| HS Code | 764444 |
| Density | 0.9 g/cm³ |
| Melt Flow Rate | 2.1 g/10 min (230°C, 2.16 kg) |
| Tensile Stress At Yield | 28 MPa |
| Tensile Strain At Yield | 13% |
| Flexural Modulus | 950 MPa |
| Izod Impact Notched 23 C | 5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 90°C |
| Vicat Softening Temperature 10 N | 132°C |
| Melting Temperature | 146°C |
| Hardness | 50 MPa (Ball Indentation Hardness) |
As an accredited MOPLEN PP HP462R factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | MOPLEN PP HP462R polypropylene is supplied in 25 kg multilayer paper bags, palletized and stretch-wrapped for safe handling and transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of MOPLEN PP HP462R polypropylene resin, securely packed and stowed for safe transport. |
| Shipping | MOPLEN PP HP462R is a polypropylene random copolymer supplied as solid pellets. It is non-hazardous for transport under IMDG, ADR, and IATA regulations. Ship in clean, dry containers or polyethylene-lined bags, protected from moisture and excessive heat, and avoid contamination with other materials. |
| Storage | Store MOPLEN PP HP462R in a dry, cool, well-ventilated area away from direct sunlight, ignition sources, and strong oxidizers. Keep containers tightly sealed to prevent moisture, dust, or contamination. Avoid prolonged storage above 50°C and prevent dust accumulation. Handle with proper PPE and follow local storage regulations for polymer resins. |
| Shelf Life | Store in a cool, dry place away from sunlight. Shelf life is at least five years if unopened and properly stored. |
Polypropylene homopolymer feedstock with an ISO 1133-1 melt flow rate of 2.8 g/10 min at 230 °C/2.16 kg and density of 0.900 g/cm³ under ISO 1183-1 enters woven-tape lines as the continuous matrix for slit-film fabrics in which circular loom productivity and sack drop-impact resistance are governed by orientation stability of the water-quenched film. The compliance baseline for this sector is anchored to ISO 21898 for flexible intermediate bulk containers, EN 12195-2 for lashing straps, and, where food-contact service is specified, FDA 21 CFR 177.1520 polyolefin requirements plus overall migration limits under EU 10/2011 using OM2 or OM3 test conditions. In formulation, the tape compound typically comprises 94–97 wt% MOPLEN PP HP462R, 2–4 wt% calcium carbonate anti-splitting masterbatch, 0.5–1.5 wt% hindered amine light stabilizer, and 0.2–0.5 wt% internal lubricant; the virgin resin remains the continuous phase because calcium carbonate masterbatch dilution exceeding 6 wt% is associated with reduced transverse weave strength and increased tape fibrillation on high-speed circular looms. Downstream, the granules are melted in single-screw extruders with L/D ratios of 30:1 to 36:1, barrel profiles from 200 °C to 250 °C, extruded through a flat die with die-gap 0.8–1.2 mm, quenched in a water bath held at 30–35 °C, slit into tapes, oriented in a hot-air oven at 120–150 °C with a draw ratio between 1:5 and 1:7, and annealed on heated godets before weaving. Terminal products include woven PP sacks, FIBC baffle bags, tarpaulin base fabrics, and industrial lashing straps.
On sequential biaxial orientation lines, the core layer of a three-layer A/B/A film consumes MOPLEN PP HP462R at 60–80 wt% of the total film structure; the skin layers are typically propylene-ethylene random copolymers at 10–20 wt% per skin, and the remaining 0–8 wt% is allocated to anti-blocking, slip, and antistatic masterbatches. The relevant compliance framework includes EU 10/2011 food-contact migration modelling for polyolefins, FDA 21 CFR 177.1520, and, for pharmaceutical strip film, USP <661.1> plastic packaging characterization. Processing on a BOPP line begins with extrusion at melt temperatures of 240–260 °C through a coat-hanger die, followed by cast quenching on a chill roll maintained at 28–32 °C; the sheet is then stretched in the machine direction at 4.5–5.5× across preheated rolls and in the transverse direction at 8–10× in a tenter oven, with annealing zones held at 130–150 °C. Terminal film types include single-face and two-face heat-sealable BOPP overwrap, labelling films, adhesive tape base film, and metalized film substrates.
| Downstream sector | Core compliance reference | Relevant test method | Typical production control range |
|---|---|---|---|
| Woven slit-film tapes | ISO 21898, EN 12195-2 | Seam strength, elongation at break | Draw ratio 1:5–1:7 |
| BOPP core film | EU 10/2011, FDA 21 CFR 177.1520 | Overall migration OM2/OM3 | MD 4.5–5.5×; TD 8–10× |
| Monofilament | EN ISO 2307:2019 | Breaking load, knot ratio | Draw ratio 1:6–1:10 |
| Injection-moulded closures | EU 10/2011, FDA 21 CFR 177.1520 | Overall migration, top-load compression | Melt 220–250 °C |
| Thermoformed sheet | EU 10/2011, ISO 15013:2022 | Sheet thickness tolerance, flatness | Roll stack 60–85 °C |
The oriented monofilament line requires a narrow molecular weight distribution and controlled water-bath temperature because diameter variation above ±5% along the monofilament axis generates weak points in rope braiding and netting knotting operations. MOPLEN PP HP462R is metered at 97–100 wt% of the extruder feed; where UV resistance is specified, 1.5–2.0 wt% hindered amine light stabilizer masterbatch and 0.3–0.8 wt% spin finish are added without exceeding a total additive envelope of 3 wt%. Compliance for load-bearing ropes is tested under EN ISO 2307:2019, while agricultural twine and fishing net components follow ISO 1346:2012 and ISO 1530 requirements where applicable. Downstream, the granules are melted in a single-screw extruder with L/D ratio of 30:1 to 32:1, barrel set temperatures 220–245 °C, extruded through a spinneret with hole diameters 2.0–3.5 mm, quenched in a water bath held at 30–40 °C, drawn between godet sets at speed ratios of 1:6 to 1:10, and annealed in hot-air ovens at 130–150 °C. Terminal products include braided ropes, agricultural twine, industrial netting, and geotextile reinforcement yarn.
In closure and rigid packaging moulding, the medium melt flow rate of MOPLEN PP HP462R supports filling of thin-wall sections without excessive flash, but the low elongation at yield demands gate placement that avoids jetting and weld-line failure under top-load compression. The formulation may be 100 wt% virgin resin for food-contact closures or 90 wt% virgin resin blended with 10 wt% in-house regrind for non-food industrial closures; colour masterbatch addition is restricted to 0.5–2.0 wt% to preserve stiffness and odour neutrality. Compliance is established under EU 10/2011 overall migration limits, FDA 21 CFR 177.1520, and REACH SVHC screening. On injection moulding machines, typical barrel temperatures are 220–250 °C, injection pressure ranges from 80–120 MPa, hold pressure is maintained at 40–60 MPa, and mould temperature is controlled between 20–40 °C; for a nominal wall thickness of 1.2 mm, cycle time ranges from 8–15 s, with clamp force requirements of 3–5 kN/cm² of projected area. Terminal products include tamper-evident beverage closures, cosmetic jar overcaps, thin-wall appliance housings, and rigid medical device packaging components.
Monolayer PP sheet for thermoforming depends on roll-stack temperature control to prevent curl, edge-trim cracking, and crystallinity-driven brittleness after forming. MOPLEN PP HP462R is run at 95–100 wt% of the sheet formulation; anti-blocking masterbatch is added at 0–2 wt% and colour masterbatch at 0–2 wt%, with total additive loading kept below 4 wt% because higher loadings shift the crystalline morphology and create visible streaks on polished roll surfaces. Food-contact sheet is evaluated under EU 10/2011 and FDA 21 CFR 177.1520, while dimensional tolerance and sheet flatness are referenced to ISO 15013:2022. Production lines typically use single-screw extruders with L/D ratios of 32:1 to 38:1, melt temperatures 220–245 °C, a die gap set at 2–3 times the target sheet thickness, and a vertical three-roll stack with top roll 75–85 °C, middle roll 70–80 °C, and bottom roll 60–70 °C; sheet thickness ranges from 0.4 mm to 1.5 mm, and thermoforming preheat temperatures of 150–170 °C are used with plug-assisted moulds. Terminal products include drinking cups, food trays, dairy tub lids, and blister packaging.
When low-denier fibre spinning approaches the melt-flow lower boundary, extruder pressure and spinneret back-pressure rise steeply, and melt fracture at hole exits increases the coefficient of variation of fibre denier unless barrel temperature and die design are adjusted. In this sector, MOPLEN PP HP462R is blended at 93–98 wt% of the feed, with 1.5–3.0 wt% pigment masterbatch for solution-dyed fibres and 0.3–0.6 wt% spin finish applied after quenching; filler masterbatches are excluded to maintain spin-line continuity. Compliance for needle-punched geotextiles references ISO 10318:2015 terminology and EN 13249:2016 for geotextiles in road construction, while automotive carpet-backing materials are tested for flammability under FMVSS 302 where specified. The downstream process uses extruders with L/D ratios of 28:1 to 32:1, melt temperatures 250–270 °C, spinneret hole diameters 0.3–0.6 mm, quench air at 12–22 °C, mechanical draw ratios of 1:2.8 to 1:4.2, and crimping or cutting into staple lengths. Published tensile and spinnability data specific to HP462R in sub-10 dtex fibre configurations are limited; line trials are required to determine the exact pressure–throughput envelope. Terminal products include needle-punched geotextiles, automotive carpet backing, mattress felt, and filtration support layers.
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MOPLEN PP HP462R is a polypropylene homopolymer resin manufactured under the MOPLEN trademark. The grade is positioned for sheet extrusion and subsequent thermoforming, with secondary use in thick-wall blow moulding and technical profiles. The supplier data sheet lists a nominal melt flow rate of 2.6 g/10 min at 230 °C/2.16 kg when tested according to ISO 1133-1:2022 and a density of 0.900 g/cm³ at 23 °C by ISO 1183-1:2022. Typical mechanical properties reported for the test specimens are tensile stress at yield 35 MPa and tensile modulus 1550 MPa by ISO 527-2:2012, flexural modulus 1500 MPa by ISO 178:2019, notched Charpy impact strength 3.0 kJ/m² at 23 °C by ISO 179-1/1eA, Vicat softening temperature 154 °C by ISO 306:2022, and heat deflection temperature 100 °C at 0.45 MPa by ISO 75-2:2013. The low melt flow rate gives higher melt strength than high-MFR injection-moulding grades, which reduces sag during thermoforming and stabilises sheet edges. The product is used in monolayer sheet for stationery, display folders, packaging trays, and technical formed parts. It is not intended for thin-wall injection moulding, transparent packaging, or frozen-food service.
Rheologically, the melt flow rate of 2.6 g/10 min places HP462R at the lower end of the MOPLEN homopolymer flow range. The practical consequence is high zero-shear viscosity in sheet extrusion. On a single-screw extruder with L/D 30:1 to 36:1 and a barrier screw, the barrel temperature profile is typically set from 200 °C in the feed zone to 240 °C in the metering zone. Melt temperature at the die should be held at 230–250 °C, with die temperature 240–260 °C. A coathanger die and a screen pack of 60/80/100 mesh are commonly used. Chill roll temperatures of 20–30 °C produce glossy sheet and control sheet flatness. The resin’s high melt strength suppresses draw resonance and edge weave relative to a 12 g/10 min injection-grade homopolymer. Melt pressure upstream of the screen changer is monitored; an upward trend above 25 MPa indicates screen pack blinding, melt temperature below 220 °C, or accumulation of degraded gel from excessive residence time. Processing below 220 °C produces visible unmelts in sheet below 1.0 mm thickness and raises motor load on a 75 mm extruder. Residence time above 260 °C should not exceed 20 min; prolonged exposure under shear initiates thermo-oxidative degradation, visible as yellowing and a drop in intrinsic viscosity.
Thermoforming is performed at sheet surface temperatures of 160–180 °C. At surface temperatures below 155 °C, the sheet fails to replicate mould features and retains high internal stress; above 185 °C, sag increases and local wall thickness variation becomes difficult to control. Plug-assisted forming with aluminium or syntactic foam plugs is recommended for draw ratios above 1.5:1. Mould temperature is maintained at 20–60 °C to balance crystallinity and cycle time. Drying is not routinely required for virgin pellets stored below 60% relative humidity. If regrind content exceeds 50% or storage occurs above 85% relative humidity, surface moisture creates splay; pre-drying in a desiccant dryer at 80 °C for 2–4 h is required.
Thermally, the homopolymer has a melting peak near 162 °C by ISO 11357-3:2018. This is higher than typical ethylene-propylene random copolymers, which show melting peaks in the 145–155 °C range, and supports higher upper service temperature but lower clarity. Optical haze on 1 mm sheet from homopolymer PP is typically higher than that of random copolymers; published data for HP462R optical grade is limited, but homopolymer sheet generally exhibits more crystalline scattering. Therefore the grade is better suited to pigmented, opaque, or coloured sheet than to transparent packaging. Nucleating agents and polished chill rolls can reduce haze, but the effect is less than changing to a random copolymer. The Vicat softening temperature of 154 °C and HDT of 100 °C at 0.45 MPa indicate that HP462R retains stiffness at moderately elevated temperatures, such as during hot-fill contact up to 95 °C for short durations; published data for this specific hot-fill configuration is limited and must be validated with final package geometry.
The principal difference is flow length. HP462R is a low-MFR extrusion grade, whereas injection-moulding homopolymers often have melt flow rates between 10 g/10 min and 15 g/10 min at 230 °C/2.16 kg. A higher MFR resin fills thin walls at lower injection pressure and shorter cycle time but has lower melt strength in extrusion; sheet made from such grades tends to sag in the thermoforming oven and form unstable edges. The low MFR of HP462R increases molecular weight and entanglement density, raising melt tension and extensional viscosity. The trade-off is poor thin-wall injection mouldability; spiral flow length at 230 °C and 60 MPa injection pressure is substantially lower than that of a 12 g/10 min homopolymer. Published data for this exact spiral flow comparison is limited, but the trend follows from the melt flow rate and viscosity curves in supplier literature.
Shrinkage and orientation behaviour also differ. Low-MFR sheet grades develop more orientation during extrusion; roll-stack gap control, cooling rate, and annealing procedures must be adjusted to reduce warp. If the material is processed on a line set up for a high-MFR grade without resetting die and roll temperatures, edge thickening and transverse thickness variation increase.
| Property / test method | MOPLEN HP462R sheet grade | High-MFR injection homopolymer | Impact copolymer reference |
|---|---|---|---|
| Melt flow rate, ISO 1133-1:2022, 230 °C/2.16 kg | 2.5–3.0 g/10 min | 10–15 g/10 min | 2.0–5.0 g/10 min |
| Tensile modulus, ISO 527-2:2012 | 1400–1600 MPa | 1500–1700 MPa | 1200–1400 MPa |
| Notched Charpy at 23 °C, ISO 179-1/1eA | 2.0–3.0 kJ/m² | 2.0–3.5 kJ/m² | 8–15 kJ/m² |
| Vicat softening temperature A50, ISO 306:2022 | 150–156 °C | 150–156 °C | 145–150 °C |
| HDT B, 0.45 MPa, ISO 75-2:2013 | 95–105 °C | 100–110 °C | 80–90 °C |
Sealing behaviour further differentiates the grade. Homopolymer PP has a higher seal initiation temperature, near 160 °C, compared with 130–140 °C for ethylene-containing random copolymers. In multilayer packaging structures, HP462R is therefore used as a stiff backing layer rather than a seal layer. Heat seal strength is measured by ASTM F88; the actual seal window depends on film or sheet thickness, dwell time, and seal bar temperature.
MOPLEN PP HP462R in unfilled pellet form can be considered for food-contact applications under FDA 21 CFR 177.1520(c) when the final article meets extractives limitations and end-use conditions. For European Union food contact, assessment against Regulation (EU) No 10/2011 is required, including overall migration limits in Annex I. REACH registration obligations for the polymer are managed under Regulation (EC) No 1907/2006. Under Directive 2011/65/EU, unfilled polypropylene homopolymers of this type do not normally contain lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above maximum concentration values, but final colour concentrates, fillers, and processing aids must be evaluated separately. The polymer is not inherently flame-retardant; an unfilled thin section typically carries an HB classification at 3.0 mm under UL 94, with the actual rating dependent on colour, thickness, and additive package.
Substitution of HP462R for a heterophasic impact copolymer should be limited to service temperatures above 0 °C unless the part has low stress concentration and low-temperature impact testing has been completed. Homopolymer polypropylene exhibits a glass transition around 0 °C; notched impact resistance decreases sharply below freezing. A notched Charpy impact strength of approximately 3.0 kJ/m² at 23 °C can fall below 1.5 kJ/m² at 0 °C; published data for the exact grade at low temperature is limited, but the behaviour is consistent with unfilled PP homopolymer. Impact copolymers typically retain 5–10 kJ/m² under the same conditions. Therefore, refrigerator trays, dairy cups, or frozen-food packaging made from HP462R require redesign to reduce notch sensitivity, or validation by ISO 6603-2 instrumented puncture testing at -20 °C. The grade is more appropriate for ambient-temperature display products, boxes, and technical trays where stiffness, heat resistance, and scratch resistance are more important than low-temperature impact.
On production-scale sheet lines, regrind from thermoformed scrap is typically used at 20–30% by weight. The regrind must be ground to a particle size below 10 mm to prevent bridging in the extruder feed throat and to ensure uniform melting. Mineral filler masterbatch may be added at 5–15% by weight to increase modulus and reduce sag; addition above 30% reduces impact strength and increases melt viscosity. Batch-to-batch variation in melt flow rate of ±0.3 g/10 min can alter sag depth and part wall thickness distribution, so online melt pressure monitoring and sheet thickness scanning are used. If storage humidity exceeds 60% or regrind content is high, pre-drying at 80 °C for 2–4 h prevents surface splay. Avoid exposure to strong oxidizing agents and chlorinated solvents at elevated temperature during service.
