On May 30, 1928 in United Kingdom and the United States apply drew developed a light, a pressure that is adhesive, initially an attempt is not sticky enough, and drew was told: "take this thing back to your bosses in Scotland, asking them to put some more glue! "(" Scottish "meaning" stingy, "but, during the great depression, they found hundreds of uses for this tape, from repairing the coat to protect striking egg it is useful. Why tape sticky? Of course because it is coated with a layer of adhesive on the surface! Earliest adhesives derived from animals and plants, in the 19th century, rubber is the main ingredient of adhesive and modern polymer is widely applied. Adhesives can stick to things, is because their molecules and forming bonds between molecules to connect, this bond can be firmly bonded to the molecule together. Adhesive composition, different brands, different types, there are a variety of polymers.