trading3d
Light-Blocking PLA Filament 3D Printing Material for Advertising Signs & Indoor Signage Backing and Frames 1.75mm
Light-Blocking PLA Filament 3D Printing Material for Advertising Signs & Indoor Signage Backing and Frames 1.75mm
Couldn't load pickup availability
✔ Ships from China Warehouse via Global Special Line
✔ Tracking provided for all orders
✔ Free Global Shipping on orders over $99
✔ Standard delivery time: 7–12 business days (US/EU)
Create Professional Advertising Signs with Crisp Contours! Eliminate Light Leakage with Specialty Light-Blocking PLA
Manufacturing backing plates or frames for your indoor illuminated signs? Standard materials can cause light leakage, compromising clarity and professional appearance. Developed specifically for light-blocking applications, this high-opacity PLA filament offers superior printability and completely prevents light bleed, ensuring illumination only escapes from designed areas for a clean, sharp visual effect.
Why Your Advertising Signs Need This Light-Blocking PLA
100% Light Blocking: High-pigment concentration provides exceptional light barrier properties, effectively preventing LED light leakage from unintended areas, ensuring pure, clean illumination.
Defined Contours: Combines perfectly with translucent PLA parts to create sharp, well-defined letter edges, enhancing the overall professional quality of your signs.
Printing Stability: Minimal warping and excellent layer adhesion prevent lifting, making it ideal for printing large, flat backing panels.
Excellent Compatibility: Consistent diameter tolerance ensures reliable feeding and prevents jams, compatible with most FDM 3D printers.
Eco-Friendly Material: Derived from renewable resources, low-odor, and safe for printing, suitable for various indoor commercial environments.
Product Specifications
| Material Type | PLA (Polylactic Acid) |
| Color | Opaque (High Pigment) |
| Diameter | 1.75 mm |
| Net Weight | 1 kg / Spool |
| Print Bed | Heated or Non-Heated Bed |
| Recommended Nozzle Temperature | 200°C - 220°C |
| Recommended Bed Temperature | 0°C - 60°C (Using painter's tape or glue stick is advised for better adhesion) |
Applications & How It Works
This Light-Blocking PLA is the core material for creating double-layer indoor advertising signs:
Sign Backing Panel: Serves as the rear enclosure, trapping all light within the sign body, allowing it only to emit through the front translucent PLA panel.
Sign Frames / Baffles: Used to construct the sidewalls of the letters, preventing light leakage from the sides and directing all illumination forward.
Internal Partitions: In complex lightboxes or signs, used to separate different colored LED sources, preventing color mixing.
Pro Tip: Pairs perfectly with our High Light Transmission PLA. Use Light-Blocking PLA for the back panel and frames, and Translucent PLA for the front faceplate to easily assemble professional-looking indoor illuminated letters.
Frequently Asked Questions
Q: Does this light-blocking PLA require a high infill percentage to be effective?
A: Not necessarily. Due to its high inherent pigment density, it provides excellent light blocking even at standard 15%-20% infill. However, 100% infill offers the ultimate guarantee.
Q: How to prevent warping when printing large backing panels?
A: Ensure the print bed is level and clean. We strongly recommend using painter's tape or a glue stick (like PVA-based) to enhance first-layer adhesion. Turning off the part cooling fan for the first 3-5 layers also helps reduce warping.
Q: Can it be used in combination with other colored PLA materials?
A: Functionally, absolutely. Please note that frequently switching between different filament colors during a print can lead to waste. We recommend batch-printing all light-blocking parts before switching materials.
Our Promise
We are committed to providing you with professional-grade 3D printing solutions. Every spool of Light-Blocking PLA undergoes strict quality control to ensure you can complete your projects reliably and efficiently. Our support team is always ready to assist if you need technical guidance or have any questions.
