| HS Code | 965858 |
| Density | 0.90 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 8.0 g/10min |
| Tensile Strength At Yield | 34 MPa |
| Elongation At Break | 500% |
| Flexural Modulus | 1500 MPa |
| Izod Impact Strength 23 C | 3.5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 105 °C |
| Vicat Softening Temperature | 155 °C |
| Melting Point | 165 °C |
| Rockwell Hardness | R105 |
As an accredited Sinopec PP Homopolymer F08MX factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg woven polypropylene bags with inner liner, sealed, palletized and stretch-wrapped to protect against moisture and contamination. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Sinopec PP Homopolymer F08MX in woven bags, securely palletized and stowed for safe transport. |
| Shipping | Sinopec PP Homopolymer F08MX ships as non-hazardous polypropylene resin, typically in 25 kg bags, jumbo sacks, or pellets. It requires dry, ventilated conditions, protection from moisture and direct sunlight. Transport by rail, road, or sea is safe with stable stacking and proper container lining. |
| Storage | Store Sinopec PP Homopolymer F08MX in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition. Keep containers tightly sealed to prevent moisture absorption and contamination. Avoid stacking excessively high. Protect from mechanical damage. Under proper conditions, shelf life is typically up to 12 months from delivery. |
| Shelf Life | Sinopec PP Homopolymer F08MX has a shelf life of one year when stored dry, cool, and protected from direct sunlight. |
In biaxially oriented polypropylene food-contact film production, Sinopec PP Homopolymer F08MX is processed on a sequential stretching line with an extruder L/D ratio of 30:1–36:1 and a barrier screw. The nominal melt flow rate of this grade is 8.0 g/10 min at 230 °C/2.16 kg per ISO 1133-1:2022, which supports a stable melt curtain at take-off speeds above 30 m/min on chill-roll units. Cast sheet thickness is controlled at 2.0–3.0 mm with chill-roll surface temperatures between 15 °C and 25 °C; higher quench temperatures above 30 °C increase spherulite size and final film haze. Machine direction orientation is carried out at a practical pre-heat temperature of 120–130 °C with a draw ratio of 4.5–5.5, while transverse direction orientation in a stenter oven operates at 155–170 °C with a TD draw ratio of 7–10. The usable MD stretching window is approximately ±5 °C around 125 °C; below 120 °C, stress whitening appears as non-uniform yielding, and above 135 °C, gauge bands develop from partial orientation relaxation. Corona discharge treatment on the outer skins raises wetting tension to 38–42 mN/m when measured by ASTM D2578. For direct-food packaging, the finished film must satisfy the overall migration limit of 10 mg/dm² under (EU) No 10/2011 when tested with food simulants assigned to the intended contact category; in the United States, homopolymer polypropylene is referenced under FDA 21 CFR 177.1520 and must meet the applicable extractives limits for the end-use temperature. A three-layer A/B/A structure commonly uses F08MX in all layers or as core with a random copolymer sealant skin, because homopolymer seal initiation is typically above 130 °C and is not suitable for high-speed vertical form-fill-seal lines requiring 110–120 °C seal initiation. Skin-layer formulation may include 0.05–0.15 wt% synthetic silica antiblock and 0.03–0.08 wt% erucamide slip additive; core layer may contain 5–15 wt% re-pelletized edge trim if the final film is not intended for high-fat hot-fill contact. Final films of 15–30 µm produce snack food pouches, bakery film, confectionery twist wrap, and general overwrap. Haze on a 20 µm film is typically 1.0–2.5% per ASTM D1003, and gloss at 60° is above 85 per ASTM D2457 when measured on the treated side after orientation.
For pressure-sensitive tape backing, F08MX film is slit from mill rolls into jumbo widths of 1,200–1,600 mm and then coated on high-speed converting lines at 300–500 m/min. The backing must retain a wetting tension of at least 38 mN/m at the coating station; if the treated surface falls below 36 mN/m, solvent-free acrylic adhesives do not wet uniformly and adhesive transfer to the transport rollers increases. Corona treatment is therefore re-applied inline before priming when roll inventory is older than 30 days or when warehouse storage exceeds 30 °C. A water-based primer is applied at 0.1–0.3 g/m² dry coat weight, followed by solvent-free or hot-melt acrylic adhesive at 18–25 g/m² dry coat weight using multi-roll transfer or slot-die equipment. Peel adhesion to stainless steel is tested after 24 h dwell at 23 °C/50% RH per ASTM D3330; carton sealing tape specifications commonly require 2.0–3.0 N/cm at 180° peel. REACH obligations are addressed under 1907/2006/EC, and the coated backing is excluded from food-contact claims unless the adhesive and primer are jointly evaluated under the relevant migration framework. The main process conflict is adhesive anchoring failure caused by post-corona surface decay and low-molecular-weight oxidized species that bloom to the film surface. Published data for F08MX-specific tape constructions is limited, so mill qualification runs must establish the minimum dyne retention window for the primer and adhesive batch lot. The resulting end products are carton sealing tape, stationery tape, and light-duty masking tape converted to 24–72 mm slit rolls.
Following biaxial orientation, ultra-low base pressure and sustained surface energy determine aluminum nucleation density on F08MX-based film entering a vacuum metallizer. A roll-to-roll chamber is evacuated to a base pressure of 2×10−2–5×10−3 Pa, and aluminum wire is evaporated from resistance-heated intermetallic boats at a deposition thickness of 20–40 nm. Optical density after metallization is controlled to 2.0–2.5; below 2.0, barrier performance is inconsistent, and above 2.5, heat load can induce thermal shrinkage lines. Corona-treated base film must show 38–44 mN/m wetting tension per ASTM D2578 within 24 h before metallization; film exposed to more than 60% RH for over 48 h can develop surface condensation layers that produce pinholes and aluminum skip. Barrier improvement after metallization is tested by ASTM D3985 for oxygen and ASTM F1249 for water vapor. A 20 µm unmetallized base film can show oxygen transmission of approximately 1,500–2,000 cm³/(m²·day·atm), while the metallized counterpart may drop to 1–3 cm³/(m²·day·atm); water vapor transmission may fall from 5–8 g/(m²·day) to 0.3–0.8 g/(m²·day) at 38 °C/90% RH. The metallized film is then adhesive-laminated to polyethylene or cast polypropylene sealant webs for coffee bag laminations, gas-flush snack pouches, and barrier overwrap. Compliance for the laminated food-contact structure remains governed by (EU) No 10/2011 overall migration of 10 mg/dm² and the applicable national legislation for aluminum migration from the metal layer if the food-contact surface is broken.
On a rotary die-cutting line running at 150–300 m/min, BOPP label facestock made from F08MX must maintain consistent machine-direction stiffness and low tear initiation at the matrix stripping station. The oriented film is coated with a solvent-borne or UV-cured pressure-sensitive adhesive at 15–20 g/m² dry coat weight on a silicone-coated release liner carrying 0.8–1.2 g/m² silicone. Machine-direction tensile modulus of clear label stock after orientation is typically 1.8–2.4 GPa per ASTM D882; this modulus resists elongation during high-speed die cutting but creates higher matrix-stripping force than polyethylene labels at the same caliper. The film surface is corona treated to 40–44 mN/m per ASTM D2578 before UV flexo, letterpress, or water-based ink application, and sealed storage at 20–25 °C should retain printability for 6 months. Compliance for label facestock is verified against REACH 1907/2006/EC and RoHS 2011/65/EU; the coated adhesive and liner are outside food-contact scope unless the converter qualifies the full label under the appropriate migration protocol. Low-temperature durability is a limitation: unmodified homopolymer facestock exhibits reduced impact resistance below 0 °C, so freezer-grade clear labels require modified or coextruded films. The terminal products are clear or white pressure-sensitive labels for beverage bottles, personal care containers, and general durable-goods tagging, with final label die-cut tolerances typically held at ±5 µm for automatic dispensing lines.
Tobacco pack overwrap conversion from F08MX begins with slit reels of 18–22 µm film designed for high-speed folding and heat-seal wrapping at 700–1,000 packs/min. Static coefficient of friction is controlled to 0.20–0.30 and kinetic coefficient of friction to 0.15–0.25 per ISO 8295 by adjusting skin-layer slip additive concentration and antiblock particle size. The film haze is maintained below 2.0% per ASTM D1003, and 60° gloss is typically 85–95 per ASTM D2457 on the exterior surface. Blocking occurs if the treated outer surface contacts the untreated inner surface under rewind tension above 200 N during storage at temperatures above 30 °C; therefore, hard reels are specified with a controlled inner diameter and a uniform winding profile. Print side surface tension is set at 38–42 mN/m for solvent-free or low-VOC nitrocellulose-polyurethane ink systems; tobacco brand owners commonly require no toluene and no benzophenone residues in the printed structure. The high-speed line rejects film that exhibits gauge bands exceeding ±2 µm across the web, because such gauge variation changes folding geometry and heat-seal dwell consistency. Compliance is managed through REACH 1907/2006/EC and individual tobacco-brand restricted-substance specifications; this application is not evaluated under FDA 21 CFR 177.1520 because the overwrap is not a direct food-contact surface. End products are cigarette pack overwrap, tear-tape base film, and related tobacco carton barrier wrap, with final film reels slit to 105–120 mm widths and 12,000–18,000 m linear run length for high-speed packers.
Adhesive-laminated stand-up pouches using F08MX as the outer print web impose different web-handling limits than tape or label converting. The outer film is printed with solvent-based or electron-beam flexo inks, then laminated to a polyethylene or cast polypropylene sealant web using a two-component solventless polyurethane adhesive applied at 1.5–2.5 g/m² dry coat weight on a flexo/slot-die laminator at 250–400 m/min. Mixing ratios for standard two-component solventless systems are controlled within ±5% of the manufacturer's specified mass ratio, commonly near 100:50, to prevent incomplete crosslinking and bond-strength decay. Bond strength is tested after 48 h curing at 23 °C/50% RH per ASTM F904; values below 1.5 N/15 mm signal tunnel defects or delamination at gusset folds. The F08MX print web requires surface tension of 38–42 mN/m retained through printing and lamination; if corona decay occurs after printing, ink re-wetting and adhesive anchorage both deteriorate. Food-contact compliance for the final pouch is valid only when the complete multilayer lamination passes the overall migration limit of 10 mg/dm² under (EU) No 10/2011 and the adhesive layer meets the applicable migration or functional-barrier assessment under FDA 21 CFR 175.105. End products are stand-up pouches, side-seal pouches, and spouted pouches for snacks, dry powder mixes, and non-fat liquid detergents; the outer BOPP layer provides print gloss and stiffness while the sealant web supplies puncture resistance and heat-seal performance.
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Among the homopolymer polypropylene grades supplied by Sinopec, the designation F08MX identifies a pelletized polypropylene homopolymer intended primarily for extrusion-oriented film processes. The material is not classified as a random copolymer or an impact copolymer; the backbone is formed essentially from propylene repeat units without ethylene comonomer in the main chain. This compositional constraint gives the grade the high stiffness and optical clarity typical of homopolymer polypropylene while limiting low-temperature sealability. Melt flow rate under ISO 1133-1:2022 at 230°C/2.16 kg is controlled in a narrow band around 8.0 g/10 min, a flow level selected for high-speed cast and biaxially oriented film lines. Chinese mill certificates may report this value under GB/T 3682-2000. The product is supplied in pellet form and is used as a base resin or core-layer resin in multilayer structures. Exact lot-specific values are recorded on the producer’s certificate of analysis and may be tighter than the published range; they should be used for incoming inspection rather than typical ranges presented in commercial literature.
On production-scale BOPP primary extrusion, the 8.0 g/10 min melt flow rate reduces screw motor load and die head pressure compared with a 3.0 g/10 min homopolymer when run at equal throughput. The relationship between melt flow rate and pressure drop follows the shear-thinning behavior observed in capillary rheometry under ISO 11443:2021; for a polypropylene homopolymer, an increase from 3.0 g/10 min to 8.0 g/10 min can reduce apparent viscosity at 100 s⁻¹ and 230°C by 40–55%, although die pressure also depends on throughput, melt temperature, and screw design. In a 90 mm single-screw extruder with an L/D of 30:1, a barrier screw, and a die gap of 2.5–3.5 mm, melt temperature at the die exit should be maintained at 230–250°C. Above 280°C, oxidative chain scission becomes measurable, causing a decrease in melt viscosity and the formation of yellowing species. Residence time in the barrel and hot runner should not exceed 15 min at 250°C. A screen pack of 200/400/200 mesh is commonly used to trap gel particles, but the pressure drop across the pack must be monitored; a rise above 30 MPa indicates screen blinding and requires replacement. Published mill-scale data comparing F08MX to other manufacturer grades under identical line conditions are limited; converter-specific pressure and motor load baselines are required before optimization.
After chill-roll solidification and subsequent machine-direction stretching at draw ratios of 4.5:1 to 5.5:1, the film develops tensile properties substantially higher than the pellet properties. For 50 µm cast film produced on a 1.8 m wide line with a 20°C chill roll, tensile yield stress along the machine direction is measured at 34–38 MPa under ISO 527-3; transverse-direction yield stress is lower by 5–10%. This anisotropy is inherent to orientation and must be accounted for in downstream slitting and printing. The flexural modulus of injection-molded specimens, tested under ISO 178, is commonly reported for this grade in the range 1350–1550 MPa; film modulus is not directly comparable to injection-molded specimen modulus because thickness and orientation differ. Notched Izod impact of injection-molded F08MX at 23°C under ISO 180/A is reported in the 1.5–2.5 kJ/m² range; impact resistance decreases below 0°C. The material is therefore not recommended for frozen-food film layers where low-temperature drop impact is the primary requirement. A homopolymer of this flow class is best used in core layers, print films, tape backings, and metallizable film where stiffness and dimensional stability carry the design load.
| Property | Method | Indicative range | Unit |
|---|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | 7.5–8.5 | g/10 min |
| Density | ISO 1183-1 | 0.90–0.91 | g/cm³ |
| Tensile yield stress | ISO 527-2 | 33–37 | MPa |
| Elongation at yield | ISO 527-2 | 7–9 | % |
| Nominal elongation at break | ISO 527-2 | 200–500 | % |
| Flexural modulus | ISO 178 | 1350–1550 | MPa |
| Notched Izod impact at 23°C | ISO 180/A | 1.5–2.5 | kJ/m² |
| Vicat softening temperature | ISO 306/A50 | 152–156 | °C |
| Xylene soluble fraction | ISO 16152 | 2–4 | % |
These ranges are not specification limits for lot release; they represent the typical class of homopolymer film grades with a melt flow rate near 8.0 g/10 min. The producer’s certificate of analysis and the Safety Data Sheet should be consulted before establishing incoming inspection limits. Differences between F08MX and other producers’ film grades may exist even when the melt flow rate is identical, because molecular weight distribution, isotactic index, and additive formulation influence processability. Published elongation at break data for F08MX after biaxial orientation under a specific draw ratio is limited; converters should generate internal film tensile data under ISO 527-3.
In thin-gauge cast film below 30 µm, optical haze is influenced as much by chill-roll temperature and screw work history as by the resin’s catalyst residue and additive package. F08MX is a homopolymer with a lower xylene-soluble fraction than random copolymers; the lower soluble content reduces the light-scattering amorphous domains that contribute to haze after heat sterilisation. Haze of film is measured under ASTM D1003-13, but reported values without stating film gauge, chill-roll temperature, and additive load are not comparable. A typical control range for 25 µm cast film produced on a polished 20°C chill roll is 1.0–2.5%; film produced at higher chill-roll temperatures or with excessive melt temperature can exhibit higher haze because of spherulite growth. The pellet does not necessarily contain a high-slip additive; coefficient of friction is controlled by converter-added erucamide or oleamide masterbatch. Dynamic coefficient of friction is measured under ISO 8295, and the rate of slip-agent migration to the surface depends on film crystallinity, storage temperature, and time. Migration can take 24–72 h at 23°C; measurements made immediately after extrusion can overstate coefficient of friction. Mineral anti-block masterbatches may increase haze at levels above 3 wt%, so formulators should verify the film’s optical and friction properties simultaneously.
When a converter adds a slip or anti-block masterbatch to F08MX at levels between 2 wt% and 5 wt%, the carrier resin in the masterbatch changes the effective melt flow rate of the blend. If the masterbatch is based on a higher-MFR homopolymer, the blend may shift toward 9–10 g/10 min and lower melt pressure. If the carrier is a low-density polyethylene or a random copolymer, the rheological profile and optical properties diverge from the homopolymer base. Additives should be metered with a gravimetric feeder on the main feed throat; preblending by drum tumbling is not recommended for critical optical film because segregation can occur during hopper conveying. The film stiffness also declines as the masterbatch level increases, particularly when the masterbatch contains a rubber or low-modulus carrier. For anti-block masterbatch at 5 wt%, the flexural modulus of an injection-molded coupon can fall by 3–8% under ISO 178 relative to unfilled base resin; the actual reduction depends on the carrier resin and the filler type. Processors should validate the final film for yield stress, haze, and coefficient of friction under the same standards used for release testing. In multi-extrusion-layer lines, the viscosity mismatch between adjacent layers should be kept small; a difference greater than 100 Pa·s in shear viscosity at 100 s⁻¹ can create interfacial instability in the die and degrade optical quality.
Compared with a low-MFR homopolymer film grade such as a 3.0 g/10 min product, F08MX provides lower melt pressure and lower orientation stress at equal draw ratio, but it also exhibits lower melt strength. On cast film lines, chill-roll web stability can become the limiting factor at haul-off speeds above 300 m/min if the air knife geometry is poorly adjusted. Compared with random copolymers containing 2–4 wt% ethylene, F08MX has higher flexural modulus and higher Vicat softening temperature, but cannot deliver low-temperature seal initiation below 120°C. Random copolymer sealant grades typically show seal initiation temperatures in the 110–125°C range under ASTM F1921; homopolymer heat seal strength develops only near the melting point. Therefore F08MX is used in core or base-film layers, while the sealant layer is a random copolymer or ethylene-propylene-butene terpolymer. Compared with impact copolymers, F08MX has higher stiffness and better optical clarity, but sharply lower notched Izod impact, so it is not substituted for heavy-gauge packaging where puncture and drop impact dominate. The differences are compositional rather than additive-driven; if a converter requires both high stiffness and low-temperature toughness, a multilayer laminate with F08MX as the core and impact or random copolymer skins is the engineering solution.
Sinopec PP Homopolymer F08MX is typically assessed for food-contact suitability under FDA 21 CFR 177.1520 as an olefin polymer, provided the finished article meets the extractive limits and end-use restrictions specified in the regulation. Compliance is not granted by the resin alone; the converter must conduct migration testing on the final package under EU Commission Regulation 10/2011 with fatty-food simulants when applicable. For European Union compliance, the grade should be accompanied by a supplier declaration stating that the substance is within the allowed monomer and additive restrictions. REACH registration is handled by the producer under Regulation (EC) 1907/2006; downstream users are expected to communicate uses. RoHS restrictions under Directive 2011/65/EU for lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE do not apply to neat polypropylene in typical packaging, but a recyclate blend may require testing under IEC 62321-5:2013 or equivalent. The material should not be assumed to be free of low-level residues that may affect organoleptic performance; a sensory evaluation under ISO 13302 may be required for direct food contact. Pre-drying is not normally required if pellet moisture is below 0.02 wt% by Karl Fischer titration under ISO 15512. When pellets are stored below 10°C and transferred to a 25°C, 75% RH production hall, surface condensation can occur; in that case, drying at 80–90°C for 2–4 h in a desiccant hopper is used. Avoid processing in contact with copper or copper alloys above 250°C, because copper ions accelerate free-radical oxidation and can cause black specks. Do not blend F08MX with high residual copper or iron recyclate without controlling the acid scavenger level, because metal-catalyzed degradation can reduce long-term oxidative stability under ASTM D3012.
