Multi-wind winder for stretch film

At the K show, Dolci Extrusion (hall 16, stand A05/A17) displays the new stretch film winder for the production of either hand rolls on 2-inch cores, or machine rolls and jumbo rolls (up to 420 mm diameter) on 3-inch cores. The stretch film market is becoming increasingly demanding for the production of very low gauge films having very good mechanical properties and good optical appeal. For this reason the winders must run smoothly at higher speeds in order to reach a reasonable output of the cast line.
As a matter of fact the new Dolci winder has been designed to achieve a speed of 800 m/minute. In the design phase, the company has considered the customer's need to follow the "changing" market trends, and the outcome is a versatile machine that can produce the 50 kg jumbo rolls, or the machine rolls (15/20 kg), or even the hand and cling rolls winded on "thin cores" for film length of less than 200 meters.
At the show, this new winder works in-line with a 5-layer 2-meter cast line, having an output of up to 1,350 kg/h, and is the evolution of the well tested Rotowind winder, that was designed for hand and machine rolls. The new Multiwind is designed for a contact/axial winding system with 4 spindles and a roll change cycle of 17 seconds. Particularly interesting and totally innovative is the cores loading system and the cores storage of 100 cores (2 inches) or 75 cores (3 inches). This system can be easily expanded upon customer request. This winder has been specially designed for thin film production - 8/10 micron - at high speed. For this reason, it features some cylinders driven by vector motors.
At the K Dolci will also show its most updated blown film line for quality films, designed for an output of 750 kg/hour.