line obtained by a corresponding cut along a vertical line of the inner plate, over its entire height, forming a hinge on the outer plate of the alveolar plate.

[0019] According to one embodiment, each side wall may comprise a rectangular canvas, the rectangular canvases sewn two by two, at the four corners of the container by vertical connecting seams.

[0020] According to one embodiment, the storage device may comprise two handling loops, or even more such as four handling loops, sewn to the canvas container, preferably at the four corners of the container, capable of being grouped in a position above the center of gravity of the container to allow them to be grasped and the container to be lifted.

[0021] According to one embodiment, the canvas(es) of the container, on the one hand, and the protective plates, on the other hand, are made of the same plastic material, such as polypropylene.

[0022] According to a second aspect, the present disclosure further relates to a method for collecting broken glass comprising: - a provision of a bulk storage device according to the present disclosure, - filling the storage volume of the container in the unfolded state, through the upper opening of the container, with broken glass, - transport of the storage device containing broken glass.

[0023] According to an embodiment of the second aspect, the storage device containing broken glass is emptied while it is being lifted, by releasing the locking device, for which the closing flaps deploy under the action of gravity, allowing the broken glass to fall by gravity through the emptying opening.

[0024] According to a third aspect, the present disclosure also relates to a use of the storage device according to the present disclosure for the storage of transport of material containing liquids, such as fermentable material in which a waterproof internal lining is added, in the form of a flexible bag, in the storage volume, covering the protective plates. Brief description of the drawings

[0025] Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the attached drawings, in which: Fig.l

[0026] [Fig.l] is a perspective view of the bulk storage device in the unfolded state of the container which comprises four side walls, each comprising a flexible fabric, the fabrics of the side walls sewn two by two by vertical connecting seams, a skirt of the container extending the fabrics of the side walls on the top being in a rolled-up position around the side walls, so as to free the upper opening of the container, the fabrics of the side walls secured respectively to protective plates, on the internal side of the fabrics, the plates configured to come into direct contact with the material contained in the storage volume of the container. Fig. the

[0027] [Fig. 1a] is a sectional view of the storage device along a horizontal plane, illustrating four internal protective plates, secured respectively to four canvases forming the side walls of the container, the protective plates being honeycomb plates, provided with a fold line, for two of the side walls of the container, the fold line obtained by cutting the internal plate of the extruded plate, forming a hinge on the external plate. Fig. 2

[0028] [Fig.2] shows a view of the storage device according to [Fig.l], after filling the storage volume through the upper opening, in a position of closing the skirt, which is deployed in a position of closing the opening of the container. Fig. 3a

[0029] [Fig.3a] is a view of the storage device, which is inverted, turned downwards relative to its normal position of use, illustrating four closing flaps of the bottom, in positions releasing the emptying opening of the container, [Fig.3a] illustrating by two arrows two first of the closing flaps, opposite, moved towards the closing position, with a view to closing said emptying opening. Fig. 3b

[0030] [Fig.3b] is a consecutive view of [Fig.3a] in which the first two opposite closing flaps are folded against each other, closing said emptying opening, [Fig.3b] illustrating two other opposite closing flaps which are moved towards the closed position. Fig. 5

[0031] [Fig.3c] is a consecutive view of [Fig.3b], illustrating an intermediate position of the bottom closure. Fig. 6

[0032] [Fig.3d] is a consecutive view of [Fig.3c] for which the four closing flaps are in the closed position, the flaps pressed against each other, arrows illustrating the movement of loops of a locking device, covering the bottom. Fig. 3e

[0033] [Fig.3e] is a consecutive view of [Fig.3d], for which the adjoining loops of the different side walls are folded against the closing flaps then in the closed position, the loops linked under tension by a locking link passing through the loops. Fig. 4a

[0034] [Fig.4a] is a view of the storage device suspended from a lifting hook by two handling loops, the storage volume containing a material such as broken glass, the upper opening closed by the skirt, the closing flaps in the closed state ensuring the closing of the emptying opening, and the maintenance of the material in the storage volume, the flaps blocked by a locking device comprising a flexible link. Fig. b

[0035] [Fig.4b] is a consecutive view of [Fig.4a], after release of the flexible link, the closing flaps releasing the emptying opening, causing the contained material to fall. Fig. 5a

[0036] [Fig.5a] is a sectional view of the storage device, when folded, comprising the folding of the closing flaps from the outside, against the side walls of the container. Fig. 5b

[0037] [Fig.5b] is a consecutive view of [Fig.5a] for which the protection plates having fold lines belonging to the opposite side walls, as well as two superimposed flaps are folded when the median fold axes belonging to the two opposite side walls are brought together. Description of the embodiments

[0038] The present disclosure relates to a bulk storage device 1 suitable for transporting cutting and / or perforating, and / or abrasive material, such as for example broken glass, metal waste such as pieces of metal, or rubble. Of course, the bulk storage device is suitable for less aggressive products.

[0039] The storage device 1 comprises a container 2 made of fabrics comprising, at least in an unfolded state ED, a base F, side walls, in particular four side walls C1, C2, C3, C4, made of fabrics, forming a storage volume V of material. The container 2 thus forms a substantially parallelepiped storage volume.

[0040] The container has an upper opening OS, for filling at an upper mouth, at the upper end of the side walls C1, C2, C3, C4.

[0041] According to the present disclosure, side PP protective plates are integral with the side wall fabrics, on an inner side of the fabrics. Preferably, one or more bottom PP protective plates are integral with the bottom fabric(s) F on the inner side of the fabrics.

[0042] The PP protective walls, side and preferably bottom, are configured to be in direct contact with the material contained in the storage volume while avoiding contact between the material contained in the storage volume and the container fabrics, namely the fabrics of the side walls and preferably the fabric(s) of the bottom.

[0043] This avoids contact between the cutting material and the side wall fabrics, and preferably contact between the cutting material and the fabric and the bottom fabrics.

[0044] The side PP protective plates may be secured to the fabrics of the side walls C1, C2, C3, C4 of the container by fixing members OF, such as rivets or bolts. Where appropriate, the protective plates of the flaps are secured to the bottom fabrics, by fixing members OF, such as rivets or bolts, for example four fixing members ensure the hold between the fabric and the protective plate, at the four corners of the side wall, or of the closing flap.

[0045] Generally, each side wall C1, C2, C3, C4 may comprise a rectangular canvas, the rectangular canvases sewn two by two, at the four corners of the container by vertical CL connecting seams. The PP protective plates belonging to the side walls are associated with the different canvases.

[0046] The side and internal PP protective plates respectively cover the surface of the side wall fabrics C1, C2, C3, C4, protecting the fabrics from the attacks of the potentially sharp contents. The PP protective plate(s), covering the bottom fabric(s), protect the fabric(s) from the attacks of the potentially sharp contents.

[0047] According to one embodiment, the storage device 1 may comprise two handling loops BCL, or even more such as four handling loops, sewn to the canvas container, preferably at the four corners of the container. The loops are configured to be grouped in a position above the center of gravity of the container to allow them to be grasped and the container to be lifted. Each loop may comprise a textile strip which is sewn by a first end along a vertical seam of one of the corners, and by a second end along a vertical seam of another adjacent one of the corners.

[0048] According to one embodiment, the canvas container is foldable in a folded state EP, two of the opposite side walls (for example referenced C2, C4) of the container being foldable. Each foldable wall is foldable along a median axis AM extending in height of the container. The other two side walls (for example referenced C1, C3) may be non-foldable. The bottom plates secured to the same sides as the foldable side plates may also be foldable, and in particular as explained below.

[0049] Each of the PP protective plates belonging to the two foldable side walls has a median fold line LP extending along the height of the container.

[0050] The fold lines allow the side wall to be folded when brought together. of said median folding axes AA belonging to two side walls, while preventing the folding of the side wall in the other direction by blocking said fold line when the two articulated parts of the protective plate reach coplanar positions.

[0051] Each PP protective plate may be an extruded honeycomb plate having two plates, parallel to each other, namely an inner plate PI and an outer plate PE and ribs N, oriented in the direction of extrusion, the ribs each joining the inner surfaces of the two inner and outer plates distributed in a direction transverse to the direction of extrusion.

[0052] The fold lines LP of the protective plates can be formed on the alveolar plates which are oriented in the direction of extrusion along the height of the container. Each fold line is obtained by a corresponding cut DC along a vertical line of the inner plate PI, over its entire height, forming a hinge on the outer plate PE of the alveolar plate. The flexible hinge can be reinforced by an adhesive tape stuck on the outer surface PE of the outer plate, along the hinge.

[0053] According to one embodiment, the bottom of the container may comprise an emptying device allowing the contents to be emptied through a lower emptying opening.

[0054] The emptying device may comprise several hinged closing flaps VF, each comprising a bottom fabric TF adjoining by one edge to the fabric of one of the side walls of the container, and a bottom protective plate PP, covering the inner side of the bottom fabric, in a bottom closing position. For example, the four fabrics of the side walls may be extended by their lower edge, respectively by four bottom fabrics. Each bottom fabric TF associated with one of the side walls may be of a dimension less than or equal to the fabric of the side wall. When the closing flaps are folded against the side wall, the size of the closing flap does not exceed the perimeter of the side wall.

[0055] The closing flaps VF are configured to pass from a closed state EF ensuring support of the material contained in the storage volume when the flaps are folded against each other, by closing the emptying opening OV of the container, the closing flaps held by a locking device DV, and up to an open state EO, when the locking device is released (in other words unlocked), for which the closing flaps VF deploy under the action of gravity, by releasing the emptying opening OV, allowing the emptying of the storage volume.

[0056] In the folded state EP, the closing flaps VF, respectively adjoining the canvases of the side walls, can be folded down against the respective side walls, said closing flaps VF being folded down and superimposed on the side walls C1, C2, C3, C4, by pivoting the flaps around the lower edges of the side walls.

[0057] The protective plates PP belonging to the two flaps superimposed on the side walls equipped with foldable protective plates, may also have fold lines LP, over the height of the protective plates PP of the flaps, and so that the two superimposed protective plates PP belonging respectively to the closing flap VF and to the side wall C1; C3; C3; C4 folded against each other are configured to be folded simultaneously when the said median folding axes AM belonging to the two opposite side walls come together.

[0058] According to one embodiment, the locking device DV may comprise several flexible loops PS, configured, in a locking position to come to bear under the closing flaps VF, then in the closed state, maintaining the closing flaps in their position of support for the contained material. In the locking position, the loops are crossed by a flexible link LS linking the loops together, supporting the closing flaps. The flexible link is typically put under tension and two ends of the flexible link can be knotted to ensure locking.

[0059] The locking device DV can be unlocked by releasing the flexible link LS, typically by untying the two ends of the flexible link, and so as to cause the release of the loops PS and cause the deployment of the closing flaps VF under the action of gravity, by releasing the emptying opening OV, allowing the emptying of the storage volume.

[0060] When deployed, the closing flaps, typically four in number, pivot at their connection with the side walls, folding vertically. The four closing flaps in the open position can form a conduit which extends below the emptying opening OV, and as illustrated for information purposes in [Fig.4b]. This conduit, protected by the PP protective plates, provides additional safety by guiding the material contained when it falls, avoiding the risk of projection.

[0061] According to one embodiment, a tubular JP skirt, typically made of canvas, can extend the canvases of the side walls C1, C2, C3, C4, said tubular skirt configured to be: - in a folded position PR around the side walls of the container in the unfolded state releasing the upper opening OS of the container, - in a closed position PF closing said upper opening OS of the container, - or even folded inside the storage volume in the folded state of the canvas container.

[0062] According to one embodiment, the canvas(es) of the container, in particular those forming the side walls and / or the bottom, or even the skirt, on the one hand, and the protective plates, on the other hand, can be made of the same plastic material, such as polypropylene. This facilitates the recycling of the storage device. The fixing members can also be made of the same plastic material.

[0063] Optionally, the storage device (including all or part of it, in particular the canvas(es) and the side and / or bottom plates) may be obtained from recycled plastic.

[0064] According to one embodiment, the present disclosure relates to a method for collecting sharp material such as broken glass comprising: - a provision of a storage device 1 for bulk according to the present disclosure, - a filling of the storage volume of the container in the unfolded state ED, through the upper opening OS of the container, with sharp material, in particular broken glass, - transport of the storage device containing the cutting material.

[0065] According to one embodiment of the method, the storage device containing broken glass is emptied, typically lifted by the gripping loops, by releasing the locking device DV, for which the closing flaps VF deploy under the action of gravity, allowing the broken glass to fall by gravity through the emptying opening OV.

[0066] The space requirement of the storage device, in particular in the folded position or in the unfolded position, can be adapted to pallet formats of standard formats such as 80 x 120 cm; 100 x 120 cm, 114 x 114 cm.

[0067] For the transport and storage of cutting, abrasive, or perforating products, the bottom and side plates are configured to be in direct contact with the material contained in the storage volume while avoiding contact between the material contained in the storage volume and the fabrics of the container.

[0068] For the transport of less aggressive products, likely to contain liquids, such as fermentable products, the storage device can be equipped with a flexible bag forming an internal lining, made of waterproof plastic film, PE, or PP, covering the base plates and the side plates. The flexible bag makes it possible to contain the products by containing leaks through the waterproof bag.

[0069] The present disclosure also relates to the use of the storage device for the storage and transport of material containing liquids, such as fermentable material (for example biomass, pruning products, etc.) in which a waterproof internal lining is added, in the form of a flexible bag in the storage volume, covering the protective plates. List of reference signs

[0070] - 1. Bulk storage device, - 2. Container made of canvas, - Cl, C2, C3, C4. Lateral walls, in particular first, second, third and fourth, - F. Fond, - ED. Unfolded state, - EP. Folded state, - OS. Upper opening (filling) - PP. Protective plates, - AM. Median axis (of folding of the protection plates), - LP. Fold line (protective plate) - PE, PL Respectively outer tray and inner tray (protection plates), - Ribs (protection plates), - OV. Drain opening (drain), - VF. Closing shutters, - EF. Closing state (the closing flaps closing the drain opening), - EO. Opening state (the closing flaps releasing the drain opening), - DV. Locking device, - PS. Passers-by (Locking device), - LS. Flexible link (Locking device), - JP.Jupe, - PR. Rolled up position (of the skirt releasing the upper opening of the container), - PF. Closing position (of the skirt closing the upper opening of the container).

Claims

Claims

1. Storage device (1) for bulk materials suitable for transporting cutting and / or abrasive and / or perforating materials, such as for example broken glass, comprising a container (2) made of fabrics comprising, at least in an unfolded state (ED), a bottom (F), and four side walls (Cl, C2, C3, C4), made of fabrics, forming a storage volume (V) of material, the container having an upper opening (OS), for filling at a mouth upper to the upper end of the side walls (Cl, C2, C3, C4), and in which side protective plates (PP) are integral with the fabrics of the side walls, on an inner side of the fabrics and in which one or more bottom protective plates (PP) are integral with the bottom fabric(s) (F) on the inner side of the fabrics, and in which said side and bottom protective walls (PP),are configured to be in direct contact with the material contained in the storage volume, avoiding contact between the material contained in the storage volume and the container fabrics.

2. Bulk storage device in which the canvas container is foldable in a folded state (EP), two (C2, C4) of the opposite side walls of the container being foldable, each along a median axis (AM) extending along the height of the container, each of the protective plates (PP) belonging to the two foldable side walls has a median fold line (LP) extending along the height of the container, said fold lines allowing the side wall to fold when said median fold axes (AA) belonging to two side walls are brought together, while preventing the side wall from folding in the other direction by blocking said fold line when the two articulated parts of the protective plate reach coplanar positions.

3. Bulk storage device according to claim 1 or 2, wherein the bottom of the container comprises several closing flaps (VF), foldable, each comprising a bottom fabric (TF) adjoining by one edge to the fabric of one of the side walls of the container, and a bottom protective plate (PP), covering the inner side of the bottom fabric, said closing flaps configured to pass from a closed state (EF) ensuring support of the material contained in the storage volume when the flaps are folded against each other, by closing an emptying opening (OV) of the container, the flaps held by a locking device (DV), and until the opening state (EO) when the locking device is released for which the closing flaps (VF) deploy under the action of gravity, releasing the emptying opening (OV), allowing the emptying of the storage volume.

4. Bulk storage device according to claims 2 and 3, foldable in a folded state (ED) and in which in the folded state (EP), the closing flaps (VF), respectively adjoining the canvases of the side walls are folded against the respective side walls, said closing flaps (VF) folded down and superimposed on the side walls (Cl, C2, C3, C4), and in which the protective plates (PP) belonging to the two flaps superimposed on the side walls equipped with foldable protective plates, also having fold lines (LP), on the height of the protective plates (PP) of the flaps, and so that the two superimposed protective plates (PP) belonging respectively to the closing flap (VF) and to the side wall (Cl; C3; C3; C4) are configured to be folded simultaneously when bringing together said median folding axes (AM) belonging to the two opposite side walls.

5. Device according to claim 3 or 4, in which the locking device (DV) comprises several flexible loops (PS), configured, in their locking position to come to bear under the flaps then in the closed state while maintaining the flaps in their position of support for the contained material, the loops crossed by a flexible link (LS) linking the loops together, and in which the locking device (DV) is configured to be unlocked by a release of the flexible link (LS) so as to cause the release of the loops (PS) and the deployment of the closing flaps (VF) under the action of gravity, by releasing the emptying opening (OV), authorizing the emptying of the storage volume.

6. Bulk storage device according to one of claims 1 to 5, in which the side protection plates (PP) are integral with the fabrics of the side walls (Cl, C2, C3, C4) of the container by fixing members (OF), such as rivets or bolts, where appropriate, when the device is according to claims 3 or 4, the protection plates of the flaps are integral with the bottom fabrics, by fixing members (OF), such as rivets or bolts.

7. Bulk storage device according to one of claims 1 to 6, in which a tubular skirt (JP) extends the fabrics of the side walls (Cl, C2, C3, C4) said tubular skirt being configured to be: - in a rolled-up position (PR) around the side walls of the container in the unfolded state releasing the upper opening (OS) of the container, - in a closed position (PF) closing said upper opening (OS) of the container, - or even folded inside the storage volume in the folded state of the fabric container when the storage device is according to claim 2.

8. Bulk storage device according to one of claims 1 to 7, in which each protective plate (PP) is an extruded honeycomb plate having two plates, parallel to each other, namely an inner plate (PI) and an outer plate (PE) and ribs (N), oriented in the direction of extrusion, each joining the inner surfaces of the two inner and outer plates, distributed in a direction transverse to the direction of extrusion.

9. Bulk storage device according to claim 2 or 4 and 8, wherein the fold lines (LP) of the protective plates are formed on the honeycomb plates which are oriented in the direction of extrusion along the height of the container, each fold line obtained by a corresponding cut (DC) along a vertical line of the inner plate (PI), over its entire height, forming a hinge on the outer plate (PE) of the honeycomb plate.

10. Bulk storage device according to one of claims 1 to 9, in which each side wall (Cl, C2, C3, C4) comprises a rectangular canvas, the rectangular canvases sewn two by two, at the four corners of the container by vertical connecting seams (CL).

11. Bulk storage device according to one of claims 1 to 10, comprising two handling loops (BCL) sewn to the canvas container, preferably at the four corners of the container, capable of being grouped in a position above the center of gravity of the container to allow their gripping and lifting of the container.

12. Bulk storage device according to one of claims 1 to 11, in which the container canvas(es), on the one hand, and the protective plates, on the other hand, are made of the same plastic material, such as polypropylene.

13. A method of collecting broken glass comprising: - a supply of a storage device (1) for bulk materials according to one of claims 1 to 12, - a filling of the storage volume of the container in the unfolded state (ED), through the upper opening (OS) of the container, with broken glass - a transport of the storage device containing broken glass.

14. Method for collecting broken glass according to claim 13, implementing a storage device according to one of claims 3 to 5, in which the storage device containing broken glass then lifted is emptied by releasing the locking device (DV), for which the closing flaps (VF) deploy under the action of gravity, allowing the broken glass to fall by gravity through the emptying opening (OV).

15. Use of the storage device according to one of claims 1 to 12 for the storage and transport of material containing liquids, such as fermentable material in which a waterproof internal lining, in the form of a flexible bag, is added in the storage volume, covering the protective plates.

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