Product Overview
Polycarbonate (PC) and polymethyl methacrylate (PMMA, acrylic) are the most widely used transparent engineering plastics for medical device and laboratory instrument housings, protective guards and observation windows. PC is renowned for ultra-high impact strength — about 250× that of ordinary glass — while acrylic offers 92% light transmission and superior surface hardness. After CNC precision machining, laser cutting, hot-bending and silk-screen printing, both materials become protective guards, instrument panels, scale windows and equipment housings that meet medical cleanliness and disinfection requirements. Dongguan Chaorong Electronics Co., Ltd. supplies imported and domestic PC/acrylic sheet (1 mm–30 mm) with an integrated production line covering CNC engraving, laser cutting, hot-bending and UV printing, delivering high-transparency, high-precision structural parts for medical device and laboratory equipment manufacturers.
Core Technical Features
1. Transparent Material Performance Comparison
| Property | PC (Polycarbonate) | PMMA (Acrylic) |
|---|---|---|
| Light transmission | ≈88% | ≈92% |
| Impact strength | ≈60–70 kJ/m² (extremely high) | ≈12–16 kJ/m² (moderate) |
| Surface hardness | Lower, prone to scratching | Higher, scratch resistant |
| Service temperature | −40 to +120 °C | −40 to +80 °C |
| Typical uses | Protective guards, safety windows, display panels | |
2. PC: Ultra-High Impact Strength and Weatherability
PC's notched impact strength remains high even at low temperatures, making it the right choice for shatter-proof, splash-proof medical guards and isolation screens. UV-stabilized grades can serve long-term in daylight windows without yellowing.
3. Acrylic: High Light Transmission and Easy Printing
Acrylic's light transmission approaches optical glass, and its harder surface resists scratching. It accepts silk-screen and UV printing readily — ideal for scales, markings and logos on instrument panels and readout windows.
4. Medical-Grade Compliance and Disinfectant Resistance
Chaorong supplies medical-grade PC/acrylic (RoHS and REACH compliant) that withstands routine disinfectants (75% alcohol, hypochlorite) without surface leaching or swelling — meeting daily hospital sanitation protocols.
Typical Applications
Medical Equipment Guards and Isolation Screens
Around dental chairs, diagnostic instruments and radiotherapy equipment, PC guards block liquid splashes and mechanical impacts while preserving operator visibility. Thickness of 3 mm–8 mm is typical, with rounded hot-bend forming for added safety.
Instrument Panels and Scale Windows
Acrylic with CNC-machined cutouts, silk-screened scales and backlight treatment serves as display panels and observation windows on biochemical analyzers and centrifuges — uniform light diffusion and crisp readability.
Laboratory Equipment Housings and Display Parts
Precision-machined PC/acrylic parts are used for fume hood windows, lab bench shields and equipment display enclosures, balancing aesthetics and function.
Selection Guide and Machining Recommendations
Defining Key Parameters
- Choose the material: PC for impact and shatter resistance; acrylic for high transmission, scratch resistance and printed markings.
- Define thickness: guards ≥3 mm; panels 1–3 mm suffice. Chaorong holds machining thickness tolerance within ±0.1 mm.
- Confirm medical compliance: specify RoHS/REACH and disinfectant-resistance requirements.
- Surface protection: hard coating or anti-scratch film is recommended for PC parts to reduce wear scratches in service.
Precision Machining Process Recommendations
- Machine PC/acrylic with single-flute spiral (O-flute) cutters at high spindle speed and low feed to avoid melt-edge and chipping.
- Hot-bend with uniform temperature control (PC ≈150–160 °C, acrylic ≈105–115 °C) to prevent stress whitening.
- Degrease and remove release agents before silk-screen/UV printing to improve adhesion and wipe resistance.
- For volume parts, run first-article light-transmission and fit checks before mass production.
Why Choose Dongguan Chaorong Electronics
Dongguan Chaorong Electronics Co., Ltd. has accumulated deep experience in transparent engineering plastic machining, with full in-house capability across CNC engraving, laser cutting, hot-bending and digital printing. We provide medical device and laboratory instrument manufacturers one-stop service for PC/acrylic structural parts — from material selection and prototyping to volume delivery. With compliant, traceable raw materials and 100% finished-part inspection, we help customers build safe, attractive and compliant medical equipment exteriors and functional components.