IMPERMEABLE CARDBOARD BOX RUBBISH CONTAINER

Abstract: A cardboard case-box container (S) eventually associable to a cover, in which the cardboard is preferably impregnated with sealing material to be impermeable for liquid materials and in which for the preparation of the case-box (S) we use a substantially rectangular diecutting cardboard correspondent to the development perimeter of the case-box or greater, with prefold lines (p) to form: a squared bottom (1) and four squared side walls (2, 3, 4, 5), where the respective external quadrangles between them (6), present three prefold lines in bellows-bendings, by means of bending them externally on two opposed side walls (2, 4) of the case-box, which bent bellows-bendings will be laced by means of respective prolongations (8, 8') of said sidewalls (2, 4), characterized in that the end of said prolongations (8') have the dovetail shape to be in turning-up bent under the edge of tilted bendings of said bent bellows-bendings (b), to be set in 180 DEG inside-turning up upright position, between the couple of said bellows-bendings (6, 6', 6'', 6''') and the respective underlying lateral wall (2 on one side and 4 on the other).

Description: Impermeable cardboard box rubbish container This patent has for object an impermeable cardboard box rubbish container with respective not re-openable cover, particularly suitable for hygienic use and hospital purposes to contain rubbish and even liquid materials and after fill be closed by a cardboard cover in order to not allow reopening for example by means of external overlapping (Eg. fish-bone encasing). In order that the entire container can be, with its content, destroyed by incineration with minimization of the pollution effect. Conveniently the cardboard is of impermeable type to prevent . the loss of liquids eventually contained In prior art we know containers of such type made in impermeable cardboard (Eg. Italian Patent Application IT-83404A/89 extended as WO90/14276 in the name of FRIULANA SERVIZI ECOSISTEMI S.R.L., inventor: DELLA PIETRA Silvano) to avoid liquid material lacks and pollution in incineration, respectively having a bottom and four sides as lateral walls, in which the respective external quadrangles to the corners on the diagonals have a prefold line on the same diagonal, destined after realized in bending the box, to be bent externally closely to respective lateral wall and secured by means of turning up toward the external of prolongations of the corresponding lateral walls, acting the turnup-folding since folded under the foldings of the quadrangles, also as handle. A main disadvantage of the above-mentioned solution derives however in that the container assures a liquid material tight not for the entire height of the container for the presence of carvings in the respective bending of the quadrangles, said carvings being necessary for the cog of said turnup-folding. Scope of the present invention is to obviate also the above-mentioned drawbacks. This and other scopes are reached with the present invention according to claimed characteristics solving the exposed problems by means of a cardboard case-box container eventually associable . to a cover, in which the cardboard is preferably impregnated with sealing material to be impermeable for liquid materials and in which for the preparation of the case-box we use ' a substantially rectangular diecutting cardboard correspondent to the development perimeter of the case-box or greater, with prefold lines to form: a squared bottom and four squared side walls, where the respective external quadrangles between them, present three prefold lines in bellows-bendings, by means of bending them externally on two opposed side walls of the case-box, which bent bellows-bendings will be laced by means of respective prolongations of said sidewalls in which the end of said prolongations have the shape of dovetail to be in turning-up bent under the edge of tilted bendings of said bent bellows-bendings, to be set in 180° inside-turningup upright position, between the couple of said bellows-bendings and the respective underlying lateral wall. With this solution it is possible to provide a container in tight cardboard with handles and allowing the cog of a not reopenable cover according to prior art but in which it can contains liquid materials in its entire height. These and other advantages will appear by the specified following description of a preferred solution with the help of the included drawings which particulars of execution are not to be considered limitative but only exemplificative. Figure 1 represents a plan view of the diecutted cardboard for the case-box to be shaped with prearranged the respective prefolding lines for its formation. Figure 2 represents a left side view of the case-box in which . the external edges are rotated adjacent to the handle walls after the turning-up of the bellows quadrangles and before the final turning- up of the ending connection edge inside them. Making reference to the Figures, it is disclosed that with 1 is indicated the bottom and with 2,3,4,5 the respective four sides of the lateral walls being the corner edges indicated with 6, endowed with bending lines (6',6",6'") for a bellows formation destined then to be folded in opposition in adjacency to the respective side walls (2,4) to realize also handling means, being endowed with prolongations (8) which end edges (8'): - are shaped in fish-bone . shape, - are destined to be turned-up under and inside said bellows- bendings, between said bellows-bendings and the underlying respective side wall (respectively 2 and 4). The above is better explained in Figure 2 which discloses the bellows- bendings 6 externally bent in opposition on the handle walls in such a way to allow cogging to realize the case-box by means of respective prolongations 8,8' that in the specific case are not yet internally bent in 180° inside-turningup-bending, this being more evident in complete folded case-box as disclosed in Figure 3. We see in Figure 1 that the respective corners of the quadrangles, included between the bellows-bendings (6',6"'), are cut at 45° (Fig.l). This allows, with the assistance of the intermediate bending between them (6") to obtain a bellows' which adjacent edge (6) when bent, is placed parallel to and to the same level of the upper edge of the case. The lip 7 is turaed-up toward the external to prevent the extraction of the cover since clothed. With this solution the level of contained liquid is - so ' absolutely equal to the height of the case.

Claims: CLAIMS 1 A cardboard case-box container (S) eventually associable to a cover, in which the cardboard is preferably impregnated with sealing material to be impermeable for liquid materials and in which for the preparation of the case-box (S) we use a substantially rectangular diecutting cardboard correspondent to the development perimeter of the case-box or greater, with prefold lines (p) to form: a squared bottom (1) and four squared side walls (2,3,4,5), where the respective external quadrangles between them (6), present three prefold lines in bellows-bendings, by means of bending them externally on two opposed side walls (2,4) of the case-box, which bent bellows-bendings will be laced by means of respective prolongations (.8,8'). of said sidewalls (2,4), characterized in that the end of said prolongations (8') have the dovetail shape to be in tuming-up bent under the edge of tilted bendings of said bent bellows-bendings (b), to be set in 180° inside-turningup upright position, between the couple of said bellows-bendings (6, 6', 6", 6"') and the respective underlying lateral wall (2 on one side and 4 on the other). 2 A cardboard case-box container according to claim 1 , characterized in that said bellows-bendings in said quadrangles (6): - have three intermediate prefoldings (6', 6", 6"'), - have the respective corners cut at 44° between two respective symmetric intermediate prefolds (6',6"'); - being the third prefold in intermediate line a bisector line (6"). 3 A cardboard case-box container according to claim 2, characterized in that said three bellows prefolds (6',6",6"') in said quadrants (6) have the same angular division equal to an angle of 90/4°.

Inventors: DELLA PIETRA SILVANO, DELLA PIETRA, SILVANO
Applicants: DELLA PIETRA SILVANO, DELLA PIETRA, SILVANO
Application year: 1991
Main classification: B65D5
IPC codes: B65D5