The operation of the pre-coating laminating machine includes three parts: gluing, drying, and hot pressing. The operation is relatively high. The advantage is that the quality of the finished product is reliable. The fatal disadvantage of the oil-based glue is that it produces gases that affect human health. This technology has been completely banned in developed countries such as Europe and the United States. Water-based adhesives are more environmentally friendly than oily ones, and their relative oily costs are higher.
        The three major structures of the laminating machine are introduced as follows:
        1. Automatic input of printed matter
        The automatic conveying mechanism can ensure that the printed products do not overlap and enter the composite part at an equal distance during transmission. Generally, pneumatic or friction methods are used to achieve control. The conveying is accurate and high precision. The same requirements can also be met when printed products with small composite width.
        2. Hot-pressing compound mechanism of pre-coating laminating machine
        The hot pressing compound mechanism includes a compound roller group and a calender roller group. The compound roller group is composed of heating pressure roller and silicone pressure roller. The hot pressure roller is a hollow roller, which is equipped with a heating device inside, and the surface is forged with hard chrome, and is polished and refined. The temperature of the hot roller is tracked by the sensor and corrected by the computer at any time. The compound pressure is adjusted by an eccentric cam mechanism. Stepless adjustment. The calender roller group is basically the same as the composite roller group, that is, it is composed of a chrome-plated pressure roller and a silicone pressure roller, but without a heating device. The main function of the calender roller group is: after the pre-coated plastic film and the printed matter are compounded by the composite roller group, the surface brightness is not high. After the secondary extrusion of the calender roller group, the surface brightness and adhesion strength are greatly improved.
        3. Transmission system of pre-coating laminating machine

        The transmission system of the pre-coating film laminating machine is driven by a high-power motor controlled by a computer. After being decelerated by a first gear, it is driven by a three-stage chain to drive the movement of the paper feed mechanism and the rotation of the silicone pressure roller of the composite part and the calendering mechanism. . The pressure roller set maintains a suitable working pressure under the action of steplessly adjusted pressure.