PVC, PETG & Card Manufacturing Overlays
Compare card core and overlay requirements, layer compatibility, printing and personalization, lamination trials, dimensional checks and supplier evidence.
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
Specify a card overlay as part of the complete card construction, printing/personalization route and intended use. Confirm the exact substrate and surface system, then qualify the laminate and finished card. A resin-family description does not prove compatibility with the buyer's card line.
2. Is the purchase a resin, core film, overlay or finished card?
Define the supply scope first. A pellet resin, extruded/calendered film, coated overlay and finished card involve different responsibilities and evidence. Ask which layer and operations the offer covers. Eastman identifies transaction and identification cards among the applications of a specific copolyester resin. [C1] That is an application example, not evidence that any offered PETG or PVC film is suitable for every card construction.
3. What must the finished card do?
Describe whether the card is for identification, access, transactions, membership or another application. Identify the personalization method, reader/system interface where applicable, handling environment and service-life expectations. Record the customer's controlling drawing and acceptance specification. Avoid claiming universal interchangeability between card products with different functions. Material choice should be tied to the complete system and purchaser's requirements.
4. Which construction and material details should be specified?
- Specification item: Film identity; Information to request or agree: Manufacturer, grade, polymer construction and supplied layer role
- Specification item: Dimensions; Information to request or agree: Thickness and tolerances, roll/sheet size and winding/stacking format
- Specification item: Surface; Information to request or agree: Printable or coated side, coating identity and handling conditions
- Specification item: Optical target; Information to request or agree: Transparency, color, haze/gloss or agreed reference appearance
- Specification item: Layer pairing; Information to request or agree: Core, inks, adhesives/coatings, overlay and embedded components
- Specification item: Conversion; Information to request or agree: Printing, lamination, cutting and personalization route
- Specification item: Finished acceptance; Information to request or agree: Applicable physical, appearance and functional criteria
Request actual manufacturer data rather than inserting universal film gauges or lamination settings. The required construction can differ by application and equipment.
5. How should printing and personalization compatibility be qualified?
Identify the exact ink, printing process and personalization equipment. Ask the film and ink suppliers which surface and process conditions they recommend. Evaluate the printed/finished construction, including any coating or laminate interface. Record drying/curing and handling history. Separate an attractive initial print from evidence of the durability required in use. No blanket ink, laser or printer compatibility is established by this guide.
6. What should a lamination trial record?
Agree on a reference construction, candidate materials, equipment, actual temperature/pressure/time/cooling settings and sampling plan with the process owner. Record layer orientation, conditioning and all changes. Check the resulting bond, appearance, dimensions and relevant card functions. The recommended operating window must come from the actual material/equipment combination; copying a generic recipe risks producing an unqualified construction.
7. Which standards and tests are relevant?
ISO/IEC 7810 covers physical characteristics of identification cards, including construction and dimensions. [C2] Its scope does not establish that an overlay alone is certified or that every card is governed by the same customer's requirements. Determine the applicable card and test-method standards with the purchaser. Request the agreed editions and finished-card results. No dimensional limits, service-life ratings or certification claims are supplied by this guide.
8. How should buyers investigate curl, poor bonding or appearance defects?
Record whether the issue begins before lamination, immediately afterward or after conditioning/use. Identify which interface fails. Compare the reference material, layer orientation and actual processing history. Ask the relevant suppliers to review possible material, coating, ink and process causes. Retain representative good and affected samples. Treat these as investigation paths rather than diagnosing the failure from a photograph or a family-level material name.
9. How should an alternative card material be compared?
Compare the finished construction under the intended process and use, not just the resin's marketing description. Ask what changes are needed in core/overlay pairing, printing, lamination, personalization, handling and quality control. Evaluate total conversion and qualification cost as well as purchase price. A claim about one manufacturer's specific copolyester does not transfer to all PETG or other polymers. No supplier relationship is implied by citing technical literature.
10. What should qualification and purchasing documentation include?
Request exact manufacturer/grade, revision-controlled specification, sample identity, lot traceability, change-notification arrangements and a written trial recommendation. Obtain the offered roll/sheet format, pack protection, shelf/storage guidance, quotation conditions and proposed delivery schedule. Confirm commercial availability directly. PAXOMER does not claim ownership of card technology, accreditation or supply of a particular branded grade through this guide.
11. Which questions should a buyer settle before approval?
The buyer questions and their complete answers are in the FAQ collection below.
12. What should a card-material inquiry contain?
Provide email, card application, purchased layer or resin, core/overlay pairing, printing and personalization route, lamination equipment, required finished-card performance and reference material. Identify which documents and representative samples can be shared and which information is confidential. Request product-specific processing guidance before setting trial conditions.
13. Which related guidance can help the decision?
Related reading: Reading a technical datasheet (/knowledge/understanding-datasheets). A practical guide to polymer selection (/knowledge/polymer-selection).
14. Which sources support this guide?
15. Qualify the complete laminated and personalized card construction
A core film, printable sheet and overlay occupy different positions in the card stack. Define layer order, thickness contribution, coating and the interfaces that must bond. A polymer-family match does not establish lamination, print or personalization compatibility.
Compare lamination using the actual stack and thermal/pressure history. Evaluate flatness, interlayer adhesion and optical appearance after conditioning and relevant ageing. When electronic components are present, mechanical and thermal requirements must be agreed with the card-system designer; a film reference does not qualify the finished electronic product.
Printing and personalization introduce additional interfaces and exposure. Check ink cure, surface preparation, abrasion and any laser-marking or thermal-transfer process with the exact materials. A successful print on a single film does not establish the same result after lamination.
Supply qualification should retain roll or sheet identity, dimensional tolerances, surface treatment, winding or stacking protection and sample history. Use the applicable card-product and test requirements selected by the buyer rather than claiming that an ISO-labelled material alone certifies a finished card.
16. Qualify the complete laminated and personalized card construction: specification and investigation
| Parameter or observation | Technical interpretation | Qualification record |
|---|---|---|
| Curl or dimensional change | Layer balance and thermal/process history | Stack construction and conditioned flatness |
| Delamination | Surface, coating and lamination conditions | Exact interface and failure location |
| Print changes after lamination | Ink, cure, heat and interface interaction | Inspect the final personalized construction |
| Handling or registration defects | Dimensions, flatness and supplied form | Representative printing and lamination trials |
17. Which evidence should accompany approval of a card overlay?
Review the finished card after lamination, printing and personalization, including dimensional change, curl and layer adhesion under the agreed conditions. Keep overlay identity, core identity and process history together. A compliant card dimension does not establish adhesion durability, print compatibility or security functionality.
18. What should a card-material qualification record compare layer by layer?
Use this comparison record to make an enquiry or trial interpretable. It is a buyer worksheet, not a set of material acceptance limits. Agree the exact grade, procedure and decision criteria with the responsible technical team.
| Record | What to document | Comparison condition |
|---|---|---|
| Core and overlay identity | Record exact resin or film designation and surface treatment | Keep the same finished-card construction for the control |
| Printing/personalization | Record ink, print treatment and personalization route | Evaluate after the intended manufacturing sequence |
| Lamination history | Record the supplier-approved process and actual cycle | Inspect curl, appearance and adhesion after conditioning |
| Finished card duty | State dimensions, flexing, exposure and customer requirements | Agree the applicable method and acceptance separately |
19. How do you calculate a nominal card layer stack?
A nominal layer stack is the sum of the stated layers before considering the actual manufacturing response. Identify core, overlays, print and any bonding layer separately. Compression, flow and the measurement state can affect the finished result, so verify dimensions on manufactured cards under the applicable method and customer requirements.
Hypothetical calculation: a 500 µm core plus two overlays of 100 µm each gives a nominal polymer stack of 500 + 100 + 100 = 700 µm, or 0.700 mm. This excludes any additional layers and does not predict the final laminated thickness. No card standard or tolerance is asserted by this example.
20. Which details distinguish a core/overlay trial from a resin substitution?
Use the following application-specific comparison record to make the enquiry and qualification decision explicit.
| Decision area | Evidence to request | How to interpret it |
|---|---|---|
| Layer identity | Exact grade, thickness and treatment for each layer | Retain the approved control construction. |
| Print system | Ink, printing sequence and personalization route | Evaluate the intended combination. |
| Lamination | Supplier-approved process and actual cycle record | Do not transfer one construction’s cycle automatically. |
| Finished-card evidence | Dimensions, appearance, adhesion and duty-specific tests | Qualify the complete stack rather than a resin label. |
21. What should be recorded when a card laminate curls or delaminates?
If curl, delamination or print damage appears, map the failure to the layer and location before changing several materials. Record sheet orientation and whether the construction is symmetric. Compare retained controls from the same process run. An acceptable flat unprinted laminate does not establish compatibility after printing and personalization.
22. Frequently asked questions
Can a clear film be assumed to be a compatible overlay?
No. Verify its surface, layer pairing and performance through the actual lamination and personalization route.
Does mentioning ISO/IEC 7810 certify a film?
No. It identifies a relevant finished-card standard scope. Product and system conformity require the appropriate evidence.
Can PETG and PVC be swapped without a new trial?
Do not assume so. Review construction and process changes and qualify the resulting finished article.
What should an initial inquiry contain?
Provide email, card application, layer role, reference grade/construction and the problem or qualification target. Share confidential drawings only with authorization.
Is an overlay interchangeable with a core film?
No. Surface, bonding, optical and structural functions differ.
Can film conformity certify a finished access or transaction card?
No. The assembled card and any electronic or system functions need their own applicable qualification.
Is a resin offered for card applications automatically compatible with the current overlay?
No. Qualify the core/overlay/print combination and lamination route; an application listing is not a universal pairing approval.
What should be retained after a card-material trial?
Keep material lot identities, the layer construction, actual process record, conditioned samples and the agreed finished-card results.
Does a nominal 0.700 mm stack establish final card thickness?
No. It is an arithmetic sum before manufacturing effects and additional layers are accounted for.
Can I omit the print system from overlay qualification?
No. Evaluate the intended core, overlay, ink and manufacturing sequence together.
Does a material sold for cards meet every card standard?
No. Request the exact evidence and qualify the finished construction for the intended requirements.
23. References
Links inside sections are supplier or standards-body context for the statements they accompany.
Last revised 2026-10-27.
Explore further
Product and material pages
Material card: PVC, PETG & Card Manufacturing Overlays (listed in Products & Solutions).
Glossary terms
Card core · Card overlay · Haze · Lot traceability · PETG · PVC · RFQ