PP Y40 Resin | PP Fiber Grade

PP Y40 is a high melt flow rate (MFR) polypropylene homopolymer resin with a typical melt flow rate of 38-42 g/10 min (230°C/2.16 kg). This grade is suitable for high-speed spinning and injection molding. Due to its excellent flowability and processing stability, PP Y40 is widely used in industries such as meltblown fabrics, anti-sticking layers for masks, nonwovens, hygiene products, and injection-molded thin-walled products.

As a subcategory of polypropylene, PP Y40 is polymerized from propylene monomers and can be divided by production process into homopolymer types (such as PPH-Y40) and recycled types (such as PP Y40-04). PPH-Y40 is a high-performance virgin material, while PP Y40-04 is targeted for circular economy applications.

Main Grades & Manufacturers

The current mainstream manufacturers include Sinopec Hainan, Qilu Petrochemical, Zhongtian Hechuang, and Sinopec Maoming. Different producers deliver differentiated characteristics through process optimization, such as odor-free grades produced via hydrogen regulation technology or low-VOC grades modified with special additives.

Main Grade	Manufacturer	Key Features	Typical Applications
PPH-Y40	Sinopec Hainan	Low odor, stable color	Anti-sticking layer for face masks, medical protective products
PPH-Y40 (S2040H)	Zhongtian Hechuang	Odor-free, cost-effective	Medical non-woven fabrics, hygiene materials
Y40 Powder	Qilu Petrochemical	Reinforced grade, weather resistance	Corona treatment layer for metallized film, bottle cap material
PP Y40-04	Borealis	Industrial recycled grade, black pellets	General-purpose products with environmental requirements
PPH-Y40	Sinopec Maoming	High strength, heat resistance	Mechanical components, packaging films, insulation materials

Core Technical Features of PP Y40

1. High MFR and Processing Advantages

Melt flow rate (MFR) is its most defining feature. With an MFR of 40 g/10 min, the material demonstrates excellent flowability under testing conditions of 230 ℃ / 2.16 kg, enabling high-speed injection molding and extrusion. Compared to standard PP resin, molding cycles can be reduced by more than 20%. This not only enhances production efficiency but also lowers processing energy consumption, supporting energy-efficient manufacturing.

2. Molecular Structure and Stability

Narrow molecular weight distribution: High molecular chain uniformity ensures stable physical and mechanical properties. Tensile strength reaches above 29 MPa, flexural modulus exceeds 850 MPa, and product color uniformity is excellent with a yellowness index below 3, reducing color variation during processing.

Low odor and environmental performance: Through catalyst optimization and improved processes (such as hydrogen regulation instead of additive degradation), volatile organic compound (VOC) emissions are significantly reduced. Certain grades achieve “odor-free” levels, meeting safety standards for hygiene and personal care applications.

3. Recyclability and Circular Performance

The narrow molecular weight distribution also gives the material stable thermo-mechanical properties, enabling multiple melt processing cycles with high recyclability. For example, PP Y40-04 is a black industrial recycled grade designed specifically for circular economy applications and plays an active role in sustainable manufacturing.

Key Application

Mask Non-woven Fabric Production: In mask manufacturing, the anti-sticking property of PPH-Y40 is especially critical. Traditional PP materials tend to stick due to static electricity and surface tension, increasing equipment cleaning frequency and material waste. PPH-Y40 reduces surface tension through molecular structure optimization, significantly minimizing sticking issues. This reduces equipment downtime by over 30%, while ensuring masks are odor-free with uniform appearance, enhancing product competitiveness.

Processing and Usage Notes

Drying: No pre-drying required under proper storage. If moisture is absorbed, dry at 80 ℃ for 2–3 hours.
Processing temperature: Maintain melt temperature between 220–275 ℃ to avoid degradation above 275 ℃. Mold temperature is recommended around 50 ℃ to control crystallization.
Modification compatibility: Can be enhanced through filled modification (e.g. adding glass fiber) to improve heat resistance and rigidity, or blended modification to improve impact resistance, expanding its use into engineering plastics applications (such as fan blades and heater housings).