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PETG (Polyethylene Terephthalate Glycol) is a modified thermoplastic polyester derived from PET with the addition of glycol. It combines the printability of PLA with the durability of ABS, offering high strength, high toughness, and excellent transparency.
PETG is odorless and non-toxic during printing, balancing practicality and aesthetics. It is a popular mid-to-high-end general-purpose material in 3D printing, suitable for most functional and aesthetic printing applications.
Derived from PET with glycol modification, it improves crystallinity, transparency, and toughness, distinguishing it from the brittleness and high crystallinity of standard PET.
Combines rigidity and toughness, impact-resistant and flexible, overcoming PLA brittleness and ABS warping for versatile applications.
Naturally transparent with high gloss, suitable for transparent structural parts and refined aesthetic parts, balancing practicality and aesthetics.
Non-toxic and odorless. Complies with FDA food contact material standards (21 CFR). Ideal for children's toys, decorative items, and everyday functional prints.
Combines rigidity and toughness, impact-resistant and flexible, solving the pain points of PLA brittleness and ABS warping.
Heat resistance around 65-75°C, better than PLA; resistant to acids, alkalis, and common solvents for various environments.
Non-toxic and odorless, FDA food-contact certified, suitable for food-contact and children's toy applications.
Strong interlayer adhesion, low shrinkage, large prints resist deformation; naturally transparent with excellent surface quality.
UV-resistant and aging-resistant, suitable for outdoor applications, with better weatherability than PLA.
Can be sanded, bonded, and polished; easy post-processing for refined aesthetic parts.
eSUN continues to invest in PETG R&D, driving performance improvements in print appearance and forming stability through modification technology and patented processes, while continuously refining its compliance certification system.
Good toughness, impact-resistant, not brittle, combining rigidity and flexibility.
Heat resistance 65-75°C, UV-resistant, better weatherability than PLA.
No odor during printing, FDA food-contact certified.
Strong interlayer adhesion, low warping, high success rate for large and complex prints.
Naturally transparent, high gloss, refined appearance for transparent and colored parts.
Resistant to acids, alkalis, and common cleaners for various environments.
| Feature | Description | Impact |
|---|---|---|
| High Hygroscopicity | Absorbs moisture easily; when damp, prints become brittle with bubbles | Requires sealed dry storage |
| Printing Requirements | Requires 230-260°C extrusion, 75-90°C heated bed, controlled cooling | Higher equipment and tuning threshold than PLA |
| Stringing | Prone to stringing during printing | Requires precise retraction calibration |
| Long Degradation Cycle | Petroleum-based, takes decades to decompose naturally | Not an eco-friendly biodegradable material |
Enhanced modified PETG, further improving toughness and printing stability, suitable for functional structural parts and aesthetic prints.
Silk-gloss surface PETG, prints with metallic silk texture, suitable for aesthetic parts and creative products.
Carbon fiber reinforced PETG, improved rigidity and dimensional stability, suitable for functional structural parts and wear-resistant scenarios.
Anti-static PETG, suitable for electronic component packaging and anti-static applications, preventing static damage to sensitive devices.
| Industry | Typical Applications | Material Value |
|---|---|---|
| Outdoor Products | Outdoor signs, gardening tools, outdoor protective cases, garden ornaments | UV-resistant, good weatherability, suitable for outdoor use |
| Electronics & Consumer Electronics | Electronic enclosures, insulating parts, custom protective cases, transparent decorative parts | Good toughness, insulating, excellent transparency |
| Creative & Design | Transparent vases, lighting, decorative ornaments, art models | Naturally transparent, high gloss, refined appearance |
| Toy & Creative Industry | LEGO-type bricks, figurine models, creative ornaments, educational toys | EN-71-3 toy certified, safe and non-toxic |
| Automotive | Interior trim, dashboard decoration, lamp covers, small functional parts | Heat-resistant, aging-resistant, suitable for in-car environment |
| Mechanical Parts | Low-to-medium load, wear and corrosion resistant scenarios | Chemical corrosion resistant, good toughness, suitable for functional parts |
A domestic customer used PETG-ESD to print anti-static product enclosures, suitable for electronic component protection.
A US customer used PETG to print aquarium decorations, combining transparency with water and weather resistance.
Benchmark materials: PLA, ABS
| Comparison Dimension | PLA | PETG | ABS |
|---|---|---|---|
| Comprehensive Performance Balance | Brittle, insufficient toughness | Balances rigidity and toughness, impact-resistant, flexible | Good toughness but prone to warping |
| Heat Resistance | Softens and deforms above 60°C | Heat resistant 65-75°C, better than PLA | Heat resistant ~100°C, better than PETG |
| Optical & Appearance | Mostly solid and semi-transparent | High transparency, can make transparent structural parts | Completely opaque |
| Weatherability & Environment | Not suitable for outdoor use | UV-resistant, weatherable, short-term outdoor use | Average weatherability, degrades outdoors |
| Printing Experience | Low warping, easy to print, minimal stringing | Strong interlayer adhesion, low warping, but prone to stringing | High warping risk, irritating odor during printing |
| Environmental & Safety | Bio-based biodegradable, non-toxic, odorless | Petroleum-based, non-toxic, odorless, non-degradable | Petroleum-based, releases irritating odor during printing |
| Positioning | Entry-level printing, creative models, educational aids, display parts | Indoor/outdoor general aesthetic parts, transparent parts, functional parts | High-strength, heat-resistant engineering applications |
| Parameter / Operation | Recommended | Notes |
|---|---|---|
| Extrusion Temperature | 230 - 260°C | Fine-tune based on brand and model |
| Heated Bed Temperature | 75 - 90°C | Improves first-layer adhesion, reduces warping |
| Drying Temperature | 60°C | Recommended >8H after long storage |
| Cooling Fan | Moderate control | Over-cooling affects interlayer adhesion |
| Retraction Distance | Precise calibration | PETG is prone to stringing, optimize retraction |
| Storage | Sealed and dry | Prevent moisture absorption, use a dry box |
The above parameters are for reference only. Please fine-tune based on your printer model, nozzle, and model geometry. This guide does not replace the official parameter sheet for specific product specifications.