The laptop shell is a very common plastic shell. Here are the precautions for making this shell.

1. Material selection and modification process
Substrate adaptability
Mainstream materials:
PC/ABS alloy: accounting for more than 65% (impact strength ≥60kJ/m², heat deformation temperature 110℃);
Bio-based nylon (PA410): carbon footprint reduced by 50%, suitable for high-end business notebooks;
LDS plastic (laser direct forming): contains 20%-30% glass fiber to meet the needs of 5G antenna integration.
Key parameters:
Flame retardant grade must reach UL94 V-0 (1.6mm thickness);
Surface resistance ≤10⁶Ω (anti-static spray compatibility).
Functional modification
Add 0.5%-1% graphene to improve thermal conductivity (shell thermal conductivity ＞3W/mK);
Nano-silicon dioxide coating (thickness ≤5μm) achieves anti-fingerprint + anti-scratch dual effects (pencil hardness ≥2H).
2. Mold design and molding process
Core points of mold
Wall thickness control: 1.2-1.5mm in the main area, ≥2.2mm in the corner reinforcement area (to prevent warping and deformation);
Conformal water channel: spiral cooling channel in 3D printing mold, temperature difference fluctuation ≤±1.5℃;
Exhaust design: open 0.02mm micro exhaust groove (≥1 exhaust channel per 100mm²).
Structural design and functional integration
Mechanical optimization
Strengthening rib layout: using topological optimization algorithm, rib height ≤3 times wall thickness, root R angle ≥0.5mm;
Snap structure: double hook design (plug-in force 25-35N), life>5000 cycle tests;
Drop protection: energy absorption columns are added at the four corners (Shore hardness 70D, compression rebound rate>90%).
Functional fusion innovation
Antenna integration: LDS process realizes millimeter wave antenna (28GHz frequency band, gain ≥5dBi);
Cooling coordination: 0.3mm thick heat spreader is embedded in the mold (thermal diffusion coefficient>400W/mK).
IV. Surface treatment and aesthetic design
Coating technology
IMR (in-mold transfer): 0.1mm texture accuracy (wood grain/carbon fiber effect), wear resistance test>5000 times steel wool friction;
NCVM coating: non-conductive vacuum plating (film thickness 0.2-0.5μm), wave transmittance>95% (5G signal lossless);
Antibacterial coating: silver ion doping (antibacterial rate>99.9%, in line with ISO 22196).
Color management
Adopt Pantone Connect cloud color calibration system (ΔE≤1.5);
UV curing ink (weather resistance>3 years, xenon lamp aging test 2000 hours).
V. Testing, certification and mass production control
Key test items
Environmental reliability:
85℃/85%RH double 85 test for 500 hours (dimensional change rate <0.15%);
-40℃ to 75℃ hot and cold shock 1000 times (no cracking).
Mechanical strength:
Keyboard area load-bearing 50kg (deformation <0.3mm);
Handle fatigue test >25,000 opening and closing times (damping attenuation ≤10%).
Intelligent quality control
Industrial CT full inspection (accuracy 0.5μm, detection of ≥0.1mm³ bubbles/shrinkage);
AI visual sorting (color difference, scratch detection accuracy >99.99%).

Our factory has more than 5,000 cases for plastic shells, and we have sufficient experience in making plastic shells. We can meet all quality requirements of customers. If you need it, please contact us and we will give you the best service