WO2010000483A1 - Hitze-aktivierbare klebemassen zur steigerung der verbundfestigkeit zwischen kunststoff und metallen in spritzgussbauteilen - Google Patents
Hitze-aktivierbare klebemassen zur steigerung der verbundfestigkeit zwischen kunststoff und metallen in spritzgussbauteilen Download PDFInfo
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- WO2010000483A1 WO2010000483A1 PCT/EP2009/004819 EP2009004819W WO2010000483A1 WO 2010000483 A1 WO2010000483 A1 WO 2010000483A1 EP 2009004819 W EP2009004819 W EP 2009004819W WO 2010000483 A1 WO2010000483 A1 WO 2010000483A1
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- plastic
- metal
- adhesion promoter
- heat
- rubbers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J121/00—Adhesives based on unspecified rubbers
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
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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
- B32B15/06—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 natural rubber or synthetic rubber
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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
- B32B15/08—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 synthetic resin
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
- C08J5/121—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives by heating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J107/00—Adhesives based on natural rubber
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/02—Aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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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
- B32B2307/51—Elastic
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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
- B32B2307/558—Impact strength, toughness
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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
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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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
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- Y10T428/31678—Of metal
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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
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- Y10T428/31707—Next to natural rubber
Definitions
- Heat-activatable adhesives for increasing the bond strength between plastic and metals in injection-molded components
- the adhesion promoter used is a heat-activable adhesive.
- the method provides that the heat-activatable adhesive is first applied to the metal, then the plastic is sprayed on, so that the crosslinking reaction of the heat-activable adhesive is initiated by this process and thus very high bonding strengths between plastic and metal can be realized ,
- plastic moldings are generally produced from molding compositions.
- powdered or granular injection molding materials are plasticized by an injection molding machine and injected at high pressure into the forming cavity of the injection mold.
- Typical injection molding machines consist of an injection unit, which comprises a heated cylinder, piston or worm flask and reservoir and drive units, which doses the molding compound, plasticized and injected into the closed tool.
- the injection molding machine comprises a closing unit which closes and opens the tool.
- Another advantage of the injection molding process is the ability to combine multiple components in a single operation, with the same as well as different materials be connected to each other.
- the insert technique refers to the embedding of metal parts in molded parts.
- the additional parts such as threaded bushes are inserted into the tool and then encapsulated with the plastic molding compound.
- Be directly overmoulded e.g. Inserts such as ball bearings, sheet metal or electrical components.
- the plastic content outweighs the weight and volume of the metal.
- the outsert technique relies on a usually metallic carrier board inserted in the tool, which has to meet high demands on dimensional stability, rigidity and strength.
- a carrier board inserted in the tool, which has to meet high demands on dimensional stability, rigidity and strength.
- different functional and connecting elements made of plastic, such as bearings, slides, snap connections, stops and screwed can be molded positively.
- Injection-molded plastic-metal hybrids synergistically use the properties of the participating composite partners, which enables a rational production of multifunctional lightweight structures.
- the combination of the advantages of each material group is the goal in the application of this technique.
- thin-walled sheet-metal profiles are stiffened by the application of suitable plastic structures by the advantage of the lower specific weight of the plastic component is combined with the relevant properties of the metal component for the respective application.
- optimal power transmission and distribution between the components is desirable.
- One possibility here is that the plastic melt penetrates into openings of the metal part and enters there a permanent solid connection.
- such components are used for example for the production of body parts in the automotive industry, such as front ends, or for metallic pins, which are sheathed in connector housings, as well as for electronic switching devices.
- a new trend is the application for mobile phones.
- a design trend to ever flatter versions has emerged in recent years.
- the plastics will be as a result harder and harder. This can be made possible by new polymer formulations, or by metal reinforcements within these plastics.
- Another problem is different thermal expansion coefficients between metal and plastic. This can be a problem during the manufacturing process, as here again in the process additional stress between the metal and plastic is built up. But it can also be a problem in the application, if different temperatures are applied to the component in a short time and so create stresses.
- sealing compounds based on silicones or epoxy resins are introduced into the gaps between metal and plastic. These can run and harden and, under optimum conditions, build up adhesion between metal and plastic.
- hot melt adhesives are applied to the metal for sealing.
- the hot melt adhesive adheres to the metal and the encapsulated plastic then on the hot melt adhesive.
- the method has the disadvantage that hot melt adhesives are not crosslinked and thus have only limited solvent resistance and thermal resistance.
- thermoplastic coatings for metallic substrates is also known from US 6,494,983.
- steel containers are provided with a layer of thermoplastic instead of a PVC lining.
- the thermoplastic material is not diffusion-tight and therefore can in the presence of aggressive media corrode the underlying metal.
- the metal is therefore equipped with thermosetting corrosion protection, but on which the thermoplastic does not adhere.
- Thermoplastic plastic powder is therefore sometimes added to the thermoset, so that adhesion is then formed between the anticorrosive agent and the plastic in the subsequent plastic coating.
- thermoplastic bonding agent between the plastic and the metal layer.
- the adhesion promoter has such an elasticity that stresses between metal and plastic can be compensated and reduced.
- the adhesion promoter has a melting temperature equal to or less than the plastic.
- the thermoplastic adhesion promoter can be constructed as one or two layers.
- the thermoplastics preferably used as adhesion promoters have the tendency to absorb water. This results in the formation of water gas during the coating with the plastic melt, which in turn causes air pockets and thus minimizes the adhesion between metal and plastic.
- thermoplastic adhesion promoters are in a melt state that is associated with a very low viscosity. If the injection-molded component now cools, the volume shrinkage produces an internal pressure which causes the thermoplastic adhesion promoter to flow out. Furthermore, an uneven distribution of the thermoplastic adhesion promoter can result.
- Another disadvantage of thermoplastic adhesion promoters is their hardness in order to realize high Verkebungsfesttechniken. This also applies to the cited thermosets. But this is especially critical in the mobile phone area. Here is a variety of drop test performed so that the bonding agent between the metal and the plastic composite should also have good shock absorbing and elastic properties.
- the invention relates to a component which is at least partially formed of metal, wherein the metallic region is at least partially encapsulated with a thermoplastic layer of plastic, and between the plastic layer and the metallic region at least partially an at least on its plastic layer facing side of a heat-activatable elastic Material existing adhesion promoter layer is arranged, by means of which there is a cohesive connection between the metallic region and the plastic layer, wherein the elastic adhesion promoter from
- the reactive resin component has the possibility to enter into a chemical reaction with the plastic to be processed by injection molding.
- the heat-activatable elastic primer adhesives can be divided into two categories: a) adhesion promoters based on natural rubbers b) adhesion promoters based on synthetic rubbers.
- the natural rubber is not ground to a molecular weight (weight average) below about 100,000 Daltons, preferably not below 500,000 Daltons, and is additized.
- Synthetic rubbers are blinded. As natural rubber are basically all available qualities such as
- the synthetic rubber or synthetic rubbers may preferably be selected from the group consisting of the random copolymerized styrene-butadiene rubbers (SBR) 1 of the butadiene rubbers (BR), the synthetic polyisoprenes (IR), the butyl rubbers (HR), the halogenated butyl rubbers (XIIR), nitrile rubbers or acrylate rubbers
- SBR random copolymerized styrene-butadiene rubbers
- IR synthetic polyisoprenes
- HR butyl rubbers
- XIIR halogenated butyl rubbers
- the coupling agent is based on nitrile rubber or nitrile butadiene rubbers.
- Nithlbutadiene rubbers are available as Europrene TM from Eni Chem, or as Krynac TM and Perbunan TM from Bayer, or as Breon TM and Nipol TM from Zeon. Hydrogenated nitrile-butadiene rubbers are available under Therban TM from Bayer and Zetpol TM from Zeon. Nitrile-butadiene rubbers are polymerized either hot or cold, with the hot-formulated types typically having a higher degree of branching which generally positively affects bond strength. These types are preferably stock of the adhesion promoter of the invention.
- the nitrile rubbers in a very preferred embodiment of the invention, have an acrylonitrile of 18 to 51 weight percent. To complete a phase separation with the To avoid reactive resins, the acrylonitrile should be greater than 18 wt .-%, again based on the total amount.
- Mooney viscosity Another criterion for the nitrile rubber is the Mooney viscosity. Since a high flexibility for the injection molding process must be ensured, the Mooney viscosity should be below 100 (Mooney ML 1 +4 at 100 0 C). In order to obtain the highest possible dimensional stability of the adhesion promoter, the Moony viscosity should be above 50 (Mooney ML 1 +4 at 100 ° C.).
- Commercial examples of such nitrile rubbers are, for example, Nipol TM N917 from Zeon Chemicals.
- the carboxyl-, amine-, epoxy- or methacrylate-terminated nitrile-butadiene rubbers can be used as additional components.
- Such elastomers particularly preferably have a molecular weight of M w ⁇ 20,000 g / mol and an acrylonitrile content of 5% by weight to 30% by weight. In order to achieve optimum miscibility, the acrylonitrile should be at least greater than 5%, again based on the total amount of elastomer.
- terminated nitrile rubbers are e.g. Hycar TM from Noveon.
- carboxy-terminated nitrile butadiene rubbers preference is given to using rubbers having a carboxylic acid number of from 15 to 45, very preferably from 20 to 40.
- the carboxylic acid number is given as the value in milligrams of KOH required to completely neutralize the carboxylic acid.
- amine-terminated nitrile-butadiene rubbers particular preference is given to using rubbers having an amine value of from 25 to 150, more preferably from 30 to 125.
- the amine value refers to the amine equivalents determined by titration against HCl in ethanolic solution. The amine value is based on amine equivalents per 100 grams of rubber, but ultimately divided by 100.
- the proportion of reactive resins in the adhesion promoter is between 70 and 30 wt .-%.
- a very preferred group includes epoxy resins.
- the molecular weight M w of the epoxy resins varies from 100 g / mol up to a maximum of 10,000 g / mol for polymeric epoxy resins.
- the epoxy resins include, for example, the reaction product of bisphenol A and epichlorohydrin, epichlorohydrin, glycidyl ester, the reaction product of epichlorohydrin and p-amino phenol.
- Preferred commercial examples include Araldite TM 6010, CY-281 TM, ECN TM 1273, ECN TM 1280, MY 720, RD-2 from Ciba Geigy, DER TM 331, DER TM 732, DER TM 736, DEN TM 432, DEN TM 438, DEN TM 485 from Dow Chemical, Epon TM 812, 825, 826, 828, 830, 834, 836, 871, 872,1001, 1004, 1031 etc. from Shell Chemical and HPT TM 1071, HPT TM 1079 also from Shell Chemical.
- Examples of commercial aliphatic epoxy resins are e.g. Vinylcyclohexane dioxides such as ERL-4206, ERL-4221, ERL 4201, ERL-4289 or ERL-0400 from Union Carbide Corp.
- novolak resins e.g. Epi-Rez TM 5132 from Celanese, ESCN-001 from Sumitomo Chemical, CY-281 from Ciba Geigy, DEN TM 431, DEN TM 438, Quatrex 5010 from Dow Chemical, RE 305S from Nippon Kayaku, Epiclon TM N673 from DaiNipon Ink Chemistry or Epicote TM 152 from Shell Chemical.
- reactive resins it is also possible to use terpene-phenolic resins, e.g. Use NIREZ TM 2019 from Arizona Chemical.
- reactive resins may also be phenolic resins, e.g. YP 50 from Toto Kasei, PKHC from Union Carbide Corp. and BKR 2620 from Showa Union Gosei Corp. deploy.
- phenolic resole resins can also be used as reactive resins in combination with other phenolic resins.
- polyisocyanates such as e.g. Use Coronate TM L from Nippon Polyurethane Ind., Desmodur TM N3300 or Mondur TM 489 from Bayer.
- adhesion promoter adhesive-increasing (tackifying) resins are also added; very advantageous to a proportion of up to 20% by weight, based on the total mixture of the adhesion promoter.
- tackifying resins to be added all previously known adhesive resins described in the literature can be used without exception. Mention may be made representative of the pinene, indene and rosin resins, their disproportionated, hydrogenated, polymerized, esterified derivatives and salts, the aliphatic and aromatic hydrocarbon resins, terpene resins and terpene phenolic resins and C5, C9 and other hydrocarbon resins. Any combination of these and other resins can be used to adjust the properties of the resulting adhesive as desired.
- crosslinking agents and accelerators can also be optionally added to the mixture.
- Suitable accelerators are e.g. Imidazoles, commercially available as 2M7, 2E4MN, 2PZ-CN, 2PZ-CNS, P0505, L07N from Shikoku Chem. or Curezol 2MZ from Air Products.
- Further suitable crosslinkers are HMTA (hexamethylenetetramine) additives.
- Dicyandiamide can also be added for the crosslinking of epoxides.
- di- or multifunctional maleic anhydrides are suitable as crosslinking components.
- amines in particular tertiary amines can be used for acceleration.
- plasticizers can also be used.
- plasticizers based on polyglycol ethers, polyethylene oxides, phosphate esters, aliphatic carboxylic acid esters and benzoic acid esters can be used.
- aromatic carboxylic esters, relatively high molecular weight diols, sulfonamides and adipic esters can be used.
- optional fillers eg fibers, RuIi, zinc oxide, titanium dioxide, chalk, solid or hollow glass spheres, microspheres of other materials, silica, silicates
- nucleating agents eg fibers, RuIi, zinc oxide, titanium dioxide, chalk, solid or hollow glass spheres, microspheres of other materials, silica, silicates
- blowing agents eg fibers, RuIi, zinc oxide, titanium dioxide, chalk, solid or hollow glass spheres, microspheres of other materials, silica, silicates
- nucleating agents e.g fibers, RuIi, zinc oxide, titanium dioxide, chalk, solid or hollow glass spheres, microspheres of other materials, silica, silicates
- blowing agents e.g fibers, RuIi, zinc oxide, titanium dioxide, chalk, solid or hollow glass spheres, microspheres of other materials, silica, silicates
- adhesive-enhancing additives and thermoplastics e.g., adhesive-enhancing additives and thermoplastics,
- additives are added, e.g. Polyvinylformal, polyacrylate rubbers, chloroprene rubbers, ethylene-propylene-diene rubbers, methyl-vinyl-silicone rubbers, fluorosilicone rubbers, tetrafluoroethylene-propylene copolymer rubbers, butyl rubbers.
- Polyvinyl butyrals are available as Butvar TM from Solucia, under Pioloform TM from Wacker and under Mowital TM from Kuraray.
- Polyacrylate Rubbers are available from Nipol AR TM from Zeon. Chloroprene rubbers are available under Baypren TM from Bayer.
- Ethylene-propylene-diene rubbers are available under Keltan TM from DSM, under Vistalon TM from Exxon Mobile and under Buna EP TM from Bayer.
- Methyl vinyl silicone rubbers are available from Silastic TM from Dow Corning and Silopren TM from GE Silicones. Fluorosilicone rubbers are available as Silastic TM from GE Silicones. Butyl rubbers are available on Esso Butyl TM from Exxon Mobile.
- Polyvinylformals are available on Formvar TM from Ladd Research.
- additives are added, e.g. thermoplastic materials from the group of the following polymers: polyurethanes, polystyrene, acrylonitrile-butadiene-styrene terpolymers, polyesters, hard polyvinyl chlorides, soft polyvinyl chlorides, polyoxymethylenes, polybutylene terephthalates, polycarbonates, fluorinated polymers, such as. Polytetrafluoroethylene, polyamides, ethylene vinyl acetates, polyvinyl acetates, polyimides, polyethers, copolyamides, copolyesters, polyolefins, e.g. Polyethylene, polypropylene, polybutene, polyisobutene, and poly (meth) acrylates. The list is not exhaustive.
- the bond strength of the adhesion promoters can be increased by further targeted additives.
- Polyimine or polyvinyl acetate copolymers also use as adhesion-promoting additives.
- the above-described adhesive formulations are in film-form or dissolved form.
- the primer are coated over the entire surface of a release paper or a release film.
- the adhesion promoter has only a slight adhesive tack at room temperature and must be activated by heat. The heat converts the adhesion promoter to the tacky state and, in a very preferred embodiment, initiates a crosslinking reaction of the reactive resins.
- the adhesion promoter has an activation temperature below the melting temperature TS , A of the processing by injection molding plastic.
- the activation temperature is defined as the temperature at which the adhesion promoter has a pressure-sensitive adhesive.
- the bonding agent has only a static glass transition temperature TQ , A, this should also be below the melting temperature TS, A of the injection-molded plastic.
- the adhesion promoter has a plurality of static glass transition temperatures TG, A, at least the lowest static glass transition temperature TQ, A should lie below the melting temperature TS, A of the plastic to be injection-molded, but more preferably at least 2 of the static glass transition temperatures TG , A-
- the bonding agent is punched as a sheet-like structure on a release film or a release paper.
- the film thickness of the adhesion promoter in a preferred embodiment is between 10 ⁇ m and 10 mm, more preferably between 25 ⁇ m and 1 mm.
- the preparation of the adhesion promoter can be carried out from solution or from the melt.
- For the transfer into a film-shaped structure can also be coated from solution or from the melt.
- the hybrid technique or the insert and outsert technique are preferably used by injection molding.
- Arburg Allrounder V can be used for the implementation.
- the metal parts are provided with the heat-activatable adhesion promoter.
- the metal parts are equipped with the heat-activatable adhesion promoter over their entire surface. This can be done, for example, with flat components with a Schurollenlaminator.
- heating presses or irons are also conceivable in manual form. It can be used in principle any device which is able to apply temperature and pressure.
- the heat-activable adhesion promoter is present in a particularly preferred form on a release paper or release film.
- the adhesion promoter After heat activation, the adhesion promoter then adheres to the metal component. Depending on the design, it may then be necessary for the components to be punched again before they are used by injection molding. Before the metal part equipped with the adhesion promoter is overmoulded with the plastic, any separating film or release paper still present must be removed from the adhesion promoter.
- the heat-activable adhesion promoter is already punched as a foil-shaped structure beforehand, in order then to be applied to the metal component as a stamped product. Again, heat and pressure are needed for this application process.
- the heat-activatable adhesion promoter is applied from solution.
- the metal component is immersed in a solution of the heat-activatable adhesion promoter and then freed from the solvent in a drying process.
- the process can also be controlled by spray coating or Aufrakelung.
- the heat-activable adhesion promoter is applied only without heat and thus easily adheres.
- the thickness of the heat-activatable adhesion promoter layer applied to the metal region varies depending on the particular application and may be between 10 ⁇ m and several millimeters, the thickness in any case should be selected such that during the injection molding of the thermoplastic material, the adhesion promoter on the Plastic and the metal side facing a sufficient amount for the heat activation amount of heat is supplied to an optimal To allow adhesion between metal, adhesive layer and thermoplastic.
- the metal components which are provided with heat activatable adhesion promoters, at least in regions, are injection-molded with thermoplastic materials by injection molding.
- thermoplastic materials for injection molding e.g. Polystyrene, polymers of styrene acrylonitrile (SAN), acryl butadiene styrene (ABS), styrene butadiene styrene (SBS), acrylonitrile styrene acrylonitrile (ASA), polyamide 6, polyamide 6,6
- thermoplastics can also be filled with up to 60% glass fibers or other fillers. 5
- the encapsulation with thermoplastic materials heat is entered.
- the heat-activable adhesion promoter is heat-activated by this temperature and immediately builds up adhesion to the thermoplastic.
- the adhesion to the metal component increases as a result of the heat input.
- the heat is the
- thermoplastic should be preferred
- JO reactive groups such as epoxy, hydroxy, acid anhydrides or amines / amides.
- the reactive resin of the primer must then be chosen accordingly so that it can undergo a chemical bonding reaction.
- the adhesion promoter can also build up a back pressure to the volume shrinkage of the thermoplastic material. This can be the case, for example, for 5 adhesion promoters which contain phenol or phenol / resol as reactive resin component Contain resins, which are then brought, for example, with HMTA for crosslinking.
- water forms in the crosslinking reaction that produces high pressure at temperatures above 100 ° C. as water vapor. This can be advantageous if one wishes to minimize the volume shrinkage of the thermoplastic by injection molding 5.
- the components are more firmly pressed into the moldings and it forms a more intense bonding education between the individual components.
- adhesion promoter used in this process is the thermal post-reaction.
- the crosslinking reaction is reinitiated and thus the crosslinking continues over a longer period of time and the adhesion to the plastic side and to the metal is further increased within the component.
- Another advantage lies in the elastic nature of the adhesion promoter. Due to the selected chemical composition, in addition to the adhesion promoter function also a shock-absorbing effect can be taken. Thus, in particular in the combination of metal and relatively hard and brittle thermoplastics under shock loads of the adhesion promoter take over a shock absorbing effect. The components can accordingly in the later
- the primer causes not only a shear and tensile force enhancing effect but also an increase in shock resistance. This can be beneficial in automotive applications where such injection molded components must absorb relatively high impacts, and this over a wide temperature range. But there are also advantages for housing applications in
- the depressions / openings are usually realized from punching or embossing processes for economic reasons, deformations of the metal structure often occur, which can lead to problems in the exact positioning of the component in the injection molding tool and also in the later end use.
- the number of required constructive openings can be reduced or completely dispensed with by using the adhesion promoter according to the invention.
- the high injection pressure of the thermoplastics often leads to undesirable deformation / displacement of the metal structures.
- the adhesion promoter according to the invention the injection pressure can be reduced in many cases, whereby the metal structures are less mechanically stressed and are much more stable in their dimension.
- the bond area between PET and aluminum plate is 2 cm 2 .
- a 1.5 mm thick Al plate with a width of 2 cm is connected to a injection-molded PET plate (TEREZ PET 3000, TER Hell Plastic GmbH) with a width of 2 cm and a layer thickness of 3 mm.
- the drop test is carried out.
- a 50 g weight is attached to the PET plate.
- the entire composite is dropped from different heights onto a steel plate. It determines the height at which the bonding with the heat-activatable primer can still absorb the impact and the AI / PET Test specimen does not fall apart.
- the test is also carried out at different temperatures.
- the bond strength is determined by a dynamic shear test.
- the 0 bonding surface is 2 cm 2 . It is a 1.5 mm thick AI plate with a width of
- test samples are torn off with a tensile tester at 10 mm / min.
- the result is given in N / mm 2 and represents the maximum force related to the bond area measured to the test specimens
- Nipol N 1094-80 nitrile rubber
- Zeon 25 wt .-% Breon N33 H80 (nitrile rubber 33% acrylonitrile) from. Zeon, 40 wt .-% phenolic novolac resin Durez 33040 mixed with 8% HMTA (Rohm and Haas) and 10% by weight of
- Examples 1 and 2 were laminated to the aluminum surface with a heated roll laminator with a roll temperature of 125 ° C. and a feed rate of 1 m / min at a line pressure of 2 bar.
- the bond area was 1 x 2 cm, the
- thermoplastic hot melt adhesive For the bonding process, a thermoplastic hot melt adhesive was used
- Polyethylene base used.
- the layer thickness was 100 ⁇ m. It was called
- PET was first melted by Ter Hell Plastic GmbH (TEREZ PET 3000). The material was previously dried at 140 ° C. for 4 hours in a dry-air oven. It was then melted to 280 0 C with a hot plate. It was a PET plate with 2 cm wide 8 cm in length and a layer thickness of 3 mm formed by a special shape and exerting pressure 0 by a Bürkle press. Subsequently, at 5 bar, the Al plate (1.5 mm thick, 2 cm wide, 8 cm long, adhesive bonding surface 2 cm 2 , adhesive overlapping and end) with Example 1 or 2 or Reference Example 1 or 2 on the PET plate (s. Lamination) applied. The compression process was carried out at 265 ° C within 5 seconds.
- the heat-activatable adhesion promoters 1 and 2 were tested analogously with two Reference Examples 1 and 2. As reference example 1 no adhesion promoter was used. As reference example 2 an adhesion promoter based on a thermoplastic. All examples were activated under identical conditions.
- Table 1 shows that Inventive Examples 1 and 2 have a significantly better shock resistance, which in turn is reflected in the higher drop height.
- Table 2 shows that Inventive Examples 1 and 2 have the highest dynamic shear strength.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020107027730A KR101600586B1 (ko) | 2008-07-03 | 2009-07-03 | 다이 캐스팅 구성요소들 중 플라스틱과 금속 간의 결합 안정성을 증가시키기 위한 열활성가능한 접착제 |
CN200980125986.2A CN102083607B (zh) | 2008-07-03 | 2009-07-03 | 增加模铸组件中塑料和金属之间的粘结稳定性的可热活化粘合剂 |
US12/996,333 US20110123816A1 (en) | 2008-07-03 | 2009-07-03 | Heat Activatable Adhesives for Increasing the Bond Stability Between Plastic and Metals in Die Casting Components |
JP2011515244A JP2011526223A (ja) | 2008-07-03 | 2009-07-03 | 複合射出成形品のプラスチック及び金属間の接着強度を向上させるための熱活性型接着剤 |
EP20090772183 EP2293916B1 (de) | 2008-07-03 | 2009-07-03 | Hitze-aktivierbare klebemassen zur steigerung der verbundfestigkeit zwischen kunststoff und metallen in spritzgussbauteilen |
ES09772183T ES2391073T3 (es) | 2008-07-03 | 2009-07-03 | Masas adhesivas termoactivables para aumentar la resistencia de la unión entre plástico y metales en piezas de moldeo por inyección |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810031196 DE102008031196A1 (de) | 2008-07-03 | 2008-07-03 | Hitze-aktivierbare Klebemassen zur Steigerung der Verbundfestigkeit zwischen Kunststoff und Metallen in Spritzgußbauteilen |
DE102008031196.0 | 2008-07-03 |
Publications (1)
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WO2010000483A1 true WO2010000483A1 (de) | 2010-01-07 |
Family
ID=40941799
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PCT/EP2009/004819 WO2010000483A1 (de) | 2008-07-03 | 2009-07-03 | Hitze-aktivierbare klebemassen zur steigerung der verbundfestigkeit zwischen kunststoff und metallen in spritzgussbauteilen |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110123816A1 (de) |
EP (1) | EP2293916B1 (de) |
JP (2) | JP2011526223A (de) |
KR (1) | KR101600586B1 (de) |
CN (1) | CN102083607B (de) |
DE (1) | DE102008031196A1 (de) |
ES (1) | ES2391073T3 (de) |
WO (1) | WO2010000483A1 (de) |
Cited By (3)
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DE102011101843A1 (de) * | 2011-05-17 | 2012-11-22 | Webasto Ag | Kunststoffbauteil eines Fahrzeugs mit einem Einlegeteil |
EP2886287A1 (de) * | 2013-12-20 | 2015-06-24 | nolax AG | Verfahren zur Herstellung von Hybridbauteilen |
EP3670177A1 (de) | 2018-12-21 | 2020-06-24 | Nolax AG | Mehrschichtfilm zur beschichtung eines polymerformteils |
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WO2013080270A1 (ja) * | 2011-11-28 | 2013-06-06 | 三菱電機株式会社 | エレベータの操作ボタン、及びエレベータの操作ボタンの製造方法 |
CN102533158B (zh) * | 2011-12-31 | 2013-05-08 | 南京占一科技有限公司 | 压敏胶、压敏胶带及制备方法 |
KR101574186B1 (ko) * | 2014-03-05 | 2015-12-03 | 도레이첨단소재 주식회사 | 우수한 내크랙성 및 가스 배리어 특성을 갖는 플라스틱 라이너 및 이의 제조방법 |
DE102014008815A1 (de) * | 2014-06-11 | 2016-01-21 | Albis Plastic Gmbh | Verfahren zum Herstellen eines Werkstoffverbundes aus Metall und Kunststoff zu einem Kunststoff-Metall-Hybridbauteil |
JP2016132198A (ja) * | 2015-01-21 | 2016-07-25 | 株式会社河合楽器製作所 | アルミニウム系複合材及びその製造方法 |
JP2017047542A (ja) * | 2015-08-31 | 2017-03-09 | 中西金属工業株式会社 | センサホルダ部を有する保護カバーの製造方法 |
KR101724894B1 (ko) | 2015-09-09 | 2017-04-07 | 김용대 | 흡습 기능을 가지는 창호 |
DE102015219798A1 (de) * | 2015-10-13 | 2017-04-13 | Tesa Se | Verfahren zum Verbinden zweier Bauteile unterschiedlicher Materialien |
JP6750962B2 (ja) | 2016-05-09 | 2020-09-02 | ポリプラスチックス株式会社 | インサート成形体、及び燃料ポンプ用電気接続コネクタ |
CN106853668A (zh) * | 2016-12-20 | 2017-06-16 | 维沃移动通信有限公司 | 一种usb装置的加工方法、usb装置和移动终端 |
KR102276886B1 (ko) | 2017-04-28 | 2021-07-14 | 삼성전자주식회사 | 전자 장치 및 그의 하우징 제조 방법 |
JP7477597B2 (ja) * | 2020-04-10 | 2024-05-01 | 株式会社巴川コーポレーション | 接着剤組成物 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011101843A1 (de) * | 2011-05-17 | 2012-11-22 | Webasto Ag | Kunststoffbauteil eines Fahrzeugs mit einem Einlegeteil |
EP2886287A1 (de) * | 2013-12-20 | 2015-06-24 | nolax AG | Verfahren zur Herstellung von Hybridbauteilen |
WO2015091606A1 (de) * | 2013-12-20 | 2015-06-25 | Nolax Ag | Verfahren zur herstellung von hybridbauteilen |
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EP3670177A1 (de) | 2018-12-21 | 2020-06-24 | Nolax AG | Mehrschichtfilm zur beschichtung eines polymerformteils |
Also Published As
Publication number | Publication date |
---|---|
KR20110048490A (ko) | 2011-05-11 |
EP2293916B1 (de) | 2012-08-08 |
CN102083607A (zh) | 2011-06-01 |
DE102008031196A1 (de) | 2010-01-07 |
JP2011526223A (ja) | 2011-10-06 |
JP2015107649A (ja) | 2015-06-11 |
US20110123816A1 (en) | 2011-05-26 |
KR101600586B1 (ko) | 2016-03-07 |
CN102083607B (zh) | 2015-03-25 |
ES2391073T3 (es) | 2012-11-21 |
EP2293916A1 (de) | 2011-03-16 |
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