High Flow Thin-Wall Injection Molding Grade | Daqing Refining HP500P Homopolymer PP
Product Overview
Daqing Refining HP500P is a medium-high flow homopolymer PP manufactured via Spherizone gas-phase polymerization. It features uniform molecular structure, ultra-low impurities and zero black specks. With a steady MFR of 17, the resin delivers outstanding melt fluidity for high-speed thin-wall injection molding, producing rigid, glossy finished parts with minimal warpage. Conforming to China’s GB 4806 food contact standards, it is widely used for lightweight daily plastic goods, bottle caps, electrical appliance components and masterbatch base materials. Consistent batch quality and favorable cost performance make it a dependable raw material for injection molding factories.
Basic Product Specifications
All listed figures are typical values for reference only. The product adopts 100% virgin milky white pellets, free of black specks, foreign impurities and crystal spots to guarantee stable performance across batches. Packed in original 25kg woven bags, each batch comes with an official COA to realize full-process quality traceability.
Melt Flow Rate (230°C/2.16 kg): 17 g/10min (GB/T 3682, typical value)
Isotactic Index: ≥96.7%
Ash Content: ≤0.015%
Tensile Yield Strength: ≥35 MPa (GB/T 1040.2)
Flexural Modulus: 1200 MPa (GB/T 9341)
Heat Deflection Temperature (HDT): ≥110°C
Performance Note: Even molecular distribution and balanced fluidity allow full cavity filling for thin-wall molds. Molded products feature high hardness and excellent scratch resistance.
Core Product Advantages
Medium-high fluidity for high-speed thin-wall injection molding
Boasting an MFR of 17 and uniform molecular distribution, this grade has a wide processing window. It fully fills thin-walled small components, shortens molding cycle time and boosts machine output and finished product yield.
High rigidity & hardness, scratch resistant with low warpage
This homopolymer base delivers exceptional rigidity and high surface gloss after molding. It effectively reduces product warpage and sink marks with reliable dimensional stability.
Ultra-clean pellets to reduce die blockage risks
Strict appearance control eliminates black specks, paired with low ash and gel content. It avoids frequent die clogging during long continuous production and cuts downtime for mold cleaning.
Compatible with Modification & Food-contact Safe
The pure base resin can be filled with talc powder or calcium carbonate as masterbatch carriers. Its low-odor formula complies with requirements for food containers and tableware.
Main Application Fields
Daily Injection Goods: Plastic bottle caps, storage boxes, thin-wall food containers, plastic basins, small toy partsSmall Home Appliance Parts: Miniature equipment housings, internal structural components, fan guards, decorative covers
Modified Filling Substrates: Talc/Calcium Carbonate Filled Modified PP, general filler masterbatch carriers
Light Industrial Components: Small plastic protective shields, turnover accessories, plastic fasteners
Processing & Storage Guidelines
Processing Parameters
Injection Molding Process
Barrel Temperature: 200–230°C
Nozzle Temperature: 210–240°C
Mold Temperature: 40–70°C
Product Wall Thickness: 0.8–5 mm
Storage Requirements
Store pellets in cool, dry and well-ventilated warehouses. Keep away from direct sunlight, open flames and odorous goods to avoid moisture absorption and odor cross-contamination. Pallet stacking height shall not exceed 5 layers. The shelf life is 2 years under standard storage conditions.
Quality Assurance & Supply Service
All supplied materials are 100% genuine virgin Daqing Refining HP500P PP. Original batch COA and food contact compliance certificates are provided for each shipment. We maintain sufficient domestic spot inventory all year round, supporting free sample testing, small trial orders and full-truck / full-container bulk deliveries. Our technical team offers professional injection molding parameter tuning support to resolve common defects including short shots, warpage and surface scratches, meeting diverse production and procurement demands of molding manufacturers.
Frequently Asked Questions
Q1: How does HP500P differ from low-MFR injection PP grades?A: With an MFR of 17, HP500P delivers higher fluidity, enabling shorter molding cycles and complete filling of thin-wall parts. It also provides superior rigidity and surface hardness compared with low-MFR injection PP, making it ideal for bottle caps and thin daily plastic products.
Q2: Can this material be used for food packaging and tableware?A: Yes. This low-odor, low-ash homopolymer complies with China GB 4806 food contact standards. Batch compliance documents are available for manufacturing food containers, tableware and bottle caps.
Q3: How to resolve short shots and incomplete filling of thin-wall products?A: Appropriately raise barrel temperature, mold temperature, injection pressure and injection speed. Fully dry damp pellets to improve melt fluidity and eliminate incomplete filling issues.
Q4: Can it be blended or filled with other PP materials? What blending ratio is recommended?A: Pure HP500P delivers the best molding performance and surface quality. For modification needs, mix with 20%–40% talc or calcium carbonate to balance cost, rigidity and processability.
Q5: What delivery cycle and technical support can you provide?A: Stable spot stock is supplied directly from Daqing Refining. We provide professional injection molding parameter guidance and full-process technical solutions for typical molding defects.
Product Summary
Daqing Refining HP500P is a medium-high flow homopolymer PP with an MFR of 17, designed for high-speed thin-wall injection molding. It combines high rigidity, glossy surface finish and ultra-high purity, while complying with GB 4806 food contact standards. Widely applied to daily plastic products, electrical components and PP modification materials, it is a cost-effective raw material choice for injection molding manufacturers with stable domestic supply support.
Contact us for complete technical datasheets, compliance certificates, original COA reports, free samples and real-time quotations. We provide dedicated molding technical guidance and reliable long-term PP supply.
