Reliance PPCP Repol B220MN

Reliance Repol B220MN is a high-flow polypropylene (PP) impact copolymer (PPCP) granule engineered by Reliance Industries for demanding injection moulding applications. With a melt flow rate of 22 g/10 min and nucleated for fast cycles, B220MN is trusted by OEMs and moulders for rigid packaging, automotive components, housewares, and appliance parts. The grade’s balanced stiffness and impact strength, combined with reliable dimensional stability, make it a go-to PPCP for consumer and industrial plastics. B220MN is supplied as natural granules and is suitable for food-contact and regulated applications (per FDA 21 CFR 177.1520 and IS 10910).

Technical specifications of Reliance Repol B220MN

Flow & physical properties

• Melt Flow Rate (MFR): 22 g/10 min (230°C/2.16 kg) – enables rapid filling of thin sections, ribs, and complex moulds, reducing cycle times
• Density:90 g/cc – typical of PP impact copolymers, supporting lightweight design

Mechanical performance: stiffness & impact strength

• Tensile Strength at Yield: ~25 MPa – offers a solid balance between flexibility and strength
• Flexural Modulus: ~1.1 GPa – medium stiffness, good for load-bearing and structural parts
• Notched Izod Impact: High toughness at room temperature, much tougher than PP homopolymer – ideal for parts that face drops or repeated handling

Thermal properties & service temperature window

• Heat Deflection Temp (HDT): ~100°C (0.46 MPa) – suitable for room-temperature and moderately warm conditions, such as appliance interiors and automotive trims
• Vicat Softening Point: Typical of PP IC, supporting service up to 90–100°C

Functional Features

Reliance Repol B220MN brings together process efficiency, material reliability, and design flexibility. It’s nucleated for faster crystallisation and shorter cycles, helping you boost productivity. The grade’s impact-stiffness balance allows for robust, lightweight parts, and its food-contact compliance opens up regulated market opportunities.

Applications and industry use cases

Household and consumer plastic products

B220MN is used in buckets, storage bins, kitchenware, furniture components, and other houseware items. Its high flow and toughness mean parts are lightweight, durable, and resistant to everyday drops and knocks.

Appliances and electrical components

Appliance makers use B220MN for housings, control panels, knobs, and internal parts in fans, coolers, washing machines, and more. The grade’s impact and stiffness help these parts last, while its thermal profile is great for room-temperature and mildly warm areas.

Automotive and industrial parts

For non-critical interior trims, battery cases, and light covers, B220MN’s toughness and processability shine. It handles vibration and moderate impacts better than standard PP, making it a cost-effective solution for automotive interiors and industrial covers.

Rigid packaging, crates, caps & closures

B220MN is trusted for injection-moulded crates, pallets, rigid packaging, and closures that need to withstand logistics stress. Its high flow enables thinner walls and faster cycles, helping manufacturers cut weight and boost output.

Processing guidelines for PPCP Repol B220MN

Recommended injection-moulding parameters

• Melt temperature: 190–240°C (lower for standard parts, higher for thin-wall or complex shapes)
• Mould temperature: 20–50°C (colder for speed, warmer for finish/stability)
• Injection speed & pressure: Use high speed to exploit flow; ensure packing to avoid sink in ribs/bosses
• Regrind usage: Clean, limited regrind is generally safe if contamination is controlled

Design tips for thin-wall and multi-cavity tools

• Use uniform wall thickness and rounded corners to reduce stress
• Gates and runners should be sized for high-flow PP IC to avoid short shots
• Thin-wall designs benefit from B220MN’s flowability and cycle-time reduction

Common PP injection-moulding defects and troubleshooting

• Warpage: May be caused by uneven cooling or mould temperature; adjust cooling and packing
• Flow lines: Increase injection speed or temperature; check gate location
• Short shots: Raise temperature or speed; ensure venting is adequate

Performance advantages vs other PP grades

B220MN vs PP homopolymer:

Much higher impact strength, especially at low temperatures, but slightly less stiff and heat-resistant.

B220MN vs random copolymer PP:

Much tougher but opaque; perfect where clarity isn’t needed but durability is.

B220MN vs engineering plastics (ABS, PC/ABS):

Lower cost and density, good for non-high-heat parts, but less heat-resistant than engineering plastics.

Why choose B220MN?

• Faster cycles, thinner walls, and higher productivity than many other PP grades
• Balanced performance for a wide range of consumer, appliance, and automotive parts