TWI448335B - Environmental protection coating processing method - Google Patents

Description

Environmentally friendly coating processing method

The invention relates to an environmental protection coating processing method.

According to the traditional ingots and vacuum plating, some of the inevitable defects, the gloss is not high, the electroplating manufacturers cause environmental damage due to pollution problems, and the corrosion resistance and hardness of the existing sprayed mirrors have a certain degree. Missing, because most of the weak reducing agents used in the spraying process have a long reaction time, they have to lose a lot of raw materials, resulting in waste of raw materials and cost, slow production and other problems, and liquids. The method of spraying requires a variety of different solvents, which are prone to environmental problems and less suitable for environmental protection.

The above-mentioned conventional electroplating technology or liquid spraying method has a certain degree of lack of corrosion resistance and hardness, and a plurality of solvents are used in the spraying process, which is liable to cause environmental problems, and is less suitable for environmental protection. .

The main object of the present invention is to provide an environmentally friendly coating processing method, which performs a powder coating primer on the surface of a workpiece to be processed, and then performs a silver mirror reaction process, and applies a protective layer of the topcoat after the silver mirror reaction process. The surface of the workpiece does not contain heavy metals, and it is environmentally friendly, thick and adherent, and has good coating properties.

In order to achieve the purpose of the foregoing disclosure, the environmentally friendly coating processing method of the invention has the surface of the workpiece to be processed having a metallic luster without causing environmental pollution, and the environmentally friendly coating processing method is a pretreatment process for the workpiece to be processed. , the action of drying the workpiece after the pre-treatment process The dried workpiece is subjected to powder coating, and the workpiece with the powder topcoat adhered to the surface is subjected to a baking process, and the baked workpiece is subjected to a silver mirror reaction process to coat the workpiece subjected to the silver mirror reaction process. The protective layer of the top coat, the workpiece is adhered with the protective layer of the top layer and then subjected to the baking process, and the workpiece is baked to be the finished product; the workpiece to be processed is applied after the powder is applied to adhere the primer. Then the silver mirror reaction process is carried out, and then the processing method of the top coat protective layer is applied, so that the surface of the workpiece does not contain heavy metal, which is very environmentally friendly; and has a metal mirror effect of electroplating, and can also add different colors required for different color materials, and is beautiful. Generous; and the coating film surface thickness and adhesion reached 100%, the coating film is excellent; in addition, this processing method can also be fully automated line and manual line mass production, the production yield rate increased by more than 95% By.

1‧‧‧Pre-treatment process

2‧‧‧Drying

3‧‧‧ powder coating primer

4‧‧‧ baking process

5‧‧‧Silver mirror reaction process

6‧‧‧ baking process

7‧‧‧Face paint protection layer

8‧‧‧ baking process

9‧‧‧ finished product

First: Schematic diagram of the surface processing flow of the present invention

The environmental protection coating processing method of the invention is mainly used for surface coating of the workpiece to be processed, and the workpiece to be processed can be metal, plastic, etc.; the following steps are included: Step 1: Pretreatment process for processing the workpiece; Step 2: The workpiece after the pretreatment process is dried; step 3: powder coating the workpiece after drying to adhere the primer; step 4: baking the workpiece after the powder coating primer The action of the process hardens the surface paint attached to the workpiece; step 5: the workpiece after baking is subjected to a silver mirror reaction process; and step 6: the step of the silver mirror reaction process is followed by the step of baking, the baking temperature Baking for 15~30 minutes between 65 degrees and 100 degrees; Step 7: coating the workpiece after the silver mirror reaction process and baking to coat the topcoat to adhere the topcoat, the topcoat can be tinted , can add different color materials to call out the different colors needed; Step 8: The workpiece after the protective layer of the top coat is baked and the finished product is completed.

Among them, the powder coating paint uses a solid resin as a basic raw material, and the paint is melted, expanded, and reacted with other components to form a chemical crosslink, thereby forming a coating film of a higher molecular weight reaction. The newly formed coating film has good stability to heat, and even if it is heated, it does not soften into a liquid state. Due to the rheological property of such a resin, a surface of a coating film such as a liquid paint can be produced and have the same or It is often better than the performance that can be provided by electrophoretic coating, and the powder coating does not need to be used with the solvent. The powder coated coating can be recycled and reused, so it is more environmentally friendly.

The silver mirror reaction process, also known as nano-spraying or NSP mid-coating, has the following processes: firstly, the pre-staining treatment is performed, then the spraying reaction layer is sprayed on the spraying equipment, followed by pure water washing, and finally drying is completed; in this embodiment The nano-spraying is performed by using a conductor silver ion reaction.

The top coat protective layer can be applied by a coating technique such as powder coating, liquid coating or electrophoretic coating.

The invention relates to an environmentally-friendly coating processing method, which is a method for processing a silver mirror reaction process after a powder coating primer, and then attaching a protective layer of a top coat, so that the surface does not contain heavy metals, is very environmentally friendly; and has an electroplated metal Mirror effect, can also add different color materials to call out the different colors required, beautiful and generous; and the coating film surface thickness and adhesion to 100%, the film moisture is excellent; another, this processing method can also Automatic line and manual line mass production, production yield increase of more than 95%.

In summary, it is understood that the present invention is novel, and the present invention is not found in any publication, and is in compliance with the provisions of Articles 21 and 22 of the Patent Law.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. That is, the equivalent changes and modifications made by the invention in accordance with the scope of the invention are still within the scope of the invention.

1‧‧‧Pre-treatment process

2‧‧‧Drying

3‧‧‧ powder coating primer

4‧‧‧ baking process

5‧‧‧Silver mirror reaction process

6‧‧‧ baking process

7‧‧‧Face paint protection layer

8‧‧‧ baking process

9‧‧‧ finished product

Claims (3)

An environmentally-friendly coating processing method mainly for surface coating of a workpiece to be processed, characterized in that the method comprises the following steps: Step 1: Pre-treating the workpiece to be processed; Step 2: Drying the pre-treated workpiece Action; Step 3: The workpiece after the drying operation is powder coated to adhere the primer, and the powder coating is made of solid resin as a basic material, and the coating is melted and expanded once heated and baked. And forming a coating film with a higher molecular weight reaction by reacting with other components or chemically cross-linking; step 4: baking the workpiece after the powder coating primer; step 5: baking the workpiece The silver mirror reaction process is performed, and the silver mirror reaction process is performed by pre-staining treatment, and then the reaction layer is sprayed by using a spraying device, followed by pure water cleaning, and finally drying is completed; step 6: the workpiece subjected to the silver mirror reaction process is subsequently processed. Baking process; Step 7: coating the workpiece after the silver mirror reaction process and baking the topcoat protective layer; Step 8: Coating the surface Workpiece protective layer and baked to complete the operation of the production process finished. For example, the environmental protection coating processing method according to the first aspect of the patent application, wherein the top coat protective layer can be applied by a coating technique such as powder coating, liquid coating, or electrophoretic coating. For example, in the environmental protection coating processing method described in claim 1, wherein the topcoat protective layer, the topcoat can be tinted, and different colorants can be added to call out different colors required.