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A mug of coffee with cream. A mug is a type of cup, [1] a drinking vessel usually intended for hot drinks such as: coffee, hot chocolate, or tea. Mugs usually have handles and hold a larger amount of fluid than other types of cups such as teacups or coffee cups. Typically, a mug holds approximately 250–350 ml (8–12 US fl oz) of liquid. [2]
Limoges enamel was usually applied on a copper base, but also sometimes on silver or gold. [5] Preservation is often excellent due to the toughness of the material employed, [5] and the cheaper Limoges works on copper have survived at a far greater rate than courtly work on precious metals, which were nearly all recycled for their materials at some point.
Usually made of plastic, the first patent for a coffee cup lid design was filed in 1967 and focused on creating a tight seal between the cup and the lid to reduce leaking and a vent hole to allow steam to escape. [15] [16] [17] However, there was no opening for drinking, and the consumer would have to tear into the lid. [18]
Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 °C (1,380 and 1,560 °F). The powder melts, flows, and then hardens to a smooth, durable vitreous coating.
All proper uses of the term "enamel" refer to glass made into some flexible form, put into place on an object in another material, and then melted by heat to fuse them with the object. It is called vitreous enamel or just "enamel" when used on metal surfaces, and "enamelled" overglaze decoration when on pottery, especially on porcelain. Here ...
The most important characteristic of porcelain enamel, from an industrial perspective, is its resistance to corrosion. [3] Mild steel is used in almost every industry and a huge array of products; porcelain enamel is a very economic way of protecting this, and other chemically vulnerable materials, from corrosion.
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