HMEL PP Polysure M65NR

HMEL Polysure M65NR is a next-generation nucleated polypropylene homopolymer engineered for ultra-high flow requirements in compounding, masterbatch production, and multi-cavity thin wall injection molding (TWIM). Produced using Spheripol-II technology, M65NR offers an exceptional melt flow index (65 g/10 min) paired with high stiffness (1350 MPa flexural modulus) and rapid cooling for industry-leading productivity in 256+ cavity molds. Its narrow molecular weight distribution ensures consistent processing, reduced warpage, and excellent part aesthetics, making it the preferred choice for high-volume manufacturing in Delhi NCR and Across India
HMEL, a JV between HPCL and Mittal Energy, maintains ISO-certified production and full regulatory compliance (IS 10910, IS 16738, FDA CFR 177.1520), delivering reliable, food-safe resins to India’s leading converters and compounders.

M65NR Technical Specifications – ASTM Properties & Processing Insights

M65NR achieves a 65 MFI (ASTM D1238), enabling ultra-high melt flow for rapid fill in 256+ cavity molds and compounding extruders. Flexural modulus of 1350 MPa (ASTM D790A) delivers robust stiffness for thin-wall containers and housewares. Tensile strength at yield is 32 MPa, with 10% elongation at yield (ASTM D638), balancing strength and flexibility for demanding applications. Notched Izod impact strength is 25 J/m (ASTM D256A), ensuring toughness for handling and transport.
Vicat softening point stands at 150°C and HDT at 100°C, supporting hot-fill and post-molding thermal processes. The nucleated structure, achieved via Spheripol-II, accelerates cooling, reduces cycle times, and enhances dimensional accuracy versus non-nucleated grades.

Processing Parameters

Barrel temperature 180–230°C, mold 30–40°C. High injection speed and moderate back pressure (40–80 bar) are recommended to maximize nucleation benefits and minimize shear degradation.

Applications

Compounding & Masterbatch Base Resin

M65NR is the benchmark base resin for color masterbatch and additive compounding. Its 65 MFI delivers rapid pigment and additive dispersion, minimizing residence time and thermal stress in twin-screw extruders. Compounders benefit from the nucleated structure, which remains stable during blending and downstream molding, ensuring consistent performance in TWIM and consumer applications.

Multi-Cavity TWIM (256+ Cavities)

For ultra-thin wall (0.3–0.6 mm) yogurt cups, dairy containers, and food service trays, M65NR’s ultra-high flow enables complete fill in 2–4 seconds, with cycle times as low as 3–6 seconds. In 256-cavity molds, manufacturers achieve record throughput, reduced scrap, and uniform part quality. The nucleated structure delivers rapid cooling, minimal warpage, and superior surface finish, supporting high-speed, high-volume production for Delhi NCR’s leading packaging hubs.

Housewares & Consumer Products

M65NR is ideal for kitchen storage, appliances, and high-volume consumer goods requiring thin walls and high stiffness. The 1350 MPa modulus ensures durability without brittleness, while the nucleated structure supports flawless aesthetics and dimensional stability. Manufacturers in Noida, Gurgaon, and Manesar rely on M65NR for consistent, scalable production of everyday essentials.

Comparative Analysis & Grade Selection
M65NR vs M50NR1 vs CM65NR

 M65NR (65 MFI) – Ultra-High Flow, Maximum Productivity

M65NR is engineered for absolute throughput in extreme-cavity molds (256+), where cycle time and pigment/additive dispersion are critical. The 65 MFI enables the fastest fill and cooling rates, making it unmatched for high-speed TWIM and masterbatch compounding. Flexural modulus is slightly lower than M50NR1 but remains ideal for ultra-thin wall and consumer applications.

M50NR1 (50 MFI) – Balanced Flow and Stiffness

M50NR1 offers a lower MFI (50), delivering higher stiffness (1500 MPa) and is preferred for applications where wall thickness is moderate (0.5–0.8 mm) and part rigidity is a priority. It is the go-to for 128-cavity molds and stackable containers.

CM65NR – Impact Copolymer Alternative

CM65NR is an impact copolymer grade (also 65 MFI) designed for applications needing enhanced impact strength, such as automotive components and industrial packaging. While flow is similar, CM65NR provides extra toughness at the expense of some stiffness and clarity, making it suitable for heavy-duty or outdoor products.

Selection Guide: Choose M65NR for ultra-high flow, maximum-cavity TWIM and masterbatch compounding; M50NR1 for higher stiffness and moderate cavities; CM65NR for impact-critical applications.

256-Cavity TWIM Process Guide (M65NR Optimized)

For 256-cavity molds, set injection pressure to 1300–1700 bar and holding pressure to 700–1000 bar. Cooling times drop to 3–6 seconds thanks to nucleation, with ejection at 90–100°C. Mold temperatures of 30–40°C are optimal for rapid part release and minimal warpage. Energy savings of 15–25% are typical due to reduced cycle times and lower chiller loads.

Please note: M65NR has been superseded by M70NR1 – superior alternative with improved performance metrics and cost efficiency. Explore full specifications, applications, and advantages to see how it delivers better value for your manufacturing needs.