WO2001036172A1 - Produit pour recouvrir la surface d'un substrat, et procede de recouvrement de la surface d'un substrat - Google Patents

Produit pour recouvrir la surface d'un substrat, et procede de recouvrement de la surface d'un substrat Download PDF

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Publication number
WO2001036172A1
WO2001036172A1 PCT/EP2000/011262 EP0011262W WO0136172A1 WO 2001036172 A1 WO2001036172 A1 WO 2001036172A1 EP 0011262 W EP0011262 W EP 0011262W WO 0136172 A1 WO0136172 A1 WO 0136172A1
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WO
WIPO (PCT)
Prior art keywords
layer
adhesive
coating agent
substrate
coating
Prior art date
Application number
PCT/EP2000/011262
Other languages
German (de)
English (en)
Inventor
Anja Keller
Thomas Gruber
Karl Holdik
Wolfgang Schähl
Original Assignee
Bombadier Transportation Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bombadier Transportation Gmbh filed Critical Bombadier Transportation Gmbh
Priority to EP00979560A priority Critical patent/EP1274552A1/fr
Priority to CA002389854A priority patent/CA2389854A1/fr
Priority to JP2001538152A priority patent/JP2003527258A/ja
Priority to AU17004/01A priority patent/AU1700401A/en
Priority to HU0204104A priority patent/HUP0204104A2/hu
Publication of WO2001036172A1 publication Critical patent/WO2001036172A1/fr
Priority to NO20022268A priority patent/NO20022268L/no

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Classifications

    • 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
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • 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
    • 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
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C2063/006—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor of surfaces having irregularities or roughness
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • 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
    • B29L2009/00—Layered products
    • 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
    • B29L2031/3005—Body finishings
    • 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
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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
    • B32B2375/00—Polyureas; Polyurethanes
    • 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

Definitions

  • the present invention relates to a coating composition for coating the surface of a substrate, for example a body or a body part for motor vehicles or a component, in particular a car body, of rail vehicles, in the form of a film which has an upper cover layer, a middle coloring layer and a lower one has curable carrier layer.
  • the present invention further relates to a method for coating the surface of a substrate with such a coating agent.
  • Such coating compositions are known. They serve to coat product surfaces, especially as a replacement for painting.
  • EP 0 352 298 B1 discloses a body paneling and a method for its production.
  • the body paneling is made of plastic and is coated with a film consisting of a carrier layer, a pigment layer and a clear lacquer layer consists.
  • the laminate is heated and preformed and then placed in an injection mold and back-molded with plastic, so that the finished body paneling is created.
  • US 50 21 278 A describes a thermally deformable laminate composed of a carrier layer, a color layer and a protective clear lacquer layer. The laminate is heated and preformed and molded onto the substrate.
  • EP 0 615 840 A1 relates to a coating film for a metal container for beverages in the form of a laminate which, when viewed from the bottom up, has an adhesive layer, a color layer, a polyester layer and a cover layer. The film is drawn with the adhesive layer onto a flat sheet, which is then formed into a jug.
  • DE 197 01 594 AI contains a method for producing a profile strip, in particular an edge strip for the furniture industry.
  • DE 38 17 479 AI discloses a multi-layer surface film. As a result of the application as a protective layer for smooth surfaces, it is not intended to compensate for irregularities in the substrate to be coated.
  • the object of the present invention to provide a coating agent and a method of the above-mentioned type which allows short processing times, is insensitive to external influences, releases as few emissions as possible and in which an additional surface finish can be omitted.
  • the solution consists in a coating composition with the features of claim 1 and a method in which this coating composition is used.
  • the lower carrier layer is a flowable, curable adhesive and compensation layer for gluing the film onto the surface of the substrate and for concealing irregularities in the surface of the substrate, and that a flexible, curable upper cover layer is provided.
  • reaction time of the lower adhesive and leveling layer between the surface of the substrate and the coloring layer does not play a decisive role. It can be seconds, minutes, hours or days. This is of secondary importance because the substrate is already in its final state and thus the surface or the surface is adequately protected and because no further processing steps are necessary, so that delays in production cannot occur even with a longer reaction time.
  • the method according to the invention can also be carried out in parallel with other processing steps on the same substrate, for example in parallel with another construction process of a motor vehicle or rail vehicle, since it is insensitive to immissions, in particular to dust. Only one coating step is necessary. It is not necessary to preform the coating agent. Apart from the net coating time, there are no waiting times, for example due to drying or reaction of the coating materials.
  • the lower adhesive and Compensation step is particularly easy if this layer is at least 0.150 mm, preferably at least 1 mm thick, since there is sufficient flowable material to fill all the depressions in the surface and to form a flat layer on the surface.
  • the lower adhesive and leveling layer preferably has a viscous consistency, particularly preferably a thixotropic property profile. Such a layer is viscous enough not to drip off the coating agent, but is flowable enough to be able to compensate for the irregularities in the surface of the substrate.
  • Thixotropic layers are well suited because they are normally solid to viscous, but liquefy under stress, i.e. when the coating agent is applied to the substrate, and can therefore compensate for irregularities particularly well.
  • the lower adhesive and compensating layer can be made over the entire surface, punctiform or lenticular. It is not necessary to apply the bottom layer continuously to the middle color layer. Applying glue dots or adhesive strips can be sufficient and saves material.
  • the lower adhesive and compensation layer is preferably produced on the basis of a thermally crosslinkable, moisture or photocrosslinkable polymer as well as a multicomponent material based on epoxy, polyurethane or acid-curing binders.
  • a polymer based on a polyurethane or a mixture of several polyurethanes is particularly suitable.
  • the lower adhesive and compensation layer can also be produced, for example, on the basis of a partially crosslinked pressure sensitive adhesive. These are pressure sensitive adhesives, which are already cross-linked (e.g. by means of ESH or UV curing), but which still have a stickiness and a tough consistency to ensure the necessary adhesion of the coating agent to the substrate and to compensate for the irregularities to ensure the surface of the substrate.
  • the internal crosslinking is advantageous in order to achieve a better cohesive strength of the adhesive, so that, for example, a high layer thickness of the adhesive can be produced without the coating agent dripping off.
  • the lower adhesive and compensation layer can also consist of a foamed adhesive surface, foamed adhesive points or foamed adhesive tapes. Then the foam takes over the balancing function.
  • the upper cover layer preferably consists of a thermoplastic plastic matrix which is completely cured by heating or by irradiation with UV light or electron beams or visible light. The upper cover layer cures to a preferably transparent protective layer only after the film has been applied to the finished component.
  • the upper cover layer is therefore preferably a crosslinkable, in particular thermally crosslinkable or photocrosslinkable, clear lacquer layer which, after curing, is hard enough to ensure adequate protection of the resulting coating against external influences.
  • a peelable protective layer can be attached under the adhesive and compensating layer and / or over the upper cover layer of the coating agent according to the invention, which protects the outer layers of the coating agent from damage during storage, transport and, in the case of the upper cover layer, during application to the substrate ,
  • the lower protective layer is preferably a paper film and / or the upper protective layer is a polyester film or a polyolefin, in particular a polypropylene film.
  • this can be applied to the surface by rolling and / or knife coating.
  • a coating agent with a flexible upper cover layer made of a crosslinkable, in particular thermally crosslinkable or photocrosslinkable, polymer is preferably used and the upper cover layer is thermally crosslinked or photocrosslinked after the coating agent has been applied to the substrate.
  • the surface of the substrate is coated, for example sprayed, with a liquid, preferably water, before the coating agent is applied.
  • a coating agent with a thermally curing lower adhesive and compensation layer is used, the resulting combination of substrate and coating agent can be heated in order to cure the adhesive and compensation layer to let.
  • a coating agent with an upper protective layer is preferred, which is only removed after the coating agent has been applied to the substrate.
  • the coating composition according to the invention can be applied to a surface which has unevenness of 0.5 mm and more and / or which is provided with a corrosion protection layer.
  • the coating composition according to the invention is particularly suitable for coating metallic or fiber composite substrates, for example bodies or body parts of motor vehicles or components, in particular car bodies, of rail vehicles.
  • Figure 1 is a schematic representation of the structure of an inventive
  • Figure 2 is a schematic representation of the coating agent and the substrate before coating
  • Figure 3 is a schematic representation of the finished composite
  • FIG. 1 schematically shows a sectional illustration of an exemplary embodiment of the coating agent 1 according to the invention.
  • the coating agent 1 is composed of at least three functional layers: an upper covering layer 2, a middle coloring layer 3 and a lower adhesive and compensating layer 4.
  • the upper covering layer 2 is flexible and can be hardened into a hard protective layer, preferably into a transparent clear lacquer layer.
  • the middle coloring layer 3 is preferably formed from colored thermoplastics, in particular colored polyurethane, which do not require additional curing.
  • the layer thickness should be about 20 to 100 ⁇ m.
  • the selection is made on the basis of compatibility and adhesion with the adhesive and leveling layer or with the top cover layer 3, mechanical and thermal properties and compatibility with dyes and pigments with which the plastic is to be colored.
  • the lower adhesive and compensation layer consists of a suitable adhesive such as a pressure sensitive adhesive, a hot melt adhesive, an IC system or a light-activatable adhesive or foamed adhesive surfaces, adhesive points or adhesive tapes.
  • the function of the adhesive and leveling layer 4 corresponds approximately to the takeover of mechanical properties of the filler in a normal motor vehicle painting.
  • the choice of material is based on compatibility and adhesion with the color layer or with the substrate material as well as mechanical and thermal properties and can be made on the basis of marketable materials. Moisture or thermally crosslinkable or multi-component polyurethane or epoxy systems are particularly suitable.
  • the layer thickness should be at least 150 ⁇ m. Layer thicknesses of 500 ⁇ m and more, in particular of 1 mm and more, are particularly preferred.
  • a protective film 5, preferably made of polyester, with a layer thickness of approximately 100 ⁇ m can be provided, which protects the upper cover layer 2 from mechanical damage during storage, transport and application of the coating agent 1 on the substrate. It is preferably a stiff elastic material which, when using application techniques such as rollers or doctor blades or the like, acts as a surface compensation layer, so that no rolling and grinding marks are embossed into the film.
  • the protective film 5 can be removed from the upper cover layer 2 after the application of the coating agent 1 to the substrate.
  • a temporary protective layer 6 can be provided on the lower adhesive and compensating layer 4 to protect the adhesive, which is removed before the coating agent 1 is applied to the substrate.
  • thermoplastic components of the coloring layer 3 can be polymethyl methacrylate (PMMA), polybutyl methacrylate (PBMA), polyurethane (PUR), polyethylene terephthalate (PETP), polybutylene terephthalate (PBTP), polyvinylidene fluoride (PVDF), polyvinylchloride (PVC), polyester (PES), polyolefine ( PE.PP), polyamides (PA), polycarbonates (PC), acrylonitrile butadiene styrene polymers., (ABS),
  • Acrylic stryol acrylonitrile copolymers (ASA) and acrylonitrile ethylene propylene diene stryol copolymers (A-EPDM) are used, with halogen-free polymers being preferred.
  • Suitable pigments and dyes are inorganic or organic dyes, inorganic, organic or metallic pigments, mica effect pigments, interference pigments, pearl pigments and liquid-crystalline polymers.
  • a polymerizable binder or a mixture of a thermoplastic with a polymerizable binder can be used as materials for the top cover layer 3 in the form of a transparent, radiation-curable clear lacquer layer, the binder being polymerizable either by radical or cationic means or by both methods.
  • suitable curing catalysts photoinitiators are added to the mixture.
  • the free-radically polymerizable binders are generally single or multiple ethylenically unsaturated compounds. Polyunsaturated binders are of particular importance since they contribute to the crosslinking of the reaction system into insoluble products. Radically polymerizable aliphatic urethane acrylates, polyether acrylates, polyester acrylates, epoxy acrylates or acrylated isocyanurates or mixtures of two or more of these classes of compounds are used.
  • monounsaturated compounds are acrylates, methacrylates of monohydric alcohols, acrylic acid derivatives (methyl, ethyl, butyl, isooctyl, hydroxyethyl acrylate, hydroxyethyl methacrylate, ethyl or methyl acrylate as well as vinyl and allyl compounds such as vinyl acetate, vinyl stearate and allyl acetate.
  • polyunsaturated compounds are acrylates and methacrylates of polyols such as ethylene glycol diacrylate, diethylene glycol dimethacrylate, triethylene glycol diacrylate, butanediol 1, 4-diacrylate, butadiol-1, 3-dimethacrylate, neopentylglycol diacrylate (trimethylol) propane, trimethylol acrylate acrylate, glycerol di- and - triacrylates, pentaerythritol di - / - tri - / - tetraacrylates or methacrylates, dipentaerythritol - / - tetra - / - penta - / - hexaacrylates or methacrylates,
  • polyols such as ethylene glycol diacrylate, diethylene glycol dimethacrylate, triethylene glycol diacrylate, butanediol 1, 4-diacrylate, buta
  • the unsaturated binders can be used as a mixture and as individual substances.
  • photoinitiators are benzoin, benzil, benzophenone, the benzoin alkylene ethers, esters of phenylglyoxylic acid, ⁇ -trichloroacetophenone, ⁇ -diethoxyacetophenone, ⁇ -hydroxyacetophenones, benzil dimethyl ketal, methylbenzoyl formates, 1-benzoylcyclohexone, ⁇ -aminophenone, ⁇ -aminophenone, ⁇ -aminophenone, ⁇ -aminophenone 2-diethoxyacetophenone, N-
  • the photoinitiators can be added to the binders both as individual components and in mixtures.
  • Pressure-sensitive adhesives can be used as adhesives, and thermally post-curing systems can also be used.
  • the polymers applied to the middle coloring layer 3 have a certain stickiness (so-called "tack") as non-curable, highly viscous liquids and are connected to the surface of the substrate by a contact pressure.
  • the thermally post-curing systems are subsequently cross-linked.
  • the processing temperature is usually between 10 and 40 ° C.
  • Reactive hot melt adhesives can also be used, which set by cooling and partial crystallization of the backbone polymers. By adding other reactive components, this system can be set to crosslink moisture or thermally. In the case of moisture-curing IC systems, polyurethane systems are preferred. The hardening reaction is only started when sufficient moisture is available. The moisture is provided by moistening the surface of the substrate before the application of the coating agent 1. A relative humidity of 40% should be present during processing.
  • the moisture preferably water
  • the moisture can be used microencapsulated. Applying the coating agent to the surface destroys the capsules and releases the moisture.
  • the capsule material remains as a filler in the adhesive and leveling layer 4.
  • Microencapsulated adhesives are available, for example, as epoxy resins, acrylates, polyesters and polyurethanes.
  • the hardener is activated via the temperature.
  • the hardener is previously blocked or as a solid in the resin.
  • the reactive component is microencapsulated in the resin. During the application of the coating agent 1, the capsules are destroyed and the reactive component is released, so that the curing reaction can start.
  • 2K or 3K systems based on polyurethane or epoxy systems can be used.
  • the second and / or third component can be encapsulated or be present in the applied layer by means of a removable protective group and can be activated by thermal action, at room temperature or by light (UV or visible) and by moisture.
  • the reactive component is released from the encapsulation or the protective group is split off. Both the encapsulation and the removable protective group can remain in the layer.
  • Another possibility is to present the hardener or activator component in a non-reactive molecular state in the uncrosslinked system, which is converted into the reactive state by intra- or intermolecular rearrangements after exposure to temperature or moisture or UV or visible light and thus to harden the Adhesive and leveling layer 4 leads.
  • the activator or hardener components can also be precoated as a contact reaction partner on one of the surfaces to be bonded and diffuse into the leveling and adhesive layer of the film composite and lead there or at the interface to harden the composite. It is possible to either spray all components onto the adhesive and leveling layer before applying the film and then apply the film immediately or to place individual components (activator or hardener) on the substrate surface to be bonded. It is possible to spread the hardener or activator by means of a thin film, the film either being in the form of a hardener film or activator film or being applied wet.
  • Photocrosslinkable adhesives are particularly preferred, since they have a medium to high adhesive strength and elasticity and quickly pre-cure.
  • the ultimate strength (Dark reaction) can only be achieved after hours or days.
  • the photoinitiator decomposes into a compound which triggers a polymerization by the action of radiation, preferably light. This continues after the end of the light irradiation and at points away from the light (dark reaction).
  • the adhesive and compensation layer 4 can also be present as a foamed adhesive surface, adhesive tapes or adhesive dots.
  • the adhesive surfaces and the core of the tape form a unit from the same adhesive polymer.
  • the polymer is available both as a pure viscoelastic adhesive and as an adhesive tape core in a foamed and closed-cell structure. Due to its viscoelastic properties, the polymer is able to flow into the surface roughness and thus increases the effective surface and thus the peeling resistance.
  • additional substances can be added to the coating agent 1 both in each layer and in individual layers, as are usually used in films, for example additives such as stabilizers (antioxidants, light stabilizers (UV adsorbers, HALS), metal deactivators, thiosynergists), processing aids , Leveling agents, thixotropic agents and defoamers. Fillers, fibers, lubricants, antistatic agents, plasticizers and flame retardants can also be added.
  • additives such as stabilizers (antioxidants, light stabilizers (UV adsorbers, HALS), metal deactivators, thiosynergists), processing aids , Leveling agents, thixotropic agents and defoamers.
  • Fillers, fibers, lubricants, antistatic agents, plasticizers and flame retardants can also be added.
  • the material for the curable top cover layer 2 made of thermoplastic materials and binders can be obtained in a manner known per se by extrusion.
  • the thermoplastic materials are melted in the extruder.
  • Binder, hardener and any additives are mixed and added to the melted thermoplastics in the extruder.
  • a reactive mixture is obtained which is obtained in the form of granules, powder or film.
  • the ratio between binders, hardeners and additives on the one hand and thermoplastic materials on the other is 1: 1 to 1: 5, but preferably particularly 1: 3.
  • the upper cover layer 2 is coextruded with the color-imparting middle layer 3 and the lower adhesive and leveling layer 4 in one operation to form a multilayer film.
  • the reactive radiation-curable mixture of thermoplastic, binders, hardeners and possibly additives can be represented as a transparent film in layer thicknesses of 15-100 ⁇ m and cured, for example, with UV light.
  • the initiation of the polymerization in the transparent layer is preferably carried out by means of UV lamps such as, for example, low-pressure, medium-pressure or high-pressure mercury lamps, xenon lamps, argon lamps, metal halide lamps, flash discharge lamps, laser beams or electron beams (ESH).
  • UV lamps such as, for example, low-pressure, medium-pressure or high-pressure mercury lamps, xenon lamps, argon lamps, metal halide lamps, flash discharge lamps, laser beams or electron beams (ESH).
  • the wavelength for curing with UV / VIS light is preferably 200-600 nm.
  • the bottom of the resulting film can also be coated separately with the adhesive. ⁇ , Whereby adhesive points or adhesive strips can be applied. The foamed adhesive surfaces, adhesive strips or adhesive dots are also applied separately.
  • a photoactive mixture is composed by mixing:
  • PMMA Titanium 6000 was chosen as the thermoplastic for the coloring layer, since this is identical to the thermoplastic components of the clear top layer and therefore has the best adhesion and compatibility. Pigments and dyes can also be easily incorporated into the melt at approx. 220 ° C.
  • metallic pigments were also used (Al-Flakes PCR 501 from Eckart, a powdery nonleaving pigment that is coated with SiO 2 and has a particle size distribution of 10 to 60 ⁇ m) or a red metallic gloss pigment (mica flakes Iriodin ® 504 from Merck, a powdery ⁇ -Fe 2 O 3 -coated mica with a particle size distribution of 10 to 60 ⁇ m).
  • thermoplastic polyurethane KU-1-8602 or KU-2-8602 (Bayer) in a continuous process:
  • FIGS. 2 and 3 illustrate the function of the adhesive and compensating layer 4 when applying the coating agent 1 to a substrate 10.
  • the coating agent 1 can be applied to roughly prepared surfaces with unevenness of up to 0.5 mm or more and to temporarily corrosion-protected surfaces 11, which, for example are coated with a 2K EP metal base from the Lankwitz paint factory.
  • the coating agent 1 is pressed firmly onto the surface 11 of the metallic substrate 10 by means of rollers and / or, if appropriate, large-area doctoring.
  • the flowable adhesive of the lower adhesive and leveling layer 4 is distributed over the unevenness 12 in the surface 11 of the substrate 10.
  • the protective film 5 can be removed from the upper cover layer 2. Subsequently, the top cover layer 2 is hardened by means of radiation or heating, and the abrasion-resistant final state is thus achieved. The surface 11 of the substrate 10 is thus completely coated.
  • the reaction time of the adhesive can be hours or days. However, this does not matter, since the surface 11 is already in its final state and is therefore adequately protected from external influences, so that the substrate 10 can be processed further without waiting.
  • the surface 11 of the substrate 10 is preferably coated, for example sprayed, with a thin water film before the application of the coating agent 1.
  • the reaction temperature of which should preferably be about 50 to 70 ° C the necessary thermal threshold value is applied by heating the entire layer structure after the application of the coating agent 1, specifically either by heating in the case of thermally curing upper cover layers 2 or by radiation in the case of photo-crosslinkable upper cover layers 2. Investigations have shown that, for example, 2 * 2 - 3 m / min; 120 W / cm, sufficient thermal heating to a depth of approx. 2 mm is achieved.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un produit pour recouvrir la surface d'un substrat, se présentant sous la forme d'un film qui présente une couche de couverture, qui est la couche supérieure, une couche de coloration, qui est la couche centrale, et une couche de support, qui est la couche inférieure. Il est prévu, selon l'invention, que la couche de support soit une couche d'adhésion et de compensation, coulante, durcissable, servant au collage dudit film sur la surface du substrat et à la compensation des irrégularités de la surface du substrat, et que ledit film comporte une couche de couverture souple, durcissable. La présente invention concerne en outre un procédé de recouvrement de la surface d'un substrat faisant appel à un tel produit de recouvrement.
PCT/EP2000/011262 1999-11-16 2000-11-14 Produit pour recouvrir la surface d'un substrat, et procede de recouvrement de la surface d'un substrat WO2001036172A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP00979560A EP1274552A1 (fr) 1999-11-16 2000-11-14 Produit pour recouvrir la surface d'un substrat, et procede de recouvrement de la surface d'un substrat
CA002389854A CA2389854A1 (fr) 1999-11-16 2000-11-14 Produit pour recouvrir la surface d'un substrat, et procede de recouvrement de la surface d'un substrat
JP2001538152A JP2003527258A (ja) 1999-11-16 2000-11-14 基体の表面を被覆するための被覆材および基体の表面を被覆する方法
AU17004/01A AU1700401A (en) 1999-11-16 2000-11-14 Coating agent and a method for coating the surface of a substrate
HU0204104A HUP0204104A2 (en) 1999-11-16 2000-11-14 Coating agent and a method for coating the surface of a substrate
NO20022268A NO20022268L (no) 1999-11-16 2002-05-13 Beleggingsmiddel og fremgangsmåte for belegging av overflaten av et substrat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19954970A DE19954970A1 (de) 1999-11-16 1999-11-16 Beschichtungsmittel zur Beschichtung der Oberfläche eines Substrates und Verfahren zur Beschichtung der Oberfläche eines Substrates
DE19954970.2 1999-11-16

Publications (1)

Publication Number Publication Date
WO2001036172A1 true WO2001036172A1 (fr) 2001-05-25

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Application Number Title Priority Date Filing Date
PCT/EP2000/011262 WO2001036172A1 (fr) 1999-11-16 2000-11-14 Produit pour recouvrir la surface d'un substrat, et procede de recouvrement de la surface d'un substrat

Country Status (12)

Country Link
EP (1) EP1274552A1 (fr)
JP (1) JP2003527258A (fr)
KR (1) KR20020049053A (fr)
CN (1) CN1390167A (fr)
AU (1) AU1700401A (fr)
CA (1) CA2389854A1 (fr)
CZ (1) CZ20021656A3 (fr)
DE (1) DE19954970A1 (fr)
HU (1) HUP0204104A2 (fr)
NO (1) NO20022268L (fr)
PL (1) PL355622A1 (fr)
WO (1) WO2001036172A1 (fr)

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CN1460561B (zh) * 2002-02-28 2012-01-04 关西涂料株式会社 汽车车体的涂饰方法
US6933006B2 (en) * 2002-10-16 2005-08-23 E. I. Du Pont De Nemours And Company Process for the production of paint coating layers
AT500082B1 (de) * 2003-10-31 2007-08-15 Senoplast Klepsch & Co Gmbh Mehrschichtiger verbundkörper und dessen herstellung
DE102004031062A1 (de) * 2004-06-28 2006-01-19 Basf Coatings Ag Verfahren und Vorrichtung zur Reinigung von Härtungsstationen in Beschichtungsstraßen
EP1874541B1 (fr) 2005-04-29 2011-11-16 3M Innovative Properties Company Films de protection en polyurethanne multicouche
US10265932B2 (en) 2005-10-21 2019-04-23 Entrotech, Inc. Protective sheets, articles, and methods
DE102006060398A1 (de) * 2006-12-20 2008-06-26 Mankiewicz Gebr. & Co (Gmbh & Co Kg) Verfahren zur Applikation einer Flüssigfolie nach wässriger Vorbehandlung der zu beschichtenden Oberfläche
DE102006060397A1 (de) * 2006-12-20 2008-06-26 Mankiewicz Gebr. & Co (Gmbh & Co Kg) Verfahren zum Herstellen eines entfernbaren Oberflächenschutzes
WO2009041964A1 (fr) 2007-09-25 2009-04-02 Entrotech, Inc. Films de remplacement de peinture, composites de ceux-ci, et procédés associés
US10981371B2 (en) 2008-01-19 2021-04-20 Entrotech, Inc. Protected graphics and related methods
DE202009003176U1 (de) * 2009-03-10 2010-07-22 Glabete Ag Befestigungsmittel
WO2012061296A2 (fr) * 2010-11-05 2012-05-10 3M Innovative Properties Company Adhésifs modifiés par silicone présentant des propriétés antidérapantes
KR102216494B1 (ko) * 2012-07-31 2021-02-16 헨켈 아게 운트 코. 카게아아 박형 접착제 층을 사용한 접착 방법
CN103265897B (zh) * 2012-12-26 2015-03-25 上海中航光电子有限公司 一种光学粘接件及触摸显示装置
JP6361024B2 (ja) * 2014-08-07 2018-07-25 パナソニックＩｐマネジメント株式会社 樹脂構造体およびこれを用いた電気掃除機
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US20190161646A1 (en) 2016-09-20 2019-05-30 Aero Advanced Paint Technology, Inc. Paint Film Appliques with Reduced Defects, Articles, and Methods
DE102018124859A1 (de) * 2018-10-09 2020-04-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Folienaufbau

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Also Published As

Publication number Publication date
CZ20021656A3 (cs) 2003-01-15
DE19954970A1 (de) 2001-06-07
JP2003527258A (ja) 2003-09-16
CN1390167A (zh) 2003-01-08
CA2389854A1 (fr) 2001-05-25
NO20022268D0 (no) 2002-05-13
PL355622A1 (en) 2004-05-04
HUP0204104A2 (en) 2003-05-28
KR20020049053A (ko) 2002-06-24
EP1274552A1 (fr) 2003-01-15
AU1700401A (en) 2001-05-30
NO20022268L (no) 2002-05-13

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