How to control the speed of the pre coated thermal laminating process?

Plastic Thermal laminating laminating work area is very narrow, only 5 ~ 20mm.

The normal working time is about 0.1 ~ 0.2s.

Composite bopp or pet thermal laminating film and paper prints, is in the work area so narrow, so a very short time to complete work.

Work time, the running speed, decided to work temperature conduction process and layer gradually transformed sequential process, pros and cons of processing a printing surface wetting degree, and hot melt adhesive particles dispersed state, the bonding strength.

Relatively speaking, working for a long time, when melt fully, for processing a printing surface wetting fully, to the ink layer, and paper formation diffusion diffusion and bonding fastness.

Conversely, working time is short, do set future temperature to press conduction distance and sequential implementation hotmelts gradually transformation, also not likely to form the hot melt adhesive molecules and ink layer, between the paper fiber molecular diffusion infiltration, affinity, resulting in poor wettability, bond is weak.

Seemingly bonding, the actual work is only below the required temperature, the role of viscosity material viscosity;

After cooling, heating the viscosity, liquidity returned to original low temperature brittleness, the film after processing the impact of external forces and heating, creases or foaming, this kind of problem.

lamination film

Based on isothermal, the same pressure and the compound effect of detection under the condition of different speed change predeposited film and a variety of paper printing products, pre coated laminating speed specification are as follows:

The scope of the work speed is generally 6 ~ 12m/min;

II the paper quantitative high and tight degree, containing large amount of water, dust, ink layer of a large area, deep colors, low ambient temperature, humidity, gas flow fast, complex brightness and poor conditions should be appropriate to reduce the speed, composite effect is good;

In the set of 6 ~ 12m/min working area, such as the incremental adjustment of the production rate of 1m/min, the average operating temperature decreased by 3.4%, the working pressure decreased by 9.4%;

4 in the working area of the 12m/min< running speed is less than or equal to 15m / min, such as to 1m / min increments to adjust the production speed, each output variable value change will change dramatically.