EP2097258A2 - Procédé de revêtement d'objets par un film - Google Patents

Procédé de revêtement d'objets par un film

Info

Publication number
EP2097258A2
EP2097258A2 EP07821198A EP07821198A EP2097258A2 EP 2097258 A2 EP2097258 A2 EP 2097258A2 EP 07821198 A EP07821198 A EP 07821198A EP 07821198 A EP07821198 A EP 07821198A EP 2097258 A2 EP2097258 A2 EP 2097258A2
Authority
EP
European Patent Office
Prior art keywords
film
radiation
layer
lamps
optional
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP07821198A
Other languages
German (de)
English (en)
Inventor
Erich Beck
Lars Koppelmann
Roland Streng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to EP07821198A priority Critical patent/EP2097258A2/fr
Publication of EP2097258A2 publication Critical patent/EP2097258A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/22—Articles comprising two or more components, e.g. co-extruded layers the components being layers with means connecting the layers, e.g. tie layers or undercuts
    • 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
    • B32B27/08—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 synthetic resin
    • 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
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3631—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices moving in a frame for pressing and stretching; material being subjected to compressing stretching
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • B29C2043/3644—Vacuum bags; Details thereof, e.g. fixing or clamping
    • 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
    • B29C45/1418—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 inserts being deformed or preformed, e.g. by the injection pressure
    • B29C2045/14237—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 inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29C45/1418—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 inserts being deformed or preformed, e.g. by the injection pressure
    • 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
    • B29C45/14811—Multilayered articles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • 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
    • 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
    • B29L2031/3064—Trains
    • 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
    • B29L2031/3067—Ships
    • 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
    • B29L2031/3076—Aircrafts
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • 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
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
    • 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
    • B32B2509/00—Household appliances
    • 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
    • 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
    • B32B2607/00—Walls, panels
    • 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]

Definitions

  • the present invention relates to a simplified process for film coating articles by radiation curing.
  • EP 819 520 A2 describes the production of back-injected deep-drawn lacquer films whose lacquer is cured by means of radiation curing.
  • WO 06/000349 describes an apparatus for radiation curing optionally under an inert atmosphere.
  • WO 00/63015 discloses a process in which radiation-curable films are produced.
  • radiation curing preferably takes place after deep-drawing and particularly preferably after back-injection.
  • the DaimlerChrysler HighTechReport 1/2005 http://www.daimlerchrysler.com/Projects/c2c/channel/documents/682160_hightechrep_loc_01_2005_filmcoating_g.pdf
  • a radiation-curable film is produced in several separate production steps. Critical to the process produced there is that drying and curing is separated. Thermoforming and UV curing are also carried out in two separate steps.
  • the object of the present invention was to provide a simplified curing process with which radiation-curable films can be shaped and cured at reduced equipment costs.
  • the object has been achieved by a method for producing film-coated objects, comprising at least the steps
  • the method according to the invention can be carried out with simplified apparatus measures in comparison with the prior art and requires a lower energy requirement.
  • drying step 2) may additionally be carried out at least partly in the same apparatus.
  • step 5 it is additionally possible to carry out step 5) at least partially in the same apparatus.
  • the cover layer is radiation-curable according to the invention. Therefore, a radiation-curable composition containing free-radically or ionically curable groups (short-curing groups) is used as the cover layer. Preference is given to free-radically curable groups.
  • the radiation-curable layer may be colored or colorless.
  • the radiation-curable composition is transparent to the radiation used in curing step 4). Even after curing, the topcoat is preferably transparent, i. it is a clearcoat.
  • An essential component of the radiation-curable compositions is the binder, which forms the topcoat by film formation.
  • the radiation-curable composition contains at least one binder selected from the group consisting of i) polymers having ethylenically unsaturated groups with an average molecular weight M n of more than 2000 g / mol
  • Examples of compounds i), ii) and iii) can be found in WO 00/63015, there especially from page 2, line 27 to page 6, line 15, WO 2005/080484, there especially from page 2, line 39 to page 17 , Line 22, and WO 2005/1 18689, there particularly from page 2, line 40 to page 20, line 14, to which reference is hereby made by reference.
  • Preferred binders are those as described in WO 2005/080484, there especially from page 2, line 39 to page 17, line 22.
  • the binder has a glass transition temperature (T 9 ) below 60 ° C, preferably below 40 ° C, more preferably below 20 0 C.
  • T 9 glass transition temperature
  • the T 9 does not fall below a value of -60 ° C.
  • the glass transition temperature T 9 of the binder is determined by the DSC method (Differential Scanning Calorimetry) according to ASTM 3418/82 at a heating rate of 10 ° C./min.
  • ethylenically unsaturated groups are more than 2 mol / kg, preferably more than 2 mol / kg to 8 mol / kg, more preferably at least 2.1 mol / kg to 6 mol / kg, very particularly preferably 2, 2 to 6, especially 2.3 to 5 and especially 2.5 to 5 mol / kg of the binder (solid), ie without water or other solvents.
  • the radiation-curable compositions may contain further constituents. Particular mention may be made of photoinitiators, leveling agents and stabilizers.
  • photoinitiators for outdoor applications, i. for coatings which are directly exposed to daylight, the masses contain in particular UV absorbers and free-radical scavengers.
  • a post-curing accelerator e.g. Tin octoate, zinc octoate, dibutyltin laureate or diaza [2.2.2] bicyclooctane.
  • Photoinitiators can be, for example, photoinitiators known to the person skilled in the art, for example those in “Advances in Polymer Science", Volume 14, Springer Berlin 1974 or in US Pat KK Dietliker, Chemistry and Technology of UV and EB Formulation for Coatings, Inks and Paints, Volume 3; Photoinitiators for Free Radical and Cationic Polymerization, PKT Oldring (Eds), SITA Technology Ltd, London.
  • the photoinitiators are particularly preferably selected from the group consisting of 2,4,6-trimethylbenzoyldiphenylphosphine oxide (Lucirin® TPO from BASF AG), ethyl 2,4,6-trimethylbenzoylphenylphosphinate (Lucirin® TPO L from BASF AG), bis (2 , 4,6-trimethylbenzoyl) -phenylphosphine oxide (Irgacure® 819 from Ciba Spezialitätenchemie) and bis (2,6-dimethoxybenzoyl) -2,4,4-trimethylpentylphosphine oxide-containing mixtures, such as those containing 2-hydroxy-2-methyl- 1-phenyl-propan-1-one (Irgacure® 1700 from Ciba Spezialitätenchemie) or with 1-hydroxycyclohexyl-phenylketone (Irgacure® 1800 from Ciba Spezi Rundenchemie).
  • UV absorbers convert UV radiation into heat energy.
  • Known UV absorbers are hydroxybenzophenones, benzotriazoles, cinnamic acid esters and oxalanilides.
  • Radical scavengers bind intermediately formed radicals.
  • Significant radical scavengers are sterically hindered amines, which are known as HALS (Hindered Amine Light Stabilizers).
  • the content of UV absorbers and radical scavengers is generally 0.1 to 5 parts by weight, more preferably 0.5 to 4 parts by weight, based on 100 parts by weight of the radiation-curable compounds.
  • the radiation-curable composition may also contain compounds which contribute to curing by other chemical reactions.
  • compounds which contribute to curing by other chemical reactions For example, Polyisocyanates which crosslink with hydroxyl or amine groups.
  • the radiation-curable composition may be free from water and solvents, as a solution or as a dispersion.
  • the above radiation-curable compositions form the cover layer.
  • the layer thickness (after drying and curing) is, for example, 1 to 1000 ⁇ m, preferably 10 to 100 ⁇ m.
  • the substrate layer serves as a carrier and is intended to ensure a permanently high toughness of the overall composite.
  • the substrate layer preferably consists of a thermoplastic polymer, in particular polymethyl methacrylates, polybutyl methacrylates, polyethylene terephthalates, polybutylene terephthalates, polyvinylidene fluorides, polyvinyl chlorides, polyesters, polyolefins, acrylonitrile ethylene propylene diene glycol copolymers (A-EPDM), polyetherimides, polyether ketones, polyphenylene sulfides, polyphenylene ethers or mixtures thereof.
  • a thermoplastic polymer in particular polymethyl methacrylates, polybutyl methacrylates, polyethylene terephthalates, polybutylene terephthalates, polyvinylidene fluorides, polyvinyl chlorides, polyesters, polyolefins, acrylonitrile ethylene propylene diene glycol copolymers (A-EPDM), polyetherimides, polyether ketones, polyphenylene sulfides, polypheny
  • polyethylene polypropylene, polystyrene, polybutadiene, polyesters, polyamides, polyethers, polycarbonate, polyvinyl acetal, polyacrylonitrile, polyacetal, polyvinyl alcohol, polyvinyl acetate, phenolic resins, urea resins, melamine resins, alkyd resins, epoxy resins or polyurethanes, their block or graft copolymers and blends of it.
  • ABS ABS
  • AES AMMA
  • ASA ASA
  • EP EPS
  • EVA EVAL
  • HDPE HDPE
  • LDPE LDPE
  • MABS MABS
  • MBS MF
  • PA PA6, PA66
  • PAN PB
  • PBT PBTP
  • PC PE
  • PEC PEEK
  • PEI PEK
  • PEP PES
  • PET PETP
  • PF PI
  • PIB PMMA
  • POM POM
  • PP PPS
  • PS PSU
  • PUR PVAC
  • PVAL PVAC
  • PVAL PVDC
  • PVP UP plastics
  • SAN SAN
  • SMS UF
  • UP plastics abbreviated to DIN 7728
  • aliphatic polyketones abbreviated to DIN 7728
  • Particularly preferred substrates are polyolefins, e.g. PP (polypropylene) which may optionally be isotactic, syndiotactic or atactic and optionally non-oriented or oriented by uni- or bis-axial stretching, SAN (styrene-acrylic copolymer), PC (polycarbonate), PMMA (polymethylmethacrylate ), PBT (poly (butylene terephthalate) e), PA (polyamides), ASA (acrylonitrile-styrene-acrylic ester)
  • PP polypropylene
  • SAN styrene-acrylic copolymer
  • PC polycarbonate
  • PMMA polymethylmethacrylate
  • PBT poly (butylene terephthalate) e
  • PA polyamides
  • ASA acrylonitrile-styrene-acrylic ester
  • ABS acrylonitrile-butadiene-styrene copolymers
  • Particularly preferred are PP, SAN, ABS, ASA and blends of ABS or ASA with PA or PBT or PC.
  • ASA in particular according to DE 19 651 350 and the blend ASA / PC and SAN.
  • PMMA polymethyl methacrylate
  • the layer thickness is preferably 50 ⁇ m up to 5 mm. Particularly preferred, especially when the substrate layer is back-injected, is 100 to 1000 ⁇ m, in particular 100 to 500 ⁇ m.
  • the polymer of the substrate layer may contain additives.
  • fillers or fibers come into consideration.
  • the substrate layer can also be colored and thus simultaneously serve as a coloring layer.
  • the film may contain, in addition to the cover layer A) and the substrate layer D), further layers.
  • thermoplastic intermediate layers C or further layers of thermoplastic material (thermoplastic intermediate layers) B) which reinforce the film or serve as separating layers, as is known, for example, from WO 2004/009251.
  • Thermoplastic interlayers may consist of the polymers listed above under "Substrate Layer”.
  • PMMA Polymethyl methacrylate
  • Polyurethane is also mentioned.
  • Coloring layers may also consist of the polymers mentioned. They contain dyes and / or pigments which are distributed in the polymer layer.
  • the number of layers following the substrate can be up to 20 layers. Preferred are up to 6, more preferably up to 4.
  • the layers may, for example, also be coated over the entire surface and imagewise, e.g. as a print image or as layer thickness reliefs, i. be applied as differently surface-wetting, light-absorbing, refractive, light-conducting, flow or heat-conducting relief structures. These layers can be protected by a UV-curable topcoat.
  • a preferred film has e.g. following layer structure, whereby the alphabetical order corresponds to the spatial arrangement:
  • thermoplastic intermediate layer (optional)
  • coloring intermediate layer (optional)
  • Another preferred film has e.g. following layer structure, whereby the alphabetical order corresponds to the spatial arrangement:
  • an adhesive layer may be applied if the film is to be adhered to an object.
  • a protective layer e.g. a release liner, which prevents accidental curing, be applied.
  • the thickness can e.g. 50 to 100 microns.
  • the protective layer may e.g. polyethylene, polypropylene, polycycloolefins, silicone, polyfluorocarbons or polytherephthalate.
  • the peel-off film can be removed before the deformation step. It must be removed if the protective film itself is not sufficiently deformable.
  • the protective film can be smooth or textured.
  • the latter serves, for example, for impressing a structure on the topcoat layer.
  • the irradiation can also take place through the protective layer, for which purpose the protective layer must be transparent in the wavelength range of the irradiation.
  • the total thickness of the composite film is preferably 50 to 1000 microns.
  • the preparation of a composite of layers B) to D) may be e.g. by coextrusion of all or some of these layers.
  • the individual components are made to flow in extruders and brought into contact with one another via special devices such that the films result in the layer sequence described above.
  • the components can be coextruded through a slot die. This procedure is in EP-A2-0 225 500 explained.
  • adapter coextrusion can be used.
  • the composite may be prepared by conventional methods, e.g. by coextrusion as described above or by lamination of the layers, e.g. in a heatable gap, are produced. First of all, such a composite can be produced from the layers, with the exception of the cover layer, and then the cover layer can be applied by customary methods.
  • the preparation of the radiation-curable composition by mixing the components and the production of the cover layer can be carried out in one operation.
  • thermoplastic components e.g. the above-mentioned unsaturated polymers i) of the saturated polymers under iii) (see above) are first melted in the extruder.
  • the necessary melting temperature depends on the particular polymer.
  • the further constituents in particular radiation-curable, low molecular weight compounds ii) (see above) can be added.
  • the compounds act as a plasticizer, so that the temperature at which the mass is present as a melt, lowers.
  • the temperature upon addition of the radiation-curable compound must in particular be below a so-called critical temperature at which thermal curing of the radiation-curable compound takes place.
  • the critical temperature is readily determined by calorimetric measurement, i. determine the heat absorption with increasing temperature according to the above-described determination of the glass transition temperature.
  • the radiation-curable composition is then extruded directly as a topcoat onto the existing composite or, in the case of coextrusion, with layers of the composite. By extrusion, the composite layer film is obtained immediately.
  • the radiation-curable composition may preferably be easily prepared, e.g. by spraying, spraying, brushing, filling, knife coating, brushing, rolling, rolling, pouring, laminating, etc. are applied to the substrate layer or the composite and optionally dried.
  • the binder and / or the radiation-curable composition can also be applied in molten form.
  • the coating compositions can be prepared by a wide variety of spraying methods, such as air pressure, airless or electrostatic spraying using single or Two-component spray systems, but also by spraying, filling, doctoring, brushing, rolling, rolling, casting, lamination, injection molding or coextrusion one or more times be applied.
  • spraying methods such as air pressure, airless or electrostatic spraying using single or Two-component spray systems, but also by spraying, filling, doctoring, brushing, rolling, rolling, casting, lamination, injection molding or coextrusion one or more times be applied.
  • the coating thickness is generally in a range of about 3 to 1000 g / m 2 and preferably 10 to 200 g / m 2 .
  • the cover layer is radiation crosslinkable.
  • the composite foil is thermoelastic deformable.
  • a protective layer (protective film, release liner) can be deposited on the cover layer immediately after the composite film has been produced.
  • the protective film also makes it possible to equip non-blocking topcoat layers in a stackable or rollable manner. Furthermore, it can serve for smoothing or vice versa to impose a structure on the surface.
  • the composite layer film has a high gloss and good mechanical properties. Crack formation is barely noticeable.
  • the extensibility of the composite layer film is preferably at least 100% based on the unstretched state (at 140 ° C., at a thickness of 50 ⁇ m).
  • the stretching may be carried out at different temperatures up to 250 0 C, preferably between 20 0 C and 200 ° C.
  • Containing coating compositions solvent may, after application, at an elevated temperature tur, for example at 40-250 0 C, preferably 40-150 ° C and especially at 40 to 100 ° C to be dried. This is limited by the thermal stability of the film.
  • the drying and / or thermal treatment can also be carried out in addition to or instead of the thermal treatment by NIR radiation, wherein NIR radiation here electromagnetic radiation in the wavelength range of 760 nm to 2.5 microns, preferably from 900 to 1500 nm is designated.
  • the film can be stored without partial curing (as described in EP-A2 819 516) until later application. An adhesion or deterioration of the performance properties until later application is not or hardly observed.
  • the film is applied after its appropriate shaping on a three-dimensionally shaped substrate
  • the flat film can be shaped in a suitable manner, for example by injection molding, backfoaming, backfilling or pressing in of different materials, based on plastics, wood, paper, metal, ceramic, etc .; whereby the components result.
  • the paint film is preferably heated to a temperature in the range of the glass transition temperature of the paint film.
  • the preferred process temperature of the impression is in the range of 20 ° C. to 250 ° C., more preferably 80 ° to 190 ° C.
  • the film thus heated is deep-drawn and wrinkle-free over a deep-drawing die as a die by means of a vacuum or pressure applied to the back ,
  • the thermoformed paint film can then be punched out or cut out according to a desired circumferential contour.
  • this lacquer film is radiation-cured after deep-drawing or after the back-injection according to step 5).
  • this is introduced into the mold on the tool side facing the underside of the paint film.
  • the object itself forms a molded part of the mold, in particular in the form of a forming punch.
  • An object is to be understood as meaning any two-dimensional and particularly three-dimensional products, in particular modules, parts of assemblies or components for composite parts, which are in their intended geometric form.
  • the materials of the objects include wood-based materials, ceramics, metals, plastics, foams and composite materials, in particular the usual in automotive body materials in the body area, as well as Baumaterialstoffmate- materials or generally plastic or glass housing or plastic or glass windows.
  • the paint film is heated to make it plastically deformable.
  • this also activates corresponding adhesive.
  • the suitable for the process paint films consist at least partially of thermoplastic polymers or plastics.
  • the paint film is heated at least over the glass transition temperature of its polymer components, so that the paint film is easily deformed.
  • the preferred process temperature of the impression is in the range from 20 ° C. to 250 ° C., more preferably 80 ° to 190 ° C., and can be adjusted before the actual impression or only during the impression.
  • the object which forms part of the mold may be preheated or not preheated, depending on the best adhesive strength of the film substrate composite.
  • the paint film is at least raised to the visible surfaces of the object. This process step is also referred to as thermoforming.
  • the object is used as a molding tool, for example as a forming die and moved into or through the film plane of the clamped paint film.
  • the paint film is applied evenly to the object.
  • the object remains in its position and the paint film is pressed by applying a pressing pressure at least on the visible surface of the object.
  • the pressing pressure can be effected in a known manner by an air overpressure, or by a molding tool complementarily shaped.
  • the film applied to the object is radiation-cured within the same apparatus.
  • the paint film is not only drawn over the field of view of the object, but also on the limiting edges and edges. In particular intended to conceal the cut edges of metallic objects.
  • the belt sheets pretreated, for example, in bodywork with corrosion protection or other coatings are used to produce the objects.
  • the band plates lose their coating at the cut edges and edges, which then leads to corrosion problems in the application. Final finishes with dye or effect finishes often no longer provide suitable corrosion protection.
  • the paint films applied in the manner described show excellent protection of the edges and edges.
  • the paint films are also particularly advantageous when there is a particular mechanical load from impact, impact or sanding on exposed areas of the components. It is z. As to think of stone chip protective films.
  • the coating can be carried out by adhering the film to the substrates.
  • the film is preferably provided with the adhesive layer E on the back side of the substrate layer.
  • objects are particularly suitable those of wood, plastic, foam, metal, glass, ceramics.
  • the deformed film is also radiation-cured within the same apparatus in which the deformation is carried out.
  • the radiation curing of the cover layer is preferably carried out after Tiefzieh accomplished. Aufziehvorgang as described under 3) and can in the case of deep drawing before or after the injection of the film, as described under 5), take place.
  • the surfaces thus obtained have advantages in surface quality. For example, there are fewer surface defects due to the formation of dust, and the mechanical and chemical resistances of the surfaces are generally better.
  • the radiation curing is carried out with high-energy light, eg UV light or electron beams.
  • the radiation curing can be carried out at higher temperatures. Preference is given to a temperature above the glass transition temperature T 9 of the radiation-curable binder.
  • the radiation preferably takes place on the cover layer side of the film. As a rule, it is only possible to irradiate through the substrate film D) if the substrate film D) and the optional intermediate layers B) and / or C) are transparent to the radiation used for radiation curing.
  • the radiation hardening takes place through the (thermoforming) mold, it is of course transparent to the radiation in question, for example of glass or plastic.
  • radiation curing of the outer layer A) preferably takes place only after detachment from the deep-drawing tool from the outer layer side, particularly preferably after further injection molding, as described under 5) and after detachment of the back-injected film from the outer layer Thermoforming tool.
  • the curing can also be carried out so that after applying the film to the object to achieve rapid pre-curing at temperatures up to 160 0 C, preferably between 60 and 160 0 C, thermally treated and then finally cured with electron beams or UV exposure under oxygen or preferably under inert gas.
  • Suitable radiation sources for radiation curing are, for example, low-pressure mercury lamps, medium-pressure lamps with high-pressure lamps and fluorescent tubes, impulse lamps, metal halide lamps, halogen lamps, LED spotlights, flash lamps and electronic flash devices, which radiation curing without photoinitiator is possible, or Excimerstrahler.
  • the radiation sources used are, for example, high-pressure mercury vapor lamps, lasers, pulsed lamps (flash light), halogen lamps or excimer radiators.
  • the radiation dose for UV curing which is usually sufficient for crosslinking, is in the range from 80 to 3000 mJ / cm 2 .
  • the radiation source is selected from the group consisting of high-pressure mercury lamps, low-pressure mercury lamps, halogen lamps and flash lamps, particularly preferably flashlamps.
  • Preferred high-pressure mercury lamps have power densities of the light source up to 400 W / cm lamp length and can be used even at higher temperatures, for example up to 300 0 C, which makes them particularly suitable geeigent for the application of the invention. Since these emitters in the spark ignition design require multi-minute starting times, often about 3 minutes, to become fully efficient, and because multiple switching cycles reduce the life of these lamps, high pressure mercury lamps are preferred in the context of this invention as shutter-closeable and thus switchable and yet permanent-burning spotlights used. Shortened start times have microwave-started, electrode-free lamps, these can also be used without closing covers.
  • Preferred low-pressure mercury lamps are switchable in the range of seconds. Their power density relative to the radiator length is considerably lower than that of the high-pressure mercury radiators, correspondingly longer lamp lengths and number of units as well as, if necessary, irradiation times must be taken into account. At temperatures above 100 0 C these emitters are not suitable due to a large power loss.
  • pulsed lamps preferably xenon flash lamps
  • Pulsed lamps for industrial or photographic applications briefly have very high power densities per flash (up to 100 kW). Usual power ranges are 30 W to 20 kW.
  • the emitted spectra cover a broad spectral range in the visible and ultraviolet spectrum.
  • Suitable flash lamps are described, for example, in WO-A-94/1123 and in EP-A-525340.
  • Particularly preferred are flash lamps with a light emission in the wavelength range between 200 and 900 nm and a maximum around 500 nm.
  • At the surface of the film at least 5 megalux per flash discharge should be achieved, preferably 10 -70 megalux.
  • the coupling of several flash lamps is preferred.
  • preferred flash lamps are also less powerful lamps in the range used in the photographic sector.
  • the curing of the paint films can take place by a plurality of lightning discharges, preferably by 1 to 20, more preferably by 1 to 5 flashes.
  • the pulsed radiators are short compared to other bulbs exposure times, so that the cycle times per coated part for deep drawing and coating with the heating, cooling and vacuum and ventilation processes, by the subsequent light curing is not or only slightly be extended by about 0 - 30 seconds.
  • the energy consumption is limited to the time of curing.
  • the lamps With mercury or high-pressure lamps, the lamps must be used to avoid minute-long switch-on and switch-off phases, which in each case also affect the life of the lamps, especially in the case of lamps containing electrodes, or the starter electrics of the lamps, in particular microwaves.
  • the distance of the flash lamps to the film surface is between 1 and 100 cm, preferably 5 to 50 cm.
  • the UV B and / or UV C components and other UV components are filtered out by filters in the lamp glass or reflector glass.
  • the irradiation may in a preferred embodiment, also in the absence of oxygen or oxygen-depleted atmosphere, for. B. at a Sauerstoffparti- al horr of less than 18 kPa, preferably 0.5 to 18 kPa, more preferably 1-15 kPa, most preferably 1 to 10 kPa and especially 1-5 kPa, or under an inert gas atmosphere, are performed , Suitable inert gases are preferably nitrogen, noble gases, carbon dioxide, water vapor or combustion gases.
  • the reduction of the oxygen partial pressure can also be done by lowering the ambient pressure.
  • the irradiation can be carried out by covering the coating mass with transparent media. Transparent media are z. As plastic films, glass or liquids, eg. B. water. Particular preference is given to irradiation in the manner described in DE-A1 199 57 900.
  • barrier layers may be films of hydrophobic or hydrophilic waxes or liquids that have a barrier to atmospheric oxygen
  • a peelable protective film provides a barrier to the topcoat to be cured, which protects the topcoat from exposure to oxygen.
  • crosslinkers which cause an additional thermal crosslinking, for example isocyanates, eg simultaneously or after the radiation curing, the thermal crosslinking by increasing the temperature to up to 150 0 C, preferably up to 130 0 C optionally carried out under the influence of atmospheric moisture become.
  • the thermal crosslinking can also take place without additional heating for a post-curing time of a few hours to days.
  • a film thermoformed in step 3) can preferably be back-injected or a flat film can be shaped in a suitable manner, for example by injection molding, backfoaming, backfilling or pressing different materials based on plastics, wood, paper, metal, ceramic, etc .; whereby the components result.
  • the deep-drawn films are preferably treated as follows:
  • the film is preferably deep-drawn in a deep-drawing tool and the back of the sub- backslattered with plastic compound.
  • the plastic compound is, for example, polymers which have been listed above in the description of the substrate layer or, for example, polyurethane, in particular polyurethane foam.
  • the polymers may contain additives, in particular, for example, fibers, such as glass fibers, vegetable fibers or fibers.
  • the stamped and deep-drawn paint film is placed in an injection mold and back-injected with a plastic, backfoamed or backfilled.
  • the elastic paint film during injection molding can be pressed simultaneously against the negatively worked to the desired shape of the article boundaries of the injection mold. After curing of the back-injected plastic, the finished decorated object is removed from the injection mold.
  • this removed object is then cured by radiation on the cover layer A).
  • the films can be used for coating two- and three-dimensional moldings. Any shaped bodies are accessible.
  • the films are particularly preferably used for coating moldings, which require very good surface properties, high weathering resistance and good UV resistance.
  • the resulting surfaces are also very scratch-resistant, chemical-resistant, weather-resistant and adherent, so that destruction of the surfaces by weathering, scratching or peeling off the surfaces is reliably prevented.
  • molded articles for outdoor use outside buildings are a preferred field of application.
  • the films are used to coat automotive parts, e.g. Fenders, door linings, bumpers, spoilers, aprons, as well as exterior mirrors are possible.
  • the films are excellent for making decorative and / or protective coatings on vehicles, including aircraft, ships, rail vehicles, powered vehicles and motor vehicles, and parts thereof, indoor and outdoor structures and parts thereof, doors, windows and Furniture and in the context of the industrial painting of glass hollow bodies, coils, containers, packaging, small industrial parts, such as nuts, screws or hubcaps, optical components, electrical components, such as winding goods, including coils and stators and rotors for electric motors, mechanical components and components for white goods, including household appliances, boilers and radiators.
  • the films of the coating of three-dimensional components in particular add-on parts for the production of automobile bodies. That's why preferably suitable for automotive bodies coatings for the production of the films used, however, must have the flexibility required for the purposes of the invention.
  • the object represents a component for a vehicle body.
  • vehicle bodies include, in particular, small parts which are fitted into larger body surfaces, for example tank covers, boot linings, transverse or longitudinal columns or beams, door handles and the like.
  • an exact and consistent quality of color and effect is necessary on the objects, which may not deviate from the surrounding body.
  • the paint films and the application method of the invention over the conventional paint show special advantages.
  • automotive interior components such as e.g. Dashboard trim or car door linings
  • automotive interior components such as e.g. Dashboard trim or car door linings
  • the film is preferably covered with a structured protective film, for example to obtain a leather look, and cured therethrough.
  • housing shells for devices in particular in the household sector such as refrigerators, washing machines and dishwashers, coffee machines, microwave ovens, computers, telephones, PDA devices, toys, entertainment electronic devices, musical instruments, sports equipment or for commercially used devices.
  • a deep-drawable, PERMASkinfolie® (BASF Aktiengesellschaft, Ludwigshafen) is coated with a UV-curable clearcoat consisting of Laromer® UA 9047 V (radiation-curable one-component urethane acrylate based on hexamethylene diisocyanate, BASF Aktiengesellschaft, Ludwigshafen) and, as photoinitiator mixture, 3% of 1-hydroxycyclohexyl-phenylketone and 0.5% of 2,4,6-T ⁇ methylbenzoyldiphenylphosphinoxid (Lucirin® TPO, BASF Aktiengesellschaft, Ludwigshafen) based on non-volatile components by doctor blade application for a dry film thickness of 50g / m 2 coated. The drying is carried out at 50 0 C for 15 min.
  • thermoforming apparatus which consists of a lower part for receiving a substrate plate, said retractable frame and a de 45 cm high dekel, all parts of the plant are to each other vacuum-tight sealable.
  • About the bottom and lid can be independently evacuated and fumigated.
  • the lid contains IR lamps for heating and an IR temperature detector for temperature measurement and control.
  • the film is heated to about 180 0 C and collected by negative pressure in the lid, so that arises space for the sub stratplatte. Subsequently, we closed the entire apparatus with the base plate containing the substrate plate. By vacuum drawing in the region between the film and the substrate, the film is drawn bubble-free on the substrate.
  • the substrate is a profiled MDF board with a maximum height of 1, 9 cm and an area of 50cm * 60 cm.
  • the apparatus also contains 30 flashlamps in the aluminum-lined lid (illuminant length 46 mm, lamp spacings 10 cm (commercially available photoflash lamps eg used for MECABLITZ 45 CL 1 (Metz GmbH, Zirndorf)) for UV irradiation Nitrogen is passed over the applied film and the film is exposed to 100 ° C., which is achieved during cooling and gassing of the film applied to the wood panel, with 3 flashes at intervals of 5 seconds total cycle time is 70 seconds and is not prolonged by the exposure.
  • UV flash lamps (lamp length approx 190 mm, max power 4000 J) are used in the flood head flash head in conjunction with the UV generator 3000 Ws from Visit GmbH & Co. CO KG, Würzburg. 5 flash lamps are used to cure 2 m 2 of surface at a lamp-substrate distance of about 30 cm.
  • Comparative Examples 3 and 4 Examples 1 and 2 are repeated, each time taking place outside the deep-drawing apparatus.
  • a container of surface 90 cm * 1 10 cm and a depth of 100 cm lined with aluminum surfaces is filled with 3 kg of dry ice.
  • a residual oxygen content of about 1 percent by volume is achieved.
  • the still about 100 0 C hot substrate is suspended so that the lid containing the flash lamps from Experiments 1 and 2 have a comparable distance of 30 cm between the lamps and the film surface.
  • the scratch resistance of the paint surfaces was measured by measuring the loss of gloss (measuring angle 20 °) after scratching with 10 and 50 double strokes (DH) with a Scotch Brite TM nonwoven (3M), which was loaded by a 500 g hammer.
  • the surfaces of Examples 1 and 2 show less interference by dust and are scratch resistant:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne un procédé simplifié de revêtement d'objets par un film au moyen d'un durcissement par rayonnement.
EP07821198A 2006-10-13 2007-10-11 Procédé de revêtement d'objets par un film Withdrawn EP2097258A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07821198A EP2097258A2 (fr) 2006-10-13 2007-10-11 Procédé de revêtement d'objets par un film

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06122227 2006-10-13
EP07821198A EP2097258A2 (fr) 2006-10-13 2007-10-11 Procédé de revêtement d'objets par un film
PCT/EP2007/060831 WO2008043812A2 (fr) 2006-10-13 2007-10-11 ProcÉdÉ de revÊtement d'objets par un film

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EP2097258A2 true EP2097258A2 (fr) 2009-09-09

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US (1) US20100021737A1 (fr)
EP (1) EP2097258A2 (fr)
JP (1) JP2010505619A (fr)
KR (1) KR20090068269A (fr)
CN (1) CN101522418A (fr)
BR (1) BRPI0720190A2 (fr)
WO (1) WO2008043812A2 (fr)

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EP2218570A1 (fr) * 2009-01-26 2010-08-18 VKR Holding A/S Toiture composants ayant formées sous vide des matériaux thermodurcissables et des méthodes de fabrication connexes
DE102009021610A1 (de) * 2009-05-15 2010-11-18 Airbus Deutschland Gmbh Luftfahrzeug mit lackierter Außenoberfläche und Dekorfolie
DE102009022542A1 (de) * 2009-05-25 2010-12-09 Leonhard Kurz Stiftung & Co. Kg Mehrschichtfolie
DE102010002766A1 (de) * 2010-03-11 2011-09-15 Lisa Dräxlmaier GmbH Verfahren zum Kaschieren einer flexiblen Materiallage auf einen dreidimensional konturierten Träger sowie Vorrichtung hierfür
DE102010003440A1 (de) 2010-03-30 2011-10-06 Lisa Dräxlmaier GmbH Verfahren zum Herstellen von Innenverkleidungsteilen durch Kaschieren sowie Innenverkleidungsteil
US8513321B2 (en) 2010-11-05 2013-08-20 Ppg Industries Ohio, Inc. Dual cure coating compositions, methods of coating a substrate, and related coated substrates
US8901198B2 (en) 2010-11-05 2014-12-02 Ppg Industries Ohio, Inc. UV-curable coating compositions, multi-component composite coatings, and related coated substrates
JP6296701B2 (ja) * 2012-10-15 2018-03-20 住友化学株式会社 電子デバイスの製造方法
US9190039B2 (en) * 2013-03-14 2015-11-17 D'addario & Company, Inc. Radiation curable drumhead membrane
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WO2008043812A2 (fr) 2008-04-17
CN101522418A (zh) 2009-09-02
WO2008043812A3 (fr) 2008-07-17
KR20090068269A (ko) 2009-06-25
US20100021737A1 (en) 2010-01-28
JP2010505619A (ja) 2010-02-25

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