After the laminator is adjusted, the pre-processed printed matter is sent to the paper feeding mechanism for lamination, and samples are taken for inspection. Use a small amount of printed matter to inspect before laminating, so as not to cause a lot of waste. After passing the inspection, mass production can be carried out. The method of using the film inspection is as follows:
        1. Tear off the corner of the proof sheet completed by the lamination in the width direction, press and hold the paper, and tear it all in the width direction. After tearing off all the tears, if the graphic imprint on the surface of the printed matter follows the glue layer and the fiber of the paper Transferred to the film, it means that the printed matter and the film adhere well, and it is a qualified product.
        2. Put the film-coated sample into the drying tunnel and bake at 60-65 degrees Celsius for about 30 minutes. If there is no blistering, no delamination and no wrinkles will occur, and it is a qualified product. After baking, the tear film should not be separated from the paper intact.
        3. Immerse the sample in cold water for 1 hour and take it out. If the plastic film is not separated from the printed product, it is a qualified product.

        4. Put the sample on the creasing machine and apply pressure. If the pressed uneven part does not delaminate, it is a qualified product.