| HS Code | 254359 |
| Polymer Type | High Density Polyethylene (HDPE) |
| Form | Granular |
| Processing Temperature C | 180-220 |
| Mold Shrinkage Percent | 2-4 |
As an accredited Amco Plastic Materials HDPE 011 GRANULAR factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amco Plastic Materials HDPE 011 GRANULAR is typically supplied in 25 kg polyethylene-lined multiwall bags, palletized and shrink-wrapped for shipment. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Amco Plastic Materials HDPE 011 Granular in 25 kg bags, palletized, shrink-wrapped, and securely strapped. |
| Shipping | Amco Plastic Materials HDPE 011 GRANULAR is a non-hazardous, non-DG high-density polyethylene shipped as solid granules. Transport in clean, dry, sealed bags, sacks, or containers. Protect from moisture, heat, and contamination. No UN number, hazard class, or special labeling required. Handle as general cargo under normal freight conditions. |
| Storage | Store Amco Plastic Materials HDPE 011 GRANULAR in a cool, dry, well-ventilated warehouse away from direct sunlight, heat, flames, and strong oxidizers. Keep bags or containers tightly closed, off the floor on pallets, and protected from moisture, contamination, and physical damage. Minimize dust generation; use grounding and avoid static discharge. Follow local regulations and SDS recommendations. |
| Shelf Life | Stable under normal storage conditions; indefinite shelf life if kept cool, dry, sealed, and away from direct sunlight. |
Amco Plastic Materials HDPE 011 GRANULAR is an extrusion-grade high-density polyethylene feedstock supplied in granular form. The downstream routes described below are limited to sectors in which low-melt-index HDPE with elevated extensional viscosity and long-term environmental stress crack resistance governs equipment selection. Where the certificate of analysis reports a melt flow rate in the extrusion-grade window of 0.10–0.30 g/10 min under ASTM D1238-20 at 190 °C with 2.16 kg, the following processing parameters and formulation ratios are technically applicable; lot-specific molecular weight distribution, density, and additive package must be confirmed before locking barrel profiles, die gaps, and regrind ratios.
Industrial blow-moulded containers produced from this granular feedstock operate in a processing window where parison hang time and die swell control wall-thickness distribution more than melt temperature alone. On shuttle and accumulator-head machines with 24:1–30:1 L/D barrier screws, barrel profiles from 170 °C at the feed throat to 210 °C at the die are maintained; die temperatures are held at 190–205 °C to stabilize parison diameter. Blow-up ratio is set between 2.5:1 and 3.2:1, and parison programming is used to offset parison swell. The formulation convention starts from a neat resin base of 100 phr HDPE 011 granules, with hindered phenolic antioxidant at 0.05–0.10 phr, phosphite processing stabilizer at 0.05–0.10 phr, acid scavenger at 0.02–0.05 phr, and optional UV stabilizer for outdoor-stored articles at 0.20–0.50 phr. Addition of colour masterbatch is limited to 2–4 wt% of total feed to avoid ESCR loss. Compliance for dangerous goods packaging relies on UN Model Regulations Chapter 6.1 drop and stack testing; food-contact containers are validated under FDA 21 CFR 177.1520(c) and EU Regulation 10/2011 Annex I, with overall migration below 10 mg/dm² measured by EN 1186-1. Mechanical verification uses ASTM D638-22 tensile yield, ASTM D1693-21 Igepal ESCR, and ASTM D256-23 Izod impact at −40 °C. Terminal products include 25 L UN-rated jerrycans, 30 L wide-mouth pails, 200 L tight-head and open-head drums, 1,000 L intermediate bulk container inner bottles, and automotive washer-fluid containers.
In blown film lines, the relationship between extruder back pressure and bubble stability becomes more sensitive when the resin has a low melt index and narrow molecular-weight distribution. Spiral mandrel dies with diameters of 100–350 mm and die gaps of 1.0–2.2 mm are used; blow-up ratio is maintained at 3.0:1–5.0:1, and high-stalk bubble configurations are preferred to minimize film blocking. Barrel temperatures from 180 °C to 230 °C and die temperatures of 220–225 °C are typical; frost line height is held at 300–600 mm from the die face with cooling air at 15–25 °C. Formulation addition ratios are: HDPE 011 granules at 100 phr, erucamide slip agent at 0.03–0.06 phr, synthetic silica antiblock at 0.05–0.15 phr, and fluoroelastomer processing aid at 0.02–0.04 phr. Exceeding 0.06 phr processing aid results in die lip build-up and film streaking. Food-contact film is governed by FDA 21 CFR 177.1520(a)(3)(i) and EU Regulation 10/2011 Annex I, with specific migration evaluated under EN 1186-1. Mechanical properties are tested by ASTM D882-18, ASTM D1709-22 dart drop Method A, ASTM D1922-21 Elmendorf tear, and ASTM D1003-21 haze. Terminal products include T-shirt grocery sacks, can liners, industrial liners, frozen-food bags, agricultural mulch film, and overwrap for nonwoven hygiene packaging.
Pressure pipe extrusion lines processing virgin low-melt-index HDPE granules require a single-screw extruder with 30:1–36:1 L/D, water-cooled grooved feed section, and a spiral mandrel or basket die with land-length ratio of 10:1–15:1. Barrel profiles from 180 °C to 220 °C are held to prevent premature gel formation; vacuum calibration and cooling water temperatures of 15–20 °C are used on the haul-off. The formulation addition ratio is based on 100 phr HDPE 011 granules, with carbon black masterbatch at 2.0–2.5 wt% for black potable water and gas pipe, or colour masterbatch at 1–3 wt% for blue, yellow, or non-black pipe; secondary antioxidant is used at 0.10–0.30 phr only when downstream regrind collection is unavailable. Calcium carbonate filler is not added in pressure-rated formulations. Potable water pipe must conform to ISO 4427-2, EN 12201-2, AS/NZS 4131, and ASTM D3350 cell classification PE445574C/E or equivalent. Gas distribution pipe is assessed under ISO 4437-2. Long-term hydrostatic strength is evaluated by ISO 9080 and ASTM D2837.
| Compliance parameter | Requirement | Test method designation |
|---|---|---|
| Long-term hydrostatic strength at 20 °C, 50 years | ≥10 MPa | ISO 9080 |
| Minimum required strength classification | PE100 | ISO 12162 |
| Tensile elongation at break | ≥350% | ISO 6259-1 |
| Density | 0.930–0.965 g/cm³ | ISO 1183-1 |
Terminal products include potable water mains from 20 mm to 1,200 mm, gas distribution pipes from 20 mm to 400 mm, industrial slurry lines, and conduit for district heating jackets. Hydrostatic design basis validation for the specific grade is required because published material classification may be limited until the processor completes ISO 9080 testing on the actual pipe wall.
Once parison wall thickness exceeds 6 mm at die exit, the blow moulding line enters a gravity-limited regime in which parison sag and diameter recovery interact with clamp tonnage and pinch-off geometry. Automotive fuel tank lines use accumulator-head or reciprocating-screw multilayer blow moulding machines with clamp forces from 250 t to 400 t; if the melt flow rate of the HDPE feedstock shifts by more than 0.05 g/10 min, die swell changes and the parison programmer must be re-slaved to the wall-thickness profile. The formulation addition ratio for a six-layer or seven-layer tank starts from 100 phr HDPE 011 granules in the outer and inner layers, carbon black masterbatch at 2.0–2.5 wt%, heat stabilizer at 0.10–0.30 phr, and acid scavenger at 0.05–0.10 phr. Amine-based additives are incompatible with tie-layer adhesives used with EVOH barrier layers because premature crosslinking degrades interlayer bond strength. Regrind is introduced at 20–40 wt% as an internal layer only after ESCR retention is validated. The co-extrusion head maintains layer order of HDPE outer/regrind/tie/EVOH/tie/regrind/HDPE inner, with EVOH at 1–3 vol% of total wall thickness. Post-mould fluorination or sulfonation reduces hydrocarbon permeation to 0.1–0.5 g/m²·day at 40 °C depending on wall thickness and barrier layer continuity. Compliance validation includes ECE R34-03, EPA 40 CFR Part 86, CARB EVAP, and material tests under ASTM D638-22, ASTM D790-17, ASTM D1693-21, and ASTM D256-23 at −40 °C. Terminal products are 40–90 L automotive fuel tanks, SCR urea tanks, and light-duty vehicle tanks. Published data for this specific configuration is limited; full-scale validation on the actual accumulator head and pinch-off tooling is required before serial production.
In thermoforming operations, the conversion of HDPE 011 granules into reusable dunnage and automotive interior trays begins with sheet extrusion through a slit die with a gap of 2.0–3.5 mm and a three-roll stack held at 75–90 °C. The sheet is reheated to 150–170 °C surface temperature and formed with plug assist at 100–300 mm/s into moulds at 60–80 °C. Formulation addition ratios for this sector are set at 100 phr HDPE 011 granules, nucleating agent at 0.03–0.10 phr, colour masterbatch at 1–3 wt%, and talc only where flexural modulus above 1,200 MPa is required at 5–15 wt%. Talc loadings above 20 wt% reduce melt strength and produce corner thinning during plug-assisted forming. Automotive interior applications require compliance with EU Directive 2000/53/EC end-of-life vehicle requirements, REACH SVHC screening, and volatile emission testing under VDA 270 or VDA 278. Mechanical specifications reference ASTM D638-22, ASTM D790-17, ASTM D648-18 under 0.455 MPa, and ASTM D256-23 Izod impact at −30 °C. Terminal products include automotive trunk trim panels, reusable logistics trays, battery trays, protective dunnage, and appliance internal panels.
The substitution of recycled post-consumer HDPE with virgin HDPE 011 granules in corrugated drainage pipe lines alters melt pressure before the die by 10–20% at constant screw speed because the granular feedstock has a narrower molecular-weight distribution and lower contamination-induced shear heating. The corrugator vacuum forming step requires the melt to retain sufficient strength at 190–210 °C against internal air pressure of 0.1–0.4 bar. The single-screw extruder is specified with 24:1–30:1 L/D, die gap of 0.8–1.2 mm, and corrugator mould blocks at 40–60 °C under vacuum of 0.06–0.08 MPa. The formulation addition ratio for virgin corrugated pipe is 100 phr HDPE 011 granules, external carbon black masterbatch at 2.0–2.5 wt%, and antioxidant top-up at 0.10–0.20 phr only when no regrind stream is present. Lubricant level must remain below 0.05 phr because higher amounts cause irregular vacuum-formed corrugation depth. Compliance for gravity-flow drainage and culverts includes ASTM F2306/F2306M, ASTM F2648/F2648M, AASHTO M294, and EN 13476-2; ring stiffness classes SN4 and SN8 are verified by ISO 9969. UV resistance for outdoor stockpiling is evaluated under ASTM D2565 or ISO 4892-2. Terminal products include twin-wall stormwater culverts, agricultural drainage pipes, cable ducts, and septic field lines.
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Amco Plastic Materials HDPE 011 GRANULAR is a high-density polyethylene feedstock supplied in granular form rather than as cylindrical pellets. The alphanumeric designation is a supplier model code, not an ISO 17855-1:2014 designation system code. The suffix 011 should not be interpreted as a melt flow rate of 0.11 g/10 min unless the lot certificate of analysis expressly correlates the two. Incoming material control therefore begins with verification of density by ISO 1183-1:2019, melt flow rate by ISO 1133-1:2022 at 190 °C/2.16 kg, water content by ISO 15512:2019, ash content by ISO 3451-1:2019, and bulk density by ISO 60:1977. Generic high-density polyethylene datasheet values are not acceptable release criteria for this product because the granular source may be post-industrial or compounded and may vary between lots.
| Parameter | Method | Inspection objective |
|---|---|---|
| Density | ISO 1183-1:2019 | Confirm high-density class and detect lower-density polyolefin contamination |
| Melt flow rate | ISO 1133-1:2022 at 190 °C/2.16 kg | Establish high-molecular-weight extrusion range or injection-molding range |
| Water content | ISO 15512:2019 | Prevent surface splay and hydrolytic degradation in downstream extrusion |
| Ash content | ISO 3451-1:2019 | Detect filler, pigment, metal, or regrind contamination |
| Bulk density | ISO 60:1977 | Set hopper, vacuum loader, and gravimetric feeder calibration |
Because granular resin has a lower bulk density than pelletized product, a volumetric feeder set for pellets will underpredict mass throughput. Gravimetric feeders should be calibrated using the actual bulk density determined by ISO 60:1977. In low-temperature storage, the angle of repose of granulated HDPE can exceed 35°, so hopper level sensors should be offset to account for cone formation rather than a flat material surface. Dust formation during vacuum transfer is a critical difference from pelletized HDPE. A cyclone separator with a 20 mm-mesh screen at the receiver reduces fines carryover into the vacuum pump and protects vent-line filters. The transfer line should use smooth-walled stainless-steel elbows; sharp bends increase granule fracture and create low-melt fragments that can survive the screw channel.
In twin-screw compounding, the solids-conveying zone is the primary constraint for Amco Plastic Materials HDPE 011 GRANULAR. With a co-rotating twin-screw extruder of 40 mm screw diameter and 36:1 L/D, granular feed can be drawn into the screw flights more readily than flat pellets when the feed throat is cooled below 40 °C. However, the smaller particle-size distribution increases the risk of fines accumulation in the screw channel. A side feeder may be required when the formulation includes more than 10 wt% of powdery additives. The specific energy input required to melt a granule bed is not automatically lower than a pellet bed; it depends on particle-size uniformity. Broad granule-size distributions create localised starvation in the first kneading block and can generate melt temperature differences exceeding 5 °C across the barrel perimeter.
Single-screw extrusion of granular HDPE benefits from a compression ratio between 3.0:1 and 4.0:1, with a metering depth of 3 mm to 4 mm. The feed-zone depth can be increased by 0.5 mm relative to a pellet screw design to accommodate lower bulk density, but excessive depth reduces melting efficiency. On a 75 mm single-screw extruder with 30:1 L/D, output may become transport-limited if the screw speed is raised above 80 rpm without a grooved feed section. Melt filtration is mandatory for the granular form. A 60/120/60 mesh screen pack protects downstream gear pumps and dies from unmelted granule fragments and incidental metal contamination. The head-pressure increase should be logged; an increment above 1.0 MPa over baseline indicates screen blinding and requires replacement before gel particles enter the product.
Above 220 °C, the melt residence time must be controlled to limit hydroperoxide formation and molecular weight reduction. Amco Plastic Materials HDPE 011 GRANULAR should not be held at melt temperatures above 220 °C for longer than 5 min unless purge procedures are validated by melt flow stability tests. At temperatures above 240 °C, the onset of oxidized gels and cross-linked particles accelerates; the extruder should be purged with a stable carrier resin before shutdown. Published data specific to this product’s thermal stability is limited, so melt flow rate drift across three consecutive barrel residence times should be measured and recorded during process acceptance.
If Amco Plastic Materials HDPE 011 GRANULAR is considered as a replacement for a pelletized blow molding high-density polyethylene, the evaluation must compare the measured melt flow rate with the incumbent grade under identical ISO 1133-1:2022 conditions. If the certificate of analysis indicates a melt flow rate near 0.11 g/10 min, the material may provide longer parison hang time than a pelletized resin with a melt flow rate above 0.3 g/10 min. However, granular form alone does not guarantee high melt strength. Die swell and shear viscosity should be measured on the actual extrusion blow molding machine at constant die temperature and constant screw speed. A capillary rheometry trace in the shear range from 10 s⁻¹ to 1000 s⁻¹ is recommended before extrusion tooling changes are made. High-molecular-weight HDPE often shows die swell between 1.2 and 1.8, but the value is die-gap dependent and must be confirmed on the production die.
Compared with injection-molding high-density polyethylene grades with melt flow rates above 4.0 g/10 min, the 011 grade, if confirmed as a high-molecular-weight grade, has lower flow and higher melt strength. This makes it less suitable for thin-walled injection parts and more suitable for thick-walled containers, large bottles, and industrial articles. Compared with bimodal HDPE pipe resins, the molecular weight distribution and comonomer placement may be different; environmental stress-cracking resistance by ASTM D1693-21 or ISO 22088-3:2009 must be established before chemical packaging applications. When published data for this specific product configuration is limited, production-scale trials are required rather than comparison to a generic HDPE datasheet.
| Parameter | HDPE 011 GRANULAR | Pelletized extrusion HDPE | Injection-molding HDPE |
|---|---|---|---|
| Bulk density | lower; determine by ISO 60:1977 | higher | higher |
| Fines generation | higher without controlled handling | lower | lower |
| Melt flow rate range | must be confirmed by ISO 1133-1:2022 | not necessarily equivalent | typically above 4.0 g/10 min |
| Melt strength | potentially high when MFR is low | high in blow molding grades | low |
| Regulatory evidence | lot-specific documentation required | grade-specific | grade-specific |
A direct substitution from pelletized high-molecular-weight HDPE to granular HDPE 011 can alter screw recovery time and output because the bulk density and particle shape differ at the feed screw. Comparative output must be logged under constant screw speed, back pressure, and barrel temperature profile on a 75 mm single-screw extruder with 30:1 L/D. If long-term hydrostatic strength is required for pressure pipe, the resin must be qualified using ISO 9080:2022 or ASTM D2837-22; short-term tensile data are not sufficient for pressure-rated pipe substitution. These differences are process-critical and cannot be inferred from a standard melt flow rate comparison alone.
Regulatory compliance statements must be confirmed by the supplier. For food-contact applications, the resin should be covered by a valid regulatory mechanism such as 21 CFR 177.1520 in the United States or EU 10/2011 as amended. The presence of recycled content or processing aids can affect the final compliance status. For electrical or automotive applications, verification of heavy metal restrictions under RoHS 2011/65/EU and REACH 1907/2006/EC is required from lot documentation rather than from generic HDPE assumptions. If recycled content is declared, melt flow rate stability across 5 consecutive extrusion cycles is advised to detect lot instability before commercial molding.
Amco Plastic Materials HDPE 011 GRANULAR should be stored in closed silos or lined gaylords below 60% relative humidity. Because polyethylene is hydrophobic, bulk moisture absorption is low, but condensation on granule surfaces can occur when cold material is moved into a warmer processing area. Pre-drying at 70 °C for 2 h is required only when surface moisture is visible or when water content by ISO 15512:2019 exceeds 0.05 wt%. The material should not be stored near diesel exhaust or solvent vapours because high-density polyethylene can absorb low-molecular-weight hydrocarbons, leading to odour and taste defects in extruded parts. Do not combine the resin with amine-based additives without documented compatibility, as alkaline species can accelerate oxidative degradation in the melt at processing temperatures.
Contamination from foreign polymers is a primary boundary. Even 2 wt% of low-density polyethylene or polypropylene can reduce stiffness and alter opacity in thin-walled blow molded parts. Granular feedstock should be passed through a magnetic grate before the feed throat; metallic contamination above 0.1 mm can damage screw flights and check rings in injection molding machines. In compounding lines, a vacuum pump inlet filter of 5 µm protects the melt degassing system from fine dust carried out of the feed zone.
For sheet extrusion in the 0.8 mm to 3.0 mm thickness range, roll-stack temperatures are set lower than for LDPE because high-density polyethylene crystallizes quickly. The polished-roll temperature should be adjusted to maintain a clear melt bank and to prevent chill-roll release failures. If HDPE 011 GRANULAR is used for corrugated pipe with a profiled die, the extruder output should be matched to haul-off speed to avoid wall-thickness draw-down variation exceeding 5%. Published data for this specific product in corrugated pipe applications is limited; therefore, start-up should include a full gauge audit of the first 50 m of profile after each granule lot change.
