Stretch Film Jumbo Roll
OPALUS PACK is a stretch film jumbo roll manufacturer producing conversion-grade master rolls for slitting factories, rewinding plants, packaging film converters, and private-label film producers. This mother roll stretch film is built for downstream processing, not direct pallet wrapping. In routine production checks, thickness deviation is controlled within +/-2.5%, COF is kept at 0.15 – 0.35, and the roll is designed for stable converting at 200 – 600 m/min.
- Product type: Stretch film jumbo roll for slitting and rewinding
- Brand: OPALUS PACK
- Material: Cast LLDPE / mLLDPE multilayer film
- Thickness range: 8 – 35 um
- Standard core: 76 mm paper core
- Main use: Master roll stretch film for film converting material production
Types of Stretch Film Available for Wholesale
Product Overview
A stretch film jumbo roll has a different role from a finished hand roll or machine roll. It is the source roll that converters rely on before final roll size, label, or packaging format is made. For this reason, OPALUS PACK focuses on roll structure, gauge stability, unwind behavior, and surface consistency instead of retail-style presentation.
In daily converting work, common problems are often caused by unstable winding tension, gauge fluctuation, poor edge profile, or blocking between layers. These issues can slow down a slitter, increase edge trim waste, or create rewound rolls with uneven hardness.
Our stretch film jumbo roll is produced with controlled cast extrusion and stable winding pressure. The target thickness tolerance is kept within +/-2.5% under standard production conditions. This helps reduce blade tracking movement during slitting and supports predictable roll formation after rewinding. For converters running continuous orders, stable processing behavior is often more important than simply choosing a heavier film.
The film surface is checked for gels, crystal points, and small visual defects. These defects may look minor on a jumbo roll, but they can become break points or appearance problems after slitting into narrower rolls. By controlling melt filtration and extrusion stability, OPALUS PACK helps converters reduce avoidable scrap and improve batch repeatability.
Benefits
- Helps reduce slitting waste caused by unstable thickness distribution
- Supports smoother unwind at 200 – 600 m/min converting speed
- Maintains COF balance between 0.15 – 0.35 for controlled layer movement
- Reduces rewinding vibration caused by uneven web tension
- Improves roll hardness consistency after downstream rewinding
- Helps prevent telescoping caused by poor winding pressure control
- Provides cleaner film surface with low gel and crystal point control
- Supports batch-to-batch consistency for long production schedules
Why does thickness uniformity matter more for converters?
For a converter, thickness uniformity affects production efficiency before the film reaches a final user. If one side of the stretch film jumbo roll is slightly heavier than the other, web tension becomes uneven across the width. During slitting, this can cause edge waviness, blade tracking instability, or unnecessary trim loss. In rewinding, the same variation may create vibration and uneven roll hardness. OPALUS PACK treats gauge control as a production stability issue, not just a specification number.
TDS
| Item | Typical Value |
|---|---|
| Product Name | Stretch Film Jumbo Roll |
| Brand | OPALUS PACK |
| Film Type | Cast stretch film master roll |
| Material | LLDPE / mLLDPE blend |
| Thickness | 8 – 35 um |
| Width | 300 – 500 mm |
| Roll Net Weight | 26 – 55 kg |
| Core Inner Diameter | 76 mm |
| Roll Diameter | 220 – 500 mm, depending on roll weight and thickness |
| Thickness Tolerance | +/-2.5% under standard production conditions |
| Tensile Strength | MD >= 25 MPa / TD >= 20 MPa |
| Elongation | 200% – 350% |
| COF | 0.15 – 0.35 |
| Cling Level | Controlled single-side or balanced cling |
| Haze | <= 2.5% for transparent grade |
| Gel / Crystal Point Control | Low defect extrusion grade |
| Winding Tension | Stable winding for slitting and rewinding |
| Recommended Converting Speed | 200 – 600 m/min, depending on equipment setting |
| TDS Availability | Available for production batch reference |
Applications
- Slitting factories producing smaller stretch film rolls
- Rewinding plants converting jumbo rolls into machine rolls
- Packaging film converters serving industrial accounts
- Private-label stretch film production
- Film converting material supply for OEM roll formats
- High-speed converting lines requiring stable master roll input
What should converters check before selecting a jumbo roll?
Converters should look beyond thickness and roll weight. A reliable mother roll stretch film should have stable COF, clean edges, controlled cling, low gel points, and uniform winding density from core to outer diameter. If COF is too high, layers may block during unwind. If it is too low, the web may slip during slitting. A well-made industrial film roll should unwind smoothly, hold tension predictably, and reduce frequent machine adjustment during long runs.
FAQ
What is a stretch film jumbo roll used for?
It is used as a master roll for slitting and rewinding into smaller stretch film rolls, including machine rolls and private-label formats.
Is this product made for direct pallet wrapping?
No. It is designed for film converting material production, not direct pallet wrapping or retail-style packaging.
What thickness range can OPALUS PACK produce?
The common production range is 8 – 35 um, depending on final roll type and converting line requirement.
Can a TDS be provided for production reference?
Yes. OPALUS PACK can provide TDS information covering thickness, width, COF, tensile strength, elongation, core size, and roll weight.