Slitting & Rewinding
Optimising Slitter Rewinders for Higher Throughput
Practical tips to reduce waste and increase uptime on slitter rewinders.
Where the time actually goes
A slitter rewinder can run fast and still deliver poor throughput if it spends too long stopped. Roll changes, knife setting, core loading and unloading often add up to more time than the slitting itself. Measuring stopped time by cause is the first step to improving it.
- Roll loading and unloading
- Knife positioning and changeover
- Web threading after a break
- Waiting for inspection or approval
Choosing the slitting method
Razor slitting — strengths
- Simple and quick to set up
- Well suited to thin films
- Low tooling cost
Razor slitting — watch-outs
- Blades wear and need regular replacement
- Less suitable for thick or laminated webs
- Edge quality depends on blade condition
Roll quality: winding and lay-on
Differential winding lets each roll on a shaft wind at its own tension, compensating for small thickness differences across the web. Combined with correct lay-on (pressure) roll settings, it produces firm, even rolls without telescoping or gauge bands.
Five ways to faster changeovers
- 1
Pre-stage cores and knives
Prepare the next job while the current one is running.
- 2
Use laser positioning
A laser light system speeds up knife and core alignment.
- 3
Lift and push rolls mechanically
Reel lifters and pushers cut unloading time and reduce handling damage.
- 4
Standardise settings
Store tension and lay-on settings per product.
- 5
Track every stop
Log stopped time by cause and review it weekly.
Frequently asked questions
What is differential winding?
A winding method where each roll on a shaft can slip independently, so every roll winds at the correct tension even if the web thickness varies across its width.
What causes telescoping rolls?
Usually incorrect tension or lay-on pressure, or poor core alignment. Check winding tension first.
Slitter rewinders
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leopard-500
Slitter Rewinder Machine - leopard-500
leopard-500 - Next generation high productive cantilever slitter re-winder. Features differential winding with arm locking system, hydraulic floor lifting, double layon facility, pull roll technology.
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MC Slit - 350
Slitter Rewinder Machine - MC Slit 350
MC Slit 350 - Next generation high productive cantilever slitter re-winder. Differential winding with arm locking system, closed loop tension controller with shaftless unwinder, pull roll technology.
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Drum Type Slitter Rewinder Machine
The Drum Type Slitter Rewinder Machine is designed for precision slitting and rewinding of flexible packaging materials. Its drum-type winding mechanism provides stable roll formation, high-speed operation, and excellent winding quality across different materials.
