Automatic Precision Paper Slitting Rewinding Machine With PLC Control

The kraft paper slitting and rewinding machine is a specific type of converter designed to handle the unique properties of kraft paper. While the core principles are the same as a standard paper machine, the equipment is built to be more robust and address the challenges kraft paper presents.

Key Characteristics of Kraft Paper & Machine Implications

Kraft paper is known for its:

• High Strength & Toughness: It's durable and resistant to tearing.

• Rough, Abrasive Surface: Causes faster wear on machine components.

• Stiffness: Can be harder to control and wind without wrinkles.

• Variability: Can have inconsistent caliper (thickness) and tension properties.

• Often Heavy Basis Weight: Common in packaging for 40 lb to 100 lb+ grades.

Because of these properties, a machine for kraft paper must be:

1. Heavy-Duty: Built with stronger frames, larger shafts, and more powerful drives.

2. Abrasion-Resistant: Uses hardened rollers, special coatings, and wear-resistant slitting components.

3. Powerful: Requires strong brakes on the unwind and high-torque drives on the rewind to handle the heavy rolls.

4. Equipped with Superior Tension & Spread Control: To manage stiffness and prevent wrinkles.

   
   

Common Applications for Slit Kraft Paper Rolls

The finished rolls from these machines are used in a wide array of packaging and industrial applications:

• Bag Making: Rolls slit to specific widths for flat or satchel bags (e.g., shopping bags, mailing sacks).

• Wrapping: Rolls for wrapping individual items, pallets, or as void-fill material.

• Core Winding: Slit into narrow strips for spiral winding into paper tubes and cores.

• Packing & Cushioning: Used inside boxes to protect fragile items.

• Interleaving: Placed between layers of products (like metal sheets or furniture) to prevent scratching.

• Label Stock: As a base material for heavy-duty kraft tags and labels.