| HS Code | 281387 |
| Density | 0.90 g/cm3 |
| Melt Flow Rate | 19 g/10 min (230°C, 2.16 kg) |
| Tensile Strength At Yield | 35 MPa |
| Elongation At Break | >50 % |
| Flexural Modulus | 1600 MPa |
| Notched Izod Impact Strength At 23 C | 2.5 kJ/m2 |
| Rockwell Hardness | R-103 |
| Heat Deflection Temperature At 0 45 Mpa | 105 °C |
| Vicat Softening Point | 155 °C |
| Volume Resistivity | 1.0E15 ohm·cm |
| Dielectric Strength | 20 kV/mm |
| Water Absorption | 0.01 % |
As an accredited REPOL PP Homopolymer H019TG factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | REPOL PP Homopolymer H019TG is packaged in 25 kg multi-wall paper bags, palletized and shrink-wrapped for safe handling and transport. |
| Container Loading (20′ FCL) | 20' FCL loading of REPOL PP Homopolymer H019TG in 25kg bags, palletized, secured for safe transport. |
| Shipping | REPOL PP Homopolymer H019TG is a non-hazardous polypropylene resin. It ships in heat-sealed moisture-resistant bags, bulk bags, or railcars. Keep dry, avoid direct sunlight and excessive heat. Store in ventilated area, away from ignition sources. Handle with standard industrial equipment to prevent bag damage. |
| Storage | Store REPOL PP Homopolymer H019TG in a cool, dry, well-ventilated area away from direct sunlight, ignition sources, and excessive heat. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid stacking too high to prevent deformation. Maintain temperatures below 40°C, and use within recommended shelf life. Store in original packaging until use. No special hazard. |
| Shelf Life | Shelf life is typically 12 months from delivery when stored in original, unopened packaging in a cool, dry environment. |
On roll-fed inline thermoforming lines producing 500–1000 mL dairy cups from H019TG sheet, the polymer is processed as neat resin with 2.0–3.0 wt% white masterbatch and 0.05–0.15 phr phosphite-phenolic antioxidant blend; sheet extrusion is carried out on a 75 mm single-screw extruder with 30:1 L/D barrier screw, feed throat at 180°C, compression at 200°C, metering at 220°C, and flat die at 225–235°C. Cast sheet of 0.8–1.2 mm thickness is quenched on polished rolls at 22–28°C to limit beta-phase haze, then re-heated in a contact plate oven to a sheet surface temperature of 150–165°C; below 148°C the low-MFR melt exhibits insufficient extensibility for full plug-assisted replication of the bottom corner radius, while above 172°C uncontrolled sag causes non-uniform sidewall thinning that falls below the 10% minimum thickness retention expected for cup compression testing. Compliance for the finished article in contact with acidified dairy products depends on compliance with FDA 21 CFR 177.1520(c) and EU No 10/2011 with its overall migration limit of 10 mg/dm² in food simulant B at 40°C for 10 days; the resin grade does not by itself confer final compliance, and color masterbatches must be selected from suppliers with documented migration data under the same simulant conditions. Thermoforming typically uses plug temperature held at 70–90°C, plug assist ratio of 0.6–0.8, and forming air pressure of 4–6 bar for a 1.2:1 draw ratio; the terminal products are single-serve yogurt cups, dessert pots, and margarine tubs with sidewall thickness typically 0.25–0.40 mm. Although the homopolymer heat deflection temperature at 0.45 MPa is 100°C per ISO 75-2:2013, that value does not translate into stack-load hot-fill capacity; continuous hot-fill above 80°C produces measurable sidewall creep under stacking, so H019TG is not substituted for filled PP or talc-reinforced compounds under those conditions.
Heavy-gauge H019TG sheet lines producing 4–8 mm returnable transit trays for automotive component handling operate with a 120 mm single-screw extruder having a 33:1 L/D barrier screw; melt temperature is held at 215–228°C at the flat die while the polished roll stack is set to 38–55°C because roll temperatures below 35°C increase residual thermal stress and cause dimensional movement in downstream adhesive-coated trays. The formulation is based on 100 phr H019TG, 0.15–0.25 phr high-stability antioxidant masterbatch, 0.05–0.10 phr zinc stearate acid scavenger, and 2.0–4.0 wt% black masterbatch; the extruded sheet retains tensile yield strength of 35 MPa and flexural modulus of 1,550 MPa per ISO 527-2:2012 and ISO 178:2019, respectively. Edge trims and skeletal scrap are re-introduced at 15–25 wt% regrind only when melt temperature is maintained below 245°C, because excessive chain scission at higher temperatures causes the 1.9 g/10 min ISO 1133-1:2022 MFR to drift upward beyond 2.3 g/10 min and reduces sheet sag resistance. Shuttle-type thermoforming machines with clamp force of 1,500–2,500 kN form the sheet at surface temperatures of 160–175°C, using vacuum of -0.8 bar and machined polyamide plug assist at 75–85°C; cycle times for 6 mm sheet are generally 65–85 s, with rejected parts occurring when the sheet temperature at the clamp frame falls below 145°C. The finished trays are controlled under REACH 1907/2006 for SVHC content and EU Packaging and Packaging Waste Directive 94/62/EC with a heavy metal sum limit of 100 mg/kg; no food-contact migration testing applies. Where electrostatic dissipative performance below 109 Ω surface resistivity is required, carbon black loading typically rises to 8–12 wt%, at which point melt strength is depressed and a dedicated conductive compound replaces neat H019TG. Terminal products are returnable automotive transit trays, pallet separators, and tier sheets with part masses of 2.5–5.0 kg per unit.
Low-denier lidding structures converted on roll-fed pressure formers from H019TG sheet with 0.3–0.7 mm thickness require a melt temperature of 220–235°C at the extruder die and a roll stack temperature of 28–35°C; the sheet enters the pressure forming station at 155–170°C surface temperature. The formulation is 100 phr H019TG, 0.5–1.5 wt% synthetic silica antiblock masterbatch, 0.1–0.3 wt% erucamide slip masterbatch, and 0.05–0.12 phr antioxidant masterbatch; slip loadings above 0.3 wt% are avoided where the lid is in direct contact with fatty foods because erucamide migration increases and compliance with EU No 10/2011 overall migration limit of 10 mg/dm² and FDA 21 CFR 177.1520(c) must be re-verified on the finished lid. Forming is performed with a polyetherimide plug at 70–85°C, plug assist ratio of 0.65–0.75, and positive pressure of 3.5–5.0 bar; draw ratios beyond 1.5:1 produce edge tears in H019TG because the grade is not a high-melt-strength PP and does not contain long-chain branching. The terminal products are hot beverage cup lids, creamer portion-pack lids, and clamshell inserts with sealing flange thickness tolerance held at ±0.05 mm. Pre-drying is not normally required unless surface moisture from storage above 60% RH has been observed; in that condition the pellet is dried at 80°C for 2–4 h in desiccant dryers with dew point below -30°C.
| Processing parameter | Thin-wall dairy cups | Heavy-gauge transit trays | Lidding structures |
|---|---|---|---|
| Extruder melt temperature at die | 225–235°C | 215–228°C | 220–235°C |
| Cooling roll temperature | 22–28°C | 38–55°C | 28–35°C |
| Thermoforming surface temperature | 150–165°C | 160–175°C | 155–170°C |
| Recommended draw ratio | 1.2:1 | 1.5:1 maximum | 1.5:1 maximum |
For stationery-grade H019TG solid sheet of 0.4–1.5 mm thickness, extrusion is carried out at 200–230°C through a flex-lip flat die, followed by calendering at 25–35°C and die-cutting into ring-binder covers and display folders; the formulation contains 0.05–0.10 phr calcium stearate and 2.0–3.0 wt% color masterbatch, and the finished articles are controlled under REACH 1907/2006 with no food-contact migration testing required.
| Application category | Regulation/standard | Test designation or limit | Validation condition |
|---|---|---|---|
| Thin-wall dairy cups | FDA 21 CFR 177.1520(c); EU No 10/2011 | Overall migration 10 mg/dm² | Simulant B, 40°C, 10 days |
| Heavy-gauge transit trays | REACH 1907/2006; EU Packaging 94/62/EC | Heavy metal sum 100 mg/kg | No food-contact migration |
| Lidding structures | FDA 21 CFR 177.1520(c); EU No 10/2011 | Overall migration 10 mg/dm²; specific migration of erucamide | Finished lid contact simulant |
| Stationery and display sheet | REACH 1907/2006 | SVHC content | No food-contact migration required |
Replacement of PVC in roll-fed bakery tray lines requires a sheet extrusion melt temperature of 210–230°C and a polished cooling roll temperature of 20–30°C; the 0.5–0.9 mm H019TG sheet is then heated to 155–170°C and formed on plug-assisted vacuum-pressure machines with 1.2:1 draw ratios, where the lower density of PP at 0.905 g/cm³ per ISO 1183-1:2019 reduces finished tray mass relative to PVC of equivalent wall thickness. The formulation comprises 98.0–99.0 wt% H019TG, 0.10–0.20 phr antioxidant masterbatch, 0.1–0.2 wt% non-migratory slip masterbatch, and 1.0–2.0 wt% white masterbatch; no plasticizer is required, which avoids the plasticizer migration concerns associated with PVC. For direct food contact, the finished bakery tray is tested under EU No 10/2011 overall migration with 10 mg/dm² limit using simulant A for aqueous or acidic fillings and simulant D1 or D2 for fatty creamers; FDA 21 CFR 177.1520(c) applies to the polyolefin base. Specific migration of slip additives and colorant degradation products must be verified when the tray is intended for fatty bakery products because polyolefins show higher migration in high-fat simulants than in aqueous simulants; published specific migration data for H019TG in high-fat bakery contact is limited, so verification on the finished tray is required. The process window is tolerant to regrind up to 20 wt% if the recovered trim is blended with virgin H019TG and the melt temperature remains below 245°C; above that temperature the sheet shows yellowing and progressive reduction in melt strength. Terminal products are hinged bakery trays, muffin and pastry punnets, and display containers for in-store bakeries, with oxygen permeability of PP limiting shelf-life compared with high-barrier multilayer structures.
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REPOL PP Homopolymer H019TG is a polypropylene homopolymer supplied by Reliance Industries Limited. The supplier’s grade nomenclature uses H for homopolymer chemistry, 019 as the nominal melt-flow indicator, and TG as the tape-grade suffix. The precise stabiliser composition is proprietary and is not disclosed in the technical data sheet. Melt mass-flow rate is determined at 230 °C under a 2.16 kg load in accordance with ISO 1133-1:2011 or ASTM D1238-23, giving a nominal value of 1.9 g/10 min. The density is 0.90 g/cm³ when tested to ISO 1183-1:2019 or ASTM D792-20. The melt flow rate already distinguishes the product from high-flow injection-moulding polypropylene grades: it is intentionally kept low to preserve melt strength during tape orientation, not to promote rapid cavity filling in injection tools.
The 1.9 g/10 min melt mass-flow rate measured at 230 °C under 2.16 kg is not solely a flowability descriptor. In polypropylene homopolymers, lower melt flow rates correspond to higher zero-shear viscosity and higher extensional melt strength. During tape orientation, the molten extruded sheet is stretched in a temperature window between the crystalline melting onset and the cold-crystallisation boundary. A grade with a 1.9 g/10 min melt flow rate retains sufficient melt stress under draw to suppress draw resonance and to permit orientation ratios in the range of 1:6 to 1:8 on conventional single-screw tape lines. The same property reduces die drool and improves dimensional uniformity of the quenched base tape before stretching. These characteristics are absent in higher-flow grades, which exhibit lower extensional viscosity and may require reduced draw ratios or lower line speeds to avoid tape breakage.
Mechanical property values are generated on specimens conditioned at 23 °C and 50 % relative humidity for 40 h according to ISO 291:2008 or ASTM D618-21. Because polypropylene homopolymer is not hygroscopic, conditioning primarily affects test reproducibility rather than the polymer itself. The flexural modulus is a one-percent secant modulus measured at a crosshead speed of 2.0 mm/min under ASTM D790-17 Procedure A. The notched Izod impact value is a laboratory single-point value and cannot be linearly scaled to predict impact response of a woven sack or FIBC under dynamic loading. For load-bearing design, tensile creep data from ISO 899-1:2017 or long-term hydrostatic strength testing should be used.
| Property | Test method | Unit | Typical value |
|---|---|---|---|
| Melt mass-flow rate at 230 °C, 2.16 kg | ISO 1133-1:2011 / ASTM D1238-23 | g/10 min | 1.9 |
| Density at 23 °C | ISO 1183-1:2019 / ASTM D792-20 | g/cm³ | 0.90 |
| Tensile stress at yield | ASTM D638-14, 50 mm/min | MPa | 35 |
| Tensile elongation at yield | ASTM D638-14 | % | 10 |
| Flexural modulus, secant | ASTM D790-17 Procedure A | MPa | 1400 |
| Notched Izod impact at 23 °C | ASTM D256-23 | J/m | 26 |
| Rockwell hardness, R scale | ASTM D785-23 | — | 105 |
| Vicat softening point | ASTM D1525-17 | °C | 154 |
| Heat deflection temperature at 0.455 MPa | ASTM D648-18 | °C | 104 |
| Melting peak temperature by DSC | ISO 11357-3:2018 | °C | 165 |
Values in Table 1 are typical injection-moulded or compression-moulded laboratory data published by the manufacturer. They are not specification limits. For lot-specific acceptance, the certificate of analysis for the supplied lot should be checked, because batch-to-batch variation in melt flow rate is normally controlled within a narrow range but not to the exact nominal value. Incoming resin should be verified for melt flow rate and ash content before being released to tape extrusion. Ash content is determined by ISO 3451-1:2019 and is typically below 0.05 % for unfilled homopolymer grades. A deviation in ash content above 0.10 % can indicate contamination or additive agglomeration and may affect tape surface roughness.
On a single-screw extruder with L/D 24:1 to 30:1, the barrel profile typically increases from 190 °C in the feed zone to 250 °C at the die. The die gap is commonly set between 0.8 mm and 1.2 mm, and the water-bath quench temperature is maintained between 30 °C and 40 °C to fix a fine crystalline morphology that can be subsequently oriented. Orientation-stretching occurs in a hot-air oven or on a hot-roller assembly at 120 °C to 140 °C. Under these conditions, the low melt flow rate of H019TG supports stable extensional flow and allows tape drawing without excessive necking. The die gap and draw ratio are interdependent. Excessively high draw ratio above 1:8 may increase tape fibrillation and lower transverse strength because macrofibrils are over-oriented; draw ratio below 1:5 may leave residual unoriented spherulites that reduce tape tenacity.
At recommended melt temperatures of 220 °C to 250 °C, the die pressure on a 65 mm single-screw extruder is typically between 80 bar and 150 bar, depending on screw speed, screen pack, and die gap. Melt filtration with screen packs of 80/120/80 mesh is used to remove gels and agglomerates. An increase in die pressure without a change in screw speed may indicate screen pack fouling. Because the grade has lower melt flow than injection-moulding grades, it requires adequate barrel residence time to plasticise; operations should avoid excessive screw speed that increases shear heating. Polypropylene homopolymer can undergo thermo-oxidative degradation if melt temperature exceeds 260 °C for long residence times. Published data for this specific configuration is limited, so start-up trials should use the manufacturer’s recommended temperature profile and draw ratio rather than transferring settings from high-flow injection-moulding grades.
Applications with woven-sack construction require the base tape to achieve a minimum tensile strength per denier and low elongation under load. In circular looms used for high-speed sack manufacturing, tape produced from H019TG is drawn to a width of 2.0 mm to 3.0 mm and a thickness of 20 µm to 50 µm, with tensile tenacity tested according to ASTM D882-18 or ISO 527-3:2018. The grade is also used for flexible intermediate bulk container (FIBC) tapes, where higher tenacity and resistance to creep are required because the filled container may be lifted repeatedly. Carpet backing and twine converting use the same base tape but do not necessarily require the same orientation ratio; lower draw ratios may be selected to retain higher transverse strength.
The distinction between H019TG and other REPOL PP homopolymer grades is most evident in melt flow rate and its consequences for conversion. Table 2 compares nominal melt flow rates and primary conversion routes for selected grades. The low melt flow rate of H019TG places it in the tape-group, whereas H045SG, H100EY, H200MA, and H350FG are formulated for injection molding. Elevated melt flow rates in those grades reduce cycle time and improve thin-wall filling, but they also reduce melt strength, die swell, and extensional stability, making them unsuitable for high-draw tape orientation. H030SG, with a nominal melt flow rate of 3.0 g/10 min, is used in similar raffia applications but H019TG is preferred when the conversion line requires higher draw ratios or when the final tape must meet a higher minimum tenacity specification.
| Grade | Nominal melt mass-flow rate at 230 °C/2.16 kg (g/10 min) | Primary conversion route | Typical application area |
|---|---|---|---|
| H019TG | 1.9 | Tape extrusion and orientation | High-tenacity woven sacks, FIBC, ropes, carpet backing |
| H030SG | 3.0 | Tape/raffia extrusion | Woven sacks, monofilaments, twines |
| H045SG | 4.5 | Injection molding | General-purpose housewares, closures, furniture components |
| H100EY | 10 | Injection molding | Thin-wall technical components and appliance parts |
| H200MA | 20 | Injection molding | High-cavitation closures and thin-wall containers |
| H350FG | 35 | Injection molding | Thin-wall food packaging and high-flow molded parts |
Compared with REPOL PP random copolymers, H019TG has higher crystallinity, higher flexural modulus, higher heat deflection temperature, and lower low-temperature impact strength. The homopolymer’s stiffness and thermal resistance are advantageous in tape and woven applications, but the grade should not be used in applications requiring transparency, low sealing initiation temperature, or sub-zero impact resistance. Compared with heterophasic copolymers, H019TG has superior creep resistance at room temperature but inferior impact toughness at -20 °C. Selection between H019TG and a copolymer should be based on the ratio of tenacity requirement to impact requirement, not on melt flow alone.
Regulatory compliance for a raw polymer is not a single property; it depends on the final article, its service temperature, food-contact type, and regional jurisdiction. For food-contact applications, REPOL PP H019TG may be formulated to meet the compositional requirements of FDA 21 CFR 177.1520 for polypropylene homopolymer, but compliance must be confirmed with the supplier’s current regulatory certificate for the specific lot and the intended conditions of use. Under EU Regulation (EU) No 10/2011, overall migration in the final article must be tested according to EN 1186-1; the resin alone does not guarantee compliance. For electrical and electronic equipment within scope of RoHS Directive 2011/65/EU, the finished product must be assessed; a polypropylene homopolymer generally does not contain the restricted metals or phthalates but the burden lies on the component manufacturer to verify via supplier declaration.
The grade is not formulated for medical devices or pharmaceutical packaging unless the supplier has issued a specific medical-grade certificate. It is not classified as biodegradable or compostable under EN 13432:2000. For waste management, it is recyclable in the polypropylene recycling stream under the SPI code 5, but recycled material may not retain the same tensile property profile.
The operational boundary for drying is modest because polypropylene homopolymer is not hygroscopic. If bulk storage has been exposed to condensation or if regrind content exceeds 20 %, a drying step at 80 °C for 2 h to 4 h may be required to remove surface moisture and avoid silver streaks in the extruded tape. The grade should not be melt-blended with copper-containing pigments or certain untreated talc fillers without first validating thermal stability, because transition-metal residues can accelerate thermo-oxidative degradation. Regrind from oriented tape can be re-incorporated in the core layer of multi-layer tape but should not be used in the outer layers where surface defects and tensile strength loss are unacceptable. Storage should be in closed packaging in a dry environment below 50 °C, away from direct sunlight and ultraviolet exposure, because PP homopolymer is susceptible to UV-induced chain scission unless a UV stabiliser has been added at the converter’s facility.
