HMEL PP Polysure M12RR

Polysure M12RR is a premium Polypropylene Homopolymer manufactured by HPCL-Mittal Energy Ltd (HMEL) using advanced Novolen Gas Phase technology. Engineered for general purpose injection molding, M12RR delivers exceptional processability, low cycle times, and outstanding product aesthetics. Produced at HMEL’s Bathinda refinery complex, M12RR is the trusted choice for furniture manufacturers, housewares converters, food packaging producers, and toy makers across North India. The grade combines a balanced 12 MFI with 1450 MPa flexural modulus for optimal stiffness-to-flow ratio, enabling fast, defect-free molding. Full compliance with IS 10910 and FDA 21 CFR 177.1520 makes M12RR ideal for food contact applications including rigid containers, caps, and closures.

Technical Insights & Specifications

• Melt Flow Index (ASTM D1238, 230°C/2.16 kg): 12 g/10 min, providing balanced melt flow suitable for controlled extrusion and molding processes requiring higher melt strength.
• Tensile Strength at Yield (ASTM D638): 35 MPa, ensuring strong mechanical performance and reliable structural stability in finished components.
• Tensile Elongation at Yield (ASTM D638): 10%, offering a balance between rigidity and flexibility during processing and end-use.
• Flexural Modulus – 1% Secant (ASTM D790A): 1450 MPa, indicating high stiffness and good dimensional stability in molded or extruded products.
• Notched Izod Impact Strength at 23°C (ASTM D256): 30 J/m, providing good resistance to sudden impact under standard conditions.
• Vicat Softening Temperature (ASTM D1525, 10N): 153°C, demonstrating strong thermal resistance for applications exposed to elevated temperatures.
• Heat Deflection Temperature (ASTM D648, 0.455 MPa): 95°C, enabling the material to maintain structural integrity and shape under moderate thermal loads.

Processing Guidelines

Barrel: 180–280°C (progressive)
Mold: 30–40°C
Injection Speed: Medium to High
Back Pressure: 5–15 bar
Screw Speed: 40–70 rpm
Cooling Time: 15–30 seconds (part-dependent)

Regulatory Compliance

IS 10910, IS 10909, FDA 21 CFR 177.1520

Technical Strength

M12RR’s Novolen Gas Phase formulation delivers a narrow molecular weight distribution, enabling consistent melt flow and minimal warpage across production runs. The 1450 MPa flexural modulus provides superior stiffness for structural applications while the 12 MFI ensures rapid mold filling and short cycle times (15–30 seconds). The 153°C Vicat softening point and 95°C heat deflection temperature enable processing at elevated barrel temperatures without degradation, supporting high-volume production. Low gel count and excellent color retention ensure superior product aesthetics—critical for consumer-facing furniture and housewares applications.

Applications & Industry Use Cases

Furniture & Outdoor Applications

M12RR is widely used for monobloc hairs, cafeteria tables, garden furniture, and indoor seating components. The grade’s low warpage and dimensional stability ensure consistent fit and assembly across high-volume production runs. With optional UV stabilizer packages, M12RR delivers excellent outdoor durability and color retention for extended exposure to sunlight and weather. The 95°C heat deflection temperature provides reliable performance in hot climates, making it ideal for tropical and subtropical markets across India.

Food & Beverage Packaging

M12RR is the preferred choice for rigid food containers, butter boxes, dairy packaging, and dry food storage bins. Full IS 10910 and FDA 21 CFR 177.1520 compliance ensures safety for direct food contact. The grade’s excellent barrier properties and low extractables make it suitable for milk, juice, and beverage containers. Superior adhesion to labels and printing inks enables high-quality graphics for retail shelf appeal.

Caps, Closures & Beverage Accessories

The grade’s fast cooling capability (15–20 second cycles) makes M12RR ideal for high-speed cap and closure production. 28mm and 38mm PCO (Preform Closure Outline) caps, mineral water closures, and flip-top caps benefit from M12RR’s low warpage and dimensional precision. The 1450 MPa stiffness ensures reliable sealing and tamper-evidence integrity.

Housewares & Consumer Products

Kitchen and bathroom applications including mixing bowls, colanders, utensil holders, drawer organizers, and storage caddies leverage M12RR’s excellent aesthetics and dimensional stability. The low warpage ensures tight-fitting components for drawer inserts and modular storage systems. High gloss and color retention make products visually appealing for retail consumers.

Toys & Educational Products

M12RR is FDA-compliant for child safety standards, making it suitable for building blocks, snap-fit assembly toys, dolls, figurines, and educational toys. The grade’s excellent flow enables detailed feature molding while maintaining structural integrity for snap-fit assemblies and moving parts.

Industrial Compounding

M12RR serves as a clean, stable carrier resin for masterbatch and additive concentrates. The grade’s low gel count and consistent melt flow ensure excellent dispersion of colorants, UV stabilizers, and flame retardants. Talc-filled compounds (20–40% talc) are widely used for automotive under-hood components, providing enhanced stiffness and heat resistance.

Alternatives & Comparative Overview

Several polypropylene grades provide performance comparable to M12RR, particularly for general-purpose injection molding and precision components. Key alternatives include:

• M12RR1 – MFI 12, produced using Spheripol-II Controlled Rheology (CR) technology with a flexural modulus of ~1550 MPa. Used in general-purpose injection molding and precision applications. Compared to M12RR, it offers about 7% higher stiffness and reduced warpage.
• MH13 – MFI 13.5, manufactured using Ineos gas-phase technology, with a flexural modulus around ~1500 MPa. Commonly applied in household goods and packaging products. It provides slightly higher flow while maintaining similar application suitability.
• 1200MG – MFI 20, produced with IOCL Spheripol-II technology, featuring a flexural modulus near ~1600 MPa. Designed for thin-wall injection molding (TWIM) and houseware products, where higher MFI enables faster molding cycles.
• MI12NX – MFI 12, manufactured using OPaL Ineos technology, with a flexural modulus around ~1400 MPa. Used in appliances and furniture components. As an impact copolymer, it offers high impact strength (around 120 J/m) and anti-static properties.
• 3120MA – MFI 12, produced via IOCL Spheripol-II technology, with a flexural modulus of ~1450 MPa. Suitable for automotive and furniture applications. This grade is also an impact copolymer with anti-static characteristics.

These alternatives help manufacturers evaluate options based on stiffness, melt flow behavior, impact performance, and application requirements, enabling efficient material selection for injection molding and industrial components.

M12RR Competitive Advantages

M12RR’s Novolen Gas Phase technology delivers solvent-free production with consistent quality, narrow molecular weight distribution, and excellent batch-to-batch stability. The 1450 MPa flexural modulus provides superior stiffness for structural applications while maintaining low warpage for precision molding. Compared to M12RR1 (Spheripol-II), M12RR offers cost-effectiveness for general purpose applications; M12RR1 is preferred for tight-tolerance, low-warpage precision parts. Versus impact copolymers (MI12NX, 3120MA), M12RR’s homopolymer stiffness excels in load-bearing furniture and structural components. For faster cycles, 1200MG (20 MFI) is available; for lower flow and better impact, impact copolymer variants are recommended.