WO2009043777A2 - Verfahren zur herstellung eines leichtblechs - Google Patents
Verfahren zur herstellung eines leichtblechs Download PDFInfo
- Publication number
- WO2009043777A2 WO2009043777A2 PCT/EP2008/062783 EP2008062783W WO2009043777A2 WO 2009043777 A2 WO2009043777 A2 WO 2009043777A2 EP 2008062783 W EP2008062783 W EP 2008062783W WO 2009043777 A2 WO2009043777 A2 WO 2009043777A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composite component
- foam layer
- polymer foam
- metal strip
- metal
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
- B32B5/20—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material foamed in situ
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/326—Joining the preformed parts, e.g. to make flat or profiled sandwich laminates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
- B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
- B32B37/203—One or more of the layers being plastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/24—Organic non-macromolecular coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
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- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0257—Polyamide
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- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/022—Foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/308—Heat stability
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/12—Pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/10—Trains
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12479—Porous [e.g., foamed, spongy, cracked, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12556—Organic component
- Y10T428/12569—Synthetic resin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249987—With nonvoid component of specified composition
- Y10T428/24999—Inorganic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
Definitions
- the invention relates to a composite component comprising at least a first and a second metal sheet having at least one layer of a polymer disposed between the first and second metal sheets and a method for producing a corresponding composite component and its use.
- German Offenlegungsschrift 10 2004 022 677 A1 discloses composite components which consist of a sandwich structure of two outer metal sheets and one inner polymer layer, wherein the polymer layer is formed as a foam.
- an adhesive or primer must be carefully applied.
- a double conveyor belt which limits the thickness of the reactive foam layer and is intended to support the reactive foaming process by means of heatable sections.
- EP 1 504 892 A1 it is known from published European patent application EP 1 504 892 A1 to provide a polymer layer consisting of a polyamide or a polyamide-polyethylene blend between two metal sheets.
- this composite component can be improved in terms of its weight.
- the object of the present invention is to propose a composite component which is optimized with regard to its weight, which at the same time is easy to produce.
- the polymer layer comprises at least one polymer foam layer of a thermoplastic polymer, wherein the polymer foam layer gas bubbles with a volume fraction of 1% to 80%, in particular 5% to 70 % having.
- a polymer foam layer can contribute significantly to the weight reduction of a composite component with the same strength and rigidity.
- the weight of the composite components and the consumption of polymers during the production of the foam layer can be reduced by appropriate volume-wise substitution, whereby the costs for production can be reduced.
- thermoplastic polymers on the use of a Adhesive can be omitted as a bonding agent, since a connection to the metal component can be achieved by heating and cooling of the thermoplastic polymer.
- the polymer foam layer consists of a temperature-resistant, thermoplastic polymer.
- Temperature-resistant thermoplastic polymers in the context of the present invention are, for example, polymers which when heated to 210 0 C for a short time and when heated to 190 0 C for at least 20 min. show no loss of shape.
- the composite component is thus suitable to survive in particular subsequent painting steps with subsequent curing of the paint layer without damage.
- polymer foam layer contains a polyamide or a polyamide blend
- the material costs for the polymer foam layer can be kept low.
- polyamide and a corresponding polyamide blend is temperature resistant.
- a preferred polymer blend is, for example, a polyamide-polyethylene blend, in particular a PA6-polyamide with a proportion of grafted-on polyethylenes and a reactive copolymer.
- the layer thickness of the polymer layer is between 50 ⁇ m and 5000 ⁇ m, preferably between 200 ⁇ m and 1000 ⁇ m.
- the required strength and rigidity of the composite are given for the layer thicknesses mentioned.
- a sufficient weight reduction compared to the solid material is achieved.
- the thickness of the metal sheets used is between 0.15 and 3.0 mm.
- a metal sheet thickness of 0.2 to 0.5 mm, in particular from 0.2 to 0.4 mm, used, since in this area optimal deformation properties, for example, with regard to the use as an outer skin part of a motor vehicle body of the composite component according to the invention are given.
- the sheet thicknesses for the first and second metal sheets may be different.
- the metal sheets may consist of alloys of steel, including stainless steel, aluminum, magnesium and / or titanium.
- Other metals which can be processed into sheets can also be used in the composite component according to the invention.
- a combination of different metal alloys or metals can be used.
- At least one metal sheet is coated on one or both sides.
- the coatings may be metallic or organic, for example.
- a variety of methods for applying the metallic coatings are available, for example electrolytic application, Hot dipping, roll cladding or physical vapor deposition or chemical vapor deposition.
- a metal sheet has been pretreated with a primer or another pretreatment.
- the adhesive By means of the adhesive, the adhesive properties of the polymer foam layer are improved.
- the coatings can be applied for this purpose, for example, in a coil coating process on the metal sheet. Of course, other application methods are also available for applying organic coatings.
- the composite adhesion-improving coating of the composite component is usually applied at the interface with the polymer foam layer. Other functions, such as decorative purposes, anti-corrosion purposes or even an oil-free deformation of the composite component ensuring coatings are also possible.
- a temporary corrosion protection can be achieved for example by oiling the metal sheets. However, the oil is usually thoroughly removed before the composite component is manufactured.
- the composite component according to the invention can be used directly in motor vehicle construction, if this has been converted after its production in a downstream forming process to a preform or the final shape.
- the above-indicated object for a method according to the invention for producing a composite component is achieved in that a first metal strip from a first coil and a second metal strip is unwound from a second coil,
- thermoplastic polymer foam layer is applied to at least one metal strip
- the formation of the polymer foam layer takes place by physically introducing gas bubbles into the polymer melt so that the polymer foam layer has a volume fraction of gas bubbles of from 1% to 80%, preferably from 5% to 70%;
- thermoplastic polymer foam layer the first metal strip, the thermoplastic polymer foam layer and the second metal strip are joined together by the action of temperature and Druckausuben and
- the produced band-shaped composite component is wound on a coil or cut into sheet-like composite components.
- thermoplastic polymer foam layer with a volume fraction of gas bubbles of 1% to 80%, preferably 5% to 70% leads to a significant reduction in the weight of a composite component consisting of two metal sheets and an intermediate polymer layer and at the same time an adhesive as a primer no longer needs to be used. This significantly simplifies the production of the composite component and leads to lighter composite components.
- the formation of the polymer foam layer further by physical Introducing gas bubbles with a volume fraction of 1% to 80%, in particular 5% to 70%, in the polymer melt can be directly influenced on the density of the polymer foam produced.
- the gas used during foaming can be, for example, air, carbon dioxide, nitrogen or any other gas or, if appropriate, also a combination of gases.
- the process for producing the composite component according to the invention is simplified in that, according to a next embodiment, the polymer foam layer is applied as a pre-extruded film to the first metal strip or the polymer foam layer is extruded directly onto the first metal strip.
- the pre-extruded film can easily be provided by another coil in the band-shaped processing of the metal strip and be connected to the metal strips by pressurizing and heating accordingly.
- a further simplification of the method is achieved by extruding the polymer foam layer directly onto the first metal strip, taking advantage of the fact that, when extruded, the polymer foam layer is directly in a state of adhesion.
- the first metal strip is heated prior to application of the polymer foam layer and / or the second metal strip prior to application to the polymer foam layer.
- the heating causes the thermoplastic polymer foam layer at the boundary to the metal in soft Condition remains and thus causes good adhesion to the metal sheet. Due to the insulating effect of the gas bubbles, the temperatures can be kept lower and a wide temperature window for the connection process can be made possible.
- Polymer foam layer thicknesses are achieved, so that the composite components produced therewith are very well usable as outer skin parts with the highest surface properties.
- the double belt press has at least one heating zone and one Abkuhlzone and optionally a pressure zone.
- the heating zone and the cooling zone ensure a controlled connection process in the area of the double press.
- the heating zone and the Abkuhlzone is preferably each a separate endless belt for guiding the band-shaped Composite component provided to further improve the Temperaturbowung.
- the optionally provided pressure zone can be used for calibration and realized for example by a pair of rollers. By means of a pair of rollers, it is possible to adjust very precisely larger pressures in order to achieve improved uniformity of the thickness of the band-shaped composite component. As a result, the band-shaped composite component also has an improved surface.
- the second metal strip is heated prior to bonding with the polymer foam layer and the first metal strip, so that in the subsequent pressurization no complete heating of the second metal strip must take place.
- At least one polar gas or a gas at least one polar t contained forming gas mixture is used for foaming.
- laminating belts of the double belt press are used whose outer surface resting on the band-shaped composite component is coated and optional surfaces are machined, the outer surfaces of the band-shaped composite component can be protected against negative production influences and production errors.
- silicone coated and ground Kaschierbandern very good Results with regard to the surface quality of the band-shaped composite component can be achieved.
- the method according to the invention can be configured further advantageously in that the band-shaped composite component is formed before and / or after separation into sheet-like composite components. This results in a particularly economical production method of the composite component according to the invention.
- the composite component according to the invention is advantageously used in the automotive, aircraft, marine, submarine, rail, aerospace or construction industries. Benefits arise namely by the composite component according to the invention everywhere where force lightweight construction concepts to reduce weight.
- FIG. 1 is a schematic sectional view of a first embodiment of a composite component according to the invention
- Fig. 2 is a schematic representation of a
- Fig. 3 is a schematic representation of a
- the composite component 1 shown in FIG. 1 consists of a first metal sheet 2, a second metal sheet 3 and a polymer foam layer 4 arranged between the two metal sheets.
- the polymer foam layer 4 comprises, according to the present exemplary embodiment of the composite component 1 according to the invention, a temperature-resistant polymer foam comprising a polyamide-polyethylene blend Air bubbles with a volume fraction of 40%.
- a device for producing an exemplary embodiment of a erfmdungsge speciallyen composite component 1 is now shown schematically, via a first coil b is a first metal strip 6 at your disposal placed, which is preheated in a heating section 7.
- the metal strip 6 may consist of a very wide variety of metals or alloys, for example steel, aluminum, titanium, etc.
- the metal strip preferably has a thickness of 0.15 to 0.8 mm, in order to be particularly suitable for use as a shell in body construction , When using other metals to make the composite component, other thicknesses of the metal sheets may also be used.
- the polymer foam layer is extruded by an extruder 8 directly on the first metal strip 6, wherein the extruder 8 is constructed, for example, of three units.
- the first unit 9 melts the polymer granules
- the second unit 10 preferably physically introduces gas bubbles, for example air bubbles for forming the polymer foam into the polymer melt.
- the polymer melt mixed with gas bubbles is extruded onto the metal strip 6 via an extrusion nozzle 11, where it forms a polymer foam layer 4.
- the second metal strip 12 is provided by unwinding from a coil 13 and heated in a heating section 14 prior to contact with the polymer foam layer 4.
- the heating section 14 is like the heating section 7 adapted to the metal to be heated.
- an inductive heating of the metal strip is suitable.
- other methods of heating the metal strip can also be used.
- the contact between the second metal strip 12 and the polymer foam layer 4 is preferably realized only within the double belt press 15, so that by selective heating, m a segmented heating zone 15a at temperatures between 210 and 270 0 C, the air-blended polymer foam layer 4 between the metal strips. 6 , 12 is connected.
- the double belt press can apply an overpressure of up to 30 bar. The built-up pressure is sufficient for a Vergii eichorgist the heat transfer and for a good melting of the polymer foam layer 4.
- a high line pressure of up to 20 bar can act on the band-shaped composite component 1 in a pressure zone 15b, for example by means of unillustrated pressure rollers, whereby the adhesion between metal sheet 6, 11 and polymer foam layer can be improved.
- the band-shaped composite component 1 is then cooled in a third stage, defined in a segmented cooling zone 15b, in order to calibrate the total composite thickness.
- an additional Kuhlemheit 16 may be arranged on the outlet side of the two-stage double belt press, in order to lower the temperature on the band-shaped composite component 1, for example by spraying on can.
- FIG. 3 shows a schematic view of a device for carrying out a second exemplary embodiment of the method according to the invention, in which a first metal strip 6 and via a heating roller 17 a is heated.
- the temperature of the heating roller 17 may for example be 240 0 C.
- the extruder 18 extrudes directly onto the first metal strip 6 a
- Polymer foam layer 4 wherein in the interior of the extruder gas is introduced under pressure physically under pressure in the plastic melt, which expands during the pressure relief at the outlet of the extruder 18 and forms fine gas bubbles.
- the volume fraction of gas bubbles may be 1 to 80%, preferably 5 to 70%. With 40% gas bubble volume also very good results were achieved. Alternatively, the volume fraction of gas bubbles may be 1 to 80%, preferably 5 to 70%. With 40% gas bubble volume also very good results were achieved. Alternatively, the volume fraction of gas bubbles may be 1 to 80%, preferably 5 to 70%. With 40% gas bubble volume also very good results were achieved. Alternatively, the volume fraction of gas bubbles may be 1 to 80%, preferably 5 to 70%. With 40% gas bubble volume also very good results were achieved. Alternatively, the volume fraction of gas bubbles may be 1 to 80%, preferably 5 to 70%. With 40% gas bubble volume also very good results were achieved. Alternatively, the volume fraction of gas bubbles may be 1 to 80%, preferably 5 to 70%. With 40% gas bubble volume also
- Polymer foam layer but also supplied as a film 4 'via a coil 18a, which is indicated in Figure 3.
- a high process reliability in gas bubble formation was obtained when using a polyamide-polyethylene blend in conjunction with a mixture of a polar gas, for example oxygen and a non-polar gas, for example nitrogen. Good results have therefore also been achieved with the use of air for blistering.
- a polar gas for example oxygen and a non-polar gas, for example nitrogen.
- a marginal strip regranulation is carried out using a device 19 which removes excess residues of the polymer foam layer, processes them further and, for example, recycles them into the production process.
- the second metal strip 12 is then unwound via a coil 13 and applied to the polymer foam layer 4 via a heating roller 17b. Due to the high temperature of the second metal strip, a connection can be made by melting the polymer foam layer 4 between the second metal strip and the polymer foam layer 4. For this purpose, the first metal strip 6 with the polymer foam layer 4 arranged thereon and the second metal strip 12 are fed to the double-belt press 20.
- the double belt press 20 has three areas, a heating zone 21, a pressure zone 22 and a cooling zone 23, the cooling zone 23 and the heating zone 21 each having separate laminating bands 24a, 24b, 24c, 24d.
- the Kaschierb are surface-coated and processed surfaces.
- a temperature of about 230 0 C is set in the present embodiment at a low pressure of about 0.2 to 0.5 bar via a tempering medium flowing through the plates 25a and 25c.
- the tempering medium may also have higher temperatures, for example 260 0 C.
- Laminating rollers 22a and 22b which form the pressure zone 22 in the present embodiment, exert a pressure on the band-shaped composite component 1 after passing through the heating zone 21, which may be in the range of approximately 12 bar, for example. Unevenness, for example, in the thickness of the band-shaped composite component are thereby equalized. It is also conceivable that higher pressures through the Laminating rollers are exerted on the composite component. For example, the pressure can be up to 50 or 100 kN.
- the gap which is present in the heating zone 21 through the laminating belts 24a and 24c is wedge-shaped, so that the polymer foam layer 4 is compressed.
- the plates 25a and 25c and 25b and 25d are offset from each other by half a plate.
- the band-shaped composite component 1 is cooled to a temperature of less than 180 0 C. Furthermore, a pressure of about 0.2 to 0.5 bar is exerted on the composite component 1 via the plates 25b and 25d. Due to the low pressures, an edge seal, as has hitherto been customary when high pressures were used, is no longer necessary and thus simplifies the manufacturing process considerably.
- the plates 25b and 25d are flowed through by a cooling medium for this purpose.
- the plates can be flowed through by a cooling medium having a temperature of 20 0 C 25b and 25d in order to obtain a significant cooling of the composite component.
- the band-shaped composite component 1 passes through at least one cooling device 26. The cooling takes place by spraying water 26a and later squeezing rollers 26b to remove the water.
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2010003425A MX2010003425A (es) | 2007-09-26 | 2008-09-24 | Metodo para la produccion de hoja metalica ligera. |
US12/679,424 US8470111B2 (en) | 2007-09-26 | 2008-09-24 | Method for production of thin sheet metal |
EP08804687.5A EP2193021B1 (de) | 2007-09-26 | 2008-09-24 | Verfahren zur herstellung eines leichtblechs |
BRPI0817307A BRPI0817307B1 (pt) | 2007-09-26 | 2008-09-24 | processo para a fabricação de um componente compósito, componente compósito e uso do mesmo |
ES08804687.5T ES2475967T3 (es) | 2007-09-26 | 2008-09-24 | Procedimiento para la fabricación de una chapa ligera |
CA2700549A CA2700549C (en) | 2007-09-26 | 2008-09-24 | Method for the production of light sheet metal |
CN200880108836.6A CN101815612B (zh) | 2007-09-26 | 2008-09-24 | 制备轻质金属板的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007046226.5 | 2007-09-26 | ||
DE200710046226 DE102007046226A1 (de) | 2007-09-26 | 2007-09-26 | Verfahren zur Herstellung eines Leichtblechs |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009043777A2 true WO2009043777A2 (de) | 2009-04-09 |
WO2009043777A3 WO2009043777A3 (de) | 2009-05-22 |
Family
ID=40002932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/062783 WO2009043777A2 (de) | 2007-09-26 | 2008-09-24 | Verfahren zur herstellung eines leichtblechs |
Country Status (9)
Country | Link |
---|---|
US (1) | US8470111B2 (de) |
EP (1) | EP2193021B1 (de) |
CN (1) | CN101815612B (de) |
BR (1) | BRPI0817307B1 (de) |
CA (1) | CA2700549C (de) |
DE (1) | DE102007046226A1 (de) |
ES (1) | ES2475967T3 (de) |
MX (1) | MX2010003425A (de) |
WO (1) | WO2009043777A2 (de) |
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US9889634B2 (en) | 2008-08-18 | 2018-02-13 | Productive Research Llc | Formable light weight composites |
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US9005768B2 (en) | 2011-02-21 | 2015-04-14 | Productive Research | Composite materials including regions differing in properties and methods |
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DE102014007715A1 (de) | 2014-05-28 | 2015-12-03 | Chemetall Gmbh | Verfahren zur Herstellung einer Sandwichstruktur, die hiermit hergestellte Sandwichstruktur und ihre Verwendung |
US10457026B2 (en) | 2014-07-21 | 2019-10-29 | Thyssenkrupp Steel Europe Ag | Device and method for producing composite sheets using multiple lamination |
WO2016012182A1 (de) | 2014-07-21 | 2016-01-28 | Thyssenkrupp Steel Europe Ag | Vorrichtung und verfahren zur herstellung von verbundblechen durch mehrfachkaschierung |
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WO2017125261A1 (de) | 2016-01-20 | 2017-07-27 | Thyssenkrupp Steel Europe Ag | Verfahren und vorrichtung zum herstellen eines werkstoffverbundes sowie dessen verwendung |
DE102016200667A1 (de) | 2016-01-20 | 2017-07-20 | Thyssenkrupp Ag | Verfahren und Vorrichtung zum Herstellen eines Werkstoffverbundes sowie dessen Verwendung |
US11338552B2 (en) | 2019-02-15 | 2022-05-24 | Productive Research Llc | Composite materials, vehicle applications and methods thereof |
Also Published As
Publication number | Publication date |
---|---|
EP2193021B1 (de) | 2014-04-09 |
CN101815612B (zh) | 2014-12-10 |
DE102007046226A1 (de) | 2009-04-09 |
CA2700549C (en) | 2016-08-30 |
ES2475967T3 (es) | 2014-07-11 |
CA2700549A1 (en) | 2009-04-09 |
WO2009043777A3 (de) | 2009-05-22 |
MX2010003425A (es) | 2010-04-21 |
BRPI0817307A2 (pt) | 2015-03-17 |
CN101815612A (zh) | 2010-08-25 |
US8470111B2 (en) | 2013-06-25 |
EP2193021A2 (de) | 2010-06-09 |
US20100233505A1 (en) | 2010-09-16 |
BRPI0817307B1 (pt) | 2018-08-28 |
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