EP3752296A2 - Methods for producing a structure on a surface - Google Patents
Methods for producing a structure on a surfaceInfo
- Publication number
- EP3752296A2 EP3752296A2 EP20724447.6A EP20724447A EP3752296A2 EP 3752296 A2 EP3752296 A2 EP 3752296A2 EP 20724447 A EP20724447 A EP 20724447A EP 3752296 A2 EP3752296 A2 EP 3752296A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- base layer
- droplet
- workpiece
- droplets
- liquid
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 109
- 238000005507 spraying Methods 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000000053 physical method Methods 0.000 claims description 3
- 238000004220 aggregation Methods 0.000 claims description 2
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- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims 1
- 238000007639 printing Methods 0.000 description 19
- 239000002023 wood Substances 0.000 description 15
- 239000004922 lacquer Substances 0.000 description 10
- 239000011093 chipboard Substances 0.000 description 8
- 238000003848 UV Light-Curing Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 7
- 238000000576 coating method Methods 0.000 description 6
- 238000001723 curing Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000000976 ink Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 241001070947 Fagus Species 0.000 description 4
- 235000010099 Fagus sylvatica Nutrition 0.000 description 4
- 238000004049 embossing Methods 0.000 description 4
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
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- 239000012188 paraffin wax Substances 0.000 description 3
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- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 244000040384 Quercus garryana Species 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D5/00—Surface treatment to obtain special artistic surface effects or finishes
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/001—Cylindrical or annular brush bodies
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/06—Brush bodies; Handles integral with brushware in the form of tapes, chains, flexible shafts, springs, mats or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
-
- 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
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- 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
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
-
- 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
- B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
- B05D1/42—Distributing applied liquids or other fluent materials by members moving relatively to surface by non-rotary members
-
- 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
- B05D3/007—After-treatment
-
- 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
- B05D3/04—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 exposure to gases
-
- 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
- B05D3/12—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 mechanical means
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
- B08B5/023—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/003—Devices or means for dressing or conditioning abrasive surfaces using at least two conditioning tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/19—Single-purpose machines or devices for grinding plane decorative patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/16—Surface shaping of articles, e.g. embossing; Apparatus therefor by wave energy or particle radiation, e.g. infrared heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/222—Removing surface-material, e.g. by engraving, by etching using machine-driven mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/005—Removing selectively parts of at least the upper layer of a multi-layer article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/02—Superimposing layers
- B44C3/025—Superimposing layers to produce ornamental relief structures
-
- 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
- B05D3/06—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 exposure to radiation
- B05D3/061—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 exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0057—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by ultraviolet radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C2059/027—Grinding; Polishing
Definitions
- the present invention relates to a method for producing a structure on a surface of a flat workpiece and to a device for carrying out the method.
- a decoratively coated wood-based panel is state of the art and is used in a wide variety of applications, e.g. for making furniture, from
- MDF medium density fibreboard
- HDF high density
- Fiberboard as well as cement fiberboard and cement-bonded chipboard, e.g. in thicknesses of approx. 3 to 50 mm can be used for various applications.
- decorative coating e.g. a wood replica or a
- Tile replication for stone-like laminate flooring also preserving a structure in the surface.
- this is e.g. manufactured in a melamine coating process using an embossing die.
- embossing die For example, a with a
- the result is a 12 mm thick chipboard, which is coated with a beech look.
- On the surface with the beech imitation optics result then through the embossing plate structures with a depth of usually 20 gm up to 150 gm or 200 gm.
- synchronous pores are used, in which the embossing plate has a structure that is used synchronously with the printed wood look.
- a printed knothole is actually perceptibly deeper than the rest of the printed wood look standing next to it.
- DE 10 2009 044 802 A1 discloses a structuring method in which a surface structure is built up by means of paint droplets that are released onto the surface of a workpiece.
- a structure is created by an envelope curve that is given by the surface of the entire droplet.
- the workpiece is first coated with a liquid base layer.
- a structure is introduced into the base layer by means of droplets that are sprayed onto the base layer, for example with an inkjet printer, in that the droplets displace the base layer when they strike it.
- the base layer is applied fixed with a suitable method so that the structure therein is also fixed. The workpiece is thus provided with a structure.
- Another method for producing a decorative surface is known from DE 10 2017 113 035 A1.
- the surface created in this way is designed with different degrees of gloss.
- a second lacquer layer is applied here to a first lacquer layer with which a surface of a workpiece has been coated, the second lacquer layer being applied in droplet form and differing in its degree of gloss from the first lacquer layer after curing.
- a special embodiment of the method disclosed here also includes steps in which the surface is structured.
- edges of the digitally introduced structure, or the introduced depressions are rather rounded and not, as desired, very sharp-edged. Especially when recreating a natural one
- Wood structure or wood pore optics are very sharp-edged pores desired, in which the measured depth difference between the highest and the deepest point in the surface, i.e. in a direction perpendicular to the surface of the workpiece, takes place over a very short spatial extent, i.e. parallel to the surface of the workpiece.
- this depth difference of 100 ⁇ m occurs over a spatial extent of 40 to 60 ⁇ m, for example, while in the case of a sharp-edged pore this depth difference should be reached within a spatial extent of more than 10 to 20 ⁇ m.
- the object of the present invention is to solve the above-mentioned problems and, in particular, to create a possibility of introducing sharper structures in comparison with known methods.
- the sprayed-on droplets remain in the liquid base layer like a kind of “placeholder” until the liquid base layer has hardened, and after hardening has taken place, they are removed again using different methods. This prevents a structure created by the sprayed-on droplets from "flowing" again before the liquid base layer hardens or the sharp edges of the pore from decreasing due to the flowing of the base layer before hardening.
- a method for producing a structure on a surface of a workpiece is provided with the following steps:
- the at least one droplet penetrating the liquid base layer at least partially, preferably completely;
- a method for producing a structure on a surface of a workpiece with the following steps is also provided according to the invention:
- Both methods can preferably also be carried out in combination, so that according to the invention a method with the following steps is also provided:
- Base layer penetrates at least partially, preferably completely;
- the base layer is preferably based on a digital template, which is preferably matched to a decorative image.
- the decorative image is preferably located on the workpiece, being covered by the liquid base layer and / or the droplets.
- the base layer and / or the droplets are then preferably designed such that they are at least partially transparent when they have been fixed so that the decorative image is visible. In this way it is achieved that an arrangement of decorative image and structure that is as synchronous as possible is achieved. For example, a structure of a knothole can be adapted very well to an image of a knothole.
- a decorative image can also be arranged on the fixed base layer.
- the at least one droplet preferably solidifies on contact with the workpiece and / or the base layer or it preferably takes a solid one
- the at least one droplet can also be fixed in a separate step or together with the base layer.
- the fixing of the base layer or the droplets can preferably be equated with their hardening.
- the base layer and / or the at least one droplet preferably also have a curable material which, particularly preferably, can be cured or fixed by UV radiation and / or by drying.
- the base layer and the at least one droplet are made of different materials, to the effect that the base layer in one
- Curing process cures stronger than the at least one droplet.
- At least one depression By spraying the at least one droplet into the previously applied, liquid base layer, at least one depression is preferably made, the at least one depression preferably being completely filled by the at least one droplet.
- the geometry of the at least one depression can be influenced by varying the momentum or the speed of the at least one droplet and / or by varying the delivery volume or the mass of the at least one droplet.
- the at least one droplet is sprayed onto the surface of the workpiece before the application of the base layer, a depression is formed in the base layer in that the at least one droplet occupies a space
- the structure in the base layer is preferably through the at least one
- Wood or tile decors or other decorative structures can be formed, for example, by arranging several depressions or also by connecting several depressions.
- the layer thickness of the base layer preferably changes at the point at which the at least one droplet was sprayed on.
- a plurality of droplets are preferably placed one above the other at the same spatial location in the liquid base layer and / or on the workpiece, so that a composite droplet is produced before the base layer is applied and / or before it is fixed.
- a further processing step preferably takes place before the at least one droplet is sprayed on, in which the base layer is solidified to the extent that the base layer has a higher viscosity than when it was applied to the workpiece, but has not yet solidified.
- This can be done, for example, by drying or cooling the base layer by means of a flow source such as a fan.
- heat can also be extracted from the base layer by exposing it to a reduced ambient temperature. It can thus advantageously be achieved that on the one hand the temperature of the base layer is reduced so that the at least one droplet hits a relatively cold base layer.
- a depression that has been made in the base layer by the at least one droplet is more stable until it is fixed than in the case of a base layer with a lower viscosity.
- the spraying or application of the at least one droplet onto the liquid base layer is preferably carried out by means of digital printing or inkjet printing technology.
- a digital print head or a digital nozzle bar is preferably used for this purpose.
- the at least one droplet is preferably sprayed on at a temperature of> 40 ° C, preferably> 60 ° C, particularly preferably> 90 ° C, with the liquid base layer and / or the workpiece having a temperature of ⁇ 40 ° C, preferably ⁇ 35 ° C, particularly preferably ⁇ 30 ° C.
- the lowest possible temperature of the base layer and / or workpiece preferably accelerates the cooling, particularly preferably the solidification, of the at least one droplet.
- the solidification of the at least one droplet preferably takes place on contact with the base layer and / or with the workpiece within less than 8 seconds, preferably within less than 3 seconds, particularly preferably within less than 0.5 seconds.
- the melting point of the at least one droplet is preferably above the temperature of the liquid base layer with which it comes into contact. In this way the at least one droplet is not due to the
- the at least one droplet is preferably at least partially removed by means of mechanical and / or chemical and / or physical methods, with material of the base layer also optionally being removed.
- the at least one droplet is preferably liquefied again or at least partially liquefied by means of a solvent after the base layer has been fixed. It can then be removed from the base layer, particularly preferably by suction.
- Mechanical methods can be understood to mean erosive methods. For example, this can be understood to mean the use of a grinding or planing method, whereby the material of the base layer and / or of the at least one droplet is removed.
- it can also be understood to mean methods that use a medium to remove the material.
- Sandblasting to be treated. When removed by abrasives
- a continuously operating sanding machine as is typically used for sanding lacquer on coated chipboard for the furniture sector.
- Manufacturers of such lacquer sanding machines are e.g. the companies Heesemann (Bad
- the base layer is preferably removed to a certain depth so that the at least one droplet, if it has solidified, is then exposed and preferably protrudes from the base layer.
- the at least one droplet can easily be removed by the action of physical or mechanical force, for example by suction or brushing.
- the at least one depression formed by the at least one droplet has a sharply sloping edge, whereby the initially required sharpness of the structure is achieved can be.
- the at least one solidified droplet is preferably at least partially liquefied by reheating before and / or during the at least partial removal, and is thus removed from or from the base layer.
- the removal takes place preferably by means of physical methods, such as suction, evaporation or also by taking up or sucking up the at least one liquid
- Droplet with a different material If the at least one droplet is not solidified or fixed in the base layer, but is in liquid form, then it can that at least one droplet is removed in the same way. There is only no need to liquefy the at least one droplet again beforehand.
- Removal of the at least one droplet can also include chemical methods or be carried out by means of a chemical method.
- part of the base layer and / or of the at least one droplet can be by means of
- Chemicals are liquefied and then removed in liquid form.
- particularly suitable material mixtures preferably with a high proportion of more than 30% isophoronediamine, there is good water solubility, so that the droplets can be washed out of the fixed base layer again using water.
- the at least one droplet preferably consists of a material
- the at least one droplet can in a special embodiment contain water or consist purely of water.
- the liquid base layer preferably surrounds the at least one droplet as soon as it is on or in the base layer or as soon as the base layer is applied to the surface of the workpiece with droplets already sprayed on, such that an opening remains in the base layer which has a smaller area has, as a perpendicular projection of the at least one droplet vertically upwards.
- the liquid base layer completely encloses the at least one droplet. The at least one droplet is thus included in the base layer. If the at least one droplet is sprayed onto the liquid base layer, the at least one droplet is surrounded or enclosed by the liquid base layer subsequently flowing around it.
- the spraying of several droplets onto the liquid base layer can preferably do so take place that depending on the delivery parameters of the droplets, such as
- Droplet velocity, droplet volume, etc. some penetrate into the base layer and become enclosed by it, with others being partly or not enclosed.
- the at least one droplet is preferably at least partially removed by first mechanical removal, preferably from 1 to 50 ⁇ m, preferably 5 to 10 ⁇ m, of the hardened base layer, particularly preferably by means of a grinding device, optionally followed by mechanical brushing out of the at least one droplet thus exposed .
- the at least one droplet is at least partially removed by thermal heating and suction of the at least one then re-liquefied droplet.
- the base layer is preferably fixed in such a way that, after fixing the
- Base layer the surface of the fixed base layer due to the at least one droplet remaining in the base layer no larger unevenness than max. Has 20 pm.
- the base layer is preferably fixed in such a way that an area containing the
- the degree of hardness can preferably be determined with a "Hamberger plane”. A tip is pressed onto a workpiece with a force of 0.5 to 5 N and a scratch test is then carried out. The result is then visually assessed. The degrees of hardness can go through
- Droplets are influenced, so that, for example, different degrees of hardness are achieved during the polymerization of these materials.
- the at least one droplet preferably has after curing or
- Fixation in the base layer has a different degree of gloss than the hardened one Base layer on.
- the at least one droplet is to remain at least partially in the base layer and thus an introduced depression is to be provided with a different degree of gloss than the surrounding base layer.
- the at least one droplet could only be liquefied to a certain depth, which is less than the entire depth of the depression, and then sucked off. The non-liquefied part of the at least one droplet would remain in the depression in the base layer and here would provide the bottom of the depression with a different degree of gloss.
- the gloss level of the at least one droplet preferably deviates by at least 10 gloss units, preferably at least 20 gloss units, from the gloss level of the fixed base layer, the gloss units being measured according to DIN EN ISO 2813: 2015 02 at an angle of 60 °. This makes a visually clearly perceptible gloss effect recognizable.
- the setting of the degree of gloss can be varied during printing through the droplet size and / or the number of droplets per area or through the use of matting agents.
- the gloss measurement is carried out in accordance with DIN EN ISO 2813: 2015 02.
- the amount of light that a surface reflects in relation to a reference standard made of polished glass is measured.
- the unit of measurement used is GU (Gloss Units).
- the amount of light reflected on the surface depends on the angle of incidence and the properties of the surface.
- Gloss measurement different angles of incidence (20 °, 60 ° and 85 °) can be used to determine the degree of reflection, preferably measuring with the angle of incidence of 60 °. Alternatively, the mean value of measurements for the three angles of incidence can also be used. The degree of reflection compares the light energy emitted and received by a gloss meter in percent at a certain angle of incidence.
- the at least one solidified or hardened droplet is preferably more elastic or softer compared to the hardened or fixed base layer. This has the advantage that the at least one droplet is lighter, for example when a force is applied can be deformed, whereby a removal of the at least one droplet from the base layer is facilitated.
- the at least one droplet preferably experiences a reduction in volume, preferably while it is solidified or fixed. In this way it can be achieved that the at least one droplet is located in the fixed base layer with play, so that it can be removed therefrom more easily.
- a change in volume can be triggered, for example, by UV radiation that hits the at least one droplet.
- Another possibility would be to design the at least one droplet in such a way that the reduction in volume due to
- an application unit which is designed to apply a liquid base layer to a surface of the workpiece
- a dispensing unit which is designed to spray at least one droplet into the not yet solidified base layer
- a fixing unit which is designed to fix the liquid base layer
- a processing unit which is designed to at least partially remove the at least one droplet
- control unit which is designed to control the device in accordance with the method described above.
- the delivery unit is preferably equipped with one or more rows of print heads over the entire width of the workpiece.
- the device preferably has a transport unit which is designed to feed the workpiece to the application unit, the dispensing unit, the fixing unit and the processing unit, the transport unit preferably having a conveyor belt.
- the application unit preferably has an applicator roller, a digital print head and / or a digital nozzle bar, with which the liquid
- Base layer can be applied to the workpiece.
- the delivery unit preferably has a digital print head and / or a
- Digital nozzle bar with which the spraying of the at least one droplet can take place in the base layer.
- the fixing unit preferably has a UV light source, a heat source and / or a flow source, with which the fixing or curing of the
- Base layer can be done. In addition, it can also harden the
- a heat source can preferably have an infrared radiator or a fleece, the heat source
- a flow source can preferably have a fan which is designed to flow through the base layer and / or the at least one droplet with a medium, preferably air.
- the flow source is preferably designed for drying the base layer and / or the at least one droplet.
- the processing unit comprises a brush, a suction device, a removal device, e.g. a grinding or planing device or a sandblasting device, a device for dispensing a substance onto the base layer and / or the droplets that are used to chemically react with the
- the surface of the base layer can preferably be changed in such a way that the at least one droplet is exposed, for example by removing material. Pure reworking of the base layer and / or the at least one droplet from a decorative point of view is also possible.
- Fig. 1 shows a workpiece with a liquid base layer in which liquid
- 3a shows a workpiece with a liquid base layer in which liquid
- Droplets have been sprayed on, the liquid base layer at least partially enclosing the droplets
- FIG. 3b shows the same workpiece as in FIG. 3a after a further one
- FIG. 6 shows the spraying of droplets onto a workpiece before the liquid base layer is applied, as well as a possibility of applying a liquid base layer to a workpiece.
- FIG. 1 shows a workpiece 1 with a liquid base layer 2 onto which liquid droplets 3 have been sprayed. These droplets 3 have displaced the liquid base layer 2 locally, as a result of which depressions have been created in the base layer 2.
- the droplets 3 partially fill the wells created by the spraying, for example 50% of the fleas or the volume of the well, or 100% of the fleas or the volume of the well, so that after spraying the droplets 3, and before the Curing of the liquid base layer 2 an im
- FIG. 2 shows in the view I on the left a workpiece 1 according to FIG. 1 with the sprayed-on droplets 3 and with already hardened liquid base layer 2.
- This workpiece 1 is transported to a heat source 402 in the form of an infrared lamp, which in view II above the workpiece 1 is shown.
- a heat source 402 in the form of an infrared lamp, which in view II above the workpiece 1 is shown.
- the surface of the workpiece 1, in particular the base layer 2 and the droplets 3 is heated again by the infrared radiation.
- the droplets 3 are liquefied again, with the meanwhile hardened base layer 2 remaining solid.
- the workpiece 1 with the liquid droplets 3 is then transported to a suction device 403 shown on the right in view III, on which the droplets 3 that have become liquid again are suctioned off.
- the droplets 3 can be removed completely or only partially from the base layer 2. In the case of partial removal, care must be taken not to liquefy the entire droplet 3.
- Such an arrangement of heat source 402 and suction device 403 can, for example, in a device for carrying out the inventive
- FIG. 3a shows a workpiece 1 with a liquid base layer 2 into which liquid droplets 3 have been sprayed.
- the liquid base layer 2 above the droplets 3 has at least partially closed again before the fixation. While the two droplets 3 are completely enclosed by the base layer 2 on the right, no complete closure of the surface of the base layer 2 can be seen above the left droplet 3.
- an opening has remained above the droplet 3, the area of which is perpendicular to the top but is smaller than a projection area of the droplet 3 perpendicular to the top.
- FIG. 3b shows the workpiece 1 from FIG. 3a after a mechanical processing that follows the fixing of the base layer 2 and was carried out, for example, with a grinding machine. This processing resulted in a certain amount of material removed from the base layer 2, so that the
- the exposure of the droplets 3 can take place in such a way that only so much material is removed from the base layer 2 that the droplets 3 are visible, but have not been exposed over their entire cross-sectional area. This result is shown in Fig. 3b. It can be clearly seen here that the depressions in the base layer 2 form flint cuts which are filled by the droplets 3. If the droplets 3 are then removed from the base layer 2, for example as in Fig.
- the undercut remains in the base layer 2, which can achieve a decorative effect.
- Fig. 4 shows an inventive device for performing the
- the device is designed as a production line, the individual units 100,
- the device can also have the units 410 and 420.
- the device also has a transport unit 500 which is designed to transport a workpiece 1 to the individual units 100, 200, 300, 400, 450.
- the device has a control unit 600 which is designed to control the individual units 100, 200, 300, 400, 450, 500 for performing the to control corresponding method steps, or to cause the implementation of the method according to the invention in the device.
- a control unit 600 which is designed to control the individual units 100, 200, 300, 400, 450, 500 for performing the to control corresponding method steps, or to cause the implementation of the method according to the invention in the device.
- the transport unit 500 has a transport belt that extends from left to right and is designed to transport workpieces 1 from left to right in the transport direction to the individual units 100, 200, 300, 400, 450.
- an application unit 100 is initially shown which is designed to apply the base layer 2 in liquid form to the workpiece 1
- the application unit 101 has a rotating application roller 101 with which the base layer 2 is applied to the surface of the workpiece 1 facing upward in the drawing, as well as a counter-pressure roller 102.
- the application roller 101 rolls on the surface of the workpiece 1 from.
- the application unit 100 can alternatively or additionally also have other elements which are designed for applying the base layer 2.
- digital printing units such as a digital print head or a digital nozzle bar can be used for this
- Application unit 100 can also be designed as a casting machine in which the
- Workpiece 1 is moved through a curtain of paint.
- parameters of the base layer in particular the amount of material or the layer thickness or the temperature of the base layer 2 when it is applied to the workpiece 1, can be influenced by the application unit 100.
- the application unit 100 is followed by a delivery unit 200 which is designed to deliver the droplets 3 into the not yet solidified base layer 2.
- the dispensing unit 200 has one or more digital print heads or heads 201 and / or one or more digital nozzle bars with several, possibly arranged one behind the other in the transport direction, for the purpose of dispensing the droplets 3 over the width of the workpiece extending digital print heads that the
- Droplets 3 can release or spray onto the base layer 2.
- the dispensing unit 200 is designed in such a way that the droplets 3 penetrate the not yet solidified base layer 2 in such a way that they displace the base layer 2 and therein
- the dispensing unit 200 (or digital printing station) can furthermore be designed such that the droplets 3 penetrate the not yet solidified base layer 2 in such a way that they are at least partially enclosed by the base layer 2.
- parameters of the droplets 3, in particular the droplet volume or the droplet mass or the delivery or impact speed on the base layer 2, can be influenced by the delivery unit 200.
- the droplet volumes can preferably be controlled within a range from 3 to 200 pL (picoliters), the impact speed is preferably in the range from 2 to 10 m / s, particularly preferably in the range from 3 to 5 m / s.
- the delivery unit 200 is followed by a fixing unit 300, which is designed to fix the base layer 2.
- the fixation unit 300 has at least one UV light source 301, e.g. an LED UV emitter.
- the at least one UV light source 301 emits UV light onto the base layer 2 and triggers curing or polymerisation processes therein, as a result of which the base layer 2, which was at least not yet solidified before the irradiation with UV light, now solidifies and hardens or fixes it.
- the heat source e.g. an infrared light source or a fleece is designed to give off heat to the workpiece 1, the base layer 2 and / or the droplets 3.
- the flow source e.g. a fan is designed to blow air or another gas or medium for drying over the
- the parameters with which the base layer 2 or the droplets 3 are to flow in order to achieve drying or also a fixation by drying the base layer 2 and / or the droplets 3.
- the parameters with which the base layer 2 or the droplets 3 are to flow in order to achieve drying or also a fixation by drying the base layer 2 and / or the droplets 3.
- Fixing unit 300 is operated, in particular the energy or wavelength of the emitted UV radiation of the at least one UV light source 301, the
- Flow velocity or the temperature of the flowing medium of the flow source can be influenced by the fixing unit 300.
- the wavelength of the UV radiation is usually in the UV-A and possibly in the UV-B range, i.e. 280 nm to 400 nm.
- the output of the UV lamps for a production speed of 20 m / min. is around 2x to 5x 200 W / cm working width, i.e. With a workpiece width of 135 cm, the required output of the UV lamps is around 50 to 125 kW.
- the fixing unit 300 is designed to also fix the droplets 3 in addition to the base layer 2.
- the fixing unit 300 is followed in the transport direction by a processing unit which is designed to post-process the workpiece 1 with the fixed base layer 2 and the droplets 3 located thereon.
- a post-processing step is the at least partial removal of the
- the unit 400 is designed as a nozzle channel with a hot air blower around which the solidified
- a processing unit can also use the
- Units 410, 420 have. These can also be provided in addition to the units 400, 450.
- the unit 410 is here as a grinding device
- the unit 410 has a circumferential
- Abrasive belt 411 which is in the same direction or in the opposite direction to that on the Transport device 500 guided workpiece 1 runs. In this way, material can be removed from the base layer 2, the droplets 3 in the
- Base layer 2 can be at least partially exposed.
- the unit 420 has a brush 421, which is designed here as a rotating brush roller.
- the brush 421 is designed such that it can remove the droplets 3 from the fixed or solidified base layer 2 by means of the mechanical interaction of bristles with the droplets 3.
- the droplets 3 are preferably solidified in the base layer 2 so that the bristles of the brush 401 can attack the droplets 3 well.
- the suction device 403 of the unit 450 can, however, also be designed to suck the droplets 3 in solid form from the base layer 2. This presupposes that the droplets 3 are designed in such a way that they do not occur during solidification
- the unit 410 can also have such a grinding device which is designed to remove at least part of the solidified base layer 2 by grinding.
- the base layer 2 is preferably removed in layers, so that material is removed from the base layer 2 by grinding from above.
- the grinding device can also be designed to remove material from the droplets 3 in addition to the solidified base layer 2.
- the grinding device is preferably designed to at least partially expose the droplets 3, provided they were previously at least partially enclosed by the base layer 2.
- the exposed droplets can then be completely or partially removed by means of a unit 420 by means of the rotating brush 421.
- the processing unit also has a dispensing device which is designed to dispense a substance onto the fixed base layer 2 and / or onto the droplets 3, the substance being designed to be used with the Base layer 2 and / or to enter into a chemical reaction with the droplets 3.
- the substance can also be a solvent in order to bring the droplets 3 into solution and then suck them off with a unit 450. In this way, the base layer 2 and / or the droplets 3 can be at least partially removed.
- an optical and / or haptic change in the basic size 2 and / or the droplets 3 can also be achieved.
- the processing unit is designed to influence the amount of material that is removed from the base layer 2 and / or from the droplets 3.
- the control unit 600 has, for example, a control means, as here
- an electronic control device on which there is program code which, when it is executed, controls the control unit 600 to carry out the
- the device can also be designed in such a way that the application unit 100 is arranged only after the dispensing unit 200. In this way, droplets 3 can be applied to workpiece 1, followed by application of the liquid base layer 2
- dispensing unit 200 application unit 100 and a further dispensing unit 200 in the transport direction in order to enable droplets 3 to be applied to both the workpiece 1 and the base layer 2.
- the processing unit can have all of the above-mentioned units 400, 410, 420, 450 in the transport direction in any order or only a selection of these units 400, 410, 420, 450, whereby a repetition of units 400, 410, 420, 450 in the transport direction is also conceivable is.
- FIG. 5 shows a workpiece 1 for an embodiment in which several droplets 3 have been released at the same spatial location and remain one above the other in the liquid base layer 2 (left and right arrangement of the droplets 3).
- the droplets 3 have been stacked on top of one another, so that a significantly deeper depression or a significantly deeper structure is created in the base layer 2.
- the depression also extends to the surface of the workpiece 1.
- FIG. 6 shows a spraying of droplets 3 onto a workpiece 1 before a liquid base layer is applied. Below that is first of all
- the bottom diagram shows one possibility of a liquid
- Base layer 2 to be applied to a workpiece 1 by means of a casting machine 103.
- the workpiece 1 is fed to a digital print head 201 which emits droplets 3 onto the surface of the workpiece 1. As shown, these can also form larger droplets or more complex shapes
- the middle illustration shows an application of a liquid base layer 2 to this workpiece 1.
- Workpiece 1 are located, correspondingly flowed around by the liquid base layer 2.
- the liquid base layer is applied by means of an application roller 101 to the
- the application roller corresponds with a
- Workpiece 1 unrolls, workpiece 1 moving from left to right under application roller 101.
- liquid base layer 2 is by means of a
- Casting machine 103 applied, the casting machine 103 producing a curtain from the material of the liquid base layer 2, under which the workpiece 1 is then moved from left to right.
- Embodiment 1 is further described using five specific exemplary embodiments.
- a workpiece 1 in the form of a chipboard with a thickness of 12 mm is fed to a painting station.
- the chipboard is given a white base coat at least on the surface. This base coat is cured using a UV module.
- the chipboard primed in this way, is then digitally printed with a wood decor, e.g. Oak or pine decor digitally printed.
- a wood decor e.g. Oak or pine decor digitally printed.
- the workpiece 1 printed in this way is then fed to a further painting station at which the liquid base layer 2 is applied to the workpiece 1 in the form of a UV-curing acrylate lacquer according to the prior art.
- a value of more than 30 g / m 2 with a layer thickness of more than 30 ⁇ m, particularly preferably more than 120 ⁇ m in layer thickness, is selected as the amount applied.
- the workpiece 1 is then fed to a digital printing station, which
- the ink from Sunjet with the brand name Sunjet Crystal HEP9520 is chosen, for example.
- a large number of droplets 3 of the ink are then released onto the workpiece 1 with the liquid base layer 2 according to a digital printing template, whereby depressions of 30 to 120 ⁇ m are made in the still liquid base layer 2.
- the droplets 3 are applied at a temperature of more than 80 ° C. and solidify when they strike the liquid base layer, which has a temperature of 20 to 30 ° C.
- the workpiece 1 is then fed to a UV curing process, in which three UV lamps with a power of 200 W / cm 2 each cure the base layer 2.
- the workpiece 1 with the cured base layer 2 is then heated in an IR station with infrared radiation to a surface temperature of more than 100 ° C. so that the droplets 3 become liquid again.
- These liquid droplets 3 are then removed from the base layer 2 in a suction station.
- the droplets 3 are removed by mechanical means, such as a rotating brush.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- a workpiece 1 in the form of a plastic plate made of a PVC mixture with a thickness of 5 mm and a surface that has been decoratively printed in advance becomes a
- liquid base layer 2 made of a UV-curing acrylate material according to the prior art is applied, specifically with a layer thickness of 40 to 300 ⁇ m, preferably 90 to 120 ⁇ m.
- the workpiece 1 coated in this way is then transported to a digital printing station, where the liquid base layer 2 is structured in the form of droplets 3 according to a digital template by means of ink dispensed thereon.
- the released droplets 3 penetrate into the liquid base layer 2 with a volume between 6 pL and 400 pL in such a way that the base layer 2 closes again after the droplets 3 have penetrated them.
- the droplets 3 are made of a material which is essential
- the basis also consists of acrylates.
- the droplets 3 do not contain any means for stimulating UV curing, as is the case with the material of the liquid base layer 2.
- the liquid base layer 2 is therefore cured by means of UV LED lamps, while the enclosed droplets 3 remain liquid.
- the surface of the cured base layer 2 is increased by means of a mechanical process using a grinding machine
- the still liquid droplets 3 are just exposed underneath.
- the still liquid droplets 3 are brushed out with a brush.
- the still liquid droplets 3 are removed by applying a solvent and then sucking off the solvent.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- a workpiece 1 in the form of a plastic plate made of a filled PP mixture (e.g. polypropylene with chalk) with a thickness of 4.2 mm, a length of 2,800 mm, a width of 1,350 mm and a plain-colored painted surface is fed to a coating station. Further layers of lacquer and / or primer can be applied on and under the plain-colored surface.
- a filled PP mixture e.g. polypropylene with chalk
- Further layers of lacquer and / or primer can be applied on and under the plain-colored surface.
- a liquid base layer 2 made of a UV-curing acrylate material according to the prior art is applied with a layer thickness of 100 to 150 ⁇ m. After the fixation by means of UV radiation described below, this material has a melting point of> 300 ° C. The viscosity of this layer is approx. 11 mPas at a temperature of 85 ° C.
- the workpiece 1 coated in this way is then transported to a digital printing station, where the liquid base layer 2 is structured in the form of droplets 3 according to a digital template by means of ink dispensed thereon.
- the droplets consist of 20-40% isophoronediamine, and they have one Melting point of 88 ° C. They are held in the printing station at a temperature of 95 ° C. and are delivered at this temperature from digital print heads onto the liquid base layer 2. The distance of the printheads to the liquid
- Base layer 2 is 1 mm to 10 mm, preferably 1.5 mm to 3 mm.
- the speed of the droplets 3 before penetration into the liquid base layer 2 is 3 to 10 m / s, preferably 4 to 5 m / s.
- the dispensed droplets 3 have a volume between 6 pL and 400 pL, preferably 10 to 30 pL.
- the digital print heads in the printing station are designed in such a way that they can deliver several droplets 3 on top of one another from one print head at one spatial location.
- the digital printing station is designed so that the print heads extend in one or more rows over the entire transport width.
- print heads from Xaar (Type Xaar 1003) are used, which have an effective printing width of 68 mm. Therefore 20 print heads are used per row in order to achieve a minimum print width of more than the workpiece width of 1,350 mm.
- three rows with 20 Xaar 1003 print heads each are used one behind the other in the direction of passage. This allows the
- Printing station at a feed speed of the workpiece 1 of 25 m / min at the same spatial location from the three rows of print heads, each dropping one droplet per location, which penetrate into the liquid base layer as described above, cure on top of each other and achieve a total height of 3xD (diameter per droplet).
- the workpiece 1 is driven at the above-mentioned speed of 25 m / min. transported through the printing station (see FIG. 4).
- at least one droplet 3 is released into the liquid base layer 2 at one spatial location - or, as alternatively shown above, a number n of droplets 3 on top of one another at one spatial location. Due to the continuous feed speed and the continuously working print heads over the entire width of the workpiece, a “structure image” created on the basis of a digital template can be generated on the workpiece 1.
- the liquid base layer 2 is therefore cured by means of UV LED lamps, while the droplets 3 have already solidified beforehand.
- the solidified droplets 3 are brushed out with a brush.
- the solidified droplets 3 are liquefied again in a hot air duct with a nozzle temperature of 125 ° C. and then sucked off.
- the solidified droplets 3 are loosened again by the application of a solvent and removed by a subsequent suction of the solvent.
- Embodiment are the droplets 3 made of a water-soluble material, so that essentially water is used as the solvent.
- Embodiment 4 :
- composition of the droplets 3 can be selected as follows:
- the droplets 3 are removed by mechanical means, or alternatively they are liquefied again by heating in a hot air oven and then removed from the base layer 2 by mechanical means and / or suction.
- Embodiment 5 is a diagrammatic representation of Embodiment 5:
- the droplets 3 are applied before the liquid base layer 2 is applied.
- a workpiece 1 in the form of an HDF board with a density of 850 kg / m 3 in the dimensions 8 mm thick, 2450 mm long and 1550 mm wide is fed to a digital printing station.
- the HDF board is prepared beforehand with one or more painting or priming steps, and then digitally printed with a decorative image of a wood replica (for example beech parquet three-strip).
- a wood replica for example beech parquet three-strip.
- an intermediate lacquer layer can also be applied after this printing.
- a large number of droplets 3 with a volume between 12 pL and 40 pL are printed onto the previously decoratively printed surface, specifically according to a digital template. Between at least 100 and up to 10,000 droplets per cm 2 of surface are applied. These droplets 3 consist of one Paraffin mixture, which is printed on at a temperature of 80 degrees Celsius, and solidifies on contact with the surface within less than three seconds, preferably less than one second.
- the droplets 3 are applied according to a digital template, which was created from the digital image of the previously printed decorative surface by means of digital processing methods.
- the droplets 3 are printed, for example, exactly where the decorative image of the beech parquet has a knothole, so that the structures later generated using the method according to the invention are synchronous with the decorative image below.
- a plurality of droplets 3 can also be arranged one above the other at one spatial location so that the entire
- a large number of these “towers” of superimposed droplets 3 are applied next to one another, longitudinally or transversely to the feed direction, so that a structure of a large number of chain of droplets and individual droplet collections results on the workpiece 1.
- the height of the individual “towers” can be different, both by varying the number of droplets 3 on top of one another and by varying the
- a liquid base layer 2 made of a UV-curing acrylate material according to the prior art is applied, specifically with a layer thickness of 120 ⁇ m.
- the liquid base layer 2 is made with the help of a casting machine
- the layer thickness can be determined by the viscosity of the material of the liquid base layer (here UV-curing acrylate lacquer according to the prior art technology), can be influenced and controlled by the speed of the scoop roller of the casting machine and by the feed speed of the workpiece 1 (here HDF board).
- the liquid base layer 2 is cured by means of UV LED lamps.
- the droplets 3 are removed by mechanical means or, alternatively, by heating in the
- the still liquid droplets 3 are removed by applying a solvent and then sucking off the solvent.
- the material of the droplets 3 is chosen such that it begins to shrink when exposed to UV radiation.
- the droplets 3 lose contact with the latter and can be suctioned off using simple means.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Chemically Coating (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Turning (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23160613.8A EP4215282A1 (en) | 2019-05-03 | 2020-05-04 | Method for producing a structure on a surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019206431.0A DE102019206431A1 (en) | 2019-05-03 | 2019-05-03 | Method for producing a structure on a surface |
PCT/EP2020/062316 WO2020225210A2 (en) | 2019-05-03 | 2020-05-04 | Methods for producing a structure on a surface |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP23160613.8A Division EP4215282A1 (en) | 2019-05-03 | 2020-05-04 | Method for producing a structure on a surface |
Publications (1)
Publication Number | Publication Date |
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EP3752296A2 true EP3752296A2 (en) | 2020-12-23 |
Family
ID=68581334
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23159373.2A Pending EP4212254A1 (en) | 2019-05-03 | 2019-11-12 | Method and device for surface treatment |
EP19208738.5A Pending EP3733307A1 (en) | 2019-05-03 | 2019-11-12 | Method and device for producing a decorative surface |
EP19208741.9A Active EP3733308B1 (en) | 2019-05-03 | 2019-11-12 | Method and device for surface finishing |
EP23160613.8A Pending EP4215282A1 (en) | 2019-05-03 | 2020-05-04 | Method for producing a structure on a surface |
EP20724447.6A Pending EP3752296A2 (en) | 2019-05-03 | 2020-05-04 | Methods for producing a structure on a surface |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23159373.2A Pending EP4212254A1 (en) | 2019-05-03 | 2019-11-12 | Method and device for surface treatment |
EP19208738.5A Pending EP3733307A1 (en) | 2019-05-03 | 2019-11-12 | Method and device for producing a decorative surface |
EP19208741.9A Active EP3733308B1 (en) | 2019-05-03 | 2019-11-12 | Method and device for surface finishing |
EP23160613.8A Pending EP4215282A1 (en) | 2019-05-03 | 2020-05-04 | Method for producing a structure on a surface |
Country Status (8)
Country | Link |
---|---|
US (4) | US20200346395A1 (en) |
EP (5) | EP4212254A1 (en) |
KR (1) | KR20210149794A (en) |
CN (3) | CN114174076A (en) |
DE (1) | DE102019206431A1 (en) |
ES (1) | ES2964229T3 (en) |
PL (1) | PL3733308T3 (en) |
WO (3) | WO2020225210A2 (en) |
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CN112188936A (en) | 2021-01-05 |
US20200346395A1 (en) | 2020-11-05 |
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EP3733307A1 (en) | 2020-11-04 |
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US20200346484A1 (en) | 2020-11-05 |
EP3733308C0 (en) | 2023-09-13 |
CN112188936B (en) | 2024-01-09 |
CN112399922A (en) | 2021-02-23 |
EP3733308A2 (en) | 2020-11-04 |
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