IT202000002725A1 - METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS - Google Patents
METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS Download PDFInfo
- Publication number
- IT202000002725A1 IT202000002725A1 IT102020000002725A IT202000002725A IT202000002725A1 IT 202000002725 A1 IT202000002725 A1 IT 202000002725A1 IT 102020000002725 A IT102020000002725 A IT 102020000002725A IT 202000002725 A IT202000002725 A IT 202000002725A IT 202000002725 A1 IT202000002725 A1 IT 202000002725A1
- Authority
- IT
- Italy
- Prior art keywords
- objects
- matt
- metallic
- glaze
- glazing
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 23
- 238000004534 enameling Methods 0.000 title description 2
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 238000005488 sandblasting Methods 0.000 claims description 11
- 210000003298 dental enamel Anatomy 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 3
- 238000011282 treatment Methods 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910000842 Zamak Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000010431 corundum Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Glass Compositions (AREA)
Description
Descrizione dell?invenzione avente per titolo: Description of the invention entitled:
?METODO DI SMALTATURA OPACA DI OGGETTI METALLICI E PRODOTTO COS? OTTENUTO? METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND COS PRODUCT OBTAINED?
Descrizione Description
Campo della tecnica Field of technique
La presente invenzione opera nell?ambito dei metodi di lavorazione di oggetti metallici. Pi? dettagliatamente si tratta di un processo volto alla produzione di oggetti con almeno una porzione smaltata con finitura superficiale opaca. The present invention operates in the field of methods for processing metal objects. Pi? in detail it is a process aimed at producing objects with at least one glazed portion with a matt surface finish.
Arte nota Known art
La lavorazione degli oggetti metallici ? un campo dell?industria che ha raggiunto anni addietro un notevole livello di precisione ma che negli ultimi decenni rappresenta un settore abbastanza statico. The processing of metal objects? a field of industry that has reached a considerable level of precision years ago but which in recent decades represents a fairly static sector.
Gli oggetti interessati dalla presente domanda di brevetto per invenzione industriale sono oggetti metallici caratterizzati da una particolare valenza estetica. In un utilizzo preferito, essi sono parte di oggetti di moda e di design, come fibbie, bottoni o altri sistemi di chiusura, bracciali o altri gioielli, spille o oggetti decorativi in generale. The objects concerned by the present patent application for industrial invention are metal objects characterized by a particular aesthetic value. In a preferred use, they are part of fashion and design objects, such as buckles, buttons or other closure systems, bracelets or other jewels, brooches or decorative objects in general.
Allo stato attuale dell?arte molte case di moda richiedono che l?oggetto in questione sia non solo lucidato ma anche trattato almeno parzialmente con una smaltatura, per conferire all?oggetto un colore. In the current state of the art, many fashion houses require that the object in question be not only polished but also treated at least partially with a glaze, to give the object a color.
Tutti gli oggetti metallici in questione subiscono, ad un certo punto della propria filiera di produzione, almeno un processo di galvanizzazione. Questo consiste nell?immersione in dispositivi appositi, chiamati appunto ?vasche galvaniche? nelle quali il metallo (a volte prezioso) col quale rivestire l?oggetto, ? presente nella soluzione liquida nella quale gli oggetti vengono immersi. Grazie al passaggio di una corrente elettrica, la sospensione (d?oro, d?argento o altro) aderisce in maniera irreversibile al metallo che incontra e, per l?appunto, all?oggetto immerso. All the metal objects in question undergo, at a certain point in their production chain, at least one galvanization process. This consists in immersion in special devices, called precisely? Galvanic tanks? in which the metal (sometimes precious) with which to cover the object,? present in the liquid solution in which the objects are immersed. Thanks to the passage of an electric current, the suspension (gold, silver or other) adheres irreversibly to the metal it encounters and, precisely, to the immersed object.
Tale passaggio d? vita a una finitura lucida. This passage d? life to a glossy finish.
Attualmente tutte le superfici smaltate sono lucide, che non ? possibile opacizzare se non con la sabbiatura. Currently all the glazed surfaces are glossy, which is not? it can be opacified except by sandblasting.
Ne consegue l?oggettiva difficolt? di creare oggetti con porzioni di smalto opaco e porzioni di metallo lucido per effetto del processo di galvanizzazione. Per tale ragione simili oggetti sono, ad oggi, o completamente lucidi o completamente opachi. Does it follow the objective difficulty? to create objects with portions of opaque enamel and portions of shiny metal as a result of the galvanization process. For this reason such objects are, to date, either completely shiny or completely opaque.
Alcune privative internazionali hanno ad oggetto processi di opacizzazione come, ad esempio, il brevetto WO2019004963 che riguarda per? oggetti in legno, in particolare porte, o il brevetto WO2017088083 con riferimento a trattamenti di opacizzazione di pelle sintetica. Quelli appena citati, come altre privative (CN206509872; TW207971; GB180783 e altre) non riguardano processi applicabili per la soluzione del problema tecnico individuato e risolto dalla presente invenzione. Some international patents relate to opacification processes such as, for example, the patent WO2019004963 which concerns for? wooden objects, in particular doors, or the patent WO2017088083 with reference to opacification treatments of synthetic leather. Those just mentioned, like other rights (CN206509872; TW207971; GB180783 and others) do not concern processes applicable for the solution of the technical problem identified and solved by the present invention.
Scopo della presente invenzione ?, pertanto, quello di colmare questa carenza nei processi industriali e proporre un nuovo e innovativo metodo di lavorazione di oggetti metallici comprendenti almeno una porzione di smalto opaca. Therefore, the aim of the present invention is to fill this gap in industrial processes and to propose a new and innovative method for processing metal objects comprising at least a portion of opaque enamel.
Descrizione dell?invenzione Description of the invention
Secondo la presente invenzione viene realizzato un oggetto metallico parzialmente lucido e parzialmente opaco, descrivendone il metodo di realizzazione e risolvendo efficacemente le problematiche suesposte. According to the present invention, a partially shiny and partially opaque metal object is produced, describing its manufacturing method and effectively solving the aforementioned problems.
Il metodo comprende le seguenti fasi: The method includes the following steps:
(A) smaltatura; (A) glazing;
(B) levigatura o pulimentatura; (B) sanding or polishing;
(C) sabbiatura; (C) sandblasting;
(D) galvanizzazione. (D) galvanization.
In alcune forme di realizzazione dell?invenzione, pu? essere prevista un?ulteriore fase di seconda galvanizzazione (E) nella quale l?oggetto viene sottoposto a un ulteriore trattamento galvanico per ottenere una maggiore brillantezza della porzione lucida. In some embodiments of the invention, it may be a further phase of second galvanization (E) in which the object is subjected to a further galvanic treatment to obtain a greater brilliance of the shiny portion can be envisaged.
Pi? precisamente, nella fase di smaltatura, le porzioni della superficie superiore da colorare vengono riempite con lo smalto del colore prescelto. Dopo la posa dello smalto, eseguita a mano con un iniettore, l?operatore svolge un controllo visivo dell?omogeneit? della posa, apportando correzioni, qualora necessario. Segue un passo di ?sfiammatura?, ovvero di sottoposizione dell?oggetto, in particolare delle superfici o porzioni di superfici smaltate, a rapidi getti di fiamma per eliminare eventuali bolle d?aria presenti nello smalto. Pi? precisely, in the glazing phase, the portions of the upper surface to be colored are filled with the glaze of the chosen color. After the laying of the glaze, performed by hand with an injector, the operator carries out a visual check of the homogeneity. laying, making corrections if necessary. This is followed by a step of "torching", that is, of subjecting the object, in particular the surfaces or portions of glazed surfaces, to rapid jets of flame to eliminate any air bubbles present in the glaze.
L?asciugatura conclude la fase di smaltatura e consiste nell?attesa del tempo necessario alla catalizzazione dello smalto. Drying concludes the glazing phase and consists in waiting for the time necessary for the glaze to catalyze.
Nella forma di realizzazione preferita della presente invenzione, la fase di asciugatura avviene in appositi forni atti a velocizzare il processo di asciugatura; detti forni comprendono supporti girevoli ai quali gli oggetti appena smaltati vengono vincolati in maniera reversibile. La rotazione continua dei supporti e, conseguentemente degli oggetti smaltati, serve a evitare che lo smalto coli o si accumuli in maniera disomogenea sulla superficie smaltata. Questo strumento ? particolarmente utile e vantaggioso nel caso in cui l?oggetto abbia superfici curve, concave o convesse. In the preferred embodiment of the present invention, the drying step takes place in suitable ovens adapted to speed up the drying process; said ovens comprise revolving supports to which the newly enamelled objects are bound in a reversible manner. The continuous rotation of the supports and, consequently, of the enameled objects, serves to prevent the enamel from dripping or accumulating unevenly on the enameled surface. This tool? particularly useful and advantageous if the object has curved, concave or convex surfaces.
La fase di sabbiatura, vantaggiosamente, avviene in una comune macchina sabbiatrice a bassa pressione, preferibilmente utilizzando corindone bianco con grana 220 o simili. La sabbiatura avviene afferrando un perno provvisoriamente vincolato alla superficie inferiore (o posteriore) di detto oggetto. The sandblasting step advantageously takes place in a common low pressure sandblasting machine, preferably using white corundum with grain size 220 or the like. Sandblasting takes place by grasping a pin temporarily attached to the lower (or rear) surface of said object.
A seguito della sabbiatura tutto l?oggetto metallico smaltato presenta una finitura opaca. Following sandblasting, all the enameled metal object has a matte finish.
La galvanizzazione che segue ha lo scopo di conferire la finitura lucida alle sole porzioni non smaltate dell?oggetto. Essa consiste, come noto, nell?immersione di detto oggetto in vasche galvaniche per ottenere una finitura lucida (color oro, argento o simili) delle porzioni metalliche. The following galvanization has the purpose of giving the glossy finish only to the unglazed portions of the object. It consists, as known, in the immersion of said object in galvanic tanks to obtain a glossy finish (gold, silver or similar) of the metal portions.
I vantaggi offerti dalla presente invenzione sono evidenti alla luce della descrizione fin qui esposta e saranno ancora pi? chiari grazie alle figure annesse e alla relativa descrizione dettagliata. The advantages offered by the present invention are evident in the light of the description set out up to now and will be even more? clear thanks to the attached figures and the related detailed description.
Descrizione delle figure Description of the figures
L?invenzione verr? qui di seguito descritta in almeno una forma di realizzazione preferita a titolo esplicativo e non limitativo con l?ausilio delle figure annesse, nelle quali: The invention will come hereinafter described in at least one preferred embodiment for explanatory and non-limiting purposes with the aid of the attached figures, in which:
- FIGURA 1 mostra il diagramma di flusso che sottost? al metodo in oggetto. - FIGURA 2 illustra un esempio di oggetto 100 metallico realizzato secondo il metodo della presente invenzione. Fig. 2(a) ne mostra la superficie superiore 10, mentre Fig. 2(b) ne raffigura la superficie inferiore 20. - FIGURE 1 shows the flow chart below? to the method in question. - FIGURE 2 illustrates an example of a metal object 100 made according to the method of the present invention. Fig. 2 (a) shows the upper surface 10, while Fig. 2 (b) shows the lower surface 20.
Descrizione dettagliata dell?invenzione Detailed description of the invention
La presente invenzione verr? ora illustrata a titolo puramente esemplificativo ma non limitativo o vincolante, ricorrendo alle figure le quali illustrano alcune realizzazioni relativamente al presente concetto inventivo. The present invention will come now illustrated purely by way of example but not limiting or binding, with recourse to the figures which illustrate some embodiments relating to the present inventive concept.
Con riferimento alla FIG. 1 ? mostrato il processo fin qui descritto e oggetto delle prime cinque rivendicazioni allegate alla presente domanda di brevetto. With reference to FIG. 1? shown the process described up to now and object of the first five claims attached to the present patent application.
Un esempio di oggetto 100 realizzato secondo tale metodo ? invece rappresentato nella successiva Fig. 2. Da queste figure si evince che l?oggetto 100 ha una superficie superiore 10 ed una inferiore 20, oppure una superficie anteriore 10 ed una posteriore 20. An example of an object 100 made according to this method? instead shown in the following Fig. 2. From these figures it can be seen that the object 100 has an upper surface 10 and a lower surface 20, or a front surface 10 and a rear surface 20.
La superficie superiore, o anteriore 10, rimane a vista e costituisce la parte estetica dell?oggetto 110. La superficie inferiore o posteriore 20 ? destinata a rimanere nascosta quando l?oggetto 100 ? montato sul supporto previsto o appoggiato su una superficie. The upper or front surface 10 remains visible and constitutes the aesthetic part of the object 110. The lower or rear surface 20? destined to remain hidden when object 100? mounted on the intended support or placed on a surface.
L?oggetto 100 in questione, in un esempio particolare della presente invenzione, ? una fibbia per la chiusura di borse da donna. The object 100 in question, in a particular example of the present invention,? a buckle for closing women's bags.
Pi? in generale la forma di realizzazione preferita della presente invenzione ? dedicata all?ambito della moda e degli accessori di capi di abbigliamento e pelletteria, gioielleria e oggettistica decorativa. Pi? in general the preferred embodiment of the present invention? dedicated to the field of fashion and accessories for clothing and leather goods, jewelery and decorative objects.
Come si vede dalla Fig. 2(a), la superficie superiore o anteriore 10 dell?oggetto 100 ? costituita da vani destinati ad accogliere lo smalto che costituiranno la porzione opaca 12 e da reticoli che costituiranno la porzione lucida. As can be seen from Fig. 2 (a), the upper or anterior surface 10 of the object 100? consisting of compartments intended to accommodate the glaze which will form the opaque portion 12 and of grids which will form the shiny portion.
Come si vede dalla Fig. 2(b) la superficie inferiore o posteriore 20 dell?oggetto 100 ? dotata di almeno un foro 21 atto ad alloggiare un perno di presa 22 reversibilmente impegnabile in detto foro 21. Tale perno 22 ? utile all?operatore che esegue il metodo su descritto per maneggiare l?oggetto 100 senza toccarne le superfici n? superiore 10 n? inferiore 20. As can be seen from Fig. 2 (b) the lower or rear surface 20 of the object 100? provided with at least one hole 21 suitable for housing a gripping pin 22 which can be reversibly engaged in said hole 21. Such pin 22? useful to the operator who carries out the method described above to handle the object 100 without touching its surfaces n? higher than 10 n? lower 20.
Quando la lavorazione ? completa il perno 22verr? semplicemente disconnesso dalla superficie posteriore 20 dell?oggetto 100 e l?oggetto 100 sar? applicabile alla sua superficie di destinazione finale. When is the processing? complete the pin 22verr? simply disconnected from the rear surface 20 of the object 100 and the object 100 will be? applicable to its final destination area.
In una forma di realizzazione preferita, infine, l?oggetto grezzo ? costituito da un pezzo grezzo in ottone o zama ottenuto mediante microfusione oppure stampaggio a caldo oppure stampaggio a freddo, oppure costruzione a CNC. ? infine chiaro che all?invenzione fin qui descritta possono essere apportate modifiche, aggiunte o varianti ovvie per un tecnico del ramo, senza per questo fuoriuscire dall?ambito di tutela che ? fornito dalle rivendicazioni annesse. Finally, in a preferred embodiment, the raw object? consisting of a raw piece in brass or zamak obtained by casting or hot molding or cold molding, or CNC construction. ? finally, it is clear that modifications, additions or variants that are obvious to a person skilled in the art can be made to the invention described up to now, without thereby departing from the scope of protection. provided by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102020000002725A IT202000002725A1 (en) | 2020-02-12 | 2020-02-12 | METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102020000002725A IT202000002725A1 (en) | 2020-02-12 | 2020-02-12 | METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT202000002725A1 true IT202000002725A1 (en) | 2021-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT102020000002725A IT202000002725A1 (en) | 2020-02-12 | 2020-02-12 | METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS |
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| IT (1) | IT202000002725A1 (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB180783A (en) | 1921-03-12 | 1922-06-08 | William Goodacre & Sons Ltd | Improvements in or relating to the manufacture of coir yarn matting |
| US1993196A (en) * | 1931-03-13 | 1935-03-05 | Porcelain Enamel And Mfg Compa | Production of enameled articles carrying a gloss and matt finish |
| US2021819A (en) * | 1931-03-13 | 1935-11-19 | Porcelain Enamel And Mfg Compa | Production of porcelain enameled articles of changeable color |
| US2021820A (en) * | 1931-05-06 | 1935-11-19 | Porcelain Enamel And Mfg Compa | Production of articles having a multicolor finish |
| GB2005721A (en) * | 1977-09-06 | 1979-04-25 | Blasberg Gmbh & Co Kg Friedr | Method of partially enamelling articles of stainless steel |
| TW207971B (en) | 1993-02-26 | 1993-06-21 | Jinn-Yuh Chen | Manufacturing process of a stringless bamboo matting |
| EP1980417A2 (en) * | 2007-04-10 | 2008-10-15 | Duty Free Group (China) Limited | Method for production of decorative article and decorative article produced therefrom |
| WO2017088083A1 (en) | 2015-11-27 | 2017-06-01 | 江苏宝泽高分子材料股份有限公司 | Water-based polishing treating agent for synthetic leather and preparation method therefor |
| CN206509872U (en) | 2017-02-14 | 2017-09-22 | 青岛津尚重工有限公司 | A kind of Metal Surface Roughness sanding apparatus |
| WO2019004963A2 (en) | 2017-03-30 | 2019-01-03 | 5K Yuzey Teknolojileri Orm. Urn. Mob. San. Ve Tic. A. S. | Method for manufacturing matt lacquered surface, wooden base furniture and door panels by use of excimer method |
| CN107411254B (en) * | 2017-06-23 | 2019-11-29 | 广州番禺职业技术学院 | A kind of preparation method of the transparent enamelled jewellery of hollow out |
-
2020
- 2020-02-12 IT IT102020000002725A patent/IT202000002725A1/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB180783A (en) | 1921-03-12 | 1922-06-08 | William Goodacre & Sons Ltd | Improvements in or relating to the manufacture of coir yarn matting |
| US1993196A (en) * | 1931-03-13 | 1935-03-05 | Porcelain Enamel And Mfg Compa | Production of enameled articles carrying a gloss and matt finish |
| US2021819A (en) * | 1931-03-13 | 1935-11-19 | Porcelain Enamel And Mfg Compa | Production of porcelain enameled articles of changeable color |
| US2021820A (en) * | 1931-05-06 | 1935-11-19 | Porcelain Enamel And Mfg Compa | Production of articles having a multicolor finish |
| GB2005721A (en) * | 1977-09-06 | 1979-04-25 | Blasberg Gmbh & Co Kg Friedr | Method of partially enamelling articles of stainless steel |
| TW207971B (en) | 1993-02-26 | 1993-06-21 | Jinn-Yuh Chen | Manufacturing process of a stringless bamboo matting |
| EP1980417A2 (en) * | 2007-04-10 | 2008-10-15 | Duty Free Group (China) Limited | Method for production of decorative article and decorative article produced therefrom |
| WO2017088083A1 (en) | 2015-11-27 | 2017-06-01 | 江苏宝泽高分子材料股份有限公司 | Water-based polishing treating agent for synthetic leather and preparation method therefor |
| CN206509872U (en) | 2017-02-14 | 2017-09-22 | 青岛津尚重工有限公司 | A kind of Metal Surface Roughness sanding apparatus |
| WO2019004963A2 (en) | 2017-03-30 | 2019-01-03 | 5K Yuzey Teknolojileri Orm. Urn. Mob. San. Ve Tic. A. S. | Method for manufacturing matt lacquered surface, wooden base furniture and door panels by use of excimer method |
| CN107411254B (en) * | 2017-06-23 | 2019-11-29 | 广州番禺职业技术学院 | A kind of preparation method of the transparent enamelled jewellery of hollow out |
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