How many folds before failure?
Folds-to-failure measurement
Material Properties · Physical Properties
Folding Endurance Testing
Measure how paper and suitable flexible sheets withstand repeated folding. Plan a laboratory test with agreed specimen direction, tension, conditioning and reporting of folds to failure.
- Price
- from£188 per sample, excl. VATA £45 service fee applies to orders under £300, excluding VAT.
- Turnaround
- 6 working days Preparation and scope dependent
- Available platforms
- Toyo Seiki MIT Folding Endurance Tester
- Typical outputs
- Folds to failure for each specimenDirection and batch comparisonSpecimen and conditioning detailsTest method and endpoint notes
Why this service
What Folding Endurance Testing can help you understand
Repeated folding can reveal differences between sheet materials, directions and batches. TESTDOG reviews your sample and test objective before confirming the folding method and comparison programme.
Does sheet direction affect endurance?
Direction and batch comparison
Which material or batch performs better?
Specification-led test programme
Choose the scope
Start from the question, not the tool
The method, preparation route and reporting depth depend on what you need to decide.
Folds-to-failure measurement
How many folds before failure?
- Best used when
- How many folds before failure?
- Typical result
- Folds to failure for each specimen
- Preparation note
- Protect sheets from creasing and moisture changes; mark each specimen direction.
Direction and batch comparison
Does sheet direction affect endurance?
- Best used when
- Does sheet direction affect endurance?
- Typical result
- Direction and batch comparison
- Preparation note
- Confirm folding settings and acceptance criteria for this material; paper standards do not automatically apply.
Specification-led test programme
Which material or batch performs better?
- Best used when
- Which material or batch performs better?
- Typical result
- Specimen and conditioning details
- Preparation note
- Protect sheets from creasing and moisture changes; mark each specimen direction.
Common outputs
A result package matched to the decision you need to make
Fields, conditions, processing and file formats are confirmed before work begins.
Folds to failure for each specimen reported with the agreed units, sample reference and measurement conditions.
Direction and batch comparison supplied in a labelled format suitable for direct sample or condition comparison.
Specimen and conditioning details provided with the processing basis and quality checks agreed during technical review.
Test method and endpoint notes included when selected in the confirmed reporting scope.
Sample requirements
What to provide before work begins
Provide representative, clearly labelled samples and identify the decision, feature or comparison that matters.
| Suitable sample | Submission requirement | Planning note |
|---|---|---|
| Paper strips | Identify thickness and machine or cross direction. Agree strip dimensions, conditioning and replicate count before preparation. | Protect sheets from creasing and moisture changes; mark each specimen direction. |
| Flexible films or sheets | Send material, thickness and coating details for a suitability review before cutting or dispatch. | Confirm folding settings and acceptance criteria for this material; paper standards do not automatically apply. |
Objective: state the decision, comparison or acceptance criterion the work must support.
Handling and access: declare hazards, instability, confidentiality, file constraints or special logistics before dispatch or transfer.
Questions and answers
Common planning decisions
Short answers to issues that can change preparation, scope, timing or interpretation.
How is folding endurance measured?
A strip is repeatedly folded under a defined tension until the agreed endpoint, commonly breakage. The report identifies the folding method, settings and counting convention.
Can I compare machine and cross directions?
Yes, request a direction comparison and label the sheet orientation. We agree the specimen count and conditioning so that the comparison uses consistent test conditions.
Can I request ISO 5626 or ASTM D2176?
Include the required standard and edition with your enquiry. ISO 5626 and ASTM D2176 concern paper folding endurance; applicability and the available test configuration are confirmed before acceptance.
Are plastic films suitable?
Some flexible films and sheets can be considered after review of material, thickness and expected folding behaviour. A paper test method should not be assumed to validate another material.
How should samples be packed?
Protect sheets from creases, surface damage and moisture changes. Label sample identity and direction; agree dimensions and quantity before preparing or dispatching specimens.
How long will it take?
Typical turnaround is 6 working days after sample acceptance and method confirmation.
Configure the service
Send the information needed to scope Folding Endurance Testing correctly
- Sample form, material, dimensions and quantity
- Feature or decision the result must address
- Required comparison, acceptance criterion or reference
- Preferred output and reporting depth
Folding Endurance Testingfrom£188
A £45 service fee applies to orders under £300, excluding VAT.
Typical turnaround: 6 working days
Configure & Book