Patent Application
20150175326
The invention is encompassed in the technical field of bottle capsules or foils.
The use of bottle capsules or foils typically made of tin or aluminum is known in the state of the art. Likewise, different types of devices that make tearing said foils easier are known, such that the capsule part remains attached to the neck of the bottle, whereas the upper part can be separated, allowing access to the cork or stopper.
Specifically, Spanish utility model publication number ES-1021394-U (corresponding to application number U9201647) provides an arrangement ready to be torn formed by a tearing line perpendicular to the axis of the bottle, a plurality of small oblique sections spaced from one another along the line emerging from said line. The orientation of said sections determines the opening direction of the system. Nevertheless, this design has the drawback that, as a result of tearing away the line, the oblique sections generate burrs that may cut the user.
Spanish utility model publication number ES-1075642-U (corresponding to application number U201131081) proposes a solution to this drawback. More specifically, ES-1075642-U solves the drawback by means of a tearing device formed by two score lines parallel to one another and perpendicular to the axis of the bottle which, when being torn away, tend to not generate burrs that may be detrimental to the user. The device can also comprise a tongue to start tearing away the band determined by the score lines; this tongue is defined by a cutout in the area marked by the score lines, and the shape of which can vary according to the specific design of the device.
Foil capsules for wine and liquor bottles were initially made of lead with outer and inner tin coating. New types of capsules had to be developed due to the prohibition on using lead and some other heavy metals in such packagings. Capsules were generally made of pure tin since this metal offers good characteristics due to being ductile and malleable.
Nevertheless, in recent years and due to the steep increase in tin price, other alternatives were sought and foil capsules made of deep drawn aluminum have been used. In fact, aluminum had already been considered an interesting alternative to tin, but it never really reached the desired popularity as it has a serious drawback in opening the capsule. Since aluminum is harder than tin, upon cutting the capsule to remove it from the bottle, aluminum tends to leave a series of burrs that can cut the consumer. Furthermore, the solution proposed in ES-1075642-U may seem rather unsuitable for capsules made of aluminum, given that, due to the hardness of aluminum, it may be difficult to establish the proposed score lines in capsules made of that material, particularly if said material is of high purity.
In other words, and although the solution proposed in ES-1075642-U can be used to reduce burrs, it has been considered that it may be necessary to improve such capsules and the methods and machines for production thereof, in order to improve product quality, reduce the risk of being out by burrs, improve the homogeneity of the score lines, and increase manufacturing process efficiency.
A first aspect of the invention relates to a foil capsule configured for being located in a neck of a bottle to cover a cork or stopper closing the bottle. The capsule comprises at least one score line and is made of a metal alloy comprising aluminum.
According to this aspect of the invention, the metal alloy comprises at least 99.5% by weight of aluminum.
In some embodiments of the invention, the capsule can comprise at least two score lines, said score lines being continuous, parallel to one another, and perpendicular to the axis of the bottle. It has been proven that these continuous score lines serve to reduce the tendency to form burrs when tearing the capsule, as described in ES-1075642-U, as well as to make opening the capsule easier. A machine such as that described below can be used to produce these score lines, also in a hard material such as an alloy with 99.5% or more by weight of aluminum.
The capsule can further comprise a cutout defining a tongue suitable for tearing a strip defined by the score lines upon pulling on said tongue. This serves to make tearing away the capsule easier, as described in ES-1075642-U.
Another aspect of the invention relates to a bottle comprising a bottle body and a neck, the bottle being closed by a stopper or by a natural or synthetic cork. The bottle comprises a foil capsule as described above covering the stopper or the cork.
Another aspect of the invention relates to a machine for making score lines in a foil capsule, for example, of the type described above. The machine comprises: a rotary element configured for being inserted in the capsule such that the capsule rotates on a longitudinal axis of the capsule when the rotary element rotates, and at least two cutting elements arranged to make the corresponding cutting lines as the rotary element rotates.
The cutting elements are arranged in a mounting configured such that it can rock in a plane about a pivoting axis, said longitudinal axis of the capsule being perpendicular to said plane. It has been proven that this configuration allows establishing a suitable, balanced and precise pressure on the capsule, through said cutting elements, such that both cutting lines have a substantially identical and controlled depth.
The two cutting elements can be arranged horizontally separated by a distance such that upon contacting the capsule assembled on the rotary element, said cutting elements contact said capsule each on one side of a plane of symmetry traversing the longitudinal axis of the capsule and the pivoting axis of the mounting. Thereby, since the cutting elements rest on two sides of the capsule, the contact between cutting element and capsule is maintained when the rotating element rotates, since the capsule and the rotary element serve to substantially block the pivoting of the mounting. For cutting a capsule, the rotary or rotating element can rotate at least 360 degrees in one direction or at least 180 degrees in both directions, from the starting position.
The mounting can be associated with (for example, pivotally assembled in) a moving head the position of which determines the pressure that the cutting elements apply on the capsule. Thereby, a precise pressure adapted to the specific characteristics of a capsule can be applied through the rocking mounting.
The cutting elements can be rotating cutting elements. It has been proven that the use of rotating cutting elements can be advantageous.
The two cutting elements can be located on opposite faces of the mounting. Therefore, these cutting elements can be located in two different planes parallel to the rocking plane and separated by a distance corresponding with the distance between the two score lines.
Another aspect of the invention relates to a method for making score lines in a foil capsule using a machine as described above. The method comprises the steps of:
locating the capsule in the rotary element,
positioning the cutting elements such that they exert a specific force on the capsule; and
rotating the rotary element such that the cutting elements produce respective score lines.
To complement the description that is being made and for the purpose of aiding to better understand the features of the invention according to several preferred practical embodiments thereof, a set of drawings is attached as an integral part of the description in which the following is depicted with an illustrative and non-limiting character:
Similarly,
These score lines can be continuous to minimize the risk of burrs, even in the case where the capsule is made substantially of aluminum.
On the other hand,
In this text, the words “comprise” and its variants (such as “comprising”, etc.) should not be interpreted in an excluding manner, i.e., they do not exclude the possibility that what is described may include other elements, steps, etc.
On the other hand, the invention is not limited to the specific embodiments which have been described but also encompasses, for example, the variants which can be made by a person having ordinary skill in the art (for example, in terms of the choice of materials, dimensions, components, configuration, etc.), within what is inferred from the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| P 201230508 | Apr 2012 | SE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/ES2012/070876 | 12/18/2012 | WO | 00 |
