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Help CenterMedium Flow General‑Purpose HDPE 5021D SHELL for Daily‑Use Injection Parts
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As a specialized manufacturer, Shanghai Wenqin Plastics Co., Ltd. is dedicated to providing high-performance polymer solutions for the global injection molding industry. Our Medium Flow General-Purpose HDPE 5021D is engineered to meet the rigorous demands of producing durable, cost-effective daily-use injection parts. With a commitment to quality underscored by our ISO 9001 certification among others, we offer a reliable material that balances excellent processability with consistent end-product performance, helping manufacturers streamline production and enhance their product offerings.
This HDPE 5021D grade is specifically formulated for injection molding applications, characterized by its medium melt flow rate which provides an optimal balance between flowability and mechanical strength during processing. It is an ideal choice for a wide range of consumer and industrial items.
- Superior Processability: The medium flow rate ensures easy filling of complex molds, reducing cycle times and improving production efficiency. It offers stable melting behavior for consistent shot-to-shot performance.
- Excellent Mechanical Properties: Provides a good combination of stiffness and impact resistance, making finished parts durable enough for everyday use while maintaining dimensional stability.
- High Chemical Resistance: Inherits HDPE's inherent resistance to many acids, alkalis, and solvents, ensuring longevity for containers and parts exposed to various household chemicals.
- Good Environmental Stress Crack Resistance (ESCR): Suitable for applications where the part may be under load or exposed to aggressive environments, enhancing product reliability.
- Food Contact Potential: While specific certifications should be verified per application and region, general-purpose HDPE grades like 5021D are commonly used in non-food and potential food-contact applications, subject to compliance with local regulations (e.g., FDA, EU).
- Cost-Effectiveness: As a general-purpose material, it offers an outstanding price-to-performance ratio, helping manufacturers control material costs without compromising on quality for standard applications.
Below is a summary of typical technical specifications for our Medium Flow HDPE 5021D:
| Property | Typical Value | Test Method |
|---|---|---|
| Melt Flow Rate (190°C / 2.16 kg) | ~ 6-10 g/10 min | ASTM D1238 |
| Density | ~ 0.952 - 0.955 g/cm³ | ASTM D792 |
| Tensile Yield Strength | > 22 MPa | ASTM D638 |
| Flexural Modulus | > 1100 MPa | ASTM D790 |
| Izod Impact Strength (Notched, 23°C) | > 30 J/m | ASTM D256 |
| Hardness (Shore D) | > 60 | ASTM D2240 |
| Recommended Melt Temperature | 200 - 240 °C | - |
| Recommended Mold Temperature | 20 - 60 °C | - |
Advantages for Your Business:
- Enhanced Production Efficiency: Reliable flow characteristics minimize defects like short shots and weld lines, leading to higher yield rates.
- Versatile Application Range: Suitable for manufacturing a broad spectrum of parts, from household containers and closures to industrial components and toys.
- Consistent Quality Supply: Our production is backed by a robust quality management system (ISO 9001), ensuring batch-to-batch consistency you can depend on.
- Global Logistics Support: With major shipment ports in Shanghai and Ningbo, we facilitate smooth export to our main markets across North America, South America, Europe, Asia, Africa, and Oceania.
Shanghai Wenqin Plastics, established in 2020, has rapidly grown by adhering to stringent quality standards. Our certifications, including ISO 9001 and ISO 14000, reflect our dedication to systematic management and environmental responsibility. Serving a diverse global clientele across multiple continents, we understand the nuanced needs of different markets. Choosing our HDPE 5021D means partnering with a supplier committed to reliability, technical support, and delivering materials that help your injection molding operations run smoother and more profitably. We encourage you to contact us for specific technical data sheets, samples, or to discuss how this grade can be optimized for your particular daily-use part application.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between "Medium Flow" and "High Flow" HDPE grades?
A1: The primary difference lies in the Melt Flow Rate (MFR). Medium flow grades (like 5021D) offer a balance between ease of processing and mechanical properties, suitable for parts requiring good strength. High flow grades fill molds faster and are used for thin-walled or complex parts but may have slightly reduced impact resistance.
Q2: Is HDPE 5021D suitable for food packaging applications?
A2: HDPE 5021D is a general-purpose grade. Its suitability for direct food contact depends on it meeting specific regional food safety regulations (e.g., FDA in the USA, EFSA in the EU). We recommend consulting the relevant compliance certificates for your target market, which can be provided upon request.
Q3: Can this material be used for outdoor applications?
A3: HDPE has inherent UV resistance, but for prolonged outdoor use, additives (like UV stabilizers) are often required. The standard 5021D grade can be used outdoors for limited periods, but for long-term exposure, we can discuss stabilized compound options.
Q4: What are the typical injection molding machine settings for this grade?
A4: Recommended processing temperatures are typically in the range of 200-240°C for the melt, with mold temperatures between 20-60°C. Optimal settings depend on part design, mold geometry, and machine type, and should be fine-tuned during trial runs.
Q5: Does Shanghai Wenqin Plastics provide technical support for material processing?
A5: Yes, we offer basic technical guidance on processing parameters for our materials. For complex applications, we can work closely with your engineering team to recommend best practices for using our HDPE 5021D.
Q6: What is the standard packaging and lead time for an order?
A6: The material is typically supplied in 25 kg polywoven bags on pallets. Lead times vary based on order quantity and production schedule, but we strive for efficient delivery, supported by our strategic location near major ports.
Q7: Can custom colors or additives be incorporated into this HDPE grade?
A7: Absolutely. We offer customization services, including masterbatch coloring and the incorporation of specific additives (e.g., antistatic, slip agents) to meet your product's functional or aesthetic requirements.
Q8: How does the cost of HDPE 5021D compare to other plastics like PP or LDPE?
A8: HDPE generally offers a favorable balance of properties at a competitive cost. It is often stiffer and has better moisture barrier properties than PP, and is tougher and more rigid than LDPE, making it a cost-effective choice for many rigid daily-use parts.
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