| HS Code | 791670 |
| Melt Flow Rate 230 C 2 16kg | 2.8 g/10min |
| Density | 0.90 g/cm³ |
| Tensile Yield Strength | 31 MPa |
| Elongation At Break | ≥500% |
| Flexural Modulus | 1300 MPa |
| Izod Impact Strength 23 C | 3.0 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 110°C |
| Melting Point | 165°C |
| Gloss 45 | ≥85% |
| Haze | ≤4% |
| Isotacticity Index | ≥96% |
| Ash Content | ≤0.01% |
As an accredited Sinopec PP Homopolymer F03D factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Sinopec PP Homopolymer F03D is supplied in 25 kg woven polypropylene bags, palletized, stretch-wrapped, and protected from moisture during storage and transport. |
| Container Loading (20′ FCL) | 20′ FCL shipment of Sinopec PP Homopolymer F03D, packed in 25kg bags on pallets, securely loaded and containerized. |
| Shipping | Sinopec PP Homopolymer F03D is shipped as free-flowing virgin resin pellets in sealed polypropylene woven bags or jumbo bags, palletized and containerized. It is non-hazardous, moisture-sensitive, and should be stored dry, clean, and away from heat sources. Ensure proper ventilation and secure loading to prevent bag damage during transit. |
| Storage | Store Sinopec PP Homopolymer F03D in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep bags sealed and off the floor on pallets to prevent moisture contamination. Avoid prolonged storage under high temperatures. Follow first-in, first-out inventory rotation to maintain product quality and consistency. |
| Shelf Life | Shelf life is >2 years if stored in a cool, dry place away from sunlight and heat, with sealed packaging. |
Sinopec PP Homopolymer F03D is converted into transparent biaxially oriented polypropylene film on sequential tenter lines where the core layer constitutes 70–80 wt% of the coextruded structure. A three-layer A/B/C die with a 2400 mm working width is fed by single-screw extruders having 33:1 L/D ratios and gear pumps that hold melt pressure within 120–180 bar. The core extruder barrel begins at 200°C and rises to 245°C; the die is maintained at 250°C to restrict die-lip buildup. The cast sheet is pinned to a 900 mm chill roll at 18–25°C with an air knife. This quench range is a critical threshold. Below 18°C, the surface skin freezes before core heat is removed and haze rises. Above 25°C, sheet sticking produces transverse scratch defects. The sheet moves through an MD stretch unit at 125–145°C and a TD tenter at 160–175°C. MD draw ratio is set at 4.5–5.5; TD draw ratio is set at 7.0–9.0. When MD draw exceeds 5.5, microvoiding appears in the core and gloss drops on the skin layers. When TD draw falls below 7.0, free shrinkage above 4% at 120°C is recorded by ISO 11501.
For food overwrap and lamination base, the outer layers are ethylene-propylene random copolymer with seal initiation at 110–125°C, while F03D homopolymer in the core supplies stiffness. Skin layers contain 0.15–0.25 wt% synthetic silica antiblock and 300–600 ppm erucamide slip. Erucamide migration stabilizes coefficient of friction below 0.3 after 48 h at 25°C measured under ISO 8295. The core is kept slip-free to preserve interlayer adhesion. At 20 µm final thickness, the film shows haze below 1.5% by ASTM D1003 and transverse tensile strength above 120 MPa under ISO 527-3. Compliance for direct food contact is determined under FDA 21 CFR 177.1520, EU 10/2011, and GB 4806.7. The homopolymer core itself has seal initiation above 135°C; therefore a copolymer skin is required for heat-sealable biaxially oriented film. The converted film is used as transparent overwrap, as a print web, or as a lamination layer in flexible packaging.
Cavitated biaxially oriented polypropylene label facestock is produced from F03D in the core with a calcium carbonate masterbatch loading of 8–12 wt%. The masterbatch carries 60–70 wt% CaCO3 in a polypropylene carrier; the active calcite content in the core is therefore 5–8 wt%. During TD stretching at 8.0–10.0 draw ratio and 150–170°C, interfacial separation around calcite particles generates gas-filled microvoids that lower film density to 0.55–0.70 g/cm³ measured under ISO 1183. Below 8 wt% masterbatch, opacity is insufficient for light-blocking label stock. Above 12 wt%, transverse tear resistance falls and calcite agglomerates appear as surface specks. The three-layer structure has solid skins of 5–10 µm and a cavitated core of 35–60 µm. Skin surfaces are corona-treated to 38–44 mN/m per ISO 8296. UV flexo ink adhesion under tape pull fails below 38 mN/m; above 44 mN/m, oxidation products may block laminating adhesives. The slit facestock is used for pressure-sensitive beverage labels, home-care bottle labels, and in-mold label applications. For food-contact label uses, the F03D core is evaluated under FDA 21 CFR 177.1520 and EU 10/2011. The adhesive and printed surface are the main compliance variables when the label remains on the outside of the package.
On a water-quench flat tape line, F03D is extruded through a slit die with a die gap of 0.8–1.2 mm into a water bath maintained at 25–40°C. The single-screw extruder has a 30:1 L/D ratio and a barrel profile from 180°C to 240°C. Melt temperature at the die is held at 225–245°C. The quenched web is slit and then oriented in a hot-air oven at 110–130°C. A draw ratio of 1:6–1:8 is typical for woven sack tape. Below 1:6, tape tenacity remains below 5.0 g/den and breaks during high-speed circular loom insertion. Above 1:8, fibrillation increases and loom dust generation rises. The oriented tape passes over heated godets at 100–110°C and is relaxed by 2–4%. The formulation for fertilizer sack fabric includes 2–5 wt% calcium carbonate masterbatch, 0.3–0.5 wt% UV stabilizer masterbatch with a hindered amine light stabilizer package, and 0.5–1.5 wt% titanium dioxide masterbatch for white sack production. Exact masterbatch dilution is set by converter trial because published data for this specific F03D tape configuration is limited. The tapes are woven into tubular fabric on circular looms. FIBC fabric is tested for tensile strength under ISO 13934-1, and UV resistance is validated under ASTM G154. Food-grade rice and flour sacks must comply with GB 4806.7 when sold in China.
The water bath temperature is the main process conflict. At 25°C, the quenched sheet forms a fine spherulite structure that permits later fibrillation resistance at high draw. At 40°C, larger crystallites reduce drawability and require lower line speed. The line is equipped with chill rolls after the water bath to remove surface water before slitting. Residual moisture on the tape enters the orientation oven and causes steam bubbles. A slitting blade gap of 0.10–0.20 mm is maintained; worn blades above 0.20 mm create edge cracks that propagate during weaving. Woven sack fabric basis weight is typically 50–120 g/m². Finished FIBC capacities of 500–2000 kg require additional safety factor testing under ISO 21898.
| Converted Form | Melt Temperature | Orientation Draw Ratio | Additive Loading | Final Thickness |
|---|---|---|---|---|
| BOPP transparent packaging | 235–260°C | MD 4.5–5.5 / TD 7.0–9.0 | silica 0.15–0.25 wt%, erucamide 300–600 ppm | 15–30 µm |
| BOPP cavitated label | 230–255°C | MD 4.0–5.0 / TD 8.0–10.0 | CaCO3 masterbatch 8–12 wt% | 50–80 µm |
| Water-quench flat tape | 225–245°C | 1:6–1:8 | CaCO3 2–5 wt%, UV 0.3–0.5 wt%, TiO2 0.5–1.5 wt% | 50–150 µm |
| Oriented PP strapping | 230–250°C | 1:7–1:9 | antioxidant 0.2–0.4 wt%, calcium stearate 0.1–0.2 wt% | 0.6–1.2 mm |
F03D is converted into oriented polypropylene strapping on a sheet extrusion line with a water-quench tank at 20–35°C. The extruded sheet is cooled, then heated in a multi-roll orientation oven to 120–140°C and drawn in the machine direction. A draw ratio of 1:7–1:9 is standard for oriented PP strapping used as a polyester banding substitute. At 1:9, tensile strength approaches a plateau and transverse splitting energy falls rapidly. Above 1:9, longitudinal fibrils separate under edge nicks, and reel-to-reel unwinding generates dust. The extruder melt temperature is kept at 230–250°C, with the slit die held at 240°C. The formulation includes 0.2–0.4 wt% hindered phenolic antioxidant and 0.1–0.2 wt% calcium stearate acid scavenger. Strapping thickness is 0.6–1.2 mm, and width is 5–15 mm. The oriented strap is embossed between patterned rollers before winding to improve bundle grip. Tensile break strength is measured at 23°C with a 100 mm gauge length and 50 mm/min crosshead speed under ISO 527-3. The product is used for box closure, pallet unitization, and bundle strapping. F03D homopolymer strapping should not be maintained under prolonged tension above 60°C, because creep rupture becomes the dominant failure mode.
The orientation oven comprises multiple temperature zones. Zone 1 is held at 120°C to preheat the sheet without surface melting; Zone 2 is held at 135°C for drawing; Zone 3 is held at 110°C for annealing and relaxation of 2–3%. If Zone 2 exceeds 140°C, the strap surface sticks to the rolls and deformation mark defects occur. If Zone 2 is below 125°C, birefringence is too low and strapping tensile strength falls below 350 MPa after 24 h at 23°C. Winding tension is set at 5–10 N per strap. Typical elongation at break is 15–25% under ISO 527-3.
Homopolymer F03D can be extruded into cast sheet for cup and tray thermoforming when sub-zero impact resistance is not required. The sheet line uses a single-screw extruder with a 30:1 L/D ratio, a melt temperature of 230–250°C, and a three-roll polishing stack maintained at 20–60°C. Sheet thickness is 0.4–1.2 mm. A nucleating agent masterbatch is added at 0.05–0.15 wt% to raise crystallization temperature and shorten thermoforming cycle time. The sheet is heated to 160–170°C before forming in a plug-assisted mould at 20–50°C. The homopolymer has a narrow sagging window and limited hot-tack. Deep-draw cavities are restricted to a draw ratio below 1:1 to keep wall-thickness loss below 50%. Finished trays are used for bakery goods, produce display, and non-frozen deli applications. Food-contact compliance is verified under FDA 21 CFR 177.1520, EU 10/2011, and GB 4806.7. For frozen-food trays, the homopolymer alone is not recommended; impact modification is required.
Thermoforming cycle time is controlled by sheet preheat uniformity. A remote infrared pyrometer measures sheet surface temperature across 10 zones; variance of ±2°C is required before plug contact. Plug speed is set at 120–180 mm/s. Transparent trays have haze below 5% when measured by ASTM D1003. The formed tray sidewall thickness distribution is checked with an ultrasonic gauge to identify excessive thinning below 50% of the starting sheet thickness.
On a roll-to-roll vacuum metallizer, biaxially oriented polypropylene base film made from F03D requires a substrate thickness of 15–20 µm and a surface tension on the metal side of at least 42 mN/m per ISO 8296. The film runs in a chamber at 10-2 mbar to 10-4 mbar, and aluminium is evaporated to a layer thickness of 30–50 nm, corresponding to an optical density of 2.0–3.0. Below 30 nm, pinhole density increases and moisture vapour transmission rises above 0.5 g/m²·24 h at 38°C/90% RH measured by ISO 15106-3. Above 50 nm, metal cracking under flexing reduces barrier performance without additional barrier gain. The base film must maintain a thickness profile within ±1.5% to avoid winding wrinkles and metal pick-off. The non-metal side is corona-treated to 36–40 mN/m for lamination, while the metal side is kept free of slip agents to preserve aluminium adhesion. The metallized film is used in high-barrier snack pouches, vacuum packaging, and insulation facing. For food-contact use, the base F03D layer is evaluated under EU 10/2011 and FDA 21 CFR 177.1520; the aluminium coating is positioned outside the sealing layer in most pouch constructions.
Metal adhesion is checked with a tape peel test after a 24 h conditioning period at 23°C. Optical density is measured with a transmission densitometer. The aluminium layer thickness is controlled by evaporator boat feed rate and web speed. A web speed of 6–10 m/s is typical on roll-to-roll metallizers for 15–20 µm PP base film. Residual gas pressure above 1 × 10-2 mbar causes aluminium oxidation and lowers barrier.
| Application | Standard or Test Method | Parameter or Condition |
|---|---|---|
| BOPP food overwrap | FDA 21 CFR 177.1520, EU 10/2011 | olefin polymer food-contact compliance, overall migration 10 mg/dm² |
| BOPP label facestock | ISO 1183, ISO 8296 | density 0.55–0.70 g/cm³, surface tension 38–44 mN/m |
| Woven sack tape | ISO 13934-1, ASTM G154, GB 4806.7 | fabric tensile strength, UV weathering, food-contact compliance |
| PP strapping | ISO 527-3 | tensile break at 23°C, 100 mm gauge length |
| Thermoformed sheet | FDA 21 CFR 177.1520, GB 4806.7 | food-contact compliance |
| Metallized BOPP | ISO 8296, ISO 15106-3 | surface tension 42 mN/m, WVTR 0.5 g/m²·24 h |
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Sinopec PP Homopolymer F03D is a film-grade polypropylene homopolymer supplied as free-flowing cylindrical pellets. The resin is designed for biaxially oriented polypropylene film production and is also used in selected cast film structures requiring high stiffness and low visible gel formation. The nominal melt mass-flow rate is 3.0 g/10 min when measured at 230 °C under a 2.16 kg load in accordance with ASTM D1238 or ISO 1133-1:2022; density at 23 °C is approximately 0.90 g/cm³ by ISO 1183-1:2022. Because F03D is a homopolymer, no ethylene is intentionally copolymerized, and the crystalline melting peak is typically between 160 °C and 164 °C at a differential scanning calorimetry heating rate of 10 °C/min. This places the grade in the medium-viscosity film segment and distinguishes it from random copolymer film grades that develop low-temperature heat-seal behavior at the expense of modulus.
Two operational boundaries define the commercial use of F03D. First, the resin is not intended for low-temperature impact packaging, stretch film, or heat-seal layers. Second, prolonged melt exposure above 280 °C, uncontrolled peroxide addition, or contamination with oxidized metallic residues may cause chain scission and gel-generating reactions. These constraints are common to the polypropylene homopolymer class. The supplier’s technical datasheet and certificate of analysis remain the controlling documents for lot-specific specification limits, including additive package identity, residual catalyst content, and melt mass-flow rate tolerance.
Independent published data for F03D outside Sinopec’s own quality reports are limited. The values reproduced in distributor literature are often typical values from a single production campaign and should not be used as specification limits. Qualification trials on the actual line are required before substituting F03D for another homopolymer film grade. The qualification should include gel-count sampling at the die lip, optical haze measurement on oriented film, and retained melt mass-flow rate after three extrusion passes to detect thermo-oxidative instability.
Molecular architecture in F03D follows the isotactic homopolymer sequence; typical commercial polypropylene homopolymers in this class display a heptane-insoluble fraction above 95 wt%, though the exact figure for F03D should be requested from the producer. The absence of a comonomer permits rapid crystallization and a relatively high tensile modulus, but it also reduces impact strength and eliminates heat-sealability. The low nominal MFR of 3.0 g/10 min indicates a higher average molecular weight than higher-flow film grades, which supports the high draw ratios used in biaxial orientation. The weight-average molecular weight and polydispersity index are not commonly disclosed in standard commercial datasheets.
Under polarized light microscopy, slow-cooled compression-molded specimens of F03D form large spherulites typical of homopolypropylene; in stretched film, the spherulitic structure is converted into oriented fibrils. The oriented structure increases tensile strength in machine and transverse directions beyond the unoriented value. Film made from F03D typically shows a machine-direction tensile stress at break above 120 MPa after orientation, but this value is highly dependent on draw ratio and gauge. The unoriented tensile yield stress in the property table below is the appropriate datasheet reference for incoming inspection.
The additive package strongly influences film quality. Homopolymer PP without adequate stabilization undergoes chain scission at extrusion temperatures, producing low-molecular-weight fragments and carbonyl-containing volatile products that can condense on chill rolls and create surface haze. The hindered phenolic primary antioxidant and phosphite secondary antioxidant used in many film-grade homopolymers terminate peroxy radicals and decompose hydroperoxides. The exact stabilizer ratio in F03D is proprietary, but its function is observed as stable melt pressure, low smoke, and reduced melt-flow drift. If regrind quality is uncertain, oxidative induction time can be evaluated by ISO 11357-6 at 210 °C. A value below 15 min in a differential scanning calorimetric test may indicate regrind dilution or stabilizer consumption, though this threshold depends on the specific test atmosphere and heating rate.
| Property | Method | Representative typical value |
|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022 / ASTM D1238, 230 °C, 2.16 kg | 3.0 g/10 min |
| Density | ISO 1183-1:2022 | 0.90 g/cm³ |
| Tensile yield stress | ISO 527-2, 50 mm/min | 33 MPa |
| Elongation at yield | ISO 527-2, 50 mm/min | 9% |
| Flexural modulus | ISO 178 | 1,500 MPa |
| Notched Izod impact, 23 °C | ISO 180/A | 2.5 kJ/m² |
| Vicat softening point, 10 N, 50 °C/h | ISO 306/A50 | 154 °C |
Film converters should verify the isotropic mechanical values in the table on injection-molded or compression-molded specimens according to the listed methods. These values do not represent oriented film performance. The oriented film properties of F03D depend on machine-direction and transverse-direction draw ratios, heat-setting temperature, and skin-layer resins. Therefore, the table is useful only for confirming that the incoming resin falls within the expected homopolymer class and should not be used to predict final film specifications.
The principal difference is not the base polymer density or melting point, both of which are common to isotactic polypropylene homopolymers, but the specification envelope and additive formulation. General-purpose homopolymer grades with the same nominal MFR may show wider molecular weight distribution and a higher low-molecular-weight fraction. In flat-film extrusion, that fraction migrates to the die lip and produces die deposits, smoke, and optical gels. F03D is positioned as a film-specific homopolymer with tighter control of molecular weight distribution and lower residue levels. The result is lower camera-detected gel counts per roll and greater melt-pressure stability over multi-day production runs.
Compared with propylene-ethylene random copolymers, F03D has a higher crystalline melting point, higher modulus, and no heat-sealability. In coextruded BOPP, it is therefore used as the core or non-seal layer, while random copolymer skins provide the seal initiation temperature. Compared with high-crystallinity BOPP homopolymers, F03D may show a slightly lower crystallization onset and lower bulk crystallinity; published quantitative comparisons are limited and must be confirmed by differential scanning calorimetry. General-purpose injection or tape grades should not be substituted for F03D without a gel-count and melt-pressure trial.
On a production BOPP line with a die width of 2.5 m and three-layer coextrusion, substitution of a general-purpose homopolymer with F03D has been associated in field reports with reduced die-lip build-up over 72 h of continuous operation. The effect is not established by a standardized method and should be verified on the specific line. The die-lip build-up is a practical indicator; low-molecular-weight fraction and stabilizer byproducts volatilize at the die exit and condense on the lip. F03D is expected to reduce this build-up through lower oligomer content and stabilizer compatibility, but die cleaning frequency is more strongly influenced by skin-layer resins than by the F03D core.
During the drafting of production specifications, the converter must distinguish between nominal melt mass-flow rate and rheology under film-extrusion shear. The BOPP process subjects melt to die shear rates above 1,000 s⁻¹ and extensional rates during machine-direction orientation above 200 s⁻¹ depending on line speed and draw ratio. At these rates, two resins with identical MFR can differ in die-head pressure by 5–12%. A capillary rheometer or inline pressure transducer is therefore recommended when tailoring screw speed to a new F03D supply. Melt pressure variation at the screen pack should be logged, because an upward trend over 8–12 h indicates progressive screen blockage from gels or degraded additive residues.
Modern BOPP lines may operate above 350 m/min. At these line speeds, transverse orientation strain rates demand melt strength and molecular weight distribution that resist web deflection and edge sag. F03D is used in the core layer of three-layer coextruded films where the sealant skins carry the heat-seal function. On a standard line with primary extruder length-to-diameter ratio of 30:1 to 38:1 and a barrier screw, barrel temperatures are typically ranged from 200 °C at the feed throat to 240–250 °C at the metering section, with die temperature at 235–245 °C. Screen packs are often stacked at 100/200/300 mesh; this protects the die and increases back pressure.
The quench and orientation window is a critical control surface. Sheet is quenched on a water-cooled roller at 20–30 °C. Insufficient quench permits spherulite growth and haze; excessive quench can reduce oriented tie-chain fraction and increase brittleness. Machine-direction stretching is generally performed at 120–140 °C with draw ratios of 4.5–5.5; transverse stretching is performed at 155–170 °C with draw ratios of 7.0–9.0. These values are typical for BOPP homopolymer cores and shift with line geometry. Simultaneous-orientation frames may require preheat temperature reductions of 3–5 °C relative to sequential orientation because no intermediate cooling occurs.
Web break during transverse stretching is the most severe field failure. It is associated with edge cracks, regrind contamination, and excessive draw. F03D with controlled catalyst residue and antioxidant sequencing lowers the probability of gel-initiated web break, but it does not eliminate edge defects caused by poor pinning or uneven quench. Published production-scale data comparing F03D with other film homopolymers on identical lines are not publicly available in sufficient statistical detail; converters should conduct incoming-resin gel evaluations with an optical scanner and monitor web tension during the first 72 h of a new lot. Gel count is assessed by camera inspection on cast sheet before orientation; the camera software classifies gels by equivalent circular diameter. A useful internal control is to track gels larger than 0.2 mm in the cast sheet. No public ISO or ASTM method exists for film gel characterization, so inter-laboratory comparisons are not standardized.
| Resin class | Nominal MFR at 230 °C, 2.16 kg | Main positioning relative to F03D | Typical use in coextruded film |
|---|---|---|---|
| Sinopec PP Homopolymer F03D | 3.0 g/10 min | Film-specific homopolymer with controlled gel level | Core or non-seal layer |
| Propylene-ethylene random copolymer film grades | 1.5–12 g/10 min | Lower melting point, heat-sealable, lower modulus | Sealant and skin layers |
| General-purpose homopolymer injection or tape grades | 0.3–100 g/10 min | Broader molecular weight distribution, not film-specific | Injection molding, tape, non-woven |
| High-crystallinity BOPP homopolymers | 2.0–4.0 g/10 min | Higher crystallinity, potentially lower haze after orientation | High-gloss labels and metallization base |
In cast film conversion, F03D is used as a stiffness core in multilayer structures. The process window differs from BOPP: the cast film does not undergo biaxial orientation, so the main quality issues are chill-roll plate-out, neck-in, and flatness. The medium MFR of F03D reduces die swell relative to injection-grade homopolymers, aiding gauge band control. On cast lines, melt temperature should be kept below 260 °C and the air gap minimized to reduce oxidation. The resin should be processed with edge trim removal and controlled regrind blending. The maximum regrind level depends on the end-use film specification; typical BOPP and cast film operations limit regrind to 10–30 wt% because repeated heat histories increase gel formation and reduce melt viscosity.
Melt strength, although not routinely listed on F03D datasheets, is a determining variable for tenter-frame stability. It can be measured on a capillary rheometer equipped with a haul-off unit at 190 °C and an initial extrusion velocity of 20 mm/s. For homopolymers of this MFR class, melt strength typically varies from 5 to 10 cN, but exact values depend on molecular weight distribution and test velocity. A converter should not compare melt strength values across laboratories without matching the test geometry.
For food-contact compliance assessment, F03D as a polypropylene homopolymer must be evaluated against jurisdiction-specific regulations. In the United States, polypropylene homopolymer may comply with FDA 21 CFR 177.1520 when used in accordance with that regulation; in the European Union, food-contact polypropylene is evaluated under EU Regulation No 10/2011 with specific migration limits. In China, the relevant national standard for food-contact polypropylene is GB 4806.7-2016. Compliance is lot-specific and depends on the additive package, processing aids, and intended conditions of use. The manufacturer should provide a compliance statement for the exact F03D shipment. Medical-grade or pharmaceutical certification is not implicit and must be separately contracted.
Storage and handling define the remaining operational envelope. Pellets should be stored in dry, clean conditions below 40 °C and protected from direct sunlight to minimize oxidative degradation and color shift. Although polypropylene is not hygroscopic, surface moisture from condensation can cause feed-throat slipping and unstable melt conveying. Regrind inclusion should be controlled, and F03D should not be mixed with oxidized regrind taken from hot-runner residue or burned material. The resin is not compatible with unneutralized peroxide masterbatches, strong oxidizing agents, or aromatic solvents; such contacts compromise the stabilizer system and increase gel generation.
