Yield is an operating measurement, not a universal material constant.
Operational meaning
A yield factor links geometric empty space to an operational material quantity. It depends on material, paper weight or pillow size, equipment setting, crumpling method, compression, product geometry, and operator technique. A supplier figure can begin a trial but should not be treated as guaranteed production consumption.
Definitions and operating notes
- Void volume
- Internal container volume minus simplified packed-product volume; geometry can make usable void different.
- Fill factor
- A user-set multiplier applied to estimated void to reflect compression, gaps, and method.
- Paper sheet yield
- A measured filled volume per sheet under a documented crumpling and placement method.
- Dispensed volume
- Supplier-rated or operator-measured output from a machine setting; verify after material changes.
- Recovery
- How well a fill maintains volume after compression and handling.
- Waste allowance
- Additional quantity for setup, trimming, damage, misfeeds, and normal process loss.
- Calibration batch
- A representative set of packs used to compare predicted quantity with actual use.
- Review trigger
- Recalibrate after material, carton, equipment, product, or operator-method changes.
Applied example
An 880 in³ geometric void may not consume exactly 880 in³ of dispensed material. Paper packed firmly into narrow pockets can require a factor above 1.0, while structural inserts may remove part of the accessible void. A calibration batch records predicted void, actual sheets or dispense length, movement result, and revised factor.
Key distinctions
| Term or question | Operational distinction |
|---|---|
| Geometric void | Simplified box volume minus simplified product volume. |
| Fill factor | User-set multiplier that adjusts geometric void for the operating method. |
| Sheet yield | Measured filled volume attributed to one paper sheet. |
| Waste allowance | Extra quantity for setup, damage, remnants, and normal loss; it is separate from filled-volume yield. |
How to use this reference
- Define the material’s protection function.
- Pack a representative calibration batch.
- Measure actual issue quantity and outcome.
- Update calculator input and inventory rate after changes.
Record structure and maintenance
A working Void Fill Yield Factors record should identify the source document or measurement, unit and scope, effective date, reviewer role, and the calculator or pack instruction that consumes the value. Start by define the material’s protection function, then preserve the unrounded or source value before any operational rounding or simplification.
Do not treat the glossary entry “Void volume” as self-approving data. Link the Void Fill Yield Factors entry to the applicable drawing, supplier specification, official method, measured sample, or controlled procedure. When yield is not cushioning performance becomes relevant, mark the old record superseded, update linked calculations, and recheck downstream fit, cost, inventory, or handling decisions.
The Void Fill Yield Factors applied example shows the minimum audit trail: original inputs, intermediate relationship, displayed result, and the action it supports. A periodic Void Fill Yield Factors review should also verify that the distinction between “Geometric void” and its paired operating meaning remains clear to people entering data.
Verification cautions
- Yield is not cushioning performance.
- Irregular inaccessible pockets distort geometry.
- Compression and recovery matter over time.
- Material or equipment changes require recalibration.