What Is Just Sintra Board?
Just Sintra Board is an expanded PVC (polyvinyl chloride) foam sheet product — commonly called Sintra, foamboard, or PVC foam board in the Philippine signage industry. It is manufactured by extruding PVC with a foaming agent to create a closed-cell foam core, resulting in a board that is lightweight, rigid, waterproof, and easy to cut, print on, and fabricate.
Just Sintra Board is available in six grades: Versatile White, Bluish, Black, Colors, Lite, and HD. Thickness ranges from 1.5mm to 20mm, with sheet sizes up to 4×10ft (1220×3050mm).
Just Sintra Board Grades Explained
| Grade | Description | Best For |
|---|---|---|
| Versatile White | Standard white expanded PVC, matte surface | General indoor signs, direct printing, routed letters |
| Bluish White | Slightly cool-white tone PVC board | Indoor displays where neutral tone matters |
| Black | Through-color black expanded PVC | Retail displays, dark-theme signage, clean edges on cut shapes |
| Colors | Various solid colors, through-body tinting | Color-coded signage, wayfinding, branded displays |
| Lite | Lower-density grade, extra lightweight | Trade show graphics, portable displays, exhibition panels |
| HD (High Density) | Higher-density grade, harder surface | CNC routing, detailed carving, dimensional letters, long-term outdoor |
Technical Specifications
| Specification | Value |
|---|---|
| Thickness Options | 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm |
| Sheet Sizes | 4×6ft, 4×8ft, 4×10ft (1220×3050mm) |
| Material | Expanded PVC (Polyvinyl Chloride) foam |
| Surface | Smooth, paintable, printable (UV flatbed, solvent) |
| Water Resistance | Excellent — fully waterproof |
| Chemical Resistance | Good |
| Machining | Knife cuttable, router compatible, laser cuttable (CO2), drill compatible |
Printing on Sintra: Just Sintra Board accepts direct UV flatbed printing and eco-solvent printing with a PVC-compatible ink primer. Always test adhesion on the specific grade before production runs.
Common Applications
- Indoor Signage & Displays: The most common use — Sintra Board is light enough to mount on walls, ceilings, and display fixtures without heavy hardware.
- Routed Dimensional Letters: HD grade is ideal for CNC-routed letters and shapes — clean edges and a harder surface than standard grades.
- Point-of-Purchase (POP) Displays: Lightweight and easy to fabricate into 3D display structures.
- Trade Show & Event Graphics: Lite grade panels are carried by hand without fatigue.
- Outdoor Signs (short-term): UV-stable grades can handle outdoor exposure for 1–2 years; pair with UV laminate for longer life.
Which Grade for Your Shop?
Start with Versatile White 3mm and 5mm (4×8ft) — this covers the majority of indoor sign orders. Add Black 3mm for retail and design work. For shops doing CNC letter carving, stock HD grade 10mm and 15mm. Lite grade is worth keeping for trade show customers who need ultra-light panels.