Technical guide · Procurement
Technical specifications to request from a nonwoven cleaning material manufacturer
A specification is only useful if it can be measured and enforced. Ask for the parameter, the method, the tolerance and the sampling plan — not just a product name.
Key takeaways
- Ask for parameters with test methods and tolerances, not nominal values.
- Separate substrate, format, cleanliness and (if applicable) liquid data.
- Request lot traceability and a defined change-notification clause.
- Confirm what the supplier will not claim as well as what it will.
- Use the same checklist for every candidate so comparisons are fair.
1. Substrate and construction
- Fibre composition and whether recycled content is present.
- Bonding method: spunlace, needlepunch, thermal, chemical or composite.
- Basis weight with tolerance and test method.
- Thickness with measurement pressure and method.
- Tensile strength in machine and cross direction.
- Edge treatment: slit, sealed, embossed or laminated.
2. Roll and sheet format
- Usable width, overall width and width tolerance.
- Roll length, core diameter, core material and roll weight.
- Unwind direction and splice policy (spliced, splice-free, flagged).
- Packaging: individual wrap, liner, carton, pallet and labelling.
- Storage conditions and shelf life.
3. Cleanliness and handling
Ask how the material is protected from contamination during slitting and packing, whether it is produced in a controlled environment, and how lint or particle release is characterised. If a low-lint claim is made, ask for the method and the result, not the adjective.
4. Impregnated products
| Item | What to request |
|---|---|
| Liquid identity | Chemical family or full composition, grade and supplier |
| Function | Verified role in the cleaning process, not an assumption |
| Loading | Target, tolerance, basis and measurement method |
| Uniformity | Sampling plan and acceptance limits across width and length |
| Volatility / flash point | Values with test methods; storage and transport implications |
| Residue | Method and data relevant to the intended surface |
| Shelf life | Duration, conditions and re-test requirements |
5. Quality and traceability
- Incoming, in-process and release inspection plan.
- Certificate of analysis content and frequency.
- Lot identification and traceability from raw material to delivered roll.
- Nonconformance and complaint process.
- Change control: notification timing and revalidation requirement.
6. What the supplier will not claim
A credible supplier should be able to say where its data ends. Ask whether the product is claimed to remove a specific contaminant, leave no residue or extend roll life, and what evidence supports each statement. A refusal to overclaim is a quality signal, not a weakness.
Use one checklist for all candidates
If each supplier is asked different questions, the answers cannot be compared. Keep the checklist fixed, record "not provided" as a result, and score only what is documented.
Frequently asked questions
Which document should come first: TDS or SDS?
They answer different questions. The technical data sheet describes properties and intended use; the safety data sheet describes hazards, handling and transport. For a dry cloth the SDS may be simple, but for an impregnated product it should identify the liquid and its classification where applicable.
Is a certificate of analysis required for every lot?
It depends on the risk. For a critical cleaning consumable, a lot certificate with the measured values and test methods is reasonable. For a general-purpose material, a declaration of conformity plus periodic testing may be enough. Agree the level in the specification.
What if the supplier cannot provide a test method?
Then the value cannot be verified. Prefer parameters with a defined method and acceptance limit. If a supplier only offers a nominal value without a method, treat it as marketing information rather than a specification.
How should change notification work?
The specification should require written notification before a change to substrate, fibre, binder, liquid, process or production site, with a revalidation requirement. Without that clause, a "same" product can change without your knowledge.
Next step
Request a technical data package
Tell us which parameters matter to your process. We will send the available data and state clearly what is not yet verified.
Typical response time: one business day. Your details stay confidential.