Carton L × W × H to BOPP Film Roll Width & Cutoff Reference Chart
Calculate flat BOPP/cellophane roll width, sheet cutoff length, and cartons per kilogram of 22–30 micron film from your rigid box L × W × H dimensions.
Exact Sheet Geometry for 3D Envelope Box Overwrapping
Ordering slit BOPP rolls 10 mm too wide creates bulky, overlapping end flaps that fail to iron flat; ordering rolls 6 mm too narrow leaves corner pinholes open to dust. Grounded in overwrapper selection and sizing and BOPP and cellophane film specs, apply these two formulas to any cuboid carton (Length L = longest axis parallel to film roll width, Width W, Height/Thickness H):
1. Slit Film Roll Width (mm) = L + H + (0.5 × H) to L + (2 × H) − 6 mm (so folded end flaps overlap ~65–80% of box height without overhanging edges). 2. Sheet Cutoff Length (mm) = 2 × (W + H) + 15 mm longitudinal lap seal.
Sample Carton Sizes to BOPP Film Spec & Yield Table
Calculated for standard 25 μm BOPP (density 0.91 g/cm³ -> 22.75 g/m²):
| Example Rigid Carton (L × W × H) | Slit Roll Width | Sheet Cutoff Length | Film Area / Box | Boxes per 1 kg of 25 μm BOPP |
|---|---|---|---|---|
| Perfume Carton (120 × 60 × 45 mm) | 190 mm web | 225 mm cut | 0.0428 m² | ~1,025 boxes / kg |
| Skincare Cream Box (85 × 85 × 70 mm) | 205 mm web | 325 mm cut | 0.0666 m² | ~660 boxes / kg |
| Pharma Blister Carton (110 × 55 × 25 mm) | 150 mm web | 175 mm cut | 0.0263 m² | ~1,670 boxes / kg |
| Specialty Tea Box (160 × 80 × 70 mm) | 280 mm web | 315 mm cut | 0.0882 m² | ~498 boxes / kg |
| Gift Confectionery Tray (240 × 160 × 40 mm) | 305 mm web | 415 mm cut | 0.1266 m² | ~347 boxes / kg |
Check compatible machine frames in cellophane wrapping machines.
3D Overwrapping Engineering Notes
- Verify Core Inner Diameter: Standard automatic overwrappers accept 76 mm (3-inch) paper/plastic cores with max reel OD of 320–380 mm.
- Tear-Tape Consumption: Tear tape equals exactly 1 × Sheet Cutoff Length per carton—so 1,000 perfume cartons consume 225 meters of 2 mm tear strip.
- Minimal 5 mm Trim Efficiency: Notice zero trim-edge waste is slit off on the machine—100% of the unwound sheet wraps the carton.
Confirm Your Slit Roll Spec Before Ordering Film
Send your box CAD dielines via our Project Brief to receive exact slit-roll width confirmation.
Explore related systems in Cellophane Wrapping Machines, BOPP & Cellophane Film Specs, or submit your carton L×W×H via Project Brief.
Related Specifications
Further Reference
Verify Dimensions & Operating Ratings
Send your target envelope, load requirements, and ambient environment to review matching configurations.