HMEL PP Polysure Y35GR1
Polysure Y35GR1 is a premium Controlled Rheology Polypropylene Homopolymer, engineered by HPCL-Mittal Energy Ltd (HMEL) using advanced Spheripol-II technology. Y35GR1 is purpose-built for high-speed spunbond nonwoven, fine denier multifilament yarn, and extrusion coating. It combines outstanding processability, superior spinnability, and proven resistance to gas fading—making it the first choice for medical, hygiene, and technical textile applications. Manufactured in HMEL’s Bathinda refinery, the brand Polysure stands for consistent quality, regulatory compliance, and technical support.
Technical Properties & Performance Specifications
- Melt Flow Index (ASTM D1238, 230°C/2.16 kg): 35 g/10 min, indicating excellent flow characteristics suitable for high-speed processing and precision moulding applications.
- Tensile Strength at Yield (ASTM D638): 32 MPa, providing strong mechanical performance and reliable structural integrity in finished components.
- Tensile Elongation at Yield (ASTM D638): 10%, offering balanced stiffness with moderate flexibility during processing and end-use.
- Flexural Modulus – 1% Secant (ASTM D790A): 1250 MPa, ensuring good rigidity and dimensional stability for molded products.
- Notched Izod Impact Strength at 23°C (ASTM D256A): 30 J/m, supporting adequate resistance to sudden impact under standard conditions.
- Vicat Softening Temperature (ASTM D1525, 10N): 151°C, demonstrating strong heat resistance for applications exposed to elevated temperatures.
- Heat Deflection Temperature (ASTM D648, 0.455 MPa): 90°C, allowing the material to maintain shape and performance under moderate thermal loads.
Applications & Industry Use Cases
Medical & Hygiene Nonwovens:
Y35GR1 delivers high-speed, stable extrusion for spunbond fabrics used in face masks, surgical gowns, medical coveralls, and hygiene products like diaper topsheets and sanitary napkin backsheets. Its anti-gas fading formulation ensures color stability in sensitive medical and hygiene environments.
Technical Yarns & Industrial Nonwovens: Ideal for fine denier multifilament yarns (<2 dpf), Y35GR1 provides excellent spinnability, making it suitable for applications such as sewing threads, carpet backing, and industrial textiles. In industrial nonwovens, it’s used for filtration media, geotextiles, and crop covers—delivering high throughput and reliable mechanical properties.
Extrusion Coating: Y35GR1’s controlled rheology supports uniform coating in packaging, technical laminates, and nonwoven composites, ensuring process efficiency and product consistency.
Alternatives & Comparative Overview
Several polypropylene grades offer similar processing performance to Y35GR1, with variations in stiffness, processing technology, and application focus. Key alternatives include:
- Y35GR – Melt Flow Index (MFI) 35 using Novolen CR technology with a flexural modulus of around 1150 MPa. Commonly used in nonwoven and multifilament applications. Compared to Y35GR1, it offers slightly lower stiffness.
- 1350YG – MFI 35, produced with IOCL Spheripol-II technology, delivering a flexural modulus of approximately 1200 MPa. Suitable for spunbond nonwovens and diaper applications. Being reactor-based, it typically has less CR (controlled rheology) control compared to Y35GR1.
- RH38 – MFI 38 with OPaL Ineos Gas Phase technology and a flexural modulus of about 1200 MPa. Used in spunbond and fine denier fibers. Its higher MFI improves flow, and the grade is known for anti-gas fading performance.
- Y25GR1 – MFI 25 produced via Spheripol-II technology, with a flexural modulus near 1200 MPa. Best suited for BCF (Bulk Continuous Filament) and heavier denier yarn applications. The lower MFI supports stronger yarn formation.
- E35RR1 – MFI 35 using Spheripol-II technology, flexural modulus around 1200 MPa. Primarily designed for extrusion coating applications, offering coating-optimized processing characteristics.
These alternatives allow manufacturers to choose grades based on processing technology, stiffness requirements, and end-use performance, helping optimize production efficiency and product quality.
Y35GR1 stands out for its Spheripol-II controlled rheology, highest flexural modulus (1250 MPa), and best-in-class spinnability—making it the premium choice for medical and fine denier nonwoven applications
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FAQs
Frequently Asked Questions
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How does Y35GR1 resist gas fading?
Is Y35GR1 suitable for N95 mask production?
What differentiates Y35GR1 from Y35GR and 1350YG?
Can Y35GR1 be used for food contact and medical applications?
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