Ningmei 1102L Homopolymer PP Raffia Grade | High Tensile Extrusion Resin for Woven Sacks & Dry Food Packaging
Product Overview
Ningmei 1102L is virgin homopolymer polypropylene manufactured by Ningxia Coal Industry’s coal-to-olefin gas-phase polymerization line, specially developed for high-speed flat yarn extrusion. With narrow molecular weight distribution and stable melt tension, it effectively cuts filament breakage during continuous raffia production.It owns balanced tensile rigidity and low auxiliary migration formula, only compounded with thermal stabilizer without extra slip and anti-block additives. The resin complies with GB 4806.6, US FDA and EU food contact safety standards, with complete factory COA attached for every batch to realize full quality traceability. Supported by large-scale integrated coal chemical production base, the product maintains stable long-term supply and competitive cost performance for woven sack, binding rope and daily plastic manufacturers. Its wide extrusion processing window reduces frequent equipment parameter adjustment and molding defects to boost overall line production efficiency.
Basic Product Specifications
All data are typical values tested at 23°C on standard 4mm injection specimens, 100% uniform milky white virgin pellets packed in 25kg original woven bags.
Density: 0.905 g/cm³ (ISO 1183)
Melt Flow Rate: 3.0 g/10 min (ASTM D1238, test condition: 230°C / 2.16kg)
Tensile Yield Strength: 32 MPa (ISO 527, 50mm/min)
Elongation at Break: 150% (ISO 527, 50mm/min)Flexural Modulus: 1350 MPa (ISO 178)
Notched Izod Impact (23℃): 2.3 kJ/m² (ISO 180)
Heat Deflection Temperature (0.45MPa): 89°C
Ash Content: ≤0.03%
Additive System: Single thermal stabilizer, no extra slip or anti-block additives
Core Product Advantages
Stable Tensile Performance for High-Speed Raffia
High crystallinity homopolymer PP provides sufficient structural rigidity and uniform stretching performance, perfectly matching high-speed flat yarn extruders to lower broken filament defects. Woven sacks and binding ropes maintain stable dimensional stability under static load to extend service life.
Low Auxiliary Migration & Food Contact Safety
No slip or anti-block masterbatch is added during polymerization, greatly reducing additive bloom and surface migration risks. It will not contaminate grain and dry food inside woven packaging, fully satisfying strict domestic and export food packaging safety standards.
Moderate Chemical Resistance
It can resist dilute acid, dilute alkali, water and alcohol daily chemicals to extend the service life of woven storage sacks and cut replacement costs. Not resistant to strong aromatic and ester organic solvents, unsuitable for long-term contact with highly corrosive media.
Smooth Extrusion Processability
Medium melt flow enables homogeneous plasticization for long-cycle uninterrupted production, minimizing bubble and uneven thickness defects. Compatible with mainstream single-screw raffia extruders to lower reject rates and improve overall production yield.
Main Application Fields
Food Contact Woven Packaging
Food-grade woven sacks, dry grain storage bags and non-oily cold food rigid containers, applicable for food packaging with full food contact compliance.
Industrial Woven Articles
Core raw material for industrial woven sacks, binding ropes, fishing nets and civil geotextiles.Note: This homopolymer PP has low low-temperature impact and no UV stabilizers. It cannot be used for gears, bearings, low-temperature working parts and long-term outdoor structural components.
Processing & Storage Guidelines
Processing Parameters
Extrusion temperature: 190–225°C (feed zone 190–200℃, metering zone 210–225℃). Reference blending ratio of resin to color masterbatch/antioxidant is 95:5; small-batch trial runs are required before mass production.Drying requirement: Ultra-low moisture absorption below 0.01%, pre-drying unnecessary under sealed dry storage. Dry damp pellets at 60–70°C for 1–2 hours to prevent thermal yellowing and molecular degradation.
Storage Requirements
Storage environment: Cool, dry and ventilated warehouse, temperature 5–30°C, relative humidity below 60%.Stacking limits: Do not stack bags over 5 layers to avoid packaging deformation and pellet compaction affecting feeding.Shelf life: 2 years under standard storage conditions, follow first-in first-out management rules. Isolate from direct sunlight, heat sources, open fire and strong organic solvents.
Frequently Asked Questions
Q1: What is the melt flow rate of Ningmei 1102L?A: Its MFR is 3.0 g/10min under ASTM D1238 (230°C / 2.16kg), matching most mainstream high-speed flat yarn extruders.
Q2: Can this resin be used for food contact packaging?A: Yes. The clean low-migration formula meets GB 4806.6, FDA and EU food contact standards, suitable for dry grain and cold food woven packaging.
Q3: How to store pellets to guarantee stable performance?A: Store in cool dry warehouse within 5–30°C with humidity below 60%, stacking height limited within 5 layers, and use up within 2 years following FIFO rules.
Q4: Is it suitable for long-term outdoor use?A: Original pellets contain no UV anti-aging additives and will turn yellow and brittle after long-time sunlight exposure. Add UV masterbatch if outdoor application is required.
Q5: Is the supply of 1102L stable?A: Supported by Ningxia large coal-to-olefin integrated plant, we maintain full-year sufficient spot inventory and consistent batch quality to support long-term bulk orders.
Product Summary
Ningmei 1102L is cost-effective homopolymer PP dedicated to flat yarn extrusion, featuring balanced tensile rigidity, low additive migration and stable extrusion processability. Widely applied in food contact woven sacks and general industrial woven goods, it satisfies mass production demands of sack, rope and food packaging manufacturers.Backed by standardized large-scale coal chemical production and year-round stable inventory, we supply complete TDS, multi-region food contact compliance certificates and original batch COA documents, alongside professional extrusion technical guidance for raffia production lines.If you need detailed technical parameters or bulk wholesale quotations, please contact our sales team directly for one-stop raw material support and after-sales service.
