SMI Announces 15-Day Short Run Injection Molding Service for Custom Plastic Housings
Rapid prototyping and mass production of Plastic parts now achievable with 2‑week delivery, 50,000 pcs/month capacity, and full overmold capabilities.
SMI Casting Limited, a China‑based injection molding specialist, has released its latest service portfolio for OEM/ODM Plastic housings used in home appliances and industrial equipment. The company reports that it can ship most custom Plastic parts within 15 days from design approval, with a monthly supply capacity of 50,000 units. This short‑run service is designed to bridge the gap between prototyping and full‑scale production, offering manufacturers a predictable, data‑driven alternative to traditional 6‑8 week lead times.
Why Fast Delivery of Plastic Housings Matters for Appliance Makers
Home appliance producers often face delays when sourcing Plastic housings for control panels, power supplies, and internal chassis. Standard injection molding runs require high minimum order quantities and long tooling cycles. SMI’s solution uses a streamlined mold‑making process that reduces first‑article lead time to 2 weeks. According to the company’s production data, over 85% of projects for Plastic parts in the 50‑to‑10,000‑unit range are shipped within 15 working days.
Key delivery parameters:
Standard lead time: 2 weeks (from order confirmation)
Expedited service for urgent Plastic housings : available upon request
Monthly capacity: 50,000 pcs of finished Plastic parts
Minimum order: 50 units for custom injection molding
Technical Deep Dive: Precision Injection Molding for Plastic Cover, Plastic Boxes, and Overmold Plastic
SMI specializes in three high‑demand geometries: Plastic cover components (thin‑wall panels, lids, and enclosures), Plastic boxes (sealed or ventilated housings for electronics), and Overmold plastic assemblies (soft‑touch grips or gaskets molded onto rigid substrates). Each product type is backed by specific process data.
1. Plastic Cover – Optimized for Flatness and Aesthetic Surfaces
For appliance front panels and protective Plastic cover parts, SMI uses a multi‑stage temperature control system that holds warp below 0.2 mm over 200 mm. The company has produced Plastic cover components for over 15 home appliance models, with a typical wall thickness ranging from 1.2 mm to 3.0 mm. Each Plastic cover order includes a free dimensional inspection report.
2. Plastic Boxes – Structural Integrity for Internal Electronics
Dustproof Plastic boxes for power supplies and control boards require tight tolerances on mounting bosses and snap‑fit features. SMI’s injection molding machines (80‑550 ton) achieve ±0.05 mm on critical hole positions for Plastic boxes. The company’s production records show that Plastic boxes made from ABS or PC/ABS pass a 72‑hour heat resistance test at 85°C without deformation.
3. Overmold Plastic – Combining Rigid and Soft Materials
For ergonomic handles and sealing rims, Overmold plastic technology bonds TPE or silicone to a rigid substrate. SMI performs Overmold plastic in a single automated cycle, reducing secondary assembly costs. A typical Overmold plastic run for a handheld appliance handle achieves peel strength of 3.5 N/mm (TPE to ABS). The company has completed Overmold plastic projects for medical devices and power tools, with reject rates below 1.2% in production.
Short Run vs. High Volume: Which Option Fits Your Project?
To help procurement managers decide, SMI provides a clear split based on annual quantity:
| Annual Quantity | Recommended Service | Typical Lead Time | Tooling Cost Efficiency |
|---|---|---|---|
| 50 – 2,000 pcs | Short run (aluminum mold) | 15 days | Highest for Plastic parts with frequent design changes |
| 2,000 – 50,000 pcs | Bridge tooling (hardened steel) | 18‑20 days | Balanced for Plastic housings in mid‑volume production |
| 50,000 – 100,000+ pcs | High‑volume production | 25‑30 days | Lowest per‑unit cost for Plastic boxes and Plastic cover |
All options include support for Overmold plastic inserts. The company maintains 14 injection molding machines with clamping forces from 80 to 550 tons, enabling Plastic parts up to 1,500 g shot weight.
Material and Quality Data: What You Get With Every Order
SMI uses ISO 9001:2025‑certified processes. Each batch of Plastic parts undergoes three in‑process inspections. Key metrics for common Plastic housings grades:
ABS (Grade: LG ABS HI‑121H) – Tensile strength: 45 MPa; suitable for Plastic cover and Plastic boxes
PC/ABS (Bayblend T65) – Impact strength (Izod): 55 kJ/m²; preferred for Plastic housings requiring flame retardancy (UL94 V‑0)
TPE for Overmold plastic – Hardness: 60 Shore A; elongation at break: 450%
The company’s in‑house tool shop produces molds with 5‑axis CNC and EDM machines, ensuring that Plastic parts from the first shot to the 100,000th shot maintain dimensional consistency within ±0.03 mm for critical features.
Why SMI’s Plastic Housings Reduce Your Total Cost of Ownership
Rather than using generic statements, SMI provides verifiable cost drivers:
Tooling reuse – Aluminum molds for short runs can be modified for Plastic parts design changes at 30% of the cost of a new steel mold.
Material optimization – The engineering team reduces Plastic cover thickness from 2.5 mm to 1.8 mm where possible, saving 28% in raw material weight.
Overmold plastic integration – One‑shot Overmold plastic eliminates adhesive application and assembly labor, cutting total cycle time by 18 seconds per part.
A recent case study for a kitchen appliance brand: switching from a general injection molder to SMI for Plastic housings reduced lead time from 45 days to 14 days and lowered the reject rate from 4.5% to 1.1% across Plastic boxes and Plastic cover components.
Global Shipping and Compliance
All Plastic parts and Plastic housings are shipped from SMI’s Shenzhen facility. The company handles export documentation, including RoHS and REACH compliance certificates for Plastic cover, Plastic boxes, and Overmold plastic products. Delivery terms: EXW, FOB Shenzhen, or CIF to major ports worldwide. Air freight for urgent Plastic parts is available with a 3‑day door‑to‑door option.
Contact SMI for a Free Injection Molding Quote
For custom Plastic parts, Plastic housings, Plastic cover designs, Plastic boxes, or Overmold plastic requirements, contact the international injection molding team directly. No minimum order barriers for initial sampling.
SMI Casting Limited
Phone: +86-755-29742490
Email: sales@smicasting.com
