| HS Code | 191337 |
| Density | 0.91 g/cm³ |
| Melt Flow Rate | 3.0 g/10min (230°C, 2.16kg) |
| Tensile Yield Strength | 30 MPa |
| Elongation At Yield | 12% |
| Flexural Modulus | 1300 MPa |
| Izod Impact Strength | 3.0 kJ/m² (23°C) |
| Rockwell Hardness | R95 |
| Heat Deflection Temperature | 100°C (0.45MPa) |
| Vicat Softening Point | 155°C |
| Melting Point | 165°C |
As an accredited Sinopec PP PPH-T03 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 25 kg woven polypropylene bags, moisture-proof, palletized and stretch-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | Sinopec PP PPH-T03 granules packed in 25kg bags, loaded securely in a 20′ FCL container for safe transport. |
| Shipping | Sinopec PP PPH-T03 is shipped as free-flowing pellets in 25 kg woven bags, jumbo bags, or bulk containers. Keep dry, avoid direct sunlight, and store below 40°C. Non-hazardous under transport regulations, but use clean, covered containers to prevent contamination and moisture damage. |
| Storage | Store Sinopec PP PPH-T03 in a cool, dry, well-ventilated area away from direct sunlight, heat, and open flames. Keep containers sealed to prevent moisture contamination. Avoid contact with oxidizing agents and static discharge. No special storage restrictions apply, but maintain good housekeeping to minimize dust accumulation and fire risk. |
| Shelf Life | Shelf life is indefinite if stored in a cool, dry place away from UV light and extreme heat. |
Sinopec PP PPH-T03 is introduced as the base polymer at the flat-tape extrusion stage of woven polypropylene sack manufacture. Published datasheet values for PPH-T03 indicate a melt mass-flow rate of 3.0 g/10 min at 230 °C under 2.16 kg load (ISO 1133-1:2022), which places the grade within the fractional-MFR window required for high-draw tape lines rather than injection molding. In woven sack compounding, the formulation is built from PPH-T03 as the balance resin, with a calcium carbonate masterbatch at 2–5 wt%, a color masterbatch at 1–3 wt%, and a processing stabilizer package at 0.05–0.20 wt%; food-contact constructions intended for grain, flour, or sugar packaging either omit filler masterbatch or restrict it to a carrier that complies with FDA 21 CFR 177.1520 and EU Regulation 10/2011. The tape line uses a single-screw extruder with an L/D ratio of 30:1 to 36:1, a barrel temperature profile of 210–250 °C, a slit die with a die gap of 0.5–1.0 mm, and a water-bath quench at 28–38 °C; after dewatering, the tapes enter a hot-air or hot-cylinder orientation oven at 110–140 °C and are stretched at a draw ratio of 5:1 to 8:1 before relaxation of 2–4% and winding. The oriented tapes, typically 650–900 denier, are woven on shuttleless circular looms into tubular or flat fabric, and the fabric is tested for strip tensile and seam strength under ISO 13934-1:2013 and ISO 13935-1:2014 before printing, lamination, or conversion into 25 kg and 50 kg sacks for cement, fertilizer, resin pellets, grain, and low-moisture chemical powders. A process boundary observed on cement-sack filling lines is that filler masterbatch additions above 6 wt% reduce tape elongation sufficiently to cause drop-test splits at the weave intersection after 1.2 m free-fall impact; therefore filler loading is capped below 5 wt% where stack fill speed exceeds 600 bags/h.
The specification of PPH-T03 in flexible intermediate bulk container tape yarn is governed by a direct conflict between safe working load retention, ultraviolet stabilization, and filler-induced tensile loss. Single-trip and multi-trip FIBC constructions demand a nominal safety factor of 5:1 or 6:1 under ISO 21898:2004/Amd 1:2015, while dangerous-goods constructions are additionally classified under the UN 13H3/H4 scheme in the UN Model Regulations. In high-yield tape formulation, PPH-T03 is used as the balance resin, calcium carbonate filler masterbatch is limited to 0–3 wt%, a HALS-based UV stabilizer masterbatch is added at 0.2–0.8 wt%, and color masterbatch is held at 1–2 wt%; each 1 wt% of inert filler above 3 wt% is treated as a tape-tenacity control boundary under ISO 527-3:2018 because lifting tapes in the 1,100–1,500 denier range lose seam and loop strength needed for rated safe working loads. Extrusion uses a barrier-screw single-screw extruder at 32:1–38:1 L/D with barrel temperatures from 215 °C to 255 °C, followed by water-bath quenching at 30–36 °C and two-stage hot-air drawing at 6:1–9:1 with controlled relaxation of 3–5% to stabilize heat shrinkage before weaving on heavy-duty circular looms. Overdosing the HALS package above 0.8 wt% causes die-lip deposit and intertape slip on circular looms, leading to warp tension drift and panel basis-weight variation. The woven panels are cut, gusseted, sewn with safety lock stitches, and subjected to cyclic top lift, compression, and drop tests under ISO 21898; electrically dissipative FIBCs are verified against the electrostatic criteria referenced in IEC 61340-4-4:2012. Terminal product types include standard bulk bags for minerals, fertilizers, and plastic resins; antistatic bags for chemical powders; and food-grade FIBCs for sugar, salt, and dry food ingredients under FDA 21 CFR 177.1520 and EU Regulation 10/2011.
| FIBC type | Static control mechanism | Reference basis |
|---|---|---|
| Type A | No static protection; not suitable for flammable or combustible atmospheres | ISO 21898:2004/Amd 1:2015; IEC 61340-4-4:2012 |
| Type B | Low breakdown voltage to prevent propagating brush discharge; not for energetic dust cloud ignition scenarios | IEC 61340-4-4:2012 |
| Type C | Conductive fabric, mandatory grounding tab, dissipative interconnect | IEC 61340-4-4:2012 |
| Type D | Dissipative fabric, no grounding required, controls incendiary discharge | IEC 61340-4-4:2012 |
During the conversion of PPH-T03 into agricultural baler twine and polyolefin cordage, the primary processing objective is orientation-induced crystallinity sufficient to permit controlled fibrillation without sacrificing knot strength. PPH-T03 is formulated as the balance resin with a HALS UV masterbatch at 0.2–0.6 wt%, pigment at 0.5–2.0 wt%, and an optional processing aid at 0.05–0.15 wt%; filler masterbatch is omitted because talc or calcium carbonate above 1 wt% nucleates the tape surface and produces erratic fibrillation at the pin roller, resulting in broken fibril bundles and ovality in the twisted twine. The extrusion and orientation sequence uses a 30:1–36:1 L/D single-screw extruder with a flat-tape die, a water bath at 25–35 °C, and hot-air drawing at 110–145 °C with a draw ratio of 6:1–10:1; after orientation, the tapes are slit and passed over a pin roller to create a controlled split network before ring twisting at 100–160 twists/m. Knot strength is measured on the finished twine under ISO 4167:2006, and the tensile characteristics of the un-twisted tape are checked under ISO 527-3:2018; outdoor weathering qualification follows ASTM G154-16 with retention targets set by the end-use bale storage interval. The fractional melt flow rate of 3.0 g/10 min is low enough to survive the draw process but high enough to avoid excessive die pressure, making the grade suitable for 1,000–2,500 denier baler twine and cordage tapes. Finished product types include round baler twine for high-density baling, coarse rope and horticultural string, and UV-stabilized twine for silage and orchard applications.
At the woven backing stage of tufted carpet production, PPH-T03 tape yarn competes against lower-MFR homopolymers because its melt strength allows stable flat-tape geometry on 30:1–36:1 L/D tape lines running at 150–250 m/min without catastrophic web splitting. The formulation for secondary carpet backing is filled more aggressively than packaging tape: PPH-T03 is used as the balance resin, calcium carbonate masterbatch at 4–8 wt%, pigment masterbatch at 1–2 wt%, and processing aid at 0.05–0.15 wt%; primary backing tapes, which sit closer to the tufting needles, use filler below 3 wt% to preserve puncture resistance and tuft-holding force. Extrusion and drawing follow a flat-tape process with 500–800 denier primary tapes and 600–1,000 denier secondary tapes, woven on wide looms up to 5.2 m width, heat-set to reduce shrinkage below 1.5% at 100 °C, and delivered as rollstock for tufting or lamination. Compliance is governed by the flooring manufacturer's specification, with tensile testing under ISO 13934-1:2013, mass determination under ISO 8543:1998, and, for automotive carpet backing, flammability under ISO 3795:1989 or FMVSS 302. A practical limitation is that calcium carbonate loadings above 8 wt% in secondary backing reduce flex fatigue resistance after repeated floor traffic and create dusting at the cut edge during carpet tile conversion. Terminal products include primary woven slit-tape backing for tufted carpets, secondary woven backing for broadloom and carpet tile, automotive carpet backing, and upholstery webbing substrates.
When the same PPH-T03 extrusion tape platform is redirected to woven geotextile production, the test matrix shifts from packaging burst and sack drop standards to geosynthetic index tests such as ISO 10319:2015 wide-width tensile and ISO 12236:2006 static puncture. In this civil-engineering segment, the formulation prioritizes long-term UV resistance and dimensional stability: PPH-T03 is used as the balance resin, a HALS/carbon black UV masterbatch is added at 0.3–1.2 wt%, color masterbatch at 1.0–2.5 wt%, and calcium carbonate is held below 4 wt% because filler reduces wide-width tensile energy absorption in fine-grained subgrade applications. Tape extrusion is run at 800–1,200 denier with draw ratios of 6:1–9:1, followed by weaving on rapier or circular looms into widths up to 5.2 m; the fabric is then heat-set, inspected for weave defects, and tested for tensile strength, elongation at maximum load, static puncture resistance, and UV resistance after 500 h of fluorescent ultraviolet exposure under ASTM G154-16. The orientation temperature window is maintained at 110–140 °C because undrawn regions below 105 °C produce soft tapes that deform under aggregate load, while overdrawn regions above 150 °C embrittle and fail during installation on angular aggregate. Terminal product types include woven geotextile rolls for separation of aggregate from subgrade, stabilization fabrics under haul roads and temporary works, erosion-control mats beneath riprap, and landfill capping reinforcement layers.
Direct food contact constraints in ventilated produce mesh packaging impose stricter additive boundaries than industrial sack applications because the finished mesh is typically not separated from the packed commodity by a continuous film barrier. PPH-T03 is formulated as the balance resin with a food-contact-compatible color masterbatch at 1–3 wt% and a HALS stabilizer at 0.1–0.3 wt% where UV protection during outdoor retail display is required; filler masterbatch is excluded unless the masterbatch carrier and mineral grade are documented under FDA 21 CFR 177.1520 and EU Regulation 10/2011, because open mesh allows direct contact between the polymer surface and produce. The extrusion process uses tape denier of 300–600 with lower orientation draw ratios of 4:1–6:1 to preserve flexibility and knot closure, followed by leno weaving on mesh looms and tubular or flat net converting. Weld-seal strength, mesh opening size, and color migration in fatty food simulants are tested according to the food-contact compliance plan and, where relevant, ISO 13934-1:2013 for mesh strip tensile. An operational boundary is that processing temperatures above 260 °C in the extruder or hot-air oven increase low-molecular-weight polypropylene volatiles and can push overall migration toward the 10 mg/dm² limit under EU Regulation 10/2011; therefore barrel profiles are capped at 255 °C and residence time is minimized. Terminal products include mesh bags for onions, citrus, garlic, potatoes, and oysters, as well as knitted or woven produce wrappers for retail display.
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Sinopec PP PPH-T03 is a pelletised polypropylene homopolymer identified under CAS 9003-07-0 and typically certified against GB/T 12670-2008. The grade designation PPH denotes homopolymer, while T03 denotes a nominal melt mass-flow rate of 3.0 g/10 min under ISO 1133-1:2022 conditions. The resin is manufactured by bulk-phase polymerisation with a Ziegler-Natta catalyst system and contains no intentional ethylene comonomer. Typical end uses include rigid injection-moulded packaging, caps and closures, housewares, appliance components, non-pressure pipe profiles, sheet, and thin-gauge thermoformed articles. Published manufacturer datasheets list a density of 0.90–0.91 g/cm³ (ISO 1183-1:2019), tensile yield stress not less than 30 MPa (ISO 527-2:2012), flexural modulus not less than 1200 MPa (ISO 178:2019), and Vicat softening temperature A50 not less than 150 °C (ISO 306:2022). Compared with impact copolymers, PPH-T03 offers higher heat resistance and higher modulus but lower low-temperature toughness.
Table 1 consolidates manufacturer-published specification limits and typical values for injection moulding and extrusion use. The lower and upper limits should be read as release criteria rather than design allowables, because conversion history, pigment loading, and regrind content can shift final-part properties.
| Property | Test method | Value/specification |
|---|---|---|
| Density | ISO 1183-1:2019 | 0.90–0.91 g/cm³ |
| Melt mass-flow rate 230 °C, 2.16 kg | ISO 1133-1:2022 | 2.5–3.5 g/10 min |
| Tensile yield stress | ISO 527-2:2012, 50 mm/min | ≥30 MPa |
| Tensile elongation at yield | ISO 527-2:2012 | 8–12 % |
| Flexural modulus | ISO 178:2019, 2 mm/min | ≥1200 MPa |
| Notched Charpy impact strength, 23 °C | ISO 179-1:2020 | ≥2.0 kJ/m² |
| Vicat softening temperature A50 | ISO 306:2022, 10 N | ≥150 °C |
| Heat deflection temperature, 0.45 MPa | ISO 75-2:2013 | ≥85 °C |
| Ash content | ISO 3451-1:2019 | ≤0.03 wt % |
| Water absorption, 24 h immersion | ISO 62:2008 | ≤0.03 % |
| Mould shrinkage, parallel/transverse | ISO 294-4:2018 | 1.0–1.5 % |
Lot-to-lot MFR variation is normally controlled to ±0.5 g/10 min around the nominal 3.0 g/10 min on most production campaigns. The notched Charpy value is a 23 °C release test; below 0 °C the same geometry typically exhibits values below 2 kJ/m², restricting PPH-T03 in outdoor impact-loaded parts unless reinforcement or impact modification is added.
On injection moulding lines with reciprocating screws of 20:1 to 24:1 L/D and compression ratio 2.5:1 to 3.5:1, PPH-T03 is processed with barrel set points of 180–230 °C from feed throat to metering zone, nozzle temperature 200–230 °C, and mould temperature 20–50 °C. The low MFR of 3.0 g/10 min produces higher pressure drop than high-flow grades; injection pressure is typically 60–120 MPa, holding pressure 50–70 % of the injection peak, and back pressure 0.5–2.0 MPa. Screw speed is limited to 30–80 rpm to avoid shear heating above 240 °C in the metering section. Production-scale failures are observed when the hopper throat exceeds 60 °C, causing pellet softening and irregular screw feed. Processing above 250 °C or cumulative residence time greater than 5 minutes shifts the MFR upward and increases yellowness index; the degradation is thermo-oxidative chain scission, not crosslinking, and cannot be reversed by lowering temperature. Hot runner manifolds should be balanced within ±5 °C to avoid local MFR drift of 0.3–0.8 g/10 min in stagnant zones. When regrind content exceeds 20 wt%, a dehumidified-air hopper dryer set at 80 °C for 2 hours is used to remove surface moisture because moisture uptake above 0.01 wt% can create silver streaks in thick sections.
Substitution of a random copolymer with PPH-T03 changes the failure mode from ductile to brittle at temperatures below 0 °C. The homopolymer has no ethylene comonomer; the result is higher crystalline fraction and a Vicat softening point 10–20 °C above that of typical random copolymers. In a 1 mm injection-moulded plaque, haze rises to more than 50 %, whereas random copolymer haze is typically 5–15 % under ASTM D1003. Table 2 provides representative class-level comparisons; exact competitor grade datasheets must be consulted for converter specifications.
| Material class | Comonomer content | Flexural modulus | Notched Charpy impact 23 °C | Vicat A50 | Optical haze 1 mm |
|---|---|---|---|---|---|
| PPH-T03 homopolymer | 0 wt% | 1200–1500 MPa | 2–4 kJ/m² | 150–155 °C | >50 % |
| Random copolymer PP | 1–4 wt% ethylene | 800–1000 MPa | 5–10 kJ/m² | 125–140 °C | 5–15 % |
| Impact copolymer PP | 5–15 wt% ethylene-propylene rubber | 900–1100 MPa | 10–25 kJ/m² | 140–150 °C | 30–60 % |
The lower low-temperature toughness of PPH-T03 means it should not replace impact copolymers in automotive bumper fascia, child safety seats, or freezer containers with drop-impact requirements below −10 °C. The higher modulus and Vicat softening, however, allow wall-thickness reduction of 0.2–0.4 mm in non-impact-loaded housings compared with random copolymers, provided filling analysis confirms that the 3.0 g/10 min MFR can fill the cavity at acceptable pressure. Do not assume direct equivalence with other Sinopec PP homopolymer grades such as PPH-T30S or PPH-F03 without comparing lot-specific datasheets; although melt flow rate may be similar, additive packages and residual catalyst levels can differ. Compared with MFR 12–25 g/10 min homopolymer grades used for thin-wall packaging, PPH-T03 delivers higher impact strength and yield stress but yields longer screw recovery times and higher injection pressures. In spiral flow moulds of 2 mm thickness at 230 °C and 80 MPa, flow length is typically 30–40 % shorter than MFR 12 material; published data for this specific configuration is limited and should be generated on the production tool.
Sheet and profile extrusion of PPH-T03 uses single-screw extruders with L/D of 24:1 to 30:1 and barrel temperatures 180–230 °C. The die temperature is set at 200–230 °C; melt temperature measured at the die exit should not exceed 240 °C. Chill roll temperatures of 20–40 °C are maintained for sheet thicknesses of 0.3–2.0 mm to control crystallite size and post-formed shrinkage. In thermoforming, sheet surface temperature is 150–180 °C; below this band the sheet does not develop adequate draw ratio, and above it sagging becomes severe because the homopolymer has low melt strength. The operational boundary for continuous service under load is 90 °C; above this temperature creep modulus declines rapidly. Parts requiring long-term heat aging above 100 °C need antioxidant packages designed for hot-air exposure, and validation per ISO 188:2023 or equivalent is required. The grade resists dilute acids, alkalis, and polar solvents at 23 °C, but aromatic hydrocarbons and chlorinated solvents swell the matrix by more than 5 % and should not be used for continuous immersion.
Regulatory release and end-use verification for PPH-T03 depend on the additive package used in production. The base polypropylene homopolymer falls under FDA 21 CFR 177.1520 for olefin polymers; however, the final article must meet the overall migration limit of 10 mg/dm² and specific migration limits for additives under (EU) No 10/2011 when food contact is claimed. Under RoHS Directive 2011/65/EU, the polymer matrix is not an electrical/electronic homogeneous material but must be assessed with the finished assembly for lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE limits. REACH Regulation (EC) No 1907/2006 requires SVHC content below 0.1 wt% per article; lot certificates from the manufacturer are used for documentation. The grade is not considered hazardous under CLP Regulation (EC) No 1272/2008 in solid pellet form, but dust or off-gas generated during melt processing requires local exhaust ventilation.
In closure and cap manufacturing with 0.8–1.2 mm wall sections, PPH-T03 is processed on high-cavitation injection moulds with hot runners and valve gates. Mould temperatures of 25–40 °C and holding pressures of 30–50 MPa are used to control sink marks around the tamper-evident hinge. The hinge itself is flexed several times after ejection to orient the lamellar structure; production-scale experience indicates that hinge white blush is minimised when cooling time is held at 3–6 seconds and demoulding occurs at part surface temperature below 70 °C. The low MFR limits flow length in multi-cavity tools; a flow length-to-wall-thickness ratio above 150:1 at 230 °C may require gate relocation or a higher-flow grade. Moisture-related silver streaks are uncommon in dry pellets but can appear after cold storage; hopper drying at 70–80 °C for 2 hours eliminates surface condensation. The final article is subject to converter-side verification for food-contact migration limits under (EU) No 10/2011 and FDA 21 CFR 177.1520, because additive composition and processing history affect overall migration.
