| HS Code | 312903 |
| Material | PP Homopolymer |
| Density | 0.905 g/cm³ |
| Melt Flow Rate | 3.0 g/10 min (230°C, 2.16 kg) |
| Tensile Strength At Yield | 35 MPa |
| Elongation At Break | >100% |
| Flexural Modulus | 1500 MPa |
| Izod Impact Strength | 3.5 kJ/m² at 23°C |
| Heat Deflection Temperature | 105 °C at 0.45 MPa |
| Vicat Softening Temperature | 155 °C |
| Melting Temperature | 165 °C |
As an accredited MTEGRITY PP Homopolymer PP510 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | MTEGRITY PP Homopolymer PP510 is supplied in 25 kg polypropylene bags, palletized and stretch-wrapped for secure transport and storage. |
| Container Loading (20′ FCL) | 20′ FCL container loading for MTEGRITY PP Homopolymer PP510: safely packed, secured, and protected for efficient transport. |
| Shipping | MTEGRITY PP Homopolymer PP510 is a non-hazardous polypropylene resin. It is not regulated as dangerous goods under IMDG, ADR, or IATA. Ship in clean, dry hoppers, bags, or railcars; protect from moisture and excessive heat. No special labeling required, though avoid dust accumulation during handling. |
| Storage | Store MTEGRITY PP Homopolymer PP510 in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture contamination and dust accumulation. Avoid contact with strong oxidizers. No special temperature control is required, but stable conditions prolong product quality. Ensure good housekeeping and proper labeling. |
| Shelf Life | Shelf life is typically two years from manufacture when stored in original, sealed packaging under cool, dry, shaded conditions. |
Thin-wall injection moulding lines running MTEGRITY PP Homopolymer PP510 in food-contact service are governed principally by FDA 21 CFR 177.1520 for olefin polymers and EU No 10/2011 with an overall migration limit of 10 mg/dm² under the intended contact conditions; GB 4806.6 and EU 1935/2004 good manufacturing practice provisions apply where export markets require. In commercial melt formulations PP510 is fed as the continuous base resin at 96–98 wt%, with a clarified nucleator/processing-stabilizer masterbatch at 1.5–3 wt% and antistatic or slip concentrates at 0.2–0.8 wt%; the exact ratio is adjusted against migration cell results and screw-recovery variability. Downstream conversion is high-speed thin-wall injection moulding with accumulator-assisted injection units, screw L/D 22–24, compression ratio 2.0–2.5, melt temperature 220–250°C, mould cooling water at 10–30°C, injection velocity 150–300 mm/s and cavity pressure 50–80 MPa. Finished articles are round dairy tubs, delicatessen containers, thin-wall food cups and rigid overcaps or lids with wall sections 0.3–0.8 mm; PP510 homopolymer should be excluded from frozen-impact service below -10°C unless impact modification is validated because notched Izod values for the homopolymer class fall sharply at low temperature.
On high-speed lines the most frequent production failure is not plastication but gate blush and warpage after demoulding due to non-uniform cooling of 0.3–0.8 mm sidewalls. Pre-drying PP510 is usually unnecessary if sealed original packaging is used; however material stored at relative humidity above 60% in cold warehouses should be predried at 80°C for 2–4 h to eliminate surface splay. Batch-to-batch variance in melt flow under ISO 1133-1:2022 should be monitored by the moulder because a shift of ±2 g/10 min is sufficient to alter short-shot pressure and cavitation balance.
Closure manufacture using PP510 homopolymer is governed by EU No 10/2011 migration limits, FDA 21 CFR 177.1520, EU 2023/2006 GMP, and organoleptic panel testing under ISO 13302 for taint. PP510 resin is charged at 95–99 wt% of the melt; erucamide slip masterbatch is added at 0.5–1.2 wt%, antioxidant/acid scavenger concentrate at 0.1–0.5 wt%, and nucleating package at 0.05–0.3 wt% to control cycle time and torque retention. Continuous compression molding with hot-runner injection-compression cells runs melt temperatures of 220–245°C, mould temperatures of 12–25°C, injection pressure 80–120 MPa, and closure cycle times of 5–8 s in 48–72-cavity tooling; hot-runner valve gate sequencing is the dominant output bottleneck, not plastication. Terminal closure types are screw caps for still water, aseptic dairy, UHT milk and low-carbonation juice; PP510 homopolymer is not recommended for high-limonene citrus oils or carbonated soft drink environments due to lower environmental stress crack resistance, and torque retention should be validated per ASTM D2063 with closure diameter changes.
Continuous compression molding lines exhibit the bottleneck at hot-runner valve gate sequencing rather than plastication; when the PP510 homopolymer lot MFR rises toward the upper specification limit, gate stringing and cap thread feathering increase, requiring gate temperature reduction of 5–10°C or cycle adjustment. Environmental stress crack resistance of homopolymer closures should be tested under ASTM D1693 after contact with surfactant solutions and orange oil simulants; if the closure is converted to carbonated soft drink use, the lower ESCR of homopolymer versus copolymer PP requires redesign of the tamper-evident band geometry or replacement with a copolymer grade.
PP510 homopolymer is metered at 94–98 wt% in opaque housewares formulations, with color/UV masterbatch at 2–6 wt% and acid-scavenger/antioxidant concentrate at 0.1–0.5 wt%; the addition ratio is adjusted according to the colorant opacity target and the need for outdoor stabilizer packages. Compliance for housewares sold in the EU and North America references REACH EC 1907/2006, RoHS 2011/65/EU, and where the article is intended for repeated food contact, EU No 10/2011 and FDA 21 CFR 177.1520; toy-like storage items require EN 71-3 migration testing for restricted elements if marketed to children. Injection moulding is run on standard reciprocating screw machines with L/D 20–24, melt temperature 220–250°C, mould temperature 15–40°C, holding pressure 35–60 MPa, and cycle times of 20–45 s depending on nominal wall thickness; rib-to-wall ratios below 0.6 are specified to prevent sink marks and excessive molded-in stress. Terminal products are storage totes, crates, drawer organizers, coat hangers, and light-duty household pails; unmodified PP510 is not suitable for outdoor service beyond 12 months without UV masterbatch or for sub-zero drop impact because homopolymer notched impact strength under ISO 179-1 falls steeply below 0°C.
| Application segment | Melt temperature | Tooling temperature | Specific processing parameter | PP510 resin fraction |
|---|---|---|---|---|
| Thin-wall food packaging | 220–250°C | 10–30°C | Accumulator injection velocity 150–300 mm/s | 96–98 wt% |
| Beverage closures | 220–245°C | 12–25°C | High-cavitation cycle 5–8 s | 95–99 wt% |
| Rigid housewares and storage | 220–250°C | 15–40°C | Rib-to-wall ratio below 0.6 | 94–98 wt% |
| Appliance structural parts | 230–250°C | 20–50°C | Holding pressure 40–70 MPa | 90–98 wt% |
| Laboratory consumables | 220–250°C | 15–35°C | Gamma dose 25–50 kGy | 96–99.5 wt% |
| Automotive under-hood | 220–250°C | 30–60°C | Compounding screw speed 300–600 rpm | 70–85 wt% |
Across appliance assembly lines, PP510 homopolymer is specified for rigid support structures where dimensional stability under intermittent dry heat is the controlling requirement. Compliance documentation for these parts references IEC 60335-1 end-product evaluation, UL 94 HB or V-2 classification, RoHS 2011/65/EU, and REACH EC 1907/2006. The melt formulation is PP510 base resin at 90–98 wt%, heat stabilizer/acid-scavenger masterbatch at 0.5–2 wt%, optional mineral filler at 0–10 wt%, and antistatic or slip concentrate at 0.1–0.5 wt%; mineral filler additions above 10 wt% require HDT revalidation under ASTM D648 because homopolymer modulus increases but weld-line strength decreases. Injection moulding is performed on reciprocating screw machines with clamp force 150–500 t, melt temperature 230–250°C, mould temperature 20–50°C, holding pressure 40–70 MPa, and post-gate freeze cooling to control sink marks. Terminal part types include fan shrouds, pump housings, control-panel brackets, dryer vent grilles, and compressor covers; continuous service exposure above 100°C or contact with hot aggressive detergent foams is outside the validated envelope for unmodified PP510 homopolymer and requires compounded stabilizer packages.
The selection of PP510 homopolymer for laboratory consumables is governed less by melt processability than by post-mould sterilization dose tolerance under ISO 11137-1 and ISO 11137-2, with biological evaluation per ISO 10993-1, cytotoxicity per ISO 10993-5, and irritation/sensitization per ISO 10993-10; ISO 13485 cleanroom manufacturing applies where the part is sold as a medical device component. In this segment PP510 is weighed at 96–99.5 wt% of the formulation, with radiation-stable nucleator/antioxidant masterbatch at 0.5–3 wt% and antistatic/slip concentrate at 0.1–0.5 wt%; the exact masterbatch split is adjusted after electron spin resonance and yellowness index measurement under ASTM E313. Injection moulding is performed in ISO Class 8 cleanrooms with melt temperature 220–250°C, mould temperature 15–35°C, high-cavitation tooling and validated holding pressure; terminal gamma irradiation at 25–50 kGy is mapped to minimum dose across the product carton. End products are Petri dishes, specimen containers, diagnostic cassette bases, and pipette tip racks; repeated autoclaving above 121°C is not recommended for load-bearing features because heat deflection under ASTM D648 at 0.45 MPa is exceeded and dimensional distortion may occur. If the radiation dose exceeds 50 kGy, surface oxidation may raise yellowness index under ASTM E313 by more than 2 units, and mechanical embrittlement at hinge points should be evaluated under ISO 178 before part release.
| Application segment | Primary compliance standards | Terminal article classes |
|---|---|---|
| Thin-wall food packaging | FDA 21 CFR 177.1520; EU No 10/2011; GB 4806.6 | Dairy tubs, deli containers, food cups, rigid lids |
| Beverage closures | EU No 10/2011; FDA 21 CFR 177.1520; ISO 13302 | Still water caps, aseptic dairy closures, UHT caps |
| Rigid housewares and storage | EC 1907/2006; 2011/65/EU; EN 71-3 | Storage totes, crates, organizers, hangers |
| Appliance structural parts | IEC 60335-1; UL 94; 2011/65/EU | Fan shrouds, pump housings, brackets, grilles |
| Laboratory consumables | ISO 10993-1; ISO 11137-1; ISO 13485 | Petri dishes, specimen containers, diagnostic cassettes |
| Automotive under-hood | IATF 16949; ISO 16750-5; ELV 2000/53/EC | Battery covers, fan shrouds, air cleaner housings |
Because unfilled PP510 homopolymer lacks the tensile modulus and long-term heat resistance needed for under-hood covers, it is specified as a compounding base rather than a neat injection resin. Compliance documentation references IATF 16949 production part approval, ISO 16750-5 chemical resistance to engine fluids, ELV 2000/53/EC, and RoHS 2011/65/EU. Compounding formulations typically meter PP510 at 70–85 wt%, talc at 10–20 wt% or short glass fiber at 10–30 wt%, maleated polypropylene coupling agent at 1–3 wt%, and heat stabilizer/FR masterbatch at 0.5–5 wt% depending on the UL 94 rating specified on the part drawing. The downstream process is twin-screw compounding with L/D 40, side-stuffer addition for mineral filler, barrel temperatures 200–240°C, screw speed 300–600 rpm, followed by injection moulding at melt temperature 220–250°C, mould temperature 30–60°C, and clamp force 500–1,500 t. Terminal components are battery covers, cooling fan shrouds, air cleaner housings, and fluid reservoir brackets; published data for PP510-specific retention after exposure to hot aqueous coolant at 105°C for 1,000 h is limited, and validation under ISO 16750-5 is required before production release.
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MTEGRITY PP Homopolymer PP510 is a general-purpose injection-molding grade of isotactic polypropylene homopolymer. The designation places the material in the medium-flow segment used for thin-wall rigid packaging, caps and closures, appliance housings, and disposable medical ware. Exact grade-specific public data are limited for this designation; therefore the numerical values presented in the following sections are representative values for an unfilled PP homopolymer with a melt flow rate of 11 g/10 min at 230 °C under 2.16 kg load, determined in accordance with ISO 1133-1:2022. Supplier certificate of analysis and lot-specific data supersede these values. PP510 is supplied as cylindrical pellets with a nominal density of 0.90 g/cm³ under ISO 1183-1:2019 and contains a phenolic/phosphite antioxidant package intended for standard melt processing.
The primary structural difference between PP510 and clarified random copolymers is the absence of ethylene comonomer, which raises the crystallinity and short-term modulus of PP510 but removes the ductile failure mode available in ethylene-propylene sequences. Under ISO 178:2019, the flexural modulus of unfilled PP510-class resin is typically 1,450 MPa, whereas a clarified random copolymer with equivalent melt flow may exhibit 1,050 MPa to 1,200 MPa at 23 °C. In hot-fill contact, PP510 retains a Vicat A50 softening temperature near 155 °C under ISO 306:2022, but its notched Izod impact strength at -20 °C is typically below 2.0 kJ/m² under ISO 180/A. Clarified random copolymers obtain higher low-temperature impact resistance because ethylene segments disrupt chain-folding and reduce spherulite size, but they sacrifice upper-use temperature. PP510 therefore fits applications requiring stiffness and dimensional stability above 60 °C but not requiring ductile impact below 0 °C.
Compared with heterophasic impact copolymers, PP510 contains no discrete elastomer phase. This eliminates the viscosity mismatch and rubber-particle coalescence risks seen during high-shear injection but lowers room-temperature notched Izod impact from approximately 8–15 kJ/m² to 3.0 kJ/m². For molds with long flow-length-to-wall-thickness ratios above 200:1, the lower rubber content of PP510 reduces burn streaks and visible flow marks but yields lower weld-line elongation at break.
Across high-cavitation stack molds with clamp forces between 800 kN and 2,500 kN, PP510 is processed at melt temperatures of 220 °C to 260 °C and mold temperatures of 20 °C to 50 °C. Barrel profiles from feed to nozzle are typically set at 200/210/220/230/230 °C. The medium melt-flow rate of 11 g/10 min provides adequate spiral flow for wall sections down to 0.6 mm, but high injection speeds above 300 mm/s may generate shear-induced melt-temperature rise exceeding 10 °C; this should be verified with an infrared pyrometer on purged melt. Screw recovery time becomes the cycle-limiting factor in molds with shot volume above 60% of barrel capacity. A general-purpose screw with 20:1 L/D and compression ratio of 2.5:1 is adequate for unfilled PP510; vented screws are not required under normal conditions.
Because PP510 is a polypropylene homopolymer with a relatively narrow molecular weight distribution, its shear viscosity at 230 °C declines from roughly 220 Pa·s at 100 s⁻¹ to 35 Pa·s at 1,000 s⁻¹ in capillary rheometry. This pseudoplastic response is lower in magnitude than that of a high-molecular-weight blow-molding grade and permits filling at lower injection pressure. However, the same narrow distribution reduces melt strength in extrusion thermoforming; PP510 is not recommended for deep-draw thermoforming where sag resistance below 0.1 mm/mm is required. Unfilled PP510 also exhibits a critical shear stress for sharkskin melt fracture near 0.14 MPa in capillary-flow tests; in injection molding this is rarely limiting except in sub-0.4 mm wall sections with gate-land penetration below 0.5 mm. Detailed capillary viscosity data for PP510 as a specific designation are limited in open sources; the above values are class-derived and should be confirmed by in-house rheometry.
Representative comparison of unfilled PP510-class homopolymer with clarified random and impact copolymers; verified against current supplier certificates.
| Property | PP510-class homopolymer | Clarified random copolymer equivalent | Impact copolymer equivalent | Test method |
|---|---|---|---|---|
| Melt flow rate | 11 g/10 min | 11 g/10 min | 10 g/10 min | ISO 1133-1:2022 |
| Density | 0.90 g/cm³ | 0.90 g/cm³ | 0.90 g/cm³ | ISO 1183-1:2019 |
| Flexural modulus | 1,450 MPa | 1,050–1,200 MPa | 1,100–1,300 MPa | ISO 178:2019 |
| Tensile yield stress | 34 MPa | 27–30 MPa | 24–28 MPa | ISO 527-2:2012 |
| Notched Izod impact, 23 °C | 3.0 kJ/m² | 6–8 kJ/m² | 10–15 kJ/m² | ISO 180/A |
| Notched Izod impact, -20 °C | 1.5 kJ/m² | 3–4 kJ/m² | 8–12 kJ/m² | ISO 180/A |
| Heat deflection temperature, 0.45 MPa | 95 °C | 80–85 °C | 85–90 °C | ISO 75-2:2013 |
| Vicat A50 softening temperature | 155 °C | 125–135 °C | 130–140 °C | ISO 306:2022 |
In food-contact packaging, PP510-class homopolymer is processed into caps with tamper-evident bands and thin-wall containers. The stiffness at elevated temperature permits removal torque retention after hot-fill exposure; however, the absence of ethylene comonomer reduces abuse resistance in freezer applications below -20 °C. For cap applications, the resin is typically run at melt temperatures near 240 °C to control odor and taste volatiles. Compliance with FDA 21 CFR 177.1520, EU 10/2011, and China GB 9685-2016 must be confirmed with the specific lot and converter migration data. PP510-class resin containing only phenolic/phosphite antioxidants at typical loading below 0.10 wt% is generally recognized as suitable for single-use food contact under these frameworks, but specific overall migration limits must be tested under OM2 conditions in EU 10/2011.
For medical and diagnostic ware, PP510-class homopolymer is evaluated under ISO 10993-1:2018 and may be considered for USP <661> certification depending on additive package. The grade withstands steam sterilization at 121 °C for 15 min; however, PP homopolymer loses impact strength after gamma irradiation at doses above 25 kGy due to chain scission. Ethylene oxide sterilization at 55 °C is preferred, but residual gas limits under ISO 10993-7:2018 must be established. PP510 contains no plasticizers or phthalates, but lot-level heavy-metal data must be requested for compliance with ICH Q3D. This grade is not intended for implantable device components.
For applications exposed to outdoor weathering or continuous service above 80 °C, the standard phenolic/phosphite stabilization system in PP510 must be supplemented with hindered amine light stabilizers and thiosynergists. Prolonged oven aging at 135 °C without these additives produces oxidative embrittlement within 500 h in class resins, as measured by retention of tensile elongation under ISO 527-2:2012. Copper-containing colorants accelerate degradation and are incompatible with long-term heat aging; iron-based pigments can also reduce oxidative induction time. For UV-stable PP510-based compounds, a loading of 0.2 wt% to 0.5 wt% HALS with a benzoate UV absorber is typical, but the specific recipe must be validated by ISO 4892-2:2013 weathering. The base PP510 homopolymer itself is not a UV-stabilized grade and should not be exposed to direct sunlight for extended periods without additive adjustment.
Because PP510 contains no elastomer phase, weld lines exhibit lower elongation at break than the base resin, typically 3–5% under ISO 527-2:2012 at a specimen weld line. Gate placement should avoid weld lines in threaded cap closures subject to removal torque; when unavoidable, increasing mold temperature from 20 °C to 50 °C raises weld-line strength by approximately 15–25% in class data. Shrinkage of unfilled PP homopolymer is anisotropic: in-flow shrinkage is typically 1.2% to 1.6% and cross-flow shrinkage 0.8% to 1.2% after 48 h at 23 °C, depending on packing pressure. This differential causes warpage in flat lids; ribs and unequal wall thickness should be avoided or compensated with mold-cooling layout changes.
For compounders, PP510 is an appropriate base resin for glass-fiber reinforcement, talc filling, and flame-retardant masterbatches. Its narrow molecular weight distribution assists dispersion in twin-screw compounding at 40:1 L/D with barrel temperatures from 200 °C to 230 °C. Addition of 20 wt% glass fiber to PP510-class resin raises flexural modulus to approximately 4,000 MPa but reduces melt flow rate to around 5 g/10 min. Talc at 20 wt% increases flexural modulus to 3,200 MPa and density to 1.05 g/cm³. These values are class-derived; PP510-specific compounded data require pilot verification.
As a non-polar polyolefin, PP510 exhibits low surface energy and requires corona, plasma, or flame treatment prior to printing, painting, or adhesive lamination. Without surface activation, wetting tensions below 32 mN/m produce poor ink adhesion on molded surfaces. For flame treatment, surface oxidation should be carried out to a target wet tension of 40–44 mN/m, verified under ISO 8296:2012. Chlorinated primers improve structural bond strength but introduce volatile organic compound emissions and may be restricted in food-contact applications.
Regulatory and compliance matrix applicable to PP510-class homopolymer; end-use certification remains the responsibility of the final article manufacturer.
| Requirement area | Standard or regulation | Typical testing condition |
|---|---|---|
| Food contact, United States | FDA 21 CFR 177.1520 | Food type and condition of use |
| Food contact, European Union | EU 10/2011 | Overall migration under OM2 simulant |
| Food contact, China | GB 9685-2016 | Positive list for additives |
| Medical containers | USP <661> | Physicochemical and biological reactivity |
| Biocompatibility | ISO 10993-1:2018, ISO 10993-5:2009 | Cytotoxicity for non-implantable use |
| Ethylene oxide residue | ISO 10993-7:2018 | Residual EO and ethylene chlorohydrin |
| Elemental impurities | ICH Q3D | Heavy-metal speciation by ICP-MS |
| Weathering | ISO 4892-2:2013 | Xenon-arc exposure, UV-stabilized compound only |
| Electrical and electronic restrictions | RoHS 2011/65/EU | Cadmium, lead, mercury, hexavalent chromium limits |
| European chemical inventory | REACH | SVHC screening under Article 33 |
Regrind incorporation into PP510 is feasible up to 20 wt% with virgin material, provided the regrind is dry and free of mixed-polymer contamination. Higher regrind levels increase melt-flow variation and reduce notched Izod impact at 23 °C. Regrind from multi-cavity hot-runner molds with long residence times may contain oxidized gel particles; melt filtration through 60 mesh screens is recommended for critical thin-wall parts. Storage of opened PP510 containers at relative humidity above 60% requires drying at 80 °C for 2–4 h before processing to avoid surface splay and hydrolysis of additive carriers. Avoid combination with strong oxidizing acids, chlorinated solvents above ambient temperature, and copper-based heat stabilizers in long-term service.
