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(11) | EP 1 752 391 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Vessel for delivering products wound onto a roll or elongated products, die-cut plate and process for manufacturing such vessel |
| (57) A vessel (1) is disclosed which is adapted to contain a product (3) wound around
a tubular core (5) or an elongated product; the vessel (1) comprises a base (7), two
longer side walls (8a, 8b) parallel to a main rotation axis (X) of the tubular core
(5), two external shorter side walls (9a, 9b) orthogonal to the rotation axis (X)
and a cover (10), at least two internal side bulkheads (17a, 17b) coplanar with such
external shorter side walls (9a, 9b), each one of such two internal side bulkheads
(17a, 17b) being equipped with a housing and rotation seat (19) of one of the two
opposite ends (5a, 5b) of the tubular core (5); a die-cut plate (20) and a process
for manufacturing such vessel (1) from such die-cut plate (20) are also disclosed.
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[0001] The present invention refers to a vessel for delivering products wound onto a roll (such as, for example, plastic or aluminium films, tissues, wires, ropes, gauze, etc.) or elongated products (such as, for example, glass bars with rounded or square section, etc.), to a die-cut plate and to a process for manufacturing such vessel. The following description, for easy of exposure, will refer to the delivery of a film wound onto a roll, but it is obvious that the invention can be applied to all above-mentioned products and other similar ones.
[0002] It is known that, in order to contain and deliver films wound onto a roll, particularly for professional use, such as, for example, films made of aluminium, plastics, PVC or oven paper, typically cardboard vessels are used, obtained from one or more die-cut plates having one or more wings adapted to be opened to allow a film edge to go out of a vessel opening, and equipped with a small saw for cutting the film at the desired length: in order to allow the internal roll rotation and the consequent unwinding of the film wound thereon during the traction of its external edge by a user to withdraw a desired portion thereof, known vessels are typically equipped inside with two circular supports, generally made of plastics, respectively glued onto the internal surface of the opposite shorter side walls of the vessel itself, adapted to support the opposite ends of the tubular roll core and to allow its rotation. Such arrangement however requires that, during the manufacturing process of known vessels as described above, a gluing or constraining step is provided for the supports, complicating and slowing-down their manufacturing process; moreover, it is clear that the adoption of supplementary plastic elements, like the above supports, has a negative impact on vessel manufacturing costs and has a negative environmental impact.
[0003] Another arrangement aimed to avoid using the above-mentioned supports provides for the use of vessels obtained from a die-cut plate equipped with wings to be bent-over to make the supports for the tubular roll core: this arrangement however requires that such vessels are manually manufactured, greatly impairing manufacturing volumes and times.
[0004] Moreover, generally the above vessels are obtained by closing their die-cut plate through fixings, and this obviously cannot guarantee the inaccessibility of the vessel itself, with clear problems regarding storage and integrity of the film inside it.
[0005] Other arrangements provides for the realisation of vessels by gluing many die-cut elements, with obvious negative results on manufacturing costs and complexity.
[0006] Therefore, object of the present invention is providing a vessel for delivering a product wound onto a roll or an elongated product which can be manufactured in a completely automatic way and which guarantees the inaccessibility of the film inside it.
[0007] Another object of the present invention is providing a die-cut plate for manufacturing a delivering vessel which allows realising the product supports in a completely automatic way and without using separate supports or further separate die-cut elements.
[0008] A further object of the present invention is providing a process for manufacturing a delivering vessel from a die-cut plate in a completely automatic way.
[0009] The above and other objects and advantages of the invention, as will appear from the following description, are obtained with a vessel for delivering a product wound onto a roll or an elongated product, with a die-cut plate for realising the delivering vessel, and with a process for manufacturing the delivering vessel as disclosed in the independent claims.
[0010] Preferred embodiments and non-trivial variations of the present invention are the subject matter of the dependent claims.
[0011] The present invention will be better described by some preferred embodiments thereof, provided as a non-limiting example, with reference to the enclosed drawings, in which:
- FIG. 1 shows a perspective, partially-sectioned view of a preferred embodiment of the vessel for delivering a film wound onto a roll according to the present invention;
- FIG. 2 shows a plan view of a preferred embodiment of the die-cut plate according to the present invention for manufacturing the vessel of FIG. 1;
- FIG. 3 shows a perspective view of another embodiment of the die-cut plate according to the present invention with the plate pre-glued in a "case" version; and
- FIG. 4a to 4g show some steps of the process for manufacturing the vessel of FIG. 1 from the die-cut plate of FIG. 2 or 3.
[0012] With reference to FIG. 1, it is possible to note a preferred embodiment of the vessel 1 according to the present invention. In particular, the vessel 1, adapted to contain a film 3 wound around a roll, generally made in a known way as a tubular core 5 made of cardboard, plastics or other adequate material, comprises a base 7, two longer side walls, respectively 8a, 8b substantially parallel to a main rotation axis X of the roll of film 3, two external shorter side walls, respectively 9a, 9b substantially orthogonal to the rotation axis X and a cover 10, such cover being equipped with at least one wing 11 adapted to be opened to allow accessing the roll contained in the vessel 1 for withdrawing the desired portion of film 3 and possibly with at least one slit 13 adapted to allow the passage of an edge of the film 3 itself and its unwinding from the roll due to traction; obviously, the vessel 1 can also comprise at least cutting means, such as for example a small metal or plastic saw, placed in a known way, adapted to cut the film 3 at the desired length.
[0013] According to a variation not shown, it is possible to do without the wind 11 and the slit 13, removing the diecutting lines in Fig. 2 and replacing them with an opening obtained in the upper part of the cover 10.
[0014] The vessel 1 according to the present invention further comprises at least two internal side bulkheads, respectively 17a, 17b coplanar with the external shorter side walls 9a, 9b, each one of them having a housing and rotation seat 19 of one of the two opposite ends, respectively 5a, 5b of the tubular core 5 of the roll of film 3 adapted to allow its rotation and the consequent unwinding of the film 3 itself. In the preferred embodiment, the internal side bulkheads 17a, 17b are realised as "U"-shaped profiles, whose recess realises the housing and rotation seat 19, and are placed in such a way as to define with the respective external shorter side wall 9a, 9b a hollow space, respectively 21a, 21b adapted to contain at least the respective end 5a, 5b of the tubular core 5. Obviously, the housing and rotation seats 19 can be sized and placed in order to contain only the ends 5a, 5b of the tubular core 5 or possibly also the thickness of the film 3 still wound onto the tubular core 5 itself.
[0015] Moreover, each housing and rotation seat 19, in particular the lower end of the "U", can be equipped with a plurality of bendable wings 19a arranged in a substantially semicircular position adapted to improve the tubular core 5 support.
[0016] Obviously, the vessel 1 and its above-cited individual component parts can be made of any suitably stiff material.
[0017] With reference now to FIG. 2 and 3, it is possible to note that the die-cut plate 20 according to the present invention for manufacturing the vessel 1, obviously obtained from a stiff panel made of any substantially-stiff material, such as, for example, cardboard, corrugated board or plastics, comprises a plurality of bending and cutting lines, mentioned below, defining a plurality of bending portions, particularly related to the base 7, to the two longer side walls 8a, 8b, to the two external shorter side walls 9a, 9b, to the cover 10 and to the two internal side bulkheads 17a, 17b of the vessel 1; as clearly appears from FIG. 2 and 3, the die-cut plate 20 comprises the base 7 longitudinally connected through two first longitudinal bending lines 21 to the two longer side walls 8a, 8b; the base 7 is further connected along each one of its two opposite shorter sides to one of the two internal side bulkheads 17a, 17b through two respective first transverse bending lines 23; each one of the two internal side bulkheads 17a, 17b is preferably shaped as a "U" with two side risers 19b enclosing the housing and rotation seat 19 and a plurality of radial cutting lines 19c which define the wings 19a.
[0018] A longitudinal side of one of the two longer side walls 8b is longitudinally connected through a second longitudinal bending line 24 to the cover 10 equipped with suitable cutting and bending lines for defining the wing 11 adapted to be opened and possibly the slit 13 of the vessel 1.
[0019] Each one of the two opposite shorter sides of the cover 10 is further connected through second transverse bending lines 26 to one of the two external shorter side walls 9a, 9b, each one of which being further equipped with a first bendable closing wing 29 along respective fourth transverse bending lines 30.
[0020] Each one of the two opposite shorter sides of at least one of the two longer side walls 8a, 8b can further be connected through sixth transverse bending lines 31 to a supporting wing of the external shorter side walls 9a, 9b. In particular, in the embodiment shown in the Figures, each shorter side of the two longer side walls 8a, 8b is equipped with a respective supporting wing, respectively 9aa, 9ab, 9ba, 9bb. The longer side of the cover 10 opposite to the connection side with a longer side wall 8a, 8b can be connected through a third longitudinal bending line 33 to a second closing wing 35.
[0021] As it is possible to note from the Figures, the die-cut plate 20 is sized in particular to define a length L1 of the base 7 which is shorter than the length L2 of the longer side walls 8a, 8b so that the difference of length L2-L1 is substantially equally divided for realising the two hollow spaces 21a, 21b included between each external shorter side wall 9a, 9b and the respective internal side bulkhead 17a, 17b.
[0022] Moreover, each one of the side risers 19b is sized in order to have a length H1 which is longer that the width H2 of each longer side wall 8a, 8b so that the difference of sizes H1-H2 generates the bending of an end portion with length H1-H2 of each side risers 19b against the cover 10 after having bent the die-cut plate 20 for making the vessel 1.
[0023] As it is possible to note from above, the die-cut plate 20 simply and inexpensively allows manufacturing the vessel 10 according to the present invention by using an individual stiff panel. Obviously, the die-cut plate 20 can further be equipped, in its most adequate positions, with suitable spots or seams of glue in order to consolidate the vessel 1 assembling.
[0024] With reference now in particular to FIG. 3, it is possible to note that a possible variation of the die-cut plate 20 provides that the die-cut plate 20 has the second closing wing 35 connected to the longer side wall 8a, for example by seam or spot gluing 40 or by seaming for realising a die-cut plate 20 with shorter encumbrance and already partially assembled for manufacturing the vessel 1.
[0025] The present invention further refers to a process for manufacturing the vessel 1 from a die-cut plate 20. In particular, with reference to FIG. 4a to 4g, it is possible to note that the process according to the present invention comprises the steps of:
- bending the two longer side walls 8a, 8b substantially by 90° with respect to the base 7 along the first longitudinal bending lines 21 and inserting the roll of product 3 or the elongated productin the space included between such two longer side walls 8a, 8b and the base 7 (FIG. 4a);
- applying a bonding agent 40 on the second closing wing 35, bending the cover 10 substantially by 90° with respect to the longer side wall 8b to which it is connected along the second longitudinal bending line 24, bending the second closing wing 35 substantially by 90° with respect to the cover 10 along the third longitudinal bending line 33 in order to glue it to the longer side wall 8a and applying a bonding agent 40 on the end portion of the side risers 19b (FIG. 4b);
- bending the internal side bulkheads 17a, 17b substantially by 90° with respect to the base 7 along the respective first transverse bending lines 23 (FIG. 4c): in such step, the end portions of the side risers 19b come to be glued onto the cover 10 and the ends 5a, 5b of the tubular core 5 come to be inserted into the respective housing and rotation seat 19;
- bending the supporting wings 9aa, 9ab, 9ba, 9bb substantially by 90° with respect to the respective longer side wall 8a, 8b along the sixth transverse bending lines 31 for realising the hollow spaces 21a, 21b (FIG. 4d); and
- applying a bonding agent 40 onto the first closing wings 29 and possibly onto the external shorter side walls 9a, 9b (FIG. 4e), bending the two external shorter side walls 9a, 9b substantially by 90° with respect to the cover 10 along the second transverse bending lines 26 (FIG. 4f), bending the first closing wings 29 substantially by 90° with respect to the respective external side walls 9a, 9b along the fourth transverse bending lines 30 and gluing such first closing wings 29 onto the base 7 (FIG. 4g).
1. Vessel (1) adapted to contain a product (3), in particular a film, wound around a
tubular core (5) or an elongated product, said vessel (1) comprising a base (7), two
longer side walls (8a, 8b) parallel to a main rotation axis (X) of said tubular core
(5), two external shorter side walls (9a, 9b) orthogonal to said rotation axis (X)
and a cover (10), characterised in that it comprises at least two internal side bulkheads (17a, 17b) coplanar with said external
shorter side walls (9a, 9b), each one of said two internal side bulkheads (17a, 17b)
being equipped with a housing and rotation seat (19) of one of the two opposite ends
(5a, 5b) of said tubular core (5).
2. Vessel (1) according to claim 1, characterised in that said internal side bulkhead (17a, 17b) is shaped as a "U" whose recess realises said
housing and rotation seat (19).
3. Vessel (1) according to claim 1, characterised in that said internal side bulkheads (17a, 17b) define with a respective external shorter
side wall (9a, 9b) a hollow space (21a, 21b) adapted to contain at least said end
(5a, 5b) of said tubular core (5).
4. Vessel (1) according to claim 1, characterised in that said housing and rotation seat (19) is equipped with a plurality of bendable wings
(19a).
5. Vessel (1) according to claim 1, characterised in that said cover (10) is equipped with at least one wing (11) adapted to be opened.
6. Vessel (1) according to claim 1 or 5, characterised in that said cover (10) is equipped with at least one slit (13) for passing an edge of said
product (3).
7. Vessel (1) according to claim 1, characterised in that it comprises cutting means for said product (3).
8. Die-cut plate (20) for manufacturing a vessel (1) according to any one of the previous
claims, characterised in that it comprises said base (7) longitudinally connected through two first longitudinal
bending lines (21) to said due longer side walls (8a, 8b), said base (7) being connected
along each one of its two opposite shorter sides to one of said two internal side
bulkheads (17a, 17b) through two respective first transverse bending lines (23), a
longitudinal side of one of said two longer side walls (8b) being longitudinally connected
through a second longitudinal bending line (24) to said cover (10), each one of the
two opposite shorter sides of said cover (10) being connected through second transverse
bending lines (26) to one of said two external shorter side walls (9a, 9b), each one
of said external shorter side walls (9a, 9b) being equipped with a first closing wing
(29) which is bendable along respective fourth transverse bending lines (30) and a
longer side of said cover (10) being connected through a third longitudinal bending
line (33) to a second closing wing (35).
9. Die-cut plate (20) according to claim 8, characterised in that each one of said two internal side bulkheads (17a, 17b) is shaped as a "U" having
two side risers (19b) enclosing said housing and rotation seat (19).
10. Die-cut plate (20) according to claim 8 or 9, characterised in that said housing and rotation seat (19) is equipped with a plurality of radial cutting
lines (19c) defining said bendable wings (19a).
11. Die-cut plate (20) according to any one of the previous claims, characterised in that each one of the two opposite shorter sides of at least one of said due longer side
walls (8a, 8b) is connected through sixth transverse bending lines (31) to a supporting
wing of said external shorter side walls (9a, 9b).
12. Die-cut plate (20) according to claim 11,
characterised in that the shorter side of said two longer side walls (8a, 8b) is equipped with one of said supporting wings (9aa, 9ab, 9ba, 9bb).
characterised in that the shorter side of said two longer side walls (8a, 8b) is equipped with one of said supporting wings (9aa, 9ab, 9ba, 9bb).
13. Die-cut plate (20) according to any one of the previous claims, characterised in that said base (7) has a length L1 shorter than a length L2 of said longer side walls (8a, 8b).
14. Die-cut plate (20) according to claim 9, characterised in that said side risers (19b) have a length H1 longer than a width H2 of each one of said longer side walls (8a, 8b).
15. Process for manufacturing the vessel (1) according to any one of claims 1 to 7 from
a die-cut plate (20) according to any one of claims 8 to 14, characterised in that it comprises the steps of:
- bending said two longer side walls (8a, 8b) by 90° with respect to said base (7) along said first longitudinal bending lines (21);
- inserting said roll of product (3) or said elongated product in a space included between said due longer side walls (8a, 8b) and said base (7);
- applying a bonding agent onto said second closing wing (35);
- bending said cover (10) by 90° with respect to said longer side wall (8b);
- bending said second closing wing (35) by 90° with respect to said cover (10) along said third longitudinal bending line (33) for gluing it onto said longer side wall (8a);
- applying a bonding agent onto an end portion of said side risers (19b);
- bending said internal side bulkheads (17a, 17b) by 90° with respect to said base (7) along said respective first transverse bending lines (23);
- bending said supporting wings (9aa, 9ab, 9ba, 9bb) by 90° with respect to said respective longer side wall (8a, 8b) along said sixth transverse bending lines (31) for realising said hollow spaces (21a, 21b);
- applying a bonding agent onto said first closing wings (29);
- bending said due external shorter side walls (9a, 9b) by 90° with respect to said cover (10) along said second transverse bending lines (26);
- bending said first closing wings (29) by 90° with respect to said respective external shorter side walls (9a, 9b) along said fourth transverse bending lines (30); and
- gluing said first closing wings (29) onto said base (7).
16. Process according to claim 15, characterised in that it comprises the step of applying said cutting means onto said vessel (1).