MX2008006045A - Insulated cup - Google Patents

Abstract

Cup (1) with an internal wall (2) and an external sleeve (5), the sleeve being formed from a blank (10) of corrugated material comprising a corrugated layer (6) and a Substrate layer (7) and being arranged such that the Substrate layer (7) faces towards the internal wall of the cup. A first end (12) of the blank (10) is overlapped at least partially by a second end (14) of the blank in an overlapping area (19). Further, the sleeve (5) is adhesively attached to the internal wall of the cup (1) at least by a first area (15) of adhesive being provided on an inner side of the sleeve on the first end of the blank and by a second area (17) of adhesive being provided on an inner side of the sleeve on the second end of the blank. The second area (17) of adhesive is provided at a distance from the overlapping edge (13) of the blank, thereby attaching each end of the blank (10) separately to the internal wall of the cup (1).

Description

ISOLATED VESSEL BACKGROUND OF THE INVENTION The present invention relates to a vessel according to the preamble of claim 1. Such a vessel is known, for example, from DE 100 54 727 A1. The main purpose of these vessels is to store cold drinks or hot The corrugated material of the external liner provides thermal insulation of the vessel. By means of this thermal insulation, the liquid in the glass can maintain its temperature for a longer time and the consumer can more easily handle the glass, since the outer side of the glass does not get too hot, nor does it cool too much. The cup of DE 100 54 727 A1 is manufactured by providing adhesive on two opposite edges of the corrugated material preform. After joining the first edge of the preform to the inner wall of the vessel, the preform is stretched around the inner wall, until the second edge overlaps the first edge and adhesively attaches to the first edge. Preferably, this conventional vessel is manufactured in such a way that the flat substrate layer of the liner faces outwards, thereby facilitating printing on the liner. Another container is known from US 5,772,111. However, this container is quite different from the glass of the DE 100 54 727 A1 since it is devoid of an internal wall. Rather, the container is formed simply by closing a preform of corrugated material into a conical shape and providing a lower part of container. This container is formed in such a way that the corrugated layer is oriented towards the outside. However, compared to the vessel of DE 100 54 727 Al, the container of US 5,772,111 is less stable and offers a lower degree of thermal insulation due to the reduced number of layers. SUMMARY OF THE INVENTION The object of the present invention is to improve the known vessel with respect to its stability, its aesthetic appearance and a facilitated form of manufacture. This object is solved by a vessel with the features of claim 1. Advantageous embodiments of the invention are referred to by the dependent claims. According to the invention, the second area of adhesive, i.e., the area of adhesive on the overlay end of the preform for the liner, is provided at a distance from the second or preferably overlapping the edge of the preform. This is in clear contrast to the vessel of DE 100 54 727 A1, according to which this second area of adhesive is provided exactly on the overlay edge of the preform in order to directly attach this overlay edge to the edge underlying the preform and close the lining by this. On the other hand, the present invention teaches to locate the second adhesive area at a distance from the overlay edge, thereby allowing to directly attach the overlay edge of the preform to the inner wall of the beaker. In other words, instead of closing the liner by an adhesive bond, the two ends of the preform are joined separately with the inner wall. This offers several advantages. The stability of the vessel is improved by attaching each end of the preform separately to the inner wall. In the event that a bond of adhesive becomes weak, the liner will still remain stably fixed to the inner wall of the vessel. Furthermore, the width of the overlap can be significantly reduced, because this overlap area is no longer needed for a mutual union of the two ends of the preform. By reducing the overlap, for example to a value of less than 1 mm or only a few millimeters, the lining material is saved, thereby also reducing manufacturing costs. In addition, the aesthetic appearance of the vessel is improved, since the removal of adhesive from the overlay prevents unwanted leakage of adhesive from overlaying to the outside of the vessel. furtherBy being able to reduce the width of the overlap and by being able to avoid an additional layer of adhesive in the overlap, the thickness of the vessel in the overlap can be reduced, which in turn facilitates the stacking of the vessels without clogging . Thus, it is improved to dis-insert the vessels. This facilitates vessel management and reduces storage costs. In a preferred embodiment, the distance of the second adhesive area from the overlay edge is at least as large as the width of the overlay area. This ensures to maintain the adhesive free overlap, thereby restricting the thickness of the wall of the overlay and also avoiding leakage of adhesive. Depending on the cut of the corrugated material preform, the overlap can have a constant width, but the width does not necessarily have to be constant. In particular, this width of the overlap area can have a value between 0 and 4 mm, preferably between 0.5 and 2.5 mm. Depending on the size of the glass, this overlap can, of course, also be wider. For the distance of the second adhesive area from the overlay edge, a value of 0.5 mm to 8 mm and more particularly a value of 0.5 mm to 5 mm is preferred. In particular, the distance should be selected sufficiently large to ensure that adhesive will not leak through the overlap area towards the outside of the vessel. In an advantageous embodiment of the invention, the overlap area is completely free of adhesive between the two overlap ends of the preform. In such an embodiment, the risk of adhesive leakage is further reduced. It may also be contemplated to provide the other, first adhesive area at a distance from the corresponding edge of the preform. When this distance from the first adhesive area is appropriately selected from the overlap edge, for example at least as large as the width of the overlap area, the presence of adhesive between the inner wall of the beaker and the lining below the surface of the bead can be avoided. the overlap This will help to further reduce the resulting thickness of the wall in the overlap, thereby facilitating stacking. According to one embodiment of the present invention, the corrugated layer of the lining material has wave peaks separated from the substrate layer, these wave peaks extending in straight lines or in a wave-like pattern or in a zig-pattern. zag. The volume between the substrate layer and the wave peaks has the greatest influence on the thermal insulation of the vessel. If desired, this volume can also be filled with a certain material, for example foam, in order to further improve the thermal insulation properties. By having adjacent peak waves of the corrugated material disposed at a constant distance, the manufacturing costs of the vessel can be further reduced since the preform for the liner can be cut from any portion of the corrugated material without worrying about the exact location of the cut. The width of the overlay area of the liner is preferably selected to be less than three times the average distance between the adjacent wave peaks of the corrugated material, even more preferred, less than two times the average distance between adjacent wave peaks. Such a comparatively short overlap helps to save material, thereby reducing manufacturing costs and preventing the outer overlap edge from detaching from the vessel. This first area of adhesive and / or the second areas of adhesive advantageously comprise at least one strip of adhesive, in order to form a strong bond between the corresponding end of the preform and the inner wall of the vessel. The adhesive strip can, for example, be arranged parallel to the corresponding edge of the preform. This can ensure that no portion of the edge can detach more from the inner wall than other portions, If that's the case. In addition or alternatively to the adhesive strip, the first adhesive area and / or the second adhesive area may comprise at least one spot or spot of adhesive. Without significantly affecting the stability of the vessel, this can reduce the amount of adhesive used, thereby further reducing manufacturing costs and helping to prevent adhesive leakage through overlap. In a preferred embodiment, several such spots of adhesive are arranged in a line parallel to the corresponding edge of the preform, having similar effects with respect to vessel stability as a strip of adhesive, but with a reduced amount of adhesive. In addition to the first and second areas of adhesive, at least one additional area of adhesive may also be provided between the first and second areas anywhere in the liner. By joining the liner to the inner wall in a third or additional position, the stability of the vessel and liner installation can be further improved. Advantageous materials for the lining are plastic or cardboard material. Of course, other suitable materials can also be used. A significant advantage can be achieved by providing the inner wall of the vessel with dis-insertion means. Such de-insertion means prevent the vessels from becoming clogged when several identical vessels are stacked one inside the other. This makes it easier to separate the stacked cups. For example, the de-insertion means may be formed as at least one projection projecting from the inner wall into the interior of the vessel. When stacked, the upper beaker can be supported with its lower wall on the de-insertion projection of the lower beaker, which prevents the beakers from being stacked too tightly. Such a de-insertion projection can, in turn, comprise a circumferential projection and / or at least a sectional projection, for example a step or a depression. When such a projection is provided only on the lower wall of the vessel, the external appearance of the vessel is not adversely affected. DESCRPTION OF THE DRAWINGS Some embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. In particular, Figure 1 shows a perspective view of a preferred embodiment of a vessel according to the present invention, Figure 2 shows the liner preform used for the vessel in Figure 1, Figure 3 shows a horizontal section of the vessel. overlapping area of the vessel shown in Figure 1, Figure 4 shows a perspective view of a second embodiment, Figure 5 shows a front view of a third embodiment, and Figure 6 shows a perspective view of a fourth embodiment of a vessel according to the present invention. DESCRIPTION OF THE INVENTION The corresponding characteristics are referred to by the same reference numerals throughout all the drawings. Figure 1 shows a preferred embodiment of a vessel 1 according to the present invention. The vessel comprises an internal wall 2, which has a frustro-conical shape, the lower end being closed by the lower part 3 of the vessel. The opposite upper end of the cup is provided with a broad edge, which may be formed for example as a rolled upper end of the inner wall 2. On the outside, the cup 1 is provided with an outer liner 5, which extends over the total height of the inner wall 2, ie from the bottom part 3 of the vessel to the upper edge 4. This liner 5 is formed of a preform of corrugated material, in particular cardboard material, comprising a corrugated layer 6 and a substrate layer 7, c.f. Figure 3. As shown in Figures 1 and 3, the liner 5 is arranged in such a way that the substrate layer 7 faces the inner wall 2 of the vessel 1, while the corrugated layer 6 is oriented towards the outside of the vessel 1. This corrugated layer 6 comprises wave peaks 8, in which the corrugated layer 6 is separated from the substrate layer 7. Each wave peak 8 extends in a wave-like pattern at a slightly inclined angle from the bottom 3 of the vessel to the edge 4. Each pair of adjacent wave peaks 8 are arranged at a constant distance d from each other. Between the peaks of wave 8, there is a depression 9, in which the corrugated layer 6 and the substrate layer 7 are joined together. The liner 5 of the vessel 1 is formed from an initially flat preform 10 of corrugated material as shown in Figure 2. This preform 10 is formed in such a way that, when closed, it forms a frustro-conical liner 5, the conicity of which corresponds to the conicity of the inner wall 2. In this form, the preform 10 can be cut from a larger area of corrugated material. As shown in Figure 2, the preform 10 of corrugated material can be formed as a strip of slightly curved material, having a first edge 11 on a first end 12 of the strip and a second edge 13 on a second opposite end 14 of strip. A first area 15 of adhesive is provided on the inner side of the preform 10 parallel to the first edge 11, but separated by a distance DI of the first edge 11, i.e. in the substrate layer 7. This first area 15 of adhesive is shown in single-line scratch in Figure 2. In the first area 15 of adhesive, adhesive is provided in the form of several spots or spots 16, which are separated at regular intervals on the first area 15 of adhesive. In particular, these adhesive spots 16 are arranged in a line which extends substantially parallel to the first edge 11 of the preform 10. A second area is provided in the preform 10. 17 of adhesive in corresponding relation to the second opposite edge 13 of the preform 10, but separated from this second edge 13 by a distance D2. Similar to the first area 15, this second area 17 of adhesive also comprises a number of separate spots 16 of adhesive, which are arranged in a line extending substantially parallel to the second edge 13 of the preform 10. Instead of providing a number of separate points 16 of adhesive or in addition to these points 16, the adhesive may also be provided in the form of a strip on the respective area 15, 17 of adhesive or in other suitable arrangements. In addition, the adhesive can also optionally be provided on additional areas 18 of adhesive between the first area 15 and the second area 17. Preferably, the adhesive in the first and second areas 15, 17 is hot melt glue, which allows a fast installation, while the adhesive in the additional area (s) 18 is cold glue, which achieves a stronger adhesion. If the speed of the installation is not a problem, cold glue can also be used as the adhesive on the first and / or second areas. In order to manufacture the vessel 1, the preform 10 for the liner is initially formed separately from the rest of the vessel 1"unlined". In particular, the preform 10 can be cut from a larger sheet of corrugated material. After providing adhesive on the preform 10 in the first area 15, the second area 17 and-optionally-also on the additional area (s) 18, the preform 10 is formed around the unlined 1"cup. " In order to do this, the first end 12 of the preform 10 is pressed against the cup 1 and is attached to the outside of the inner wall 2 by means of the adhesive 16 in the first area 15 of adhesive. Consecutively, the preform 10 is wrapped or stretched around the inner wall 2 and is joined to the inner wall 2 by the adhesive in the areas 18 and eventually by the adhesive 16 in the second area 17 of adhesive. As an alternative to providing adhesive in all areas of the preform 10 simultaneously, the adhesive can also be applied sequentially during the formulation of the preform 10 around the inner wall 2. In another alternative method, the preform makes contact with the preform first. unlined cup at its center, before the two ends 12, 14 of the preform are wrapped around the cup symmetrically and each end is attached separately with the inner wall 2. A clamp can be used to press the two ends 12, 14 to each other and on the vessel 1. Eventually, when the preform 10 is formed around the entire inner wall 2, in order to form a liner 5 covering the inner wall 2, the second end 14 of the preform 10 is superimposed on the first end 12. In particular, overlap 19 has a width, as shown in Figures 2 and 3. Although preferably this amplitude W is not greater than the distance d between the two wave peaks 8. adjacent, can also be wider, depending on the value of the distance d. Although the distance DI that separates the first edge 11 from the first adhesive area 15 can be zero, preferably it is not zero, especially in the absence of an overlap or when = 0, even more preferably at least as large as the width of the overlaying. Although it is still close enough to the first edge 11 of the preform 10 in order to avoid a separation of the preform 10 and the inner wall 2, the ratio of DI that is at least as large as W allows the overlap area to be adhesive-free between the first end 12 of the preform 10 and the inner wall 2. In this way the thickness of the wall in the overlap can be reduced, while still offering sufficient stability to the installation. Also as shown in Figures 2 and 3, the distance D2 between the second edge 13 and the second adhesive area 17 is at least as large as the width of the overlap, preferably only slightly larger than the width if it is not zero. The result of this arrangement can be seen in Figure 3: after the connection between the second end 14 of the preform 10 with the inner wall 2 in the second area 17 of adhesive, the second end 14 of the liner 5 opens outwards , in order to be able to overlap the first end 12 of the preform 10. The overlay area 19 is shown in a simple scratch in Figure 2. It has a width W of between 0 and 4 mm, preferably between 0.5 and 2.5 mm . Such a small width with the advantages described above of saving material and improving the aesthetic appearance of the cup 1 is made possible by the present invention by arranging the second adhesive area 17 at a non-zero distance D2, from the overlay edge 13 of the preform 10. Instead of joining the two ends 12, 14 of the preform 10 to each other and then to the inner wall 2, as is done in the prior art, the present invention teaches to join each end 12, 14 of the preform 10 separately with the inner wall 2. Although this provides excellent stability to the installation, the overlay area 19 can be made devoid of adhesive between the first end 12 and the second end 14 of the preform 10. In turn, the width W of the overlay area 19 can be reduced to such a small value. However, by attaching both ends 12, 14 of the preform 10 separately to the inner wall 2, a separation of each end 12, 14 is still more securely achieved than in the prior art. As a further feature, which is also shown in Figure 1, the vessel 1 of the present invention can be provided with de-insertion means 20. In the embodiment shown in Figure 1, the de-insertion means 20 is formed as a step or projection projecting from the inner wall 2 towards the interior of the vessel 1. Depending on the conicity of the vessel 1, the projection 20 is arranged at such a height from the lower part 3 that -when the vessels 1 are stacked- a The upper vessel 1 can rest on the de-insertion projection 20 of a lower vessel 1 whose lower part 3 has been previously stacked in the lower vessel 1 too tightly. The disinsertion projection 20 can be formed as a circumferential projection extending all around the circumference of the vessel 1 or as one or more sectional projections spaced at the same height on the lower part 3 of the vessel 1. Figure 4 shows a view in perspective of a second embodiment of a vessel according to the present invention. In contrast to the first embodiment, the distance d between the adjacent wave peaks 8 is smaller. A third embodiment of the present invention is shown in Figure 5. The liner 5 of the vessel 1 shown in Figure 5 has a reduced height, ie, its height is smaller than the distance between the bottom part 3 of the vessel and the edge 4. Another embodiment of a vessel 1 is shown in Figure 6. This embodiment differs from previous embodiments in that the wave peaks 8 in the corrugated material of the liner 5 extend in straight lines instead of extending in a pattern similar to wave. Of course, the liner 5 of this embodiment can also be made smaller, ie, extending over less than the total height of the vessel 1. Starting from the embodiment shown in the accompanying drawings and described with respect thereto, the vessel 1 of the present invention can vary in many ways.

For example, wave peaks of corrugated material may extend in straight lines, in a zig-zag pattern or with varying distances between adjacent wave peaks 8. The space between the substrate layer and the corrugated layer 6 does not have to be empty but can be filled with a suitable material, to improve the thermal insulation properties, such as foam. Furthermore, the inner wall 2 of the vessel 1 does not have to be formed solely from a single layer, but can be formed in a double-walled form. A less expensive version of the vessel 1 can be formed without the de-inserting means 20 and without additional areas 18 of adhesive. Additional variants are also possible.

Claims (22)

1. CLAIMS 1. A vessel with an inner wall and an outer liner, the liner being formed from a preform of corrugated material comprising a corrugated layer and a substrate layer and being arranged in such a way that the substrate layer is oriented towards the inner wall of the vessel, wherein in particular a first end of the preform is at least partially overlapped by a second end of the preform in an overlapping area and wherein the liner is adhesively bonded to the inner wall at least by a first area of adhesive that is provided on an inner side of the liner on the first end of the preform and by a second area of adhesive that is provided on an inner side of the liner at the second end of the preform, characterized in that the second area of adhesive is provided at a distance D2 from an edge at the second end of the preform ..
2. 2. The vessel according to claim 1, characterized in that the distance D2 of the second adhesive area from the overlap edge is at least as large as the width of the overlap area.
3. The vessel according to any of claims 1 or 2, characterized in that the width of the overlap area is between 0 and 4 mm.
4. The vessel according to any of the preceding claims, characterized in that the width of the overlap area is between 0.5 and 2.5 mm.
5. The vessel according to any of the preceding claims, characterized in that the distance D2 of the second adhesive area from the overlap edge is between 0.5 mm and 8 mm, preferably between 0.5 mm and 5 mm.
6. The vessel according to any of the preceding claims, characterized by the overlapping area that is free of adhesive between the two overlap ends of the preform.
7. The vessel according to any of the preceding claims, characterized by the first adhesive area that is provided at a distance DI from the corresponding edge of the preform.
8. The vessel according to claim 7, characterized in that the distance DI of the first adhesive area from the overlapped edge is at least as large as the width of the overlap area.
9. The vessel according to any of the preceding claims, characterized in that the corrugated layer has wave peaks separated from the substrate layer, these wave peaks extending in straight lines or in a wave-like pattern or in a wave pattern. zig Zag.
10. The vessel according to claim 9 characterized in that the distance between the adjacent wave peaks is constant.
11. The vessel according to claim 9 or 10, characterized in that the width of the overlap area is less than three times the average distance between the adjacent wave peaks, preferably less than twice the average distance between the wave peaks adjacent.
12. The vessel according to any of the preceding claims, characterized in that the first adhesive area and / or the second adhesive area comprise at least one strip of adhesive.
13. The vessel according to claim 12, characterized in that the strip is arranged parallel to the corresponding edge of the preform.
14. The vessel according to any of the preceding claims, characterized in that the first adhesive area and / or the second adhesive area comprise at least one adhesive point.
15. The vessel according to claim 14, characterized in that several points of adhesive are arranged in a line parallel to the corresponding edge of the preform.
16. The vessel according to any of the preceding claims, characterized in that at least one additional area of adhesive is provided between the first and second areas of adhesive.
17. 17. The vessel according to any of the preceding claims, characterized in that a hot melt adhesive is provided on the first adhesive area and / or on the second adhesive area.
18. 18. The vessel according to one of claims 16 or 17, characterized in that a cold glue is provided on at least one additional area of adhesive. The vessel according to any of the preceding claims, characterized in that the liner is made of plastic or cardboard material. The vessel according to any of the preceding claims, characterized in that the inner wall of the vessel is provided with dis-insertion means. The vessel according to claim 20, characterized in that the de-insertion means are formed as at least one projection projecting into the interior of the vessel. The vessel according to claim 21, characterized in that the projection comprises a circumferential projection and / or at least one sectional projection.