High Speed Automatic Paper Slitter Rewinder Machine Price

kraft paper slitting and rewinding machine is a specific type of converting equipment engineered to handle the unique properties of kraft paper. While it follows the same basic principles as a standard machine, its design and components are robustified to manage kraft paper's strength, thickness, and sometimes abrasive nature.

Specialized Features of a Kraft Paper Slitting Rewinding Machine

1. Slitting Method: Almost Exclusively Shear Cut

• Why? Kraft paper is too thick and strong for razor blades, which would dull quickly and cause a ragged, dusty edge.

• Shear Cut Configuration: Uses a top and bottom circular blade that work like scissors.

  • The bottom blade (anvil ring) is typically serrated or carbide-coated for durability.

  • The top (male) blade overlaps the bottom blade to create a clean, precise, and dust-minimized cut.

  • This method provides a clean, strong edge that is crucial for downstream processes like automated bag making or printing.

2. Heavy-Duty Unwind Stand

• Often includes a motorized brake or back-tensioning system to control the massive inertia of a full jumbo roll of kraft paper.

• May feature cantilevered arms for easier loading of heavy rolls.

• Equipped with robust shafts and chucks capable of supporting high weights.

3. Robust Tension Control System

• A dancer roller system or load cell is standard to maintain consistent tension throughout the process. Fluctuating tension can cause loose or tight rolls, leading to telescoping or corrugated edges.

• The system must be powerful enough to handle the high tensile strength of kraft paper without stretching or deforming it.

4. Heavy-Gauge Rewind Drum & Shafts

• The center-surface rewinding method is most common. A large, solid, machined steel drum provides the surface drive for the new rolls.

• This drum must be extremely rigid to prevent deflection (bending) under the high pressure required to build a hard, dense kraft paper roll.

• Rewind shafts are high-strength steel to prevent bending.

5. Enhanced Dust Management

• Many machines will have integrated vacuum dust extraction systems near the slitting section to remove paper dust, keeping the rolls clean and protecting the machine's moving parts.

Typical Applications for Slit/Rewound Kraft Paper

The finished rolls from this machine are used to make:

• Paper Bags: Grocery sacks, shopping bags, cement bags.

• Kraft Packaging: Wrapping for heavy items, parcel protection.

• Industrial Rolls: Abrasive backing, masking paper in construction.

• Cores & Tubes: The base material for making paper tubes and cores.

• Laminates: As a base layer for multi-ply laminates with foil or plastic.