TH79686A - Pre-coated metal sheets and methods for producing pre-coated metal sheets - Google Patents

Abstract

DC60 (17/08/16) Pre-coated metal sheets, which are manufactured with multiple coats at the same time and the same manufacturing process, are provided with color protection, pattern and adhesion. Between the improved coating layers In pre-coated metal sheets The mean roughness at the center line Ra in the coating film joints is not less than 0.3 μm and the greatest height from the line. Prepared as well, it is (1) clear coated metal top plate. That consists of a clear layer Is the top layer It is a mean mean at 0.3 to 0.7 μm diameter Ra and has excellent weather resistance and (2) pre-coated metal sheets capable of processing Excellent processing and corrosion resistance There is not less than 30% by mass of anti-rust pigments. Correct 17/08/16 Pre-coated metal sheets which are produced by multi-layer coating at the same time and the same manufacturing process is prepared. With protection against different colors, patterns and adherence Between the improved coating layers In pre-coated metal sheets The mean roughness at the center line Ra in the coating film joints is not less than 0.3 μm and the greatest height from the line. Prepared as well, it is (1) clear coated metal top plate. That consists of a clear layer Is the top layer It is a mean mean at 0.3 to 0.7 μm diameter Ra and has excellent weather resistance and (2) pre-coated metal sheets capable of processing Excellent processing and corrosion resistance There is not less than 30% by mass of anti-rust pigment ................................................... ............................................. Pre-coated metal sheets, which are manufactured by multi-layer coatings at the same time, prevent paint, stain and improve adhesion between coats Clear finished metal sheet on top Which has better weather durability Pre-coated metal sheets have both formability and Corrosion fastness And a method of producing the same thing has been provided Coated metal sheets Preventing paint, streaking and improving adhesion between coats has been defined. Characteristic provided that the average roughness at the center Ra of the formed coating joint. By simultaneous multi-layer coating of 0.3 μm or more And the height of the most The wavelength of the junction from the center line observed under 500 times magnification is not greater than 50% of the thickness measured from the center line of the layer to be positioned on the junction. Clear top, which has better weather resistance, has the characteristics that The average coarse line at the center Ra of the junction between the top clear layer and the lower layer is 0.3 to 0.7 μm. The finished sheet metal has both formability and durability. Corrosion is characterized by the lower coating layer being formed by the same coating system. Multiple layers with anti-rust pigments 30% by weight Or more on average Where the top coating layer It has the same anti-rust pigment as the lower coating's anti-rust pigment with low average capacity. Than the average capacity of the bottom coating and the gradient of the density gradually decreases as it distant from the immediate vicinity of the joint with the bottom coating. And by that The mean coarse at the center line Ra of the coating joints is 0.3 to 0.7 μm.

Claims (9)

Disclaimer (all) which will not appear on the advertisement page: edit 17/08/16 1. Pre-coated metal sheets that are produced by coating at the same time in multiple layers and having Superior formability and corrosion resistance Included The lower and upper layers are coated with sheet metal by the Multiple coatings where the bottom layer has an average of 30% or more anti-rust pigments and the top coat has anti-rust pigments, the same anti-rust pigments in Bottom layer coating with average capacity lower than the bottom layer, and By gradients, the density gradually decreases further away from in the vicinity of the joint with the layer. Bottom coating And mean roughness at the midline Ra of the joint between the bottom coating and The top coat is 0.3 to 0.7 μm where the anti-rust pigment is not present on the surface of the top coat. 2. Prepainted metal sheets as stated in Article 1, which also includes a layer of paint. Primer under two or more coats that have been formed using a time coating system. The same multiple layers 3. Prefabricated metal plates that are manufactured by multi-layer coatings consisting of sheet metal that have been formed on the surface to have two or more layers of coatings using Multi-layer coating system at the same time The finished coated metal sheets are characterized by that The mean multiplicity at the center Ra of the groove per coating is 0.3 to 0.7 μm, and where The maximum height of the junction waveform from the center line observed at 500 times magnification is 50% or less of the layer thickness, positioned over the junction at Measured from the center line thereof The waveforms are spaced from 0.5 to 1 mm. 4. The finished sheet metal, as described in Clause 3, also consists of paint. Primer under two or more coats that have been formed using a time coating system. Single layer 5. Prepainted metal sheets as described in Clause 3, which are adjacent to the floor. It is the top layer and the bottom layer that connects to the top layer. 6. Clear finish coated metal sheet on top. That consists of at least a sheet of metal One sheet and two or more layers of coatings have been formed on such a sheet using a system. Multi-layer coating at the same time The finished sheet metal has a unique coating that It has a top, translucent or semi-transparent layer and a bottom layer attached to the top transparent layer, and Where the mean roughness at the center Ra of the junction between the top clear layer and the bottom layer at Noticeable with a magnification of 500 times 0.3 to 0.7 μm, the wavelength is 0.5 to 1 mm. 7. Clear top coated sheet metal as described in Clause 6 where the coated layer The bottom and one or both layers of the top clear layer consist of a part that reacts to the entire layer. Resin coating of the bottom coating and resin coating of the top clear layer. 8. The clear top-coat finish metal sheet as described in Clause 6, where it also consists of two or more layers of primer underneath which have been formed using the system. Multi-layer coating at the same time .................................................. ...................... 1. Pre-coated metal sheets that are manufactured by coating at the same time in several layers. It consists of a sheet of metal formed on a surface to have two or more layers of coating by Multi-layer coating system at the same time The finished coating is characterized by the mean roughness at the center Ra of the groove per coating of 0.3 μm or more, and Where the greatest height of the junction waveform from the center line observed at 500 times magnification is 50% or less of the positioned layer thickness. Above the junction measured from the center line 2. Pre-coated metal sheets as described in Clause 1, which also contain a primer. Under two or more coats that have been formed using a multi-layer coating system at the same time. 3.Production method of prefabricated sheet metal that consists of painting on the surface of the sheet metal Using a multi-layer coating system at the same time The method for producing such finished sheet metal has Characteristic by adding a leveler to the top layer color to adjust the difference in surface tension. The lower and the upper layers are 1.2 μN / m, less than 5 μN / m, and for the layers, the color that is the difference between the largest and the smallest. of Measured surface tension, which can be obtained when measuring surface tension five times or less than 2 μm / m. 4. Method for producing prefabricated sheet metal that consists of painting on the surface of the sheet metal. Using a multi-layer coating system at the same time The method for producing such finished sheet metal has Characteristic by adding a leveler to the top layer color to adjust the difference in surface tension. The lower and upper layers are 0.3 μN / m, less than 3.7 μN / m, and for the layers, the colors that differ between the largest and the smallest. of Measured surface tension, which can be obtained when measuring surface tension five times or less than 2 μm / m. 5. A clear top coated metal sheet containing at least one sheet and Two or more layers of coatings that have been formed on such a sheet using a coating system in The same time multiple layers It is unique in which the coating layer consists of a transparent top layer, translucent or The semi-translucent and lower coatings are attached to the top clear layers and where the average roughness at the center Ra of the joint between the top and bottom layers is 0.3 to 0.7 μm. 6. Clear top coat plaque, as described in Clause 5, where one or both lower and upper layers are composed of a mixture. That react with both Color resin of that layer and color resin of the other layer 7. The clear top coat, as described in Claim 5 or 6, which also has two or more layers of primer under the top coat using multiple coats of the coating system. 8. Prepainted metal sheets that are produced by coating at the same time in several layers. And has superior formability and corrosion resistance, characterized by that It consists of a lower coating layer and a top coating layer, the upper layer of which is formed by a metal sheet. Multi-layer coating at the same time The bottom coating contains an average of 30% or more anti-rust pigments. The top coat contains anti-rust pigments. In the lower coats, the average capacity is lower than the lower coats. And by gradients, the density gradually Fell away from in close proximity to the joint with Bottom coating layer And mean roughness at the center Ra of the joints between the lower coatings And the top coat is 0.3 to 0.7 μm. 9. Clear top coated metal sheet as described in Clause 8, which also has a Primer under two or more coats, formed by multiple coats of the coat system 1. 0. The finished sheet metal fabrication method that was produced by the time coating system. The method of fabrication of the finished coated sheet is characterized by making the anti-rust pigment in the The bottom coating spreads in the top coat when drying the pigment containing the bottom coating. With the completely protective pigment and the top coat layer that was formed by the coating at the same time. Multiple layers to provide the average density of the protective pigment completely in the bottom layer of the formed coating. By baking 30% or more and making the protective pigment as close as the protective pigment in the layer. The bottom layer is present in the upper tier, with the average capacity lower than the lower class average. And by gradients, the density gradually Fell away from in the vicinity of the joint with Bottom layer and by adding a leveler to the top coat or the top coat and the Bottom coating to average roughness at the center Ra of the joints between the lower coatings. And the top coat is 0.3 to 0.7 μm.