The working principle of BOPP sealing tape coating machine is to place the wound object in the center of the turntable, start the turntable motor to rotate, and naturally drive the turntable to rotate, so that the object can realize the peripheral winding film machine. At the same time, the elevator motor also starts to drive the whole assembly of the winding and binding machine to move up and down to achieve the winding in the height direction of the object, which realizes the winding and packaging of the whole appearance of the object.

The coating of base paper by belt coater can be divided into single-sided coating and double-sided coating. Single side coating is only on one side of the base paper coating, such as single coated paper; double side coating is on both sides of the base paper coated with paint, such as double coated paper. Both single-sided coated paper and double-sided coated paper can be divided into single-layer coating (one-time coating) and double-layer coating (two-time coating). Double layer coating is mostly used to produce coated printing paper with high quality requirements and large coating amount. Double coated paper has better printability than single coated paper, which is an effective way to improve the quality of coated paper.

The working process of the tape coater: apply a layer of glue, paint or ink with specific functions on the rolled base materials, such as paper, cloth, leather, aluminum foil, plastic film, etc., and dry them before winding.