The structural system of the laminator mainly includes four parts: loading and unloading system, heating system, pressure system and protection system. The loading and unloading system consists of a sealing head, a carrier, an oil tank, an oil cylinder, and a solenoid valve. Its main function is to use the gas-liquid device as the conversion power to raise and lower the sealing pressure head carrying the product. The lifting movement of the sealing head is controlled by a manual reversing valve. The system rises and falls smoothly and vertically, which is conducive to the closing and sealing between the sealing head and the sealed container.