Value Stream Mapping for Label Printing and Converting: From Artwork Approval to Shipped Label Roll Without the Make-Ready Drag

In label printing, the press can produce a roll in minutes while the order takes days to reach despatch. The difference is rarely explained by printing speed alone. It is created by artwork approvals, plate and die availability, scheduling queues, material retrieval, make-ready, inspection and handoffs.

Value Stream Mapping (VSM) makes this hidden lead time visible. It separates the short period in which the label is physically transformed from the much longer period in which the order waits, moves, is checked, or is approved. For a flexographic or digital label printer, that distinction provides the evidence needed to reduce make-ready drag without compromising colour, registration, barcode quality or customer requirements.

This guide presents an illustrative current-state and future-state map for a pressure-sensitive label product family. The numbers are worked examples; each plant should replace them with timestamped production data.

1. Scope Selection: Define the Label Family and Takt Time

The product family is:

• Pressure-sensitive roll labels for a fast-moving consumer goods brand
• Printed flexographically on a mid-web press
• Four spot colours plus process black
• Die-cut, matrix-stripped, slit and rewound into finished rolls
• Typical order quantity: 10,000 good linear metres

The map begins when approved artwork enters the production workflow and ends when finished label rolls are packed and despatched. It includes:

1. Artwork and pre-press proofing
2. Plate and die ordering
3. Job scheduling
4. Substrate and stock-label retrieval
5. Press make-ready and colour matching
6. Print and die-cut
7. Slitting and rewinding
8. Inspection
9. Packing and despatch

The customer requires 240,000 good linear metres per week. The press has 30 available production hours, or 1,800 minutes, after planned breaks and scheduled maintenance.

[
\text{Takt time} = \frac{1,800\text{ minutes}}{240,000\text{ metres}} = 0.0075\text{ minutes per metre}
]

That equals 7.5 seconds per good metre, or a required pace of approximately 133.3 good metres per minute.

Takt is not the same as press speed. It is the rhythm required to satisfy demand. This distinction is central to VSM and connects the map to the process cycle efficiency calculator, capacity planning and the Theory of Constraints.

2. Current-State Map: Where the Order Actually Spends Its Time

The following data represents an average order across 20 sampled jobs. The order contains 10,000 good linear metres.

Worked press-performance numbers

For the 10,000-metre order:

• Nominal press speed: 150 metres per minute
• Press uptime: 78%
• Start-up spoilage: 180 metres
• Running spoilage: 220 metres
• Total spoilage: 400 metres, approximately 4.0%
• Reprint rate: 6% of orders
• WIP: 18 active jobs, including seven awaiting artwork approval
• Average jobs completed per shift: 4

The pure press transformation time is approximately:

[
\frac{10,000\text{ good metres}}{150\text{ metres per minute}} = 66.7\text{ minutes}
]

Using press value-added time only:

[
\text{Flow efficiency} = \frac{66.7}{6,377} \times 100 = \mathbf{1.05%}
]

Rounded, only 1.0% of the order’s elapsed lead time is press transformation. If all direct processing time is included, the broader process efficiency is 377 ÷ 6,377 = 5.9%. Both figures show why improving only run speed will not solve the delivery problem.

The current effective output is also below takt:

[
150 \times 0.78 \times (1 – 0.04) = 112.3\text{ good metres per minute}
]

That is below the required 133.3 good metres per minute.

3. The Eight DOWNTIME Wastes in Label Production

Defects

• Incorrect artwork revision reaches pre-press, causing a plate remake and another approval loop.
• Poor registration, colour variation or die-cut position creates rework or a full reprint.

The current 6% reprint rate is a direct cost of poor quality, material consumption and lost capacity.

Overproduction

• Printing extra labels “just in case” creates obsolete stock when a brand changes its pack design.
• Producing a large flexographic batch before confirming demand increases finished-roll inventory.

Digital printing can be evaluated for short runs where avoiding plates and excess stock outweighs the higher variable cost per metre. A published HP job-basket analysis illustrates why the correct route depends on run length, setup and job mix rather than press speed alone.

Waiting

• Artwork waits for brand, regulatory or customer approval.
• Operators wait for plates, dies, substrate, ink or quality release.

The largest current waiting loss is artwork approval: 1,800 minutes per order, often involving two revision loops.

Non-utilised talent

• Experienced press operators spend time searching for tools and checking basic job information.
• Pre-press specialists identify recurring artwork errors but are not involved in upstream customer-file standards.

Transportation

• Plates and dies travel between storage, pre-press and the pressroom.
• Finished rolls move to a separate inspection area and then back toward packing.

Inventory

• WIP includes 18 open jobs, seven of which are not production-ready.
• Excess substrate, ink and finished rolls occupy space and conceal the real priority sequence.

Motion

• Operators walk to retrieve plates, colour references, tooling and inspection equipment.
• Slitter operators repeatedly reposition rolls because the job specification is not staged with the parent roll.

Excess processing

• Multiple proof formats and duplicate data entry increase administrative work.
• Inspection repeats measurements that could be prevented through a controlled first-article checklist.

The three largest quantified opportunities

1. Plate and die change time: Current make-ready is 120 minutes per job. With five relevant changeovers per week, that represents 600 minutes. Reducing it to 60 minutes would recover 300 minutes per week.
2. Substrate start-up spoilage: Current start-up loss is 180 metres per job. Reducing it to 80 metres saves 100 metres per order, or approximately 2,400 metres per week at 24 weekly orders.
3. Artwork approval waiting: Current approval waiting is 1,800 minutes per order. A controlled preflight and approval SLA targeting 480 minutes would remove 1,320 minutes of elapsed time per order.

4. Future-State Build: Design Flow Around the Constraint

The future state should combine Lean flow principles with DMAIC measurement and disciplined quality controls.

1. Apply SMED to make-ready. Reduce press make-ready from 120 to 60 minutes by separating internal and external work, pre-staging plates, dies, inks and substrate, using parallel operator tasks, and standardising register and impression presets. A Flexographic Technical Association article on VSM provides useful context on mapping communication, artwork, plates, press and logistics together.
2. Standardise colour targets and ink recipes. Use approved colour references, documented ink quantities and repeatable first-article criteria. Target first-good approval within 40 start-up metres, down from 180 metres.
3. Route short runs to digital printing. Establish a decision rule for jobs under 5,000 metres, frequent artwork changes or multiple versions. Compare cost per good label, not nominal run speed.
4. Gang compatible jobs. Group jobs by substrate, ink set, die family and colour sequence. Reduce weekly press changeovers from five to three.
5. Install a pre-press preflight gate. Require barcode verification, dimensions, bleed, colour references, text, regulatory content and revision status before scheduling. Target 95% first-pass artwork acceptance.
6. Use a Kanban system for plates and dies. Maintain two ready-to-use kits for high-frequency SKUs, with defined reorder points and ownership. Target 98% availability at planned start time.
7. Lock the daily press schedule. Freeze the next 24 hours except for a defined escalation process. Target 90% schedule adherence and fewer disruptive expedites.

5. Current State Versus Future State

The future-state calculation is:

[
165 \times 0.88 \times (1 – 0.015) = 143.2\text{ good metres per minute}
]

This exceeds the 133.3 metres-per-minute takt requirement and creates a practical capacity buffer.

6. A 90-Day Kaizen Sequence

Days 1–30: Measure and stabilise

Owner: Operations Manager, supported by the Green Belt

Actions:

• Time-stamp artwork submitted, approved, plate-ready, press-start, first-good, finished and despatched.
• Record every changeover element using a Time Observation Sheet.
• Create a Pareto of spoilage, reprints and approval-loop causes.
• Establish a baseline for uptime, run speed, WIP and on-time delivery.

Metrics and expected results:

• 100% timestamp compliance on sampled jobs
• Approval-loop reasons coded for at least 20 jobs
• Baseline confirmed for all future-state measures
• Immediate 10% reduction in approval waiting through visible ownership

Days 31–60: Pilot the improved flow

Owner: Pressroom Supervisor, supported by the Black Belt

Actions:

• Run three SMED trials on the highest-frequency flexographic changeover.
• Pre-stage plates, dies, inks, substrate and inspection tools.
• Introduce the artwork preflight gate and a 24-hour locked schedule.
• Trial digital routing for short runs and gang compatible flexographic jobs.

Metrics and expected results:

• Make-ready reduced from 120 to 80 minutes or less
• Start-up spoilage reduced from 180 to 110 metres or less
• Schedule adherence reaches 85%
• Reprint rate reduced to 3.5% or less

Days 61–90: Control and scale

Owner: Quality Manager and Master Black Belt governance sponsor

Actions:

• Standardise colour recipes, first-article approval and changeover checklists.
• Launch plate-and-die Kanban with min–max levels.
• Add daily visual management for takt, WIP, spoilage, reprints and dispatch performance.
• Audit the process weekly and update the control plan.

Metrics and expected results:

• Make-ready reaches 60 minutes
• Total spoilage reaches 1.5%
• On-time delivery reaches 95%
• Reprint rate reaches 2%
• Six jobs per shift becomes the demonstrated standard for the selected family

A disciplined VSM project should not stop when the future-state map is drawn. The control phase must verify that improvements hold across shifts, operators, substrates and product variants. For a broader methodology reference, review the Lean Six Sigma concepts and glossary.

Build the Capability to Lead the Improvement

Value Stream Mapping is most powerful when it is connected to project selection, data analysis, root-cause investigation, SMED, statistical process control and control planning. A CSSC-accredited Green Belt can lead focused improvement projects and turn production data into measurable gains. A CSSC-accredited Black Belt can lead complex cross-functional change, mentor Green Belts and align the value stream with wider operational strategy.

Build the skills to improve flow, reduce waste and lead measurable transformation: explore the Lean Six Sigma training programmes at Lean 6 Sigma Hub, including CSSC-accredited Black Belt training.

Kaizen. Kai-Care. Kai-Done. Lean Six Sigma