Raw material belt is mainly used for pipeline sealing. It is the main material to control pipeline leakage. At present, leakage is a common phenomenon. There are still many examples in life, such as the leakage of tap water and gas, which often brings many troubles and safety problems to people; once the leakage occurs in industries such as pressure vessels, pipes, reactors, valves, hydraulic pressures, transportation tools, energy and materials will be wasted, resulting in the failure of normal operation of equipment, which may lead to equipment scrap, the whole factory or department. It has fallen into shutdown, casualties, safety problems and environmental pollution. Because of the above reasons, people try their best to prevent and eliminate leakage in production practice, so the emergence of raw meal belt will solve these leakage problems.