The method of solving paper and plastic film separation

Analysis of the reasons that affect the separation of paper and plastic film

[ Thermal Film Lamination Machine] 

The reason for the influence of paper-plastic detachment, the smoothness, uniformity, water content of the paper, the performance of the plastic film, the thickness of the printed ink layer, the amount of auxiliary materials, the temperature and pressure during the paper-plastic composite, and the hygienic condition of the production environment And temperature, relative humidity, etc. will have a certain impact on the final result of paper-plastic composite!

[ Lamination Machine Manufacturer ]

The method of solving paper and plastic film separation:

1

The ink layer of the ink is too thick, causing penetration and diffusion of the adhesive, causing the paper to detach. The treatment is to increase the amount of adhesive applied and to increase the pressure.

2

When the ink layer is not dried or is not dried, the component of the residual solvent in the ink layer weakens the adhesive force to form a paper-like detachment. The treatment method is to re-compound after the product ink is dried.

3

The residual powder on the surface of the printed matter also hinders the adhesion of the paper to the plastic film to form a paper-plastic release. The treatment method is to mechanically and manually erase the powder on the surface of the printed matter and then recombine.

4

The operation process is not standardized, the pressure is too small, and the machine speed is fast, which causes the paper to detach. The treatment method is strictly in accordance with the process specification, and the pressure of the film is appropriately increased to reduce the machine speed.[ double side lamination machine]

5

The adhesive is absorbed by the paper and the printing ink, and the paper is detached due to insufficient coating amount. The adhesive should be re-formulated and the amount of glue applied should be determined according to the manufacturer's requirements.

6

The corona treatment of the surface of the plastic film is insufficient or exceeds the service period, so that the paper is separated from the failure of the treated surface. The plastic substrate should be corona or renewed in accordance with the corona standard of the film coating.

7

When a one-component adhesive is used, the paper-plastic detachment due to insufficient air humidity should be artificially humidified according to the humidity requirements of the one-component adhesive processing process.

8

Ensure that the adhesive is kept and used according to the manufacturer's requirements during the warranty period. If the automatic mixer is in good condition, the ratio is accurate, uniform and sufficient.

Film Laminating Process

Film coating refers to the transparent plastic film applied to the surface of the printed matter by hot pressing. After the film is covered, the film is smoother and brighter. The color of the graphic is more vivid. At the same time, it is also waterproof and antifouling. It can be divided into surface processing and forming. Hot stamping, glazing and other processing techniques; molding process. The film not only makes the surface of the printed matter wear-resistant, folding-resistant and chemically resistant. However, traditional plastic films are not degradable, difficult to recycle, and easily cause pollution. 

Therefore, in the major printing cities, environmentally friendly PET films are used to improve the laminating process. The film laminating machine manufacturers have also developed various excellent equipment for PET slitting (such as chain knife slitting) to complete the elegant upgrade in laminating process.