| HS Code | 949996 |
| Polymer Type | High Density Polyethylene (HDPE) |
| Density | 0.955 g/cm³ |
| Melt Flow Rate | 0.3 g/10 min (190°C/2.16 kg) |
| Tensile Strength At Yield | 27.6 MPa |
| Tensile Strength At Break | 33.1 MPa |
| Elongation At Break | 600% |
| Flexural Modulus | 1.24 GPa |
| Izod Impact Strength Notched | 0.534 J/cm |
| Vicat Softening Point | 127 °C |
| Deflection Temperature At 0 46 Mpa | 75 °C |
| Brittleness Temperature | -70 °C |
| Hardness Shore D | 66 |
| Water Absorption | 0.01% |
| Dielectric Strength | 20 kV/mm |
| Thermal Conductivity | 0.42 W/m·K |
| Coefficient Of Linear Thermal Expansion | 1.2E-4 cm/cm/°C |
As an accredited Amco Plastic Materials HDPE 003955PZ factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 50 lb moisture-resistant, stackable industrial bags, each labeled Amco Plastic Materials HDPE 003955PZ for secure storage and handling. |
| Container Loading (20′ FCL) | Amco Plastic Materials HDPE 003955PZ loaded in 20′ FCL container; palletized bags, securely stowed, uniformly distributed, ensuring safe ocean transport. |
| Shipping | Amco Plastic Materials HDPE 003955PZ is a non-hazardous high-density polyethylene resin. Ship as general cargo; typically not regulated under DOT, IATA, or IMDG. Use clean, dry, closed containers. Protect from moisture, heat, and ignition sources. No UN number, hazard class, or packing group normally required. Consult SDS for final classification. |
| Storage | Store Amco Plastic Materials HDPE 003955PZ in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, flames, and strong oxidizers. Keep original containers sealed, labeled, and upright. Prevent moisture, dust, and contamination. Avoid prolonged UV exposure and excessive stacking. Use secondary containment where required. Follow the manufacturer’s SDS and local regulations for safe handling and storage. |
| Shelf Life | Shelf life is 24 months when stored in a cool, dry, well-ventilated area in original packaging, away from direct sunlight. |
Because extrusion blow moulding demands quantified parison sag, HDPE 003955PZ is first converted on accumulator-head machines with 80–120 mm screw diameters and 24:1–30:1 L/D ratios rather than reciprocating-screw shuttle lines when 20–60 L container volumes are targeted. The screw is a barrier design with a Maddock mixing section to disperse 2.0–3.0 wt% colour masterbatch. Melt temperature at the die is maintained between 180 °C and 220 °C. Head and die zones are held 5–10 °C below the extruder barrel profile to increase melt strength. Parison programming for a 25 L jerrycan body sets the die gap to 60–80 % of maximum at the pinch-off zone and 35–50 % at the body wall. Blow air pressure of 0.6–0.8 MPa is applied after the mould closes. Mould cooling water at 10–20 °C extracts heat through the flash-cooled outer skin. These settings target UN 1H1 and 1H2 packagings under Chapter 6.1 of the UN Recommendations. Drop testing is executed at -18 °C and 40 °C after conditioning. Published data for this specific Amco Plastic Materials grade configuration is limited for drop test outcomes; therefore plant trials must validate the 1.8 m drop height requirement for Packing Group II.
On single-station shuttle lines, the dominant defect is parison folding at the parting line when the die gap exceeds 1.2 mm and the part length exceeds 400 mm. The corrective sequence is to reduce mould open delay to 1.5 s and raise accumulator push-out speed to 0.35 m/s. No predrying is required below 60 % relative humidity; surface moisture at higher humidity requires a 70 °C hopper dryer for 2 h. End products include 25 L UN-rated jerrycans, 60 L open-head drums, 220 L drum liners, and automotive urea tanks when co-extruded with an EVOH barrier layer. Environmental stress crack resistance is checked under ASTM D1693-15 Condition B. Tensile yield stress is measured under ASTM D638-14. Melt flow rate is monitored per ISO 1133-1:2022 at 190 °C/2.16 kg; the grade-specific value is not stated in the application brief and must be confirmed by capillary rheometry per ISO 11443.
The limiting factor is not the base resin alone; it is the frozen-in orientation at the gate and the proportion of in-plant regrind. HDPE 003955PZ is injection-moulded on 1,200–1,600 tonne toggle clamps with hot runner valve gates of 0.8–1.2 mm diameter. Melt temperatures of 220–250 °C and mould temperatures of 15–35 °C are standard for 2.5 mm wall sections. Injection speed is set at 100–200 mm/s. Holding pressure is maintained at 60–80 MPa. Cooling time for a 600 × 400 mm crate is 18–30 s. The melt front length-to-thickness ratio above 350:1 increases the risk of flow hesitation at the corner pillars. Sequential valve gate timing prevents weld lines in side walls, while the hold pressure decay profile is adjusted to avoid sink marks under the top rim.
Regrind addition up to 15 % preserves low-temperature impact; regrind above 25 % shifts the notched Izod transition upward by 4–6 °C. Batch-to-batch variance appears as short-shot defects in corner pillars when clamp tonnage falls below 5 kN/cm² of projected area. End products include ventilated fruit crates, logistics totes, and automotive bins. Compliance requirements include EU No 10/2011 for crates in direct contact with unpackaged produce and FDA 21 CFR 177.1520 for olefin polymers. Mechanical acceptance is anchored to ASTM D638-14, ASTM D256-10, and ASTM D1693-15. Pallets produced from the same moulding cell are tested to ISO 8611.
In corrugated drainage and cable duct lines, HDPE 003955PZ is metered through grooved-feed single-screw extruders with 30:1–36:1 L/D ratios. Melt temperature at the corrugator die is held at 190–230 °C. The vacuum corrugator applies -0.02 to -0.04 MPa to form 300–1,500 mm diameter profiles under ASTM F2306 and AASHTO M294. A carbon black masterbatch is added at 2.0–2.5 wt% for outdoor UV resistance in cable duct and land drainage applications. The pipe wall thickness for a 100 mm corrugated profile typically falls between 0.8 mm and 1.2 mm. Line speed for 100 mm corrugated pipe is 8–12 m/min, with corrugator block temperature at 15–25 °C. These pipe structures are not assigned a PE100 pressure rating unless the grade is submitted to ISO 9080 long-term hydrostatic strength testing; without such testing, the application is limited to gravity drainage, cable protection, and stormwater retention. End products include corrugated land drainage pipe, telecommunication duct, and stormwater chambers. Published data for this specific configuration is limited.
Stalk height is the primary control variable for thin-gauge blown film produced from HDPE 003955PZ. The die gap is fixed at 1.0–1.5 mm. Blow-up ratio is set between 2:1 and 4:1. The frost line is positioned 8–12 die diameters above the air ring. The melt temperature remains 180–210 °C. Film thickness from 8 µm to 20 µm is processed on lines equipped with chilled air rings and internal bubble cooling. The addition of anti-block masterbatch is 1.0–2.0 wt%. Slip masterbatch is 0.5–1.0 wt%. Gels above 200 µm become visible defects below 15 µm thickness. The main process conflict is bubble instability when the stalk height is less than 5 die diameters; this increases gauge variation by approximately ±2 µm across the web.
End products include T-shirt bags, retail sacks, frozen food liners, and industrial can liners. Compliance for dry food contact is established under FDA 21 CFR 177.1520 and EU No 10/2011. Mechanical properties are verified using ASTM D882 for tensile, ASTM D1709 for dart drop, and ASTM D1922 for Elmendorf tear.
Rotational moulding of HDPE 003955PZ begins with ambient grinding of pellets to a 35-mesh powder with a bulk density of 0.34–0.40 g/cm³. Powder dry-flow is measured by ASTM D1895. The powder fraction retained on 50 mesh should remain below 5 %; coarse particles cause pinholes at the inner surface. Biaxial rotation ratios of 4:1 are typical for cylindrical tanks. Oven temperature is set at 260–300 °C. Peak internal air temperature is held at 220–240 °C for 2–4 minutes to complete densification. The mould is then cooled with forced air followed by water mist; internal air cooling is applied at the end to reduce warpage. Wall thickness is 3–6 mm for 200–2,000 L tanks.
Thermal oxidative degradation is the main boundary condition; extended oven dwell above 300 °C creates surface oxidation and reduces impact. End products include agricultural water tanks, chemical dosing tanks, and industrial bins. Polyethylene upright storage tanks are supplied against ASTM D1998. Food-contact water tanks require FDA 21 CFR 177.1520 and EU No 10/2011. Incompatibility is noted with strong oxidizing chemicals unless the tank wall is stabilized for the specific chemical exposure.
| Conversion route | Governing standard | Test method or clause |
|---|---|---|
| Extrusion blow moulding | UN Recommendations Chapter 6.1 | Drop test at -18 °C and 40 °C |
| Injection moulding | FDA 21 CFR 177.1520; EU No 10/2011 | ASTM D638-14; ASTM D256-10; ASTM D1693-15 |
| Pipe extrusion | ASTM F2306; AASHTO M294; EN 13476-3 | Ring stiffness; ISO 9080 for pressure rating |
| Blown film | FDA 21 CFR 177.1520; EU No 10/2011 | ASTM D882; ASTM D1709; ASTM D1922 |
| Rotational moulding | ASTM D1998; FDA 21 CFR 177.1520 | ASTM D1895 dry flow |
| Sheet thermoforming | ISO 8611 | ASTM D638-14 |
Sheet extrusion for returnable dunnage uses a 150 mm single-screw line with melt temperatures of 200–230 °C and polishing stack roll temperatures of 70–90 °C to produce 2.0–6.0 mm sheet; twin-sheet thermoforming then welds two sheets to ISO 8611 pallet dimensions. Regrind ratio is held at 20 % maximum. End products include thermoformed trays, twin-sheet pallets, and material handling dunnage.
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Amco Plastic Materials HDPE 003955PZ is identified in supplier documentation as a high-density polyethylene resin. Publicly available technical data for this exact code are limited; therefore, the model designation should be treated as a lot-traceability and quality-control identifier rather than as a standard ASTM or ISO grade classification. The material is supplied as pelletized feedstock for evaluation in injection molding, profile extrusion, blow molding, and compounding operations. Specification values must be taken from the lot certificate of analysis or from a qualified pre-production trial. Incoming identity verification by Fourier-transform infrared spectroscopy against a reference library and oxidation induction time determination by ASTM D3895 are appropriate first-line checks. If the CoA is unavailable, 003955PZ can be provisionally bounded by the behavior of commercial HDPE homopolymer and HDPE copolymer families, but no final process parameter should be fixed without lot-specific data.
The differentiation of 003955PZ from other HDPE products is operationally defined by five parameters: nominal density, melt mass-flow rate at 190°C/2.16 kg, molecular weight distribution, comonomer type if present, and additive package. General-purpose HDPE homopolymer grades typically exhibit density in the range 0.940–0.965 g/cm³ measured by ASTM D1505, while butene- or hexene-modified HDPE copolymers may show density below 0.950 g/cm³ and improved environmental stress crack resistance. If the CoA for 003955PZ reports density above 0.955 g/cm³ and a narrow molecular weight distribution, the material should be handled as a high-stiffness, moderate-impact resin for rigid containers, crates, and industrial components. If the melt flow rate falls below 1 g/10 min, extrusion and blow molding are favored because shear viscosity is high and parison stability is generally better. If the melt flow rate is between 8 g/10 min and 30 g/10 min, thin-wall injection molding becomes feasible, but low-temperature impact and environmental stress crack resistance may decline. Published data for this specific configuration is limited, so these classifications must be confirmed against the lot sheet.
Compared with linear low-density polyethylene, HDPE 003955PZ would be expected to provide higher flexural modulus and lower permeability, but lower dart impact and lower clarity. Compared with polypropylene homopolymer, HDPE has a lower melting temperature and better low-temperature impact, but lower continuous-use temperature and lower stiffness. Compared with HDPE copolymer blow-molding grades, a homopolymer-type 003955PZ may display higher shrinkage and lower ESCR. Actual shrinkage should be measured per ASTM D955 on a standardized plaque or end-use tool because mold geometry, part thickness, and cooling rate strongly affect final dimensions. For applications requiring controlled warpage or faster crystallization, nucleated HDPE grades may be preferred; if 003955PZ is a natural non-nucleated grade, part flatness may require adjustment of gate location, mold temperature, and cooling circuit design. These comparative statements are generic to HDPE and are not a substitute for a supplier specification for 003955PZ.
| Parameter | Test standard | HDPE homopolymer injection | HDPE copolymer blow molding | Bimodal HDPE film | 003955PZ control |
|---|---|---|---|---|---|
| Density | ASTM D1505 | 0.955–0.965 g/cm³ | 0.945–0.955 g/cm³ | 0.948–0.960 g/cm³ | Lot CoA required |
| Melt mass-flow rate | ISO 1133-1:2022 | 4–30 g/10 min | 0.2–1.5 g/10 min | 0.5–20 g/10 min | Lot CoA required |
| Tensile yield stress | ASTM D638-14 | 23–31 MPa | 18–26 MPa | 22–30 MPa | Lot CoA required |
| Flexural modulus | ASTM D790-17 | 1000–1550 MPa | 700–1000 MPa | 900–1300 MPa | Lot CoA required |
| Notched Izod impact, 23°C | ASTM D256-23 | 20–60 J/m | NB–200 J/m | 30–100 J/m | Lot CoA required |
| ESCR, 100% Igepal | ASTM D1693 | 3–50 h | >300 h | 50–200 h | Lot CoA required |
| Vicat softening temperature | ASTM D1525 | 120–128°C | 115–125°C | 118–127°C | Lot CoA required |
Processing behavior for an HDPE grade of unknown exact MFR should be established with a capillary rheometer before production. A screw speed range of 50–150 rpm on a 40:1 L/D corotating twin-screw extruder can generate shear heating that shifts melt temperature; melt temperature must be measured at the die, not inferred from barrel set points. On injection molding machines with clamp force from 800 kN to 25,000 kN, HDPE parts are commonly filled at injection pressures between 50 MPa and 120 MPa. If pressure drop exceeds the machine limit in thin-wall tools, higher melt flow rate or higher melt temperature may be required. The safe operating window for HDPE is bounded by oxidation onset; melt residence time above 250°C should not exceed 5 min unless the antioxidant package is confirmed by oxidation induction time.
Because HDPE 003955PZ may enter a production site without a complete technical datasheet, incoming inspection should address polymer identity, melt flow rate, density, mechanical properties, thermal stability, and contamination. Melt mass-flow rate is determined at 190°C under a 2.16 kg load following ISO 1133-1:2022 or ASTM D1238-20. Density is measured on compression-molded specimens according to ASTM D1505 or ISO 1183-1:2019. Tensile yield stress and elongation at break are generated on Type IV specimens per ASTM D638-14 or ISO 527-2; flexural modulus is obtained by ASTM D790-17. Notched Izod impact strength is determined at 23°C and, for low-temperature applications, at -30°C using ASTM D256-23. Environmental stress crack resistance is tested with ASTM D1693 using 100% Igepal CO-630 at 50°C; the method reports F50 values that are geometry-sensitive and should not be compared across different specimen thicknesses. Ash content by ASTM D5630 is used to detect fillers or inorganic residues. If the part is colored, pigment dispersion can be assessed by ASTM D5596 or reflected-light microscopy.
These controls are appropriate for any HDPE resin, not only 003955PZ. If the supplier CoA already reports these parameters and the values are within approved limits, duplicate internal testing may be reduced to identity by melt index and density. However, batch-to-batch variation in additive package, comonomer, or molecular weight distribution may remain undetected by melt flow rate alone. A capillary rheology check at apparent shear rates of 100 s⁻¹, 500 s⁻¹, and 1000 s⁻¹ is more discriminating and should be used for mold-filling qualification.
In multicavity injection molding, equal melt flow rate does not guarantee equal fill or pack behavior. Viscosity curves generated by ASTM D3835 at 190°C can separate lots with different molecular weight distribution. A lot with lower high-shear viscosity may permit shorter fill time but can also produce flash at parting lines; a lot with higher low-shear viscosity may increase screw recovery time and melt pressure. For 003955PZ, if a supplier’s internal control limits are wider than ±15% on high-load melt flow rate or capillary viscosity, production trials should be repeated before mold transfer. On a 24:1 to 30:1 L/D single-screw extruder with a compression ratio of 2.5:1 to 3.5:1, melt pressure at the adapter should be logged continuously; a drift of more than 0.5 MPa at constant screw speed and die geometry indicates feed or rheology change. Mold-filling simulation should use a Cross-WLF or Bird-Carreau viscosity model fitted to measured capillary data; a single MFR point is insufficient for predicting thin-wall filling pressure. For blow molding, extruder head pressure, parison swell, and die swell measurements are preferred over MFR for judging processability.
On production-scale extrusion blow molding lines, HDPE parison sag and melt fracture occur when melt temperature is too high or too low. If 003955PZ is evaluated for containers with wall thickness below 0.5 mm, die gap and mandrel temperature must be matched to the resin’s melt strength. Early trials often show thickness variation at the pinch-off if melt temperature exceeds the supplier’s recommended range by more than 10°C. On injection molding lines with clamp force above 15,000 kN, gate blush and jetting can appear when injection speed is set too high for the material’s viscosity; reducing injection velocity or increasing melt temperature typically removes the cosmetic defect. These equipment-specific observations are based on general HDPE processing and should be verified during a pre-production trial.
No statement in this document replaces a written supplier compliance certification. For global supply chains, HDPE 003955PZ should be accompanied by a safety data sheet and, where relevant, a regulatory information letter. The following table summarizes the documentation often required for olefin polymers; each row must be confirmed for the specific grade and destination market.
| Framework | Standard or regulation | Required documentation | Relevance to HDPE 003955PZ |
|---|---|---|---|
| EU REACH | Regulation (EC) No 1907/2006 | SDS, SVHC confirmation <0.1% w/w | Required for EU placement |
| US food contact | FDA 21 CFR 177.1520 | Olefin polymer compliance, migration data | Only if food-contact use is declared |
| RoHS | Directive 2011/65/EU | Pb, Cd, Hg, Cr⁶⁺, PBB, PBDE declaration | Rare for unfilled HDPE |
| US packaging heavy metals | CONEG TPCH | Sum of Pb, Cd, Hg, Cr⁶⁺ <100 ppm | Rigid packaging applications |
| Plastics classification | ASTM D4976-23 | HDPE molding and extrusion classification | Grade classification |
| Medical packaging | USP <661.1> | Plastic packaging character tests | Only if medical packaging is intended |
| Weathering | ASTM G155, ISO 4892-2 | Accelerated weathering data | Outdoor service only |
Storage and handling boundaries apply irrespective of product code. HDPE is not hygroscopic; drying is generally unnecessary unless the pellets have visible surface moisture, in which case 80°C for 2 h in a desiccant dryer is sufficient. Sustained processing above 280°C can initiate thermo-oxidative degradation even in stabilized grades; therefore melt residence time and hot-runner temperature must be controlled. Blending with transition metal stearates, pro-oxidant additives, or certain flame-retardant systems can reduce oxidation induction time and produce discoloration. For outdoor parts, UV stabilization must be verified by accelerated weathering according to ASTM G155 or ISO 4892-2; published data specific to 003955PZ is limited, so extended outdoor service requires end-use testing. Regrind content above 30 wt% may shift viscosity and reduce environmental stress crack resistance, especially if the regrind has undergone multiple heat histories. The use of 003955PZ in potable water, pharmaceutical packaging, or food-contact applications is permissible only after migration and sensory testing under the applicable national regulation.
