where to buy metal sheets online steel supply

 

In today's metal plate or non-standard version of the silk screen printing ink it can be used more, but the choice of a suitable ink (paint) is not easy. Common signs screen printing inks are the following:1 baking enamel: is a single liquid-based formulation, when heated cross-linking, preferably storage performance. It can be stored for six months to a year. Have a good finish, wear resistance, chemical and weather resistance, and therefore the most commonly used. Alkyd, acrylate, polyester and having these characteristics. Epoxy resin powder tends to fracture and generally not for outdoor use, but it dries quickly, has good chemical resistance properties.胡平衡 alkyd enamel with physical characteristics, such as chemical resistance and weather resistance, formability, hardness and gloss, is the most widely used.2, air dried enamels: drunk acid commonly made, starting oxygen in the air, after the reaction to achieve cure. Drunk acid enamels performance from the use of oil type and quantity. The longer the drying time of oil, enamel drying time is long. When the speed of the drying conditions, the drying time is long paint generally have good surface durability. The paint used for outdoor metal plate.3, melting volatile ink: solvent evaporated to rely on only in order to achieve dry. The final properties of the coating material according to formulation as liquids before performance inherent in a given polymer. Such a thermoplastic polymer containing acrylic acid. In order to play the main part of the screen printing ink is usually often subject to dissolution damage. Some gasoline and alcohol-insoluble acrylic acid, wherein the membrane surface can be in contact with, and thus, a thermoplastic acrylic, vinyl polymers, and other soluble parts of the ink they use based on a plastic substrate.4, a two-component ink: common epoxy or polyurethane means that although there are many other species. Dual fluid systems are often in the timber is to save energy in the most sensible choice, its high quality of the coating, but mixed inconvenient. Also according to the product's use should be selected, if the product could be used in outdoor, but also note there is some flexibility, so the choice of an aliphatic hydrocarbon as the main urethane ink. Now a two-component epoxy resin ink market is almost the same as baking enamels performance, but not good enough formability.5, ink additives: Like other inks, by screen printing metal inks may also contain additives, which is produced when the intake of a small amount of chemical agents to improve the performance of the ink film, and some can accelerate the curing or initiating curing, while others can be the bubble burst, uniform quality ink, reducing the possibility of the conjunctiva. Manufacturers pay additives mixed with the ink, depending on the recipe together, printers are required to dilute the ink suitable for printing consistency. Fourth, Printing: screen printing quality, ink layer thickness and the thickness of the screen, the ink viscosity, hard charging, angle blade plate making process are closely related.1, the wire version and location: aluminum material three-point boundary positioning. When color printing, the first light-colored print, then printed dark.2, the distance between the plate and the substrate is 1-2 mm from the size of the screen and select relevant, good stretch nylon mesh, stretches, generally 2-3 mm.3, blade with urethane rubber sheet, a hardness of 70-75 degrees, a thickness of 8-9 mm, a blade angle of 70 degrees is appropriate printing, blade speed should be uniform linear motion.4, appropriate protective films: label after printing in order to avoid cutting and trauma caused during shipment, to be affixed to the surface of the transparent pressure-sensitive adhesive protective film on the back of double-sided tape to paste.5, cutting: cutting with a small bed, side molding can be used to locate or positioning hole punching.2 classification edit screen printing plate

Aluminum oxide color printing plate

Anodized aluminum flat plate is a plate, its application is more extensive. High brightness, high hardness, good wear resistance characteristics. Traditional production process is roughly: mechanical polishing, chemical polishing, oxidation; indirect plate making screen version, plus lithopone paste