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As a specialized manufacturer based in Shanghai, China, Shanghai Yunshan Plasticizing Co., Ltd. proudly presents our High Chemical Resistant LDPE Pellets 3020D. Engineered specifically for demanding industrial applications, these pellets feature a low Melt Flow Rate (MFR) that delivers exceptional performance in the production of precision injection molded sealing components. We understand the critical need for reliable materials that withstand harsh chemical environments while maintaining dimensional stability and integrity.
Our LDPE 3020D pellets are formulated to meet the rigorous requirements of manufacturers who produce seals, gaskets, and other critical parts exposed to aggressive chemicals. The inherent properties of LDPE, combined with our specialized compounding techniques, result in a material that offers superior resistance without compromising on processability. This makes it an ideal choice for industries where longevity and reliability of sealing parts are non-negotiable.
Shanghai Yunshan Plasticizing leverages years of polymer expertise to ensure consistent quality and performance. Situated in Shanghai, a global manufacturing hub, we maintain stringent quality control protocols from raw material selection to final pellet production. This commitment allows us to deliver a product that meets the exacting standards required for precision injection molding applications worldwide.
Key Technical Specifications & Properties:
Superior Chemical Resistance: Withstands exposure to a wide range of acids, alkalis, and solvents.
Low Melt Flow Rate: Ensures optimal flow characteristics for intricate mold designs and precise part formation.
Excellent Impact Strength: Maintains part integrity under mechanical stress and temperature variations.
Good Flexibility & Tear Resistance: Essential for sealing applications requiring long-term elasticity.
Low Moisture Absorption: Minimizes dimensional changes during and after processing.
High Purity & Consistency: Uniform pellet size and composition ensure stable processing parameters.
Performance Parameters Table:
| Property | Test Method | Value | Unit |
|---|---|---|---|
| Melt Flow Rate (190°C/2.16kg) | ASTM D1238 | 2.0 - 4.0 | g/10min |
| Density | ASTM D792 | 0.920 - 0.925 | g/cm³ |
| Tensile Strength at Yield | ASTM D638 | 10 - 12 | MPa |
| Elongation at Break | ASTM D638 | >500 | % |
| Hardness (Shore D) | ASTM D2240 | 45 - 50 | - |
| Melting Point | ASTM D3418 | 105 - 115 | °C |
The low MFR of our 3020D pellets is particularly advantageous for precision injection molding. It facilitates:
Reduced flash formation during molding
Better dimensional control for complex geometries
Enhanced weld line strength in multi-gated molds
Improved surface finish on final parts
Lower stress cracking in finished sealing components
Benefits for Your Production:
Extended Part Lifespan: Seals and gaskets maintain integrity longer in corrosive environments.
Reduced Downtime: Consistent processing characteristics minimize machine adjustments.
Lower Rejection Rates: High material uniformity ensures part-to-part consistency.
Wider Chemical Compatibility: Suitable for applications involving fuels, cleaning agents, and industrial chemicals.
Cost Efficiency: Optimized flow properties reduce material waste during molding cycles.
Frequently Asked Questions (FAQs):
Q: What types of sealing parts is LDPE 3020D suitable for?
A: Ideal for creating flange gaskets, O-rings, valve seals, chemical tank liners, and pump diaphragms requiring chemical resistance.Q: How does the low MFR benefit thin-walled sealing components?
A: The lower flow rate prevents material jetting, reduces internal stresses, and improves filling consistency in delicate sections.Q: What chemical families is this grade resistant to?
A: Demonstrates good resistance to alcohols, bases, many acids (except strong oxidizing acids), and aliphatic hydrocarbons.Q: Is this material suitable for potable water applications?
A: While LDPE generally has good hygiene properties, specific certifications would be required for drinking water contact applications.Q: What injection molding parameters are recommended?
A: Melt temperature range: 180-220°C; Mold temperature: 10-40°C; Back pressure: 5-15 bar. Specific settings may vary by machine and part design.Q: How is moisture management handled before processing?
A: Although LDPE has low moisture absorption, we recommend drying at 60-70°C for 2 hours if storage conditions have been humid.Q: Can color concentrates be added to this base resin?
A: Yes, the natural translucent base readily accepts standard polyolefin colorants. Compatibility testing is recommended for specific pigment systems.Q: What packaging options are available?
A: Standard 25kg multi-wall paper bags with polyethylene liner. Palletized options (40 bags/pallet) are available upon request.
Leveraging our strategic location in Shanghai, a global manufacturing center, Shanghai Yunshan Plasticizing Co., Ltd. maintains rigorous quality systems throughout our production process. Our technical team provides comprehensive support, from material selection guidance to troubleshooting processing challenges. The 3020D grade undergoes batch testing to ensure consistent chemical resistance properties and melt flow stability – critical factors for precision sealing components.
For manufacturers seeking reliable sealing solutions for harsh chemical environments, our High Chemical Resistant LDPE Pellets 3020D offer a balanced combination of processability and end-use performance. The controlled low MFR provides molders with the processing window needed for complex seal geometries while delivering the long-term chemical resistance required in demanding applications. This synergy of properties makes it a practical choice for upgrading sealing system performance.
Contact Shanghai Yunshan Plasticizing today to discuss how our specialized LDPE 3020D pellets can enhance your sealing part production. Our technical representatives are ready to provide material samples, processing guidelines, and application-specific recommendations tailored to your manufacturing requirements.
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