A practical white paper for procurement managers, packaging engineers and plant leaders
Author: Phyllis Zhao
Reviewed by: Poemy Engineering Team

Executive Summary

The correct way to accept an instant Noodle Packaging line is to define, before purchase, what will be tested, which products and materials will be used, how long the line must run, what qualifies as accepted output, how downtime will be classified, and what happens when the agreed criteria are not achieved.

A Factory Acceptance Test should not be reduced to a short demonstration at maximum mechanical speed. It must prove that the complete packaging system can produce saleable products at a stable accepted rate while controlling seasoning sachet feeding, primary flow wrapping, automatic film splicing, accumulation, 5-in-1 or 10-in-1 multipacking, Case Packing and sealing, coding, inspection, rejection and controlled recovery from normal production interruptions.

OEE should not be treated as a vague marketing percentage. The buyer and supplier need one written formula, one measurement period, one agreed reference speed, one list of exclusions and one method for assigning each loss to the primary wrapper, upstream supply, downstream equipment, operators, packaging materials or utilities.

A properly designed FAT protects both parties. It converts commercial claims into measurable engineering conditions and prevents disagreements after the line arrives at the customer factory.

Why FAT Disputes Happen

Most FAT disputes begin before the machine is built. A quotation may state that a flow wrapper can run at 220 packs per minute, but fail to explain whether that figure represents empty-cycle speed, mechanical cycle speed, product infeed speed, total output or accepted finished-product output.

A contract may mention OEE without defining planned production time, planned stops, reference speed, accepted product, reject classification, external stops, or upstream and downstream responsibility.

Another common problem is testing a complete line as though every module were independent. A flow wrapper may mechanically reach the required speed, but the complete system may stop repeatedly because of unstable seasoning-sachet feeding, unsuccessful film splicing, insufficient accumulation, inconsistent multipack grouping, carton-opening problems or downstream congestion.

The customer experiences the output of the complete system, not the theoretical speed of its fastest machine. A professional acceptance plan therefore converts every important commercial promise into a measurable test condition.

Industry Pain Points and Verifiable Events

Public food-safety events demonstrate why packaging acceptance must include traceability, material verification, line clearance and rejection logic.

On 30 June 2026, the European Food Safety Authority reported that flavoured noodle products were considered the most likely source of an ongoing multi-country outbreak of Salmonella Stanley. EFSA reported 106 confirmed cases across 13 EU/EEA countries and the United Kingdom, with at least 49 hospitalisations. The public notice did not identify packaging machinery as the cause. The packaging-engineering lesson is that affected SKUs, seasoning batches, production dates, packaging-film versions, case lots and distribution destinations must be traceable quickly.

On 13 May 2026, the U.S. Food and Drug Administration published a recall of Fly By Jing Creamy Sesame Noodles. The company stated that a third-party manufacturer had produced the product on equipment that also processed peanuts under conditions that might have caused cross-contact. The notice did not blame the packaging line, but it highlights the importance of cleaning validation, line clearance, recipe control and material identity.

In July 2026, Nissin Foods announced several seasonal and new-flavour products, including cold-water Cup Noodles and new spicy Donbei products. More product variants create shorter production campaigns, additional artwork, more material changes and greater risk of mixed packaging. FAT therefore needs to test recipe control and changeover, not only the continuous production of one easy SKU.

Maximum Speed Is Not Stable Accepted Speed

Maximum mechanical speed describes what a machine can cycle under favourable conditions. Stable accepted speed describes the sustained rate of saleable finished product under agreed operating conditions. These are not the same.

A FAT specification should state the output unit clearly: primary packs per minute, multipacks per minute, cases per minute or pallets per hour. It should also define product dimensions, film specification, seasoning-sachet combination, carton specification, operator quantity, permitted reject rate and required test duration.

Poemy can engineer high-speed flow-wrapping solutions in the approximate range of 200-230 packs per minute, subject to actual product samples, packaging materials, seasoning-sachet conditions and agreed FAT criteria. The contractual speed should be the accepted output demonstrated under the agreed test conditions, not an unrelated theoretical maximum.

Define Accepted Product Before Testing

An accepted primary pack should contain the correct noodle product and seasoning-sachet combination, use the correct film, have acceptable print registration and seals, carry the correct production code and show no unacceptable product damage.

An accepted multipack should contain the correct number of primary packs, maintain the approved orientation, use the correct outer film, have acceptable seals and contain no trapped or damaged packs.

An accepted case should use the correct carton, contain the approved quantity and arrangement, be closed and sealed correctly and carry the required code or label.

Only accepted output should be used when evaluating stable production speed.

Select Representative Worst-Case SKUs

A multi-SKU FAT does not need to run every product for the same duration. Instead, the buyer and supplier should identify representative worst-case products.

Recommended selections include the shortest and longest bag, the most difficult film, the product with the highest breakage risk, the lightest and most flexible seasoning sachets, the smallest and largest multipacks and the most demanding carton patterns.

Each FAT SKU should represent a specific engineering challenge. The approved list should be frozen before testing so that correct recipes, materials and change parts are ready.

Representative SKU	Engineering challenge
Shortest bag	Limited sealing and cutting window
Longest bag	Product control and film tracking
Light powder sachet	Static and feeding stability
Flexible oil sachet	Positioning and timing
10-in-1 multipack	Count, compression and grouping
Largest carton	Opening, loading and closing stability

Continuous-Run Duration

A ten-minute demonstration cannot prove long-term production stability. The continuous-run period should be long enough to expose temperature drift, film-roll changes, feeder replenishment, accumulation imbalance, repeated minor stops, component heating and normal operator interaction.

For significant projects, several hours of continuous operation usually provide more useful evidence than multiple short demonstrations. Some buyers require an eight-hour continuous test after normal commissioning. The correct duration depends on line complexity, product risk and contractual requirements.

The FAT record should distinguish planned test duration, actual operating time, equipment-related stops, external stops, total output, rejected output, accepted output and corrective actions.

Automatic Film-Splicing Acceptance

Automatic film splicing should be tested repeatedly at the agreed production speed. The test should verify roll preparation, splice execution, web-tension stability, print-register recovery, sealing quality after the splice, the number of discharged packs and the time required to return to stable production.

A useful machine-generated film-waste formula is the amount of film rendered unusable by machine operation divided by total film consumed, multiplied by 100 percent.

The agreement should state whether splice joints, machine-homing products, planned FAT challenge products, defective customer film and first-off inspection samples are included or excluded. Without this definition, the buyer and supplier may calculate different waste rates from the same test.

Seasoning-Sachet Challenge Tests

Seasoning sachets are a critical control point in instant noodle packaging. Powder, oil, liquid and vegetable sachets behave differently because of weight, stiffness, surface friction, static electricity, thickness, centre of gravity, temperature and storage condition.

The FAT should test missing sachets, double sachets, late sachets, feeder-empty conditions, product gaps and restart after replenishment where these functions are included in the system.

The test should verify the complete control chain: abnormal condition, detection, product tracking, rejection, reject confirmation and controlled restart. Where different sachet combinations have similar total weights, a final checkweigher alone may not prove correct composition.

Accumulation and Short-Stop Recovery

An accumulator should protect the complete line from normal short interruptions. It should not be treated merely as additional conveyor length.

The FAT should test upstream product starvation, downstream blockage, controlled buffer filling, controlled buffer emptying, transition between operating modes and restart without collision or miscounting.

Buffer capacity should be expressed in packs and in seconds or minutes of protection at the agreed speed. The FAT should verify the actual usable protection time, because control zones and minimum operating levels can reduce the theoretical capacity.

5-in-1 and 10-in-1 Multipack Acceptance

A multipack system must control pack count, orientation, alignment, grouping, compression, outer-film tracking, sealing and recovery after product gaps.

The FAT should verify count accuracy, stable accepted speed, appearance, sealing quality, operation with normal dimensional variation, response to missing upstream packs and restart after interruption.

Changeover between 5-in-1 and 10-in-1 should be timed using trained production operators. The result should be repeatable without continuous support from the supplier senior design engineer.

Case Packing and Sealing Acceptance

The case-packing FAT should use the agreed carton drawings, dimensions, board grade, flute, dimensional tolerances, pack pattern, pack count and sealing method.

The test should verify carton opening, case presentation, product grouping, loading, closing, tape or hot-melt sealing, downstream discharge and alarm behaviour.

Required case speed equals primary pack rate divided by packs per case. A 450-pack-per-minute line requires 11.25 cases per minute for 40 packs per case, 10.23 cases per minute for 44 packs per case and 9.38 cases per minute for 48 packs per case.

Batch format change and random mixed-carton handling are fundamentally different requirements and must be specified and tested separately.

Packs per case	Theoretical case speed at 450 packs/min
40	11.25 cases/min
44	10.23 cases/min
48	9.38 cases/min

OEE Formula and Responsibility Boundaries

OEE equals Availability multiplied by Performance multiplied by Quality.

Availability is planned production time minus equipment downtime, divided by planned production time. Performance compares actual total output with ideal output at the agreed reference speed. Quality compares accepted output with total output.

Possible supplier-related losses include machine faults, unstable feeding, unsuccessful film splices, incorrect cutting, seal failure, incorrect counts, failure to reject and unstable recovery.

Possible external or planned losses include no upstream product, no packaging film, no seasoning sachets, no cartons, utility failure, planned sanitation and approved customer trials.

Interface losses require special attention. Responsibility should be based on root cause rather than simply the physical location at which the line stopped.

Illustrative OEE Calculation

Assume an eight-hour planned test of 480 minutes. Approved planned sanitation and breaks total 30 minutes, leaving 450 minutes of planned production time.

Equipment-related stops total 27 minutes. Availability is therefore (450 - 27) divided by 450, or 94.0 percent.

The agreed reference speed is 200 accepted packs per minute. During 423 operating minutes, ideal output is 84,600 packs. Actual total output is 79,000 packs, so Performance is 93.4 percent.

Accepted output is 78,050 packs, so Quality is 98.8 percent. OEE is 94.0 percent multiplied by 93.4 percent multiplied by 98.8 percent, or approximately 86.8 percent.

This example is illustrative only and is not a universal OEE acceptance target.

FAT Documentation

The final FAT package should include the approved test protocol, product and material list, machine configuration, software version, recipes, parameter backup, alarm history, continuous-run records, output counts, reject counts, downtime log, film-waste data, changeover records, photos or video evidence, open-issue list, corrective-action owner and target completion date.

Safety testing should include guards, access doors, emergency stops, interlocks, restart behaviour, stored energy and access to moving parts. CE or EN requirements should be applied according to the project scope and destination market.

Operator training, maintenance training, preventive-maintenance schedules, recommended spare parts, software backup and remote-support procedures should be reviewed before shipment.

What Should Happen If FAT Fails?

The contract should define critical failures, major open points and minor punch-list items.

A critical failure affects safety, core performance, product integrity or critical control functions. Shipment should normally not proceed until correction and successful retest.

A major open point requires a written corrective plan, responsible person, completion date, evidence and an agreed release condition.

A minor item does not compromise safety, product quality or core line performance and may be completed before shipment or during installation if both parties agree.

The agreement should also define retest scope, additional materials, travel responsibility, delay responsibility and the documents required for closure.

Procurement Checklist

Before issuing a purchase order, confirm the approved FAT products, films, sachets and cartons; stable accepted-speed target; output measurement unit; continuous-run duration; accepted-product definition; permitted reject rate; film-waste formula; automatic-splice test; sachet challenges; accumulation tests; multipack and carton formats; changeover test; OEE formula and exclusions; operator quantity; safety standard; documentation; training; spare parts; corrective-action process; and retest and shipment-release rules.

✓ Approved FAT products and materials

✓ Stable accepted speed and output unit

✓ Continuous-run duration

✓ Accepted product and reject limit

✓ Film splice and waste rules

✓ Seasoning-sachet challenge tests

✓ Accumulation and short-stop tests

✓ Multipack and carton formats

✓ Changeover verification

✓ OEE formula and exclusions

✓ Safety, documentation and software backup

✓ Training, spares, retest and release rules

Frequently Asked Questions

1.What is the difference between mechanical speed and accepted speed? Mechanical speed is the machine cycle capability. Accepted speed is the sustained rate of saleable products that meet agreed quality requirements.

2.How long should an instant noodle packaging FAT run? The duration should reflect line complexity and risk. Several hours, and sometimes eight hours, provide stronger evidence than a short demonstration.

3.Which SKUs should be tested? Select representative difficult products, such as extreme bag lengths, difficult films, challenging sachets, different multipack formats and demanding cartons.

4.Should film-splice rejects count as waste? This must be agreed before FAT. Normal splice discharge, homing output and deliberate test waste should be identified separately.

5.How should missing seasoning sachets be tested? Introduce controlled challenge products and verify detection, tracking, rejection, reject confirmation and recovery.

6.What should be excluded from OEE? Approved planned stops and clearly external losses may be excluded when the contract defines them. Interface losses should be investigated according to root cause.

7.Can maximum machine speed be used for the Performance calculation? Performance should use the agreed reference speed under defined product and material conditions, not an unrelated theoretical maximum.

8.What if FAT cartons are poor quality? The material condition should be recorded. The FAT should distinguish equipment failure from out-of-specification packaging materials.

9.Should format changeover be tested? Yes, when multi-SKU flexibility is part of the purchase decision or contractual scope.

10.What documents should be delivered after FAT? The approved protocol, results, output and reject data, downtime log, recipes, software backup, open-item list, corrective plan, training documents and maintenance records.

Conclusion

FAT and OEE criteria protect both buyer and supplier when they convert expectations into measurable operating conditions. An effective acceptance plan tests saleable output, difficult SKUs, real production materials, seasoning-sachet control, automatic film splicing, accumulation, 5-in-1 and 10-in-1 multipacking, case packing, controlled short-stop recovery, changeover, rejection, traceability, safety and documentation.

Poemy supports instant noodle manufacturers with high-speed flow wrapping, seasoning-sachet feeding, automatic film splicing, multi-line accumulation, 5-in-1 and 10-in-1 multipacking, multi-format case packing, robotic palletising, FAT planning, OEE definition, remote support and turnkey integration. Final performance is confirmed using actual products, materials and agreed acceptance conditions.

Contact Poemy

For an engineering proposal, send Poemy your product samples, packaging-material specifications, target speeds, seasoning-sachet combinations, multipack requirements, carton drawings, layout and FAT expectations.

Email: poemy@poemypackaging.com
Tel / WhatsApp: +86-15730993174