Custom HDPE Molding Product
If HDPE is the right material for your application, simply send us your drawings or samples. We'll provide a detailed quote and deliver injection molded HDPE parts to your exact specifications.
Custom High-Density Polyethylene Molding Solution
Zhongren specializes in custom HDPE molding services for applications requiring toughness, lightweight performance, and chemical resistance. Our experience in high-density polyethylene injection molding allows us to deliver consistent, high-quality parts with excellent impact strength and dimensional stability. HDPE molding is ideal for demanding applications in automotive, industrial, packaging, and fluid handling systems, where durability and cost-efficiency are essential.
How Are HDPE Parts Manufactured?
We provide full-service HDPE injection molding, using optimized tooling and processing methods to address HDPE’s high shrinkage and flexibility.
- HDPE Injection Molding
- HDPE 3D Printing
- HDPE Extrusion Molding
- HDPE CNC Machining
Due to its semi-crystalline nature, injection molding HDPE requires controlled cooling and mold design optimization to prevent warpage and sink marks.
Common Applications of HDPE Molding
Thanks to its toughness, chemical resistance, and low water absorption, HDPE molding is ideal for:
- Industrial tanks and fluid containers
- Automotive ducting and under-hood components
- Chemical-resistant enclosures
- Food and beverage packaging
- Medical trays and containers
- Cable insulation and electrical covers
Our Valued-Added Services
- Design and Engineering Support
- Material Testing and Certification
- Surface Finishing and Printing
- Assembly and Sub-Assembly
- Custom Packaging and Labeling
Advantages of HDPE Molding
- Excellent chemical and corrosion resistance
- High impact strength even at low temperatures
- Lightweight and cost-effective
- Low moisture absorption
- FDA-compliant and recyclable grades available
Disadvantages of HDPE Molding
- High shrinkage and low dimensional precision
- Poor bonding with adhesives and overmolded materials
- Limited stiffness and low surface hardness
- Not suitable for tight-tolerance or highly cosmetic parts
FAQ of HDPE Injection Molding
What are the challenges in injection molding HDPE?
HDPE injection molding presents challenges like high shrinkage and limited dimensional control. Proper mold design, gating, and cooling are essential to minimize warpage and flash.
Can HDPE be overmolded or used in insert molding?
Yes, but with limitations. Due to HDPE’s low surface energy, HDPE overmolding or insert molding with HDPE requires special surface treatment or mechanical interlocks to ensure proper adhesion.
Is food-safe or medical-grade HDPE available?
Yes. We offer certified high-density polyethylene molding materials that comply with FDA and other regulatory standards for food contact and medical packaging.
How does HDPE compare to LDPE or PP?
Compared to LDPE, HDPE molding provides higher rigidity and better temperature performance. Compared to PP, HDPE has better impact strength and chemical resistance but lower stiffness.
What's the typical lead time for custom HDPE injection molding?
Tooling lead time is 2–4 weeks. Production can begin immediately after validation, with cycle times optimized for injection molding HDPE’s fast flow characteristics.
