PP-SABIC PP 570P
PP-SABIC PP 570P is a specially developed homopolymer polypropylene engineered by SABIC for rigid general-purpose injection molded articles requiring consistent processability, good mechanicals, and high gloss. With a stable melt flow rate of 8 g/10 min and high flexural modulus (1630 MPa), it is highly specified for durable housewares, caps, closures, and toys. At Jucheng Precision, an ISO 9001 and IATF 16949 certified manufacturer, we leverage our 35+ advanced molding presses (50-650T) and in-house 5-axis CNC tooling to control its 1.2% to 2.5% shrinkage rate. We provide free DFM analysis within 24 hours to optimize thermal balance, delivering flawless, high-gloss parts verified by Zeiss CMM inspection.
SABIC PP 570P Structural and Rigid Processing Profile
SABIC® PP 570P is a highly reliable homopolymer resin designed to deliver high rigidity and aesthetic gloss for domestic and consumer articles:
| Material Attribute | SABIC 570P Specification | Engineering Advantage for Molded Parts |
|---|---|---|
| Stiffness-to-Weight | Flexural Modulus 1630 MPa | Provides superior load-bearing strength and rigidity at a low density of 0.905 g/cm³, allowing for lightweighting of thick-walled containers. |
| Cosmetic Gloss | Inherent High-Gloss Homopolymer | Ensures a premium, brilliant surface gloss directly from polished tool cavities, reducing the need for post-molding finishing or painting. |
| Food Safety | FDA Food Contact Compliant | Fully certified for safe and non-toxic direct contact with food and household consumables, ensuring zero taste or odor transfer. |
Molding Configuration Adaptability for SABIC PP 570P
With a Melt Flow Rate of 8 g/10 min, SABIC PP 570P flows smoothly and packs tightly under standard molding setups:
| Process Category | Suitability & Practical Application |
|---|---|
| Standard Rigid Molding | Excellent. Highly optimized for thick-walled housewares, storage boxes, furniture structural parts, and heavy-duty kitchen containers. |
| Cap & Closure Molding | High. Its robust stiffness and low shrinkage anisotropy support the fabrication of rigid caps, closures, and threaded bottle covers. |
| Insert Molding | Good. Allows integration of metallic brackets or structural pins directly inside rigid houseware structures. |
PP-SABIC PP 570P Tooling & Injection Processing Guide
To prevent warpage and optimize the high-gloss surface of SABIC PP 570P, Jucheng’s engineering team implements precise process profiling:
- Optimizing Surface Gloss (High Mirror Polishing): To fully exploit PP 570P’s high-gloss potential, Jucheng’s tooling division uses hardened tool steel (such as S136) polished to a high mirror finish. We maintain high mold temperatures (up to 40°C–65°C) for visual parts, ensuring the molten resin replicates the mold surface perfectly.
- Warpage Control & Shrinkage: This grade exhibits a mold shrinkage of 1.2% to 2.5% depending on wall thickness. Our engineers implement highly uniform wall thicknesses during DFM review and use our 5-axis CNCs to machine balanced cooling channels to prevent uneven cooling and thermal warping.
- Processing Temperatures: Barrel temperatures are tightly kept between 200°C and 250°C (392°F to 482°F). Adequate pack pressure and slow injection speeds are applied to prevent sink marks on structural rib joints.
- Pre-Drying: While not strictly necessary due to PP’s hydrophobic nature, we pre-dry at 80°C (176°F) for 1–2 hours if the raw material is exposed to humid storage, preventing surface splay.
Key Application Fields for PP-SABIC PP 570P
- Rigid Housewares: Heavy-duty storage organizers, high-gloss kitchenware, plastic buckets, cups, and food-safe plates.
- Packaging Closures: Rigid threaded caps, flip-top lids, pharmaceutical closures, and general consumer container lids.
- Toys & Furniture Accessories: Structurally rigid toy assemblies, high-gloss children’s furniture components, and high-impact plastic drawers.
Properties
| Density | 0.905 g/cm³ |
| Melt Mass-Flow Rate (MFR) (230°C/2.16kg) | 8.0 g/10 min |
| Tensile Strength at Yield | 32 MPa |
| Tensile Elongation at Yield | 11 % |
| Flexural Modulus (1% Secant) | 1,630 MPa |
| Notched Izod Impact Strength (23°C) | 35 J/m |
| Rockwell Hardness (R-Scale) | 102 - |
| Vicat Softening Point | 155 °C |
| Heat Deflection Temperature (HDT @ 455 kPa) | 100 °C |
| Linear Mold Shrinkage | 1.2 - 2.5 % |
| Maximum Part Size | 1000 x 800 mm |
| Minimum Part Size | 1 x 1 mm |