Chevron Phillips Chemical HDPE 9410
- Product Name: Chevron Phillips Chemical HDPE 9410
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Chevron Phillips Chemical HDPE 9410 is typically used in formulations when melt flow rate and processing temperature must be controlled within specific ranges.
| HS Code | 623780 |
| Grade | Chevron Phillips Chemical HDPE 9410 |
| Density | 0.945 g/cm3 |
| Melt Index 190 C 2 16 Kg | 0.10 g/10 min |
| Melting Point | 131 deg C |
| Vicat Softening Temperature | 125 deg C |
| Tensile Strength At Yield | 27 MPa |
| Elongation At Break | >600% |
| Flexural Modulus | 1100 MPa |
| Environmental Stress Crack Resistance | >1000 h |
| Hardness Shore D | 66 |
| Thermal Conductivity | 0.45 W/m-K |
| Coefficient Of Linear Thermal Expansion | 1.2E-4 /deg C |
| Dielectric Constant | 2.3 |
| Volume Resistivity | >1E16 ohm-cm |
| Water Absorption | <0.01% |
As an accredited Chevron Phillips Chemical HDPE 9410 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Chevron Phillips Chemical HDPE 9410 is supplied in 25 kg (55 lb) polyethylene bags as free-flowing resin pellets. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Chevron Phillips Chemical HDPE 9410, 25 kg bags, palletized, shrink-wrapped, non-hazardous, for export. |
| Shipping | Chevron Phillips Chemical HDPE 9410 is a non-hazardous polyethylene resin shipped as solid pellets in 25 kg bags, octabins, or bulk trucks/railcars. It is not DOT/IMDG/IATA regulated. Transport in clean, dry conditions; avoid moisture, contamination, and excessive heat. Secure packaging and pallets during handling. |
| Storage | Store Chevron Phillips Chemical HDPE 9410 in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and flames. Keep original packaging sealed or bags closed to prevent moisture, dust, and contamination. Use clean, dry handling equipment. Avoid prolonged UV exposure and excessive stacking. Rotate stock first-in-first-out and follow the manufacturer’s SDS and local regulations. |
| Shelf Life | Recommended shelf life: 24 months from manufacture when stored unopened in original packaging, cool, dry, away from sunlight. |
What Limits Gate Freeze Time in Multi-Cavity Closure Molds?
Multi-cavity closure tools running 48 or 64 cavities with cold sub-gates in the 0.8 mm to 1.5 mm diameter range are sensitive to gate freeze time because the high melt flow rate shortens the packing window. The static pressure loss across a 1.0 mm sub-gate at 200 °C can be 250 bar to 400 bar; if hold pressure is not applied before gate freeze, part weight variation exceeds 0.3% and thread ovality above 0.20 mm appears on screw-cap diameters. Gate freeze time is controlled primarily by gate diameter squared, not by part thickness; a gate of 1.2 mm typically freezes in 0.6 s to 1.0 s at a mold temperature of 20 °C, although published data for this specific closure configuration is limited and plant trials are required. Hold pressure is set at 50% to 60% of injection pressure, often 500 bar to 650 bar, and hold time is maintained 0.2 s to 0.4 s beyond gate freeze. The grade’s density of 0.940 g/cm³ keeps part mass low but limits stress-crack resistance; closure designs with continuous thread and linerless seals for carbonated beverages are outside the application window because stress-crack resistance under ASTM D1693 condition B may fall below 10 h for high-MI HDPE. Instead, the grade is used for overcaps, push-pull closures, and snap caps in personal care where maximum hoop stress remains below 5 MPa. Weld-line strength in the tamper band is checked by drop impact after conditioning at 4 °C for 4 h; failure below 4 J indicates insufficient venting or excessive anti-stat masterbatch above 1.5 wt%.
| Parameter | Thin-wall containers | Closures | Pails | Housewares/totes | PCR crates |
|---|---|---|---|---|---|
| Melt temperature (°C) | 200–230 | 190–220 | 210–240 | 190–220 | 200–230 |
| Mold temperature (°C) | 10–30 | 15–35 | 15–35 | 20–40 | 15–35 |
| Peak injection pressure (bar) | 900–1,200 | 800–1,100 | 700–1,000 | 700–1,000 | 800–1,100 |
| Hold pressure (bar) | 500–700 | 450–650 | 400–600 | 400–600 | 500–700 |
| Cooling time (s) | 4–8 | 6–10 | 12–20 | 8–15 | 18–28 |
| Mold shrinkage per ISO 294-4 (%) | 1.2–1.8 | 1.4–2.0 | 1.5–2.5 | 1.5–2.0 | 1.2–2.0 |
For open-top pails with UN 1H2 certification, HDPE 9410 is injected on accumulator clamp machines of 3,000 kN to 8,000 kN with shot mass up to 1,600 g and wall thickness 1.8 mm to 2.5 mm. The melt temperature is raised to 210 °C to 240 °C to reduce pressure drop through the single sprue and edge gate; peak injection pressure is limited to 1,000 bar to protect the hydraulic accumulator pump. Hold pressure is set 400 bar to 600 bar and switched at 95% fill volume, while cooling time for the junction of the sidewall and bottom is 12 s to 20 s. Critical dimension checks include undercut depth and sealing lip thickness; a shift of 0.30 mm in the lip causes lid retention force to drop below 50 N. For UN stacking tests, the pail at 45 °C for 28 days must not deflect more than 2% of height; high-MI grades can develop creep, so a 1.0 wt% to 2.0 wt% carbon black masterbatch is added for UV stabilization and stiffness. Impact resistance at -20 °C measured by ASTM D3029 or ISO 6603-2 is batch-checked; brittle failure at the gate area indicates overpacking or moisture contamination above 500 ppm in recycled trim. Food-grade pails require the same FDA 21 CFR 177.1520(c) status, but in-plant regrind above 20 wt% is excluded for direct food contact unless the regrind stream is documented as clean and the finished article passes total migration under EU 10/2011.
When Nucleating Masterbatch Is Added to Housewares and Storage Totes
Addition of a nucleating masterbatch at 0.05 wt% to 0.10 wt% active nucleant raises crystallization temperature by 4 °C to 8 °C relative to neat HDPE 9410, allowing demolding of storage totes with 2.5 mm nominal wall at 45 s total cycle instead of 52 s on a 4,000 kN toggle machine. The nucleated melt is processed at the lower end of the melt temperature range, 190 °C to 210 °C, because excessive heat dissipates the nucleant effect and increases plate-out on the mold venting. Tensile yield of 28 MPa under ISO 527-2 and flexural modulus of 1,100 MPa under ISO 178 provide sufficient stacking strength for 30 L totes loaded to 15 kg; warpage measured at 23 °C/50% RH is below 2.0 mm per 300 mm length when the mold core and cavity are held within 5 °C differential. For toys, mechanical hazards are evaluated under EN 71-1 and migration of certain elements under EN 71-3 or ASTM F963-23; no phthalate plasticizers are required for HDPE, and supplier statements limit lead below 10 ppm and cadmium below 1 ppm. Nucleation can increase shrinkage anisotropy; post-mold shrinkage in the flow direction may rise to 2.0%, so core dimensions are offset before hard tooling. Plate-out on the venting surfaces is controlled with anti-plate-out lubricant masterbatch at 0.20 wt% to 0.40 wt%, but overdosing above 0.50 wt% creates surface blush on textured areas.
Post-Consumer Recyclate Let-Down Ratios in Non-Food Crates and Pallets
Blending HDPE 9410 with sorted post-consumer HDPE recyclate at 20 wt% to 40 wt% in non-food crates and industrial pallets requires a screw with a pineapple-type mixing section and a 24:1 L/D ratio to homogenize the lower-melt-viscosity PCR fraction. Melt pressure variation in the barrel zone after the screen pack increases from 10 bar to 35 bar when PCR content moves from 20 wt% to 40 wt%; this is monitored through hydraulic back pressure and a cushion stability limit of 2.5 mm. The virgin resin contributes consistent melt flow and lowers black speck contamination, but its high MI does not fully compensate for the loss in Charpy impact strength at -20 °C; notched impact under ISO 179-1/1eA may decrease from 5.5 kJ/m² to 4.0 kJ/m² depending on PCR source. For pallet stiffness, flexural modulus remains above 1,000 MPa at 30 wt% PCR when measured by ISO 178, provided the PCR fraction has no polypropylene contamination above 2 wt%; PP contamination causes surface splay and weld-line weakness at the pallet perimeter. Regulatory compliance for industrial packaging under REACH Regulation (EC) No 1907/2006 requires disclosure of substances of very high concern; sorted PCR must be tested for cadmium and lead below 100 mg/kg and PAHs below 10 mg/kg if the article may contact skin during manual handling. Published data for this specific HDPE 9410 and PCR blend ratio is limited, so melt filtration trials with 60 mesh to 80 mesh screen packs are required to establish the upper PCR addition limit without exceeding 20% reduction in notched impact.
Overcaps and snap-on dispensing closures for personal-care and household products are molded with flat or slightly domed top surfaces that require controlled gate blush and low residual stress. HDPE 9410 is processed at melt temperature 190 °C to 215 °C on 1,000 kN to 2,000 kN toggle machines with a cold runner and tunnel gates of 0.6 mm to 1.0 mm; the injection velocity profile is stepped with initial velocity 80 mm/s to 120 mm/s and final velocity 40 mm/s to 60 mm/s to prevent jetting on the undercut locking ring. A negative radius of 0.20 mm on the gate land combined with mold texturing VDI 24 to 27 hides gate blush without increasing surface roughness above 0.8 µm Ra. Dimensional checks after 48 h at 23 °C/50% RH show cap diameter variation less than 0.15 mm; overcaps with interference fit above 0.25 mm on the bottle neck may crack after insertion. Chemical compatibility for mild surfactants and ethanol-water systems up to 15% ethanol is acceptable under short-term patch testing; long-term contact with aggressive solvents or essential oils should be evaluated by weight gain and ESCR testing under ASTM D1693 condition A, because the grade’s relatively low molecular weight reduces environmental stress crack resistance compared with blow-molding HDPE. Polypropylene is a preferred alternative for higher-torque threaded closures in aggressive media, while HDPE 9410 remains used for low-stress overcaps where the continuous hoop stress is below 3 MPa.
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- Chevron Phillips Chemical HDPE 9410 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: sales8@ascent-chem.com.
Chevron Phillips Chemical HDPE 9410 is a high-density polyethylene copolymer supplied as pelletized resin for extrusion blow molding, rigid packaging, and selected heavy-wall sheet applications requiring elevated environmental stress crack resistance. The grade is based on an ethylene/1-hexene backbone. Published nominal values list a density of 0.954 g/cm³ when tested to ASTM D1505, a melt flow index of 0.30 g/10 min at 190 °C/2.16 kg by ASTM D1238, and a high-load melt index of 10.5 g/10 min at 190 °C/21.6 kg. The resulting melt flow ratio of approximately 35 indicates a broad or bimodal molecular weight distribution with a substantial high-molecular-mass fraction. That structure produces the melt strength, parison stability, and slow-crack-growth resistance required for household and industrial chemical bottles, automotive fluid containers, and agrochemical packaging. Unlike a high-melt-index injection moulding HDPE, HDPE 9410 is not suitable for thin-wall high-cavitation injection. Unlike a high-density stiff blow moulding grade, it trades a portion of flexural modulus and top-load resistance for improved environmental stress crack resistance and low-temperature ductility. The resin is normally transferred with dry air and stored in sealed silos at ambient temperature below 40 °C.
What Melt Rheology Parameters Restrict Screw Speed and Parison Dimensions?
The melt rheology of HDPE 9410 is shear-thinning under extrusion blow moulding conditions. The low-shear melt flow index of 0.30 g/10 min does not predict cycle output because the high-load value of 10.5 g/10 min permits acceptable flow once the parison is forced through the die gap. In grooved-barrel extruders, pressure-throughput remains stable until the melt temperature approaches the lower process boundary. The lower melt temperature limit of 190 °C is set by the onset of sharkskin or melt fracture in the die land region, appearing as transverse ridges on the parison outer surface. The upper melt temperature limit of 215 °C is set by parison sag. Parison length control becomes unstable when melt temperature exceeds the upper bound by more than 5 °C, especially in containers above 1 L capacity, because the zero-shear viscosity is no longer sufficient to support the hanging preform. The effective melt temperature window is therefore approximately 190–215 °C at the die entrance.
On production-scale equipment, the screw should be a barrier design with a length-to-diameter ratio between 24:1 and 30:1. A 90 mm extruder with a 30:1 L/D and a 3.0 L accumulator head generally maintains stable parison weight at screw speeds between 25 and 45 min−1, with head pressures in the range of 25 to 33 MPa. If head pressure exceeds 38 MPa because of screen-pack loading, melt contamination, or progressive wear behind the screw tip, parison length can drift by more than 3%, producing unacceptable bottle weight variation across multi-cavity moulds. The die gap is often set between 1.2 and 2.5 mm depending on target wall thickness; die land length-to-gap ratio should be maintained at 10:1 or higher to suppress melt fracture defects below visual detection.
| Property | Test method | Value | Unit |
|---|---|---|---|
| Melt flow index, 190 °C/2.16 kg | ASTM D1238-20 | 0.30 | g/10 min |
| High-load melt index, 190 °C/21.6 kg | ASTM D1238-20 | 10.5 | g/10 min |
| Density | ASTM D1505-18 | 0.954 | g/cm³ |
| Tensile strength at yield | ASTM D638-14 | 27.0 | MPa |
| Elongation at break | ASTM D638-14 | >600 | % |
| Flexural modulus | ASTM D790-17 | 1,380 | MPa |
| Hardness Shore D | ASTM D2240-15 | 63 | — |
| Vicat softening temperature | ASTM D1525-17 | 126 | °C |
| Brittleness temperature | ASTM D746-14 | < -75 | °C |
| Environmental stress crack resistance F50 | ASTM D1693-15, Condition B | >1,000 | h |
Pre-drying is generally unnecessary for as-supplied resin in hoppers at ambient conditions below 60% relative humidity. If pellets have been exposed to humid air for more than 72 h or stored in outdoor silos, hopper drying at 80 °C for 2 h with a desiccant bed dew point below −30 °C is recommended. Surface moisture on pellets appears as microvoids in the parison wall, reducing sidewall gloss and local burst strength. Drying temperatures above 100 °C should be avoided because pellet surface tacking and bridge blockage in the crystallizer hopper can occur. Regrind addition is commonly limited to 20–30 wt% for ESCR-critical containers. Post-consumer reclaim is not recommended unless its high-load melt index is within ±10% of the virgin grade and contamination has been validated by melt filtration at 200 µm or finer.
Bimodal Molecular Weight Distribution and Tie-Molecule Concentration in HDPE 9410
The measurable combined effect of broad molecular weight distribution and comonomer placement is an elevated concentration of tie molecules connecting crystalline lamellae. In slow crack growth, environmental stress cracking propagates through failure of those intercrystalline bridges. The 0.954 g/cm³ density places HDPE 9410 below the 0.958–0.965 g/cm³ range typical of high-stiffness HDPE grades, which reduces crystallite thickness and lamellar perfection. That microstructural shift increases the probability of tie-molecule formation but lowers flexural modulus to approximately 1,380 MPa by ASTM D790. The trade-off is direct: high-stiffness injection HDPE grades often show ESCR F50 values below 100 h under ASTM D1693 Condition B, whereas HDPE 9410 exceeds 1,000 h. For containers subjected to detergent, bleach, or aliphatic hydrocarbon exposure, this ESCR difference is more relevant than a 20–30% increase in modulus. However, the same microstructural feature limits the material’s use in applications requiring sustained top-load deformation below 0.5% at 60 °C; a higher-density grade should be evaluated when stacking load is the dominant design criterion.
In extrusion blow moulding of a 5 L multi-layer handleware container, the blow pin and flash pocket should be adjusted to prevent thin-out at the handle pinch. The mould parting line is typically relieved at 0.1–0.2 mm to prevent flash fracture. Blow air pressure for HDPE 9410 is usually set at 0.4–0.7 MPa; lower pressure produces incomplete bubble formation and chill marks, while excessive pressure can cause flash splitting. Mould cooling water is maintained at 10–25 °C with turbulent flow velocity above 1.0 m/s in cooling channels. Sidewall thickness above 1.8 mm is recommended for agrochemical containers expected to pass drop impact after filled storage at −20 °C for 48 h. Published data for this specific container configuration is limited; line-side trials are required to establish optimum parison programming and interlayer adhesion in multi-layer structures.
If Critical Container Performance Is Defined by Drop Impact at −20 °C, the Resin Selection Changes
Low-temperature drop-impact resistance is heavily influenced by weld-line and pinch-off quality, not solely by bulk polymer ductility. HDPE 9410 retains ductile deformation in many frozen-parison containers at −20 °C because the high-molecular-mass fraction acts as an energy-absorbing network. Comparative failure on a 1.2 m flat drop can still occur if the pinch-off is thick or if the mould was run below the minimum melt temperature. The use of ASTM D2463 drop impact and ISTA 1A conditioning provides reproducible acceptance criteria. A container designed for ambient detergent can fail when transferred to −20 °C without a proportional increase in corner radius and wall thickness. Higher-density HDPE grades may offer greater top-load stiffness but often show brittle fracture at the pinch-off and chime under the same drop conditions. Published data for this specific container geometry is limited; instrumented drop testing is required to determine whether the resin or the mould design controls the failure mode.
| Property | HDPE 9410 | Typical injection HDPE | Higher-density blow HDPE |
|---|---|---|---|
| Melt flow index, 190 °C/2.16 kg | 0.30 g/10 min | 20 g/10 min | 0.20 g/10 min |
| Density | 0.954 g/cm³ | 0.962 g/cm³ | 0.958 g/cm³ |
| ESCR F50, ASTM D1693 Condition B | >1,000 h | 3–10 h | 200 h |
| Flexural modulus, ASTM D790 | 1,380 MPa | 1,900 MPa | 1,520 MPa |
| Drop impact at −20 °C | Ductile, pinch-off-dependent | Brittle | Moderate ductile |
| Melt temperature window | 190–215 °C | 230–260 °C | 185–210 °C |
Compared with high-molecular-weight HDPE film grades of similar melt index, HDPE 9410 has a higher density and greater bottle wall stiffness but lower blown-film dart impact and a shorter frost-line height. Compared with a high-molecular-weight pipe grade of similar high-load melt index, HDPE 9410 is formulated for shorter residence time in blow moulding and is easier to purge on die changes; it is not qualified for hydrostatic design stress calculations. The material is therefore not a direct substitute for pipe, film, or injection-moulding grades unless the application is revalidated against the specific failure criteria of the finished part.
Selection between HDPE 9410 and a higher-density blow moulding grade should be based on the limiting acceptance test. If the specification requires a 20 L tight-head drum to pass 48 h of stacking at 40 °C with less than 2% deflection, a higher-density grade with flexural modulus above 1,500 MPa may be required, provided ESCR derating is acceptable. If the specification requires ESCR F50 above 1,000 h with detergent fill, HDPE 9410 is the more appropriate candidate. Regulatory compliance for olefin polymers under FDA 21 CFR 177.1520 applies to the base resin; specific pigments, processing aids, and reclaim streams must be evaluated separately. REACH and RoHS compliance must be confirmed from the lot-specific safety data sheet and the manufacturer’s product stewardship declaration rather than by reference to nominal property listings. Lot-to-lot variation in high-load melt index and density is an operational parameter; converters should request a certificate of analysis for each shipment when wall thickness variability is held below ±0.2 mm.
