PCR HDPE vs PCR rPP: Key Differences, Properties & Applications | Swanpoly
PCR HDPE and PCR rPP are the two most widely used post-consumer recycled polyolefin resins in the global plastic manufacturing industry.
As core sustainable alternatives to virgin plastics, both materials feature eco-friendly attributes, stable reprocessing performance, and full compliance with international circular economy standards.
However, due to different material characteristics, structural properties and processing advantages, PCR HDPE and PCR rPP are suitable for completely different production scenarios.
Understanding their differences helps manufacturers select the optimal PCR resin to improve product quality and control costs.
1. Raw Material Source & Basic Features
PCR HDPE (rHDPE) is recycled from post-consumer high-density polyethylene products, mainly including milk bottles, beverage containers, cosmetic bottles, and daily rigid packaging. It is divided into natural white and milky white grades, with outstanding rigidity, impact resistance, and low-temperature tolerance. The material boasts low ash content and stable density, making it the preferred material for blow molding products.
PCR rPP (rPP) is derived from waste polypropylene products such as plastic caps, food boxes, non-woven fabrics, and automotive plastic parts. It features excellent high-temperature resistance, chemical stability, and lightweight performance.
Compared with rHDPE, PCR rPP has higher hardness and better fluidity during injection molding, adapting to high-efficiency mass production of precision plastic parts.
2. Full Parameter & Application Comparison Table
Specification & Usage | PCR HDPE (rHDPE) | PCR rPP (rPP) |
|---|---|---|
Main Raw Source | Milk bottles, beverage bottles, cosmetic HDPE containers | Plastic caps, food boxes, non-woven fabrics, auto PP parts |
Density | 0.950–0.955 g/cm³ | 0.900–0.910 g/cm³ (lighter weight) |
MFI Range | 0.3–3.5 g/10min (stable for blow molding) | 2.0–25 g/10min (high fluidity for injection) |
Temperature Resistance | Normal temperature, not heat sterilizable | 100–120°C high-temperature resistance, sterilization available |
Toughness & Hardness | High toughness, excellent low-temperature crack resistance | Higher rigidity & hardness, slightly lower flexibility |
Best Processing Method | Blow molding, extrusion, sheet & pipe production | Injection molding, high-speed extrusion, precision parts |
Surface Feature | Natural white / milky white, high smoothness, high appearance grade | Stable matte texture, suitable for structural parts |
Core Applications | Food bottles, cosmetic packaging, daily containers, pipes, sheets | Bottle caps, food containers, auto interiors, home appliances, non-woven fabrics |
Certification Grade | GRS certified + FDA food-contact compliant | GRS certified + FDA food-contact compliant |
This detailed parameter table allows global buyers and manufacturers to quickly distinguish the material advantages of PCR HDPE and PCR rPP, select matched recycled resin according to production processes, product appearance requirements, and usage scenarios, avoiding material mismatch and production loss.
3. Certification & Quality Guarantee from Swanpoly
As a professional China PCR polymer manufacturer, Swanpoly provides high-purity PCR HDPE and PCR rPP in flakes, pellets and granules. All products are GRS certified and FDA food-contact compliant, with complete TDS, COA and TC documents.
We strictly grade natural white/milky white rHDPE and multi-specification rPP materials to ensure stable batch performance, low impurities, and consistent MFI values.
PCR HDPE for blow molding, low-temperature resistant and high-appearance packaging products but PCR rPP for high-temperature resistant, high-hardness injection molding and industrial parts.
Swanpoly provides customized recycled resin solutions and stable bulk supply for global manufacturers, helping enterprises achieve ESG goals and green production upgrading.
