PP GRANULES

PP (Polypropylene) granules are a common raw material used in various industries. Here are some general specifications:

Types:

1. Virgin PP granules: Made from new, unused PP resin
2. Recycled PP granules: Made from post-consumer or post-industrial PP waste
3. Filled PP granules: Containing additives like talc, calcium carbonate, or glass fibers
4. Copolymer PP granules: Blended with other polymers (e.g., PE, EVA) for specific properties

Physical Properties:

1. Melt Flow Index (MFI): 1-50 g/10min (depending on grade)
2. Density: 0.9-1.1 g/cm³
3. Particle size: 2-5 mm (typical)
4. Bulk density: 0.5-0.7 g/cm³

Chemical Properties:

1. Purity: 90-99% PP content
2. Ash content: <1-5%
3. Moisture content: <0.1-1%

Grades:

1. Homopolymer (PP-H): General-purpose, high stiffness
2. Copolymer (PP-C): Impact-resistant, flexible
3. Random Copolymer (PP-R): Clear, flexible, and impact-resistant
4. Block Copolymer (PP-B): High impact strength, good toughness

Applications:

1. Injection molding: Automotive parts, packaging, toys
2. Extrusion: Pipes, sheets, profiles
3. Textile: Fibers, fabrics
4. Packaging: Containers, lids, closures

Packaging:

1. Bags: 25-50 kg, woven or paper bags
2. Big bags: 500-1000 kg, flexible intermediate bulk containers (FIBCs)
3. Bulk: Railcars, trucks, or containers