Custom plastic casings and components for home appliances serve as core protective and decorative parts, directly influencing equipment safety, durability, and aesthetic appeal. By precisely matching material properties with appliance functional requirements, customized processing technologies provide end-to-end solutions from structural design to mass production, meeting diverse needs for temperature resistance, corrosion resistance, and design aesthetics across different appliances.
Custom Home Appliance Plastic Casings

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, easy electroplating
UL94 V-0 Flame Retardant Certification
Polypropylene (PP)
0.89–0.91
-30 to 120
Chemical corrosion resistance, low density, cost-effective
LFGB Food Contact Certification
Polycarbonate (PC)
1.20–1.22
-40 to 130
Impact resistance, high transparency, dimensional stability
UL746C Material Certification
Polyvinyl Chloride (PVC)
1.3–1.45
-15 to 60
Good flame retardancy, weather resistance
IEC 60754-1 Halogen Test Certification
PC/ABS Alloy
1.12–1.20
-30 to 120
Balanced high strength and temperature resistance
RoHS Environmental Certification

(B) Driving Forces of Customization Requirements

1. Safety and Durability

  • Kitchen appliance casings must pass UL94 V-0 certification (1.6mm thickness), resisting ignition in glow wire tests (750℃).
  • Washing machine casings must withstand 200 hours of 90%RH/50℃ humidity testing without deformation or discoloration.

2. Aesthetics and Fitment

  • Surface gloss controlled at 40–80GU (60° angle measurement), supporting matte, high-gloss, and metallic finishes.
  • Mounting hole positioning accuracy ±0.1mm for seamless assembly with internal appliance components.

3. Environmental Adaptability

  • Refrigerator casings require low-temperature resistance (-40℃ impact strength ≥20kJ/m²) and resistance to refrigeration oil corrosion.
  • Air conditioner casings must have UV resistance grade 4 (QUV-A irradiation for 1000 hours, color difference ΔE ≤3).

II. Analysis of Four Core Processing Technologies

(A) Injection Molding: High-Precision Structural Processing

  • Technical Advantages:
    • Enables one-step molding of complex curves (e.g., curved casings, embedded handles) with dimensional accuracy ±0.05mm.
    • Large-scale mold design (1–8 cavities per mold), suitable for 500–5000g casings, production efficiency 200–800 pieces/hour.
  • Process Parameters:
    • Injection pressure 100–160MPa, mold temperature 50–90℃, cooling time 15–30 seconds.
    • Shrinkage control: 0.4%–0.7% for ABS, 1.0%–1.5% for PP, ensuring assembly tolerance ≤0.03mm.

(B) In-Mold Decoration (IMD): Integrated Aesthetic Molding

Process Type
Typical Application Scenarios
Technical Highlights
In-Mold Roller (IMR)
Metallic brushed surfaces for high-end appliances
Pattern accuracy ±0.1mm, friction resistance ≥500 cycles without wear
Two-Color Co-Injection
Transparent windows + main structure
Optical-grade PC transmittance ≥92%, bonding strength with ABS ≥18MPa
  • Technical Advantages:
    • Paint-free process reduces 90% VOC emissions, compliant with EU environmental standards.
    • Surface hardness ≥3H, resistant to detergent corrosion (5% laundry liquid immersion for 72 hours without discoloration).

(C) Blow Molding: Custom Hollow Component Production

  • Process Advantages:
    • Suitable for hollow structures like washing machine inner drums and air conditioner guide covers, wall thickness uniformity ≥95%.
    • Multi-layer co-extrusion integrates wear-resistant/color/UV-resistant layers, extending service life by 30%.
  • Key Parameters:
    • Extrusion speed 5–15m/min, mold temperature 40–70℃, suitable for PP/PVC materials.
    • Dimensional accuracy ±0.3mm, adaptable to large casings (width ≤1000mm).

(D) Surface Treatment Technologies

  • Functional Treatments:
    • Antibacterial treatment: Silver-ion additives (bacteriostasis rate ≥99%), ideal for kitchen appliance casings.
    • Antistatic treatment: Surface resistance ≤10⁹Ω, reducing dust adsorption (e.g., refrigerator casings).
  • Decorative Treatments:
    • Electroplating: Chrome layer thickness 5–10μm, salt spray test ≥500 hours without rust.
    • Wood grain transfer: Texture reduction ≥95%, adapting to high-end home design styles.

III. Full-Process Customization Solutions

(A) Design and Material Engineering

  1. Multi-Dimensional Design Support:
    • Structural Optimization: ANSYS simulation analyzes handle stress distribution to ensure 100,000-time grip fatigue resistance without fracture.
    • Functional Customization:
      • Modular casings: Support quick-release structures (disassembly time ≤1 minute) for easy maintenance.
      • Noise reduction design: Sound-absorbing textures on inner walls (0.5–1.0mm depth), noise reduction ≥10dB.
  1. Precise Material Selection:
    • Kitchen Appliances: PP + 30% talc, resistant to cooking oil corrosion (swelling rate ≤1% after 72-hour immersion).
    • High-End Refrigerators: PC/ABS alloy, low-temperature impact resistance (-30℃ without cracking), electroplated surface for premium texture.
  1. Pre-Processing Technology:
    • Raw material drying: PC moisture content controlled ≤0.02% to avoid bubbles in transparent components.
    • Color matching: Pantone color accuracy ΔE ≤0.8, supporting custom brand color systems.

(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: Haitian servo injection machines (clamping force 1000–5000 tons), daily output 5000–20,000 pieces.
      • Automated production lines: Integrated machine vision inspection, appearance defect recognition rate ≥99.8%.
  1. Comprehensive Testing System:
    • Physical Properties:
      • Drop test: 1.0m drop to concrete, breakage rate ≤0.5% (200-piece sample).
      • Impact resistance: 500g steel ball drop from 500mm height without surface cracks.
    • Environmental Performance:
      • Weather resistance: QUV-A irradiation for 2000 hours, color difference ΔE ≤2, strength retention ≥85%.
      • Chemical resistance: 5% hydrochloric acid/sodium hydroxide immersion for 48 hours without surface corrosion.
    • Certification Support: Provides UL, CE, GB 4706, and other certification reports for global market access.

IV. Multi-Scenario Application Solutions

(A) Kitchen Appliances

  • Microwave Oven Casings: ABS + flame retardant, UL94 V-0 certified, resistant to long-term 100℃ operation.
  • Rice Cooker Casings: PP material + IMR technology, wood grain surface, fingerprint resistance (cleaning cycles ≥1000 times).

(B) Large Appliances

  • Washing Machine Casings: Moisture-resistant PP, waterproof grade IPX4, internal rib design supporting ≥50kg load.
  • Refrigerator Casings: PC/ABS alloy + UV-resistant coating, -40℃ to 70℃ thermal cycling 50 times without deformation.

(C) Small Appliances

  • Air Purifier Casings: ABS + antibacterial treatment, filter installation accuracy ±0.1mm, compatible with HEPA filters.
  • Vacuum Cleaner Casings: Lightweight PP material, wall thickness 1.5–2.0mm, 15% lighter than traditional designs.

(D) High-End Appliances

  • Built-In Oven Casings: High-temperature resistant PC (long-term 150℃), ceramic coating for easy cleaning (oil residue ≤5%).
  • Smart Appliance Casings: IMD technology for integrated touch panels, capacitive sensing accuracy ±0.05mm.

V. Technology Selection Guide

Requirement Type
Preferred Technology
Weight Range
Core Indicators
Delivery Cycle
Personalized Small Batches
3D Printing + Injection Molding
200–2000g
Rapid prototyping, irregular structures
Prototype in 3 days, batch in 15 days
High-End Aesthetic Customization
IMD + PC/ABS
500–3000g
High gloss, superior weather resistance
Prototype in 7 days, batch in 25 days
Large-Scale Standardized Production
Injection Molding + PP
1000–5000g
Low cost, high chemical resistance
Prototype in 5 days, batch in 20 days
Custom home appliance plastic casings achieve full-category coverage from 100g small appliance panels to 5kg large appliance casings through deep integration of material properties, processing technologies, and appliance functions. Whether meeting the oil resistance needs of kitchen appliances or the low-temperature standards of refrigerators, end-to-end technical capabilities ensure each customized solution precisely meets safety, durability, and aesthetic requirements.
For custom solutions using ABS, PP, PC, and other materials, certification testing processes, or production capacity data, contact us for professional support from design development to mass production.

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