Aluminum Alloy Sign Blanks Manufacturing Process
1. Molding machine.The machine is used to process the paint, and the installation size is uniform and can be mass-produced.The processing of the instrument spray paint is strict to the size requirement, it needs the experienced forceps, the milling workers, the conditional can use the nc drilling machine.
2. In addition to the oil.In order to make the surface of the aluminum sign blanks have a certain affinity with the printing coating, the oil can be removed from the surface of the sign blanks, and the oil can be removed with a fine soft sawdust, and then the organic solvent will be used for oil.In machining, oil can be chemically deoiled by organic solvents or alkaline solutions.
3. Polishing.The sign blanks surface has scratches, should first scrape a layer of putty, make it smooth, and according to customer's request choice is mechanical polishing, chemical polishing, or electrochemical polishing.
4. Spray primer.Due to the poor combination of aluminum alloy and surface paint and printing ink, it needs to spray a layer of about 0.01mm thick epoxy zinc yellow primer.
5. Spray paint.Spray the appropriate color of amino paint or acrylic paint according to customer's requirement.For light color paint, especially white paint, its drying temperature and drying time should be strictly controlled, otherwise white paint yellowing. 【Aluminum alloy sign blanks】
6. Screen printing.The overall requirements of the printed sign blanks panel are: the image location is accurate and clear, the line edges are neat and the ink is firm.
7. Spray varnish.Brush painting can be used when the requirement is not high, paint can choose H type water-soluble acrylic paint or amino paint.
8. Packaging.The sign blanks is heavy and easy to knock on each other, but it can be placed in the finished product to protect its surface.
