PFAS-Free Polymer Processing Aids
Qualify nonfluorinated processing-aid candidates in extrusion without assuming incumbent equivalence or universal downstream compatibility.
General technical information published by PAXOMER Inc. to support preliminary material evaluation. It is compiled from the sources cited on this page and has not been independently reviewed or certified by a professional engineer, laboratory or certification body. Values marked typical, illustrative or requiring confirmation are not specifications. Confirm properties, standard editions, regulatory status and suitability for your specific application with the manufacturer and, where the use is regulated or safety-related, with a qualified professional or the relevant authority.
1. Quick answer
Processing-aid programs for extrusion target observable issues such as melt fracture or die buildup. PFAS-free candidate chemistries and carrier packages vary. Claims made for a named manufacturer grade cannot be transferred to an unspecified PAXOMER candidate.
2. What is the product, and what function does it perform?
Processing-aid programs for extrusion target observable issues such as melt fracture or die buildup. PFAS-free candidate chemistries and carrier packages vary. Claims made for a named manufacturer grade cannot be transferred to an unspecified PAXOMER candidate.
Educational qualification guidance. No manufacturer agreement, stocked grade, certification, sample availability or equivalence is established. All numerical limits must come from a verified grade and an agreed test method.
3. Which technical differences distinguish the candidates?
| Candidate class | Purpose to evaluate | Qualification boundary |
|---|---|---|
| PFAS-free PPA concentrate | Extrusion defect evaluation | Carrier compatibility and conditioning time |
| Incumbent fluorinated PPA | Reference formulation only | Legacy carryover can confound transition trials |
| Lubricant or slip additive | Different process or surface function | Do not treat as a PPA equivalent |
4. How should buyers select a candidate for the application?
| Application | Buyer information | Acceptance trial |
|---|---|---|
| Blown film | Resin blend, recycled fraction, die gap and output | Melt fracture plus seal/print/lamination performance |
| Cast film or sheet | Cooling profile and line speed | Optics, gauge and surface uniformity |
| Extruded profiles | Polymer and tooling history | Dimensions, surface and weld behavior |
5. What information should a structured specification request contain?
| Specification field | Information to request | Evidence and interpretation |
|---|---|---|
| Declaration scope | PFAS definition and grade-specific statement | Include carrier, co-additives and revision date |
| Masterbatch composition | Carrier resin, active content, pellet form | Confirm feeding accuracy and resin compatibility |
| Processing response | Pressure, throughput and defect criteria at fixed settings | No guaranteed numerical improvements |
6. How should an application trial establish acceptance?
Document resin lot, baseline output, pressure, melt temperature, die condition and prior PPA use. Agree a purge and conditioning protocol with the line owner. Compare steady-state production after transition; retain time-stamped samples to distinguish carryover from candidate performance.
- Obtain exact-grade TDS and SDS before handling; follow supplier guidance for addition order, storage and equipment.
- Agree acceptance limits, sample identifiers and measurement conditions before the first comparison.
- Retain formulation, batch and process records; repeat promising conditions to check reproducibility before scale-up.
7. What limitations and tradeoffs affect selection?
A short clean run after switching can reflect the prior additive remaining on equipment. A candidate that reduces visible defects may still change haze, coefficient of friction, sealability or surface treatment response. Stop scale-up if equipment limits or downstream acceptance are exceeded.
8. What should a technical enquiry include?
Send the following requirements so an inquiry can be assessed against an actual application: Polymer and resin grades; recycled content; process and die; output/pressure/temperature; defect history; previous PPA; downstream printing, sealing and lamination; PFAS declaration scope.
State trial quantity, recurring demand, destination, timing, required origin and document needs. Commercial capability, export suitability and terms require separate confirmation. No purchasing commitment is created by this page.
9. What evidence is required before approval?
Require grade identity, revision-controlled TDS/SDS, declaration scope, representative trial results and agreed lot acceptance. Ask how changes in composition or production are communicated. Record unresolved questions instead of inferring a specification from a family name.
10. Which sources support the guidance, and what are their limits?
Ampacet: PFAS-free polymer process aid (opens in a new tab)
Public manufacturer sources establish family/function context only. They do not establish PAXOMER authorization, an offer or applicability of a named grade. Trial plans and buyer-request fields on this page are planning aids that need qualified technical review before use. No full product dossier or restricted-substance declaration was obtained.
11. How should an application trial establish acceptance?
Treat a replacement as a change in both additive and qualification evidence. Define what the buyer means by PFAS-free, which materials and manufacturing stages the declaration covers, and what analytical or documentary evidence is required. Do not substitute a broad environmental label for a product-specific statement.
12. Which checks distinguish compatibility problems from process problems?
Run a documented extrusion baseline and candidate sequence using the same resin, die, temperatures and output. Record transition history, melt-surface appearance, pressure, deposits and downstream properties. A good film surface at one operating point does not establish acceptable behaviour throughout the required line window.
13. Which technical differences distinguish the candidates?
| Question | Evidence to record | Interpretation limit |
|---|---|---|
| Material declaration | Written scope and basis for the exact supplied grade | Not a general regulatory conclusion |
| Extrusion behaviour | Melt surface, pressure and deposits under comparable duty | Record transition and steady operating conditions |
| Downstream qualification | Printing, bonding, sealing and required film properties | Surface improvement alone is insufficient |
| Repeat supply | Batch identity and change control | Do not qualify only a one-off demonstration sample |
14. Which manufacturer documents support the purchasing decision?
Ask for the exact candidate grade, carrier system, supplier starting conditions and a written declaration meeting the agreed definition. Agree how the prior additive is removed or managed during transition and how samples are identified. Ampacet describes PFAS-free PPA developments for film extrusion; its manufacturer claims cannot establish the performance or compliance of an unrelated grade.
15. Which sources support the guidance, and what are their limits?
Ampacet: PFAS-free polymer processing-aid development (opens in a new tab)
16. Qualify the PFAS declaration and extrusion result independently
Define the buyer’s PFAS requirement in writing before discussing a replacement. Substance definitions, reporting scope and analytical approaches can differ. A statement about intentionally added substances is not the same as proving the absence of every fluorinated species. Keep supplier declarations, applicable customer requirements and laboratory evidence distinct.
A replacement technology must be assessed in the target resin and extrusion process. Compare surface quality, pressure stability, start-up transition and sustained output with the incumbent and untreated control. Record active-content and carrier differences. A product may meet the requested composition statement while failing line stability or downstream conversion.
Prior equipment history can complicate interpretation of a changeover. Plan sampling and cleaning with the plant and material supplier; do not infer a universally valid purge procedure. Establish acceptance for film optics, treatment, printing, sealing and lamination where applicable. This guide supplies no legal conclusion or blanket compliance claim for a jurisdiction.
17. How should production problems be investigated?
Use the observations below to structure an investigation. They identify possible mechanisms, not a diagnosis from appearance alone. Compare candidate and control under the same defined conditions.
| Observed issue or decision | What to check | Qualification implication |
|---|---|---|
| Declaration says no intentionally added PFAS | Definition, scope, threshold and customer acceptance basis | Do not reinterpret a limited statement as absolute absence |
| Extrusion surface improves only temporarily | Transition time, carrier and steady operating conditions | Measure stable performance after the changeover |
| Extrusion passes but converting fails | Treatment, seal response and coating/adhesive interaction | Qualify the completed material route |
18. Which sources support the guidance, and what are their limits?
These references support the named material or test scope. They do not establish supplier representation, a complete claim audit or a PAXOMER product approval.
https://www.byk.com/en/product/highlights/pfas-free-additive-solutions (opens in a new tab)
19. What should a fluoropolymer-PPA replacement trial measure during changeover?
Record the previous additive, purge procedure, resin, die condition and time to steady behaviour. Compare surface defects, deposits, pressure and accepted output after stabilisation rather than using only the first roll. Verify downstream properties and obtain an exact-grade composition statement. A successful extrusion trial establishes process performance under those conditions, not an unrestricted chemical-absence claim.
20. Which outcomes should a processing-aid trial compare beyond surface appearance?
Define the base resin, existing additive package, regrind, line geometry, throughput and actual process conditions. Record surface observations alongside pressure, stable output, startup transitions and downstream requirements. A processing aid described as PFAS-free still needs a product-specific declaration and a controlled extrusion trial; neither wording nor a short demonstration establishes drop-in equivalence.
Hypothetical output calculation: a line processes 800 kg during the declared trial window, and 744 kg passes the agreed product criteria. Accepted output is 744 ÷ 800 × 100 = 93.0%. If startup material was excluded, report its mass separately and use the same boundary for the control. This is illustrative accounting, not an expected processing-aid benefit.
21. What belongs in a processing-aid substitution record?
Agree the control and decision criteria before the trial.
| Record | What to define | Comparison boundary |
|---|---|---|
| Baseline | Resin, additive package and control run | Keep all composition changes visible. |
| Transition | Startup state, prior material and sampling sequence | Separate transient observations from stable operation. |
| Output | Accepted material, rejects and stated window | Use the same accounting boundary. |
| Downstream | Printing, bonding, sealing or other duty | Confirm required performance after extrusion. |
22. Which observations can change the substitution decision?
If surface defects improve but accepted output falls, inspect startup losses, process changes and downstream rejection reasons. Do not rank the candidate using one attractive photograph. Retain time-stamped observations so a temporary transition is not presented as the steady production result.
23. Frequently asked questions
Is the incumbent dosage automatically transferable?
No. Active fraction, carrier and conditioning differ; use grade-specific guidance and controlled trials.
Can we claim equivalent performance from the family name?
No. Performance belongs to the tested grade and conditions.
Why record the previous PPA?
Residual additive and die conditioning can distort the apparent result.
What numerical dosage or limits apply?
No universal dosage or numerical specification is supplied. Use exact-grade documentation and a controlled formulation trial.
What is needed before procurement approval?
Confirm grade identity, documents, buyer acceptance trials and commercial capability separately.
Is this page a confirmed PAXOMER offer?
No. It is general educational information to support qualification planning.
Can fluorine screening alone establish compliance with every PFAS requirement?
No. Analytical scope and a specific customer or legal requirement must be reconciled by the responsible parties.
Can a PFAS-free PPA be substituted one-for-one?
Equal product addition does not establish equal active content, process behaviour or film performance.
What is required before a public PFAS claim?
Use a precisely defined exact-product declaration and the evidence required for the intended market; this guide does not supply blanket approval.
Can the first clean-looking roll prove a new PPA has fully replaced the previous one?
No. Changeover history and steady-state evidence are needed; appearance cannot establish composition.
Does a better extrudate photograph establish an approved processing aid?
No. Evaluate stable processing, accepted output and the relevant downstream properties.
Should startup scrap be included in a yield comparison?
Define the boundary and use it consistently. If excluded, report it separately rather than hiding it.
Can a PFAS-related label establish drop-in equivalence?
No. Declaration scope and functional equivalence require separate evidence.
24. References
Links inside sections are supplier or standards-body context for the statements they accompany.
Last revised 2026-10-27.
Related guides
Explore further
Product and material pages
Material card: PFAS-Free Polymer Processing Aids (listed in Products & Solutions).
Glossary terms
Intentionally added substance · Analytical reporting limit