1. Fundamentals of PC Board and Acrylic Sheet
In the field of industrial manufacturing and commercial display, PC board (polycarbonate) and acrylic sheet (PMMA, also known as organic glass) are the two most widely used transparent/semi-transparent plastic sheets. Each has distinct characteristics suitable for different application scenarios.
1.1 Material Properties Comparison
| Property | PC Board (Polycarbonate) | Acrylic Sheet (PMMA) |
|---|---|---|
| Light Transmittance | 88%~92% | 92%~93% (optical grade >99%) |
| Impact Strength | 250x better than ordinary glass | 10~16x better than ordinary glass |
| Temperature Range | -40°C ~ +120°C | -30°C ~ +80°C |
| Hardness (Mohs) | 2~3 grade | 3~4 grade (harder, more scratch-resistant) |
| Flame Retardancy | V-0 (flame-retardant grade) | HB~V-2 (depends on grade) |
| Weather Resistance | Excellent, UV-resistant | Long-term outdoor use requires UV protection layer |
| Density | 1.2 g/cm³ | 1.19 g/cm³ |
| Cost | Medium to high | Low to medium |
1.2 Quick Selection Guide
Choose PC Board: When high impact resistance and safety (protective covers, equipment guards), long-term outdoor use, flame retardancy (V-0 grade), or thermoforming are required.
Choose Acrylic Sheet: When optical clarity is the priority (display cases, light boxes), primarily indoor use, screen printing/spray painting/UV printing, or cost-effectiveness with good appearance.
2. Precision Fabrication Processes for PC Board and Acrylic Sheet
2.1 CNC Precision Cutting
CNC machining centers are used for high-precision cutting of PC board and acrylic sheet:
- Laser Cutting: Precision ±0.1mm, suitable for small batches and complex curves; edges have slight scorching marks (deburring can resolve this); maximum machining size typically 1500×900mm
- CNC Routing: Precision ±0.05mm, smooth edges without scorching, preferred for precision parts; supports complex 2D contours and cavity machining
- Saw Cutting: Suitable for straight-line large panel cutting; low cost, relatively lower precision (±0.5mm), suitable for large-batch simple shapes
2.2 Drilling and Tapping
- Precision Drilling: Carbide drill bits are used, spindle speed controlled at 3000~8000 RPM to prevent edge chipping; deburring required after drilling
- Countersunk/Flat Head Holes: Used to hide fastener heads; angles typically 90° or 120°, depth tolerance ±0.1mm
- Cable/Wire Through Holes: Cable exits for equipment panels; deburring required to prevent cable scratches
- Hollow Carving: CNC carved text and patterns, depth 0.1~3.0mm; back-carving available (carved from the back, light-transmitting effect when illuminated)
2.3 Surface Treatment Processes
| Process | Effect | Application Scenario |
|---|---|---|
| Sandblasting/Frosting | Surface frosted, diffused light reflection, delicate touch | Anti-slip panels, privacy screens, lamp shades |
| Diamond Polishing | High-gloss transparent, crystal-clear clarity | High-end displays, crafts |
| Screen Printing | Precise patterns and text, rich colors, durable | Equipment nameplates, control panels |
| UV Printing | Vivid, realistic patterns, suitable for single-piece customization | Personalized displays, one-piece minimum order |
| Thermoforming | 3D shaped parts, seamless, one-step forming | Display cases, curved panels, light boxes |
| Gold/Silver Plating | Metallic texture, premium decoration | Display props, brand signage |
2.4 Bonding and Assembly
- Acrylic-specific Adhesive: PMMA-to-PMMA bonding uses chloroform or specialized acrylic adhesive; high transparency after curing, nearly invisible seams
- PC Board Bonding: UV-cured adhesive or silicone recommended to avoid stress cracking; PC is sensitive to most solvents, requiring careful adhesive selection
- Structural Assembly: Snap-fit + screw combination is recommended to avoid structural failure risk from adhesive-only bonding; stainless steel corner brackets can be used for reinforcement
3. Typical Application Scenarios for Industrial Display Boards
3.1 Equipment Nameplates and Control Panels
Factory equipment and instrumentation panel markings require:
- Screen Printing Process: Equipment model, parameters, operating instructions, warning labels; colors can be matched to Pantone color standard
- Back-lit Engraving: LED backlight shines through the engraved text/graphics for a striking visual effect, commonly seen on high-end equipment panels
- Chemical Resistance: Resistant to alcohol and cleaner wiping without fading; UV-resistant ink available for outdoor use
- Thickness Selection: 2.0~3.0mm is the common nameplate thickness, balancing strength and cost
3.2 Factory Floor Visual Management Boards
- 5S management boards and workshop production information bulletin boards (content can be changed; card-style design)
- Assembly line station instruction signs (displaying station number, person in charge, current process)
- Acrylic display board stands: transparent base + display board panel, clean and modern, reusable
3.3 Safety Signs and Warning Boards
- PC flame-retardant floor evacuation guide signs: Compliant with fire safety requirements (GB 13495.1), V-0 flame retardancy, suitable for outdoor use
- Workshop hazardous area warning signs: High-definition UV printing + reflective film, high-contrast colors (yellow/black, red/white color schemes)
- Equipment Status Indicator Signs: Combined with LED lights to display red/green/yellow status, visible distance exceeding 10m
- Occupational hazard notification boards: Per regulatory requirements, PC board + screen printing, suitable for long-term outdoor use
3.4 Display Cases and Display Fixtures
- Retail store acrylic display cases and display stands (widely used for jewelry, cosmetics, and digital products)
- Museum/exhibition transparent display covers (high transparency, does not affect exhibit viewing)
- Sample display cabinets (LED light strips can be added to enhance display effect; brand logo can be screen printed on the base)
4. Common Thickness and Specification Selection for PC Board and Acrylic Sheet
| Application | Recommended Thickness | Recommended Material | Notes |
|---|---|---|---|
| Name-card Style Nameplate | 1.0~2.0mm | PC/Acrylic | Lightweight, adhesive mounting |
| Equipment Panel | 2.0~5.0mm | PC (flame-retardant) | Balances strength and weight |
| Display Case Side Panel | 3.0~8.0mm | Acrylic | Structural strength requirement |
| Protective Cover/Guard | 3.0~10mm | PC (high-impact) | High impact resistance requirement |
| Display Pedestal Base | 10~20mm | Acrylic | High stiffness requirement |
| Safety Signs | 2.0~3.0mm | PC (V-0 flame-retardant) | Fire code compliance |
Standard Sheet Sizes: 1220×2440mm, 1000×2000mm; can be cut to any smaller size with no minimum order quantity restriction.
5. Cost Control Recommendations for PC Board and Acrylic Sheet Processing
- Prioritize Batch Orders: CNC machining is charged by machine hours; batch production can significantly reduce per-unit cost; a minimum batch of 10 pieces is recommended
- Standardize Specifications: Prefer standard thicknesses (2/3/5/8/10mm) to reduce material waste
- Simplify Processes: Limit screen printing color count to 2~3 colors to reduce setup and color change time
- Standardize Drawings: Provide CAD drawings in DXF/DWG format with tolerance specifications to reduce communication costs
6. Precision Fabrication Services from Dongguan Chaorong Electronics Co., Ltd.
Dongguan Chaorong Electronics Co., Ltd. provides one-stop precision fabrication services for PC board and acrylic sheet, shortening the supply chain and reducing communication costs for customers:
6.1 Processing Capabilities
- Cutting: Laser cutting, CNC routing, saw cutting; maximum machining size 1500×900mm, precision ±0.05mm
- Drilling/Routing: Any shape per drawing; minimum hole diameter 1.0mm
- Surface Treatment: Sandblasting, diamond polishing, screen printing (Pantone color), UV printing, thermoforming, bonding
- Assembly: Finished product assembly, including accessory installation (screws, brass standoffs, edge wrapping, LED light strip installation)
6.2 Custom Process
- Requirement Communication: Customer provides drawings (CAD/SolidWorks/PDF) or sample photos
- Process Evaluation: Our engineers review drawings and provide process recommendations and quotation
- Prototype Confirmation: First article prototype made for customer confirmation before batch production
- Quality Inspection: Full inspection before shipment; outgoing inspection report provided
6.3 Fast Response
- Small Batch: 1~50 pieces, 3~5 day delivery
- Medium Batch: 50~500 pieces, 5~7 day delivery
- Large Batch: 500+ pieces, 7~15 day delivery
The company is located in Dongguan, a manufacturing hub, and can accept custom orders from customers nationwide with convenient logistics and same-day quotation for samples.