Lamination & flexographic printing
Depending on the intended end uses, the nonwoven may be lacking in some aspects such as strength, soundproofing capacity, aesthetic appearance or other.
To overcome this problem, it is possible to couple the nonwoven web with one or more layers of other materials, such as plastic film, to create a “new” product with a combination of the physical and mechanical characteristics of each layer, expanding thus the range of its possible uses. The process used to achieve this result is lamination.
Our customer, in this case, has chosen to equip itself with an A.Celli F-LINE® lamination system for three-ply composites. The complete turnkey line supplied, capable of processing spunbond with a width of 1600 mm and basis weights starting from 15 to 60 gsm at 400 m/min, is composed of:
In addition to lamination, a further process capable of enhancing the hygienic nonwoven from an aesthetic point of view, making it more attractive and marketable, is printing.
The process used in the case of nonwovens is flexography, a rotary printing method that involves the use of flexible plates for the transfer of quick-drying inks onto the web. Used in numerous sectors, such as food packaging, flexography gives the product the necessary aesthetic qualities that make it more palatable.
For its production needs, our customer has chosen our A.Celli IRIDIUM®, an 8-color flexographic printer integrated in the lamination line capable of printing with solvent-based or water-based inks at a maximum speed of 600 m/min.
Among the equipped options we can find:
- a web cleaning system, developed to remove dust and particles from the surface of the substrate to be printed
- a web treatment unit, positioned upstream of the printing section
- an interactive repeat lenght measurement and adjustment system, designed to maintain the consistency of the print repeat lenght within an acceptable field of tolerance when printing materials subject to physical lenght variations (such as nonwoven).
The strength of the IRIDIUM® flexographic printers is certainly the design developed specifically for the use of water-based inks at high processing speeds without sacrificing print quality.