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Tin is a soft, malleable, ductile and highly crystalline silvery-white metal. When a bar of tin is bent a crackling sound known as the "tin cry" can be heard from the twinning of the crystals. Tin melts at about 232 °C (450 °F) the lowest in group 14. The melting point is further lowered to 177.3 °C (351.1 °F) for 11 nm particles. Commercial grades of tin (99.8% tin content) resist transformation because of the inhibiting effect of small amounts of bismuth, antimony, lead, and silver present as impurities. Alloying elements such as copper, antimony, bismuth, cadmium, and silver increase the hardness of tin. Tin easily forms hard, brittle intermetallic phases that are typically undesirable. It does not mix into a solution with most metals and elements so tin does not have much solid solubility. Tin mixes well with bismuth, gallium, lead, thallium and zinc forming simple eutectic systems. Tin resists corrosion from water, but can be corroded by acids and alkalis. Tin can be highly polished and is used as a protective coat for other metals, a protective oxide (passivation) layer prevents further oxidation. Tin acts as a catalyst triggering a chemical reaction of a solution containing oxygen and helps to increase the speed of the chemical reaction that results. Therefore, tin signs are very stable in daily life.
Home decoration tin signs include garage metal signs, animal tin signs, food tin signs, wall decoration tin signs, etc. Metal electroplating and electroforming nameplates are also known as gold stacking signs. It is a method of using screen printing or photosensitive plate making to coat the plate and then use electroplating. Let the text and lines pass through the pre-plated, cast copper, nickel, gold-plated books to form raised gold-plated gold medals. It can complete different patterns and texts of various fonts according to the requirements of users. The products are durable and non-corrosive, not afraid of rain and sun, wear-resistant and non-fading. Beautiful and generous, with bright colors, clear patterns and good brightness, it is an indispensable car body sticker for various electronic products, automobiles, household appliances, etc.
The thermal transfer metal sign is a special panel produced by the surface treatment process of the metal plate, and then the color picture you designed is printed on the transfer paper by inkjet printing, and then reversed to the metal plate by heating. 1) Protective layer. It uses 300 mesh screen printing transparent thermal transfer ink (you can use diluent to dilute to a suitable viscosity if the ink viscosity is too large), and print the entire pattern with transparent ink, which is mainly used to protect the pattern layer and make it wear-resistant and durable. It is chemically resistant to washing, and acts as a positioning pattern. It can be dried naturally or at low temperature; 2) Pattern layer. The pattern layer can be printed with thermal transfer color ink once, and the screen mesh used is 300 meshes. The viscosity can be adjusted with diluent according to the actual situation. The order of printing is mainly based on the color from dark to light. Pay attention to the accurate positioning, so as to avoid deviation when printing the luminous pattern. It can be dried naturally or at low temperature; 3) Light-emitting layer. The luminescent material and the transparent thermal transfer ink are formulated into a luminescent ink at a ratio of 1:1, and the viscosity is adjusted with a diluent; 4) Overlay. Since the pattern is printed with a luminescent material, a white reflective layer must be printed after the pattern to add a personalized effect. We used a white thermal transfer ink to screen-print an overlay over the entire pattern with a print overcoat; 5) Adhesive layer. Finally, use a 100-200 mesh screen to print the hot melt adhesive layer to ensure that the entire pattern is covered. Mainly used for bonding patterns and fabrics; 6) Packaging of signs. Pack the dried thermal transfer logo with packaging film and place it flat.