| HS Code | 476513 |
| Material | Polypropylene Homopolymer |
| Grade | PP210 |
| Density | 0.90 g/cm³ |
| Melt Flow Rate 230 C 2 16kg | 2.0 g/10min |
| Tensile Strength At Yield | 35 MPa |
| Elongation At Break | 100% |
| Flexural Modulus | 1400 MPa |
| Izod Impact Strength Notched 23 C | 3.5 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 100 °C |
| Vicat Softening Point | 150 °C |
| Melting Point | 165 °C |
| Rockwell Hardness | R100 |
As an accredited MTEGRITY PP Homopolymer PP210 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | MTEGRITY PP Homopolymer PP210 is supplied in 25 kg multi-wall paper bags with inner liner, palletized and wrapped for transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of MTEGRITY PP Homopolymer PP210, with secure, dry stowage and proper ventilation to prevent damage during transit. |
| Shipping | MTEGRITY PP Homopolymer PP210 is a non-hazardous polypropylene resin supplied in solid pellet form. Ship in clean, moisture-resistant bags or containers to prevent contamination and water absorption. Store away from direct heat and ignition sources. Standard dry cargo transport is suitable; avoid excessive dust and keep packaging intact. |
| Storage | Store MTEGRITY PP Homopolymer PP210 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. Maintain moderate temperatures, avoid excessive stacking, and use proper handling equipment. Ensure area is clean and protected from mechanical damage. |
| Shelf Life | Store MTEGRITY PP Homopolymer PP210 in a cool, dry area away from sunlight; shelf life is typically 24 months from manufacture. |
In a 16-cavity, accumulator-assisted injection moulding cell producing 180 ml polypropylene dairy cups at a nominal wall thickness of 0.85 mm, MTEGRITY PP Homopolymer PP210 is introduced as granulate with a melt flow rate of 21 g/10 min determined under ISO 1133-1:2022 at 230 °C and 2.16 kg. The food-contact boundary for this sector is defined by Regulation (EU) 10/2011 Annex IV and FDA 21 CFR 177.1520, while overall migration is verified according to EN 1186-1:2002 and specific migration of colourants is cross-checked against EN 13130-1:2004. The addition ratio is tightly limited to 2.0–3.0 wt% of a titanium dioxide or equivalent pigment masterbatch; no secondary processing aid is used because the 21 g/10 min melt already provides the shear-thinning behaviour required for short filling. The downstream process is high-speed injection moulding with a 20:1 L/D general-purpose screw, a check-ring non-return valve, melt temperature between 230 °C and 250 °C, mould temperature from 15 °C to 40 °C, and injection velocity of 250–450 mm/s. These settings generate wall shear rates above 10,000 s⁻¹ at the gate and allow flow-length-to-wall-thickness ratios of 180:1–220:1 before the frozen skin arrests flow. Hold pressure is maintained at 40–60 MPa for 0.8–1.5 s, followed by cooling of 4.0–7.0 s. Terminal finished products include 150–200 ml yoghurt cups, 500 g margarine tubs, 750 ml delicatessen trays, and 1,000 ml food service containers. The main process conflict is post-mould crystallisation shrinkage: unfilled homopolymer can exhibit 1.0–1.5 % linear mould shrinkage under ISO 294-4:2018, so cavity-to-cavity holding-pressure imbalance above 8 % across a hot-runner manifold produces ovality and lid-fit loss on round thin-wall containers. High-temperature contact should be limited to short exposures below 100 °C because prolonged hot-oil contact can swell the amorphous fraction and reduce top-load stiffness.
Closure production from PP210 in 28 mm PCO 1881 short-skirt and 38 mm dairy screw-cap formats is concentrated in 24- to 64-cavity tools with valve-gated hot runners. The compliance stack combines FDA 21 CFR 177.1520, Regulation (EU) 10/2011, and ISO 8317:2015 for child-resistant package testing where applicable; beverage brand specifications additionally require organoleptic panel assessment under ISO 13302:2003. The addition ratio is restricted to 1.0–2.0 wt% of a 5 % slip/anti-block masterbatch, and migrating amide slip is controlled because mineral-water organoleptic thresholds can fall in the low mg/dm² range. The injection process operates at melt temperatures of 220–250 °C, mould temperatures of 20–30 °C, and hold pressures of 30–45 MPa; cooling time is fixed at 5.0–8.0 s by a tamper-evident band bridge thickness of 0.9–1.2 mm. The principal failure mode occurs when the melt cushion is held below 3 mm: partial screw-chamber packing causes bridge thickness variation of 0.10–0.20 mm and removal torque falls outside the 0.3–0.8 N·m acceptance band commonly specified for 28 mm CSD closures. Terminal components include 28 mm carbonated soft drink closures, 30/25 mm sports caps, 38 mm dairy plugs, and 45 mm wide-mouth closures for edible oil; lipid-containing products require additional environmental stress-cracking resistance validation under ASTM D1693-15 because oil contact accelerates craze formation in the frozen surface layer.
Medical-grade conversion using PP210 is limited to non-implantable, short-term contact devices, with biocompatibility assessed under ISO 10993-5:2009 for cytotoxicity and ISO 10993-10:2021 for skin sensitisation, while manufacturing is controlled under ISO 13485:2016 in an ISO 14644-1:2015 Class 8 cleanroom. Regulatory acceptance for drug-device combining requires USP Class VI extraction data and FDA 21 CFR 177.1520 for the polymer; terminal ethylene oxide or gamma sterilisation is applied at 25–50 kGy for gamma, and the base grade must contain 0.05–0.15 wt% phenolic or phosphite antioxidant to limit molecular-weight loss after 50 kGy exposure. The addition ratio for colour is normally 0 wt%; where a white masterbatch is needed for labelling contrast, it is restricted to 1.0–2.0 wt% and leachables are characterised under ISO 10993-18:2020. Processing uses an all-electric injection-moulding machine with a 22:1 L/D screw, melt temperature of 220–240 °C, mould temperature of 20–35 °C, and no mould-release sprays; cycle times of 12–18 s are typical for 10 ml syringe barrels with 1.2 mm wall stock. Splay and black specks must be eliminated because visual defect limits for moulded medical parts are commonly below 0.1 mm² and are checked at lot release. Terminal products include 1–10 ml syringe barrels, 15 ml and 50 ml centrifuge tubes, pipette tip racks, and PCR cartridge housings. PP210 is not recommended for parenteral liquid contact beyond 12 h, for lipid emulsions, or for autoclave cycles above 121 °C for 30 min unless a post-mould annealing step is introduced.
A multi-cavity tool producing 30 L storage boxes and stackable crates from unfilled PP210 is usually specified for a 1.1–1.8 mm nominal wall thickness, with clamp-force demand of 3–5 kN/cm² of projected part area. The regulatory position for general housewares remains REACH Annex XVII and Regulation (EC) No 1935/2004 when the article is intended for food contact; converters often pre-test finished articles under EN 1186-1:2002 and FDA 21 CFR 177.1520 if unpackaged dry-food contact is plausible. Addition rates are 0.5–1.0 wt% colour masterbatch, 0.10–0.20 wt% antistatic concentrate, and 0.05–0.15 wt% UV stabiliser where outdoor storage is claimed; higher filler levels are avoided because the homopolymer already provides stiffness. Processing on a standard 20:1 L/D reciprocating screw at 220–250 °C melt temperature and 20–40 °C mould temperature delivers cooling times of 12–25 s for thick bosses and rib roots, while packing pressure is raised to 50–70 MPa to compensate for sink marks at the intersection of 2.5 mm structural ribs and 1.4 mm walls. Terminal products include stackable storage boxes, 10–35 L crates, hangers, shelf dividers, and waste bins; low-velocity dart impact under ISO 6603-2:2023 should be specified for use below 0 °C because homopolymer PP loses ductility at sub-zero temperatures and can crack at gate locations if frozen-in stress exceeds 30 MPa.
Because a homopolymer PP210 melt exhibits a comparatively narrow processing window in semi-technical automotive under-hood mouldings, it is selected only for non-structural and non-impact-critical components such as HVAC duct clips, cable conduits, and cowl vent grilles where service temperature remains below 100 °C and the part is not loaded in a crash zone. Automotive acceptance requires conformance to REACH Annex XVII, GADSL, and the interior flammability limits of ISO 3795:1989 or FMVSS 302, with reported burn rates below 100 mm/min for 3.0 mm specimens; OEM specifications may add VDA 270:2022 odour and fogging limits. The compound addition ratio is 10–20 wt% talc masterbatch when higher flexural modulus is required, plus 0.2–0.4 wt% heat stabiliser and 1.0–2.0 wt% carbon black masterbatch for UV-exposed cowl screens. Processing uses injection moulding at melt temperatures of 230–250 °C, mould temperatures of 30–50 °C, and holding pressure of 45–65 MPa; talc-filled versions require a hardened barrel and screw because mineral filler increases wear, and the check-ring must be inspected every 150,000 cycles. Terminal parts include HVAC air deflector levers, under-hood wiring ducts, cowl vent grilles, and battery tray hold-down brackets; components requiring notched impact strength above 8 kJ/m² at 23 °C under ISO 179-1:2020 should be converted to an impact copolymer because homopolymer grades remain notched-impact-limited.
Small electrical accessory parts such as appliance terminal shrouds, wire spools, and plug bodies made from PP210 are moulded at melt temperatures of 220–240 °C and mould temperatures of 25–45 °C. The applicable electrical safety requirements include IEC 60695-2-11:2021 glow-wire testing at 650 °C for unattended appliances, UL 94 HB for enclosures up to 1.5 mm, and IEC 62368-1:2023 for audio/video and information technology equipment when the part functions as a fire enclosure. The addition rate is 0.15–0.30 wt% primary antioxidant, 0.05–0.15 wt% acid scavenger, and 2.0–3.0 wt% colour masterbatch; if a UL 94 V-2 classification is required, 2.0–4.0 wt% of a brominated flame-retardant masterbatch may be added, but this lowers tensile yield stress by approximately 5–15 % under ISO 527-2:2012 and increases plate-out on the mould surface after 8–10 h of continuous running. Processing uses a 20:1 L/D general-purpose screw, closed-loop injection velocity of 80–120 mm/s, and holding pressure of 30–50 MPa; weld-line strength in terminal shrouds is evaluated by ISO 527-2:2012 tensile bars cut transverse to the weld line, with an accepted weld factor of 0.50–0.70 relative to the non-welded coupon. Terminal products include terminal block housings, wire spools for copper winding, small-appliance switches, and reel flanges; PP210 without flame retardant is not suitable for live parts requiring UL 94 V-0 at 0.8 mm because unmodified homopolymer cannot maintain that classification without high additive loadings that impair flow.
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MTEGRITY PP Homopolymer PP210 is an unmodified, low-melt-flow polypropylene homopolymer supplied as pelletized resin for injection moulding and sheet extrusion. The grade is controlled at a nominal melt flow rate of 2.1 g/10 min at 230 °C/2.16 kg when tested in accordance with ISO 1133-1:2022. Density at 23 °C is 0.905 g/cm³ per ISO 1183-1:2019. Tensile yield stress is 34 MPa and tensile elongation at yield is 9% per ISO 527-2:2012; flexural modulus is 1,450 MPa per ISO 178:2019; notched Izod impact strength at 23 °C is 4.0 kJ/m² per ISO 180/A:2019; heat deflection temperature at 0.45 MPa is 95 °C per ISO 75-2:2013. The Vicat softening temperature is 153 °C per ISO 306:2022. These figures are typical release data and do not replace a lot-specific certificate of analysis.
Release specifications include a melt flow rate window of 1.9–2.3 g/10 min and ash content below 0.05 wt% after ignition at 600 °C per ISO 3451-1:2019. The polymer is a linear isotactic homopolymer without ethylene comonomer. Differential scanning calorimetry per ISO 11357-3:2018 for general-purpose isotactic homopolymers of this melt flow class typically records a peak melting temperature of 163–167 °C and a crystallisation temperature of 112–118 °C at 10 °C/min. The crystalline fraction after controlled cooling is commonly 50–55%. PP210-specific DSC values are batch-dependent and should be read from the lot certificate. These thermal transitions set the lower mould temperature bound for dimensional stability and explain the higher stiffness relative to random copolymers.
Injection moulding on production-scale lines with clamp force from 350 tonnes to 1,800 tonnes uses barrel temperatures of 200 °C, 220 °C, 230 °C, 240 °C, 240 °C from the feed throat to the nozzle. Mould temperature is held between 20 °C and 60 °C. A general-purpose screw with L/D ratio of 20:1 to 24:1 and compression ratio of 2.5:1 to 3.0:1 is specified for homopolymer feed. Injection pressure is typically 70–120 MPa; hold pressure is set at 50–70% of peak injection pressure; back pressure is 2–8 bar; screw speed is 40–120 rpm. Shot mass should not exceed 70% of barrel capacity, because residence times above 10 min at melt temperatures exceeding 250 °C produce yellowing and a measurable increase in MFR from chain scission. Pre-drying is unnecessary at ambient relative humidity below 50%. When plant humidity exceeds 60% RH, pellets are dried at 80 °C for 2–4 h in a desiccant dryer with dew point not higher than −20 °C; failure to observe this boundary condition causes surface splay and unstable melt pressure from vaporised surface moisture in the feed zone.
The grade is not suitable for high-speed thin-wall containers with wall sections below 0.8 mm at flow lengths beyond 120 mm. Low-melt-flow homopolymers in the 2.0 g/10 min range exhibit shorter spiral flow lengths and higher injection pressure demand than controlled-rheology grades at 12–25 g/10 min. On an all-electric injection moulding machine with 1,000 kN clamp force, cavity pressure during filling of a 0.6 mm wall multi-cavity container has been reported to rise by 15–20% relative to a 12 g/10 min grade under identical barrel settings. Published data for PP210 in this exact configuration is limited; the pressure shift is representative of the product class and must be validated on the production tool.
At wall sections below 0.6 mm, the process moves from pressure-limited to velocity-limited filling. To maintain a melt front velocity above 200 mm/s, injection speed is raised to 80–120 mm/s on reciprocating screw machines, creating shear heating of 5–10 °C and reducing local viscosity. The lower MFR magnifies pressure drop across restricted gates and runner segments. A 0.6 mm pin gate can produce a pressure drop of 25–35 MPa at a flow rate of 10 cm³/s, resulting in jetting, flow hesitation, or gate freeze before complete packing. Short shots at the end of flow, gate blush, and mould deflection at the parting line are the dominant process failures. If the flow length-to-thickness ratio exceeds 150:1, gate diameter should be increased to 0.8–1.2 mm and melt temperature raised to 250 °C; this narrows allowable residence time to under 8 min and increases the risk of odour and yellowing in regrind. Cavity pressure transducers should verify end-of-fill pressure above 30 MPa and gate seal time not shorter than 0.2 s before series production.
PP210 is used as a base resin for mineral-filled compounds in applications requiring higher modulus at the expense of impact. With talc of median particle size 5 µm incorporated at 20 wt%, tensile modulus measured per ISO 527-2:2012 is approximately 2,200 MPa, while notched Izod impact at 23 °C per ISO 180/A:2019 falls below 3.0 kJ/m². At 40 wt% talc, flexural modulus reaches 3,000 MPa, but melt flow rate drops to 0.7–1.2 g/10 min and injection pressure demand rises by 30–40%. This is a known property cliff-edge: above 20 wt% platelet filler, notched impact strength declines faster than modulus increases because stress concentration at filler edges dominates the failure process. Compounders should pre-disperse talc in a masterbatch carrier with carrier MFR above 20 g/10 min rather than dry-blending directly into PP210, because dry blends segregate at the hopper and produce batch-to-batch flexural modulus variation exceeding 10%. Published data for PP210-specific filled systems is limited; the above values are representative of low-flow PP homopolymers with talc and must be confirmed using the actual masterbatch. For glass fibre reinforcement, PP210 is not the preferred carrier resin; fibre bundles are wet out more easily in high-MFR homopolymers.
For sheet extrusion, PP210 is processed on single-screw extruders with screw diameter 60–120 mm and L/D ratios of 30:1 to 36:1. Barrel temperatures from the feed throat to the die are 190 °C, 210 °C, 220 °C, 230 °C, 235 °C. Die temperature is held at 230–245 °C. Melt pressure at the screen changer should remain below 250 bar. The lower MFR gives PP210 higher melt strength than 12 g/10 min controlled-rheology grades and reduces sheet sag during extrusion. In vacuum thermoforming of 2–5 mm sheet, sheet surface temperature is 160–175 °C. Below 160 °C, corner definition suffers; above 180 °C, local thinning and webbing become difficult to control. Dimensional repeatability depends on uniform sheet temperature, not simply on vacuum level. The orientation induced during forming produces frozen-in stress; parts requiring annealing are held at 110 °C for 20–40 min in a forced-air oven to reduce post-mould warpage. Published data for PP210 in deep-draw configurations is limited; sheet surface temperature should be mapped with an infrared pyrometer before setting the plug assist speed.
PP210 differs from random copolymers and impact copolymers primarily by backbone composition and phase structure. The absence of ethylene comonomer raises the crystalline melting point and flexural modulus but lowers clarity and low-temperature impact strength. In capillary rheometry per ISO 11443:2021, PP210 shows shear viscosity at 230 °C and 100 s⁻¹ typically in the range 1,200–1,800 Pa·s, compared with 400–800 Pa·s for a 12 g/10 min controlled-rheology grade. The comparative values below are manufacturer typical data for PP210 and representative published data for general-purpose copolymers and controlled-rheology homopolymers.
| Property | Test method | PP210 | PP random copolymer | PP impact copolymer | High-MFR PP homopolymer |
|---|---|---|---|---|---|
| Melt flow rate at 230 °C/2.16 kg [g/10 min] | ISO 1133-1:2022 | 2.1 | 8 | 12 | 25 |
| Density at 23 °C [g/cm³] | ISO 1183-1:2019 | 0.905 | 0.900 | 0.900 | 0.905 |
| Tensile yield stress [MPa] | ISO 527-2:2012 | 34 | 28 | 24 | 34 |
| Flexural modulus [MPa] | ISO 178:2019 | 1,450 | 1,000 | 1,100 | 1,500 |
| Notched Izod impact at 23 °C [kJ/m²] | ISO 180/A:2019 | 4.0 | 6.0 | 15.0 | 3.5 |
| Notched Izod impact at −20 °C [kJ/m²] | ISO 180/A:2019 | 2.0 | 2.5 | 6.0 | 1.8 |
| Heat deflection temperature at 0.45 MPa [°C] | ISO 75-2:2013 | 95 | 85 | 90 | 95 |
| Haze on 1.5 mm plaque [%] | ASTM D1003-21 | 60 | 10 | 80 | 65 |
| Mould shrinkage [%] | ISO 294-4:2018 | 1.0–1.5 | 1.2–1.8 | 1.2–1.8 | 1.0–1.4 |
This matrix explains where PP210 is selected over other polypropylene resin families. Rigid parts requiring higher flexural modulus and heat deflection temperature than random copolymers, but not the low-temperature ductility of impact copolymers, are the usual application window. The higher shrinkage anisotropy of the homopolymer, however, must be compensated by packing pressure. In a 2 mm end-gated plaque per ISO 294-4:2018, PP210 exhibits longitudinal shrinkage of 1.2–1.5% and transverse shrinkage of 1.0–1.3%. Warpage is controlled by gate placement and cooling uniformity rather than by extending packing time beyond 12 s, which can induce residual stress and delayed post-mould distortion. For components exposed to impact at temperatures below −20 °C, PP210 should be replaced by an impact copolymer or a specialty elastomer-modified grade; PP210 is evaluated only where wall thickness exceeds 2 mm and no high-speed impact is present.
Compliance status for PP210 is governed by the food-contact and packaging regulations of the intended market. Polypropylene homopolymers are generally covered by FDA 21 CFR 177.1520 for olefin polymers when used within the specified extractives limitations; PP210 can be considered for food-contact use only if the final formulation and additives meet the end-use conditions. Under European Union requirements, compliance with EU No 10/2011 requires migration testing of the finished article, not merely resin certification. The grade contains no intentionally added per- and polyfluoroalkyl substances; antistatic and nucleating packages, if added, must be declared on the safety data sheet. REACH registration is the responsibility of the resin supplier. RoHS Directive 2011/65/EU restrictions on lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE apply to electrical and electronic equipment. PP210 without radiation-stabilising additives is not recommended for gamma sterilisation above 25 kGy because chain scission and yellowing are observed; for medical devices requiring repeated sterilisation, a radiation-stabilised copolymer or homopolymer grade is required.
PP210 is resistant to many aqueous acids, bases, and saline solutions at ambient temperature, but it is not resistant to strong oxidising acids or aromatic and chlorinated hydrocarbons at elevated temperature. In contact with concentrated nitric acid above 50 wt% at 23 °C, oxidation causes surface cracks and loss of tensile elongation. In benzene, toluene, and trichloroethylene, swelling is observed within 24 h; equilibrium mass uptake can exceed 10% per ISO 62:2008 and reduces flexural modulus by more than 20%. Chlorinated water at 50 °C and free chlorine concentration above 3 mg/L accelerates oxidative chain scission in the presence of copper piping; the service life of unstabilised PP210 under these conditions is not defined by published data and must be tested per ISO 22088-3:2005. For industrial fluid handling, the resin should be validated with the actual fluid at the maximum service temperature and stress, not with generic solvent class data.
