The invention first of all relates to an object produced using the two-component injection-molding method.
Such objects are known and find use, for example, in the sector of foods packaging, or storage containers or lids for them, such as those for cosmetics and/or pharmaceutical products, for example. These consist of two plastic components, which can be injected at the same time to form the object. However, objects are also known in which first one component is injection-molded, and afterwards, the second component is injection-molded over it. The two components can have different forms with regard to their coloring. Objects are also known in which two components made of different plastics were used.
With regard to the state of the art described above, a technical problem of the invention is considered to be further improving an object of the type in question, in terms of production technology, in simple manner, with regard to the optical configuration and/or with regard to security characteristics or identification characteristics to be provided.
This problem is solved, first of all and essentially, by means of the object of claim 1, whereby the important factor is that an insertion part is disposed in the parting surface between the components. In this connection, the parting surface is the plane between the two plastic components, in which these components melt together during the course of the injection-molding that is carried out at the same time or one after the other. According to the invention, an insertion part is disposed in this plane—parting surface. This part can be laid onto the semi-finished product after the latter has been produced by injection-molding a first component, in order to afterwards have the second component injection-molded over it, together with the semi-finished product. Afterwards, the insertion part is permanently captured between the two plastic components. Also, the insertion part, at least in the case of an embodiment in which the two components completely cover the insertion part, in each instance, is protected against stresses that act on it from the outside. Thus, a manipulation of the insertion part, or a replacement of it, cannot be carried out without destruction. The insertion part can be disposed on the top of the first component, which faces the second component, i.e. in the region of the subsequent parting surface. Alternatively, the insertion part can also be positioned on the underside of the first component, facing the additional component to be injection-molded over it, in the region of the parting surface.
The objects of the additional claims will be explained below, with reference to the object of claim 1, but can be of importance also in their independent formulation.
Thus, it is further provided that the insertion part is a label. This label can contain information about the object, i.e. about a medium or the like that is stored in the object, which is configured as a container, for example. Also, this can be a label that contains a product advertisement. At least a first component is injection-molded behind such a label, preferably in the manner of an in-mold label, and afterwards, the second component is injection-molded over the first component and the in-mold label. Also, the insertion part can be an adhesive label, which is fixed in place, after the first component has been injection-molded to form a semi-finished product, on the latter, by means of the self-adhesive layer, and then has the second component injection-molded over it. A further development in which the insertion part is a rigid part, for example a metal part, such as a coin or the like, for example, brings particular optical and/or decorative advantages with it. While a label or an adhesive label or an in-mold label tend to be configured in flexible manner, because of the very slight thickness, in the pin range, which is generally selected, and therefore can go along with a curvature of the parting surface that might be provided, a rigid insertion part, particularly in the case of a curved parting surface, has a three-dimensional effect, since it tends to be set off from this parting surface. Even in interaction with a planar parting surface, the thickness measured perpendicular to the parting surface plane, of a rigid part, such as, in particular, a coin, has an effect. In the case of a parting surface that runs in curved manner, the rigid part can be disposed both in front of the parting surface, tangentially touching it, and behind the parting surface, tangentially touching it, looking from the same direction. As another alternative, the rigid part can also intersect the parting surface, in the manner of a secant. In the case of an inserted coin or another rigid embossed part, in particular, this part can furthermore achieve an optical effect so that a shadow is cast in this manner. Also, the insertion part can be an electrical functional foil, for example in the form of a transponder or other contact-free ID systems, such as a smart label or the like. Such functional foils serve, for example, for anti-theft protection and/or for identification during the course of scanning at the cash register in the case of objects for sale. Here, the embedding of the insertion part between the components that is proposed proves to be particularly advantageous, since this counteracts manipulation. Also, it is proposed that the insertion part is at least partially not covered by at least one of the layers. Accordingly, a window-like opening region can be provided in the covering region, relative to the insertion part. This window-like opening region can be formed both in the region of the object section produced by means of the first component, and in the region of the object section produced by means of the second component. Alternatively, the two half parts can possess such window-like opening in projection toward the enclosed insertion part.
Furthermore, the invention relates to an object according to the characteristics of the preamble of claim 1. In order to further improve such an object in an optical and/or functional manner, it is proposed that one of the layers is imprinted in the parting plane. For example, a semi-finished product produced from a first component can be passed to a printing device, which applies an imprint to the surface over which or behind which material is later injection-molded, which surface subsequently forms the parting plane, for example in the form of a logo and/or in the form of writing.
The invention also relates to an object according to the characteristics of the preamble of claim 1, whereby here, it is proposed, in order to accomplish the task, that one of the layers has an engraving-like formation in the region of the parting plane. By means of this engraving, recessed and elevated regions on the surface that faces the other component are worked free, and these achieve an appealing optical effect, particularly by means of a shadow effect.
The object of the additional claim will be explained below with reference to the object of claim 1 and/or the object of claim 8 and/or the object of claim 9, but can also be of importance in its independent formulation.
Thus, in a preferred embodiment of the object of the invention, it is proposed that at least one of the layers is kept transparent. This at least one layer is preferably the outer layer, which thus gives a view of the embedded insertion part. Alternatively, both layers can also be kept transparent, for example in the case of a beverage container or the like produced according to the invention. The different component layers can also be kept transparent in different colors.
Also, the invention relates to a method for the production of an object using the multi-component injection-molding method. In order to indicate a method of the type in question, by means of which an object having optically and/or functionally improved properties can be produced, it is proposed that first, a component is injection-molded, then the parting surface provided for injection-molding the second component over it is treated in the sense that a part is laid on or glued on, or an engraving or imprinting is carried out, and that then, the parting surface treated in this manner has the second component injection-molded over it, at least in part. In consequence of this embodiment according to the invention, a method is indicated by means of which an object produced using the multi-component injection-molding method can be produced, which object has an insertion part in the parting plane between the components, or in which one of the layers is imprinted in the parting plane, or provided with an engraving. In this method, different components can be used with regard to color, starting material, and/or transparency.
In the following, the invention will be explained in greater detail using the attached drawing, which merely shows several exemplary embodiments. This drawing shows:
First of all, an object 1 in the form of a jar having a screw-on lid is shown and described with reference to
The surface 4 of the first layer 2 that faces the second layer 3, together with the surface 5 of the second layer 3 that faces the first layer 2, forms a parting surface 6 between the layers 2 and 3, in which parting plane, formed by this parting surface 6, the components of the layers 2 and 3 are melted together with one another.
An insertion part 7 is disposed in this parting surface 6, according to the representations in
The insertion part 7 has the component for the second layer 3 injection-molded over it, and is thus completely enclosed in the object 1, both on the front and on the back, over its full area.
In this connection, the second layer 3 is preferably kept transparent. Accordingly, the view of the enclosed insertion part 7, which represents a logo, for example, is free.
The insertion part 7 can also be a functional part, for example a functional foil in the form of a transponder or the like. In this connection, it is advantageous if the second layer 3, like the first layer 2, as well, is not kept transparent.
According to the representation in
As another alternative, the insertion part 7 can be a rigid part 10, as shown in
As is particularly shown in
As can furthermore be seen in
All of the characteristics disclosed are essential to the invention (in and of themselves). The disclosure content of the related/attached priority documents (copy of the prior application) is hereby incorporated into the disclosure content of the application, to its full extent, also for the purpose of incorporating characteristics of these documents in claims of the present application.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP2006/066647 | 9/22/2006 | WO | 00 | 8/28/2009 |