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A toilet device including a box assembled from a flat pre-cut cardboard blank and a urine and feces collection bag includes (i) a box furnishing by way of folding and consolidation, an opening (2) in its panel (1) serving as a seat, a least two double sidewalls produced by a consolidation of angular

A toilet device including a box assembled from a flat pre-cut cardboard blank and a urine and feces collection bag includes (i) a box furnishing by way of folding and consolidation, an opening (2) in its panel (1) serving as a seat, a least two double sidewalls produced by a consolidation of angularly spaced panels (12/10a and 12a/10) and a double wall on the level of the bottom produced by the consolidation of the panels (20, 20a) and (ii) a collection bag impervious to gases and liquids, in particular made of plastic, whose upper peripheral part entirely covers the panel (1) which serves as a seat and whose bottom which contains a gelling agent, dips into the said opening (2), the said bag being fixed during use to the said box by the V slots (70, 71) and half-V slots (70a, 71a).

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1. A foldable toilet having at least one pre-cut flat blank, the toilet comprising: a cardboard box comprising: a horizontal seat panel provided with an opening connecting an internal cavity of said box to the outside;at least two double sidewalls comprised of panels adjusted into vertical position

1. A foldable toilet having at least one pre-cut flat blank, the toilet comprising: a cardboard box comprising: a horizontal seat panel provided with an opening connecting an internal cavity of said box to the outside;at least two double sidewalls comprised of panels adjusted into vertical position and consolidated by a set of extension feet and of homologous slots;a bottom which is a double horizontal wall, the bottom being comprised of two panels consolidated by at least one extension foot on one of them and at least one homologous slot on the other; anda plurality of vertical ribs, each vertical rib being formed along a fold line of the panels forming the sidewalls, two V-shaped slots being provided on the vertical ribs that are opposite one another, an apex of each V-shaped slot being directed downwards and branches of each V-shaped slot extending obliquely in the direction of the horizontal seat panel, each internal panel of the double side walls comprising a half-V slot that is aligned with a corresponding V-shaped slot; anda collection bag impervious to gases and liquids whose upper peripheral part completely covers the seat panel and whose bottom contains a gelling agent and drops through the said opening into the internal cavity of the said box, the said bag being fastened during use to the said box by the said V slots by at least one sliding fastener inserted into a hem running along the entire length of the open top of the said bag. 2. A device according to claim 1, wherein said seat panel has an even number 2n of sides and has as vertical symmetrical axis, n being a whole number equal to, or greater than 2. 3. A device according to claim 2, wherein said seat panel is connected to at least two series of panels, each series of panels comprising n+1 panels: to a first series of panels along one folding rib via panel located between panels N° 1 and N° n+1; andto at least a second series of panels analogous to the first and angularly offset to the latter at an angle of 2π/n, (where n=4, 2π/3 (where n=3) or π (where n=2). 4. A device according to claim 2 wherein the number of double side walls goes from 2 (where n=2) to n (where n is greater than 2) and wherein said double walls are formed by the consolidation of a first panel of one series with the last panel of the series which follows angularly. 5. A device according to claim 1, further comprising a cover having a panel (5) connected by a horizontal folding rib to said seat panel serving as a seat and comprising at least one extension foot destined, on the closure of the said cover, to enter perpendicularly into a corresponding slot provided in said seat panel. 6. A device according to claim 1, wherein said seat panel is rectangular or square and is connected to the said first series comprising three lateral side panels via a fold connecting it to the central panel of the said first series and to the second series opposite angularly offset by an angle π via fold connecting it to the central panel of the said second series, the double side panels being formed by the consolidation of two at a time of the outermost side panels. 7. A device according to claim 1, wherein said single use collection bag which is impervious to gases and liquids is made of plastic or of a composite material comprising an outside of paper or of woven or non-woven fabric and an inside of plastic and contains a gelling agent which swells on contact with water from urine or faeces absorbing the said urine and coating the said faeces. 8. A device according to claim 7, wherein said collection bag also contains a deodorant. 9. A foldable toilet comprising: a cardboard box comprising: an internal cavity;a horizontal seat panel formed at an upper part of the cardboard box and having an opening formed thereon, the opening communicating with the internal cavity;at least two double sidewalls, each double sidewall comprising: an external side panel having an extension foot projecting therefrom and an internal side panel having a homologous slot formed thereon, the side panels of each double sidewall being vertically orientated and connected together by the external side panel overlaying the internal side panel and the extension foot being received within the slot;each internal side panel having an extension foot projecting therefrom connected to a slot formed thereon near the folding line of each external side panel;a bottom which is a double horizontal wall, the bottom being comprised of two bottom panels that are connected together by at least one extension foot projecting from one of the bottom panels being received within an homologous slot formed on or adjacent to the other bottom panel;a plurality of vertical ribs, each vertical rib being formed along a fold line of the side panels, a V-shaped slot being formed on two opposing vertical ribs, each V-shaped slot having an apex directed downwards and branches that extend toward the seat panel at an oblique angle relative to vertical; anda half-V slot formed on each internal panel of the double side walls, each half-V slot being aligning with a corresponding V-shaped slot; anda collection bag made of plastic, the collection bag having an upper peripheral part that completely covers the seat panel and a bottom part containing a gelling agent, the bottom part extending down through the opening of the seat panel and into the internal cavity of the box, the collection bag further comprising an open top formed at the upper peripheral and a hem formed along the open top, a sliding fastener being received within the hem, the collection bag being fastened to the box by the sliding fastener drawing a portion of the collection bag into each of the V-shaped slots.