Custom PETG Offset Printing Core Sheet for Card Manufacturing
Wallis PETG offset printing sheet is developed for ID card manufacturers, smart card factories, payment card producers, access-control suppliers, card printers and material distributors requiring stable offset printability, strong lamination performance and reliable multilayer card production. White, transparent and customized PETG sheets can be supplied as printable core layers, supporting layers, inlay layers and transparent overlays.
PETG card production is a system process. Sheet thickness, surface energy, ink chemistry, drying, print coverage, lamination temperature, pressure, cooling, RFID inlay thickness, magnetic stripe and final card dimensions must be validated together. Wallis recommends print-and-lamination trials before bulk orders, especially for payment cards, contactless cards and long-service-life credentials.
PETG can offer high clarity, toughness and good thermal bonding, but generic claims such as “compatible with every offset press,” “five-year card life,” “UV-proof” or “fully recyclable card” require evidence from the exact finished construction. The complete card—not only the raw PETG sheet—must meet the buyer’s dimensional, mechanical, electrical and environmental requirements.
| Product Type | PETG offset printable core sheet and transparent overlay material for multilayer cards |
| Product Family Thickness | 0.05–0.80mm according to current page data; exact range depends on core, overlay, color and custom specification |
| Original Core Reference | 0.095–0.40mm PETG printable core sheet |
| Original Overlay Reference | 0.06–0.10mm PETG transparent overlay |
| Printing Methods | Offset and silk-screen printing; UV digital or other processes require surface and ink qualification |
| Applications | ID, access, membership, hotel key, transport, banking, loyalty, gift, RFID and IC cards |
| B2B Support | Samples, custom gauge and size, ink trials, lamination testing, card-structure review, QC specifications and export supply |
Request PETG Card Sheet Samples and Quote
What Is PETG Offset Printing Sheet?
PETG is a glycol-modified polyester used in transparent and opaque card layers. For offset card production, PETG sheet must provide controlled thickness, flatness, surface energy, whiteness or clarity, dimensional stability and thermal bonding. The sheet can carry printed graphics or form part of the structural and protective layers of a finished card.
Offset Printing Requires a Qualified Surface
PETG surface chemistry differs from paper and PVC. Ink wetting, trapping, drying and adhesion depend on surface treatment, surface tension, ink formulation and press conditions. The printable side should be clearly identified, and treatment level should be checked before printing.
Core Sheet and Overlay Perform Different Functions
A PETG core sheet provides print support, opacity and structural thickness. A PETG overlay is normally transparent and protects the printed layer after lamination. Thickness, surface energy, tensile strength, density and thermal response should therefore be specified separately.
Finished Card Performance Must Be Verified
Raw-sheet data does not prove finished-card life. Bending, torsion, abrasion, chemical resistance, blocking, warpage, heat stability, layer adhesion and electrical function should be tested on the fully printed, laminated, punched and personalized card.
![PETG offset printing process for ID IC card core sheet production]( "PETG Offset Printing Process")
Offset Printing Process
![Offset printed PETG card sheet with high-resolution graphics and color control]( "Offset Printed PETG Card Sheet")
High-Resolution Card Graphics
PETG Core and Overlay Physical Performance
The following values are retained from the original Wallis page and reorganized for B2B review. They should be treated as reference values until test standards, conditioning, tolerances and batch certificates are confirmed for the exact product code.
| Property | PETG Core Reference | PETG Overlay Reference | B2B Buying Note |
| Thickness | 0.095–0.40mm | 0.06–0.10mm | Confirm average, point-to-point tolerance and lot variation |
| Surface Tension | ≥38 dynes/cm | ≥36 dynes/cm on printable side | Agree test method, treated side and maximum storage time before printing |
| Tensile Strength | ≥40MPa | ≥38MPa | Confirm direction, test speed, conditioning and standard |
| Density | 1.30 ± 0.05g/cm³ | 1.27 ± 0.05g/cm³ | Use for material identification and weight planning, not as the only quality criterion |
| Vicat A120 | 78 ± 2°C | 76 ± 2°C | Vicat is not a direct lamination or service-temperature limit |
| Typical Function | Printing layer, card inlay or structural core | Protective overlay for PETG, PVC or compatible composite cards | Approve bonding and environmental aging for the exact layer combination |
![White PETG offset printing core sheet for multilayer ID card production]( "White PETG Offset Printing Core Sheet")
White Printable PETG Core
![PETG sheet card material for offset printing lamination and smart card production]( "PETG Sheet Card Material")
Card-Grade PETG Material
![PETG core and overlay sheet options for professional plastic card manufacturing]( "PETG Core and Overlay Sheet")
Core and Overlay Options
PETG Core Sheet vs. PETG Overlay Film
| Selection Factor | PETG Core Sheet | PETG Overlay |
| Primary Role | Printed graphics, opacity, thickness and structural support | Transparent protection, surface finish and print encapsulation |
| Typical Appearance | White, opaque, translucent or custom color | Clear gloss, matte, frosted or specialty finish |
| Printing | Commonly offset or screen printed | Usually unprinted protection layer; printable specialty overlay requires confirmation |
| Lamination | Must bond with overlay, inlay and additional core layers | Must provide stable adhesion without haze, bubbles or peeling |
| QC Focus | Thickness, color, opacity, surface tension, flatness and printability | Clarity, haze, gloss, texture, bonding, abrasion and scratch performance |
Card Layer Structure and Finished Thickness Planning
Professional cards are normally built from multiple layers. The current ISO/IEC 7810 standard specifies physical characteristics for identification cards, while the common ID-1 format is approximately 85.60 × 53.98mm with a nominal thickness near 0.76mm. The exact PETG stack must account for printed cores, transparent overlays, adhesives, RFID inlays, chip modules, magnetic stripes and compression during lamination.
| Layer | Typical Function | PETG Project Control |
| Front Overlay | Protects artwork and controls gloss or matte finish | Clarity, bond, abrasion, personalization and magnetic-stripe compatibility |
| Front Printed Core | Carries process colors, logos, text and security artwork | Ink adhesion, drying, print coverage and dimensional stability |
| Center Core / Inlay | Builds thickness and may contain RFID antenna or chip | Inlay thickness, cavity, pressure distribution and electrical performance |
| Back Printed Core | Reverse-side graphics and balancing layer | Match front-side thickness and print coverage where possible to reduce curl |
| Back Overlay | Protects print and supports signature panel or stripe options | Balance, bonding, encoding and personalization requirements |
Balanced Layer Design Reduces Warpage
Unequal front and back gauges, asymmetric print coverage or mixed materials can create residual stress and curl. Use symmetrical structures where possible and measure flatness after the finished card has cooled and conditioned.
Nominal Gauges Do Not Equal Finished Thickness
Pressure, shrinkage, ink, adhesive flow, magnetic stripe and electronic components affect the final result. Finished-card thickness must be measured after lamination, cooling, punching and conditioning.
Offset Printing Process for PETG Card Sheets
| Printing Control | Recommended B2B Practice |
| Surface Verification | Identify the printable side, measure surface energy and check for dust, oil, scratches or treatment decay |
| Press and Feeder Setup | Confirm sheet thickness, stiffness, static control, gripper margin, feeder air and delivery stacking |
| Ink System | Use ink formulated for non-absorbent plastic and verify adhesion, drying, flexibility and lamination resistance |
| Water and Ink Balance | Control fountain solution to reduce emulsification, drying delay and image defects |
| Color Calibration | Use approved proofs, density targets, Pantone references and lot-to-lot substrate color control |
| Delivery and Stacking | Limit pile pressure, use appropriate anti-setoff measures and avoid blocking or image transfer |
Plastic Offset Ink Must Be Approved
Paper offset ink may not adhere or dry correctly on PETG. Buyers should confirm oxidative, UV-curable or other plastic-compatible ink systems with the ink and press suppliers, then test the printed sheet through lamination.
Double-Sided Printing Requires Registration and Drying Control
Both sides can be printed when the sheet surfaces and press workflow are suitable. First-side ink must be sufficiently cured before the second pass, and front-to-back artwork should be balanced to reduce curl and color variation.
Ink Drying, Adhesion and Lamination Resistance
| Test | Purpose |
| Tape Adhesion | Checks surface bond after the defined drying or curing period |
| Rub and Scratch | Evaluates handling before lamination and finished-card durability after lamination |
| Stack Blocking | Checks image transfer under pile pressure, time and temperature |
| Lamination Heat Test | Checks color shift, ink migration, bubbling and adhesion after the full heat cycle |
| Chemical Resistance | Evaluates alcohol, cleaner, plasticizer, adhesive and other relevant contact |
| Color and Barcode Check | Confirms portraits, fine text, QR codes and barcodes remain readable after finishing |
PETG Lamination Process Development
Compatible PETG layers can thermally bond during card lamination, reducing dependence on conventional adhesives. However, adhesive-free bonding should not be assumed for every PETG grade, printed ink, PVC layer, RFID inlay or mixed-material structure. Sample peel testing is essential.
Condition the materials: Stabilize core sheets, overlays, printed layers and inlays at controlled temperature and humidity.
Confirm orientation: Record machine direction, transverse direction, treated side and printed side for every layer.
Build a balanced stack: Match front and back gauges and account for chips, antennas, stripes and signature panels.
Run a stepped heat trial: Identify the lowest temperature, pressure and dwell that produce acceptable bonding and flatness.
Cool under controlled pressure: Cooling affects dimensional stability, haze, residual stress and blocking.
Condition before measurement: Check thickness, shrinkage, warpage, peel strength and appearance after recovery.
Lock the approved recipe: Record plate finish, release film, stack sequence, heat profile, pressure, time and cooling.
PETG-to-PVC Lamination Requires Compatibility Testing
PETG and PVC can be used in composite card structures, but differences in softening, shrinkage and surface chemistry may create curl, haze or weak bonding. A tie layer or coated overlay may be required for some combinations.
Vicat Temperature Is Not the Lamination Recipe
Vicat data helps compare material softening behavior but does not directly determine press temperature. Heat transfer through the full card stack, pressure, dwell, plate temperature and cooling must be established experimentally.
PETG Sheet for ID, IC and Payment Card Production
| Card Type | PETG Material Focus | Critical Validation |
| Employee and Student ID Cards | White printable core plus clear overlay | Portrait quality, daily flexing, abrasion and personalization |
| Access and Hotel Key Cards | Printable PETG core with magnetic stripe or RFID inlay | Lock compatibility, encoding, reader function and repeated handling |
| Membership, Loyalty and Gift Cards | High-quality offset print, custom colors and premium overlay finish | Brand color, barcode, scratch resistance and wallet durability |
| Payment and Banking Cards | Controlled multilayer structure with chip, stripe and secure printing | Applicable payment-network, chip-module and finished-card qualification |
| Transport and Campus Cards | RFID/NFC structure with durable printed and overlay layers | High transaction cycles, antenna integrity, reader range and environmental aging |
![PETG offset printing sheet for employee student and access ID card manufacturing]( "PETG Sheet for ID Card")
ID and Access Card Applications
![PETG offset printing core and overlay sheet for bank and payment card projects]( "PETG Sheet for Bank Card")
Bank and Payment Card Projects
RFID, NFC and IC Card Integration
| Component | PETG Card Design Requirement |
| Contactless Chip | Confirm chip model, frequency, memory, protocol, lamination-temperature limit and encoding process |
| Antenna | Protect conductor geometry from pressure, punching and card-edge cutting |
| Prelam Inlay | Match material, thickness, size, bonding surface and thermal shrinkage with PETG layers |
| Contact Chip Module | Control card-body milling, cavity dimensions, module adhesive and surface flatness |
| Magnetic Stripe | Select LoCo or HiCo stripe, overlay construction, stripe position, encoding and abrasion requirements |
| Functional Test | Read, write and encode before lamination, after lamination, after punching and after flex testing |
![PETG offset printing sheet for RFID NFC and smart card manufacturing]( "PETG Smart Card Application")
RFID and Smart Card Structures
![Finished PETG laminated card produced with offset printed core and transparent overlay]( "Finished PETG Card")
Finished Laminated PETG Cards
Cutting, Punching and Personalization
| Process | Quality Control Point |
| Sheet Cutting | Length, width, squareness, print registration, clean edges and stack alignment |
| Card Punching | Card dimensions, corner radius, burrs, whitening, cracking and layer separation |
| Slot and Hole Punching | Position, antenna clearance, edge distance and hanging-load resistance |
| Thermal / Retransfer Personalization | Printer transport, ribbon transfer, surface finish, heat distortion and image durability |
| Embossing or Foil Stamping | Card-body ductility, heat, pressure, foil bond, crack formation and legibility |
| Barcode / QR / Encoding | Scanner readability, data accuracy, encoding yield and post-stress function |
PETG vs. PVC and Polycarbonate Card Materials
| Material | Main Advantages | Key Limitations |
| PETG | Good clarity, toughness, offset-print potential and strong thermal bonding in compatible structures | Requires qualified ink, process control and dedicated recycling infrastructure for finished cards |
| PVC | Established card process, broad supplier base, familiar offset printing and cost efficiency | Lower heat resistance and a different environmental profile due to chlorine-containing polymer chemistry |
| Polycarbonate | High heat resistance, impact strength and laser-personalization capability in dedicated grades | Higher material and processing cost; different printing and lamination conditions |
| Recycled PETG / RPETG | Can reduce virgin resin demand when verified recycled content is used | Color, contamination, clarity, mechanical properties and certificate scope require control |
Recycling and Environmental Claims
PETG is a thermoplastic and may be recyclable in a compatible, dedicated collection and processing stream. This does not mean that every finished PETG card is locally recyclable. Inks, overlays, adhesives, chips, antennas, contact modules, magnetic stripes and security devices can complicate sorting and recovery.
| Claim | Responsible B2B Interpretation |
| Recyclable PETG Sheet | Technically processable in an appropriate PETG-compatible stream; local acceptance must be confirmed |
| Recyclable Finished Card | Requires evaluation of all layers, inks, electronics and local card-recovery programs |
| PVC-Free | Only valid when the complete card structure contains no PVC layers, coatings or components |
| Reduced Carbon Footprint | Requires life-cycle data comparing the exact material, production, service life, transport and disposal scenario |
| Recycled Content | State the percentage, source, mass-balance or physical-content method and certification scope |
Quality Control for Bulk PETG Offset Sheet Orders
| Inspection Item | Recommended Control |
| Thickness Profile | Average gauge, cross-sheet variation, point tolerance and lot consistency |
| Sheet Dimensions | Length, width, squareness, cutting accuracy and edge quality |
| Flatness and Curl | Bow, edge lift, orientation and dimensional recovery after conditioning |
| Color and Optical Quality | Whiteness, L*a*b*, opacity, haze, clarity, gloss and visual approved standard |
| Surface and Treatment | Surface tension, printable side, scratches, contamination, gels, black spots and texture |
| Offset Print Test | Ink wetting, density, trapping, adhesion, drying, blocking, fine text and color consistency |
| Lamination Trial | Peel strength, bubbles, haze, shrinkage, warpage, color shift and plate release |
| Finished Card Test | Dimensions, thickness, bending, torsion, abrasion, heat, chemical and electrical function |
| Traceability | Product code, resin batch, production date, sheet lot, treated side and inspection report |
Production Capability and Process Control
Stable PETG card-sheet supply requires controlled raw material, extrusion or calendering, thickness monitoring, surface treatment, color management, cutting, clean packing and batch traceability. Bulk production should be compared with a signed sample and written specification.
![Wallis PETG offset printing card sheet production line with thickness and surface control]( "Wallis PETG Card Sheet Production Line")
PETG Card Sheet Production and Quality Control
Storage, Handling and Export Packaging
Store sealed PETG sheets flat in a clean, dry and temperature-controlled warehouse.
Keep material away from direct sunlight, heaters, hot roofs and high-temperature containers.
Protect printable and optical surfaces from fingerprints, oil, dust, scratches and abrasion.
Avoid uneven pallet support and excessive stack pressure that may create curl or blocking.
Condition sheets in the pressroom before printing or lamination when warehouse conditions differ.
Use protective interleaving, moisture-resistant wrapping, reinforced cartons and export pallets.
Apply first-in, first-out inventory and recheck surface energy after extended storage.
![PETG offset printing sheet warehouse storage with flat protected stacking]( "PETG Sheet Warehouse Storage")
Flat Protected Storage
![PETG card material warehouse for controlled batch and export inventory]( "PETG Card Material Warehouse")
Batch-Controlled Inventory
![PETG card sheet export warehouse and international shipping preparation]( "PETG Sheet Export Warehouse")
Export Supply Preparation
![Wallis PETG offset printing sheet protected warehouse and export packing]( "Wallis PETG Sheet Export Packing")
Protected Packing for International B2B Orders
Why Choose Wallis for PETG Offset Printing Sheet?
Card-industry specialization: Core sheet, overlay, inlay, printing and lamination can be reviewed as one production system.
Custom thickness and size: PETG sheets can be supplied for different card stacks, presses and imposition layouts.
Offset-printing support: Samples can be evaluated for surface energy, ink adhesion, drying, color and post-lamination performance.
Core and overlay options: White, transparent, matte, gloss and project-specific PETG layers can be discussed.
Smart-card integration: RFID inlay, chip module, magnetic stripe and finished-card testing can be included in development.
Factory-direct B2B supply: Suitable for card factories, printers, converters, system integrators, importers and distributors.
Information Needed for a Fast B2B Quotation
Card application, expected service life and destination market.
Required layer: printable core, center core, transparent overlay or specialty layer.
Thickness, tolerance, sheet size, orientation and quantity.
White, transparent, translucent or custom color and optical requirements.
Offset press model, ink system, UV or conventional curing and artwork coverage.
Lamination press, layer structure, temperature, pressure, dwell, cooling and plate finish.
Finished card size, thickness, corner radius and required standard.
RFID chip, antenna, inlay, contact module, magnetic stripe or signature panel.
REACH, RoHS, recycled content, inspection report or other documentation requirements.
Sample quantity, annual forecast, destination port, packing and delivery schedule.
Discuss Your PETG Card Material Project
Frequently Asked Questions
What is PETG offset printing sheet used for?
It is used as a printable core, supporting layer, card inlay layer or transparent overlay in laminated ID, access, membership, hotel, banking, transport and smart cards.
What PETG thicknesses can Wallis supply?
The current product family lists 0.05–0.80mm. The original technical table references 0.095–0.40mm for core sheets and 0.06–0.10mm for overlays. Confirm the exact range for each product code.
Can PETG sheet be printed on both sides?
Yes, when both sides have suitable surface properties and the printing process supports double-sided registration. First-side ink must be fully cured before the second pass.
Is PETG compatible with every offset printing press?
No universal compatibility should be assumed. Sheet thickness, stiffness, press feeder, ink, fountain solution, curing and delivery system must be tested.
Which offset ink should be used on PETG?
Use an ink approved for non-absorbent plastic substrates. Conventional oxidative, UV-curable and other systems may behave differently, so adhesion, drying and lamination trials are required.
What surface tension is recommended?
The original page references at least 38 dynes/cm for PETG core and at least 36 dynes/cm for the overlay printing side. The final target should match the ink supplier and test method.
Does surface treatment decrease during storage?
Surface treatment can change over time. Store material sealed and verify the printable side and surface energy before production, especially after extended storage.
Can PETG layers be laminated without adhesive?
Compatible PETG layers may thermally bond, but adhesive-free lamination is grade- and structure-specific. Printed ink, mixed materials and inlays may require a tie layer or coated overlay.
Can PETG be laminated with PVC?
PETG/PVC composite structures can be developed, but bonding, shrinkage, curl, haze and aging must be tested. Some combinations require an adhesive or coated overlay.
What lamination temperature should be used?
There is no universal setting. Develop the heat, pressure, dwell and cooling cycle using the actual PETG grades, ink, overlay, inlay and press.
Does Vicat temperature define the lamination temperature?
No. Vicat compares softening behavior under a specified test. Lamination depends on the complete stack, heat transfer, pressure, dwell and cooling.
Can PETG sheet be used for RFID and NFC cards?
Yes. The inlay material, antenna, chip, adhesive, total thickness, lamination pressure and read/write performance must be validated.
Can PETG be used for contact IC cards?
Yes, subject to card-body milling, cavity dimensions, module adhesive, surface flatness, heat exposure and electrical tests.
Can PETG cards include magnetic stripes?
Yes. Select a compatible magnetic overlay or stripe construction and test stripe position, bonding, coercivity, encoding and abrasion.
Will a PETG card automatically last five years?
No. Service life depends on the complete construction, use conditions, card thickness, lamination, personalization and environmental exposure. A life claim requires finished-card testing.
Is standard PETG sheet UV resistant?
UV performance is grade-specific. Do not claim outdoor or long-term UV resistance without weathering, color-change, mechanical and optical test data.
Is a PETG card recyclable?
PETG can be technically recyclable in a compatible stream, but finished cards containing ink, adhesives, chips, antennas and stripes may require specialist collection and processing.
Is PETG always more environmentally friendly than PVC?
Not as an unconditional claim. Environmental performance depends on resin source, manufacturing, card life, recycled content, transport and end-of-life infrastructure.
Can PETG sheets be customized in color and size?
White, transparent, translucent and custom colors plus custom sheet sizes can be discussed according to thickness, optical targets, MOQ and production feasibility.
How should PETG offset sheets be stored?
Store sheets sealed, flat, clean and dry away from heat and sunlight. Protect the surface from dust, scratches, oil and fingerprints, and condition sheets before printing.
Can samples be tested before a bulk order?
Yes. Print, cure, laminate, cool, punch and personalize samples using the intended production equipment before approving the final specification.
What determines the minimum order quantity?
MOQ depends on thickness, size, color, surface, treatment, core or overlay grade, custom cutting, packing and annual demand.
What information is required for an accurate quotation?
Provide layer function, thickness, size, color, offset press, ink, lamination process, finished card specification, chip or stripe requirements, quantity and destination.
Request Custom PETG Offset Printing Sheet Samples
Contact Wallis Plastic for PETG offset printable core sheets and transparent overlay materials for ID, access, membership, hotel, transport, banking and smart card programs. Our team supports custom gauges and sizes, ink qualification, lamination trials, RFID and magnetic integration, QC specifications and factory-direct B2B supply.
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