Drum Type Slitting Rewinding Machine

To understand the above techniques, it is necessary to understand the terms "Duplex" Surface Rewinding". The term Duplex Rewinding implies the use of two shafts for Rewinding the slit substrate. This ensures a positive separation between adjacent slit reels, which are wound alternately on the two shafts.

In Surface Rewinding, the web is driven by the winding drum which is always in contact with the outer layer of the material being rewound. Here, it is the winding drum which is driven, also by a motor in most cases.

As is clear by the above definitions, in the case of Center-Surface Rewinding, the winding force is derived from both the Rewind shaft and the contact with the winding drum. Here, both the Rewind shaft and the winding drum are driven by through a clutch mechanism and motor respectively.

The machines using Center-Surface Rewinding technology are simple in construction with a minimal role of electronics and have offered invaluable service to the Flexible Packaging and Converting industry in its nascent stages.

Center-Surface Rewinding technology was commonly used because of its ability to produce large diameter slit reels tight enough to handle the rigors of transportation to the customer. Since the winding drum is not required to transmit increasing torque with the build up in reel diameter, tightness was achieved without the need for complicated drives and controls.

Technical Specification

Material To Slitt	STRETCH FILM/CLING FILM/ FABRIC/ POLYESTER/BOPP/MATELISER/FOIL/PAPER
Web Width	600mm To 3500mm
Unwind Dia	Up to 1200mm
Rewind Dia	350MM/600MM/1000MM
Rewinding Type	Duplex Centre Cum Surface
Unwind/Rewind Core	3” and 6”
Min Slitting Width	10mm
Machine Speed	0-250 mpm
Parent Roll Weight	600kg To 1500kg
Guiding System	Pneumo Hydraulic / Ultrasonic / Line Guiding
Load Cell with Auto Tension Control	Optional
Pneumatic Brake (2caliper/4caliper/6caliper)	Optional
Four Drive Synchronization	Optional
Shaftless	Optional