We specialize in custom computer power supply plastic cases, using high-quality materials like ABS and PC to ensure flame retardancy, safety, and durability. With flexible customization for dimensions, colors, and surface treatments, our professional mold design and injection molding capabilities enable rapid prototyping and mass production to meet diverse market needs.
Custom Power Supply Plastic Cases

I. Core Material Properties and Application Advantages

(A) Comparison of Mainstream Material Properties

Material Type
Density (g/cm³)
Temperature Range (℃)
Core Advantages
Typical Certifications
Acrylonitrile Butadiene Styrene (ABS)
1.03–1.07
-20 to 80
Easy moldability, high toughness, cost-effective
UL94 V-0 Flame Retardant Certification
Polycarbonate (PC)
1.20–1.22
-40 to 130
Impact resistance, high transparency, dimensional stability
UL746C Material Certification
Polyphenylene Oxide (PPO)
1.06–1.07
-40 to 155
Excellent insulation, chemical corrosion resistance
UL94 V-1 Flame Retardant Certification
Polybutylene Terephthalate (PBT)
1.31–1.53
-40 to 150
Low hygroscopicity, high abrasion resistance
IEC 60243 Dielectric Strength Certification
PC/ABS Alloy
1.12–1.20
-30 to 120
Balanced high strength and toughness
RoHS Environmental Certification

(B) Driving Forces of Customization Requirements

1. Safety Performance

  • Flame retardancy rating must reach UL94 V-0 (1.6mm thickness), passing glow wire test (850℃) without ignition.
  • Insulation resistance ≥ 10¹²Ω (500V test voltage), dielectric strength ≥ 25kV/mm.

2. Heat Dissipation and Structure

  • Heat dissipation hole opening rate ≥ 30%, air resistance coefficient ≤ 0.3 (optimized via CFD simulation).
  • Positioning accuracy of 卡扣 /screw holes ±0.1mm for precise assembly with internal power components.

3. Environmental Adaptability

  • Thermal shock resistance (-20℃ to 70℃ cycling 50 times without cracking), suitable for complex working conditions.
  • Antistatic surface treatment (surface resistance ≤ 10⁹Ω) to reduce dust adsorption.

II. Analysis of Four Core Processing Technologies

(A) Injection Molding: High-Precision Structural Processing

  • Technical Advantages:
    • Enables one-step molding of complex structures (e.g., heat dissipation grilles, mounting bosses) with dimensional accuracy ±0.05mm.
    • Large-scale mold design (1–4 cavities per mold), suitable for 500–2000g power supply cases, production efficiency 500–1000 pieces/hour.
  • Process Parameters:
    • Injection pressure 120–180MPa, mold temperature 60–100℃, cooling time 20–30 seconds.
    • Shrinkage control: 0.4%–0.7% for ABS, 0.5%–0.8% for PC/ABS, ensuring assembly tolerance ≤0.03mm.

(B) In-Mold Decoration (IMD): Integration of Appearance and Function

Process Type
Typical Application Scenarios
Technical Highlights
Texture Molding
Matte/brushed surfaces for high-end cases
Mold surface roughness Ra≤0.2μm, gloss control 40–60GU (60° angle)
Composite Molding
Transparent windows + main structure
Optical-grade PC with light transmittance ≥90%, bonding strength with ABS ≥15MPa
  • Technical Advantages:
    • Paint-free process reduces VOC emissions, meeting environmental requirements.
    • Surface hardness ≥3H, passing 500-cycle friction test without scratches.

(C) 3D Printing: Rapid Prototyping and Small-Batch Customization

  • Process Advantages:
    • Quickly validates irregular structures (e.g., curved heat holes, modular clips), with samples delivered in 3 days.
    • Nylon 12CF material strength up to 180MPa, suitable for high-strength prototype testing.
  • Application Scenarios:
    • Custom server power supply cases (order quantity ≤500 pieces), delivery cycle reduced by 40%.
    • Personalized hole design for modular power supply cases.

(D) Surface Treatment Technologies

  • Flame Retardancy Enhancement:
    • Nano-scale flame retardant modification (5%–10% additive), upgrading flame retardancy to UL94 V-0.
    • Fire-resistant coating (50–100μm thickness), oxygen index ≥28%.
  • Heat Dissipation Optimization:
    • Metallized coating (20–30μm aluminum-based), thermal conductivity increased to 1.2W/(m·K).
    • Micro-structured design (heat fins 3–5mm height, 2–3mm spacing), heat dissipation efficiency improved by 20%.

III. Full-Process Customization Solutions

(A) Design and Material Engineering

  1. Multi-Dimensional Design Support:
    • Structural Optimization: ANSYS simulation analyzes clip stress distribution to ensure 1000-time disassembly without fracture.
    • Functional Customization:
      • Modular power supply cases: Support quick-release structure (disassembly time ≤30 seconds), adaptable to different power modules.
      • Noise reduction design: Muffling structure for heat holes (5–8mm diameter, 15°–20° angle), noise reduction by 5–8dB.
  1. Precise Material Selection:
    • Consumer-grade power supplies: ABS + 20% flame retardant, meeting UL94 V-0 standards with 15% cost reduction.
    • Industrial-grade power supplies: PPO material, volume resistivity ≥10¹⁶Ω·cm, suitable for high-humidity environments (humidity ≤95%RH).
  1. Pre-Processing Technology:
    • Raw material drying: PC moisture content controlled ≤0.02% to avoid molding bubbles.
    • Antistatic treatment: Permanent antistatic agents added (surface resistance ≤10⁸Ω), suitable for precision electronic environments.

(B) Production and Quality Control

  1. Flexible Manufacturing Capability:
    • Rapid Prototyping: 3D printed samples delivered in 48 hours, aluminum mold development cycle 10–15 days (steel mold 30–45 days).
    • Mass Production:
      • High-speed injection lines: Equipped with KUKA robots, daily output 3000 pieces per machine (2-cavity mold).
      • Automated production lines: Integrated visual inspection system, appearance defect recognition rate ≥99.5%.
  1. Comprehensive Testing System:
    • Electrical Performance:
      • Dielectric withstand test: 2000V AC for 1 minute without breakdown, leakage current ≤0.5mA.
      • Insulation resistance: 500V DC test, resistance value ≥10¹³Ω.
    • Mechanical Performance:
      • Drop test: 1.2m drop to concrete, breakage rate ≤1% (100-piece sample).
      • Aging test: QUV-A irradiation for 1000 hours, color difference ΔE≤2, strength retention ≥90%.
    • Certification Support: Provides UL, CE, CB, and other international certification reports for global market access.

IV. Multi-Scenario Application Solutions

(A) Consumer Electronics

  • ATX Power Supply Cases: PC/ABS alloy material, supporting side-transparent window design (transmittance ≥85%), UV coating for anti-yellowing (color difference ΔE≤3 after 3 years).
  • Laptop Adapter Cases: Thin-wall design (1.2–1.5mm thickness), passing 1.5m drop test, 20% lighter than traditional designs.

(B) Industrial Equipment

  • Server Power Supply Cases: PBT + 30% glass fiber, resistant to 120℃ long-term operation, dustproof grade IP54 (dust ingress ≤1g/m³).
  • Automation Equipment Power Cases: PPO material + metal inserts, EMI shielding efficiency ≥40dB, suitable for industrial control environments.

(C) New Energy Sector

  • Energy Storage Power Cases: Fire-resistant PC material, UL94 V-0 certified, supporting IP65 waterproof design (1m water immersion for 30 minutes without water ingress).
  • Vehicle Power Cases: Low-temperature modified ABS (-40℃ impact strength ≥25kJ/m²), adapted to vehicle vibration environments (10–2000Hz frequency, acceleration ≤5g).

V. Technology Selection Guide

Requirement Type
Preferred Technology
Weight Range
Core Indicators
Delivery Cycle
R&D Validation & Small Batches
3D Printing + Injection Molding
200–1000g
Rapid iteration, structural validation
Prototype in 3 days, batch in 15 days
High-End Appearance & Heat Dissipation
IMD + PC/ABS
500–1500g
High flame retardancy, low noise, premium aesthetics
Prototype in 7 days, batch in 25 days
Large-Scale Standardized Production
Injection Molding + ABS
800–2000g
Low cost, high reliability
Prototype in 5 days, batch in 20 days
Custom computer power supply plastic cases achieve full-category coverage from 100g adapter cases to 2kg industrial power cases through deep integration of material properties, processing technologies, and power supply functions. Whether meeting the aesthetic demands of consumer electronics or the strict safety standards of industrial equipment, our end-to-end technical capabilities ensure each customized solution precisely meets requirements for flame retardancy, heat dissipation efficiency, and mechanical strength.
For custom solutions using ABS, PC, PPO, and other materials, certification testing processes, or production capacity data, contact us for professional support from design development to mass production.

Recommended Reading