PetroChina Fushun HDPE 5050
- Product Name: PetroChina Fushun HDPE 5050
- Factroy Site: Yudu County, Ganzhou, Jiangxi, China
- Price Inquiry: admin@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- PetroChina Fushun HDPE 5050 is typically used in formulations when melt flow rate and density and processing temperature and pressure must be controlled within specific ranges.
| HS Code | 544105 |
| Density | 0.954 g/cm³ |
| Melt Flow Rate | 0.35 g/10 min |
| Tensile Strength At Yield | ≥24 MPa |
| Elongation At Break | ≥500% |
| Flexural Modulus | ≥900 MPa |
| Vicat Softening Temperature | ≥120 °C |
| Brittleness Temperature | ≤ -70 °C |
| Environmental Stress Cracking Resistance | ≥1000 h |
| Hardness | 60 Shore D |
| Water Absorption | <0.01% |
| Dielectric Constant | 2.3 |
| Volume Resistivity | >10^16 Ω·cm |
| Melting Point | 130-135 °C |
| Crystallinity | 80-90% |
| Mold Shrinkage | 1.5-3.5% |
| Thermal Conductivity | 0.4 W/m·K |
| Ash Content | ≤0.05% |
| Moisture Content | ≤0.05% |
| Form | Pellets |
| Color | White |
As an accredited PetroChina Fushun HDPE 5050 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | PetroChina Fushun HDPE 5050 supplied in 25 kg PP woven bags, 40 bags per pallet, or 1,000 kg jumbo bags. |
| Container Loading (20′ FCL) | PetroChina Fushun HDPE 5050, 25 kg bags, 20′ FCL loads approximately 17–18 MT net, palletized, securely stowed for shipment. |
| Shipping | PetroChina Fushun HDPE 5050 is shipped as a non-hazardous polymer resin, typically in 25 kg PP woven bags or 500–1000 kg jumbo bags, palletized and stretch-wrapped. It is transported in dry containers or trucks and stored away from moisture, direct sunlight, and excessive heat, following standard polymer handling practices. |
| Storage | Store PetroChina Fushun HDPE 5050 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, sparks, and open flames. Keep original bags or containers tightly closed, palletized, and off the floor. Protect from moisture, dust, oils, and other contaminants. Avoid prolonged UV exposure. Follow local regulations and good industrial hygiene practices. Maintain clean, labeled, stable stacks to prevent bag damage. |
| Shelf Life | Shelf life is typically 12 months in original packaging, stored cool, dry, ventilated, and protected from sunlight and contamination. |
On shuttle blow-moulding lines producing 10–25 L industrial jerry cans, PetroChina Fushun HDPE 5050 is run at a melt temperature of 190–205 °C with a die gap of 1.2–2.2 mm and a blow-up ratio of 2.0–2.8:1. The grade’s nominal density of 0.950 g/cm³ under ISO 1183-1:2019 and melt flow rate of 0.5 g/10 min under 190 °C/5.0 kg per ISO 1133-1:2022 place it in the high-molecular-weight blow-moulding band, where parison melt strength is sufficient to limit drawdown to less than 12% over a 500 mm hang time. Tooling employs a diverging bushing with a land length of 12–15 times the annular gap; flash pockets are reduced to 0.3–0.5 mm at the pinch-off land. Regrind incorporation at 20–30 wt% is standard for non-food containers, but the pinch-off weld zone becomes the controlling quality gate because regrind raises gel count and die pressure. Process conflict emerges above 210 °C, where parison drawdown exceeds 15% and tail flash thickness becomes insufficient for a clean pinch-off weld; below 175 °C, die lines and melt fracture appear as the melt enters the diverging die land. Moulds with 0.8–1.5 mm pinch-off lands and polished pinch edges operated at 12–18 °C reduce tail flash cracks and improve drop-test survival of filled containers under UN drop height protocols. A production-scale failure mode observed on shuttle machines is cold-pinch porosity when accumulator head pressure drops below 20 MPa; the remedy is to raise die land temperature to 195 °C and reduce parison extrusion speed by 10–15%. Blow-moulded containers manufactured under this regime carry UN specification markings for dangerous goods when the finished wall thickness exceeds 1.2 mm and the closure meets ADR/RID torque requirements. Food-contact variants are excluded unless a 100% virgin 5050 stream and FDA 21 CFR 177.1520 olefin polymer compliance are demonstrated. Terminal parts include 10–25 L jerry cans for hydraulic fluids, detergents, and agrochemical concentrates, where wall thickness, weld integrity, and UN marking are inseparable acceptance criteria.
What Draw Ratio Window Avoids Fibrillation in High-Tenacity 5050 Monofilament?
Single-strand and multifilament lines processing 5050 into rope and netting yarn operate with a 30:1 L/D single-screw extruder, barrel profile 180–230 °C, screen pack 60/80/100 mesh, and a multi-filament die with hole diameters of 1.0–2.5 mm. The air gap between die face and quench water is held at 15–30 mm; water temperature is maintained at 28–40 °C to retard spherulite growth and preserve drawability. First-stage drawing in hot water at 80–90 °C is limited to 3.5:1–4.5:1, and second-stage hot-air drawing at 95–110 °C adds 2.5:1–3.0:1, yielding a total draw ratio of 8:1–11:1. Above 11:1, the monofilament tends to fibrillate along the extrusion direction, reducing tensile tenacity from the typical 0.28–0.34 N/tex measured according to ASTM D2256/D2256M-21. A relaxation of 3–5% in an annealing oven at 100–115 °C is applied before wind-up. UV stabilization is achieved by metering a HALS-containing masterbatch at 2.0–4.0 wt% at the feed throat; pigment masterbatch at 3.0–5.0 wt% is used for black or green netting. Overfeeding pigment above 5.0 wt% lowers melt strength and causes die lip drool. Finished ropes and aquaculture cage nets are assessed under ISO 1805:2014 for mesh breaking force and ISO 4892-2:2013 for UV weathering retention. Terminal uses include braided marine ropes, gillnets, aquaculture cage netting, and safety barrier mesh.
| Parameter | Small-diameter netting filament | High-tenacity rope filament |
|---|---|---|
| Die hole diameter | 1.2 mm | 2.0 mm |
| Quench water temperature | 30 °C | 35 °C |
| Total draw ratio | 8.5:1 | 10:1 |
| Annealing oven temperature | 105 °C | 110 °C |
High-Stalk Bubble Geometry and Frost Line Position for 20–50 kg Sack Film
High-stalk film lines with a 65 mm grooved-feed extruder and a 300 mm die run 5050 at a melt pump suction pressure of 25–30 MPa and an output of 180–220 kg/h. The die gap is set to 0.9–1.2 mm, and the blow-up ratio is held between 3.5:1 and 4.5:1; frost line height is fixed at 7–9 die diameters to produce the characteristic high-stalk bubble. Film thickness ranges from 30 µm to 80 µm, and the bubble is supported by a high-velocity air ring with lower lip height of 5–8 mm above the die lip. The polymer is dry-blended with 15–30 wt% of an LLDPE with a melt flow rate of 1.0 g/10 min to raise dart impact from the HDPE baseline; edge trim and slit waste are re-extruded at 10–20 wt% without exceeding 0.5 mm gel counts. Heavy-duty sack film is tested according to ASTM D882-18 for tensile strength and ASTM D1709-22 for dart drop; a 50 µm film typically shows a dart drop of 120–160 g when 20 wt% LLDPE is present, but published data for 5050-specific formulations is limited and incoming resin lots are screened by melt flow and gel count before line trials. Bubble instability occurs when the frost line is raised above 9 die diameters or when the die lip exit velocity exceeds 1.4 m/s; both conditions shift the bubble into a metastable regime that produces gauge bands at ±8% deviation from target. For sack film, the acceptable gauge variation is below ±5% per 1.0 m circumference, verified by on-line capacitance gauges. Terminal uses include 20–50 kg industrial sacks, fibreboard-free dunnage bags, and agricultural bulk liners.
On a 90 mm barrier-screw sheet extrusion line fitted with a gear pump and a 1.5 m flex-lip die, 5050 is processed into 2.5–4.0 mm sheet for returnable logistics dunnage. The roll stack is operated with a top roll at 70–85 °C, middle roll at 65–75 °C, and lower roll at 55–65 °C to prevent curl and to keep sheet sag at 400 mm span below 6 mm during subsequent thermoforming. Plug-assisted forming is performed at a sheet surface temperature of 140–160 °C; mould temperature is held at 20–35 °C. The blend is 60–80 wt% virgin 5050, 20–40 wt% clean regrind, and 2.0 wt% carbon black masterbatch for UV resistance. The high molecular weight of 5050 reduces sheet sag relative to lower-viscosity HDPE grades, but the melt temperature must not exceed 215 °C because oxidative degradation generates surface pitting. Formed parts are checked under ISO 527-2:2012 for tensile modulus and ASTM D648-18 for heat deflection temperature at 0.455 MPa; RoHS 2011/65/EU compliance is maintained when cadmium-free pigments are used. The main parts are pallet lids, automotive dunnage trays, and reusable interlayer sheets.
When Corrugated Drainage Pipe Replaces PVC in Acidic Sulphate-Rich Soil
Non-pressure double-wall corrugated pipe from 5050 is produced on a single-screw extruder with a grooved barrel and a 30:1 L/D screw, melt temperature 190–205 °C, and a pipe corrugator with vacuum mould blocks. The die gap is 0.6–1.2 mm; the outer wall is formed against chilled blocks at 15–25 °C. The resin is specified for acidic sulphate-rich soils with pH in the 4.5–6.0 range where flexible HDPE joints resist ground movement and root intrusion better than rigid PVC systems; the controlling property is long-term environmental stress crack resistance, screened by notched constant-strain testing under ASTM D1693-15 Condition B. The compound contains 2.0–2.5 wt% carbon black masterbatch to achieve a dispersion rating not exceeding 3 per ISO 18553:2002. Pipe sections are evaluated under EN 13476-2:2018 for ring flexibility and impact resistance; wall thickness for a 110 mm nominal diameter SN8 class is 1.8–2.2 mm depending on corrugation geometry. Applications include agricultural field drainage, stormwater retention, and roadside subsoil drainage.
Low-Sag Profile Die Design for Cable Duct Wall Sections
Cable duct and protective conduit profiles are extruded from 5050 through a profile die with land-length-to-wall-thickness ratios of 10:1–15:1 to compensate for the high molecular weight and die swell of the grade. The extruder is a 45–65 mm grooved-feed single screw with a barrel profile from 175 °C at the feed zone to 200 °C at the die; vacuum calibration tanks operate at 15–25 °C water temperature and −0.3 to −0.5 bar vacuum. Melt pressure before the screen pack is held below 30 MPa to prevent shear heating and melt fracture at the profile lip. The blend is 100% virgin 5050 with 2.0–2.5 wt% carbon black for weathering and 0.5 wt% processing aid; recycled profile scrap can be added up to 15 wt% without visible die lines. Compliance for conduit is assessed under EN 61386-1:2008 for impact and compression at 23 °C, and the material is tested under ASTM D638-14 for tensile yield at 50 mm/min. Terminal parts include 25–50 mm electrical conduit, slit cable duct, and fibre-optic protective trunking.
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- PetroChina Fushun HDPE 5050 is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: admin@ascent-chem.com.
PetroChina Fushun HDPE 5050 is a high-density polyethylene grade produced by PetroChina Fushun Petrochemical Company and designated by the producer for blow moulding and sheet extrusion. Lot-release documentation typically lists a nominal density of 0.950 g/cm³ according to ISO 1183-1 and a melt mass-flow rate of 0.50 g/10 min under ISO 1133-1 at 190 °C with a 5.0 kg piston load. The suffix 5050 is conventionally read as 0.50 for the melt index and 0.950 for the density, although the loading condition must be confirmed on the certificate of analysis because some trade publications report high-load melt indices under 21.6 kg. The material is supplied as opaque white pellets and is used in industrial containers, chemical drums, intermediate bulk container liners, automotive fluid reservoirs, and thermoformed sheet. Compared with HDPE injection-moulding grades having melt flow rates above 5.0 g/10 min, HDPE 5050 exhibits greater melt strength during parison formation and lower sink marks in thick sections. Published data for this specific configuration is limited; mechanical values and processing limits should be verified against the current PetroChina Fushun product datasheet and the lot-specific certificate of analysis.
What Limits Parison Stability and Extrusion Output in HDPE 5050?
Because the nominal melt mass-flow rate is 0.50 g/10 min, HDPE 5050 behaves as a high-viscosity polyethylene with melt strength sufficient for large blow moulded parts. Parison stability is limited by sag deformation under self-weight and by die swell at the die exit. In production practice, melt temperature measured at the die outlet is maintained between 180 °C and 220 °C; the lower boundary is set by melt fracture and excessive head pressure, while the upper boundary is set by parison sag and surface oxidation. Adjustable die gaps of 1.5 mm to 3.0 mm and land length-to-gap ratios of 10:1 to 20:1 are used on accumulator heads to control die swell. Extruders specified for this viscosity class are typically single-screw machines with grooved-barrel feed sections and barrier screws having L/D ratios from 24:1 to 30:1. Output rate is constrained by the onset of melt fracture at critical shear rates rather than by plasticating capacity alone; the critical shear rate is determined by stepwise output trials on the actual line. Capillary rheometry at 190 °C according to ISO 11443 is recommended for lot-to-lot comparison of shear viscosity. The addition of high levels of regrind alters the melt-extensional behaviour and should be limited to the percentage specified in the user’s process validation.
On shuttle blow moulding lines producing 220 L tight-head chemical drums, HDPE 5050 is commonly processed with parison programming to redistribute wall thickness toward chime, top, and handle regions. The accumulator head is operated with a barrel profile of 180 °C to 200 °C and a die head temperature of 190 °C to 210 °C; mould temperature is held between 12 °C and 25 °C to control cooling rate and part shrinkage. Blow air pressure is set at 0.6 MPa to 0.8 MPa. Clamp force demand for a 220 L drum mould generally falls between 500 kN and 1,200 kN depending on pinch-off length, mould weight, and parison flash. Parison mass is set 5% to 10% above final part mass to cover pinch-off waste and post-mould trimming. Wall-thickness non-uniformity is the dominant defect mode; infrared wall-thickness gauges with 0.01 mm resolution are used to adjust the parison profile. The same resin is processed on multi-cavity battery blow moulders for 20 L to 60 L containers. For a 25 L jerry can on a single-station shuttle machine, cycle time typically ranges from 55 s to 75 s, but cycle data must be established on the actual tool. Unlike high-flow HDPE injection grades, HDPE 5050 is not recommended for thin-wall injection moulding below 2.0 mm nominal wall thickness because the high viscosity leads to excessive pressure drop and short shots.
Incoming resin handling for HDPE 5050 requires protection from outdoor storage and surface condensation. Although high-density polyethylene is not strongly hygroscopic, surface moisture introduced by bulk handling can create splay and internal bubbles in thick blow moulded walls. If the pellet surface is wet, a dehumidified-air hopper set at 70 °C to 80 °C for 2 h to 4 h is used before extrusion. Incoming lots are inspected for density and melt flow rate against the certificate of analysis before line release; a lot change is treated as a process change because slight molecular-weight shifts alter die swell and pinch-off strength. Blending of regrind is permitted only after validation; typical regrind addition for blow moulding of chemical containers is kept below 20% by mass to limit ESCR loss. Metal contamination from grinders is monitored with magnets and sieves; gel contamination is controlled by screen packs and by purging after high-temperature shutdowns.
Mechanical Response and Certificate-of-Analysis Test Standards
Mechanical characterisation of HDPE 5050 is carried out with tensile, impact, and environmental stress crack resistance methods. The certification data for each lot normally includes density and melt flow rate as mandatory parameters, with mechanical properties supplied as informative values unless fixed by a user specification. For tensile testing, specimen conditioning at 23 °C and 50% relative humidity for 88 h is applied according to ISO 291 unless the certificate of analysis specifies otherwise.
| Parameter | Test standard | Typical lot-acceptance role |
|---|---|---|
| Density | ISO 1183-1 | Mandatory |
| Melt mass-flow rate | ISO 1133-1 | Mandatory |
| Tensile yield stress and elongation at break | ISO 527-2 | Informative |
| Environmental stress crack resistance | ASTM D1693 | Informative |
| Notched Izod impact strength | ISO 180 | Informative |
| Moisture content | ISO 15512 | Optional |
Environmental stress crack resistance is conventionally assessed in a surfactant solution at 50 °C; the exact bending notch and solution condition are defined by the selected condition of ASTM D1693 on the certificate of analysis. HDPE with a density of 0.950 g/cm³ typically exhibits tensile yield stress in the range of 22 MPa to 28 MPa under ISO 527-2 and elongation at break above 600%, but product-specific values must be read from the current datasheet. For food-contact articles, lot-specific compliance with FDA 21 CFR 177.1520, EU Regulation 10/2011, and GB 9685 must be confirmed because not all production campaigns are necessarily certified for food use.
For sheet extrusion lines feeding thermoforming of transport trays, pallet liners, and secondary chemical containment trays, HDPE 5050 is processed through a single-screw extruder with a barrier screw, a screen pack of 60/80/100 mesh, and a gear pump to damp pressure pulsation. The cast sheet die is set to a die gap of 2.0 mm to 3.0 mm for sheet thicknesses from 2.0 mm to 8.0 mm. Barrel temperatures are profiled from 180 °C at the feed zone to 210 °C at the die; adaptor and die temperatures are held between 200 °C and 220 °C. Chill roll temperatures are controlled at 60 °C to 90 °C to prevent excessive crystallinity and to maintain flatness. Extrusion output for a 120 mm extruder with a 30:1 L/D ratio is limited by melt temperature and screen pressure; screen changes are scheduled when head pressure increases by 10% over the start-of-run value. Thermoforming sheet produced from this grade is subsequently formed at sheet-surface temperatures of 130 °C to 150 °C. The main processing difference from a high-flow HDPE film grade is the higher head pressure and greater die swell, which require wider die gaps and more aggressive melt-temperature management.
When HDPE 5050 Is Substituted for HDPE 5000S or a PE100 Pipe Grade
Substitution of HDPE 5050 for other high-density polyethylene grades is permissible only when the part geometry and performance requirements match the melt strength, density, and environmental stress crack resistance of the product. HDPE 5000S is a blow moulding grade with a melt flow rate typically below 1.0 g/10 min and is used for similar large containers; HDPE 5050 differs primarily in its nominal density and lot-release melt index. A PE100 pipe grade is not a direct substitute because it is designed for long-term hydrostatic strength under ISO 1167 and ISO 9080 and is characterised by slow crack growth resistance; HDPE 5050 is not continuously evaluated as a pressure pipe material.
| Grade class | Nominal melt flow rate | Nominal density | Primary process | Primary long-term performance indicator |
|---|---|---|---|---|
| PetroChina Fushun HDPE 5050 | 0.50 g/10 min | 0.950 g/cm³ | Blow moulding, sheet extrusion | ESCR, wall-thickness stability |
| High-flow HDPE injection grade | 5.0–20.0 g/10 min | 0.955–0.965 g/cm³ | Injection moulding | Warpage, shrinkage |
| PE100 pipe grade | 0.20–0.50 g/10 min | 0.945–0.955 g/cm³ | Pipe extrusion | Slow crack growth, hydrostatic strength |
| High-density film grade | 0.50–2.0 g/10 min | 0.945–0.955 g/cm³ | Blown/cast film | Dart impact, tear |
Because melt flow rate condition varies among product classes, direct numerical comparison requires the loading condition stated on the certificate of analysis. A change from HDPE 5050 to another grade requires verification of pinch-off strength, ESCR, shrinkage, and weld-line integrity on the target tool; published data for this specific substitution is limited.
In automotive washer-fluid reservoirs and fuel-tank filler necks produced from HDPE 5050, chemical resistance is evaluated with immersion testing in the intended service fluids at elevated temperature, typically 60 °C for durations of 14 days to 42 days according to an internal test protocol or ISO 175. The material retains dimensional stability in common hydrocarbon and mild aqueous chemical environments, but strong oxidising acids and aromatic solvents require case-by-case validation. Hot-plate welding and spin welding are the most common joining methods for blow moulded components manufactured from this grade; weld strength is assessed by burst testing of the finished container and by tensile testing of welded specimens according to ISO 527-2. Weld zones are sensitive to oxidation if melt temperature exceeds 220 °C or if residence time is prolonged; purging with a low-melt-index HDPE is required after coloured or filled runs. The product is not recommended for continuous exposure to strong oxidisers or for applications requiring sustained internal pressures above the validated hydrostatic limit of the finished article.
