TechnoPlants - Technologies for nonwoven

Coating lines

Slot Die Coating consists in applying a coating material to a flexible substrate.
The coating material is forced out from an extruder through a slot by pressure, and transferred to the moving web. If the web is moving slowly, the coating is thick; if the web is moving quickly, the coating is thin. The slot supplies the exact amount of coating material to give the required coat weight and then transfers all of it to the web. Coat weight is not affected by viscosity.
Technoplants slot die coating system consists of:

  • An extruder which melts the polymer.
  • A pump to feed the solution to the die.
  • The die plates, which contain a distribution manifold to distribute the flow across the web.
  • The exit lips of the die.
  • A support station to rigidly hold the die and to adjust bead gap and die angles.

Hygiene coating
DIY market
Waterproof felts

Advantages of extrusion coating

Advantages of extrusion coating

    • High quality of the coated product.
    • High uniformity of coating thickness.
    • Absence of point or line defects.
    • Uniform surface finish.
    • Increased efficiency and productivity.
    • Cost reduction.
    • No contaminations or aging effects due to coating solution recirculation.
Technical characteristics

Technical characteristics

    Processable polymers:

    • Low density polyethylene (LDPE)
    • Polypropylene (PP)
    • Polyamide (PA - also known as nylon)
    • Working width: from 1000 to 6000 mm
    • Production speed: up to 40 m/min
    • Thickness of polymer film: from 20 to 500 ?m (with the same slot die coater)
    • Type of production: in-line or off-line.
Lamination through

Lamination through

    • Electric resistances
    • Flame burners
    • Hot melt
    • Hot cylinder
    • Extrusion coating
    • Ultrasonic welding
    • Powder and infrared heating

Fields of activity