For an overseas buyer, one of the most important moments in a toilet paper machine purchase happens before the machine leaves the supplier's factory.
This is the Factory Acceptance Test, commonly called FAT.
A proper FAT gives the buyer an opportunity to confirm that the machine supplied is the machine that was ordered—and that it can perform the agreed production tasks before it is packed and shipped.
For a buyer purchasing a toilet paper manufacturer's production line, this can significantly reduce the risk of discovering major problems only after the equipment arrives overseas.
A FAT should not simply be a short video showing the machine running.
The buyer and supplier should agree on the test conditions and acceptance criteria beforehand. Current industrial FAT guidance recommends checking the actual machine against the purchase order, approved drawings and agreed test protocol, with measured results and documented non-conformities.
1. First Confirm That You Are Testing the Correct Machine
Before testing production performance, check the machine identity.
Confirm:
Machine model
Serial number
Machine configuration
Voltage
Frequency
Main components
Optional equipment
Production-line arrangement
Compare the actual machine against your purchase order and approved quotation.
If you ordered one configuration but the supplier installed a different motor, control system or optional module, this should be identified before shipment.
2. Check the Production Capacity Under Defined Conditions
Production capacity is usually one of the most important purchasing factors.
Suppose the supplier quotes:
10 tons/day
Do not simply accept that number.
Ask:
At what paper GSM?
At what production speed?
For how many operating hours?
With what raw material?
With what finished roll size?
These conditions can significantly affect actual production.
For example, if a machine produces:
500 kg/hour
and operates for 20 production hours:
500 × 20 = 10,000 kg
or:
10 tons/day
But if actual productive running time is only 16 hours due to setup, cleaning, material changes and other downtime:
500 × 16 = 8,000 kg
The difference is 2 tons per day.
That is why production capacity should be tested under clearly defined conditions.
3. Use the Buyer's Actual Paper Material Whenever Possible
A machine can perform differently depending on the material being processed.
Before FAT, confirm:
Jumbo roll width
Paper GSM
Paper type
Moisture
Roll diameter
Core size
Finished roll specification
If possible, use the same or equivalent material that the buyer intends to use after installation.
This makes the FAT much more meaningful.
A successful test with one paper specification does not automatically prove that every future product specification will run at the same speed.
FAT guidance for production machinery similarly recommends identifying the actual test material and recording its relevant specifications rather than relying on an unspecified test material.
4. Check Finished Toilet Paper Roll Quality
Production speed is not enough.
The finished product needs to meet the buyer's target.
Depending on the machine configuration, inspect:
Roll diameter
Roll width
Perforation
Embossing
Winding tightness
Roll appearance
Cutting quality
Core positioning
Packaging quality
For example, suppose the target finished roll diameter is 110 mm.
If some rolls are 105 mm while others are 118 mm, the buyer should understand why the variation occurs and whether it is within the agreed specification.
The exact acceptance tolerance should be agreed before FAT.
5. Check Machine Performance at More Than One Speed
If the machine is designed for variable-speed operation, do not only watch it run at the easiest speed.
For example:
Low speed → Normal production speed → Target production speed
This can help identify whether the machine remains stable as production speed increases.
The buyer can record:
Actual speed
Output
Product quality
Machine alarms
Operator intervention
Material feeding stability
A machine that runs for five minutes at maximum speed is not necessarily equivalent to a machine that can maintain stable production for a meaningful test period.
6. Check the Complete Production Line, Not Just the Main Machine
If you are purchasing a complete toilet paper production line for sale, inspect the entire line.
For example:
Jumbo Roll → Rewinding → Cutting → Packing → Finished Product
If the supplier only demonstrates the rewinding machine, you have not tested the complete production process.
If the order includes multiple machines, identify which machines are included in the FAT and which functions will be verified separately.
This should be written into the FAT protocol before testing begins.
7. Check Safety Functions
The FAT should also include the safety functions specified in the machine documentation.
Depending on the machine, check:
Emergency stop buttons
Safety guards
Protective covers
Alarm indicators
Access doors
Safety interlocks
Overload protection
Abnormal-condition alarms
These should be tested according to the agreed procedure by authorized personnel.
Industrial FAT guidance specifically recommends checking emergency stops, guards, warning devices and overload protection before shipment.
8. Check the Electrical Cabinet and Controls
The control system should be checked during FAT.
The buyer can verify:
PLC
Touch screen
Inverters
Motor controls
Sensors
Emergency stop circuit
Alarm display
Control-panel labeling
The actual installed components should correspond with the agreed configuration.
If the quotation specifies a particular PLC or inverter brand, confirm that the installed equipment matches the order.
Any approved substitution should be recorded.
9. Check Spare Parts Before Packing
This is a simple but valuable FAT step.
Ask the supplier to place the agreed spare parts together before packing.
Then compare them with the spare-parts list.
For example:
| Spare Part | Ordered Qty. | Actual Qty. |
|---|---|---|
| Cutting blade | 4 | 4 |
| Belt | 2 | 2 |
| Sensor | 2 | 2 |
| Bearing | 4 | 4 |
This takes little time but can prevent problems later.
The same principle should be applied to tools, accessories and change parts.
10. Check the Documentation Before Shipment
The FAT is also a good opportunity to check the documentation package.
Request:
Operation manual
Maintenance manual
Electrical drawings
Parts list
Spare-parts list
Machine layout
Packing list
Warranty information
FAT report
The documents should correspond to the actual machine.
Current FAT guidance recommends reviewing manuals, drawings, spare-parts lists and other documentation against the as-built equipment rather than waiting until installation.
11. Record Problems Instead of Simply Saying “Passed”
This is an important point for international buyers.
A FAT report should not simply say:
Machine tested successfully.
A stronger report records:
Target → Actual Result → Acceptance Criteria → Pass/Fail → Corrective Action
For example:
| Test | Target | Actual | Result |
|---|---|---|---|
| Production speed | 180 m/min | 178 m/min | Pass |
| Roll diameter | 110 mm | 109–111 mm | Pass |
| Paper width | 100 mm | 100 mm | Pass |
| Emergency stop | Functional | Functional | Pass |
The exact values should come from the buyer's agreed specification.
This creates objective evidence rather than relying on verbal statements. FAT guidance similarly recommends recording measured results and documented corrective actions rather than using vague statements such as “test passed.”
12. What If the Machine Fails a FAT Test?
Do not automatically cancel the order.
Manufacturing equipment can have issues during testing.
The important thing is to document the problem.
For example:
Issue: Finished roll diameter exceeds agreed tolerance.
Action: Supplier adjusts the relevant setting.
Retest: Production run repeated.
Result: Diameter now meets agreed specification.
Status: Closed.
For a major problem, the buyer can require correction and retesting before shipment, depending on the purchase contract.
The key is to have a written corrective-action record.
13. A Practical FAT Example
Imagine a buyer orders a toilet paper line with a planned output of 8 tons/day.
The agreed FAT includes:
8-hour production test
Specified jumbo roll
Specified paper GSM
Target finished roll diameter
Target paper width
Product appearance check
Safety-function test
Spare-parts verification
Documentation review
During the test, the machine produces:
4.2 tons in 4 hours
Equivalent production rate:
4.2 ÷ 4 = 1.05 tons/hour
If the machine maintains this rate for 8 productive hours:
1.05 × 8 = 8.4 tons/day
The result exceeds the target under the agreed test conditions.
This is much more useful to a buyer than simply watching a 30-second factory video.
14. Ask for the FAT Video and Final Report
For international buyers who cannot travel to China, a remote FAT can still be useful.
Ask the supplier to record:
Machine nameplate
Complete machine
Control panel
Production test
Finished products
Safety functions
Key components
Spare parts
Packing process
The buyer should also receive the final FAT report.
Video evidence is useful, but it should support—not replace—the agreed FAT procedure and documented acceptance criteria.
15. FAT Can Protect Your Investment Before Shipment
Once a machine is packed into containers and shipped overseas, correcting a major problem becomes much more expensive and time-consuming.
Before shipment, the supplier's engineers, technicians and production team are still available at the factory.
That makes FAT one of the most valuable opportunities to identify and correct problems.
For a buyer purchasing from a toilet paper machine supplier, the goal is simple:
Find the problem before the machine leaves the factory—not after it arrives at your factory.
Choose a Supplier That Is Confident About FAT
A professional toilet paper machine manufacturer should be willing to define what will be tested, how it will be tested and what constitutes acceptance.
Before ordering, ask the supplier:
Can we conduct a factory acceptance test?
What material will be used?
What production speed will be tested?
What output will be recorded?
How will finished-product quality be checked?
Will safety functions be tested?
Can the FAT be witnessed by video?
Will we receive the final FAT report?
What happens if a test fails?
Will the machine be retested after correction?
A supplier that can answer these questions clearly is usually much easier to work with during an international machinery project.
For overseas buyers, a successful FAT is more than a machine demonstration. It is the final opportunity to verify the equipment, production performance and agreed configuration before the machine begins its journey to your factory.