Only under the pressure, the hot-melt adhesive in the viscous state of the rotary film laminator will fully wet the paper print surface in the process of driving the air away from the print surface. Diffusion and dislocation of colloid molecules to the ink layer of paper prints and paper molecules, and achieve good adhesion, forming a complete envelope on the entire surface of the printed matter, so that the printed matter is bright, no fog, leveling of the glue layer, no creases , The bonding effect is good, in the case of no wrinkle, the pressure is appropriately increased, so that the thermoplastic curing performance of the hot melt adhesive can be fully expressed.

        The reason for the vacuum rotary laminating machine is that the surface tension value of the glazing paint is large. The wetting effect of the outer ink layer of the printed matter is not good. The surface tension value should be reduced to improve the wettability of the ink layer of the coating; the solvent in the coating is poorly volatilized, the residual solvent in the coating is high, and the volatilization rate can be changed to high The solvent may make the coating completely dry and then press it; it may also be that the speed of the coating is too fast, the drying temperature is low, the coating is not completely dried, and the solvent is not completely evaporated, you should adjust the coating Process conditions; the ink layer on the surface of the printed matter will also crystallize, which requires effective measures, such as removing the oil on the crystallized surface of the ink layer or performing a roughening treatment to improve the wetting effect of the coating on the ink layer to weaken or Eliminate the adverse effects of ink layer crystallization on glaze coating.