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[Outdoor Use] Light-Blocking PETG 3D Printing Filament for Large/Medium/Small Advertising Sign Backing & Frames 1.75mm 1kg Spool

$39.90 USD

~~$69.80 USD~~ $39.90 USD

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color: Black

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✔ Standard delivery time: 7–12 business days (US/EU)

The Ultimate Shield for Outdoor Advertising Signs! Light-Blocking PETG – Eliminates Light Leakage, Defies Sun & Rain.

Your outdoor illuminated signs demand a reliable and durable "skeleton." Backings and frames made from standard materials can degrade under UV exposure, temperature changes, and moisture – becoming brittle, yellowed, and prone to light leakage, which ruins the sign's appearance. Engineered specifically for outdoor advertising letters, this Light-Blocking PETG filament constructs a robust, long-lasting, and completely opaque internal structure with its high toughness, superior strength, and exceptional anti-aging properties. Ensure your signs maintain crisp contours and a professional look in any climate.

5 Reasons to Choose Outdoor Light-Blocking PETG

1. Perfect Light Blocking, Crisp Contours: High-opacity formula ensures 100% of the light is contained within the sign, only escaping through the designed translucent front, creating sharp and clean letter edges.

2. High Toughness & Strength: Offers an excellent balance of impact resistance and tensile strength, withstands bumps during transport/installation and outdoor wind pressure, preventing cracks in frames and backings—far superior to standard PLA.

3. Anti-Aging & Durable: Formulated with UV inhibitors to effectively resist solar ultraviolet radiation, preventing brittleness and color degradation over time, significantly extending the lifespan of outdoor signage.

4. Good Heat Resistance: With a heat resistance of up to 65-70°C, it reliably performs in hot summer conditions, preventing softening or deformation of the backing panel.

5. Printing Friendly: Features a wide printing temperature range and excellent bed adhesion, compatible with various build surfaces for high success rates, making batch production efficient and hassle-free.

Product Specifications & Printing Guide

Material	PETG (Optimized for Outdoor Advertising Signs)
Diameter	1.75mm (±0.03mm)
Density	1.1g/cm³
Nozzle Temperature	220 - 250°C
Build Plate Temperature	60 - 100°C
Net Weight	1kg / Spool
Key Advantages	High Toughness / High Strength / Anti-Aging / Heat Resistance up to 65-70°C

Ideal Applications

This Light-Blocking PETG is the ideal choice for manufacturing:

Backings and Frames for Large, Medium, and Small Outdoor Illuminated Advertising Letters

Internal Partitions and Structural Components for Outdoor Lightboxes

Other Outdoor Products and Parts requiring light-blocking, high strength, and weather resistance

Pro Tip: Pair this with our Outdoor Translucent PETG. Use the Light-Blocking PETG for the backing/frames and the Translucent PETG for the front faceplate to easily assemble a fully weatherproof, high-performance illuminated sign with perfectly matched materials.

Frequently Asked Questions

Q: Why use PETG instead of PLA for outdoor sign backing?
A: PLA is susceptible to moisture absorption and UV degradation outdoors, causing it to become brittle and yellow quickly, leading to cracked backings and light leaks. PETG offers superior hydrolysis resistance, UV stability, and better overall strength and toughness, making it the preferred choice for outdoor applications.

Q: The bed temperature range is wide. What should I use?
A: The 60-100°C range offers great flexibility. It adheres well to beds typically used for PLA (around 60°C). If you experience warping, gradually increase the temperature to 80-100°C and use painter's tape or a glue stick for excellent adhesion.

Q: Any specific printing recommendations?
A: Enabling retraction is recommended to reduce stringing. A part cooling fan speed of 30-70% is advised, as excessive cooling can affect layer adhesion. Thanks to its excellent heat resistance, finished parts are perfectly safe for summer outdoor use.

Quality Promise

We specialize in providing professional-grade 3D printing solutions for outdoor applications. Every spool undergoes strict quality control to ensure precise diameter, vacuum-sealed packaging, and consistent performance. Choosing us means choosing a reliable guarantee for your commercial projects.