Home> Company News> What are the production process, materials and features of plastic injection molded shells for household appliances ?

What are the production process, materials and features of plastic injection molded shells for household appliances ?

2025,07,10
Hd0bb076b7f23494e92e29e9f70ad3ce
Domestic appliance plastic injection molded shells are widespread due to their toughness, inexpensiveness, and simplicity of design. Below is an overview of their **production process, materials, and features**:
 
---
 
### **1. Production Process (Injection Molding)**
Plastic shell production involves the following several main steps:
 
#### **Step 1: Mold Design**
- A close tolerance mold (usually steel or aluminum) is developed from the 3D model of the appliance.
- The mold has cavities, cooling channels, and ejection mechanisms.
 
#### **Step 2: Material Preparation**
- Hygroscopic plastic pellets (e.g., ABS, PP, PS) are dried and charged into the injection molding machine.
 
#### **Step 3: Injection & Melting**
- Plastic pellets are melted in the barrel (heated to 200–300°C, depending on material).
- Molten plastic is injected at high pressure (500–1500 bar) into the mold cavity.
 
#### **Step 4: Solidification & Cooling
- The plastic is solidified into the desired shape by cooling the mold (with water passages).
- Cooling time depends on thickness (approximately 10–60 seconds).
 
#### **Step 5: Ejection & Finishing**
- Ejector pins push out the part as the mold opens.
- Post-processing like trimming, deburring, surface treatment (like painting or adding texture) can be done.
 
#### **Step 6: Quality Inspection**
- Dimensional checks, stress tests, and visual checks for quality.
 
u4126562762,2762844699fm253fmtau
 
### **2. Common Materials Used**
The choice of material is based on the appliance's needs (strength, thermal resistance, appearance, etc.):
 
| **Material** | **Properties** | **Typical Applications** |
|-------------|--------------|------------------------|
| **ABS** (Acrylonitrile Butadiene Styrene) | High impact strength, smooth finish, paintable | Refrigerator side walls, vacuum cleaner shrouds, kitchen appliances |
| **PP** (Polypropylene) | Chemical & moisture resistance, lightweight, flexibility | Dishwasher components, laundry equipment components
| **PS** (Polystyrene) | Rigid, economical, glossy finish | Small appliance casings, cosmetic caps |
| **PC** (Polycarbonate) | Tough, heat & UV stable | Blender containers, microwave parts |
| **PC/ABS Blend** | Marries strength (PC) & processability (ABS) | Power tool casings, high-end appliances |
| **HIPS** (High-Impact Polystyrene) | Low-cost, easy to mold, impact-stabilized | TV back panels, small appliance shells |
 
---
 
### **3. Important Features of Injection Molded Shells**
- **High Precision & Consistency**: Complex geometries with tight tolerances (±0.1mm).
- **Smooth/Textured Surfaces**: Can be glossy, matte, or textured (e.g., soft-touch coatings).
- **Lightweight & Durable**: Resistant to impact, heat, and chemicals.
- **Cost-Effective**: Mass production reduces per-unit cost.
- **Design Flexibility**: Allows for integrated features (snap fits, ribs, hinges).
- **Recyclability**: Many thermoplastics can be recycled (e.g., PP, ABS).
 
---
 
### **4. Applications in Household Appliances**
- **Large Appliances**: Front panels of washing machines, doors of refrigerators.
- **Small Appliances**: Blenders, coffee makers, hair dryers.
- **Electronics**: TV bezels, remote control housings.
 
---
 
### **Conclusion**
Shells made from plastic injection molding are the ideal solution for household appliances due to being **versatile, long-lasting, and cost-effective**. The mold design and materials used significantly affect performance as well as looks.
 
Do you want information about a specific appliance or material?
 
 
If you need injection-molded housing parts, please contact me promptly.
ZIBO HUIWEN PLASTIC 
Whatsapp :008615069372818
 
 
 
Contact Us

Author:

Mr. Kama Liu

Phone/WhatsApp:

+86 15069372818

Popular Products
You may also like
Related Categories

Email to this supplier

Subject:
Email:
Message:

Your message must be betwwen 20-8000 characters

Copyright © 2025 ZIBO HUIWEN NEW MATERIAL CO., LTD All rights reserved. Privacy Policy

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send