Is there a special treasure that plastic is resistant to temperature changes and chemical reaction-resistant as well. Difficult to smudge and stain occurred probably after image through heat or pressure, just once. When the cool down is very hard. Do not change the shape and the light has not. But if the high temperature, it will crack and fires as the black ashes. This type of plastic molecules to link up the main body held together tightly. Molecular binding force between very strong That is, a cross-connection between cable chains of molecules of the polymer (polymer chains among cross linking) for this reason, after the plastic cold water until the curing, it is not possible to make it soft again using heat. To make this type of plastic, is variations require high heat and for the most part want to pressure. Thermosetting plastics include:
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