• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a motor vehicle component (1) comprising a core layer (3) which is connected to a first cover layer (2) and a second cover layer (4), wherein the core layer (3) has a plurality of cavities (6) which are provided by webs (7) are separated from each other, the first cover layer (2) with first end faces (8) and the second cover layer (4) with second end faces (10) of the webs (7) are connected, further wherein the core layer (3) made of a fiber material consists of a cellulosic material, and wherein the first cover layer (2) and / or the second cover layer (3) has holes (14). The first cover layer (2) and the second cover layer (4) also comprise or consist of a fibrous material of a cellulosic material.
    公开号:AT519010A4
    申请号:T50975/2016
    申请日:2016-10-24
    公开日:2018-03-15
    发明作者:
    申请人:Greiner Perfoam Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a motor vehicle component comprising a core layer which is connected to a first cover layer and a second cover layer, and optionally with at least one decorative layer which is connected to the second cover layer, wherein the core layer has a plurality of cavities which are separated from one another by webs in that the first cover layer is connected to first end faces and the second cover layer is connected to second end faces of the webs, wherein furthermore the core layer consists of a fiber material of a cellulose material, and wherein the first cover layer and / or the second cover layer has holes.
    Furthermore, the invention relates to a method for producing a motor vehicle component after a first cover layer in a mold cavity, thereon a core layer of a fiber material of a cellulose material having a plurality of cavities, which are separated by webs, on a second cover layer and on this a decorative layer are inserted and then the layers are joined together to form a sandwich component and application of elevated temperature and pressure, wherein the first cover layer and / or the second cover layer is provided with holes or be.
    Such automotive components are already known from the prior art. Thus, e.g. DE 10 2014 005 008 A1 discloses a method for producing a sandwich component for a motor vehicle after which a sandwich semifinished product is provided that comprises a honeycomb core with a multiplicity of honeycomb webs and two thermoplastic cover layers. In a heating tool, this is heated to a predetermined temperature and then formed in a Umformwerk- convincing. One of the two cover layers is provided with a predetermined number of passage openings. It is formed in this way a Helmholtz resonator, whereby the acoustic behavior of the vehicle component is improved.
    In contrast, the object of the invention in the reduction of the weight of a motor vehicle component.
    The object of the invention is achieved in that the first cover layer and the second cover layer likewise comprise or consist of a fiber material of a cellulose material in the case of the vehicle component mentioned at the outset.
    The object of the invention is also achieved with the method mentioned, according to which it is provided that for the first and the second cover layer also a fiber material made of a cellulose material is used.
    By using a cellulosic material for the two outer layers, a significant reduction in the weight of the vehicle component can be achieved in comparison to known motor vehicle components with a similar structure. The use of apertured cover layers makes it possible to manufacture the automotive component in a single processing step by a so-called hot process, since air can escape from the core layer via the holes. As the air is heated during this processing step, it consequently expands. The possibility of escape of the air, an unwanted deformation of the outer layers can be avoided, so that the outer layers can be made thinner. On the other hand, the holes also cause air to flow back into the core layer during cooling of the vehicle component, so that it can also be avoided that the vehicle component partially collapses. By using the hot process to manufacture the automotive component, the cover layers can be better bonded to the core layer. Although the cover layers are tensile layers which contribute to the self-bearing capacity of the vehicle component, surprisingly no or only a slight impairment of the mechanical properties of the vehicle component was determined by the holes, which ultimately represent predetermined breaking points in the tensile strength trained cover layers.
    According to an embodiment variant, it can be provided that the holes are or are arranged in the form of a hole pattern, wherein according to a further embodiment variant it can be provided that at least one hole of the first cover layer and / or the second cover layer is assigned to each cavity of the core layer . becomes. It can thus be improved the above-mentioned effects. In particular, it is also possible to reduce the size of the holes.
    The holes are preferably arranged in the form of a quadrangular, a triangular or a hexagonal pattern, and / or the holes are circular or quadrangular or triangular or hexagonal, and / or the holes have a diameter between 0.2 mm and 3 mm , In particular with at least one of these variants of the motor vehicle component, the abovementioned effects could be improved without the tensile strength of the outer layers being excessively reduced,
    In order to improve the adhesive strength of the cover layers on the core layer and / or the decorative layer on the second cover layer and to simplify the manufacture of the motor vehicle component, it can be provided that the first cover layer and / or the second cover layer have a coating on one or both sides from a thermoplastic material or have or at least one of the outer layers is provided with this coating. The holes in the cover layer or in the cover layers can also have a supporting effect for improving the adhesive strength of the sandwich composite, namely by allowing these holes to be partially filled with the thermoplastic material and thus to produce a type of claw effect. By this latter embodiment also the unwanted side effect of the holes can be reduced as predetermined breaking points.
    To improve the impact resistance of the motor vehicle component, provision may be made for a layer of a thermoplastic material to be disposed between the second cover layer and the decorative layer, which layer has a layer thickness between 20 pm and 600 pm and which may be fiber-reinforced. Although this layer is made relatively thin, thereby reducing the weight of the
    In the course of testing, it has been found in tests that the impact resistance of the vehicle component can nevertheless be significantly increased.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each shows in a simplified, schematic representation:
    Figure 1 shows a detail of a vehicle component cut in side view.
    2 shows a detail of a motor vehicle component in plan view;
    3 shows a first embodiment variant of a hole arrangement in a cover layer in plan view;
    4 shows a second embodiment of a hole arrangement in a cover layer in plan view;
    Fig. 5 shows a third embodiment of a hole arrangement in a cover layer in plan view.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and to transmit mutatis mutandis to the new situation in a change in position. All standards cited in this description refer to the version valid at the filing date of this patent application.
    In Fig. 1 a section of a motor vehicle component 1 is shown. The motor vehicle component 1 is in particular a motor vehicle interior trim part, for example a roof lining, a loading floor, a hat rack, a side trim, etc.
    The motor vehicle component comprises a first cover layer 2, a core layer 2, a second cover layer 3 and a decorative layer 4.
    The core layer 3 consists of a fiber material of a cellulosic material, in particular of paper or cardboard. It has a plurality of cavities 6, which are separated from one another by webs 7. The webs 7 are arranged such that first end faces 8 of the webs 7 in the direction of the first cover layer 2 and in the direction of a height 9 of the webs 7 the first end faces 8 opposite second end faces 10 of the webs 7 in the direction of the second cover layer 4. The first end faces 8 are connected to the first cover layer 2 and the second end faces 10 are connected to the second cover layer 4.
    In particular, the core view 3 is a so-called honeycomb panel or a plate in which the webs are arranged in the form of a standing wave.
    The first cover layer 2 and the second cover layer 4 are connected directly to the core layer 3. They also consist of a fiber material of a cellulose material, in particular of paper or cardboard, more preferably of a single or multi-ply paper. Preferably, the paper has a basis weight between 100 g / m2 and 200 g / m2 according to DIN EN ISO 536. It is further preferred if the paper has an elongation of up to 15%, in particular between 1% and 15%, preferably between 5% and 15%, in accordance with ISO 527/3.
    The connection of the first and the second cover layer 2, 4 with the webs 7 of the core layer 3 takes place cohesively. For this purpose, a commercially available adhesive can be used, which can be used in the method described below, in particular at the indicated temperatures. The adhesive may for example be applied to the first and second end surfaces 8, 10.
    According to a variant embodiment of the motor vehicle component 1 or of the method for its production, it may be provided that a cellulosic material is used for the first cover layer 2 and / or for the second cover layer 3, which is coated on one or both sides with a thermoplastic material , in particular is coated over the entire surface. As thermoplastic material, a thermoplastic having a melting point of less than 230 ° C, for example polyethylene or polypropylene, can be used. But it is also possible to use a thermosetting plastic, for example based on an alkyd resin, a phenolic resin, an unsaturated polyester resin, an epoxy resin. The plastic coating may each have a basis weight between 40 g / m2 and 100 g / m2, in particular between 40 g / m2 and 80 g / m2.
    In the case of a one-sided coating of the first and / or second cover layer 2, 4, the surface of the first and / or second cover layer 2, 4 facing the first or second webs 7 is preferably coated. In the case of a two-sided coating, the surface of the first and / or second cover layer 2, 4 lying opposite this surface can also be coated, that is, for example, that surface of the second cover layer facing the decorative layer 5 is coated with the thermoplastic material.
    It should be mentioned at this point that a further layer 11 is also arranged on the surface of the first cover layer 2 facing away from the webs 7 of the core layer 3 (as shown by dashed lines in FIG. 1), for example also a decorative layer.
    According to a further embodiment variant of the motor vehicle component 1 or of the method, it can be provided that the material-locking connection of the first and / or second cover layer 2, 4 with the core layer 3 also takes place via side walls 12 of the webs. In this case, for example, more adhesive or thermoplastic or thermosetting plastic may be used or the thermal treatment of the automotive component 1, i. the sandwich component, over a longer period and / or at a higher temperature and / or a higher pressure during the connection of the individual layers are applied. It can thus be achieved that a part of the adhesive or the thermoplastic or thermosetting plastic reaches into the flea spaces 6 of the core layer and rests against the side walls 12 of the webs and thus an additional Liehe connection area 13 (in Fig. 1 by dashed lines using a Cavity 6 shown) of the first and / or the second cover layer 2, 4 with the core layer 3 produces.
    The decorative layer 5 and / or the optional additional layer 11 may, for example, be a nonwoven, e.g. a polyester fleece, a carpet, a plastic layer, for example with an embossed or textured surface, etc.
    Essentially, the appearance and the material for the decorative layer 5 and / or the optionally present further layer 11 depends on the desired appearance of the motor vehicle component 1, i. according to the customer's request, this forms the view page of the vehicle component 1. Such decorative layers 5 are known from the relevant prior art, so reference is made to this.
    The decorative layer 5 and the optionally present further layer 11 can also be materially bonded to the second or the first cover layer 4, 2, for example also via an adhesive or the above-mentioned thermoplastic or thermosetting plastic coated as a coating on the respective surface of the first or the second cover layer 2, 4 or on the surface of the decorative layer 5 and the further layer 11, which faces the respective cover layer 2, 4, is applied. But it is also possible, between the decorative layer 5 and the second cover layer 4 and / or between the further layer 11 and the first cover layer 2, an additional layer of a thermoplastic material, in particular a thermoplastic having a melting point of less than 230 ° C, for example polyethylene or polypropylene. This thermoplastic may optionally be fiber-reinforced, in particular with glass fibers. In this case, it is preferable to use a PP / glass fiber layer having a basis weight of between 100 g / m 2 to 700 g / m 2, more preferably between 200 g / m 2 to 300 g / m 2. This additional layer, ie in particular the PP / glass fiber layer, preferably has a layer thickness between 20 pm and 600 pm, in particular between 100 pm and 300 pm.
    As can be seen from Fig. 1, the decorative layer 5 facing the second cover layer 4 is provided with a plurality of holes 14. Alternatively or additionally, however, it is also possible that the first cover layer 2 is provided with a plurality of holes 14, as indicated by dashed lines in FIG. 1. Preferably, at least that cover layer 2 or 4 is provided with the holes 14, which is arranged in the shaping device for producing the motor vehicle component 1 above the core layer 3.
    In principle, it is possible to associate such holes in at least one of the two cover layers 2, 4 only to individual cavities 6 of the core layer 3. Preferably, however, the number of holes 14 corresponds at least to the number of cavities 6 and the position of the holes 14 is selected such that each cavity 6 is assigned at least one hole 14 in at least one of the cover layers 2, 4.
    It is possible for exactly the same number of holes 14 to be formed in the first cover layer 2 as in the second cover layer 4. The holes 14 of the first cover layer 2 may be formed exactly opposite the holes 14 in the second cover layer 4. so that the holes 14 in the two cover layers 2, 4 viewed in plan view are arranged congruently. However, it is also possible a lateral offset of the holes 14 in the first cover layer 2 to the holes 14 in the second cover layer 4, again viewed in plan view. It can be provided that the cavities 6 are alternately assigned holes 14 in the first cover layer 2 and holes 14 in the second cover layer 4. Each cover layer 2, 4 may have only a number of holes 14, which corresponds to half the total number of cavities 6. But it is also a different division of the holes on the first cover layer 2 and the second cover layer 4 possible. For example, the first cover layer 2 may have a number of holes 14 corresponding to one third of the total number of cavities 6 of the core layer 3, and the second cover layer 4 may have a number of holes 14 equal to two-thirds of the total number of cavities 6 of the core layer 3 , Other divisions are also possible, but should not be discussed further, as they follow the above teaching and are therefore easy to find.
    As already mentioned, each cavity 6 of the core layer 3 is assigned at least one hole 14 in at least one of the two cover layers 2, 4. Thus, more than one hole 14 per cavity 6, e.g. two, three, four, etc. holes 14, per cavity 6 may be present. It is also possible that only a few of the cavities 6 more than a hole 14 in one of the two cover layers 2, 4 is assigned, or the number of holes 14 in at least one of the two cover layers 2, 4 generally vary per cavity.
    The holes 14 may have a dimension selected from a range of 0.2 mm to 3 mm, in particular from a range of 0.2 mm to 1 mm. This dimension refers to the diameter for circular holes 14 (viewed in plan view). But it is also possible that the holes 14 have a geometry deviating from the circular geometry, in particular quadrangular or triangular or hexagonal (each viewed in plan view). In this case, this dimension refers to the diameter of the enveloping circle that just encloses the respective geometric shape of the holes 14.
    Preferably, the holes 14 in the first cover layer 2 and / or in the second cover layer 4 occupy an area in plan view of the motor vehicle component 1 which corresponds to between 15% and 40%, in particular between 15% and 30%, of the total area. which is occupied by the vehicle component 1, again viewed in plan view. If holes 14 are present in both the first and second cover layers 2, 4, these indications preferably relate to each of the two cover layers 2, 4.
    Through the holes 14, the cavities 6, in particular all cavities 6, connected to the environment, so that the cavities 6 are not completely closed. The holes 14 thus extend continuously through the first and / or the second cover layer 2, 4.
    FIGS. 2 to 5 show various embodiments of hole patterns in at least one of the cover layers 4.
    In principle, the holes 14 can be arranged distributed completely irregularly in the first and / or the second cover layer 2, 4. In the preferred embodiment, however, the holes 14 are arranged in the form of a hole pattern, as can be seen from Figs. 2 to 5, which show a section of embodiment variants of the vehicle component 1, wherein in Figs. 3 to 5 only in each case the cover layer 2 is shown. For better depiction, the decorative layer 5 is not shown in FIG. 2, so that therefore also this figure shows the plan view directly on the second cover layer 4. Indicated by dashed lines are the webs 7 of the core layer 3.
    The core layer 3 consists in this embodiment of the motor vehicle component 1 of a honeycomb panel with hexagonal honeycomb. The holes 14 in the second cover layer 4 are located in the centers of the hexagons, so that they are arranged in the form of a diamond pattern. The same may also apply to any existing holes 14 in the first cover layer 2, which is not apparent in Fig. 2.
    However, other hole patterns may also be used, for example, a square array (FIG. 3), a rectangular array, a hexagonal array (FIG. 4), a triangular array (FIG. 5), etc. The dashed lines in FIGS. 3 to 5 merely serve to illustrate the hole pattern.
    From FIGS. 3 and 4 it can be seen that the holes 14 can also have a geometry deviating from the circular geometry, for example hexagonal (FIG. 3), triangular (FIG. 4) or quadrangular (not illustrated), for example square or rectangular or diamond shaped, can be.
    A distance between the holes 14, each measured intermediate points between the hole can be between 2 mm and 20 mm, in particular between 5 mm and 10 mm.
    The Fierstellung of the vehicle component 1 takes place in a molding press, as is known per se, after a so-called hot process. For this purpose, the first cover layer 2, then the core layer 3, then the second cover layer 4 and on this the decorative layer 5 are inserted into a mold cavity of the molding press in the order given. Thereafter, the layers are bonded together to form a sandwich component and application of elevated temperature and pressure. The temperature can be selected from a range of 30 ° C to 250 ° C. If cover layers 2 are processed with a thermoplastic component, shaping is preferably carried out by cold pressing. When processing cover layers with a duroplastic fraction, the shaping is preferably carried out in a temperature range from 170 ° C. to 250 ° C. The pressure can be between 20 t / m2 and 200 t / m2. Shaping can be done between 30 seconds and 240 seconds. Optionally, this layer arrangement can also be partially deformed during the shaping, for example, be pressed more strongly in discrete areas than in other areas, so as to form the motor vehicle component with different layer thicknesses. For example, an edge region of the vehicle component 1 can be pressed more strongly over its entire circumference.
    If further layers are to be processed, that is, for example, a further decorative layer on the first cover layer 2 or the layer of the optionally fiber-reinforced plastic, then these layers are inserted into the open mold cavity at the corresponding locations in the layer composite of the sandwich component.
    The holes 14 in the first cover layer 2 and / or the second cover layer 4 are previously prepared the composite formation, for example by punching, with needle rollers, etc. It can be ensured that the holes 14 during the manufacture of the motor vehicle component 1 in the molding press are open, so that due to the temperature expanding air in the cavities 6 of the core layer 3 can escape from these.
    Within the scope of the invention, it is also possible for the first cover layer 2 and / or the second cover layer 3 to be multi-layered with the sequence thermoplastic, in particular PE or PP, (paper, thermoplastic, in particular PE or PP), paper, thermoplastic, in particular PE or PP. For example, n can have a value between 1 and 10.
    The exemplary embodiments show or describe possible embodiments of the motor vehicle component 1, wherein it should be noted at this point that various combinations of the individual design variants are also possible with one another.
    For the sake of order, it should finally be pointed out that, for better understanding of the structure of the vehicle component 1, this is not necessarily drawn to scale.
    REFERENCE SIGNS LIST 1 Vehicle component 2 cover layer 3 core layer 4 cover layer 5 decorative layer 6 cavity 7 web 8 end face 9 height 10 end face 11 layer 12 side wall 13 connection area 14 hole
    权利要求:
    Claims (16)
    [1]
    claims
    1. motor vehicle component (1) comprising a core layer (3) which is connected to a first cover layer (2) and a second cover layer (4), and optionally with at least one decorative layer (5) which is connected to the second cover layer (4) wherein the core layer (3) has a plurality of cavities (6) which are separated from one another by webs (7), the first cover layer (2) with first end faces (8) and the second cover layer (4) with second end faces (10 ) of the webs (7), wherein furthermore the core layer (3) consists of a fiber material of a cellulose material, and wherein the first cover layer (2) and / or the second cover layer (3) has holes (14), characterized the first cover layer (2) and the second cover layer (4) also comprise or consist of a fiber material of a cellulose material.
    [2]
    2. Motor vehicle component (1) according to claim 1, characterized in that the holes (14) are arranged in the form of a hole pattern.
    [3]
    3. Vehicle component (1) according to claim 1 or 2, characterized in that each cavity (6) of the core layer (3) is associated with at least one hole of the first cover layer (2) and / or the second cover layer (4).
    [4]
    4. motor vehicle component (1) according to one of claims 1 to 3, characterized in that the holes (14) in the form of a quadrangular, a triangular or a hexagon pattern are arranged.
    [5]
    5. motor vehicle component (1) according to one of claims 1 to 4, characterized in that the holes (14) are circular or square or triangular or hexagonal.
    [6]
    6. motor vehicle component (1) according to one of claims 1 to 5, characterized in that the holes (14) have a diameter between 0.2 mm and 3 mm.
    [7]
    7. motor vehicle component (1) according to one of claims 1 to 6, characterized in that the first cover layer (2) and / or the second cover layer (4) each have one or both sides a coating of a thermoplastic material.
    [8]
    8. Motor vehicle component (1) according to one of claims 1 to 7, characterized in that between the first cover layer (2) and the decorative layer (5) a layer of a thermoplastic material is arranged, which has a layer thickness between 20 pm and 600 pm , and optionally fiber reinforced.
    [9]
    9. A method for producing a motor vehicle component (1) after in a mold cavity a first cover layer (2), thereon a core layer (3) made of a fiber material of a cellulosic material having a plurality of cavities (6) by webs (7) from each other are separated, on a second cover layer (4) and on this a decorative layer (5) are inserted and then the layers are joined together to form a sandwich component and application of elevated temperature and pressure, wherein the first cover layer (2) and / or the second covering layer (3) is or are provided with holes, characterized in that a fibrous material of a cellulose material is also used for the first and the second covering layer (2, 4).
    [10]
    10. The method according to claim 9, characterized in that the holes (14) are arranged in the form of a hole pattern.
    [11]
    11. The method according to claim 9 or 10, characterized in that in the first cover layer (2) and / or in the second cover layer (3) generates a Lochter- ter, each cavity (6) of the core layer (3) at least one hole (14).
    [12]
    12. The method according to any one of claims 9 to 11, characterized in that the holes (14) are arranged in the form of a quadrangular, a triangular or a hexagon pattern.
    [13]
    13. The method according to any one of claims 9 to 12, characterized in that the holes (14) are formed circular or square or triangular or hexagonal.
    [14]
    14. The method according to any one of claims 9 to 11, characterized in that the holes (14) are formed with a diameter between 0.2 mm and 3 mm.
    [15]
    15. The method according to any one of claims 9 to 14, characterized in that the first cover layer (2) and / or the second cover layer (4) before being introduced into the mold cavity in each case one or both sides of a coating are coated with a thermoplastic material.
    [16]
    16. The method according to any one of claims 9 to 15, characterized in that between the second cover layer (4) and the decorative layer (5) a layer of a thermoplastic material is arranged, which has a layer thickness between 20 pm and 600 pm, and the optionally fiber-reinforced.
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    同族专利:
    公开号 | 公开日
    AT519010B1|2018-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102010005456A1|2010-01-22|2011-07-28|Daimler AG, 70327|Sandwich component and method for its production|
    EP2525962B1|2010-01-22|2015-04-15|Daimler AG|Sandwich component and method for the production thereof|
    DE102014005008A1|2014-04-05|2015-10-08|Daimler Ag|Method for producing a sandwich component, sandwich component and perforation device|
    DE102014206798A1|2014-04-08|2015-10-08|Bayerische Motoren Werke Aktiengesellschaft|Interior trim element for the interior of a motor vehicle|
    DE102018128353A1|2018-11-13|2020-05-14|Johann Borgers GmbH|Support structure of a backrest of a vehicle seat of a motor vehicle and method for its production|
    DE202018006152U1|2018-11-13|2019-05-27|Johann Borgers GmbH|Support structure of a backrest of a vehicle seat of a motor vehicle|
    法律状态:
    2018-11-15| HA| Change or addition of new inventor|Inventor name: DANIEL PERRAULT, AT Effective date: 20180926 Inventor name: MARKUS DRAXLER, AT Effective date: 20180926 Inventor name: GUENTHER KOLLER, AT Effective date: 20180926 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50975/2016A|AT519010B1|2016-10-24|2016-10-24|Motor vehicle component|ATA50975/2016A| AT519010B1|2016-10-24|2016-10-24|Motor vehicle component|
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