HMEL PPCP Polysure CM03RR

Polysure CM03RR is HMEL’s Spheripol-II based polypropylene impact copolymer (PPCP) designed for general-purpose injection moulding. With a medium MFI of 3.5, CM03RR delivers an outstanding stiffness–impact balance, making it the go-to grade for automotive components, furniture, crates, industrial mouldings, and rigid packaging. Spheripol-II technology ensures uniform impact-phase dispersion and consistent mechanicals batch after batch, supporting dimensional stability and robust part performance for demanding structural applications.

Technical specifications of HMEL Polysure CM03RR

Flow & physical properties

• Melt Flow Index:5 g/10 min (230°C/2.16 kg) – tuned for general-purpose injection moulding
• Density: ~0.90 g/cm³ – standard for PP IC grades
• Implication: Medium MFI supports moderate wall thicknesses and high impact retention over ultra-high flow grades

Mechanical properties – stiffness & impact

• Tensile strength at yield: 27 MPa – strong for load-bearing and structural parts
• Elongation at yield: 9% – supports flexibility and shock absorption
• Flexural modulus: 1100 MPa – high stiffness for automotive, crates, and furniture
• Notched Izod impact (23°C): 160 J/m – high toughness for drop, stacking, and handling resistance

Thermal properties & service envelope

• Vicat softening point (10 N): 150°C – resists deformation under moderate heat
• Heat deflection temperature (0.455 MPa): 90°C – suitable for automotive interiors, furniture, and crates exposed to sunlight or warm conditions

Deep technical insights

• Spheripol-II technology: Ensures uniform heterophasic morphology for consistent impact and stiffness across batches—crucial for OEMs and high-reuse applications.
• Stiffness–impact synergy: 1100 MPa modulus and 160 J/m impact make CM03RR ideal for load-bearing, drop-resistant parts in automotive, logistics, and furniture.
• Medium MFI: Balances flow for moderate wall sections, avoiding brittleness or warpage common in ultra-high flow grades.
• Regulatory breadth: IS 10910 and IS 16738/10909 compliance covers food, pharma, and drinking water contact for packaging and consumer goods.

Applications & industry use cases

Automotive components

CM03RR is perfect for interior trims, semi-structural parts, and components where both rigidity and toughness are required—delivering reliable performance in the cabin and non-critical under-hood areas.

Furniture & consumer durables

Moulders use CM03RR for chair shells, backs, arms, table tops, and storage systems. Its stiffness supports weight-bearing designs, while impact resistance ensures products survive daily use and handling.

Crates, bins, and logistics items

For stackable crates, bins, and pallets, CM03RR’s high impact and stiffness enable repeated drops and high stacking loads without cracking, supporting efficient warehousing and transport.

Rigid packaging & industrial mouldings

CM03RR is also used for buckets, pails, rigid containers, and technical housings—delivering drop resistance and stacking strength for robust packaging and industrial parts.

Processing guidelines for CM03RR PPCP

Recommended injection-moulding window

• Barrel temperature: 190–230°C (mid-range 200–220°C for most parts)
• Mould temperature: 30–40°C (cooler for faster cycles, warmer for improved finish and reduced warpage)
• Packing pressure/time: Essential for ribs and thick sections to avoid sinks due to high stiffness

Design considerations for crates and furniture

• Use moderate wall thicknesses; avoid ultra-thin designs to maintain impact toughness
• Optimize rib and gate design for uniform fill and minimal warpage

Common PPCP moulding issues & troubleshooting

• Short shots: Raise melt temperature or injection speed
• Warpage: Use balanced cooling and uniform wall thickness
• Flow marks: Optimize gate location and injection speed

Performance advantages vs other Polysure PPCP grades

CM03RR vs CM08NR & CM10TE

• CM03RR (3.5 MFI): Best for automotive, furniture, crates—emphasizes stiffness and impact for moderate walls
• CM08NR (8 MFI): Suited for paint pails, higher throughput, slightly less toughness
• CM10TE (9.5 MFI): For battery casings, under-hood auto—optimized for thermal stability and impact

CM03RR vs competitor PPCP grades

Compared to typical 3–4 MFI grades from Reliance, IOCL, or OPaL, CM03RR offers a superior stiffness–impact balance and greater batch-to-batch consistency, thanks to HMEL’s Spheripol-II process and QC.