| HS Code | 567326 |
| Density | 0.905 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 4.0 g/10 min |
| Tensile Strength At Yield | 35 MPa |
| Elongation At Break | 12% |
| Flexural Modulus | 1400 MPa |
| Notched Izod Impact Strength 23 C | 33 J/m |
| Heat Deflection Temperature 0 45 Mpa | 100 °C |
| Vicat Softening Temperature | 155 °C |
| Melting Point | 165 °C |
| Shore D Hardness | 72 |
As an accredited INVISTA PP Homopolymer P4C6B-194 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | INVISTA PP Homopolymer P4C6B-194 is supplied in 25 kg bags, durable polyethylene-lined packaging for safe handling and storage. |
| Container Loading (20′ FCL) | 20′ FCL container loading of INVISTA PP Homopolymer P4C6B-194: bagged resin on pallets, secured and blocked for safe transit. |
| Shipping | INVISTA PP Homopolymer P4C6B-194 is a non-hazardous polypropylene resin supplied as free-flowing pellets. It ships in sealed moisture-resistant bags, gaylord boxes, or bulk railcars/trucks. Store in dry, ventilated conditions away from heat, ignition sources, and direct sunlight. No special transport classification required under normal shipping conditions. |
| Storage | Store INVISTA PP Homopolymer P4C6B-194 in a clean, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture contamination and dust accumulation. Maintain ambient temperatures, avoiding excessive heat. Protect from mechanical damage and store separately from incompatible materials. Follow local regulations and manufacturer guidelines. |
| Shelf Life | INVISTA PP Homopolymer P4C6B-194 has an indefinite shelf life when stored in dry, cool conditions away from sunlight and contamination. |
In high-speed injection molding of thin-wall dairy packaging, melt flow length and warpage control govern tool design. Processing of INVISTA PP homopolymer P4C6B-194 in this segment is normally conducted at melt temperatures of 210 °C to 240 °C and mold temperatures of 10 °C to 30 °C, with injection velocities of 250 mm/s to 450 mm/s in accumulator-assisted hydraulic or all-electric machines. Compliance for food-contact use is established under FDA 21 CFR 177.1520(c), EU Regulation (EU) No 10/2011, and GB 4806.7-2023. Formulation addition ratios used in standard production are base polymer 98.5–99.5 wt%, high-clarity nucleating agent at 0.05–0.20 wt%, process stabilizer at 0.05–0.15 wt%, and mold release at 0.05–0.20 wt%. The downstream conversion process uses hot runner valve gates with multi-cavity tools to reduce gate vestige and shear-induced warpage; cavity fills are balanced within ±2% by volume. Finished product categories include dairy cups, delicatessen containers, and microwaveable bowl bases. Because this is a homopolymer, low-temperature impact performance below approximately -20 °C is limited, and stacking under freezer conditions without impact modification is not recommended.
Extrusion blow molding of homopolymer PP grade P4C6B-194 for pharmaceutical packaging requires melt delivery at 200 °C to 220 °C through a grooved-feed extruder with an L/D ratio of 24:1 to 30:1. Compliance is maintained under Ph. Eur. 10.0, Chapter 3.1.3, USP <661.1>, FDA 21 CFR 177.1520, and ICH Q3D for elemental impurity limits. Production formulations typically consist of base homopolymer at 99.5–99.8 wt%, antioxidant blend at 0.08–0.15 wt%, and antistatic additive at 0.05–0.10 wt%; slip-agent loading is kept below 0.10 wt% to avoid risk of surface bloom on container closures. The downstream process uses continuous shuttle or rotary wheel blow molding machines with die head temperature 200 °C to 210 °C, mold temperature 15 °C to 25 °C, and blow pressure 0.6 MPa to 0.8 MPa. Finished products include syrup bottles, oral liquid containers, and laboratory reagent bottles. Homopolymer PP provides effective moisture barrier relative to low-density polyethylene, but contact clarity is lower than random copolymer grades; applications requiring high transparency should specify clarified random copolymer instead.
| Application segment | Regulatory basis | Relevant clause/test method | Key assessment parameter |
|---|---|---|---|
| Thin-wall food packaging | FDA 21 CFR 177.1520(c), EU 10/2011, GB 4806.7-2023 | EN 1186-1 overall migration | Sensory, specific migration, volatile organics |
| Pharmaceutical blow molded containers | Ph. Eur. 3.1.3, USP <661.1>, ICH Q3D | Extraction tests, elemental impurity limits | Heavy metals, extractable profile |
| Cast film and label face stock | FDA 21 CFR 177.1520, EU 10/2011 | EN 1186-1 migration, ASTM D1894 | Coefficient of friction, migration |
| Automotive interior substrates | REACH, RoHS 2011/65/EU, ISO 3795, VDA 275 | Flammability, VOC, fogging | Formaldehyde emission, flame spread rate |
| Medical devices and laboratory consumables | ISO 10993-1:2018, USP <88> Class VI, ISO 10993-18:2020 | Cytotoxicity, extractables | Biocompatibility, leachable profile |
| Beverage and pharmaceutical closures | FDA 21 CFR 177.1520, EU 10/2011, EU No 2022/71 | EN 1186-1 migration, organoleptic testing | Migration, taint, odor |
Cast film extrusion lines configured for homopolymer PP grade P4C6B-194 typically run with chill roll temperatures between 15 °C and 35 °C and melt temperatures of 220 °C to 250 °C. For film used in label face stock and cold-seal packaging, compliance is demonstrated under FDA 21 CFR 177.1520 and EU Regulation (EU) No 10/2011, with migration testing according to EN 1186-1 where applicable. Formulation addition ratios observed in production are base polymer 95.0–98.5 wt%, slip additive 0.05–0.10 wt%, antiblocking agent 0.10–0.25 wt%, and antistat 0.05–0.15 wt% when static discharge control is required for high-speed label conversion. The downstream process uses slot die extrusion, polished chill roll contact with nip pressure in the range of 40 N/cm to 80 N/cm, corona treatment at 38–46 mN/m, and in-line slitting. Finished goods include pressure-sensitive label face stock, lamination webs, and overwrap film for personal care packaging. High-speed converting on automatic labeling equipment requires consistent film flatness and controlled unwind tension; batch-to-batch variation in chill roll release should be monitored through ASTM D1894 coefficient of friction testing.
When P4C6B-194 is selected as the matrix phase for compounded automotive interior substrates, the formulation envelope is constrained by stiffness loss at high elastomer loading and emissions at high talc loading. Typical compound composition for door panel substrates and dashboard carriers is homopolymer PP 55–75 wt%, talc 15–25 wt%, ethylene-octene copolymer 5–15 wt%, heat stabilizer 0.2–0.5 wt%, UV stabilizer 0.2–0.4 wt%, and processing aid 0.1–0.3 wt%. Compliance is governed by REACH, RoHS Directive 2011/65/EU, ISO 3795 flammability, and VDA 275 formaldehyde emission limits. Compounding runs are performed on co-rotating twin-screw extruders with L/D ratios of 40:1 to 52:1, with side feeding of talc after polymer melting and vacuum devolatilization at -0.08 MPa to -0.10 MPa. Injection molding of the finished substrate requires clamp forces of 8000 kN to 20000 kN, melt temperatures of 200 °C to 230 °C, and sequential valve gating to avoid weld-line embrittlement. Finished product categories include door panel substrates, dashboard carriers, and pillar trim substrates. Process control must account for talc-induced viscosity increase and heater wear; screw and barrel replacement intervals are commonly shortened by 20–40% relative to unfilled PP. When talc content exceeds 25 wt%, notched impact performance may fall below acceptable limits for cold climate interior parts; grade-specific data for P4C6B-194 in this range is limited and should be verified by ISO 179-1 Charpy testing.
In cleanroom injection molding of single-use diagnostic devices and laboratory consumables, material selection must satisfy biocompatibility screening, chemical resistance to common reagents, and dimensional control after sterilization. For INVISTA PP homopolymer P4C6B-194, devices intended for transient patient contact require compliance with ISO 10993-1:2018, USP <88> Class VI, and FDA 21 CFR 177.1520 where the device is also a food contact article. Formulation addition ratios for cleanroom production are base polymer 98.0–99.5 wt%, radiation stabilizer 0.10–0.20 wt%, and controlled color masterbatch 0.5–2.0 wt%; additives must be pre-qualified for extractables under ISO 10993-18:2020. The conversion process uses closed-loop injection molding machines with melt temperature 200 °C to 230 °C, mold temperature 20 °C to 35 °C, and ISO Class 8 cleanroom operation. Sterilization is typically performed by ethylene oxide or gamma irradiation; radiation stabilizer loading above 0.20 wt% may reduce post-irradiation yellowing but can alter extractables. Finished products include diagnostic cassettes, pipette bodies, specimen containers, and laboratory ware. This homopolymer grade is not suitable for long-term implantables or sustained skin contact above 24 h without additional biocompatibility evaluation.
In closure manufacturing, cycle time and dimensional consistency are determined by cavity filling balance, gate freeze time, and ejection force. For P4C6B-194 processed on high-cavity injection tools, recommended melt temperature is 210 °C to 230 °C, mold temperature is 10 °C to 20 °C, and hold pressure is 40 MPa to 60 MPa. Compliance for beverage closures is established under FDA 21 CFR 177.1520, EU Regulation (EU) No 10/2011, and EU No 2022/71 for plastic materials in contact with food. Formulation addition ratios used in standard production are base polymer 98.5–99.5 wt%, slip additive 0.05–0.15 wt%, antioxidant 0.05–0.12 wt%, nucleating agent 0.02–0.10 wt%, and color concentrate 0.5–2.0 wt%. Downstream production runs with 48–96 cavity hot runner systems and cycle times of 7–12 s; gate vestige must be below 0.10 mm to ensure tamper-evident band integrity. Finished products include screw closures, snap closures, and tamper-evident lids for bottled water, dairy beverages, and pharmaceutical syrups. Ejection force increases with overcooling; mold release levels above 0.20 wt% can interfere with ultrasonic band scoring or printing adhesion. Published data for this specific grade in multi-cavity closure tools is limited; start-up validation should include ISO 1133-1:2022 melt flow confirmation and full cavity fill studies.
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INVISTA PP Homopolymer P4C6B-194 is a pelletized isotactic polypropylene homopolymer positioned in the intermediate-flow segment, with a nominal melt mass-flow rate of 4.0 g/10 min when characterized at 230 °C under 2.16 kg piston load in accordance with ISO 1133-1:2022. The polymer backbone contains no ethylene comonomer; therefore the resin shows higher stiffness and chemical resistance than random copolymer grades of equivalent melt flow, but lower low-temperature impact toughness. The material is manufactured using a high-activity Ziegler-Natta catalyst system and is normally formulated with an acid neutralizer and a process stabilizer. Full additive disclosure is batch-dependent and should be requested from the certificate of analysis before food-contact or medical packaging evaluations.
Lot-specific melt flow rate, isotactic index, and ash content should be verified before setting downstream conditions. For moisture-sensitive operations, desiccant drying at 80 °C for 2–4 h is a standard starting point when storage humidity exceeds 60 % RH; surface splay and gate blush have been observed in thick-wall injection molding when residual moisture exceeds 0.10 wt%. Published data for this specific grade configuration is limited; processing conditions should therefore be confirmed against the current technical data sheet and the certificate of analysis.
The processing window is governed by melt homogeneity and thermal stability. On general-purpose screws with L/D ratios between 20:1 and 24:1, barrel settings are commonly profiled from 200 °C at the feed throat to 220–240 °C in the metering zone and nozzle. A flat or slightly reverse profile is preferable to limit screw slip and uncontrolled shear heating. At melt temperatures above 260 °C, thermo-oxidative chain scission accelerates; the melt flow rate rises with residence time and viscosity uniformity declines, causing short-shot inconsistency in multi-cavity tools. Below 190 °C, unmelted particles and inconsistent packing are more likely in thin-wall sections. A random copolymer purge is not recommended for color changes because residual ethylene sequences can alter interfacial crystallinity in the next homopolymer shot; a homopolymer purge of similar melt rheology or a dedicated purging compound is preferable.
On hydraulic injection molding machines above 1000 kN clamp force, hold pressure should be increased in steps of 5–10 bar until gate seal is reached; overpacking is indicated by flash at the parting line and post-ejection warpage. Mold temperature is usually maintained at 20–40 °C for unfilled homopolymer. Raising mold temperature to 80 °C improves surface gloss and reduces weld-line depth but can increase cycle time by 10–15 %; published data for this specific configuration is limited. Hot-runner manifolds should be controlled between 220 °C and 250 °C, and positive decompression is recommended on shut-off nozzles to prevent drool at the gate.
Specifying P4C6B-194 by melt flow rate alone is insufficient for dimension-sensitive applications because crystallization rate, shrinkage, and modulus depend also on nucleating package and processing history. Table 1 lists generally expected values for an unfilled intermediate-flow PP homopolymer. These values are class-level data and do not replace a lot-specific certificate of analysis for P4C6B-194, since additive formulation can shift properties.
| Property | Test method | Typical value or range | Test condition / specimen |
|---|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022 | 4.0 g/10 min | 230 °C, 2.16 kg |
| Density | ISO 1183-1:2019 | 0.900–0.910 g/cm³ | 23 °C |
| Tensile yield stress | ISO 527-2:2012 | 30–38 MPa | 50 mm/min, type 1A |
| Flexural modulus | ISO 178:2019 | 1.3–1.7 GPa | 2 mm/min, 80 mm × 10 mm × 4 mm |
| Notched Izod impact strength, 23 °C | ISO 180/A | 2.0–4.0 kJ/m² | Type A notch, 4 mm thickness |
| Heat deflection temperature, 0.45 MPa | ISO 75-2/B | 85–105 °C | Flatwise, 80 mm × 10 mm × 4 mm |
| Vicat softening temperature | ISO 306/B50 | 150–155 °C | 50 °C/h, 50 N |
| Mold shrinkage, unfilled | ISO 294-4:2018 | 1.0–1.5 % | Parallel flow, 60 mm × 60 mm × 2 mm |
The ranges in Table 1 reflect the general controlled-rheology homopolymer class; actual P4C6B-194 values may be different because catalyst type, nucleating additives, and vis-breaking conditions influence final crystallinity. The material processor should not use these ranges as a contractual specification.
Cooling-limited applications should also account for crystallization behavior. Homopolymer polypropylene of this class typically exhibits a peak crystallization temperature around 110–120 °C at 10 °C/min cooling rate when measured by differential scanning calorimetry per ISO 11357-3:2018. Slower cooling produces larger spherulites and lower impact toughness; mold temperature intended to control spherulite size should therefore be selected with the cooling rate of the thickest wall section in mind, not only the nominal surface temperature.
Substitution decisions should be based on load-bearing capacity, chemical resistance, and cost per cubic centimeter. P4C6B-194 belongs to the homopolymer class and typically provides higher flexural modulus and better resistance to natural and synthetic oils, surfactants, and dilute mineral acids than a random copolymer with similar melt flow. However, it lacks the ethylene comonomer distribution that governs optical clarity and low-temperature ductility. In rigid closures and industrial parts that require dimensional stability under load, the homopolymer may allow a thinner wall to achieve the same flexural stiffness. The actual wall reduction depends on processing conditions and final part geometry; finite-element verification with the selected grade is required.
Differentiation from impact copolymers is also governed by phase structure. P4C6B-194 does not contain a dispersed ethylene-propylene rubber phase; notched Izod values at −20 °C are significantly lower than impact copolymer values, and the material is not recommended for freezer packaging, automotive bumper fascias, or luggage shells where sub-zero impact is the controlling failure mode. Conversely, its higher modulus and better resistance to bleaching agents and hot detergents make it suitable for dishwasher-loaded injection-molded components and chemical storage applications. When transferring a mold from a random copolymer to P4C6B-194, holding pressure and gate-seal conditions should be re-established because melt compressibility and freeze-off behavior are different.
Food-contact status for P4C6B-194 cannot be assumed from the base resin composition alone. The supplier should provide a written regulatory letter for the specific grade and production lot; institutional buyers commonly require a dual declaration covering FDA 21 CFR 177.1520 and EU Regulation 10/2011. For medical packaging, ISO 10993-1 evaluation is a finished-article requirement and is not automatically conferred by the resin supplier. REACH SVHC and RoHS statements should be verified for the specific production site; typical unfilled homopolymer polypropylene formulations of this class are generally free of intentionally added heavy metals and are considered compliant with Directive 2011/65/EU, but written confirmation is required before use in regulated articles.
Under EU Regulation 10/2011, overall migration testing must be performed on the final article using the appropriate food simulant. Homopolymer polypropylene food-contact articles are commonly evaluated against an overall migration limit of 10 mg/dm², but fatty-food simulants may require supplementary testing. The supplier’s declaration should identify maximum use temperature and permitted contact type; a generic resin statement is insufficient for finished-article compliance.
| Regulation / standard | Evaluation condition | Typical documentation |
|---|---|---|
| FDA 21 CFR 177.1520 | Olefin polymer basis | Supplier food-contact letter, lot-specific |
| EU Regulation 10/2011 | Finished-article migration testing | Migration certificate on final article |
| Directive 2011/65/EU RoHS | Homogeneous material limit | Supplier declaration or certificate |
| REACH SVHC | 0.1 % w/w substance threshold | Safety data sheet and declaration |
| ISO 10993-1 | Finished medical device | Device-level biocompatibility report |
Regulatory evidence is location-specific and may change with additive package. A technical dossier should not be reused across different production sites or customer products without explicit supplier approval.
P4C6B-194 may be evaluated for flat yarn, strapping tape, and monofilament processes where high tenacity and water resistance are required. In tape extrusion, water bath temperature is commonly maintained at 25–40 °C; orientation draw ratios between 6:1 and 10:1 are typical for homopolymer polypropylene but product-specific optimization is required. The controlled-rheology character of P4C6B-194 generally improves draw uniformity and reduces die-lip buildup relative to broad-molecular-weight-distribution homopolymers; however, it may narrow the process window at high draw ratios. Additive package migration to quench-bath surfaces should be controlled by continuous filtration and regular cleaning to prevent surface defects in downstream weaving.
Quench-bath temperature has a direct effect on smectic versus monoclinic crystallinity and subsequent tensile properties. A bath temperature below 20 °C can increase line speed but may introduce dimensional variability in drawn tape because the initial crystalline order is less uniform. Orientation temperature in a hot-air oven is typically controlled between 110 °C and 130 °C; drawing below 90 °C can induce fibrillation, while temperatures above 150 °C may reduce tenacity because of chain relaxation. Published data for this specific configuration is limited, and a pilot-scale drawability study is recommended before industrial scale-up.
