The WEKO motto "Don't play - work with precision!" underscores the fact that the WEKO-Fluid-Application-System is no gadget but a high-precision system applying finishing chemicals exactly metered and clean onto the plastic film web. WEKO - on the market for more than 60 years - has specialised in precise and non-contact applications of minimal liquid or powder quantities on plastic film and other material webs.
Many flexible films are finished with special surface-active substances to opti-mise the physical properties. Many of the world's renowned plastic film manufacturers already rely on the WEKO coating technology and achieve significant cost and quality advantages compared to the use of batch additives.
The extruded film webs are finished with a very thin liquid functional coat immediately following the extrusion process. Contrary to batch additives external coating neither affects the behaviour of the melt in the extruder nor the flow characteristics at the extrusion nozzle and not even the barrier effect, and thus the thickness of the different film coats.
The function is effective immediately after application and retains its effectiveness continuously even after very long storage periods. Another advantage is that the film retains its transparency, entirely without opaqueness.