DE4421663A1 - Sandwich component having a bearing body - Google Patents

Abstract

The invention describes a sandwich component (1) having a bearing body (3) of plastic (15) which can be melted again. In this case, there is moulded onto the bearing body (3) a layer (2) having characteristics and/or strength values which are at least mechanically different from said bearing body, the layer (2) being arranged within the bearing body (3). The layer (2) is formed integrally with the bearing body (3) and is arranged at least over a partial region (4, 9) approximately in a central region (5) between two mutually opposite surfaces (13, 14) of the bearing body (3). In this partial region (4, 9), the layer (2) is covered by the bearing body (3) with its two mutually opposite top sides (25, 26) facing the surfaces (13, 14) of the bearing body (3). The bearing body (3) is moulded on, connected in a positive-locking or non-positive manner, with at least one top side (25, 26) of the layer (2). <IMAGE>

Description

The invention relates to a sandwich component as it is in the preamble of claim ches 1 is described.

Various sandwich components are already known - according to EP-OS 0 199 708 - in which a layer or film made of leather or leather-like material is form-fitting is connected with a layer of plastic. This is done in the mold cavity, at for example an injection mold, a film or a layer of leather or leather-like material placed against at least one of the mold walls. The plastic is then introduced into the mold cavity in the flowable state, so that it has a positive connection with the during the solidification process Foil or the layer of leather or leather-like material is received. Such Sandwich components or sandwich components manufactured by such a method have a lot in practice, especially when used as watch straps well proven. However, it has been shown that in the different applications len for the production of such sandwich components not all requirements properly  could be fulfilled.

Furthermore, a watch band is known - according to DE-OS 18 06 449, - in which a me tallband is surrounded on all sides by a plastic sleeve, the two against overlying surfaces of the approximately in the central region of the watch strap Layer through openings in this are positively connected. The bracket of the through this layer spaced apart plastic layers takes place over the Plastic existing breakthroughs through webs. The plastic is with the Surfaces of the layer are not connected. This results in elastic deformation tape, in particular bending, to a shearing effect between the stainless steel, for example, act as a reinforcing insert the layer and the penetrating, made of plastic webs that at A longer period of use leads to the webs becoming separated from the layer are severed and the surface layers of the plastic then relative to Layers begin to move and due to different temperature effects throw bubbles, after which the component is completely destroyed or due to the different shear forces usually from one end of the Tape emerges and this is completely destroyed.

In another known watch band element - according to DE-OS 29 49 044 - is a pattern that provides the surface of the watch band with a pattern layer provided on the side opposite the decor also from Plastic existing reinforcement layer is applied. The watch band will manufactured in its development as a flat component, with the Reinforcement layer and the design layer on the opposite side is arranged. To complete the watch band, it is then folded up, the layer forming the reinforcement layer on the inside, that is to say in the central part watch band comes to rest. By heating the sandwich structure underneath The two layers of the watch band lying on top of each other become one pressure shaped watch strap. The two layers can be foamed by a ther moplastic film and a non-foamed thermoplastic film, for example one Polyvinyl chloride film and a polyurethane film can be formed. In this case, you can the two foils forming the reinforcement layer or the design layer if welded together in the edge parts. The manufacture of such watches Bracelets require an extensive process and a variety of individual ar steps, with minor liability errors after a very short time Period of use the watch strap is destroyed.  

The present invention has for its object a structure for To create sandwich component, which in addition to good mechanical strength also revealing, optical design and a diverse application in different most components.

This object of the invention is achieved by the characterizing part of patent claim 1 solved. It is advantageous with this configuration that in addition to the diverse design Possibilities due to the arrangement inside the support body in different different strength and design properties that can. Surprisingly, however, the force and / or positive connection of at least one top or the molding of the support body on at least one top created a one-piece component, depending on Design a flawless power transmission and fixation between the layers and the support body. On the other hand, this allows it to be surprisingly advantageous in a way, a wide variety of materials or now your own Use sandwich components to ensure a good connection between this layer and to achieve the surrounding supporting bodies.

A training according to claim 2 is also advantageous, since in particular heavily used areas or in zones with special surface properties ten, the layer arranged in the sandwich component in the desired areas Chen can also form a surface of the support body at the same time.

Furthermore, it is advantageous through the development according to claim 3 that by the coordination of the position of the layer in relation to the surfaces of the supporting body pers different deformation resistances or strength values and suspension properties of a sandwich component in a simple manner without the additional arrangement layers or layers can be reached.

However, training according to claim 4 is also possible, which also Layers of materials can be used that protect against environmental pollution, in particular moisture or the effects of temperature are not particularly high have stability.

Another development describes claim 5. This is advantageous from leadership form that an intimate positive connection or a perfect An  shape through the appropriate choice of the plastics of the supporting body and the layer te can be achieved, this intimate connection by flowing through the fusible plastic forming the support body is favored. In addition, these connecting webs formed through the openings of the supporting body due to the production of the layer from the same material are subjected to additional loads and about the same strain and Has shrink properties.

However, a further development according to claim 6 is also possible, which also Layers connected to the surrounding support body in a form-fitting manner or on this can be formed, which are usually not with a re-meltable Plastic can be connected. This is due to the arrangement of intermediate layers the surface of the layer possible. With such a training can therefore mer a ge with the material of the support body intimately connectable surface layer be chosen, which also the di. from their mechanical and thermal resistance direct application of meltable plastics of the supporting body without disadvantageous Changes in appearance or transparency are made possible.

But it is also possible to design according to claim 7, because of the Sandwich formation of the multilayer component higher bending strengths and through force-transmitting connection of the layer in such a sandwich component re bending or damping characteristics for a sandwich according to the invention component allows.

Another advantage is achieved by the embodiment according to claim 8, because there with different deformation properties and structures, such as se bars or fabric can be used as part of the layer and this nevertheless position perfectly in any shape within the sandwich component are cash.

The embodiment variant according to claim 9 is characterized in that from layers or layers produced in the various areas of the sandwich component can be embedded.

In the embodiment according to claim 10, it is advantageously achieved that the layers located within the tops of the component of this surrounding support body are protected or not affected during its manufacture  can be. This also makes it possible, among other things, to print special images and to arrange graphic design within the layer or the component without whose design is adversely affected in the manufacture of the support body.

The training according to claim 11 allows the adaptation of the Layer or the component achieved changes in the mechanical strength of the Sandwich component only through different spatial design or arrangement or forming the same in a one-piece component, whereby the number of one parts for producing a sandwich component according to the invention kept low can be.

But also the further embodiment according to claim 12 is advantageous because of construction le with low weight and high bending loads, but relatively small wall strengths used to reinforce sandwich components according to the invention can be.

The embodiment according to claim 13 is also advantageous, since it creates a Positioning the layer or the component in the interior of the support body via Va vacuum can take place, whereby the manufacture of such a sandwich component in particular in particular, its simultaneous embedding in a supporting body that surrounds it on all sides is greatly simplified.

The advantage of the training according to claim 14 is that within the Support body only a single part must be positioned.

A further development according to claim 15 is also advantageous since it corresponds to this The physical and mechanical properties of sandwich components can be achieved are protected from the environment by the surrounding supporting body.

The further embodiment according to claim 16 enables the grid-shaped Structure or breakthroughs an intimate networking of the support body with the layer or the layer.

Through the development according to claim 17, an inni is advantageously ge connection at least between the fibers or threads formed from plastic and the support body ensured.  

The training according to claim 18 allows easy adjustment of a position to desired different strength properties.

Particular advantages of the sandwich component are apparent in the design Claim 19 achieved because the material in question is processed relatively easily can be.

It is also advantageous to design the support body according to claim 20 because thereby matching the sandwich component to different environmental conditions is easily possible.

Training according to claim 21 is also possible, because on the one hand an optical or design-related design option and on the other hand through the Both cover layers optimal protection of the printed image from destruction or loading damage can be achieved.

Finally, a further development according to claim 22 is also advantageous because thereby one with respect to the edge regions of the sandwich component ne tensile strength or elongation properties favorable sandwich construction achieved becomes. This results in a sandwich component with one in the middle tensile position is arranged, which enables ent even in a deformed state to transmit speaking forces, whereby due to the increasing elongation properties a mutual solution or Delamination is avoided.

For a better understanding of the invention, this is based on the following described embodiments explained in more detail.

Show it:

Figure 1 is a side view of a sandwich component according to the invention, cut, according to the lines II in Fig. 2.

Fig. 2 shows the sandwich component according to the invention of Figure 1 in an end view, GE cut, according to the II-II in Fig. 1;

. Fig. 3 the sandwich component according to Figure 1 in end view in section along the Li nien III-III in Fig. 1;

. Fig. 4 is the sandwich component according to Figures 1 to 3, in front view, in section, accelerator as the lines IV-IV in Fig. 1;

Fig. 5 the sandwich component according to Figures 1 to 4 in plan view.

. Fig. 6 is the sandwich component according to the invention of Figs 1 to 5 in a nansicht Stir, corresponding to the section according to the lines IV-IV in Figure 1, but with a different arrangement of the layer in the area of the surface of the support body.

Fig. Intersected another sandwich component according to the invention in side view, ge 7;

. Fig. 8 shows the sandwich component of Figure 7 in a front view cut according to the Li nien VIII-VIII in Fig. 7;

. Fig. 9 shows the sandwich component according to the invention according to Figures 7 and 8 in view Stirnan cut according to the lines IX-IX in FIG. 7;

FIG. 10 illustrates another embodiment of the layer according to the invention in one component, for example in its arrangement in the sandwich component according to Figure 7 in section along the lines XX.

Fig. 11 another sandwich component according to the invention in plan view and simplified, schematic representation, partly in section;

Fig. 12, the sandwich component according to the invention of Figure 11 in side view, GE cut, along the lines XII-XII in Fig. 11;

. FIG. 13 is the sandwich component according to Fig 11 or 12 in end view, in section, accelerator as the lines XIII-XIII in Fig. 12;

Fig. 14 another sandwich component according to the invention in front view, cut th, with an embodiment of the layer according to the invention;

Fig another embodiment of a sandwich component according to the invention in side view, cut. 15;

Fig. 16 is another embodiment of a sandwich component according to the invention s, cut in side view;

Fig. 17 16 in end view, cut the sandwich component of Figure according to the lines XVII-XVII in FIG. 16.;

FIG. 18 is a sandwich component according to the invention in front view, in section, forming with a different arrangement of the layer member;

Fig. 19 is another embodiment of a construction according to the invention formed partly in plan view, in which the layer resting on the parts of the supporting body are removed;

FIG. 20 is a further cut sandwich component according to the invention in side view, ge;

Fig. 21 is a mold for producing a sandwich component according to the invention in side view, sectioned and greatly simplified cal matic representation.

In Figs. 1 to 5 according to the invention a sandwich component 1 is shown from a layer 2 and a layer 2 surrounding this supporting body 3 is formed. A partial area 4 of this layer 2 is arranged approximately in a central area 5 , that is to say at a half height 6 of a total height 7 of the sandwich component 1 and is integrally connected to a further partial area 9 via a spatially deformed partial area 8 , which in the direction of the total height 7 of the sandwich component 1 is arranged offset. This partial area 9 of the layer 2 is connected via a further transition area 10 to a partial area 11 which detects a surface 12 of the sandwich component 1 . The other surfaces 13 and 14 are formed by the support body 3 or this bil denden re-meltable plastic 15 .

The layer 2 in the present exemplary embodiment consists of a single-layer film 16 made of plastic. The layer 2 or its end faces 17 , 18 end flush with end faces 19 , 20 . In the region of side surfaces 21 , 22 , side edges 23 , 24 are covered by the support body 3 or, like upper sides 25 , 26 of the layer 2, are covered by the support body 3 .

As can be seen further Figs. 3 and 5, the sandwich component 1 in about the area of a center of its length 27, a constriction 28. In this area, the side edges 23 , 24 in turn are flush with the side surfaces 21 , 22 of the support body 3 .

Following this constriction 28 then the layer 2 extends over the transition region 10 from the central region of the sandwich component 1 in the area of the upper surface 12 of the sandwich component 1 and forms the portion 11 of the layer 2, the surface 12 of the sandwich component made. This is best seen in Fig. 4.

Through this course of the layer 2 , a simple configuration of the bending curve or the strength properties of the sandwich component 1 can now be achieved. In addition, the layer 2 , if desired, can also form part of the upper surface 12 of the sandwich component, for example to cause a different effect of the mechanical properties due to the eccentric arrangement, in particular when the sandwich component is bent. In the context of the invention, it is of course also possible that the layer 2 can run ver continuously over the entire length 27 of the sandwich component 1 in the central region of the total height 7 , for example to cover the side edges 23 , 24 of the support body 3 over the entire length.

Similarly, the layer 2 can of course also have a uniform width over the entire length 27 .

To protect the side edges 23 , 24 , as can best be seen as a variant from FIG. 6, especially when the layer 2 forms the surface 12 of the sandwich component 1 , these can be spatially deformed in such a way that the side edges 23 , 24 are embedded in the support body 3 . This makes it even more difficult to detach the layer 2 in the area of the surface 12 and a transition free of cut edges between the layer 2 and the support body 3 or its side surfaces 21 , 22 is sufficient.

The plastic 15 of the support body 3 is remeltable and preferably processable by injection molding. Materials such as PP, POM, ABS, SAN, PMMA, PPU, EEA, PUR, but preferably also PPU, PC or PP can be used as the plastic. In contrast, it can prove to be advantageous if the layer 2 is used by materials such as PVC, PMMA, PP, PE, PETP or the like.

In Figs. 7 through 9, another embodiment is a sandwich component 1 is Ge, the massive, a receiving bore 30 having supporting body 3 about understood that tapers from the receiving bore 30 receiving the end face 19 toward the end face 20. The support body has a greater overall height 7 in the area of its end face 19 than in the area of the opposite end face 20 . Accordingly, the layer embedded in this component runs spatially curved in the area with a greater overall height 7 and forms, for example, an approximately U-shaped half-shell, while it has a flat course in a section 32 that adjoins a transition area 31 .

Through this spatial design of the layer 2 , a targeted reinforcement, for example the bending stiffness through the design as a U-shaped profile 33, as can be seen from FIGS. 8 and 9, can be achieved. The layer 2 presented in this exemplary embodiment is again produced by a layer or a film, a net, woven or knitted fabric from a wide variety of previously mentioned materials.

Based on the illustration in FIG. 10, however, a section along lines XX in FIG. 7 shows as an embodiment variant that this layer 2 can also be formed by a multi-layer component 34 .

It should be noted at this point that for better understanding of the exemplary embodiments, the dimensions, in particular thicknesses, of the individual layers or layers or components shown and their relationships, for example to the supporting body 3 or other components, are severely distorted and exaggerated in size and are not lifelike Represent the proportions of the actual sandwich component.

The layer 2 according to the invention or the component 34 now consists of a cover layer 35 and a cover layer 36 . Both the cover layer 35 and the cover layer 36 can be formed by a plastic film. The cover layers 35 , 36 can also have completely different material properties, for example a different elastic coefficient or different expansion properties, as is shown purely schematically by different hatching of the cover layers. In the illustrated embodiment, the modulus of elasticity or the expansion coefficient of the cover layer 35 would be higher than that of the cover layer 36 , since this is already arranged closer to the central region 5 of the support body 3 and is therefore no longer exposed to such high strains in the event of a spatial deformation, such as for example Cover layer 35 . The support body 3 can, for example, have an even higher elasticity than the cover layer 35 , as is indicated by a further hatching.

A printed image 39 formed by different color layers 37 , 38 is arranged between the cover layers 35 , 36 . The spaces between the individual color layers 37 , 38 and between the printed image 39 and the cover layer 35 are covered with an intermediate layer 40 , e.g. B. an adhesive layer or a protective lacquer, fills out. This creates a flat connection surface, which enables problem-free and permanent connection of the cover layers 35 , 36 and the printed image 39 .

The cover layers 35 , 36 can, for. B. by the influences of weather, UV radiation or mechanical stresses a high resistance ent opposing material, such as PVC, PMMA, PP, PE, PETP or the like. These different materials can also be mixed with various stabilizers or the like, for example to prevent the passage of UV or other radiation, if possible.

Above all, it is also possible to use materials for the cover layers 35 and 36 which enable good adhesion when molding in the course of a plastic injection molding operation. At the same time can be ensured by using appropriate materia lines for the cover layers 35 , 36 that by the appearance of the flowing, plasticized or liquid plastic when molding the Tragkör pers 3 to the layer 2, the print image 39 or the layer 2 in their Surface area is not destroyed or changed unintentionally. In this way, however, a transparent design required for the sandwich component 1 can also be ensured at any time.

The intermediate layer 40 can of course also take up the printed image 39 or the color layers 37 , 38 and, for example, on a layer of textile or a grid or net or a mat, in particular made of metal or any other fibers or threads or a knitted fabric or Be formed. However, it is also possible to produce the intermediate layer 40 from paper, for example by means of a printed layer. However, it can also be formed by any plastics, plastic films or moldings or the like.

Such a structure of a sandwich component 1 can be used especially for flexible sandwiching components, such as belts, belts, mats or the like.

In Figs. 11 to 13 is another embodiment of an inventive sandwich component 1, which may turn for example, as 41 Uhrarmbandteil Ver illustrated.

This watch band part 41 is equipped in its two end regions with an eyelet 42 , which has a bore 43 for receiving a mounting pin of a watch case or a buckle for a watch band.

Watch band parts or watch band parts formed from such watch band parts 41 can transmit a high tensile force in the longitudinal directions, on the other hand, however, between the two eyelets 42 deformations and parallel to the bores 43 , de axes oppose as little resistance as possible and in the direction perpendicular to the surfaces 13 or 14 be as supple as possible. Furthermore, it is important to ensure a high tear-out strength in the area of the eyelets 42 .

To solve these apparently fundamentally opposing requirements, the watch band part 41 , which forms the sandwich component 1, is reinforced by a layer 2 formed by a component 34 .

As shown in particular in the overview from FIGS. 11 to 13, the layer 2 is composed of two layers 44 and 45 . The layer 44 consists, for example, of a lattice or fabric made of threads 46 , which can be formed from metal, ceramic, graphite, glass or a wide variety of, preferably highly tear-resistant plastics, such as optionally also from natural fibers or threads or threads composed of one or more materials . This layer 44 is now connected via a connecting layer 47 , for example an adhesive layer or by a lamination to the layer 45 formed by a film or a web of other materials and / or by needling to it. The layer 45 has very little or no air permeability, so that the component 34 can be held in any position, in particular also in the spatially deformed position shown in FIG. 12, using handling devices which operate by means of vacuum . As a result, it is possible to apply the plastic 15 required for the production of the day body 3 to the upper sides 25 , 26 of the component or to form the support body 3 on the component 34 in the course of an injection molding operation.

By choosing this component, for example by using a grid or mesh for the layer 44 , a sufficiently high tensile strength and at the same time sufficient flexibility against deformations from the plane shown in FIG. 1 can be achieved in the direction perpendicular thereto.

In order to support this elastic effect, the component between the two eyelets 42 has a smaller width 48 than in the area of the two eyelets 42 , with a width 49 in the area of the eyelets 42 also being less than a total width 50 of the watch strap part 41 .

Of course, instead of the grid or mesh shown, a woven fabric or knitted fabric or the like can be made from such threads 46 or fibers. Due to the simultaneous and complete coverage of both the upper sides 25 , 26 and the side edges 23 , 24 of the component with the support body 3 , the component 34 is protected accordingly from external influences, in particular liquids, acids or alkalis.

Of course, with such an arrangement, paper, mica flakes etc. can also be used as material for the layer 44 .

In Fig. 14 a further possible embodiment of a sandwich component 1 is shown, in which a layer 2 is completely surrounded by the support body 3 , which is designed as a multilayer component 34 .

This component in turn consists of a net or lattice-shaped layer 44 which, as already described in the previous exemplary embodiment, can be produced from the most diverse materials and shapes. For example, these can also be extremely thin, highly flexible, metallic foils or the like. On both sides of this layer 44 is a layer 45 , for example made of a plastic film with medium elongation or a mean value of a modulus of elasticity, which, for example, already allows greater elongation than layer 44 . On these additional layers 45 , a carrier layer 51 is arranged via a connecting layer 47 , on which, for example, a printed image 39 is applied on a side facing the surface 13 . A protective layer 52 is arranged over an intermediate layer 40 , which can also be an adhesive layer or over a further connecting layer, which is attached to the water intermediate layer 40 in the direction of the surface 13 . A similar layer structure of the component 34 is also shown following the support layer 51 in the direction of the surface 14 of the support body 3 . The protective layer 52 is molded onto the carrier layer 51 via the intermediate layer 40 . It is only shown in this embodiment that no printed image 39 is arranged in the intermediate layer 40 or on the carrier layer 51 . It is of course also possible to arrange the printed image 39 also in this intermediate layer 40 or on the carrier layer 51 .

The construction of this component 34 from these multiple layers or a similar construction now brings the following advantages. For example, by arranging several layers one above the other, in particular the layer 45 and the carrier layer 51 connected via the connecting layer 47 and a further protective layer 52, the elongation factor or the elongation property of each layer which is closer to the surface 13 or 14 can be increased, so that the large differences in the different expansion between the layer 44 , which is extremely rigid and the plastic body 15 consisting of 3 can be gradually reduced and the shear stresses between the individual layers, the adhesiveness of the individual connecting layers or the adhesive used and resins or the high-frequency welding rivets are not exceeded. In this way, the lamination between the individual layers or layers can be prevented. Furthermore, it is also possible in this network to integrate a printed image 39 into the component 34 .

In this connection, the protective layers 52 , especially the printed image 39 , but also the layers and layers arranged underneath, can also protect the plastic 15 of the supporting body 3 against excessive pressure, temperature or shear stresses. Of course, in order to establish a perfect connection between the support body 3 and these protective layers 52 , an adhesion promoter is applied to the individual layers or layers before their connection or before the application of the connection layer 47 . This is preferred if one of the protective layers 52 is formed from polytetrafluoroethylene in order, for example, to withstand the stresses during the introduction of the liquid plastic material at high temperature.

At this point it should be noted that it is certainly not necessary within the scope of the invention that, as is also shown in FIG. 14, for example, the individual layers or layers must be arranged symmetrically with respect to layer 44 or a reinforcing component, but rather each can, for example, also be different according to their stress, UV barrier films and transparent films and also printed images produced by screen and / or offset and / or gravure printing being able to be integrated into such sandwich components 1 .

In Fig. 15 an embodiment of a sandwich component 1 is shown wherein the just in case a layer 2 formed by a component 34 is surrounded on all sides by a supporting body 3 made of plastic. In this case, the component 34 consists of a layer 44 , for example a woven or knitted fabric made of fibers 53 or threads 46, and is through a connecting layer 47 , for example an adhesive or a resin or by the adhesive effect when extruding the layer 45 a Kunststoffo lie or other gastight foils, such as an aluminum foil, can be formed in thicknesses between 0.01 and 0.4 mm.

As further indicated by dashed lines, it is also possible to cover the layer 44 on both sides with a layer 45 arranged thereon or the layer 44 , especially if this is a woven or knitted fabric or a paper or the like, between the two layers 45 to be laminated.

In Figs. 16 and 17, a sandwich component 1 is shown in which portions 54, 55 of a component 34 of a layer 44, which may in turn be formed of a woven fabric, a paper or the like, with a particular air-impermeable sheet 45 from a film, made of plastic, metal or the like are non-positively and / or positively connected.

While the major part of the component 34 is now arranged in a central region of the support body 3, which is indicated by an axis of symmetry 56 , the partial regions 54 , 55 of the component 34 are offset in height such that, for example, the layer 44 made of a woven, knitted fabric, Net, grid or paper forms the surfaces 12 of the sandwich component 1 .

This creates support surfaces in these areas that have a different surface structure or other mechanical and physical properties. For example, a potential-free support of a sandwich component 1 on a conductive surface can be achieved, such as the formation of skin-friendly surfaces 12 in the maximum curvature range of the watch straps.

As can be seen better from FIG. 17, the partial areas 54 , 55 can also be displaced into the area of surfaces 13 , 14 in such a way that the component 34 is close to the surface 14 or at a short distance 57 below the surface 14 is arranged. The component 34 is thus covered in this area by a thin cover layer 58 of the support body 3 and protected from environmental influences. The layers 44 , 45 can again be designed in accordance with the extensive explanations of the exemplary embodiments above.

A further possible embodiment for the arrangement of the layer 2 is shown in FIG. 18, in which the component 34 is in turn composed of two layers 44 and 45 . The component 34 consists of two protective layers 52 , for example made of plastic or metal, which is liquid-tight and at least one of which is gas-tight. Between these two protective layers 52 , which form the layer 44 and 45 , a design layer 59 is arranged, for example, which consists of an at least one-sided printed paper. Of course, this paper can also be printed on both sides, before it is printed with different patterns. The connection of this design layer 59 with the protective layers 52 takes place, for example, via connection layers 47 not shown or directly via the lacquer applied to the design layer 59 . Of course, it is also possible to provide the design layer 59 with a single or double-acting thermal transfer film, so that when the plastic 15 of the support body 3 is introduced, the resulting temperature and pressure effects result in a thermosiphon effect of the color in the protective layers 52 and thereby one extremely durable design can be achieved without additional operations.

Furthermore, it is shown in this embodiment that by a spatial deformation of the layer 2 or the component 34 due to the profile effect of the construction part 34, a corresponding strength stiffening of a sandwich component 1 can be achieved. Furthermore, it is also shown here that, for example with a corresponding arrangement of the component 34, the side surfaces 21 , 22 , in particular their surfaces, can be formed by the layer 44 , while for example the surfaces 13 and 14 can be formed by the plastic 15 of the support body 3 .

Of course, an inverse configuration is also possible or one of the side surfaces 21 , 22 and one of the surfaces 13 and 14 can optionally be formed by the layer 44 .

In the embodiment shown in Fig. 19, a layer 2 is shown, which is embedded in the support body 3 and which can be provided with openings 60 distributed over the top 25 through.

If the layer 2 is formed, for example, from a plastic or by a sandwich component in which no sharp-edged metal parts or foils are contained, an even more intimate adherence of the support body 3 to the upper sides 25 , 26 of the layer 2 can be achieved by the through the layer 2 through connecting parts 61 can be reached. By the ratio of the strength properties of the plastic material of the support body 3 and the materials of the layer 2 , a shear stress between the layer 2 and the connecting parts 61 is avoided.

In Fig. 20, a further embodiment of a sandwich soft component 1 according to the invention is shown. In this, two layers 2 are arranged in the sandwich component 1 and extend over its length 27 .

While in the subareas of the layers 2 , in which these surfaces 12 form the sandwich component, the supporting bodies 3 have a relatively large cross section, a connecting area 62 has a smaller cross section.

In order to obtain sufficient bending rigidity in this connection area 62, for example, the two layers 2 in this connection area 62 form a sandwich element 63 , in which a core 64 is inserted between the two layers 2 , which is connected to the two layers 2 by an adhesive. or welding operation or the like is connected.

As a result of the spaced arrangement of two tension bands through the layers 2 via a core 64 which compensates for the tensile and shear stresses, which mostly still has a low density and a modulus of elasticity, the bending stiffness of the sandwich component 1 , in particular in the connection area 62 , can be increased. Of course, within the scope of the present invention it is also readily possible to produce any of the components described using a separate sandwich element 63 with any structure of the cover layers or the core 64 .

In Fig. 21, a mold 65 , consisting of an upper tool part 66 and a lower tool part 66 is shown schematically. In a mold parting plane 67 , a sprue 68 is arranged, via which a liquefied plastic 15 in a mold cavity 69 , which is enclosed by the mold 65 , who can who introduced.

For positioning a layer 2 , which can be formed, for example, by a component 34 or a sandwich element 63 , vacuum suction devices 70 are arranged, which can also be used for the spatial deformation of the layer 2 .

After the plastic 15 has been introduced into the mold cavity 69 , and the coarse positioning of the layer 2 achieved thereby, the vacuum cups 70 can be moved out of the mold cavity 69 via a crossbar 71 , which is adjustably mounted in the mold 65 by means of a drive, so that even then the remaining cavities in the mold cavity 69 can still be filled with the liquefied or hardened plastic and a uniform, closed sandwich component 1 is reached after removal from the mold cavity 69 .

Finally, it should also be pointed out that for the individual layers 44 , 45 or the carrier layers 51 , protective layers 52 , cover layers 58 or design layers 59 made from a wide variety of materials, in particular, however, also by means of plastic films, in part from the examples below and which are not fully listed such as PVC (hard, soft), PC, PETP, PS, PA, CA, PP, PE, PMMA, ABS and EAA.

Furthermore, the formation of the layer 2 now opens up the possibility that when selecting the printing colors, the positioning of the printed image and the decoration, no such strong consideration of the tool design, such as the type and position of the sprue, inflow speed, processing temperatures, etc., is taken got to.

Furthermore, it is also possible that the connecting layers 47 can be formed by adhesion-promoting layers which, at room temperatures, allow only a slight adhesiveness to the positioned holding of the layers 44 , 45 or the different layers with one another, but their full adhesive action only occurs when they occur conventionally Develop processing temperatures and / or processing pressures. For example, hot-melt adhesive films can also be used for the connection.

Due to the multilayer structure of the layer 2 , it is also possible to create special optical effects or depth effects or different protective properties or marking features and, if appropriate, optical passage conditions for the sandwich component 1 constructed according to the invention.

Within the scope of the invention it is also possible, however, for the individual layers differently composed layers or layers the most varied The materials described can optionally be used with each other in order to achieve the desired to achieve optical or strength-related or physical effects. Thus, NEN any combination of individual features of the previously described Aus leadership examples form independent, inventive solutions.

Finally, it should be noted that for the most part for a better understanding and expanded representation of the layer structure of the layer 2 or the support body 3, often purely schematic and to scale, and to scale in different axial directions, greatly distorted representation and disproportionate thicknesses and widths or lengths of individual sandwich components, layers, layers, foils or the like were used.

Above all, the individual in FIGS. 1-5, 6; 7-9; 10; 11-13; 14; 15; 16, 17; 18; 19; 20; 21 form the subject of independent solutions according to the invention. The related tasks and solutions according to the invention can be found in the detailed descriptions of these figures.

Reference list

1 sandwich component
2 layers
3 supporting bodies
4 section
5 middle section
6 height
7 total height
8 section
9 section
10 transition area
11 section
12 surface
13 surface
14 surface
15 plastic
16 slide
17 end face
18 end face
19 end face
20 end face
21 side surface
22 side surface
23 side edge
24 side edge
25 top
26 top
27 length
28 constriction
30 location hole
31 transition area
32 section
33 profile
34 component
35 surface layer
36 outer layer
37 layers of paint
38 layers of paint
39 printed image
40 intermediate layers
41 watch band part
42 eyelet
43 hole
44 location
45 location
46 threads
47 connection layers
48 width
49 width
50 total width
51 carrier layer
52 protective layer
53 fiber
54 section
55 section
56 axis of symmetry
57 distance
58 surface course
59 design layers
60 breakthrough
61 connecting part
62 Connection area
63 sandwich element
64 core
65 molding tool
66 tool part
67 mold parting plane
68 sprue
69 mold cavity
70 vacuum cups
71 crosshead

Claims (22)

1. Sandwich component with a support body made of re-meltable plastic, and with a layer formed on the support body with at least mechanically different properties and / or strength values, the layer being arranged within the support body, characterized in that the layer ( 2 ) with the support body ( 3 ) is formed in one piece and is arranged at least over a partial area ( 4 , 9 ), for example in a central area ( 5 ) between two opposing surfaces ( 13 , 14 ) of the support body ( 3 ) and in this partial area ( 4 , 9 ) with their two opposing surfaces ( 13 , 14 ) of the support body ( 3 ) facing tops ( 25 , 26 ) of the support body ( 3 ) is covered and that the support body ( 3 ) with at least one top ( 25 , 26 ) force - And / or is integrally formed. 2. Sandwich component according to claim 1, characterized in that the layer te ( 2 ) has a partial area ( 11 ) which forms a surface ( 12 ) of the support body ( 3 ). 3. Sandwich component according to claim 1 or 2, characterized in that at least a portion of the layer ( 2 ) immediately below a thin upper surface ( 13 , 14 ) forming cover layer ( 58 ) in which the surface ( 13 , 14 ) facing th Edge region of the support body ( 3 ) is arranged. 4. Sandwich component according to one or more of claims 1 to 3, characterized in that the layer ( 2 ) is surrounded on all sides by the support body ( 3 ). 5. Sandwich component according to one or more of claims 1 to 4, characterized in that the layer ( 2 ) is formed by an existing plastic, preferably with openings ( 60 ) provided film ( 16 ). 6. Sandwich component according to one or more of claims 1 to 5, characterized in that the layer ( 2 ) is formed by a multi-layer component ( 34 ). 7. Sandwich component according to one or more of claims 1 to 6, characterized in that the multilayer component ( 34 ) has a sandwich structure. 8. Sandwich component according to one or more of claims 1 to 7, characterized in that the component ( 34 ) has a te formed by an air-impermeable film layer ( 45 ) and a grid or mesh, via an adhesive, laminating or calendering process are interconnected. 9. Sandwich component according to one or more of claims 1 to 8, characterized in that the component ( 34 ) has a ge through an air-impermeable film ( 16 ) formed layer ( 44 , 45 ) and a woven or knitted fabric, which via an adhesive , Lamination or calendering process are interconnected. 10. Sandwich component according to one or more of claims 1 to 9, characterized in that the component ( 34 ) is formed on the two opposite cover surfaces by a cover film consisting of plastic, which form the upper sides ( 25 , 26 ) of the component ( 34 ) . 11. Sandwich component according to one or more of claims 1 to 10, characterized in that the partial areas of the layer ( 2 ) arranged at different distances from a surface ( 13 , 14 ) of the support body ( 3 ) via spatially deformed transition areas ( 10 , 31 ) are connected. 12. Sandwich component according to one or more of claims 1 to 11, characterized in that the layer ( 2 ) or the component ( 34 ) forms a core of a sandwich component ( 1 ) which has lower mechanical strength values, in particular a higher modulus of elasticity than the supporting body forming the cover layers by ( 3 ). 13. Sandwich component according to one or more of claims 1 to 12, characterized in that the layer ( 2 ) and / or the position and / or the component ( 34 ) has a low gas permeability. 14. Sandwich component according to one or more of claims 1 to 13, characterized in that the component ( 34 ) is integrally formed. 15. Sandwich component according to one or more of claims 1 to 14, characterized in that the layer ( 44 , 45 ) is formed by a foil made of metal and / or ceramic and / or plastic. 16. Sandwich component according to one or more of claims 1 to 15, characterized in that the layer ( 44 , 45 ) is formed with openings, in particular grid-shaped. 17. Sandwich component according to one or more of claims 1 to 16, characterized in that the layer ( 44 ) is mesh or lattice-shaped and the mesh threads or bars are at least partially formed by plastic. 18. Sandwich component according to one or more of claims 1 to 17, characterized in that the layer ( 44 , 45 ) is spatially deformed. 19. Sandwich component according to one or more of claims 1 to 18, characterized in that the plastic ( 15 ) of the support body ( 3 ) is a thermoplastic elastomer. 20. Sandwich component according to one or more of claims 1 to 19, characterized in that the plastic of the support body ( 3 ) is an amorphous or partially crystalline thermoplastic. 21. Sandwich component according to one or more of claims 1 to 20, characterized in that between the cover layers ( 35 , 36 ) of the component ( 34 ), for example a print image ( 39 ) formed from a plurality of color layers ( 37 , 38 ) is arranged or is embedded in an intermediate layer ( 40 ). 22. Sandwich component according to one or more of claims 1 to 21, characterized in that a carrier layer ( 51 ) and / or a protective layer ( 52 ) with respect to a layer ( 44 ) and / or a layer ( 45 ) a higher elastic expansion coefficient has and the expansion coefficient from the position ( 44 ) in the direction of the surfaces ( 13 and 14 ) of the sandwich component ( 1 ) preferably increases exponentially.