ES2533323B1 - Procedure of coupling a bottle component for a cosmetic or perfumery product and corresponding component - Google Patents

Abstract

Coupling procedure of a bottle component (1) for a cosmetic or perfume product and corresponding component. The component comprises an inner support piece (2) and a laminated outer part (4), seen and configured to hide, the support piece (2). The support piece (2) and / or the outer part (4) have a lining (6). The procedure presents the steps of: [a] forming a coupling zone (8, 8 ’) on a contact surface between the inner and / or outer (2) support pieces (2), eroding by means of timely heat input on the contact surface for partially removing the coating (6) together with a surface layer of the material, [b] applying adhesive means (10) on the coupling area (8, 8 ’), and [c] joining said pieces of support (2) and exterior (4) laminate so that the adhesive means (10) come into contact with both pieces. In addition, the invention relates to a corresponding bottle component.

Description

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DESCRIPTION

Procedure of coupling a bottle component for a cosmetic or perfumery product and corresponding component

Field of the Invention

The invention relates to a method of coupling a bottle component for a cosmetic or perfumery product comprising an inner support piece and a laminated outer piece, seen and configured to at least partially hide said support piece, at least said support piece and / or said outer part having a coating.

The invention also relates to a bottle component for cosmetic or perfumery products manufactured from said process.

State of the art

In the cosmetics and perfumery sector, especially in the field of perfumes and colognes, bottles are an essential element in the communication strategy with consumers. In addition, these participate in a relevant way in the success of product marketing. Therefore, the bottles in this industry are much more than a simple container and their demands in terms of appearance are very high.

Often, the pieces seen are metallic or plastic sheet pieces that, either partially or entirely, are finished with coatings such as lacquers that simulate noble metals. On other occasions, the coatings are simply a layer of colored paint. Finally, sometimes the jars or caps thereof are manufactured from metal sheets also coated by electrolytic processes to prevent oxidation. For example, it is common to manufacture caps for perfume bottles in which the outer part of the cap, seen by the consumer, is made from aluminum sheet coated by an anodizing layer.

Obviously these outer parts of the jars are the parts seen and for their production processes they are the most expensive. Therefore, in order to avoid manufacturing the entire cap or the entire bottle from these pieces, the outer parts are mounted on simpler inner support pieces that are usually made of plastic. Thus, to form the corresponding bottle component, be it the cap or the body of the bottle, these outer and inner parts must be solidly joined together. Another type of interior pieces can be the body of the bottle itself, this being plastic or glass, while the exterior pieces can be decorative bases at the bottom of the bottle or metal or plastic plates that contain an inscription.

An especially desirable form of bonding due to its simplicity is adhesive bonding. However, adhesive bonding of this type of parts presents the problem that the parts can be disassembled after a certain time. This effect is especially pronounced when the pieces, whether exterior or interior, are coated, since the coated pieces are very smooth and the adhesive cannot adhere properly to its surface.

Another problem added to this effect is that the detachment between pieces is never instantaneous, but may occur after a few weeks or a few months. That is to say that when leaving the production line or in the store the components of the bottle are perfectly united. Then, as time passes, when the bottle is already in the consumer's house, these outer pieces can be detached. This may not be funclonally serious, but it does represent a detriment to the Image of the cosmetic or perfumery product.

One way to avoid this problem when the outer parts are thick is to mark the Interior surfaces by stamping or machining. However, this solution is unsatisfactory for this sector. On the one hand it is not economical and is not applicable to laminar parts, that is, thin wall. In this type of pieces, of thicknesses Less than about 3 mm, the Interior marks are easily visible from the outside of the piece. This effect of mareaje by the outer face of the seen piece is highly undesirable since it seriously compromises the appearance of the final product.

When the piece has a coating superimposed on the surface of the outer piece, in the case that the marking is carried out by stamping, the marks do not really reach the surface of the outer piece, since the coating is interposed. Therefore, the adhesive does not come into contact with the outer part, but only adheres to the coating.

Another problem occurs in the event that the Interior support pieces are also too smooth for the adhesive to adhere properly to its surface. It is often difficult to achieve roughness simply to achieve good adhesion. On other occasions, the interior pieces may also have a coating that is a byproduct of the production process of the piece itself, such as substances that

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They facilitate the demoulding and therefore make the piece dirty, preventing the adhesive from adhering correctly on its surface.

Summary of the invention

The purpose of the invention is to provide a method of coupling a bottle component for a cosmetic or perfumery product which being formed by a visible outer sheet and an inner support piece joined together by adhesive, and presenting at least one of both pieces a coating, avoid the separation of both pieces in the medium and long term and especially when the cosmetic product is already in the hands of the final consumer.

This purpose is achieved by a coupling procedure of the type indicated at the beginning, characterized in that it comprises the following steps:

[a] forming a coupling area on at least one contact surface between said inner support piece and / or said outer piece, eroding by means of a timely supply of heat on said at least one contact surface so that it is partially removed said coating together with a surface layer of the material constituting said at least one contact surface,

[b] apply adhesive means on said coupling area, and

[c] joining said support piece with said outer sheet piece so that said adhesive means come into contact with both pieces in said coupling area.

In the invention, the coating of the pieces can be provided on the inner support pieces, the exterior view pieces or even on both pieces simultaneously. Precisely it is usually the piece that presents the coating that produces more problems with the adhesion of the glue.

On the other hand, it is important to emphasize that the coating does not have to be definitive, that is, it forms part of the finished product. In particular, not only the metallic or colored finishes applied to the product by means of physical-chemical processes can be included in the coating concept, but they can also be waste derived from the manufacturing processes of the inner and / or outer part and eventually eliminated alone after a while. However, in this second case it may happen that at the time of joining the outer part with the inner part, the coating has not yet been absorbed or evaporated and makes adhesion difficult. For example, in some molded parts it is not uncommon for silicones or soaps to be applied to facilitate demolding during shaping. These by-products themselves form a coating that hinders the adhesion of the glue. A first solution would be to clean the pieces one by one, but this can be costly and requires the introduction of intermediate stages, for example, washing, rinsing and subsequent drying that do not really add value to the product. Instead, the invention manages to avoid these stages.

In the process according to the invention, the coupling zone is formed by the process of eroding by timely heat input. This punctual heat removes not only the coating but also a surface layer of the material of the inner and / or outer parts. Thanks to this procedure, an especially advantageous effect is achieved. First of all, it is guaranteed that the coating is removed in the treated area. This means that the adhesive can penetrate through the coating and can adhere directly to the surface of the material that constitutes the piece itself, which guarantees a good grip. On the other hand, and already applied to the exterior parts seen, although there is a local heating in the coupling area, this does not leave any mark on the visible surface of the piece, so that the external appearance is not affected of the product.

Furthermore, the invention encompasses a series of preferred features that are the subject of the dependent claims and whose usefulness will be highlighted later in the detailed description of an embodiment of the invention.

Preferably said outer sheet piece is metallic and the process further comprises a previous stage of forming said coating by applying said coating by electrolytic means.

Alternatively, said plastic sheet outer part and the process further comprises a previous stage of forming said coating by lacquering.

Preferably, the support piece is metallic and the process further comprises a previous step of forming said coating by applying said coating by electrolytic means.

Alternatively, the support piece is metal, glass or plastic and the process also comprises a previous stage of forming said coating by lacquering.

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In another embodiment the support piece is metallic, glass or plastic and said coating is a by-product derived from the manufacturing process of said support piece.

In an embodiment of the process the stage of forming a coupling zone is carried out by means of a laser beam, which being a very concentrated beam allows the area affected by heat to be reduced to a maximum and therefore can be heated faster. and the risk of markings on the outer surface of the part due to overheating is reduced.

Especially preferably, the laser beam has a power between 10 and 50 W and a frequency between 20 and 100 kHz.

In another embodiment, the forming stage of said coupling zone consists in making a continuous, changing direction groove without said groove intersecting on itself, which reduces the machining time.

In another alternative embodiment, the step of forming said coupling zone consists in making a plurality of grooves, intersecting said plurality of grooves with each other, which improves the adhesion between pieces since it increases the roughness in the area.

In a third embodiment, the formation stage of said coupling zone consists of making at least one groove, changing direction, intersecting said groove on itself, which allows to take advantage of both systems defined above.

Finally, the invention also poses the problem of proposing a bottle component for a cosmetic product formed by a visible outer piece and an inner support piece that solves the aforementioned problems. This problem is solved by a component comprising a coupling area in at least one contact surface between said inner support piece and / or said outer piece, as a groove made by erosion by punctual heat input on said at least a contact surface so that said coating is partially removed together with a surface layer of the material constituting said at least one contact surface, said groove having a depth greater than that of said coating, and adhesive means provided in said area of coupling such that they connect said support piece and said outer sheet part through said at least one contact surface.

Especially preferably said component is the bottle cap of a cosmetic product.

In a particularly preferred embodiment, the groove is made by a laser beam.

Especially preferably, the groove has a depth between 3 and 20 pyrn, since it minimizes production times, while optimizing the adhesion between the pieces.

Likewise, the invention also encompasses other detail features illustrated in the detailed description of an embodiment of the invention and in the accompanying figures.

Brief description of the drawings

Other advantages and characteristics of the invention can be seen from the following description, in which, without any limitation, preferred embodiments of the invention are mentioned, mentioning the accompanying drawings. The figures show:

Fig. 1, a cut-away view of a first embodiment of the laminar outer part of the bottle component for cosmetic product according to the invention.

Fig. 2, a cut-away view of the outer sheet after application of a decorative coating.

Fig. 3, a cut-away view of the outer laminar piece after the formation of the coupling area.

Figs. 3A to 3C, different embodiments of the coupling area in the laminar outer part of the bottle component according to the invention.

Fig. 4, a cut-away view of the bottle component for cosmetic product according to the invention in the assembled state, after the coupling of the laminar outer part of Figures 1 to 3 with an inner support piece.

Fig. 5, an enlarged detail of the coupling area A of Figure 4.

Fig. 6, a cut-away view of a second embodiment of the bottle component for cosmetic product according to the invention in the assembled state.

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Fig. 7, a cut-away view of the bottle component for cosmetic product according to the invention in the assembled state, with both parts provided with coating.

Fig. 8, an enlarged detail of the coupling area B of Figure 7.

Detailed description of embodiments of the invention

A first embodiment of a component for a cosmetic product bottle according to the invention is shown in Figures 1 to 5. As an example, the figures show schematically the case of a perfume bottle cap. However, the invention would also be applicable to the main body of the perfume bottle. For simplicity, the main body of the bottle has not been represented in the figures, which also does not affect the scope of the invention.

Thus, the bottle component for cosmetic product according to the invention comprises an inner support piece 2, preferably made of plastic, and a laminar outer piece 4 which conceals the support piece 2. in the assembled state of Figure 5. the invention, the outer part 4 can hide the inner support part 2 completely or only partially, therefore the degree of concealment of the support part 2 is not essential for the invention.

In Figure 1, the initial process phase according to the invention is shown. In it, the outer piece 4 can be seen in the rough, that is, as it comes out of the mold, if it is a piece of plastic or as it comes out of the die matrix if it is a metal piece, for example aluminum.

In this first embodiment, the outer part 4 is a hollow truncated conical pyramid of embedded aluminum, and in particular of laminated aluminum alloy 5657 or fQ.ll. In the first stage of the process, when the piece is metallic, the formation of a decorative coating 6 is provided. In this case, the coating 6 consists of an anodizing applied by electrolytic means. In this type of pieces, the anodizing usually has a depth between 3 and 20 pm (microns) and is embedded in the metal itself, as can be seen in detail (indicated by stars) in Figure 5. That is , that in this case, the coating is not superimposed on the metal piece, but is integrated into the structure of the piece itself.

Next, the process according to the invention provides for a deformation stage of a coupling area 8, 8 ’on the contact surface between the outer part 4 and the inner support part 2. The dimensions of the coupling area 8, 8 ’depend largely on the stresses that the joint between the two pieces must resist. In this embodiment, a first coupling area 8 is provided as a square in the inner minor base of the truncated conical pyramid and a second coupling area 8 'as a circumferential band, halfway up the outer part 4 Obviously, it is not essential that the second coupling zone 8 'be continuous, but that it could also be discrete at different points of the inner wall of the outer part.

These coupling areas 8, 8 'are obtained by eroding the inner surface of the outer part 4 by timely heat input, preferably by laser, so that the decorative lining 6 is partially removed together with a surface layer of the material constituting said piece. exterior 4. Thus, as can be seen in the enlarged detail of Figure 3, the erosion and extraction of material causes a groove 12 to be formed such that metallic material is extracted from the inner surface of the outer part 4.

The process according to the invention is especially suitable for the case of 4 laminar outer parts, that is to say parts with wall thicknesses from 0.2 mm (millimeters). Despite this, the formation of the coupling area has no upper limits in terms of wall thickness. The use of a laser beam of 10 to 50 W of power, a wavelength around 1070nm and a frequency between 20 and 100 kHz has also been found to be especially preferred. However, by way of example, another system suitable for the process would be electroerosion by means of an electrode comprising the desired grooves.

In the case of anodizing, it is not essential that the depth be greater than the thickness of the anodizing layer, since this coating 6 is already embedded in the material of the outer part 4 itself.

It is also important to note that the groove formed by the laser beam can have different shapes, as shown by way of example in Figures 3A to 3C.

In Figure 3, the extraction of material consists in making a plurality of grooves 12 that intersect with each other in such a way that it forms a mesh to ensure good adhesion afterwards, since the number of grip points for the adhesive is substantially increased.

In the case of Figure 3B, a plurality of parallel grooves have been made. However, in this case, each of the grooves 12 is continuous and changing direction in zigzag, without the groove 12 intersecting on itself.

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Finally, in Fig. 3C, a plurality of continuous grooves 12 are changed in a wavy direction and do not intersect with each other.

These last two variants allow the grooves to be made very quickly on the piece in which it is desired to remove the coating layer 6.

Alternatively, these variants could also be combined or made in other ways and that the grooves 12 intersect multiple times between them or between the same groove 12.

Finally, once a coupling zone has already been made, a final stage is provided in which adhesive means 10 are applied on the coupling zone 8, 8 'and immediately the outer laminar piece 4 is joined with the piece of support 2 to form component 1 as seen in Figures 5 and 6. This joint must be allowed to cure for at least 5 minutes before applying any type of load. The adhesive means 10 can be different glues or glues of both liquid or solid dosage, cold or hot. The use as adhesive adhesive means 10 known in the sector as pellet hotmelt (hot melt glue), with application temperature between 180 and 240 ° C, has also been found to be especially preferred.

It should be noted that the amount of adhesive used will also depend on the efforts that the joint must withstand. Figure 5 shows that the adhesive has been applied only to the coupling area 8, 8 ’, but if necessary, the amount used could be increased.

On the other hand, as can be seen in detail figure 6, the grooves 12 guarantee that the adhesive means 10 penetrate the structure of the outer part 4 and an intimate connection with it is achieved, without the coating 6 being able to affect this Union.

A second embodiment of the bottle component for cosmetic product according to the invention is shown in Figure 6. In this case, the main difference of this embodiment is that the outer part4 is made of plastic instead of being a sheet metal piece.

In this embodiment, in the step of forming the coating 6 the outer part 4 is subjected to a lacquering process. Thus, the coating layer 6 is not embedded in the structure of the outer part 4, but is an overlapping layer, as can be seen in the enlarged detail of the coupling area 8, 8 'of Figure 6. As already mentioned, in this type of pieces one of the problems that appeared in the case of stamping by stamping was that after stamping, the coating 6 continued to cover the marks made, which made it difficult to obtain good adhesion between the outer and inner pieces.

As can be seen in the enlarged detail of figure 6, thanks to the formation of the coupling area 8 'by the timely contribution of heat, the removal of the coating layer 6 is guaranteed and therefore a correct penetration of the adhesive means 10 inside the grooves 12 of the outer part.

Figures 7 and 8 show the case in which both the support piece 2, and the outer part 4 have some type of coating 6. As can be seen in Figure 8, the coating 6 of the outer part 4 has been reverted to characterized by stars, while that of the support piece 2 has been characterized by brush strokes, since this coating 6 corresponds to a by-product of the molding process of the support piece 2.

On this occasion, it has also been decided to form a coupling area 8, 8 'on the contact surface between the inner support part 2 and the outer part 4. Thanks to the process according to the invention, the support part 2 does not need be washed separately, but the use of heat is used to remove the lining 6 from the demould.

Finally, it should be noted that within the scope of the invention and although it has not been represented in the embodiments, it is also contemplated that only the inner support part 2 also has a coupling area 8, 8 'made by the timely contribution of hot.

In all the cases shown, it is achieved that the adhesive means 10 adhere intimately to the piece that has the coupling area 8, 8. This guarantees, therefore, that in the medium and long term this union is stable and therefore when the bottle of cosmetic product or perfumery is in the hands of the end user, the aesthetic appearance is preserved.

Claims (4)

5 10 fifteen twenty 25 30 35 40 Four. Five 1 Coupling procedure of a bottle component (1) for a cosmetic or perfume product comprising an inner support piece (2) and an outer laminar piece (4), seen and configured to hide, at least partially, said piece of support (2), said support piece (2) and / or said outer part (4) having a lining (6), characterized in that it comprises the following steps: [a] forming a coupling area (8, 8 ') on at least one contact surface between said inner support piece (2) and / or said outer piece (4), eroding by timely heat input on said by at least one contact surface so that said coating (6) is partially removed together with a surface layer of the material constituting said at least one contact surface, [b] apply adhesive means (10) on said coupling area (8, 8 ’), and [c] joining said support piece (2) with said outer piece (4) laminate so that said adhesive means (10) come into contact with both pieces in said coupling area (8, 8 ’). 2. - Coupling method according to claim 1, characterized in that said sheet outer part (4) is metallic and the method further comprises a previous step of forming said coating (6) by applying said coating (6) by electrolytic means . 3. - Coupling method according to claim 1, characterized in that said sheet outer part (4) is made of plastic and the method further comprises a previous stage of forming said coating (6) by lacquering. 4. - Coupling method according to any one of claims 1 to 3, characterized in that said support piece (2) is metallic and the method further comprises a previous step of forming said coating (6) by applying said coating (6 ) by electrolytic means. 5 - Coupling process according to any one of claims 1 to 3, characterized in that said support piece (2) is metallic, glass or plastic and the method further comprises a previous step of forming said coating (6) by lacquering. 6 - Coupling process according to any one of claims 1 to 3, characterized in that said support piece (2) is metallic, glass or plastic and said coating (6) is a by-product derived from the manufacturing process of said support piece (2). 7 - Coupling process according to any one of claims 1 to 6, characterized in that said step of forming a coupling zone (8, 8 ') is carried out by means of a laser beam. 8 - Coupling method according to claim 7, characterized in that said laser beam has a power between 10 and 50 W and a frequency between 20-100 kHz. 9 - Coupling method according to any one of claims 1 to 8, characterized in that said stepping stage of said coupling zone (8, 8 ') consists of making a continuous groove (12), changing direction without said groove ( 12) intersect on itself. 10 - Coupling method according to any one of claims 1 to 8, characterized in that said step of forming said coupling zone (8, 8 ') consists in making a plurality of grooves (12), said plurality of grooves intersecting (12 ) each. 11- Coupling method according to any one of claims 1 to 8, characterized in that said step of forming said coupling zone (8, 8 ') consists of making at least one groove (12), changing direction, intersecting said groove (12) on itself. 12 - Bottle component (1) for a cosmetic or perfumery product comprising an inner support piece (2) and an outer laminar piece (4) configured to hide, at least partially, said support piece (2), said support piece (2) and / or said outer part (4) having a lining (6), characterized in that it comprises [a] a coupling area (8, 8 ') in at least one contact surface between said inner support piece (2) and / or said outer part (4), as a groove (12) made by erosion by timely supply of heat on said at least one contact surface so that said coating (6) is partially removed together with a surface layer of the material constituting said at least one contact surface, said groove (12) having a depth greater than that of said coating (6), and 5 [b] adhesive means (10) provided in said coupling area (8, 8 ') such that they join said support piece (2) and said outer part (4) laminate through said at least one contact surface. 13 - Bottle component (1) for a cosmetic product according to claim 12, characterized in that said groove (12) is made by a laser beam. 10 14 - Bottle component (1) for a cosmetic product according to claim 12 or 13, characterized in that said groove (12) has a depth between 3 and 20 pm.