The high-performance winder W4000-4S 2T is a perfect fit for SML’s 2-metre stretch film line, EcoCompact II, which was recently completely revamped. The winder makes significantly higher production speeds possible, especially for the production of hand rolls on 2-inch cores.
 

In early 2024, SML fully revised its EcoCompact stretch film line concept. The optional winder W4000-4S 2T plays a key role in the EcoCompact II “This winder has two turrets – or in simpler terms, two winders in one frame,” Thomas Rauscher, the Product Manager at SML, explains.
 

Shorter winding shafts are the main reason for the high winding speeds of the W4000-4S 2T. “The shorter shafts are not affected by critical rotational speed or vibrations at higher production speeds. A fact that takes on significance when it comes to the production of 2-inch hand rolls,” Thomas Rauscher continues.
 

Higher speeds make hand roll production economical 
Usually, the manufacturing of 2-inch rolls is not economical on 2-m stretch film lines, since production speed is limited to 300 or a maximum of 400 m/min on a “conventional” winder with longer shafts. “Using a W4000-4S 2T winder on the EcoCompact II, enables the production speed for hand rolls on 2-inch cores to be extended to 800 m/min. This leads to a significant increase in output and boosts the efficiency of hand roll inline production up to the next level,” Thomas Rauscher states.

Just to give an example of the performance capability of the EcoCompact II in combination with the double turret winder W4000-4S 2T: with 12 microns on 2” cores, a net output of over 1,000 kg/h is possible.
 

Redlham, 16.10.2024