Discover how to optimise the lamination process

19/01/24 | Uncategorized

Laminating is a delicate art that is affected by a number of variables, such as speed, pressure, temperature and the thickness of the paper used. These elements are not only intertwined, but also have a significant impact on the lamination process and the quality of the final result.

En el mundo de la laminación, el papel es el lienzo sobre el cual se plasma la magia de este proceso. However, not all papers behave in the same way under the pressure and heat of a laminating machine. Several factors, such as paper thickness and print type, influence the optimal parameters for successful lamination.

Paper Thickness and its Variations

Paper thickness is a crucial factor that determines the ideal laminator configuration. For different paper weights, specific pressure, temperature and speed settings are required to achieve efficient and high quality lamination.

– 115-150 gsm: This weight range, common in standard printing papers, requires a pressure of 3-4 bar and a temperature of 95-110°C for best results. The ideal lamination speed is between 4-15 m/min, depending on the type of print and the amount of dark toner areas.

– 175-250 gsm:These are thicker papers, which require a slightly higher pressure of 4-5 bar. The rolling temperature varies between 100-110°C. On this type of paper, the speed can be increased up to 15-20 m/min for offset printing and up to 4-15 m/min for digital printing, depending on the print quality.

– 300-600 gsm: Thicker papers require a higher pressure of 5-6 bar and a higher temperature of 105-110°C for effective lamination. The rolling speed is slower, ranging from 3-10 m/min.

Type of printing and its impact

The nature of the printing (offset or digital) also influences the lamination parameters. Digitally printed papers, especially in areas with dark toner, may require specific temperature and speed settings to avoid damage or warping.

Digital printing generally requires lower temperatures and slower lamination speeds compared to offset printing. Dark toner areas often need lower temperature but may require higher pressure for effective lamination.

Final Conclusions

Successful lamination is not simply a matter of applying pressure and heat to a paper; it is a delicate dance between speed, pressure, temperature and paper thickness. Understanding how these variables relate to each other is critical to achieving optimal lamination results, ensuring durability, aesthetics and quality of the final product.

The key lies in the adaptability and the ability to adjust the parameters of the laminating machine according to the paper specifications and the printing technique used. It is this in-depth understanding that allows lamination experts to unlock the full potential of this technique and raise the quality of finished products to new levels of excellence.

White paper

Paper thicknessPressureTemperatureMaximum mechanical speed
115-150 g/m²3-4 bar95-100ºC10-15 m/min
175-250 g/m²4-5 bar100-105ºC15-20 m/min
300-600 g/m²5-6 bar105-110ºC10-15 m/min

Offset printed paper

Paper thicknessPressureTemperatureMaximum mechanical speed
115-150 g/m²3-4 bar95-100ºC10-15 m/min
175-250 g/m²4-5 bar100-110ºC15-20 m/min
300-600 g/m²5-6 bar110-115ºC8-15 m/min

Digitally printed paper

Paper thicknessPressureTemperatureMaximum mechanical speed
115-150 g/m²3-4 bar95-110ºC4-10 m/min
175-250 g/m²4-5 bar100-110ºC4-15 m/min
300-600 g/m²5-6 bar105-110ºC3-10 m/min

Digitally printed paper (dark toner areas)

Paper thicknessPressureTemperatureMaximum mechanical speed
115-150 g/m²3-4 bar95-100ºC3-10 m/min
175-250 g/m²4-5 bar100-105ºC3-15 m/min
300-600 g/m²5-6 bar105-110ºC3-10 m/min

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