| HS Code | 843308 |
| Material | Polypropylene PP NSY114G |
| Density | 0.90 g/cm³ |
| Melt Flow Rate | 10 g/10 min (230°C, 2.16 kg) |
| Tensile Strength At Yield | 30 MPa |
| Elongation At Break | >100% |
| Flexural Modulus | 1200 MPa |
| Izod Impact Strength Notched 23 C | 5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 85°C |
| Melting Point | 160°C |
| Rockwell Hardness | R-80 |
| Volume Resistivity | 1E16 ohm·cm |
| Dielectric Strength | 20 kV/mm |
As an accredited Polypropylene PP NSY114G factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Polypropylene PP NSY114G is supplied in 25 kg sealed bags, palletized and wrapped to protect against moisture and contamination. |
| Container Loading (20′ FCL) | Polypropylene PP NSY114G loaded in 20′ FCL, 25kg bags on pallets, approx 20 metric tons per container, wrapped and secured. |
| Shipping | Polypropylene PP NSY114G is a non-hazardous thermoplastic resin, not regulated as dangerous goods for transport. It is stable, non-toxic, and free-flowing. Ship in clean, dry packaging or containers to prevent moisture, contamination, and static buildup. No special temperature controls required, but protect from prolonged exposure to heat and sunlight. |
| Storage | Store Polypropylene PP NSY114G in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid contact with strong oxidizing agents. Maintain indoor storage temperatures below 40°C and ensure good housekeeping to minimize dust accumulation. |
| Shelf Life | Polypropylene PP NSY114G has a typical shelf life of 12 months when stored in original, unopened packaging under cool, dry conditions. |
At 0.8 mm nominal wall thickness, PP NSY114G enters a processing window where injection pressure controls filling more than clamp force. Thin-wall dairy tubs, margarine containers, and delicatessen lids commonly exceed a flow-length-to-thickness ratio of 250:1. Melt-front shear rates at hot-runner gates can rise above 10,000 s-1. Accumulator-assisted high-speed injection moulding machines with shot capacities between 600 cm³ and 1,200 cm³ are used. Clamp force ratings are typically 3,500–6,500 kN. Melt temperature is held at 220–250 °C. Confirmation is by purge pyrometer. Mould temperature is maintained at 15–30 °C with turbulent-flow chillers. Injection velocity is set to 120–200 mm/s. Switch-over from velocity to pressure control occurs at 95–98% of visual fill. Peak cavity pressure is monitored between 35 MPa and 60 MPa. Multi-cavity tools with cold runner splits require restrictor plugs or sequential valve gating. Fill imbalance across cavities should remain below 5%. The limiting defect is not short-shot but post-mould warpage caused by differential shrinkage. Linear mould shrinkage measured to ISO 294-4:2018 is typically 1.0–1.6% in flow direction and 0.8–1.3% transverse. Edge curl is controlled by moving the gate to maximise flow-axis symmetry and by setting pack pressure 30–50 MPa for 1.5–2.5 s. Food-contact status is governed by FDA 21 CFR 177.1520(c) and Regulation (EU) No 10/2011. Overall migration under the EU regulation must remain below 10 mg/dm² in the specified food simulants. Published data for this specific configuration is limited. Grade-specific qualification on the intended tool is therefore required before commercial application.
For high-cavitation moulds above 32 cavities, the tolerance window on hot runner tip temperature is ±5 °C. A single blocked tip produces short shots and shifts flow distribution. A desiccant hopper dryer is not required for routine operations unless regrind content exceeds 30% or the resin has been stored in unsealed octabins at relative humidity above 60%. Surface moisture should be removed by drying for 2 h at 80 °C. In-line near-infrared monitoring of pellet moisture and bulk density provides early warning of silo segregation. Dimensional capability studies on a 24/8 hot-runner stack mould should target a critical dimension CpK above 1.33. If CpK falls below 1.0, the first response is pack-pressure profile adjustment rather than melt-temperature reduction. Incoming melt flow rate should be verified to ISO 1133-1:2022 at 230 °C with 2.16 kg load before barrel temperatures are locked.
In medical device moulding, the same flow behaviour is used for flat-bottom specimen cups, petri dishes, and syringe plunger bodies. The dominant constraint is post-sterilisation dimensional drift. Gamma irradiation at 25–50 kGy breaks polypropylene chains preferentially in the amorphous phase. This increases crystallinity slightly and releases frozen-in mould stress. Moulded parts should therefore be stress-relieved by maintaining a uniform melt temperature of 210–240 °C. Mould temperature is set at 30–50 °C to reduce frozen-in orientation. Hot-runner valve gating is preferred over cold-runner tab gates. The reason is avoidance of uncontrolled packing asymmetries. Injection velocity is reduced to 60–120 mm/s for medical parts with wall thickness above 1.5 mm to avoid jetting. Biological evaluation follows ISO 10993-5 for cytotoxicity and USP <87> for biological reactivity. In ethylene oxide sterilisation, residual gas retention in semi-crystalline PP must be mapped at relative humidity 60–70% and chamber temperature 38–45 °C. Dimensional change is not predicted by a single value. Processors should cap the radial ovality specification at 0.3 mm for a 30 mL cup and validate across three production lots. Steam sterilisation at 121 °C for 30 min is not automatically suitable for unmodified PP because short-term heat deflection may exceed the part support tolerance. If steam cycles are required, the part wall is thickened or the component is supported in a restrained fixture.
A compliance matrix is maintained during qualification:
| Assessment | Standard or regulation | Typical applied limit |
|---|---|---|
| EU food-contact overall migration | Regulation (EU) No 10/2011, Annex I | 10 mg/dm2 or 60 mg/kg |
| USA food-contact clearance | FDA 21 CFR 177.1520(c) | PP olefin polymer clearance |
| Cytotoxicity | ISO 10993-5 | Cell viability ≥70% |
| RoHS restricted substances | Directive 2011/65/EU Annex II | Pb 0.1%, Cd 0.01%, Hg 0.1%, Cr(VI) 0.1% |
| Biological reactivity | USP <87> | Class VI or equivalent |
Because PP NSY114G is frequently trialled in 28 mm PCO 1881 and 38 mm two-start closure geometries, the distinction between seal torque and top-load must be established during process qualification. Application torque is set on a torque meter at 1.8–2.2 N·m for the 28 mm profile. Removal torque after 24 h at 23 °C is normally held below 2.5 N·m for non-child-resistant closures. Tamper-evident band tearing is governed by the stretch ratio at the slitting station. Bridge widths between 0.4 mm and 1.0 mm and score depth 50–70 µm are used. Hinged cap designs are evaluated on an automated flex fixture. A drop in hinge opening force below 0.2 N after 1,000 cycles indicates crack initiation and requires a gate location shift or a reduction in melt temperature. The main processing conflict is that high melt temperature reduces stress and improves hinge life but increases odour and taste transfer into packaged contents. Organoleptic panels for bottled water closures use 60 °C storage for 48 h in glass bottles. Any detectable off-taste triggers a purge of the hot runner and a reduction in melt dwell time below 10 min. Ejection should be delayed until the closure underside is below 50 °C to prevent ovality in the sealing ring.
Environmental stress-cracking resistance is screened in a 50 °C non-ionic surfactant solution for 24 h. Failure is defined as a visible crack at the sealing ring. As-moulded closure ovality should not exceed 0.4 mm across the sealing annulus. If ovality exceeds that value, the tool is re-centred before process parameters are adjusted. The melt cushion is maintained between 3 mm and 6 mm to avoid gas entrapment in the hot runner. For high-speed closure cells running below 6 s cycle time, the holding pressure profile is split into three stages: initial packing at 50 MPa for 0.3 s, secondary packing at 30 MPa for 1.0 s, and gate-seal holding at 15 MPa for 0.5 s.
Repeated domestic dishwasher cycles at 65–75 °C with detergent pH 9–11 produce haze before cracking in translucent PP housewares. The critical performance variable is therefore stabiliser package, not initial gloss. Storage boxes, modular drawer units, and kitchen utensils made from this class of resin are processed at a melt temperature of 200–230 °C. Mould temperature is set at 20–40 °C to preserve surface clarity. Long-term hot water contact above 80 °C may cause polypropylene to soften. Sight glasses and lids should be replaced after 300 cycles if warp exceeds 1.5 mm across a 250 mm span. The use of calcium stearate-based acid scavengers can reduce chloride-induced corrosion in tooling when regrind is used.
The replacement of ABS with PP NSY114G in door panel lower inserts, A-pillar trim substrates, and centre console side covers is most sensitive at the grained surface, not at the fixing boss. The PP component saves mass because the density is 0.90–0.91 g/cm³ compared with ABS at 1.05–1.08 g/cm³. Flexural modulus is lower and must be recovered through rib geometry. Heat deflection temperature to ISO 75-2:2013 at 0.45 MPa is typically 85–105 °C for PP. This limits dark interior parts in solar soak conditions above 90 °C. Scratch resistance is inferior to ABS. A grain depth above 40 µm and a low-gloss surface treatment are used to mask marring. The mould is run with melt temperature 220–250 °C, mould temperature 30–60 °C, and packing pressure 40–70 MPa to minimise sink marks at fixing bosses without generating excessive clamp load. Odour and volatile emissions are measured to VDA 278. Total VOC values above 100 µg/g require purge compound and hot runner temperature reduction. Published data for PP NSY114G in this specific configuration is limited. A complete interior trim substitution should be verified on an instrumented production tool across a summer validation period.
Boss pull-out strength depends on weld-line position at the fixing point. Melt-flow-rate parity alone does not predict fill ratio. A short-shot study across barrel temperatures from 210 °C to 250 °C in 5 °C steps should be performed to map the minimum temperature for acceptable weld-line strength. The cooling time for a 2.5 mm nominal wall is initially set at 18–22 s and adjusted only after a dimensional capability run of 30 consecutive shots. Hot-sprue sticking in cold-runner systems is a common failure when the sprue diameter is below 3.5 mm. An increase to 4.0 mm increases pressure loss tolerance without excessive cycle-time penalty.
In electrical appliance housings, fan shrouds, and internal brackets, continuous-use temperature under IEC 60335-1 becomes the limiting service factor. Unmodified PP is flame class HB under UL 94. This restricts use to low-current, low-heat areas away from live terminals above 0.5 A. The grade is moulded at 230–250 °C with mould temperature 40–80 °C to improve flatness on large covers. Glow-wire testing to IEC 60695-2-11 is often required at 550 °C or 650 °C depending on the end product standard. Unfilled PP may pass at 550 °C but will not meet stricter unattended-appliance requirements without a flame-retardant package. Because the grade is not marketed as a flame-retardant compound, electrical applications should be restricted to housings where clearance and creepage distances satisfy IEC 60664-1. Dimensional tolerance after heat ageing at 85 °C for 500 h should be mapped because PP can lose stabiliser protection and become brittle at exposed weld lines.
For fan shrouds, the material should be run in a tool with conformal cooling inserts. Cycle-time reductions below 25 s require a mould temperature of 60 °C and a cooling circuit turbulent Reynolds number above 10,000. Flow-induced fibrillation at the gate can reduce notched impact strength. Gate diameter should be 1.2–1.8 mm per 100 cm³ of shot volume to limit excessive shear orientation at the entry point.
Competitive Polypropylene PP NSY114G prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Polypropylene PP NSY114G is an injection-moulding homopolymer supplied as free-flowing pellets for thin-wall rigid packaging, caps, closures, and general-purpose technical mouldings. The material is categorized as a controlled-rheology product with a nominal density of 0.900–0.910 g/cm³ when measured under ISO 1183-1:2019. The melt mass-flow rate is reported at 230 °C with a 2.16 kg load according to ISO 1133-1:2022; trade literature assigns the grade to the medium-high-flow segment, but published data for this specific configuration is limited and lot-specific values must be taken from the producer’s certificate of analysis. The product differs from random copolymers in that the backbone contains no deliberate ethylene comonomer, which yields higher tensile yield stress and higher flexural modulus while reducing optical clarity and low-temperature impact. In most commercial versions, the formulation contains a nucleating agent and an acid scavenger; the nucleating agent shifts the crystallization temperature upward and permits faster demoulding at equivalent part thickness.
For feeding stability on high-speed injection lines, pellet geometry and as-supplied moisture are critical. Typical pellet size is specified in the 3.0–5.0 mm range, and moisture content at packaging is usually below 0.10% by weight. When storage occurs in an uncontrolled warehouse with relative humidity above 60%, a desiccant dryer set to 80 °C for 2–4 h is recommended before processing. Because polypropylene is not highly hygroscopic, short-term open storage at low humidity does not require drying; however, surface moisture above 0.10% can generate splay and internal voids in thin-walled parts, especially where vent depths are limited to 0.02–0.05 mm. Feed throat temperature should be kept below 60 °C to prevent pellet bridging and irregular screw loading.
Reciprocating-screw machines with a 20:1 to 24:1 L/D general-purpose polyolefin screw and a 2.5:1 to 3.0:1 compression ratio require a melt temperature window of 220–250 °C. For wall thicknesses below 1.0 mm, the set-point should be shifted to 230–250 °C to reduce pressure drop along the flow path. A typical barrel profile from feed throat to nozzle is 200 °C, 210 °C, 220 °C, 230 °C, and 230 °C, with nozzle temperature controlled between 220 °C and 240 °C. Hydraulic back pressure is normally held at 3–8 bar; higher back pressure above 10 bar can lower throughput and raise melt temperature through shear heating without improving homogeneity. Screw recovery time should not exceed 8 seconds at the selected screw speed; longer recovery may indicate screw wear, incorrect barrel profile, or inadequate feed-section cooling.
At melt temperature, residence time should be kept below 5 minutes at 240 °C. Longer exposure causes thermo-oxidative chain scission that raises the MFR and lowers tensile yield stress; in severe cases, the melt begins to produce yellowing and the mould surface shows plate-out. For nucleated versions of the grade, melt temperatures above 260 °C can degrade the nucleating system and reduce the crystallization speed that is relied upon for short cycle times. Mould temperature should be maintained between 20 °C and 50 °C; the lower range is used for rapid thin-wall cycles, while the upper range improves weld-line strength and surface gloss at the cost of longer sidewall cooling. In hot-runner tools, the manifold temperature should be 240–250 °C and the drop tip should not exceed 260 °C; elevated drop temperatures can produce gate stringing, material degradation, and plate-out around the gate insert.
Injection velocity should be set high enough to fill 90–95% of the cavity before velocity-to-pressure transfer. Transfer from velocity control to pressure control should occur at a screw position that corresponds to a short-shot of 2–5% by volume; earlier transfer increases sink mark variation, while later transfer can flash the tool. Hold pressure is typically set between 35 MPa and 50 MPa cavity pressure measured with direct or indirect sensors. In multi-cavity tooling, runner balancing is critical when the MFR is medium-high because shear-induced imbalance can produce cavity-to-cavity weight variation greater than 1%. Gear-valve hot-runner systems with sequential actuation are preferred; open hot-runner layouts should be evaluated with a fill study using 5–10 short shots. Cold sprue bushing diameter should be at least 3.5 mm for part weights above 50 g, and the sprue puller should be vented to prevent vacuum splay.
For mechanical lot acceptance, injection-moulded specimens are prepared according to ISO 294-1:2017 using Type 1A tensile bars and 80 mm × 10 mm × 4 mm flexural bars. Tensile yield stress is determined at 50 mm/min under ISO 527-2:2012; class-typical values for a medium-high-flow nucleated homopolymer are between 35 MPa and 39 MPa, with elongation at yield in the range 7–10%. Flexural modulus at 2 mm/min under ISO 178:2019 is normally 1,550–1,800 MPa. Notched Izod impact strength at 23 °C under ISO 180:2023 is expected to be 2.5–3.5 kJ/m²; at 0 °C, the value is generally below 2.0 kJ/m². Heat deflection temperature at 0.45 MPa under ISO 75-2:2013 is normally 105–115 °C. These ranges are representative of the product class and are not replacements for the producer’s certified batch data; published data for NSY114G in public technical literature is limited.
Because the nucleating package raises the polymer crystallization temperature, the non-isothermal crystallization temperature is usually between 120 °C and 128 °C when cooled at 10 °C/min in differential scanning calorimetry; this value is approximately 8–12 °C higher than that of a non-nucleated homopolymer of similar melt flow. The higher crystallization temperature shortens the cooling time required to reach demoulding stiffness and reduces post-moulding shrinkage variation. Shrinkage after 24 h is typically 1.0–1.5% parallel to flow and 1.0–1.5% transverse to flow; the exact orientation effect depends on gate location and packing pressure. Moulders should not rely on generic shrinkage values for tooling: a shrinkage study on the intended tool steel and cooling layout is required for dimensional capability studies under ISO 20457:2018.
Flow simulation input parameters for PP NSY114G require shear viscosity data generated by capillary rheometry at 230–250 °C. For a medium-high-flow homopolymer, the apparent shear viscosity at 240 °C and 1,000 s⁻¹ is typically 40–60 Pa·s; at 10,000 s⁻¹ it is usually 10–20 Pa·s. The Cross-WLF viscosity model should be fitted to three temperatures, and the pressure coefficient of viscosity should be assigned in the range 0.2–0.3 MPa⁻¹ for commercial simulation codes. The pvT model should be based on DSC transition data rather than generic polypropylene parameters because the nucleating agent shifts the crystallization transition and changes the density change over the cooling path.
| Property | Test method | PP NSY114G class-typical | PP random copolymer | PP impact copolymer |
|---|---|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022, 230 °C, 2.16 kg | 28–45 g/10 min | 10–20 g/10 min | 15–35 g/10 min |
| Tensile yield stress | ISO 527-2:2012 | 35–39 MPa | 25–30 MPa | 22–28 MPa |
| Flexural modulus | ISO 178:2019 | 1,550–1,800 MPa | 900–1,200 MPa | 1,000–1,300 MPa |
| Notched Izod impact at 23 °C | ISO 180:2023 | 2.5–3.5 kJ/m² | 5–8 kJ/m² | 8–20 kJ/m² |
| Heat deflection temperature at 0.45 MPa | ISO 75-2:2013 | 105–115 °C | 80–95 °C | 85–100 °C |
From the comparative profile, stiffness and heat resistance rather than low-temperature impact or optical clarity drive the selection of PP NSY114G. Random copolymers containing 2–4 wt% ethylene have lower tensile yield stress and lower flexural modulus because the comonomer disrupts crystallization; they provide better contact clarity, lower seal initiation temperature, and improved impact at refrigerator temperatures. Impact copolymers contain a dispersed ethylene-propylene rubber phase in the polypropylene matrix; their notched Izod impact strength at 23 °C can exceed 20 kJ/m², but they display lower modulus, higher haze, and more visible flow-front hesitation in direct-gated thin-wall parts. Compared with a non-nucleated high-flow homopolymer with an MFR above 50 g/10 min, PP NSY114G occupies a lower-flow, higher-strength position that is more suitable for caps and closures requiring both good filling and resistance to top-load deformation.
Batch-to-batch MFR variation in the medium-high-flow segment can be ±3 g/10 min; this affects injection pressure and part weight. Moulders using statistical process control should monitor cushion position, screw recovery time, and part weight after each colour change or silo refill. A reasonable part weight control window for thin-wall packaging is ±0.5% of nominal; larger variation often indicates regrind ratio drift or barrel temperature instability. Regrind addition up to 20% is generally acceptable if the regrind is clean, dry, and free of contamination from other polymers; higher regrind fractions can reduce impact strength and increase yellowing across repeated heat histories.
Substitution of a random copolymer by PP NSY114G first affects optical quality. Homopolymer polypropylene develops larger spherulites and lacks the ethylene comonomer that reduces crystallite size in random copolymers; as a result, plaque haze under the intended cooling rate will be substantially higher. Published quantitative haze data for this specific configuration is limited, so the substitution should be confirmed by moulding a 2 mm plaque and measuring total luminous transmittance under ISO 13468-1:2019 and haze under ISO 14782:2021. If the application requires contact clarity, the homopolymer is generally unsuitable unless the producer has compounded a compatible clarifying agent into the resin. The second consequence is higher stiffness: the part may require a wall thickness reduction or a smaller gate diameter to prevent overpacking and ejection pin penetration on demoulding. The third consequence is lower impact resistance, particularly below -5 °C; freezer storage and drop-load requirements should be revalidated because a homopolymer will not match the impact behaviour of a random copolymer with ethylene content.
In closure applications, replacement of a lower-flow homopolymer by PP NSY114G can reduce injection pressure at the same wall thickness and allow higher cavitation. However, the lower melt viscosity also reduces the shear heating that aids cavity filling; therefore, melt temperature should be kept in the upper range and the screw speed should be increased only after confirming that recovery time remains under 8 seconds. Weld-line strength in multi-gate caps is lower for high-flow grades; weld-line tensile strength should be measured on a welded Type 1A specimen or on a complete closure subjected to internal pressure testing according to the packer’s procedure. Published data for NSY114G in closure-specific configurations is limited, but the general response of nucleated homopolymers to weld-line processing conditions is consistent with this behaviour.
Chemical resistance limitations should be considered for industrial packaging and technical parts. The homopolymer is resistant to aqueous acids, alkalis, and many polar solvents, but it is not recommended for continuous exposure to strong oxidizing acids, aromatic hydrocarbons, halogenated hydrocarbons, or oils above 80 °C because swelling and stress cracking may occur. Contact with copper-based alloys at processing temperatures above 240 °C can accelerate thermo-oxidative degradation; therefore, hopper magnets, nozzle tips, and screw surface treatments should be checked for copper or copper-alloy exposure in long runs. Additive packages containing certain amine-based flame retardants or acidic processing aids can interfere with the nucleating system; the supplier’s additive declaration should be reviewed before blending PP NSY114G with masterbatches or reprocessed material.
For food-contact applications, regulatory acceptance is product-specific and must be confirmed from the supplier’s statement of compliance. For polypropylene homopolymers, the relevant reference framework includes EU Regulation 10/2011 on plastic food-contact materials, FDA 21 CFR 177.1520 for olefin polymers, REACH Regulation 1907/2006, and RoHS Directive 2011/65/EU. The overall migration limit for plastics under EU 10/2011 is 10 mg/dm² of food-contact surface area for general products; specific migration limits for monomers and additives are substance-dependent and should be checked against the resin’s additive declaration. Lot traceability and testing documentation should be aligned to ISO 9001:2015 and, where applicable, ISO 22000:2018 for packaging supply chains.
| Standard or regulation | Scope | Typical verification requirement |
|---|---|---|
| EU 10/2011 | Plastic food-contact materials | Overall migration <10 mg/dm²; specific migration limits as applicable |
| FDA 21 CFR 177.1520 | Olefin polymer food-contact use | Extractables and end-use conditions under 21 CFR |
| REACH 1907/2006 | EU chemical registration | SVHC content 0.1% by weight |
| RoHS 2011/65/EU | Electrical and electronic materials | Pb 0.1%, Cd 0.01%, Hg 0.1%, Cr(VI) 0.1% |
High-speed packaging lines producing thin-wall dairy containers can process the grade in multi-cavity tools with valve-gated hot runners, provided the melt temperature is maintained between 230 °C and 250 °C and the mould is cooled with turbulent water at 10–20 °C. The main processing bottleneck observed in this product class is gate freeze-off during the hold-pressure phase; increasing the gate diameter to 0.8–1.2 mm or reducing the hold time before the final pressure step can stabilise cavity filling without increasing flash. Cycle time is normally governed by demoulding stiffness rather than material solidification because the nucleation system raises crystallization temperature. When switching from a general-purpose non-nucleated homopolymer, the injection pressure and hold pressure should be reduced by 10–20% after installation, using cavity pressure sensors to confirm a stable peak cavity pressure between 35 MPa and 50 MPa. In-mould labels and direct printing may require corona treatment because the homopolymer surface has low surface energy; a dyne level above 38 mN/m is typically specified for adhesion, but the required level depends on ink chemistry and printing speed.
