Extrusion coating technology process of coating machine for nonwoven

- Mar 29, 2019-

The coating machine for nonwoven is suitable for online hydrophilic finishing of non-woven fabrics, with reasonable equipment mechanism, advanced performance, beautiful appearance, firm and safe. Provide efficient and convenient production methods. Specifically, the molten mesh of synthetic resin is applied to the base material, which is a multifunctional coating technology for various plastics, especially polyethylene, cardboard, corrugated fiberboard, paper, aluminum foil, cellulose, non-woven Economical application of cloth or plastic film.


The actual process of extrusion coating of a coating machine for nonwoven involves direct extrusion of the resin from the slot die onto a moving web at temperatures up to 320 ° C, which can then be covered by rubber by a coater. A nip consisting of a pressure roller and a chrome-plated cooling roller. The latter cools the molten film back to the solid state and imparts the desired finish to the plastic surface. The web is typically much faster than the resin is extruded from the mold, resulting in a coating thickness to speed ratio that is proportional to the slit gap.


Extrusion lamination of a coating machine for nonwoven is a similar process except that the extruded hot melt resin acts as a binding medium for the second web of material. Coextrusion is also a similar process, but two or more extruders are attached to a single die where the separately extruded melts are put together and finally extruded into a multilayer film.