Film per accepted pack
Record material code, gauge, width, reel length, packs per reel, trim or overlap, setup waste, changeover waste and rejected packs. Divide the total film used by accepted output under a representative production period.
Ownership cost guide
Shrink wrapping machine running costs
A practical, evidence-based way to compare film, energy, labour, quality loss, maintenance and line availability without invented prices.
Operating-cost framework
Build the cost model from the accepted production method
Running cost depends on the exact machine, production film, pack pattern, line duty, operator method and quality result. This guide explains the inputs to measure without publishing unsupported prices or universal consumption figures.
Energy over the real duty
Use the final machine’s installed loads and measured operating profile: warm-up, production, gaps, standby and shutdown. Tunnel energy is affected by product thermal load, airflow, heat loss and how long the machine remains ready without production.
Direct and indirect labour
Include loading, collation, reel handling, inspection, changeover, cleaning, record keeping, planned maintenance and response to minor stops. Automation changes the task but does not remove all labour.
Quality loss and availability
Measure startup scrap, defects, rework, restart waste, micro-stops and unplanned downtime. A route using slightly more material can still cost less if it produces more accepted packs with fewer interruptions.
| Cost stream | Inputs | Useful measure |
|---|---|---|
| Film | Reel price, usable length/weight, packs per reel, setup/change waste and reject rate | Film cost per accepted pack and reels per shift |
| Energy | Installed loads, measured duty factor, warm-up/standby time, operating hours and site tariff | Energy cost per production period and per accepted pack |
| Labour | People, task time, loading, inspection, changeover, cleaning and fault response | Labour hours per shift or accepted production quantity |
| Maintenance | Manual-based tasks, consumables, parts, support, planned downtime and service labour | Planned maintenance cost and downtime exposure |
| Quality | Rejected film/product, rework, startup waste, restart waste and downstream failures | Cost of non-accepted output |
| Availability | Planned production time, changeover, micro-stops, faults and upstream/downstream losses | Accepted output versus scheduled time |
| Capital scope | Machine, conveyors, controls, guarding, change parts, installation, commissioning and training | Comparable project scope and ownership boundary |
Cost evidence
Use production trials to validate the assumptions
A cost spreadsheet is only as reliable as the process assumptions behind it. Link each input to a quotation, supplier film data, measured site value or representative trial record.
Measure at stable production
Do not base film, energy or output on the first setup packs. Establish the approved recipe, then measure normal running, expected gaps and a representative product mix.
Separate machine loss from line loss
Record whether stops originate upstream, within the shrink stage or downstream. A faster wrapper may not improve accepted line output when another process controls the rate.
Include changeover frequency
Film and format changes consume labour and material and may require warm-up or first-off approval. Use the real product schedule rather than averaging all SKUs into one ideal run.
Review product-quality consequence
A rejected shrink pack may also waste the product, label, tray or customer order. Include the actual consequence and any downstream disruption, not just the value of the film.
Evidence for a cost comparison
- Common product/film matrix and accepted pack standard for every proposed route.
- Final quoted machine scope and installed-load information.
- Representative shift or batch profile, including warm-up and gaps.
- Measured packs per reel and setup/changeover waste.
- Accepted output and reject reason over a stable run.
- Operator tasks and time, including inspection and replenishment.
- Maintenance plan, consumables and critical-spares assumptions from the exact machine documentation.
- Upstream/downstream constraints and cost of unplanned line stops.
Shrink-wrapper running-cost questions
What is the cheapest shrink wrapping machine to run?
That cannot be answered from machine type alone. Compare film per accepted pack, energy over the real duty, labour, rejects, maintenance, changeover and line availability using the same products and acceptance standard.
Can energy cost be estimated from heater power only?
No. Installed power is an input, but actual cost also depends on warm-up, duty factor, product thermal load, airflow, production gaps, standby and the site tariff.
Why include rejected products rather than only film waste?
A failed pack may also waste the product, tray, label, labour and downstream capacity. The cost model should reflect the full consequence of non-accepted output.
Does full automation always reduce cost?
Not automatically. It can reduce repetitive handling for stable production, but may add integration, changeover and maintenance requirements. Compare the complete duty and accepted output.
Application review
Build the cost comparison around one representative production profile
Send the product mix, film data, shift pattern, required accepted output, operator method, line layout and quotation scope so Lancing can define a machinery proposal suitable for a meaningful life-cycle comparison.