| HS Code | 240484 |
| Density | 0.958 g/cm³ |
| Melt Index 190 C 2 16 Kg | 0.35 g/10 min |
| Tensile Strength At Yield | 26 MPa |
| Tensile Strength At Break | 30 MPa |
| Elongation At Break | 600% |
| Flexural Modulus | 1200 MPa |
| Vicat Softening Point | 125 °C |
| Heat Deflection Temperature At 0 45 Mpa | 75 °C |
| Brittleness Temperature | -70 °C |
| Environmental Stress Crack Resistance Escr | >1000 h |
| Shore D Hardness | 65 |
| Melting Point | 130 °C |
As an accredited Bayport Polymers (Baystar) HDPE 7195 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Bayport Polymers (Baystar) HDPE 7195 is supplied in 25 kg polyethylene bags, 40 bags per 1,000 kg pallet. |
| Container Loading (20′ FCL) | 20′ FCL loaded with palletized 25 kg bags of Bayport Polymers (Baystar) HDPE 7195, shrink-wrapped, secured for ocean shipment. |
| Shipping | Bayport Polymers (Baystar) HDPE 7195 is shipped as free-flowing, non-hazardous polyethylene pellets. It is typically packaged in 25 kg bags, 1,000 kg bulk bags, or bulk trucks/railcars. Store in a dry, ventilated area away from heat and sunlight. Follow supplier SDS and local transport rules. |
| Storage | Store Bayport Polymers (Baystar) HDPE 7195 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, flames, and strong oxidizers. Keep original containers or bags closed, clean, and palletized off the floor. Prevent moisture, dust, and contamination. Avoid excessive stacking and prolonged UV exposure. Follow SDS and local regulations; use first-in, first-out stock rotation. |
| Shelf Life | HDPE 7195 typical shelf life: 24 months when stored cool, dry, sealed, and protected from sunlight, moisture, and contaminants. |
Processing of Baystar HDPE 7195 in extrusion blow moulding lines is constrained by a nominal melt index of 0.95 g/10 min (ASTM D1238-20, 190°C/2.16 kg) and a nominal density of 0.953 g/cm³ (ASTM D1505-18), which place the grade in the low-flow, high-melt-strength band used for industrial packaging that must survive stacking, drop impact, and environmental stress cracking. On a single-station shuttle blow moulding machine equipped with a 65 mm grooved-feed barrier screw at 24:1 L/D, barrel setpoints are commonly profiled from 180°C at the feed throat to 215°C at the die head, with the head and accumulator held at 200–215°C and the blow mould cooled to 15–25°C. Parison length controllers must compensate for sag velocities that vary between 2 mm/s and 5 mm/s at a 200 g shot mass; die gaps of 1.5 mm to 2.5 mm usually produce swell ratios in the 35–50% range, though grade-specific swell must be verified on-line by measuring the pin diameter against the die diameter after a 30-min equilibrium run. Blow air pressure is maintained at 0.5–0.7 MPa with a pre-blow delay of 0.2–0.5 s to redistribute wall thickness into pinch-off and handle areas, while mould venting of 0.02–0.05 mm prevents trapped-air defects at the mould parting line. For outdoor-stored jerry cans and open-head drums, a 2.0–3.0 wt% carbon black masterbatch and 0.1–0.2 wt% hindered amine light stabilizer are added at the feed throat, with the masterbatch carrier selected from a compatible HDPE to avoid gel formation at the die land. The low melt index intensifies shear heating in the die land; immersion thermocouple readings at the head should not exceed the setpoint by more than ±3°C, because thermal degradation can shift the parison swell and create gel particles in the clamp tail. End products include 5 L to 20 L stackable jerry cans, UN 1H1 open-head drums, and industrial detergent containers where environmental stress-crack resistance is benchmarked under ASTM D1693-15 Condition B and static stack-load testing is conducted according to ASTM D4577-19. For food-contact variants, the converter remains responsible for end-product migration testing under FDA 21 CFR 177.1520(c) and EU Regulation 10/2011, and for heavy-metal limits under RoHS 2011/65/EU. Published data for this specific configuration is limited; lot-to-lot verification of melt flow and density from the certificate of analysis is required before setting accumulator drop times and clamp force.
In sheet extrusion and downstream plug-assist thermoforming, the elevated melt viscosity of HDPE 7195 relative to medium-flow grades changes draw-ratio tolerance and chill-roll release behavior. A sheet line with a 90 mm single-screw extruder at 30:1 L/D and a barrier mixing section can run barrel setpoints from 185°C to 225°C, with a die head temperature of 210–225°C and a polished three-roll stack maintained at 70–90°C. Sheet thickness from 1 mm to 5 mm is feasible, but sag at the die exit limits width stability when the melt temperature exceeds 225°C; a die lip gap of 1.3 times the target sheet thickness is used to compensate for orientation release. During plug-assist thermoforming, the sheet surface is heated to 180–200°C in a quartz or ceramic infrared oven, and the plug is typically preheated to 120–140°C to prevent chilling the sheet and causing fold lines. Mould temperature is held at 80–100°C for parts with wall thickness above 2 mm, while plug speed of 0.2–0.5 m/s is adjusted to avoid material thinning at the base corners. Formulation for UV-stabilised dunnage uses 2.0–2.5 wt% carbon black masterbatch, with dispersion measured as no agglomerates larger than 20 µm under ISO 18553:2021; for food-contact sheet, the masterbatch carrier resin must itself comply with 21 CFR 177.1520(c) and EU 10/2011. End products include thermoformed dunnage trays, automotive underbody shields, battery boxes, and pallet liners where flexural modulus under ASTM D790-17 should be confirmed on the formed part rather than on the extruded sheet, because orientation and residual stress redistribute during draw ratios between 1.5:1 and 4:1.
Injection moulding of thick-walled industrial components from a 0.95 g/10 min HDPE requires elevated melt temperatures and high clamp forces because the flow length-to-wall-thickness ratio drops below that of medium-flow grades. A toggle-clamp injection moulding machine with 350–500 t clamp force and a general-purpose screw of 20:1 L/D and 0.6:1 compression ratio is used; barrel temperatures are set from 160°C at the feed throat to 220°C at the nozzle, with nozzle temperature limited to 225°C to avoid drool. Injection pressures of 80–120 MPa and back pressure of 0.5–1.0 MPa are typical for filling wall sections of 4 mm to 10 mm, with screw recovery times extended to 10–15 s to manage gas entrapment and melt-density variation. The mould is cooled to 15–30°C and the hold pressure is staged at 60–80% of peak injection pressure for 3–8 s before switching to cooling; this prevents sink marks in bosses and ribs while avoiding overpacking at the gate. Formulation includes 0.1–0.3 wt% zinc stearate or a comparable internal release agent to reduce ejection friction, but converters must verify food-contact additive migration limits under EU Regulation 10/2011 Article 6 and FDA 21 CFR 177.1520(c) if the part touches food. End products include heavy-duty tote bins, pump housings, valve bodies, and material-handling pallets where Izod impact resistance is tested per ASTM D256-23 and tensile properties per ASTM D638-14; published data for this specific configuration is limited, so short-shot studies and pressure-drop analysis should be performed on each tool.
Profile extrusion of HDPE 7195 into structural ducts, cable channels, and industrial edge protectors requires die pressure compensation because the resin’s low melt index produces higher die pressure than medium-flow grades. On a single-screw extruder of 45 mm to 60 mm diameter and 24:1 L/D, barrel temperatures are set from 175°C at the feed throat to 215°C at the die, with melt pressure at the breaker plate typically observed between 15 MPa and 25 MPa depending on screw speed and profile cross-section. Die swell increases as die land length is shortened below 10 times the die gap; therefore, land lengths of 12–15 times the gap are specified to reduce surface sharkskin and to stabilise dimensions. A fluoropolymer processing aid is added at 0.5–1.5 wt% to suppress melt fracture at shear rates above 1000 s⁻¹, but potable-water profile applications require that the processing aid and stabiliser system comply with NSF/ANSI 61 or EU Directive 98/83/EC as applicable. Cooling is performed in a vacuum calibration tank with water temperature of 15–25°C and vacuum of 0.02–0.05 bar; line speeds for profiles with wall thickness between 2 mm and 5 mm are typically limited to 3–8 m/min to avoid centreline voids and post-extrusion warpage. End products include underground cable ducts, chemical fume hood profiles, and corrosion-resistant structural channels where heat deflection temperature is tested per ASTM D648-18 at 0.455 MPa and tensile impact per ASTM D1822-21; dimensional acceptance is evaluated against ISO 20421:2019 profile tolerances.
| End-use direction | Standard / Regulation | Test designation | Critical control point |
|---|---|---|---|
| Extrusion blow moulded industrial packaging | UN 1H1 performance, ASTM D4577-19, ASTM D1693-15 | Static stack load, ESCR Condition B | Parison sag 2–5 mm/s, melt deviation ±3°C |
| Food-contact sheet and containers | FDA 21 CFR 177.1520(c), EU 10/2011 | Overall migration per EU 10/2011 Annex III/V | Converter-specific end-product migration |
| Injection moulded tote bins | ASTM D256-23, ASTM D638-14 | Izod impact, tensile yield | Mould temperature 15–30°C, hold pressure 60–80% |
| Profile extrusion duct | NSF/ANSI 61, ISO 20421:2019 | Dimensional tolerance, potable-water compliance | Vacuum calibration, PPA level 0.5–1.5 wt% |
| Oriented strapping | ASTM D5262-21, ISO 527-2:2012 | Creep resistance, tensile strength | Draw ratio 6:1–10:1 |
| Geomembrane liner | ASTM D3895-19, ASTM D6392-12 | Oxidative induction time, seam peel | Carbon black dispersion 20 µm |
Oriented strapping and monofilament drawing are process-limited applications for HDPE 7195 because the resin’s melt strength supports high draw ratios but its low melt index demands tight melt filtration and precise draw-ratio control. A cast-film or tape extrusion line with a 30 mm extruder at 30:1 L/D and a melt pump is used to deliver melt to a coat-hanger die at 210–220°C; the extruded tape is quenched in a water bath at 30–40°C to minimise spherulite size before orientation. Draw ratios between 6:1 and 10:1 are applied in a hot-air oven at 110–120°C, followed by annealing at 105–110°C for 10–30 s to reduce slit-edge fibrillation. The formulation is processed neat, because particulates above 20 µm act as stress concentrators during orientation and reduce tensile break strength; a 0.1 wt% phosphite antioxidant is typically pre-compounded to protect the melt at 220°C. End products include high-tensile strapping for pallet unitization and monofilament for industrial brushes, where tensile strength is measured per ASTM D638-14 or ISO 527-2:2012 on drawn strands and creep resistance is benchmarked under ASTM D5262-21; processors should be aware that published data for this specific configuration is limited, and a drawing trial at 6:1 first is recommended before committing to higher draw ratios.
For extruded geomembrane panels and welding rod stock, Baystar HDPE 7195 is evaluated only after fusion-weld compatibility testing between extruded sheet and rod stock, because molecular weight distribution and comonomer type influence weld seam strength. A flat-die sheet line with a 60 mm extruder at 24:1 L/D is operated at melt temperatures of 200–215°C, with a polished roll stack at 80–100°C to control shrinkage below 1.5% in both machine and transverse directions when tested per ASTM D1204-20. Formulation for black geomembrane uses 2.0–3.0 wt% carbon black masterbatch and 0.2 wt% hindered amine light stabilizer, with oxidative induction time tested at 200°C under ASTM D3895-19 and melt flow retention after 5 extrusion passes per ASTM D1238 to confirm lot stability. Welding rods are extruded from the same lot to avoid density mismatch; wedge welding at 220–230°C and seam peel strength above 80% of parent sheet yield, as tested per ASTM D6392-12, is the acceptance criterion. End products include secondary containment liners, canal liners, and chemical-resistant tank linings where chemical immersion resistance is benchmarked under ASTM D543-21 and oxidative degradation under ASTM D1693-15; converters must verify that the grade’s residual catalyst and additive package meet EU Regulation 10/2011 if the liner contacts food or potable water, but published data for this specific configuration is limited and long-term hydrostatic data should be generated before specification.
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Bayport Polymers (Baystar) HDPE 7195 is a high-molecular-weight high-density polyethylene used in extrusion blow molding and blown film processes where melt strength, stiffness, and environmental stress crack resistance are specified. The product is a fractional-melt resin. The manufacturer’s condensed datasheet lists a nominal density of 0.953 g/cm³ measured by ASTM D1505-18 / ISO 1183-1:2019 and a nominal melt flow rate at 190 °C / 2.16 kg of 0.15 g/10 min measured by ASTM D1238-20, Procedure A, or ISO 1133-1:2022, condition 190/2.16. The high-load melt flow rate at 190 °C / 21.6 kg is 7.5 g/10 min by Procedure B. The calculated flow ratio is therefore 50. That flow ratio is a relative index of molecular weight distribution breadth and shear thinning. A value near 50 indicates that the resin maintains relatively high viscosity at low shear while exhibiting pronounced viscosity reduction at die shear rates. This behavior is exploited during parison formation in blow molding and bubble inflation in film extrusion. The resin is supplied as pellets. It is typically used in natural or pre-colored formulations; carbon black, white, or color masterbatches are added on the production floor rather than being polymerized into the base grade.
| Property | Test method | Nominal value |
|---|---|---|
| Density | ASTM D1505-18 / ISO 1183-1:2019 | 0.953 g/cm³ |
| Melt flow rate, 190 °C / 2.16 kg | ASTM D1238-20 Procedure A | 0.15 g/10 min |
| High-load melt flow rate, 190 °C / 21.6 kg | ASTM D1238-20 Procedure B | 7.5 g/10 min |
| Flow ratio, HLMI / MI | Calculated | 50 |
| Tensile strength at yield | ASTM D638-14, Type IV | 27.0 MPa |
| Elongation at break | ASTM D638-14, Type IV | >600% |
| Flexural modulus | ASTM D790-17, Procedure A | 1.25 GPa |
| Vicat softening point | ASTM D1525-17e1, Rate A/50 | 126 °C |
Values in Table 1 are nominal and are not batch release limits. A certificate of analysis should be used for lot-specific acceptance. Where the datasheet does not provide a value, such as environmental stress crack resistance or notched impact strength, the processor should request the current production lot data rather than substituting generic values from unrelated high-density polyethylene grades.
The processing envelope is defined by melt temperature and residence time more than by a single setpoint. On continuous extruders with grooved-feed zones and screw L/D ratios of 24:1 to 30:1, a melt temperature setpoint of 204–221 °C is common for HDPE grades with a melt index below 0.2 g/10 min. The upper limit for Baystar HDPE 7195 is governed by oxidative degradation rather than melting point. At melt temperatures above 232 °C and residence times greater than 3 min, carbonyl formation becomes measurable in full-scale trials. The resulting carbonyl index increase coincides with a loss of impact resistance measured by ASTM D256-10(2018) and a reduction in ESCR measured by ASTM D1693-15e1. Head and die zones are therefore set 10–20 °C below the maximum barrel setpoint to avoid local overheating. Accumulator head blow molding machines with barrel diameters from 90 mm to 120 mm and head tooling sufficient for 2–10 L containers are suitable. The high melt strength allows extended parison hang lengths, but accumulator discharge pressures above 345 bar should be avoided because uncontrolled shear heating can move the melt temperature outside the setpoint window. Published data for this specific resin in accumulators larger than 20 L is limited; pilot runs are required before scale-up.
In blown film, Baystar HDPE 7195 is processed on high-stalk HDPE film lines equipped with spiral mandrel dies and dual-lip air rings. The melt temperature at the die lip is held between 210 °C and 232 °C. A die gap of 0.8–1.2 mm and a blow-up ratio of 2.5:1 to 4.0:1 produces film thickness from 12 µm to 50 µm. Gauges below 10 µm require elevated drawdown and are not the primary design space. Excessive frost-line height variation increases gauge spread measured by ASTM D6988-21 and reduces print quality in subsequent converting. The resin’s stiffness is characterized by a 1.25 GPa flexural modulus by ASTM D790-17. This permits down-gauging in merchandise bags relative to LLDPE film of identical thickness because the secant modulus at 1% elongation, measured by ASTM D882-18, is higher than that of a 0.918 g/cm³ LLDPE comparator. Dart drop impact resistance measured by ASTM D1709-16a, Method A, and Elmendorf tear resistance measured by ASTM D1922-15 should be validated on the target gauge. The resin is not intended for thin cling film or stretch wrap; those applications require low modulus and high tack that this grade does not provide.
Substitution of Baystar HDPE 7195 for a unimodal HDPE of equivalent density requires re-tuning of die pressure, temperature, and cooling. Because the broadened molecular weight distribution increases shear thinning, the viscosity at die-lip shear rates is lower than that of a narrow-MWD unimodal resin of the same 0.15 g/10 min melt index. On a screw with L/D 28:1, this can reduce die pressure by 5–15%, but it can also increase parison sag under long hang times. Blow molder clamp-force settings must be checked against the heavier parison. For bottles with wall thicknesses above 0.8 mm, the increased environmental stress crack resistance measured by ASTM D1693-15e1, Condition B, in 100% Igepal CO-630 is typically higher than that of a unimodal HDPE at equivalent density. Batch-specific ESCR values are issued on the certificate of analysis. The substitution is not drop-in when the existing die gap is below 0.8 mm; the high melt strength may produce melt fracture at the die exit, visible as surface roughness that reduces top-load strength measured by ASTM D2659-16.
Compared with injection molding HDPE grades having melt flow rates of 8–20 g/10 min by ASTM D1238-20, Baystar HDPE 7195 has a much lower melt index and is not suitable for long thin-wall flow paths, high-cavitation tooling, or rapid cycle times below 10 s. The difference is process-specific: injection molding requires low viscosity at high shear to fill, whereas extrusion blow molding requires extensional strain hardening and sag resistance. Compared with LLDPE butene film resins at 0.918 g/cm³, this product increases density and modulus but typically reduces dart impact and tear resistance. Any replacement must be validated by ASTM D1709-16a and ASTM D1922-15 on the same film line and target gauge. The product should not be blended with LLDPE above 20 wt% without evaluating bubble stability and melt fracture; phase incompatibility can produce visible gel-like defects and reduce tear strength measured by ASTM D1922-15.
Extrusion blow molding operations using Baystar HDPE 7195 benefit from parison programming and die gap control. A die gap setting of 1.0–2.5 mm is typical for containers between 0.5 L and 10 L. Concentricity of the die bushing and mandrel must be maintained within 0.05 mm total indicator runout; larger eccentricity produces uneven wall thickness and reduces drop impact performance measured by ASTM D2463-15. Parison swell is influenced by die land length and melt temperature. Long die lands above 15 mm reduce swell and can improve gauge uniformity, but they also increase residence time. When the die land length exceeds 20 mm, the higher back pressure must be monitored against the 345 bar discharge limit. Clamp force requirements depend on mold area and inflation pressure. For a 5 L container with a projected mold area of 0.12 m², a clamp force of 8–12 t is typically sufficient when the blowing pressure is 0.6–0.8 MPa. Higher blowing pressures increase sidewall orientation and improve top-load strength by ASTM D2659-16 but may require additional clamp tonnage. The mold cooling water temperature is held at 10–15 °C. Warpage increases when the core and cavity temperature differential exceeds 5 °C because differential shrinkage in thick-walled sections becomes measurable by dimensional inspection.
For blown film differentiation, the product’s high melt strength permits stable high-stalk extrusion at stalk heights of 6–10 die diameters. This allows orientation in the machine direction before frost-line crystallization. Machine-direction orientation increases stiffness anisotropy; the ratio of machine-direction to transverse-direction tensile strength at break measured by ASTM D882-18 can exceed 3:1 at high drawdown. Converters producing T-shirt sacks, can liners, and merchandise bags use this anisotropy to improve handleability and tear propagation resistance. However, transverse-direction tear resistance decreases as drawdown increases. When Elmendorf tear measured by ASTM D1922-15 in the transverse direction falls below 0.5 N at 20 µm, the film may fail in automated bag conversion. The processor must balance die gap, blow-up ratio, and frost-line height to maintain tear values within the converter’s specification window.
Regulatory compliance for food-contact use should be confirmed with the supplier against 21 CFR 177.1520(c) 2.1 and 2.2, as applicable, and EU Regulation (EU) No 10/2011. The base resin is not UV-stabilized unless a carbon black or hindered amine light stabilizer masterbatch is added at the recommended letdown ratio. Outdoor exposure testing should follow ASTM G154-16 for UV conditioning and ASTM D638-14 for retained tensile properties. The product is not classified under PE100 or PE4710 pipe resins; use in pressure piping is outside the intended application range. For converters requiring material safety data, REACH registration under Regulation (EC) No 1907/2006 and candidate list status should be verified through the supplier. RoHS compliance should be confirmed for the specific formulated compound because additives and masterbatches can introduce regulated substances even when the base resin does not.
| Standard or regulation | Scope | Application note |
|---|---|---|
| ASTM D1238-20 | Melt flow rate | Use Procedure A for MI and Procedure B for HLMI |
| ISO 1133-1:2022 | Melt mass-flow rate and melt volume-flow rate | Condition 190/2.16 and 190/21.6 |
| ASTM D1505-18 / ISO 1183-1:2019 | Density | Gradient column or immersion method |
| ASTM D638-14 | Tensile properties | Type IV specimen at 50 mm/min |
| ASTM D790-17 | Flexural modulus | Procedure A, 1% secant |
| ASTM D1693-15e1 | Environmental stress crack resistance | Condition B, 100% Igepal CO-630 |
| ASTM D1525-17e1 | Vicat softening point | Rate A/50 |
| 21 CFR 177.1520 | US food-contact status | Verify subparagraph c 2.1 or c 2.2 with supplier |
| EU Regulation (EU) No 10/2011 | Plastic food-contact materials | Overall migration limit and specific migration limits apply to final article |
| ASTM G154-16 | UV weathering | Required only for outdoor exposure with suitable stabilization |
Where the final application requires repeated sterilization, high-temperature exposure above 80 °C under load, or direct contact with oxidizing agents, the processor should not rely solely on generic HDPE compatibility statements. Long-term chemical exposure should be tested using the specific fill media and temperature profile, with retained tensile elongation measured by ASTM D638-14 and mass change measured by ASTM D543-20. For such applications, the supplier’s technical service should be engaged to define a validation matrix. The operational boundary for Baystar HDPE 7195 is therefore defined by the combination of fractional melt index, high flow ratio, and moderate density; it is not a general-purpose resin for every polyolefin converting process.
