ITMI20001141A1 - PROCEDURE AND PLANT FOR THE APPLICATION OF A PHOTOPOLYMERABLE SOLID PAINT ON THE FLAT SURFACES OF MANUFACTURED AND OBTAINED OBJECT - Google Patents
PROCEDURE AND PLANT FOR THE APPLICATION OF A PHOTOPOLYMERABLE SOLID PAINT ON THE FLAT SURFACES OF MANUFACTURED AND OBTAINED OBJECT Download PDFInfo
- Publication number
- ITMI20001141A1 ITMI20001141A1 IT2000MI001141A ITMI20001141A ITMI20001141A1 IT MI20001141 A1 ITMI20001141 A1 IT MI20001141A1 IT 2000MI001141 A IT2000MI001141 A IT 2000MI001141A IT MI20001141 A ITMI20001141 A IT MI20001141A IT MI20001141 A1 ITMI20001141 A1 IT MI20001141A1
- Authority
- IT
- Italy
- Prior art keywords
- paint
- process according
- layer
- aforementioned
- product
- Prior art date
Links
- 239000003973 paint Substances 0.000 title claims description 37
- 238000000034 method Methods 0.000 title claims description 30
- 239000007787 solid Substances 0.000 title claims description 12
- 239000010410 layer Substances 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid group Chemical group C(C1=CC=CC=C1)(=O)O WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims description 2
- 238000001227 electron beam curing Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims 3
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 238000006116 polymerization reaction Methods 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000002966 varnish Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000007592 spray painting technique Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 241000327810 Raja velezi Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Description
Descrizione dell’invenzione avente per titolo: Description of the invention entitled:
“PROCEDIMENTO E IMPIANTO PER L’APPLICAZIONE DI UNA VERNICE SOLIDA FOTOPOLIMERIZZABILE SULLE SUPERFICI PIANE DI MANUFATTI E MANUFATTO OTTENUTO CON QUESTO PROCEDIMENTO E CON QUESTO IMPIANTO” "PROCEDURE AND SYSTEM FOR THE APPLICATION OF A SOLID LIGHT CURED PAINT ON THE FLAT SURFACES OF ARTICLES AND ARTICLES OBTAINED WITH THIS PROCESS AND WITH THIS SYSTEM"
DESCRIZIONE DESCRIPTION
La presente invenzione concerne un procedimento e un impianto particolarmente adatti per applicare una vernice solida fotopolimerizzabile sulle superfici piane di manufatti in genere. L’invenzione si estende anche al manufatto ottenuto con questo procedimento e con questo impianto. The present invention relates to a process and a plant particularly suitable for applying a photopolymerizable solid paint on the flat surfaces of manufactured articles in general. The invention also extends to the product obtained with this procedure and with this plant.
Il campo di applicazione dell’ invenzione è quello dei prodotti che vengono impiegati per verniciare o in generale per rivestire le superfici piane di manufatti, quali per esempio lastre di vetro, pannelli di legno, plastica, lamiere e coils di materiali ferrosi e non, oppure similari. The field of application of the invention is that of the products that are used to paint or in general to coat the flat surfaces of products, such as glass sheets, wooden panels, plastic, sheets and coils of ferrous and non-ferrous materials, or similar.
Per realizzare il rivestimento dei materiali anzidetti, sia per scopi di protezione superficiale, sia per ragioni estetiche e decorative, vengono utilizzate delle vernici in polvere, costituite da una parte pigmentaria dispersa in un veicolo, solitamente una resina termoindurente, termoplastica o entrambe. Eventualmente può essere aggiunta una sostanza fotopolimerizzante. Tali vernici, opportunamente micronizzate così da ottenere una polvere molto fine, vengono attualmente applicate per spruzzatura sull’oggetto da trattare. Quest’ultimo viene in seguito sottoposto a riscaldamento, così da conseguire l’indurimento e la aderenza della resina al supporto. Nel caso di vernici fotopolimerizzabili, la reazione viene avviata per irraggiamento. To carry out the coating of the aforementioned materials, both for surface protection purposes and for aesthetic and decorative reasons, powder paints are used, consisting of a pigmentary part dispersed in a vehicle, usually a thermosetting resin, thermoplastic or both. Optionally, a light-curing substance can be added. These paints, suitably micronized so as to obtain a very fine powder, are currently applied by spraying on the object to be treated. The latter is then subjected to heating, so as to achieve hardening and adhesion of the resin to the substrate. In the case of photopolymerizable paints, the reaction is initiated by irradiation.
Il principale inconveniente della tecnica di applicazione a spruzzo delle vernici è rappresentato dal fatto che la micronizzazione della polvere e le operazioni di verniciatura provocano delle dispersioni nell’ambiente di lavoro, sia nella fase di produzione della vernice, sia al momento della applicazione di questa sui manufatti. Tali dispersioni sono a loro volta causa di fenomeni di inquinamento ambientale, e richiedono il recupero dei quantitativi di polvere dispersi e degli scarti in genere. The main drawback of the spray application technique of paints is represented by the fact that the micronization of the powder and the painting operations cause dispersions in the work environment, both in the production phase of the paint and at the time of application of this on the manufactured goods. These dispersions are in turn the cause of environmental pollution phenomena, and require the recovery of the quantities of dispersed dust and waste in general.
A quanto detto si aggiunge che i noti cicli produttivi e trattamenti di verniciatura a spruzzo sono resi considerevolmente lunghi, a causa del vincolo imposto dalla applicazione a spruzzo della polvere, che è notoriamente un processo molto lento ed elaborato. In addition to the above, the known production cycles and spray painting treatments are made considerably long, due to the constraint imposed by the spray application of the powder, which is notoriously a very slow and elaborate process.
Dal canto suo, l’impiantistica normalmente necessaria per produrre, applicare e per indurire questi prodotti è piuttosto complessa e pone talvolta anche dei problemi di spazio e di costi di gestione e di realizzazione. For its part, the plant engineering normally required to produce, apply and harden these products is quite complex and sometimes also poses problems of space and management and construction costs.
Costituisce lo scopo principale della presente invenzione quello di fornire un nuovo procedimento e un impianto per l’applicazione di una vernice solida fotopolimerizzabile sulle superfici piane di manufatti in genere, il quale procedimento permetta di superare tutti gli inconvenienti (dispersioni, inquinamento ambientale, ecc..) legati ai noti trattamenti di verniciatura a spruzzo. The main purpose of the present invention is to provide a new process and a plant for the application of a photopolymerizable solid paint on the flat surfaces of manufactured articles in general, which process allows to overcome all the drawbacks (dispersions, environmental pollution, etc. .) related to the known spray painting treatments.
L’invenzione ha inoltre lo scopo di fornire un procedimento del tipo anzidetto, il quale sia più veloce in rapporto a tradizionali metodi di verniciatura a spruzzo. The invention also has the purpose of providing a process of the aforementioned type, which is faster in relation to traditional spray painting methods.
È un ulteriore scopo dell’invenzione quello di fornire un nuovo impianto per l’applicazione di vernici solide fotopolimerizzabili che, rispetto ai noti impianti di verniciatura a spruzzo, risulti anche meno ingombrante e maggiormente economico. A further purpose of the invention is to provide a new system for the application of photopolymerizable solid paints which, compared to known spray painting systems, is also less bulky and more economical.
È ancora uno scopo dell’invenzione quello di fornire un procedimento e un impianto del tipo anzidetto, i quali siano in grado di riprodurre, sulla superficie del manufatto, una ampia varietà di motivi estetici desiderati. Another object of the invention is to provide a process and a plant of the aforementioned type, which are able to reproduce, on the surface of the product, a wide variety of desired aesthetic motifs.
La presente invenzione ha infine lo scopo di fornire un procedimento e un impianto per l’applicazione di vernici solide i quali, rispetto alla nota metodologia a spruzzo, permettano di eseguire un controllo sullo spessore del rivestimento applicato, migliorando al contempo l’uniformità dimensionale di quest’ultimo. Finally, the present invention has the purpose of providing a process and a plant for the application of solid paints which, compared to the known spray method, allow to perform a control on the thickness of the applied coating, while improving the dimensional uniformity of the latter.
Questi ed altri scopi sono raggiunti con il procedimento, con l’impianto e con il manufatto delle rivendicazioni 1, 9 e 13. Ulteriori caratteristiche dell’invenzione risultano dalle restanti rivendicazioni. These and other purposes are achieved with the process, with the plant and with the product of claims 1, 9 and 13. Further features of the invention result from the remaining claims.
Rispetto ai noti procedimenti di applicazione a spruzzo delle vernici, quello dell’ invenzione offre il vantaggio di eliminare completamente la formazione di polveri. Compared to the known methods of spray application of paints, that of the invention offers the advantage of completely eliminating the formation of dust.
Il procedimento dell’invenzione ha anche il vantaggio di diminuire il tempo di applicazione della vernice, grazie alla maggiore rapidità consentita dal trattamento di spalmatura, rispetto a quello di applicazione a spruzzo di una polvere. The process of the invention also has the advantage of reducing the paint application time, thanks to the greater speed allowed by the coating treatment, compared to that of applying a powder spray.
L’impianto relativo all’invenzione risulta inoltre meno voluminoso e di minor costo rispetto a quelli utilizzati per applicare le vernici con un trattamento di spruzzatura, consentendo anche un importante risparmio energetico. The plant relating to the invention is also less bulky and cheaper than those used to apply paints with a spray treatment, also allowing for significant energy savings.
Il procedimento dell’invenzione presenta ancora il vantaggio, rispetto a quelli noti, di offrire la possibilità di riprodurre diversi effetti estetici sulla superficie rivestita del manufatto, semplicemente utilizzando dei rulli di spalmatura a superficie sagomata. The process of the invention still has the advantage, compared to the known ones, of offering the possibility of reproducing different aesthetic effects on the coated surface of the product, simply by using the coating rollers with a shaped surface.
Il procedimento dell’invenzione ha anche il vantaggio di consentire di ridurre lo spessore del rivestimento applicato sulla superficie del manufatto, migliorandone al contempo l’uniformità dimensionale. The process of the invention also has the advantage of allowing the thickness of the coating applied to the surface of the product to be reduced, while improving its dimensional uniformity.
Queste ed altre caratteristiche e vantaggi risultano dalla descrizione che segue di un preferito modo di realizzare il procedimento o rimpianto dell’invenzione illustrati, a titolo di esempio non limitativo, nella figura della tavola allegata. These and other features and advantages result from the following description of a preferred way of carrying out the process or regret of the invention illustrated, by way of non-limiting example, in the figure of the attached table.
Secondo l’invenzione viene preparata una vernice solida formata da un veicolo, a base di resine poliestere, acriliche, epossidiche o loro miscele, al quale sono aggiunti un agente fotopolimerizzante (per esempio di tipo fenolico o a base benzoica) e una parte colorante formata da pigmenti. Tale vernice solida è in forma di granuli, chips o scaglie aventi diametro dell’ordine da 1 a 5 mm, che contengono in miscela i componenti anzidetti. According to the invention, a solid paint is prepared formed by a vehicle, based on polyester, acrylic, epoxy resins or their mixtures, to which are added a photopolymerizing agent (for example of the phenolic or benzoic-based type) and a coloring part formed by pigments. This solid paint is in the form of granules, chips or flakes having a diameter of the order of 1 to 5 mm, which contain the aforementioned components in a mixture.
La massa 10 di vernice solida viene preparata all’interno di un estrusore 1, nel quale essa viene fusa e miscelata, a temperature dell’ordine di 50 ÷ 200°C, fino ad ottenere dei granuli di vernice che hanno le dimensioni nel campo dei valori precedentemente indicato. The solid paint mass 10 is prepared inside an extruder 1, in which it is melted and mixed, at temperatures of the order of 50 ÷ 200 ° C, to obtain paint granules which have the dimensions in the range of values previously indicated.
All’uscita dell’estrusore 1 si ottiene una massa fusa di vernice 11 che viene convogliata su uno o più cilindri di spalmatura 2. 1 cilindri ricevono per caduta la massa 11 di vernice e la trasferiscono sulla superficie piana 12 del manufatto 13, per esempio un coil di acciaio. At the outlet of the extruder 1, a melted mass of paint 11 is obtained which is conveyed onto one or more coating cylinders 2. The cylinders receive the mass 11 of paint by gravity and transfer it onto the flat surface 12 of the article 13, for example a steel coil.
A questo punto il manufatto, che reca sulla sua superficie lo strato 14 di rivestimento, viene fatto passare attraverso un sistema di riscaldamento 3 e 4 (forno ad aria calda o lampade riscaldanti), allo scopo di mantenere la vernice allo stato fuso, condizione questa che consente il successivo trattamento di fotopolimerizzazione. At this point the product, which bears the coating layer 14 on its surface, is passed through a heating system 3 and 4 (hot air oven or heating lamps), in order to keep the paint in the molten state, this condition which allows the subsequent photopolymerization treatment.
Quest’ultimo è realizzato facendo passare la superficie 12 del manufatto, che reca lo strato di rivestimento 14 allo stato fuso, al di sotto di una serie di lampade 5 a raggi U.V. All’uscita dalle lampade 5 questo strato 14 risulta polimerizzato e quindi indurito in forma di un film che aderisce alla citata superficie 12. Il manufatto 13 così ottenuto viene fatto passare in un tunnel di raffreddamento 7. The latter is made by passing the surface 12 of the product, which bears the coating layer 14 in the molten state, underneath a series of U.V. ray lamps 5. Upon exiting the lamps 5, this layer 14 is polymerized and then hardened in the form of a film that adheres to the aforementioned surface 12. The product 13 thus obtained is passed through a cooling tunnel 7.
Nel caso di verniciatura di coils, il prodotto verniciato viene riavvolto in bobine. Per dei manufatti piani a struttura rigida, è previsto un opportuno sistema di recupero per impilaggio o accatastamento. In the case of coils painting, the painted product is rewound in reels. For flat products with a rigid structure, an appropriate stacking or stacking recovery system is provided.
Come variante, al posto delle lampade 5 a raggi U.V. possono essere utilizzati dei sistemi che effettuano il bombardamento con elettroni dello strato di vernice 14 allo stato fuso (cosiddetto trattamento Electron Beam Curing.). Inoltre, a monte della fase di indurimento realizzata dalle lampade 5, può essere previsto un rullo ausiliario 6 avente una superficie lavorata, adatto per trasferire sullo strato di rivestimento 14 l’impronta di un disegno decorativo. As a variant, instead of the 5 U.V. systems can be used which carry out the electron bombardment of the layer of paint 14 in the molten state (so-called Electron Beam Curing treatment). Furthermore, upstream of the hardening phase carried out by the lamps 5, an auxiliary roller 6 may be provided having a machined surface, suitable for transferring the imprint of a decorative design onto the coating layer 14.
Si aggiunge infine che, al posto dell’estrusore 1, può essere direttamente previsto un fìisore per l’ottenimento della vernice allo stato fuso. Finally, it is added that, instead of the extruder 1, a fixture can be directly provided for obtaining the paint in the molten state.
Claims (14)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2000MI001141A IT1317555B1 (en) | 2000-05-23 | 2000-05-23 | PROCEDURE AND PLANT FOR THE APPLICATION OF A SOLID, PHOTOLYMERIZABLE PAINT ON FLAT SURFACES OF MANUFACTURED AND MANUFACTURED PRODUCTS |
| PCT/EP2001/005848 WO2001089718A2 (en) | 2000-05-23 | 2001-05-22 | Process and apparatus for the application of a solid photopolymerizable paint to the flat surfaces of products, and product obtained thereby |
| AU69026/01A AU6902601A (en) | 2000-05-23 | 2001-05-22 | Process and apparatus for the application of a solid photopolymerizable paint tothe flat surfaces of products, and product obtained with that process and that apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2000MI001141A IT1317555B1 (en) | 2000-05-23 | 2000-05-23 | PROCEDURE AND PLANT FOR THE APPLICATION OF A SOLID, PHOTOLYMERIZABLE PAINT ON FLAT SURFACES OF MANUFACTURED AND MANUFACTURED PRODUCTS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITMI20001141A0 ITMI20001141A0 (en) | 2000-05-23 |
| ITMI20001141A1 true ITMI20001141A1 (en) | 2001-11-23 |
| IT1317555B1 IT1317555B1 (en) | 2003-07-09 |
Family
ID=11445102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2000MI001141A IT1317555B1 (en) | 2000-05-23 | 2000-05-23 | PROCEDURE AND PLANT FOR THE APPLICATION OF A SOLID, PHOTOLYMERIZABLE PAINT ON FLAT SURFACES OF MANUFACTURED AND MANUFACTURED PRODUCTS |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU6902601A (en) |
| IT (1) | IT1317555B1 (en) |
| WO (1) | WO2001089718A2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0141796A1 (en) * | 1983-09-21 | 1985-05-15 | U C B, S.A. | Process for applying cured resin coatings to substrates |
| WO1998008619A1 (en) * | 1996-08-30 | 1998-03-05 | Hoechst Celanese Corporation | Method for melt-coating surfaces with curable powder polymer compositions |
| DE19812471A1 (en) * | 1998-03-23 | 1999-09-30 | Schaefer Hans Juergen | Method and device for the two-layer coating of copper foils with meltable coating agents |
| DE19917965A1 (en) * | 1999-04-21 | 2000-10-26 | Daimler Chrysler Ag | Radiation curable laminate sheet useful for production of automobile parts contains binding agent having specified glass transition temperature |
| DE19947521A1 (en) * | 1999-10-02 | 2001-04-05 | Basf Coatings Ag | Solid mixture for use in coating, adhesive or sealant materials, e.g. for painting cars, contains a solid acrylic copolymer and another solid compound, both with groups containing UV-polymerizable bonds |
-
2000
- 2000-05-23 IT IT2000MI001141A patent/IT1317555B1/en active
-
2001
- 2001-05-22 WO PCT/EP2001/005848 patent/WO2001089718A2/en not_active Ceased
- 2001-05-22 AU AU69026/01A patent/AU6902601A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001089718A2 (en) | 2001-11-29 |
| ITMI20001141A0 (en) | 2000-05-23 |
| WO2001089718A3 (en) | 2002-04-25 |
| AU6902601A (en) | 2001-12-03 |
| IT1317555B1 (en) | 2003-07-09 |
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